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Jia W, Zhang X, Sun R, Li P, Wang D, Gu X, Song C. Value of modified qSOFA, glucose and lactate in predicting prognosis in children with sepsis in the PICU. Ann Med 2024; 56:2337714. [PMID: 38590177 PMCID: PMC11005878 DOI: 10.1080/07853890.2024.2337714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 02/29/2024] [Indexed: 04/10/2024] Open
Abstract
The purpose was to investigate how well age-adjusted modified quick Sequential Organ Failure Assessment (qSOFA) scores paired with blood glucose and lactate levels predict the outcomes of septicemic children in the pediatric intensive care unit (PICU). One hundred children who were diagnosed with sepsis and septic shock in the PICU of Henan Children's Hospital were eligible, and other 20 patients in the same hospital at different times were selected as a validation set. Respiratory rate (RR), heart rate (HR), capillary refill time (CRT), and Alert, Voice, Pain, Unresponsive (AVPU) scale were included in the age-adjusted modified qSOFA scoring criteria for scoring. The primary outcome was 28-day all-cause mortality. The predictive values were evaluated by the ROC curve. In the sepsis group, 50 patients were male, and 50 patients were female. The 28-day all-cause mortality rate was 52%. Fifty-one patients with age-adjusted modified qSOFA scores >1. The serum lactate level was 2.4 mmol/L, and the blood glucose level was 9.3 mmol/L. The AUCs for the age-adjusted modified qSOFA score, serum lactate and blood glucose levels for the prediction of 28-day all-cause mortality in children with sepsis were 0.719, 0.719 and 0.737, respectively. The cut-off values were one point, 3.8 mmol/L and 10 mmol/L, respectively. The AUC of the age-adjusted modified qSOFA score for the validation set of was 0.925. When the three indices were combined, the AUC was 0.817, the Hosmer-Lemeshow goodness-of-fit test showed χ2 = 2.428 and p = .965. When children with sepsis are admitted to the ICU, we recommend performing rapid scoring and rapid bedside lactate and glucose testing to determine the early prognosis.
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Affiliation(s)
- Wanyu Jia
- Department of Emergency Medicine, Henan Province Engineering Research Center of Diagnosis and Treatment of Pediatric Infection and Critical Care, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Xue Zhang
- Department of Emergency Medicine, Henan Province Engineering Research Center of Diagnosis and Treatment of Pediatric Infection and Critical Care, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Ruiyang Sun
- Department of Emergency Medicine, Henan Province Engineering Research Center of Diagnosis and Treatment of Pediatric Infection and Critical Care, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Peng Li
- Department of Emergency Medicine, Henan Province Engineering Research Center of Diagnosis and Treatment of Pediatric Infection and Critical Care, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Daobin Wang
- Department of Pediatrics, Zhecheng County People’s Hospital, Shangqiu, China
| | - Xue Gu
- Department of Emergency Medicine, Henan Province Engineering Research Center of Diagnosis and Treatment of Pediatric Infection and Critical Care, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
| | - Chunlan Song
- Department of Emergency Medicine, Henan Province Engineering Research Center of Diagnosis and Treatment of Pediatric Infection and Critical Care, Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou, China
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Song J, So PTC, Yoo H, Kang JW. Swept-source Raman spectroscopy of chemical and biological materials. J Biomed Opt 2024; 29:S22703. [PMID: 38584965 PMCID: PMC10996846 DOI: 10.1117/1.jbo.29.s2.s22703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 04/09/2024]
Abstract
Significance Raman spectroscopy has been used as a powerful tool for chemical analysis, enabling the noninvasive acquisition of molecular fingerprints from various samples. Raman spectroscopy has proven to be valuable in numerous fields, including pharmaceutical, materials science, and biomedicine. Active research and development efforts are currently underway to bring this analytical instrument into the field, enabling in situ Raman measurements for a wider range of applications. Dispersive Raman spectroscopy using a fixed, narrowband source is a common method for acquiring Raman spectra. However, dispersive Raman spectroscopy requires a bulky spectrometer, which limits its field applicability. Therefore, there has been a tremendous need to develop a portable and sensitive Raman system. Aim We developed a compact swept-source Raman (SS-Raman) spectroscopy system and proposed a signal processing method to mitigate hardware limitations. We demonstrated the capabilities of the SS-Raman spectroscopy by acquiring Raman spectra from both chemical and biological samples. These spectra were then compared with Raman spectra obtained using a conventional dispersive Raman spectroscopy system. Approach The SS-Raman spectroscopy system used a wavelength-swept source laser (822 to 842 nm), a bandpass filter with a bandwidth of 1.5 nm, and a low-noise silicon photoreceiver. Raman spectra were acquired from various chemical samples, including phenylalanine, hydroxyapatite, glucose, and acetaminophen. A comparative analysis with the conventional dispersive Raman spectroscopy was conducted by calculating the correlation coefficients between the spectra from the SS-Raman spectroscopy and those from the conventional system. Furthermore, Raman mapping was obtained from cross-sections of swine tissue, demonstrating the applicability of the SS-Raman spectroscopy in biological samples. Results We developed a compact SS-Raman system and validated its performance by acquiring Raman spectra from both chemical and biological materials. Our straightforward signal processing method enhanced the quality of the Raman spectra without incurring high costs. Raman spectra in the range of 900 to 1200 cm - 1 were observed for phenylalanine, hydroxyapatite, glucose, and acetaminophen. The results were validated with correlation coefficients of 0.88, 0.84, 0.87, and 0.73, respectively, compared with those obtained from dispersive Raman spectroscopy. Furthermore, we performed scans across the cross-section of swine tissue to generate a biological tissue mapping plot, providing information about the composition of swine tissue. Conclusions We demonstrate the capabilities of the proposed compact SS-Raman spectroscopy system by obtaining Raman spectra of chemical and biological materials, utilizing straightforward signal processing. We anticipate that the SS-Raman spectroscopy will be utilized in various fields, including biomedical and chemical applications.
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Affiliation(s)
- Jeonggeun Song
- Korea Advanced Institute of Science and Technology, Department of Mechanical Engineering, Daejeon, Republic of Korea
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States
| | - Peter T. C. So
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States
| | - Hongki Yoo
- Korea Advanced Institute of Science and Technology, Department of Mechanical Engineering, Daejeon, Republic of Korea
| | - Jeon Woong Kang
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States
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Wan B, Patel M, Zhou G, Olma M, Bieri M, Mueller M, Appiah-Amponsah E, Patel B, Jayapal K. Robust platform for inline Raman monitoring and control of perfusion cell culture. Biotechnol Bioeng 2024; 121:1688-1701. [PMID: 38393313 DOI: 10.1002/bit.28680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/23/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024]
Abstract
Perfusion cell culture has been gaining increasing popularity for biologics manufacturing due to benefits such as smaller footprint, increased productivity, consistent product quality and manufacturing flexibility, cost savings, and so forth. Process Analytics Technologies tools are highly desirable for effective monitoring and control of long-running perfusion processes. Raman has been widely investigated for monitoring and control of traditional fed batch cell culture process. However, implementation of Raman for perfusion cell culture has been very limited mainly due to challenges with high-cell density and long running times during perfusion which cause extremely high fluorescence interference to Raman spectra and consequently it is exceedingly difficult to develop robust chemometrics models. In this work, a platform based on Raman measurement of permeate has been proposed for effective analysis of perfusion process. It has been demonstrated that this platform can effectively circumvent the fluorescence interference issue while providing rich and timely information about perfusion dynamics to enable efficient process monitoring and robust bioreactor feed control. With the highly consistent spectral data from cell-free sample matrix, development of chemometrics models can be greatly facilitated. Based on this platform, Raman models have been developed for good measurement of several analytes including glucose, lactate, glutamine, glutamate, and permeate titer. Performance of Raman models developed this way has been systematically evaluated and the models have shown good robustness against changes in perfusion scale and variations in permeate flowrate; thus models developed from small lab scale can be directly transferred for implementation in much larger scale of perfusion. With demonstrated robustness, this platform provides a reliable approach for automated glucose feed control in perfusion bioreactors. Glucose model developed from small lab scale has been successfully implemented for automated continuous glucose feed control of perfusion cell culture at much larger scale.
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Affiliation(s)
- Boyong Wan
- Analytical Research & Development, Merck & Co. Inc., Kenilworth, New Jersey, USA
| | - Misaal Patel
- Bioprocess Research & Development, Merck & Co. Inc., Kenilworth, New Jersey, USA
| | - George Zhou
- Global Vaccine and Biologics Commercialization, Merck & Co. Inc., Kenilworth, New Jersey, USA
| | - Michael Olma
- Analytical Research & Development, Werthenstein Biopharma GmbH, MSD, Werthenstein, Switzerland
| | - Marco Bieri
- Analytical Research & Development, Werthenstein Biopharma GmbH, MSD, Werthenstein, Switzerland
| | - Marvin Mueller
- Analytical Research & Development, Werthenstein Biopharma GmbH, MSD, Werthenstein, Switzerland
| | | | - Bhumit Patel
- Analytical Research & Development, Merck & Co. Inc., Kenilworth, New Jersey, USA
| | - Karthik Jayapal
- Bioprocess Research & Development, Merck & Co. Inc., Kenilworth, New Jersey, USA
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Huo Z, Gu J, He T. Apelin‑13 reduces high glucose‑induced mitochondrial dysfunction in cochlear hair cells by inhibiting endoplasmic reticulum stress. Exp Ther Med 2024; 27:226. [PMID: 38596659 PMCID: PMC11002831 DOI: 10.3892/etm.2024.12515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/28/2024] [Indexed: 04/11/2024] Open
Abstract
The complex manifestation of diabetic hearing loss and the relative inaccessibility of the inner ear contribute to the lack of research. The present study aimed to reveal the role of Apelin-13, a critical regulator of lipid metabolism, in diabetes-induced hearing loss. Cochlear hair cells treated with high glucose (HG) were adopted as an in vitro research model, and the impacts of Apelin-13 on cellular oxidative stress, apoptosis, mitochondrial dysfunction and endoplasmic reticulum (ER) stress were determined. In addition, cells were treated with the ER stress agonist tunicamycin to further explore its potential role in the regulatory effects of Apelin-13. Apelin-13 inhibited oxidative stress and apoptosis in the HG-induced cells. Additionally, Apelin-13 elevated mitochondrial membrane potential and ATP production, whereas it reduced mitochondrial reactive oxygen species levels. The levels of ER stress-related proteins exhibited a downward trend in response to Apelin-13. By contrast, tunicamycin reversed the effects of Apelin-13 on the aforementioned aspects, suggesting the role of ER stress in the regulatory effects of Apelin-13. In conclusion, the present study elucidated the protective role of Apelin-13 in ameliorating HG-induced mitochondrial functional impairment in cochlear hair cells by inhibiting ER stress.
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Affiliation(s)
- Zhiqiang Huo
- Department of Otolaryngology, Affiliated Changshu Hospital of Nantong University, Changshu, Jiangsu 215500, P.R. China
| | - Jun Gu
- Department of Otolaryngology, Affiliated Changshu Hospital of Nantong University, Changshu, Jiangsu 215500, P.R. China
| | - Teng He
- Department of Otolaryngology, Affiliated Changshu Hospital of Nantong University, Changshu, Jiangsu 215500, P.R. China
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Chan SY, Zhang H, Wong JT, Chang HF, Chen LW, Barton SJ, Nield H, El-Heis S, Kenealy T, Lavalle L, Ramos-Nieves JM, Godin JP, Silva-Zolezzi I, Cutfield WS, Godfrey KM. Higher early pregnancy plasma myo-inositol associates with increased postprandial glycaemia later in pregnancy: Secondary analyses of the NiPPeR randomized controlled trial. Diabetes Obes Metab 2024; 26:1658-1669. [PMID: 38312016 DOI: 10.1111/dom.15468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 02/06/2024]
Abstract
AIM Myo-inositol supplementation from ~13 weeks' gestation reportedly improves glycaemia regulation in metabolically at-risk women, with speculation that earlier supplementation might bring further improvement. However, the NiPPeR trial of a myo-inositol-containing supplement starting preconception did not lower gestational glycaemia in generally healthy women. We postulated that the earlier timing of supplementation influences the maternal metabolic adaptation for gestational glycaemia regulation. METHODS In total, 585 women were recruited from Singapore, UK and New Zealand for the NiPPeR study. We examined associations of plasma myo-inositol concentrations at 7 and 28 weeks' gestation with 28 weeks plasma glucose (PG; fasting, and 1 h and 2 h in 75 g oral glucose tolerance test) and insulin indices using linear regression adjusting for covariates. RESULTS Higher 7-week myo-inositol, but not 28-week myo-inositol, associated with higher 1 h PG [βadj (95% confidence intervals) 0.05 (0.01, 0.09) loge mmol/L per loge μmol/L, p = .022] and 2 h PG [0.08 (0.03, 0.12), p = .001]; equivalent to 0.39 mmol/L increase in 2 h PG for an average 7-week myo-inositol increase of 23.4 μmol/L with myo-inositol supplementation. Higher 7-week myo-inositol associated with a lower 28-week Stumvoll index (first phase), an approximation of insulin secretion [-0.08 (-0.15, -0.01), p = .020] but not with 28-week Matsuda insulin sensitivity index. However, the clinical significance of a 7-week myo-inositol-related increase in glycaemia was limited as there was no association with gestational diabetes risk, birthweight and cord C-peptide levels. In-silico modelling found higher 28-week myo-inositol was associated with lower gestational glycaemia in White, but not Asian, women after controlling for 7-week myo-inositol effects. CONCLUSION To our knowledge, our study provides the first evidence that increasing first trimester plasma myo-inositol may slightly exacerbate later pregnancy post-challenge glycaemia, indicating that the optimal timing for starting prenatal myo-inositol supplementation needs further investigation.
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Affiliation(s)
- Shiao-Yng Chan
- Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Department of Obstetrics and Gynaecology, National University Hospital, Singapore, Singapore
| | - Han Zhang
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Jui-Tsung Wong
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Hsin F Chang
- Department of Obstetrics and Gynaecology, National University Hospital, Singapore, Singapore
| | - Ling-Wei Chen
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Sheila J Barton
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK
| | - Heidi Nield
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK
| | - Sarah El-Heis
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Timothy Kenealy
- Liggins Institute and A Better Start - National Science Challenge, The University of Auckland, Auckland, New Zealand
| | - Luca Lavalle
- Nestlé Research, Société des Produits Nestlé SA, Lausanne, Switzerland
| | | | | | | | - Wayne S Cutfield
- Liggins Institute and A Better Start - National Science Challenge, The University of Auckland, Auckland, New Zealand
| | - Keith M Godfrey
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
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Berrell N, Sadeghirad H, Blick T, Bidgood C, Leggatt GR, O'Byrne K, Kulasinghe A. Metabolomics at the tumor microenvironment interface: Decoding cellular conversations. Med Res Rev 2024; 44:1121-1146. [PMID: 38146814 DOI: 10.1002/med.22010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/08/2023] [Accepted: 12/07/2023] [Indexed: 12/27/2023]
Abstract
Cancer heterogeneity remains a significant challenge for effective cancer treatments. Altered energetics is one of the hallmarks of cancer and influences tumor growth and drug resistance. Studies have shown that heterogeneity exists within the metabolic profile of tumors, and personalized-combination therapy with relevant metabolic interventions could improve patient response. Metabolomic studies are identifying novel biomarkers and therapeutic targets that have improved treatment response. The spatial location of elements in the tumor microenvironment are becoming increasingly important for understanding disease progression. The evolution of spatial metabolomics analysis now allows scientists to deeply understand how metabolite distribution contributes to cancer biology. Recently, these techniques have spatially resolved metabolite distribution to a subcellular level. It has been proposed that metabolite mapping could improve patient outcomes by improving precision medicine, enabling earlier diagnosis and intraoperatively identifying tumor margins. This review will discuss how altered metabolic pathways contribute to cancer progression and drug resistance and will explore the current capabilities of spatial metabolomics technologies and how these could be integrated into clinical practice to improve patient outcomes.
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Affiliation(s)
- Naomi Berrell
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Habib Sadeghirad
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Tony Blick
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Charles Bidgood
- APCRC-Q, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Graham R Leggatt
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Ken O'Byrne
- Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Arutha Kulasinghe
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
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Adam HS, Molinsky R, Bohn B, Roy S, Rosenbaum M, Paster B, Yuzefpolskaya M, Colombo PC, Papapanou PN, Desvarieux M, Jacobs DR, Demmer RT. Clinical attachment loss is cross-sectionally associated with elevated glucose among adults without diabetes. J Clin Periodontol 2024; 51:522-535. [PMID: 38343130 PMCID: PMC11023769 DOI: 10.1111/jcpe.13945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 12/19/2023] [Accepted: 01/01/2024] [Indexed: 04/18/2024]
Abstract
AIM We investigated whether periodontal measures are cross-sectionally associated with prediabetes and cardiometabolic biomarkers among non-diabetic younger adults. MATERIALS AND METHODS One thousand seventy-one participants (mean age = 32.2 years [SE = 0.3]; 73% female) from the Oral Infections, Glucose Intolerance and Insulin Resistance Study were enrolled. Full-mouth clinical attachment loss (fm-CAL), probing depth (fm-PD) and bleeding on probing were ascertained. Interproximal CAL (i-CAL) and probing depths (i-PD) served as our primary exposures. Glucose, HbA1c, insulin and insulin resistance (HOMA-IR) outcomes were assessed from fasting blood. Prediabetes was defined per American Diabetes Association guidelines. Prediabetes prevalence ratios (PR [95% CI]) and mean [SE] cardiometabolic biomarkers were regressed on periodontal variables via multivariable robust variance Poisson regression or multivariable linear regression. RESULTS Prevalence of prediabetes was 12.5%. Fully adjusted prediabetes PR in Tertiles 3 versus 1 of mean i-CAL was 2.42 (1.77, 3.08). Fully adjusted fasting glucose estimates across i-CAL tertiles were 83.29 [0.43], 84.31 [0.37], 86.48 [0.46]; p for trend <.01. Greater percent of sites with i-PD ≥3 mm showed elevated natural-log-HOMA-IR after adjustment (0%-12% of sites = 0.33 [0.03], 13%-26% of sites = 0.39 [0.03], ≥27% of sites = 0.42 [0.03]; p for trend = .04). CONCLUSIONS i-CAL (vs. fm-CAL) was associated with elevated fasting glucose and prediabetes, whereas i-PD (vs. fm-PD) was associated with insulin resistance. Future studies are needed to examine periodontal disease and incident prediabetes.
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Affiliation(s)
- Hamdi S. Adam
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Rebecca Molinsky
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Bruno Bohn
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
- Department of Epidemiology, School of Public Health, University of Colorado, Aurora, CO, USA
| | - Sumith Roy
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Michael Rosenbaum
- Division of Molecular Genetics, Departments of Pediatrics and Medicine, Columbia University, New York, NY, USA
| | | | - Melana Yuzefpolskaya
- Division of Cardiology, Department of Medicine, New York Presbyterian Hospital, Columbia University, New York, NY, USA
| | - Paolo C. Colombo
- Division of Cardiology, Department of Medicine, New York Presbyterian Hospital, Columbia University, New York, NY, USA
| | - Panos N. Papapanou
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, Columbia University, New York, NY, USA
| | - Moïse Desvarieux
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - David R. Jacobs
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Ryan T. Demmer
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
- Division of Epidemiology, Department of Quantitative Health Sciences, College of Medicine and Science, Mayo Clinic, Rochester, MN, USA
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Li H, Xiao N, Jiang M, Long J, Li Z, Zhu Z. Advances of Transition Metal-Based Electrochemical Non-enzymatic Glucose Sensors for Glucose Analysis: A Review. Crit Rev Anal Chem 2024:1-37. [PMID: 38635407 DOI: 10.1080/10408347.2024.2339955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Glucose concentration is a crucial parameter for assessing human health. Over recent years, non-enzymatic electrochemical glucose sensors have drawn considerable attention due to their substantial progress. This review explores the common mechanism behind the transition metal-based electrocatalytic oxidation of glucose molecules through classical electrocatalytic frameworks like the Pletcher model and the Hydrous Oxide-Adatom Mediator model (IHOAM), as well as the redox reactions at the transition metal centers. It further compiles the electrochemical characterization techniques, associated formulas, and their ensuing conclusions pertinent to transition metal-based non-enzymatic electrochemical glucose sensors. Subsequently, the review covers the latest advancements in the field of transition metal-based active materials and support materials used in non-enzymatic electrochemical glucose sensors in the last decade (2014-2023). Additionally, it presents a comprehensive classification of representative studies according to the active metal catalysts components involved.
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Affiliation(s)
- Haotian Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Nan Xiao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Mengyi Jiang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Jianjun Long
- Danyang Development Zone, Jiangsu Yuwell-POCT Biological Technology Co., Ltd, Danyang, China
| | - Zhanhong Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Zhigang Zhu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
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Dumniem N, Taechamaeteekul P, Suwimonteerabutr J, Tummaruk P. Supplementing a carbohydrate-rich diet from late lactation to insemination increased glucose and insulin levels in weaned sows, leading to improved subsequent piglet birth weight. J Vet Med Sci 2024:24-0002. [PMID: 38631872 DOI: 10.1292/jvms.24-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024] Open
Abstract
Premating maternal nutrition is crucial for postweaning follicle growth, thereby influencing piglet birth weight in subsequent litters. The present study investigated the impact of supplementing a carbohydrate-rich premating diet in sows on metabolic hormones, subsequent piglet birth weight and reproductive performance. Sows were distributed into three groups, control (n=42) received standard diets; treatment I (n=41) received the same diets supplemented with 500 g of a carbohydrate-rich premating diet from weaning until insemination; treatment II (n=42) received the same diets supplemented with 500 g of a carbohydrate-rich premating diet from 7 days before weaning until insemination. Blood samples were taken from sows around weaning to measure serum insulin-like growth factor-1 and insulin, and blood glucose after feeding. The study found that sows on a carbohydrate-rich diet (treatment II) had higher postprandial glucose (P<0.05) and insulin levels (P=0.06) than others. This diet did not affect overall reproductive performance, but it did increase piglet birth weight and reduce the number of low-birth weight piglets compared to the control (P<0.001) and treatment I groups (P<0.05). Supplementing a carbohydrate-rich premating diet for 7 days before weaning until insemination enhanced postprandial glucose and insulin concentrations in weaned sows. This dietary intervention led to improved subsequent piglet birth weight and reduced the proportion of low-birth weight piglets.
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Affiliation(s)
- Natchanon Dumniem
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University
| | - Preechaphon Taechamaeteekul
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University
| | - Junpen Suwimonteerabutr
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University
- Centre of Excellence in Swine Reproduction, Chulalongkorn University
| | - Padet Tummaruk
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University
- Centre of Excellence in Swine Reproduction, Chulalongkorn University
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Tran M, Gilling S, Wu J, Wang L, Shin DJ. miR-141/200c contributes to ethanol-mediated hepatic glycogen metabolism. Mol Metab 2024:101942. [PMID: 38642890 DOI: 10.1016/j.molmet.2024.101942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 04/15/2024] [Indexed: 04/22/2024] Open
Abstract
OBJECTIVE Hepatic glucose metabolism is profoundly perturbed by excessive alcohol intake. miR-141/200c expression is significantly induced by chronic ethanol feeding. This study aimed at identifying the role of miR-141/200c in glucose homeostasis during chronic ethanol exposure. METHODS WT and miR-141/200c KO mice were fed a control or an ethanol diet for 30 days, followed by a single binge of maltose dextrin or ethanol, respectively. Untargeted metabolomics analysis of hepatic primary metabolites was performed along with analyses for liver histology, gene expression, intracellular signaling pathways, and physiological relevance. Primary hepatocytes were used for mechanistic studies. RESULTS Mir-141/200c deficiency rewires hepatic glucose metabolism during chronic ethanol feeding, increasing the abundance of glucose intermediates including G6P, an allosteric activator for GS. miR-141/200c deficiency replenished glycogen depletion during chronic ethanol feeding accompanied by reduced GS phosphorylation in parallel with increased expression of PP1 glycogen targeting subunits. Moreover, miR-141/200c deficiency prevented ethanol-mediated increases in AMPK and CaMKK2 activity. Ethanol treatment reduced glycogen content in WT-hepatocytes, which was reversed by dorsomorphin, a selective AMPK inhibitor, while KO-hepatocytes displayed higher glycogen content than WT-hepatocytes in response to ethanol treatment. Furthermore, treatment of hepatocytes with A23187, a calcium ionophore activating CaMKK2, lowered glycogen content in WT-hepatocytes. Notably, the suppressive effect of A23187 on glycogen deposition was reversed by dorsomorphin, demonstrating that the glycogen depletion by A23187 is mediated by AMPK. KO-hepatocytes exhibited higher glycogen content than WT-hepatocytes in response to A23187. Finally, miR-141/200c deficiency led to improved glucose tolerance and insulin sensitivity during chronic ethanol feeding. CONCLUSIONS MIR-141/200c deficiency replenishes ethanol-mediated hepatic glycogen depletion through the regulation of GS activity and calcium signaling coupled with the AMPK pathway, improving glucose homeostasis and insulin sensitivity. These results underscore miR-141/200c as a potential therapeutic target for the management of alcohol intoxication.
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Affiliation(s)
- Melanie Tran
- Department of Physiology and Neurobiology, University of Connecticut. 75 N. Eagleville Rd, Storrs, CT 06269, USA; Division of Nephrology, Department of Medicine, University of Connecticut Health Center. 300 UConn Health Boulevard, Farmington, CT 06030-2202
| | - Shaynian Gilling
- Department of Physiology and Neurobiology, University of Connecticut. 75 N. Eagleville Rd, Storrs, CT 06269, USA
| | - Jianguo Wu
- Department of Physiology and Neurobiology, University of Connecticut. 75 N. Eagleville Rd, Storrs, CT 06269, USA; Lerner Research Institute at Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Li Wang
- Department of Internal Medicine, Section of Digestive Diseases, Yale University. 333 Cedar St, New Haven, CT 06510, USA
| | - Dong-Ju Shin
- Department of Physiology and Neurobiology, University of Connecticut. 75 N. Eagleville Rd, Storrs, CT 06269, USA.
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11
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Reyer A, Bazihizina N, Jaślan J, Scherzer S, Schäfer N, Jaślan D, Becker D, Müller TD, Pommerrenig B, Neuhaus HE, Marten I, Hedrich R. Sugar beet PMT5a and STP13 carriers suitable for proton-driven plasma membrane sucrose and glucose import in taproots. Plant J 2024. [PMID: 38602250 DOI: 10.1111/tpj.16740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/26/2024] [Accepted: 03/18/2024] [Indexed: 04/12/2024]
Abstract
Sugar beet (Beta vulgaris) is the major sugar-producing crop in Europe and Northern America, as the taproot stores sucrose at a concentration of around 20%. Genome sequence analysis together with biochemical and electrophysiological approaches led to the identification and characterization of the TST sucrose transporter driving vacuolar sugar accumulation in the taproot. However, the sugar transporters mediating sucrose uptake across the plasma membrane of taproot parenchyma cells remained unknown. As with glucose, sucrose stimulation of taproot parenchyma cells caused inward proton fluxes and plasma membrane depolarization, indicating a sugar/proton symport mechanism. To decipher the nature of the corresponding proton-driven sugar transporters, we performed taproot transcriptomic profiling and identified the cold-induced PMT5a and STP13 transporters. When expressed in Xenopus laevis oocytes, BvPMT5a was characterized as a voltage- and H+-driven low-affinity glucose transporter, which does not transport sucrose. In contrast, BvSTP13 operated as a high-affinity H+/sugar symporter, transporting glucose better than sucrose, and being more cold-tolerant than BvPMT5a. Modeling of the BvSTP13 structure with bound mono- and disaccharides suggests plasticity of the binding cleft to accommodate the different saccharides. The identification of BvPMT5a and BvSTP13 as taproot sugar transporters could improve breeding of sugar beet to provide a sustainable energy crop.
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Affiliation(s)
- Antonella Reyer
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
| | - Nadia Bazihizina
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
- Department of Agrifood Production and Environmental Sciences, Università degli Studi di Firenze, Florence, 50019, Sesto Fiorentino, Italy
| | - Justyna Jaślan
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
| | - Sönke Scherzer
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
| | - Nadine Schäfer
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
| | - Dawid Jaślan
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
- Faculty of Medicine, Walther Straub Institute of Pharmacology and Toxicology, Ludwig Maximilians-Universität, 80336, Munich, Germany
| | - Dirk Becker
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
| | - Thomas D Müller
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
| | - Benjamin Pommerrenig
- Plant Physiology, University of Kaiserslautern, 67663, Kaiserslautern, Germany
- Julius Kühn Institute (JKI) - Federal Research Centre for Cultivated Plants, Institute for Resistance Research and Stress Tolerance, Quedlinburg, 06484, Germany
| | - H Ekkehard Neuhaus
- Plant Physiology, University of Kaiserslautern, 67663, Kaiserslautern, Germany
| | - Irene Marten
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
| | - Rainer Hedrich
- Department of Molecular Plant Physiology and Biophysics, Biocenter, Julius-Maximilians-Universität (JMU), Würzburg, 97082, Germany
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12
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Fois M, Zengin A, Song K, Giselbrecht S, Habibović P, Truckenmüller RK, van Rijt S, Tahmasebi Birgani ZN. Nanofunctionalized Microparticles for Glucose Delivery in Three-Dimensional Cell Assemblies. ACS Appl Mater Interfaces 2024; 16:17347-17360. [PMID: 38561903 PMCID: PMC11009907 DOI: 10.1021/acsami.4c02321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/20/2024] [Accepted: 03/20/2024] [Indexed: 04/04/2024]
Abstract
Three-dimensional (3D) cell assemblies, such as multicellular spheroids, can be powerful biological tools to closely mimic the complexity of cell-cell and cell-matrix interactions in a native-like microenvironment. However, potential applications of large spheroids are limited by the insufficient diffusion of oxygen and nutrients through the spheroids and, thus, result in the formation of a necrotic core. To overcome this drawback, we present a new strategy based on nanoparticle-coated microparticles. In this study, microparticles function as synthetic centers to regulate the diffusion of small molecules, such as oxygen and nutrients, within human mesenchymal stem cell (hMSC) spheroids. The nanoparticle coating on the microparticle surface acts as a nutrient reservoir to release glucose locally within the spheroids. We first coated the surface of the poly(lactic-co-glycolic acid) (PLGA) microparticles with mesoporous silica nanoparticles (MSNs) based on electrostatic interactions and then formed cell-nanofunctionalized microparticle spheroids. Next, we investigated the stability of the MSN coating on the microparticles' surface during 14 days of incubation in cell culture medium at 37 °C. Then, we evaluated the influence of MSN-coated PLGA microparticles on spheroid aggregation and cell viability. Our results showed the formation of homogeneous spheroids with good cell viability. As a proof of concept, fluorescently labeled glucose (2-NBD glucose) was loaded into the MSNs at different concentrations, and the release behavior was monitored. For cell culture studies, glucose was loaded into the MSNs coated onto the PLGA microparticles to sustain local nutrient release within the hMSC spheroids. In vitro results demonstrated that the local delivery of glucose from MSNs enhanced the cell viability in spheroids during a short-term hypoxic culture. Taken together, the newly developed nanofunctionalized microparticle-based delivery system may offer a versatile platform for local delivery of small molecules within 3D cellular assemblies and, thus, improve cell viability in spheroids.
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Affiliation(s)
| | | | - Ke Song
- Department of Instructive
Biomaterials Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Stefan Giselbrecht
- Department of Instructive
Biomaterials Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Pamela Habibović
- Department of Instructive
Biomaterials Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Roman K. Truckenmüller
- Department of Instructive
Biomaterials Engineering, MERLN Institute for Technology-Inspired
Regenerative Medicine, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
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13
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Gammariello CS, Hanson J, Relling AE, Oliveira MXS, Sipka AS, Enger KM, Enger BD. Localized mammary gland changes in milk composition and venous blood metabolite concentrations result from sterile subclinical mastitis. J Dairy Sci 2024:S0022-0302(24)00725-2. [PMID: 38608954 DOI: 10.3168/jds.2023-24044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 03/06/2024] [Indexed: 04/14/2024]
Abstract
Subclinical mastitis reduces milk yield and elicits undesirable changes in milk composition, but the mechanisms resulting in reduced milk production in affected mammary glands are incompletely understood. This study investigated the effects of sterile inflammation on mammary gland metabolism by assessing changes in milk and venous blood composition. Mid-lactation primiparous Holstein cows (n = 4) had udder halves randomly allocated to treatments; quarters of 1 udder half were infused with 2 billion cfu of formalin fixed Staphylococcus aureus (FX-STAPH) and quarters of the opposite udder half infused with saline (SAL). Blood samples were collected from the right and left subcutaneous abdominal veins in 2.6 h intervals until 40 h post challenge and analyzed for blood gas and metabolite concentrations. Milk from FX-STAPH udder halves had significantly increased SCS by first milking at 8 h post-challenge. By 16 h post-challenge, FX-STAPH udder halves had increased concentrations of protein and lactate and lower lactose concentrations than SAL udder halves. Milk fat concentrations, milk yields, energy corrected milk yields, and the ferric reducing antioxidant power of milk were not significantly different between SAL and FX-STAPH udder halves. Venous blood of FX-STAPH halves had marginally greater concentrations of saturated O2, partial pressures of O2, and glucose concentrations than SAL halves. Conversely, total and partial pressures of CO2 did not differ between udder half treatments suggesting a shift in local metabolite utilization in FX-STAPH udder halves. These results indicate that changes in milk composition resulting from mastitis are accompanied by changes in some key blood metabolite concentrations. The shift in venous blood metabolite concentrations, along with the marked increase in milk lactate, suggests that local mammary tissue and/or recruited and immune cells alters metabolite usage in mammary tissues. Future studies are needed to quantify the uptake of key milk precursors during mastitis.
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Affiliation(s)
- C S Gammariello
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, 44691
| | - J Hanson
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, 44691
| | - A E Relling
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, 44691
| | - M X S Oliveira
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, 44691
| | - A S Sipka
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
| | - K M Enger
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, 44691
| | - B D Enger
- Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, 44691.
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14
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Chien HC, Wang YL, Tu YC, Tsui PF, Tsai MC. Activation of heme oxygenase-1 by laminar shear stress ameliorates high glucose-induced endothelial cell and smooth muscle cell dysfunction. J Cell Biochem 2024. [PMID: 38591551 DOI: 10.1002/jcb.30563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/05/2024] [Accepted: 03/24/2024] [Indexed: 04/10/2024]
Abstract
High glucose (HG)-induced endothelial cell (EC) and smooth muscle cell (SMC) dysfunction is critical in diabetes-associated atherosclerosis. However, the roles of heme oxygenase-1 (HO-1), a stress-response protein, in hemodynamic force-generated shear stress and HG-induced metabolic stress remain unclear. This investigation examined the cellular effects and mechanisms of HO-1 under physiologically high shear stress (HSS) in HG-treated ECs and adjacent SMCs. We found that exposure of human aortic ECs to HSS significantly increased HO-1 expression; however, this upregulation appeared to be independent of adenosine monophosphate-activated protein kinase, a regulator of HO-1. Furthermore, HSS inhibited the expression of HG-induced intercellular adhesion molecule-1, vascular cell adhesion molecule-1, and reactive oxygen species (ROS) production in ECs. In an EC/SMC co-culture, compared with static conditions, subjecting ECs close to SMCs to HSS and HG significantly suppressed SMC proliferation while increasing the expression of physiological contractile phenotype markers, such as α-smooth muscle actin and serum response factor. Moreover, HSS and HG decreased the expression of vimentin, an atherogenic synthetic phenotypic marker, in SMCs. Transfecting ECs with HO-1-specific small interfering (si)RNA reversed HSS inhibition on HG-induced inflammation and ROS production in ECs. Similarly, reversed HSS inhibition on HG-induced proliferation and synthetic phenotype formation were observed in co-cultured SMCs. Our findings provide insights into the mechanisms underlying EC-SMC interplay during HG-induced metabolic stress. Strategies to promote HSS in the vessel wall, such as continuous exercise, or the development of HO-1 analogs and mimics of the HSS effect, could provide an effective approach for preventing and treating diabetes-related atherosclerotic vascular complications.
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Affiliation(s)
- Hung-Che Chien
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Yu-Lin Wang
- Center of General Education, Southern Taiwan University of Science and Technology, Tainan, Taiwan
- School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Physical Medicine and Rehabilitation, Chi Mei Medical Center, Tainan, Taiwan
| | - Yun-Chin Tu
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Pi-Fen Tsui
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia, USA
| | - Min-Chien Tsai
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei, Taiwan
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15
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Ponzilacqua-Silva B, Dadelahi AS, Abushahba MFN, Moley CR, Skyberg JA. Vaccine Elicited Antibodies Restrict Glucose Availability to Control Brucella Infection. J Infect Dis 2024:jiae172. [PMID: 38586904 DOI: 10.1093/infdis/jiae172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/25/2024] [Accepted: 03/29/2024] [Indexed: 04/09/2024] Open
Abstract
The impact of vaccine-induced immune responses on host metabolite availability has not been well studied. Here we show prior vaccination alters the metabolic profile of mice challenged with Brucella melitensis. In particular, glucose levels were reduced in vaccinated mice in an antibody-dependent manner. We also found the glucose transporter gene, gluP, plays a lesser role in B. melitensis virulence in vaccinated wild-type mice relative to vaccinated mice unable to secrete antibodies. These data indicate vaccine-elicited antibodies protect the host in part by restricting glucose availability. Moreover, Brucella and other pathogens may need to employ different metabolic strategies in vaccinated hosts.
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Affiliation(s)
- Bárbara Ponzilacqua-Silva
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
- Laboratory for Infectious Disease Research, University of Missouri, Columbia, Missouri, USA
| | - Alexis S Dadelahi
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
- Laboratory for Infectious Disease Research, University of Missouri, Columbia, Missouri, USA
| | - Mostafa F N Abushahba
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
- Laboratory for Infectious Disease Research, University of Missouri, Columbia, Missouri, USA
- Department of Zoonoses, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Charles R Moley
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
- Laboratory for Infectious Disease Research, University of Missouri, Columbia, Missouri, USA
| | - Jerod A Skyberg
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
- Laboratory for Infectious Disease Research, University of Missouri, Columbia, Missouri, USA
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16
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Thome CD, Tausche P, Hohenberger K, Yang Z, Krammer S, Trufa DI, Sirbu H, Schmidt J, Finotto S. Short-chain fatty acids induced lung tumor cell death and increased peripheral blood CD4+ T cells in NSCLC and control patients ex vivo. Front Immunol 2024; 15:1328263. [PMID: 38650948 PMCID: PMC11033355 DOI: 10.3389/fimmu.2024.1328263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/14/2024] [Indexed: 04/25/2024] Open
Abstract
Background Despite therapy advances, one of the leading causes of cancer deaths still remains lung cancer. To improve current treatments or prevent non-small cell lung cancer (NSCLC), the role of the nutrition in cancer onset and progression needs to be understood in more detail. While in colorectal cancer, the influence of local microbiota derived SCFAs have been well investigated, the influence of SCFA on lung cancer cells via peripheral blood immune system should be investigated more deeply. In this respect, nutrients absorbed via the gut might affect the tumor microenvironment (TME) and thus play an important role in tumor cell growth. Objective This study focuses on the impact of the short-chain fatty acid (SCFA) Sodium Butyrate (SB), on lung cancer cell survival. We previously described a pro-tumoral role of glucose on A549 lung adenocarcinoma cell line. In this study, we wanted to know if SB would counteract the effect of glucose and thus cultured A549 and H520 in vitro with and without SB in the presence or absence of glucose and investigated how the treatment with SB affects the survival of lung cancer cells and its influence on immune cells fighting against lung cancer. Methods In this study, we performed cell culture experiments with A549, H520 and NSCLC-patient-derived epithelial cells under different SB levels. To investigate the influence on the immune system, we performed in vitro culture of peripheral mononuclear blood cells (PBMC) from control, smoker and lung cancer patients with increasing SB concentrations. Results To investigate the effect of SB on lung tumor cells, we first analyzed the effect of 6 different concentrations of SB on A549 cells at 48 and 72 hours cell culture. Here we found that, SB treatment reduced lung cancer cell survival in a concentration dependent manner. We next focused our deeper analysis on the two concentrations, which caused the maximal reduction in cell survival. Here, we observed that SB led to cell cycle arrest and induced early apoptosis in A549 lung cancer cells. The expression of cell cycle regulatory proteins and A549 lung cancer stem cell markers (CD90) was induced. Additionally, this study explored the role of interferon-gamma (IFN-γ) and its receptor (IFN-γ-R1) in combination with SB treatment, revealing that, although IFN-γ-R1 expression was increased, IFN-γ did not affect the efficacy of SB in reducing tumor cell viability. Furthermore, we examined the effects of SB on immune cells, specifically CD8+ T cells and natural killer (NK) cells from healthy individuals, smokers, and NSCLC patients. SB treatment resulted in a decreased production of IFN-γ and granzyme B in CD8+ T cells and NK cells. Moreover, SB induced IFN-γ-R1 in NK cells and CD4+ T cells in the absence of glucose both in PBMCs from controls and NSCLC subjects. Conclusion Overall, this study highlights the potential of SB in inhibiting lung cancer cell growth, triggering apoptosis, inducing cell cycle arrest, and modulating immune responses by activating peripheral blood CD4+ T cells while selectively inducing IFN-γ-R1 in NK cells in peripheral blood and inhibiting peripheral blood CD8+ T cells and NK cells. Thus, understanding the mechanisms of action of SB in the TME and its influence on the immune system provide valuable insights of potentially considering SB as a candidate for adjunctive therapies in NSCLC.
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Affiliation(s)
- Carolin D. Thome
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Patrick Tausche
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Katja Hohenberger
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Zuqin Yang
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Susanne Krammer
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Denis I. Trufa
- Department of Thoracic Surgery, University Medical School Hospital Erlangen (UKER), Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany
| | - Horia Sirbu
- Department of Thoracic Surgery, University Medical School Hospital Erlangen (UKER), Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany
| | - Joachim Schmidt
- Department of Anesthesiology, University Medical School Hospital Erlangen (UKER), Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Susetta Finotto
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
- Bavarian Cancer Research Center (BZKF), Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany
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17
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Afonso J, Barbosa-Matos C, Silvestre R, Pereira-Vieira J, Gonçalves SM, Mendes-Alves C, Parpot P, Pinto J, Carapito Â, Guedes de Pinho P, Santos L, Longatto-Filho A, Baltazar F. Cisplatin-Resistant Urothelial Bladder Cancer Cells Undergo Metabolic Reprogramming beyond the Warburg Effect. Cancers (Basel) 2024; 16:1418. [PMID: 38611096 PMCID: PMC11010907 DOI: 10.3390/cancers16071418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
Advanced urothelial bladder cancer (UBC) patients are tagged by a dismal prognosis and high mortality rates, mostly due to their poor response to standard-of-care platinum-based therapy. Mediators of chemoresistance are not fully elucidated. This work aimed to study the metabolic profile of advanced UBC, in the context of cisplatin resistance. Three isogenic pairs of parental cell lines (T24, HT1376 and KU1919) and the matching cisplatin-resistant (R) sublines were used. A set of functional assays was used to perform a metabolic screening on the cells. In comparison to the parental sublines, a tendency was observed towards an exacerbated glycolytic metabolism in the cisplatin-resistant T24 and HT1376 cells; this glycolytic phenotype was particularly evident for the HT1376/HT1376R pair, for which the cisplatin resistance ratio was higher. HT1376R cells showed decreased basal respiration and oxygen consumption associated with ATP production; in accordance, the extracellular acidification rate was also higher in the resistant subline. Glycolytic rate assay confirmed that these cells presented higher basal glycolysis, with an increase in proton efflux. While the results of real-time metabolomics seem to substantiate the manifestation of the Warburg phenotype in HT1376R cells, a shift towards distinct metabolic pathways involving lactate uptake, lipid biosynthesis and glutamate metabolism occurred with time. On the other hand, KU1919R cells seem to engage in a metabolic rewiring, recovering their preference for oxidative phosphorylation. In conclusion, cisplatin-resistant UBC cells seem to display deep metabolic alterations surpassing the Warburg effect, which likely depend on the molecular signature of each cell line.
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Affiliation(s)
- Julieta Afonso
- Life and Health Sciences Research Institute (ICVS), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.B.-M.); (R.S.); (J.P.-V.); (S.M.G.); (A.L.-F.); (F.B.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
| | - Catarina Barbosa-Matos
- Life and Health Sciences Research Institute (ICVS), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.B.-M.); (R.S.); (J.P.-V.); (S.M.G.); (A.L.-F.); (F.B.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
| | - Ricardo Silvestre
- Life and Health Sciences Research Institute (ICVS), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.B.-M.); (R.S.); (J.P.-V.); (S.M.G.); (A.L.-F.); (F.B.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
| | - Joana Pereira-Vieira
- Life and Health Sciences Research Institute (ICVS), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.B.-M.); (R.S.); (J.P.-V.); (S.M.G.); (A.L.-F.); (F.B.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
| | - Samuel Martins Gonçalves
- Life and Health Sciences Research Institute (ICVS), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.B.-M.); (R.S.); (J.P.-V.); (S.M.G.); (A.L.-F.); (F.B.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
| | - Camille Mendes-Alves
- CQUM, Centre of Chemistry, Chemistry Department, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.M.-A.); (P.P.)
| | - Pier Parpot
- CQUM, Centre of Chemistry, Chemistry Department, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.M.-A.); (P.P.)
- CEB—Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
| | - Joana Pinto
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, University of Porto, 4050-313 Porto, Portugal; (J.P.); (Â.C.); (P.G.d.P.)
- UCIBIO—Applied Molecular Biosciences Unit, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Ângela Carapito
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, University of Porto, 4050-313 Porto, Portugal; (J.P.); (Â.C.); (P.G.d.P.)
- UCIBIO—Applied Molecular Biosciences Unit, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Paula Guedes de Pinho
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, University of Porto, 4050-313 Porto, Portugal; (J.P.); (Â.C.); (P.G.d.P.)
- UCIBIO—Applied Molecular Biosciences Unit, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Lúcio Santos
- Experimental Pathology and Therapeutics Group, Research Center of the Portuguese Institute of Oncology (CI-IPOP), 4200-072 Porto, Portugal;
- Porto Comprehensive Cancer Center (P.CCC), 4200-072 Porto, Portugal
| | - Adhemar Longatto-Filho
- Life and Health Sciences Research Institute (ICVS), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.B.-M.); (R.S.); (J.P.-V.); (S.M.G.); (A.L.-F.); (F.B.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
- Laboratory of Medical Investigation (LIM14), Faculty of Medicine, São Paulo State University, São Paulo 01049-010, Brazil
- Molecular Oncology Research Center, Barretos Cancer Hospital, São Paulo 14784-400, Brazil
| | - Fátima Baltazar
- Life and Health Sciences Research Institute (ICVS), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (C.B.-M.); (R.S.); (J.P.-V.); (S.M.G.); (A.L.-F.); (F.B.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
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18
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Gedawy A, Al-Salami H, Dass CR. Biochemical changes to the inner ear contributing to diabetes-induced hearing loss: possible pharmacological targets for therapy. J Pharm Pharmacol 2024; 76:295-306. [PMID: 38206827 DOI: 10.1093/jpp/rgad124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/19/2023] [Indexed: 01/13/2024]
Abstract
OBJECTIVES Biochemical alterations due to diabetes development and progress are complex and diabetes-associated injury to various tissues has been well reported. Nevertheless, a close investigation of the literature demonstrates limited coverage regarding these biochemical and molecular alterations within the inner ear and their impact on the vestibulocochlear environment. A closer look at these may reveal pharmacological targets that could alleviate the severity of disease in patients. KEY FINDINGS Tight control of glucose levels within the highly metabolic inner ear structures is crucial for their physiology and function. Impaired glucose homeostasis is well known to occur in vestibulocochlear malfunctioning. Moreover, the involvement of insulin signalling, and glucose transporters were recently confirmed in vestibulocochlear structures and are believed to play a crucial role in auditory and vestibular functions. CONCLUSION Oxidative overload, glucolipotoxicity, perturbed blood rheology, endothelial dysfunction, compromised microvascular supply, and neurotoxicity are reported in many diabetic complications such as nephropathy, retinopathy, and diabetic neuropathy and are incriminated in the disruption of blood labyrinth barrier as well as vestibulocochlear neuritis. Dysfunctional insulin signalling was recently reported in the Organ of Corti. Insulin resistance in the inner ear niche warrants further studies to verify and uncover new pharmacological targets to manage this debilitating condition better.
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Affiliation(s)
- Ahmed Gedawy
- Curtin Medical School, Curtin University, Bentley 6102, Australia
- Curtin Health Innovation Research Institute, Bentley 6102, Australia
| | - Hani Al-Salami
- Curtin Medical School, Curtin University, Bentley 6102, Australia
- Curtin Health Innovation Research Institute, Bentley 6102, Australia
| | - Crispin R Dass
- Curtin Medical School, Curtin University, Bentley 6102, Australia
- Curtin Health Innovation Research Institute, Bentley 6102, Australia
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19
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Xiao Q, Huang Q, Ho CT. Asparagine- Glucose Amadori Compounds: Formation, Characterization, and Analysis in Dry Jujube Fruit. J Agric Food Chem 2024; 72:7344-7353. [PMID: 38502793 DOI: 10.1021/acs.jafc.4c00526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Amadori rearrangement products of asparagine with glucose (Asn-Glc-ARP) were first prepared through Maillard model reactions and identified via liquid chromatography-mass spectroscopy. With the study on the effect of the reaction temperature, pH values, and reaction time, the ideal reaction condition for accumulation of Asn-Glc-ARP was determined at 100 °C for 40 min under pH 7. Asparagine (Asn) was prone to degrade from Asn-Glc-ARP in alkaline pH values within a lower temperature range, while in an acidic environment with high temperatures, deamidation of Asn-Glc-ARP to Asp-Glc-ARP (Amadori rearrangement products of aspartic acid with glucose) was displayed as the dominant pathway. The deamidation reaction on the side chain of the amide group took place at Asn-Glc-ARP and transferred it into the hydroxyl group, forming Asp-Glc-ARP at the end. Considering that lyophilization as pretreatment led to limited water activity, a single aspartic acid was not deamidated from Asn directly nor did it degrade from Asp-Glc-ARP even at 120 °C. The degradation of Asn-Glc-ARP through tandem mass spectrometry (MS/MS) analysis showed the obvious fragment ion at m/z 211, indicating that the stable oxonium ion formed during fragmentation. The structure of Asn-Glc-ARP was proposed as 1-deoxy-1-l-asparagino-d-fructose after separation and purification. Also, the content of Asn-Glc-ARP within dry jujube fruit (HeTianYuZao) was quantitated as high as 8.1 ± 0.5 mg/g.
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Affiliation(s)
- Qing Xiao
- Department of Food Science, Rutgers, The State University of New Jersey, 65 Dudley Road, New Brunswick, New Jersey 08901, United States
| | - Qingrong Huang
- Department of Food Science, Rutgers, The State University of New Jersey, 65 Dudley Road, New Brunswick, New Jersey 08901, United States
| | - Chi-Tang Ho
- Department of Food Science, Rutgers, The State University of New Jersey, 65 Dudley Road, New Brunswick, New Jersey 08901, United States
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20
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Grujic M, Alim MA, Hellman L, Peterson M, Pejler G. Mast Cells are Dependent on Glucose Transporter 1 (GLUT1) and GLUT3 for IgE-mediated Activation. Inflammation 2024:10.1007/s10753-024-02011-8. [PMID: 38565760 DOI: 10.1007/s10753-024-02011-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 03/06/2024] [Accepted: 03/21/2024] [Indexed: 04/04/2024]
Abstract
Mast cells (MCs) are known to have a pathological impact in a variety of settings, in particular in allergic conditions. There is also limited evidence implicating MCs in diabetes, raising the possibility that MC function may be influenced by alterations in glucose levels. However, it is not known whether MCs are directly affected by elevated glucose concentrations. Moreover, it is not known which glucose transporters that are expressed by MCs, and whether MCs are dependent on glucose transporters for activation. Here we addressed these issues. We show that MCs express high levels of both glucose transporter 1 (GLUT1/Slc2A1) and GLUT3 (Slc2A3). Further, we show that the inhibition of either GLUT1 or GLUT3 dampens both MC degranulation and cytokine induction in response to IgE receptor crosslinking, and that combined GLUT1 and GLUT3 inhibition causes an even more pronounced inhibition of these parameters. In contrast, the inhibition of GLUT1 or GLUT3, or combined GLUT1 and GLUT3 inhibition, had less impact on the ability of the MCs to respond to activation via compound 48/80. Elevated glucose concentrations did not affect MC viability, and had no stimulatory effect on MC responses to either IgE receptor crosslinking or compound 48/80. Altogether, these findings reveal that MCs are strongly dependent on glucose transport via GLUT1 and/or GLUT3 for optimal responses towards IgE-mediated activation, whereas MC functionality is minimally affected by elevated glucose levels. Based on these findings, antagonists of GLUT1 and GLUT3 may be considered for therapeutic intervention in allergic conditions.
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Affiliation(s)
- Mirjana Grujic
- Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden
| | - Md Abdul Alim
- Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden.
- Uppsala University, Department of Public Health and Caring Sciences, General Medicine, Uppsala, Sweden.
- University of Cambridge, Division of Immunology, Department of Pathology, Cambridge, UK.
| | - Lars Hellman
- Uppsala University, Department of Cell and Molecular Biology, Uppsala, Sweden
| | - Magnus Peterson
- Uppsala University, Department of Public Health and Caring Sciences, General Medicine, Uppsala, Sweden
- Academic Primary Health Care, Region Uppsala, Sweden
| | - Gunnar Pejler
- Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden.
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21
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Harold KM, Matsuzaki S, Pranay A, Loveland BL, Batushansky A, Mendez Garcia MF, Eyster C, Stavrakis S, Chiao YA, Kinter M, Humphries KM. Loss of Cardiac PFKFB2 Drives Metabolic, Functional, and Electrophysiological Remodeling in the Heart. J Am Heart Assoc 2024; 13:e033676. [PMID: 38533937 DOI: 10.1161/jaha.123.033676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 02/20/2024] [Indexed: 03/28/2024]
Abstract
BACKGROUND Phosphofructo-2-kinase/fructose-2,6-bisphosphatase (PFK-2) is a critical glycolytic regulator responsible for upregulation of glycolysis in response to insulin and adrenergic signaling. PFKFB2, the cardiac isoform of PFK-2, is degraded in the heart in the absence of insulin signaling, contributing to diabetes-induced cardiac metabolic inflexibility. However, previous studies have not examined how the loss of PFKFB2 affects global cardiac metabolism and function. METHODS AND RESULTS To address this, we have generated a mouse model with a cardiomyocyte-specific knockout of PFKFB2 (cKO). Using 9-month-old cKO and control mice, we characterized the impacts of PFKFB2 on cardiac metabolism, function, and electrophysiology. cKO mice have a shortened life span of 9 months. Metabolically, cKO mice are characterized by increased glycolytic enzyme abundance and pyruvate dehydrogenase activity, as well as decreased mitochondrial abundance and beta oxidation, suggesting a shift toward glucose metabolism. This was supported by a decrease in the ratio of palmitoyl carnitine to pyruvate-dependent mitochondrial respiration in cKO relative to control animals. Metabolomic, proteomic, and Western blot data support the activation of ancillary glucose metabolism, including pentose phosphate and hexosamine biosynthesis pathways. Physiologically, cKO animals exhibited impaired systolic function and left ventricular dilation, represented by reduced fractional shortening and increased left ventricular internal diameter, respectively. This was accompanied by electrophysiological alterations including increased QT interval and other metrics of delayed ventricular conduction. CONCLUSIONS Loss of PFKFB2 results in metabolic remodeling marked by cardiac ancillary pathway activation. This could delineate an underpinning of pathologic changes to mechanical and electrical function in the heart.
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Affiliation(s)
- Kylene M Harold
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
- Department of Biochemistry and Molecular Physiology University of Oklahoma Health Sciences Center Oklahoma City OK USA
| | - Satoshi Matsuzaki
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
| | - Atul Pranay
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
| | - Brooke L Loveland
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
| | - Albert Batushansky
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
- Ilse Katz Institute for Nanoscale Science & Technology Ben-Gurion University of the Negev Beer Sheva Israel
| | - Maria F Mendez Garcia
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
| | - Craig Eyster
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
| | - Stavros Stavrakis
- Department of Medicine, Section of Cardiovascular Medicine University of Oklahoma Health Sciences Center Oklahoma City OK USA
| | - Ying Ann Chiao
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
- Department of Biochemistry and Molecular Physiology University of Oklahoma Health Sciences Center Oklahoma City OK USA
| | - Michael Kinter
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
| | - Kenneth M Humphries
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation Oklahoma City OK USA
- Department of Biochemistry and Molecular Physiology University of Oklahoma Health Sciences Center Oklahoma City OK USA
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22
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Kumar S, King E, Binns HJ, Christison A, Cuda SE, Yee JK, Joseph M, Kirk S. Diabetes screening outcomes in youth presenting for paediatric weight management: A report of the Paediatric Obesity Weight Evaluation Registry. Pediatr Obes 2024; 19:e13102. [PMID: 38296252 DOI: 10.1111/ijpo.13102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 12/13/2023] [Accepted: 01/04/2024] [Indexed: 03/09/2024]
Abstract
OBJECTIVE Rising prevalence of obesity has led to increased rates of prediabetes and diabetes mellitus (DM) in children. This study compares rates of prediabetes and diabetes using two recommended screening tests (fasting plasma glucose [FPG] and haemoglobin A1c [HbA1c]). STUDY DESIGN Data were collected prospectively from 37 multi-component paediatric weight management programs in POWER (Paediatric Obesity Weight Evaluation Registry). RESULTS For this study, 3962 children with obesity without a known diagnosis of DM at presentation and for whom concurrent measurement of FPG and HbA1c were available were evaluated (median age 12.0 years [interquartile range, IQR 9.8, 14.6]; 48% males; median body mass index 95th percentile [%BMIp95] 134% [IQR 120, 151]). Notably, 10.7% had prediabetes based on FPG criteria (100-125 mg/dL), 18.6% had prediabetes based on HbA1c criteria (5.7%-6.4%), 0.9% had DM by FPG abnormality (≥126 mg/dL) and 1.1% had DM by HbA1c abnormality (≥6.5%). Discordance between the tests was observed for youth in both age groups (10-18 years [n = 2915] and age 2-9 years [n = 1047]). CONCLUSION There is discordance between FPG and HbA1c for the diagnosis of prediabetes and DM in youth with obesity. Further studies are needed to understand the predictive capability of these tests for development of DM (in those diagnosed with prediabetes) and cardiometabolic risk.
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Affiliation(s)
- Seema Kumar
- Division of Pediatric Endocrinology and Metabolism, Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Eileen King
- Division of Biostatistics and Epidemiology, Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Helen J Binns
- Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Amy Christison
- Pediatrics, University of Illinois College of Medicine at Peoria, Peoria, Illinois, USA
| | - Suzanne E Cuda
- Alamo City Healthy Kids and Families, San Antonio, Texas, USA
| | - Jennifer K Yee
- Division of Pediatric Endocrinology, Harbor-UCLA Medical Center and The Lundquist Institute of Biomedical Innovation at Harbor-UCLA, Torrance, California, USA
| | - Madeline Joseph
- College of Medicine, University of Florida, Jacksonville, Florida, United States
| | - Shelley Kirk
- Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
- Center for Better Health and Nutrition, The Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
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23
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Prajapati N, Sharma D, Ashok Bidve P, Chouhan D, Allani M, Kumar Patel S, Ghosh Chowdhury M, Shard A, Tiwari V. Glucose regulation by newly synthesized boronic acid functionalized molecules as dipeptidyl peptidase IV inhibitor: a potential compound for therapeutic intervention in hyperglycaemia. J Biomol Struct Dyn 2024; 42:2859-2871. [PMID: 37254302 DOI: 10.1080/07391102.2023.2215319] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 04/19/2023] [Indexed: 06/01/2023]
Abstract
Management of type 2 diabetes mellitus (T2DM) using dipeptidyl peptidase IV (DPP IV) inhibitors is gaining precedence as this enzyme plays an indispensable role in cleaving and inactivating peptides, such as glucagon-like peptide-1 (GLP-1), incretin hormones, and glucose-dependent insulinotropic polypeptide (GIP). There are several DPP IV inhibitors used to treat T2DM, but limited by side effects such as disturbed GIT, flu-like symptoms, etc. Thus, there is an urgent need for the development of novel and better DPP IV inhibitors for the management of the same. In the present study, we investigated the effect of new boronic acid-based thiazole compounds as DPP IV inhibitors. We used substituted anilines that were progressively modified through a multi-step synthesis and then chemically characterised. These molecules have good binding affinity and molecular interactions at the active site of the DPP IV enzyme. Two boronic acid-based molecules, i.e. PC06R58 and PC06R108, were used for the assessment of their in-vitro enzymatic activities. Both molecules (PC06108 and PC06R58) exhibited potent uncompetitive DPP IV enzyme inhibition at two different concentrations of 90.9 and 15.6 nM, respectively, compared to sitagliptin having an IC50 of 17.3 nM. Furthermore, the oral glucose tolerance test suggested significantly reduced blood glucose levels at 20 mg/kg of the body weight upon administration of PC06R58 and PC06R108 molecules in rats after glucose ingestion (2 g/kg of the body weight). The compounds showed satisfactory DPP IV inhibition. Furthermore, DPP IV inhibitory activity and acceptable pre-ADME/Tox profile indicate it is a lead compound in this novel class of DPP IV inhibitors.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Namrata Prajapati
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Dilip Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
- Department of Anesthesiology, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Pankaj Ashok Bidve
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Deepak Chouhan
- Neuroscience and Pain Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Meghana Allani
- Neuroscience and Pain Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Sagar Kumar Patel
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Moumita Ghosh Chowdhury
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Amit Shard
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
| | - Vinod Tiwari
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Ahmedabad, Gandhinagar, Gujarat, India
- Neuroscience and Pain Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
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24
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Kang EYC, Shen CR, Huang XC, Kang CY, Lin TY, Hong WH, Yang LY, Wu WC, Hwang YS. Noncontact optical device for measuring blood glucose in aqueous humor: a pilot clinical study investigating correlation with blood glucose levels. J Biomed Opt 2024; 29:047001. [PMID: 38638839 PMCID: PMC11025639 DOI: 10.1117/1.jbo.29.4.047001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/06/2024] [Accepted: 03/26/2024] [Indexed: 04/20/2024]
Abstract
Significance Monitoring blood glucose levels is crucial for individuals with diabetes. Noninvasive methods for measuring serum glucose levels have been explored to aid in blood glucose control for diabetes management. Aim We introduced a noncontact optical glucometer (NCGM) for measuring glucose levels in the aqueous humor of the human eye. We also investigated the correlation between glucose levels in the NCGM and the aqueous humor, blood samples, and self-monitoring blood glucose devices. Approach The optical system used in this study measured both the near-infrared absorption and polarized rotatory distribution of glucose molecules in the human aqueous humor. This prospective study's outcomes were eye aqueous glucose level, preoperative blood glucose level, intraoperative blood glucose level, and NCGM reading of patients in a single center in Taiwan. Results The NCGM's measurements showed a strong correlation with blood glucose levels (intra-class correlation [ICC]: 0.95 to 0.98) and aqueous humor glucose levels (ICC: 0.76), indicating its ability to noninvasively measure blood glucose levels in human subjects. Conclusions This NCGM may offer a convenient, pain-free, and rapid tool for measuring blood glucose levels in diabetic patients. The device could represent a significant advancement in noncontact hybrid optical glucose measurement systems.
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Affiliation(s)
- Eugene Yu-Chuan Kang
- Chang Gung Memorial Hospital, Linkou Medical Center, Department of Ophthalmology, Taoyuan, Taiwan
- Chang Gung University, College of Medicine, School of Medicine, Taoyuan, Taiwan
- Chang Gung University, Graduate Institute of Clinical Medical Sciences, Taoyuan, Taiwan
- Columbia University Irving Medical Center, Vagelos College of Physicians and Surgeons, Department of Ophthalmology, New York, United States
| | - Chia-Rui Shen
- Chang Gung University, College of Medicine, Department of Medical Biotechnology and Laboratory Science, Taoyuan, Taiwan
| | - Xin-Cheng Huang
- Chang Gung University, College of Medicine, School of Medicine, Taoyuan, Taiwan
| | - Chun-Ya Kang
- Taipei Medical University Hospital, Department of Education, Taipei, Taiwan
| | - Tzu-Yi Lin
- Chang Gung Memorial Hospital, Linkou Medical Center, Department of Ophthalmology, Taoyuan, Taiwan
- Chang Gung University, College of Medicine, School of Medicine, Taoyuan, Taiwan
| | - Wei-Hsin Hong
- Chang Gung University, College of Medicine, Department of Medical Biotechnology and Laboratory Science, Taoyuan, Taiwan
| | - Lan-Yan Yang
- Chang Gung Memorial Hospital, Clinical Trial Center, Taoyuan, Taiwan
| | - Wei-Chi Wu
- Chang Gung Memorial Hospital, Linkou Medical Center, Department of Ophthalmology, Taoyuan, Taiwan
- Chang Gung University, College of Medicine, School of Medicine, Taoyuan, Taiwan
| | - Yih-Shiou Hwang
- Chang Gung Memorial Hospital, Linkou Medical Center, Department of Ophthalmology, Taoyuan, Taiwan
- Chang Gung University, College of Medicine, School of Medicine, Taoyuan, Taiwan
- Jen-Ai Hospital Dali Branch, Department of Ophthalmology, Taichung, Taiwan
- Xiamen Chang Gung Memorial Hospital, Department of Ophthalmology, Xiamen, China
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25
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Shepard BD, Chau J, Kurtz R, Rosenberg AZ, Sarder P, Border SP, Ginley B, Rodriguez O, Albanese C, Knoer G, Greene A, De Souza AMA, Ranjit S, Levi M, Ecelbarger CM. Nascent shifts in renal cellular metabolism, structure, and function due to chronic empagliflozin in prediabetic mice. Am J Physiol Cell Physiol 2024; 326:C1272-C1290. [PMID: 38602847 DOI: 10.1152/ajpcell.00446.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 02/21/2024] [Accepted: 02/21/2024] [Indexed: 04/13/2024]
Abstract
Sodium-glucose cotransporter, type 2 inhibitors (SGLT2i) are emerging as the gold standard for treatment of type 2 diabetes (T2D) with renal protective benefits independent of glucose lowering. We took a high-level approach to evaluate the effects of the SGLT2i, empagliflozin (EMPA) on renal metabolism and function in a prediabetic model of metabolic syndrome. Male and female 12-wk-old TallyHo (TH) mice, and their closest genetic lean strain (Swiss-Webster, SW) were treated with a high-milk-fat diet (HMFD) plus/minus EMPA (@0.01%) for 12-wk. Kidney weights and glomerular filtration rate were slightly increased by EMPA in the TH mice. Glomerular feature analysis by unsupervised clustering revealed sexually dimorphic clustering, and one unique cluster relating to EMPA. Periodic acid Schiff (PAS) positive areas, reflecting basement membranes and mesangium were slightly reduced by EMPA. Phasor-fluorescent life-time imaging (FLIM) of free-to-protein bound NADH in cortex showed a marginally greater reliance on oxidative phosphorylation with EMPA. Overall, net urine sodium, glucose, and albumin were slightly increased by EMPA. In TH, EMPA reduced the sodium phosphate cotransporter, type 2 (NaPi-2), but increased sodium hydrogen exchanger, type 3 (NHE3). These changes were absent or blunted in SW. EMPA led to changes in urine exosomal microRNA profile including, in females, enhanced levels of miRs 27a-3p, 190a-5p, and 196b-5p. Network analysis revealed "cancer pathways" and "FOXO signaling" as the major regulated pathways. Overall, EMPA treatment to prediabetic mice with limited renal disease resulted in modifications in renal metabolism, structure, and transport, which may preclude and underlie protection against kidney disease with developing T2D.NEW & NOTEWORTHY Renal protection afforded by sodium glucose transporter, type 2 inhibitors (SGLT2i), e.g., empagliflozin (EMPA) involves complex intertwined mechanisms. Using a novel mouse model of obesity with insulin resistance, the TallyHo/Jng (TH) mouse on a high-milk-fat diet (HMFD), we found subtle changes in metabolism including altered regulation of sodium transporters that line the renal tubule. New potential epigenetic determinants of metabolic changes relating to FOXO and cancer signaling pathways were elucidated from an altered urine exosomal microRNA signature.
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Affiliation(s)
- Blythe D Shepard
- Department of Human Science, Georgetown University, Washington, District of Columbia, United States
| | - Jennifer Chau
- Department of Medicine,Georgetown University, Washington, District of Columbia, United States
| | - Ryan Kurtz
- Department of Human Science, Georgetown University, Washington, District of Columbia, United States
| | - Avi Z Rosenberg
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, United States
| | - Pinaki Sarder
- J Crayton Pruitt Department of Biomedical Engineering, University of Florida, Gainesville, Florida, United States
| | - Samuel P Border
- J Crayton Pruitt Department of Biomedical Engineering, University of Florida, Gainesville, Florida, United States
| | - Brandon Ginley
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland, United States
- Department of Computational Cell Biology, Anatomy, and Pathology, State University of New York at Buffalo, Buffalo, New York, United States
| | - Olga Rodriguez
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia, United States
- Center for Translational Imaging, Georgetown University, Washington, District of Columbia, United States
| | - Chris Albanese
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia, United States
- Center for Translational Imaging, Georgetown University, Washington, District of Columbia, United States
- Department of Radiology, Georgetown University, Washington, District of Columbia, United States
| | - Grace Knoer
- Center for Translational Imaging, Georgetown University, Washington, District of Columbia, United States
| | - Aarenee Greene
- Department of Medicine,Georgetown University, Washington, District of Columbia, United States
| | - Aline M A De Souza
- Department of Medicine,Georgetown University, Washington, District of Columbia, United States
| | - Suman Ranjit
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, District of Columbia, United States
- Microscopy & Imaging Shared Resources, Georgetown University, Washington, District of Columbia, United States
| | - Moshe Levi
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, District of Columbia, United States
| | - Carolyn M Ecelbarger
- Department of Medicine,Georgetown University, Washington, District of Columbia, United States
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Walker A, Stewart SD. High concordance of blood glucose measurement in cats between a beta prototype glucometer device and a reference laboratory standard in a clinical setting. J Am Vet Med Assoc 2024; 262:1-5. [PMID: 38190800 DOI: 10.2460/javma.23.08.0457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 12/15/2023] [Indexed: 01/10/2024]
Abstract
OBJECTIVE The objective of this study was to evaluate the accuracy of a beta prototype version of a new portable blood glucose meter in feline patients. ANIMALS 60 client-owned cats. METHODS In this prospective study, 3-mL blood samples were collected from each cat and analyzed in triplicate using a beta prototype device (AlphaTRAK 3 [AT3]) and by a reference lab standard immediately after collection. Accuracy of the AT3 device was determined in accordance with the International Organization of Standardization (ISO) 15197:2013 criteria, including Bland-Altman plotting and consensus error grid analysis. A Passing-Bablok regression analysis was also performed. RESULTS 96% of feline measurements fell within the ISO accuracy threshold, and 100% of measurements fell within zones A and B of the consensus error grid, meeting the ISO accuracy requirements. There was no significant bias in the data according to the Bland-Altman analysis. Within the full range of glucose concentrations (20 to 750 mg/dL) the correlation coefficient between the AT3 and the reference lab standard was 0.99. There was no significant constant or proportional bias present in the data. CLINICAL RELEVANCE The AT3 device met the ISO requirements and is accurate for measurement of blood glucose concentrations in cats.
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Affiliation(s)
- Alex Walker
- 1Massachusetts Veterinary Referral Hospital, Ethos Veterinary Health, Woburn, MA
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Islam MT, Cai J, Allen S, Moreno DG, Bloom SI, Bramwell RC, Mitton J, Horn AG, Zhu W, Donato AJ, Holland WL, Lesniewski LA. Endothelial-Specific Reduction in Arf6 Impairs Insulin-Stimulated Vasodilation and Skeletal Muscle Blood Flow Resulting in Systemic Insulin Resistance in Mice. Arterioscler Thromb Vasc Biol 2024. [PMID: 38545783 DOI: 10.1161/atvbaha.123.319375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
BACKGROUND Much of what we know about insulin resistance is based on studies from metabolically active tissues such as the liver, adipose tissue, and skeletal muscle. Emerging evidence suggests that the vascular endothelium plays a crucial role in systemic insulin resistance; however, the underlying mechanisms remain incompletely understood. Arf6 (ADP ribosylation factor 6) is a small GTPase that plays a critical role in endothelial cell function. Here, we tested the hypothesis that the deletion of endothelial Arf6 will result in systemic insulin resistance. METHODS We used mouse models of constitutive endothelial cell-specific Arf6 deletion (Arf6f/- Tie2Cre) and tamoxifen-inducible Arf6 knockout (Arf6f/f Cdh5CreER+). Endothelium-dependent vasodilation was assessed using pressure myography. Metabolic function was assessed using a battery of metabolic assessments including glucose and insulin tolerance tests and hyperinsulinemic-euglycemic clamps. We used a fluorescence microsphere-based technique to measure tissue blood flow. Skeletal muscle capillary density was assessed using intravital microscopy. RESULTS Endothelial Arf6 deletion impaired insulin-stimulated vasodilation in white adipose tissue and skeletal muscle feed arteries. The impairment in vasodilation was primarily due to attenuated insulin-stimulated NO bioavailability but independent of altered acetylcholine-mediated or sodium nitroprusside-mediated vasodilation. Endothelial cell-specific deletion of Arf6 also resulted in systematic insulin resistance in normal chow-fed mice and glucose intolerance in high-fat diet-fed obese mice. The underlying mechanisms of glucose intolerance were reductions in insulin-stimulated blood flow and glucose uptake in the skeletal muscle and were independent of changes in capillary density or vascular permeability. CONCLUSIONS Results from this study support the conclusion that endothelial Arf6 signaling is essential for maintaining insulin sensitivity. Reduced expression of endothelial Arf6 impairs insulin-mediated vasodilation and results in systemic insulin resistance. These results have therapeutic implications for diseases that are associated with endothelial cell dysfunction and insulin resistance such as diabetes.
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Affiliation(s)
- Md Torikul Islam
- Department of Nutrition and Integrative Physiology, The University of Utah, Salt Lake City. (M.T.I., S.I.B., A.J.D., W.L.H., L.A.L.)
| | - Jinjin Cai
- Division of Geriatrics, Department of Internal Medicine, The University of Utah, Salt Lake City. (J.C., S.A., D.G.M., R.C.B., J.M., A.J.D., L.A.L.)
| | - Shanena Allen
- Division of Geriatrics, Department of Internal Medicine, The University of Utah, Salt Lake City. (J.C., S.A., D.G.M., R.C.B., J.M., A.J.D., L.A.L.)
| | - Denisse G Moreno
- Division of Geriatrics, Department of Internal Medicine, The University of Utah, Salt Lake City. (J.C., S.A., D.G.M., R.C.B., J.M., A.J.D., L.A.L.)
| | - Samuel I Bloom
- Department of Nutrition and Integrative Physiology, The University of Utah, Salt Lake City. (M.T.I., S.I.B., A.J.D., W.L.H., L.A.L.)
| | - R Colton Bramwell
- Division of Geriatrics, Department of Internal Medicine, The University of Utah, Salt Lake City. (J.C., S.A., D.G.M., R.C.B., J.M., A.J.D., L.A.L.)
| | - Jonathan Mitton
- Division of Geriatrics, Department of Internal Medicine, The University of Utah, Salt Lake City. (J.C., S.A., D.G.M., R.C.B., J.M., A.J.D., L.A.L.)
| | - Andrew G Horn
- Department of Kinesiology, Kansas State University, Manhattan (A.G.H.)
| | - Weiquan Zhu
- Division of Cardiovascular Medicine, Department of Internal Medicine, The University of Utah, Salt Lake City. (W.Z.)
- Department of Pathology, The University of Utah, Salt Lake City. (W.Z.)
- Program of Molecular Medicine, The University of Utah, Salt Lake City. (W.Z.)
| | - Anthony J Donato
- Department of Nutrition and Integrative Physiology, The University of Utah, Salt Lake City. (M.T.I., S.I.B., A.J.D., W.L.H., L.A.L.)
- Division of Geriatrics, Department of Internal Medicine, The University of Utah, Salt Lake City. (J.C., S.A., D.G.M., R.C.B., J.M., A.J.D., L.A.L.)
- Department of Biochemistry, The University of Utah, Salt Lake City. (A.J.D.)
- Nora Eccles Harrison Cardiovascular Research and Training Institute, The University of Utah, Salt Lake City. (A.J.D., L.A.L.)
- Veteran's Affairs Medical Center-Salt Lake City, Geriatric Research and Clinical Center, UT (A.J.D., L.A.L.)
| | - William L Holland
- Department of Nutrition and Integrative Physiology, The University of Utah, Salt Lake City. (M.T.I., S.I.B., A.J.D., W.L.H., L.A.L.)
| | - Lisa A Lesniewski
- Department of Nutrition and Integrative Physiology, The University of Utah, Salt Lake City. (M.T.I., S.I.B., A.J.D., W.L.H., L.A.L.)
- Division of Geriatrics, Department of Internal Medicine, The University of Utah, Salt Lake City. (J.C., S.A., D.G.M., R.C.B., J.M., A.J.D., L.A.L.)
- Nora Eccles Harrison Cardiovascular Research and Training Institute, The University of Utah, Salt Lake City. (A.J.D., L.A.L.)
- Veteran's Affairs Medical Center-Salt Lake City, Geriatric Research and Clinical Center, UT (A.J.D., L.A.L.)
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Worth C, Gokul PR, Ramsden K, Worthington S, Salomon-Estebanez M, Maniyar A, Banerjee I. Brain magnetic resonance imaging review suggests unrecognised hypoglycaemia in childhood. Front Endocrinol (Lausanne) 2024; 15:1338980. [PMID: 38616820 PMCID: PMC11010682 DOI: 10.3389/fendo.2024.1338980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 03/21/2024] [Indexed: 04/16/2024] Open
Abstract
Introduction Neonatal and early-life hypoglycaemia, is a frequent finding but is often non-specific and asymptomatic, making detection and diagnosis challenging. Hypoglycaemia-induced cerebral injury can be identified by magnetic resonance imaging (MRI) changes in cerebral white matter, occipital lobes, and posterior parietotemporal regions. It is unknown if children may have hypoglycaemic brain injury secondary to unrecognised hypoglycaemia in early life. We have examined retrospective radiological findings of likely brain injury by neuroimaging to investigate the existence of previous missed hypoglycaemic events. Methods Retrospective MRI data in children in a single tertiary centre, over a ten-year period was reviewed to identify potential cases of unrecognised early-life hypoglycaemia. A detailed search from an electronic radiology repository involved the term "hypoglycaemia'' from text-based reports. The initial report was used for those who required serial scanning. Images specific to relevant reports were further reviewed by a designated paediatric neuroradiologist to confirm likely hypoglycaemia induced brain injury. Medical records of those children were subsequently reviewed to assess if the hypoglycaemia had been diagnosed prior to imaging. Results A total of 107 MR imaging reports were identified for review, and 52 (48.5%) showed typical features strongly suggestive of hypoglycaemic brain injury. Medical note review confirmed no documented clinical information of hypoglycaemia prior to imaging in 22 (42%) patients, raising the likelihood of missed hypoglycaemic events resulting in brain injury. Conclusions We have identified the existence of unrecognised childhood hypoglycaemia through neuroimaging review. This study highlights the need for heightened awareness of early life hypoglycaemia to prevent adverse neurological outcomes later in childhood.
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Affiliation(s)
- Chris Worth
- Department of Paediatric Endocrinology, Royal Manchester Children’s Hospital, Manchester, United Kingdom
| | - Pon Ramya Gokul
- Department of Paediatric Endocrinology, Royal Manchester Children’s Hospital, Manchester, United Kingdom
| | - Katie Ramsden
- Department of Paediatric Endocrinology, Royal Manchester Children’s Hospital, Manchester, United Kingdom
| | - Sarah Worthington
- Department of Paediatric Endocrinology, Royal Manchester Children’s Hospital, Manchester, United Kingdom
| | - Maria Salomon-Estebanez
- Department of Paediatric Endocrinology, Royal Manchester Children’s Hospital, Manchester, United Kingdom
| | - Amit Maniyar
- Department of Radiology, Royal Manchester Children’s Hospital, Manchester, United Kingdom
| | - Indraneel Banerjee
- Department of Paediatric Endocrinology, Royal Manchester Children’s Hospital, Manchester, United Kingdom
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
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Oh SJ, Lee HJ, Hwang JH, Kim HJ, Shin N, Lee SH, Seo SO, Bhatia SK, Yang YH. Validating a Xylose Regulator to Increase Polyhydroxybutyrate Production for Utilizing Mixed Sugars from Lignocellulosic Biomass Using Escherichia coli. J Microbiol Biotechnol 2024; 34:700-709. [PMID: 37919866 PMCID: PMC11016755 DOI: 10.4014/jmb.2306.06006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/29/2023] [Accepted: 09/05/2023] [Indexed: 11/04/2023]
Abstract
Polyhydroxybutyrate (PHB) production from lignocellulosic biomass is economically beneficial. Because lignocellulosic biomass is a mixture rich in glucose and xylose, Escherichia coli, which prefers glucose, needs to overcome glucose repression for efficient biosugar use. To avoid glucose repression, here, we overexpressed a xylose regulator (xylR) in an E. coli strain expressing bktB, phaB, and phaC from Cupriavidus necator and evaluated the effect of xylR on PHB production. XylR overexpression increased xylose consumption from 0% to 46.53% and produced 4.45-fold more PHB than the control strain without xylR in a 1% sugar mixture of glucose and xylose (1:1). When the xylR-overexpressed strain was applied to sugars from lignocellulosic biomass, cell growth and PHB production of the strain showed a 4.7-fold increase from the control strain, yielding 2.58 ± 0.02 g/l PHB and 4.43 ± 0.28 g/l dry cell weight in a 1% hydrolysate mixture. XylR overexpression increased the expression of xylose operon genes by up to 1.7-fold. Moreover, the effect of xylR was substantially different in various E. coli strains. Overall, the results showed the effect of xylR overexpression on PHB production in a non-native PHB producer and the possible application of xylR for xylose utilization in E. coli.
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Affiliation(s)
- Suk-Jin Oh
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Hong-Ju Lee
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Jeong Hyeon Hwang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Hyun Jin Kim
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Nara Shin
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Sang-Ho Lee
- Department of Pharmacy, College of Pharmacy, Jeju National University, Jeju-si 63243, Republic of Korea
| | - Seung-Oh Seo
- Department of Food Science and Technology, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Yung-Hun Yang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
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Wada H, Matsumoto H, Takagiwa M, Sato H, Ishiguchi K, Inoue A, Goto TK. Differences in time-intensity sensory profiles of sweet taste intensity of glucose between older and young adults. Front Nutr 2024; 11:1273055. [PMID: 38606019 PMCID: PMC11006984 DOI: 10.3389/fnut.2024.1273055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 03/04/2024] [Indexed: 04/13/2024] Open
Abstract
Background To understand age-related changes in sweet taste perception in daily life, it is important to understand taste intensity at the suprathreshold level. Previous studies have attempted to characterize the temporal aspects of human taste perception in terms of time-intensity evaluations. The perception of dynamic taste intensity in older adults increases slowly for salty taste; however, there have been no previous studies on time-intensity sensory evaluation of sweet taste in older adults. We hypothesized that older adults perceive sweet taste intensity more slowly than young adults. Methods Fifty young and 40 older adults participated in the study and glucose solutions of 0.6 M and 1.5 M were used as stimuli. The study comprised two experiments: (1) a cup tasting test (static taste perception in the mouth), and (2) a time-intensity sensory evaluation, in which the solutions were presented using a custom-made delivery system. The intra-oral device was made to fit each participant's dentition. Further, the level of gag reflex was taken into consideration for each participant in the design of the intra-oral device. A suction tube was placed across the posterior tongue near the throat to remove solution and saliva. The solution delivery system was controlled by an original computer program. Results Older adults presented significantly different maximum intensity timing and slope for both concentrations compared with young adults (slope for 1.5 M, p < 0.01; others, p < 0.05). No significant differences were found between the older and young adults for reaction timing and maximum intensity. Conclusion We conclude that older adults perceived sweetness more slowly than young adults, and ultimately perceived almost the same intensity as young adults. This is the first reported characterization of the time-intensity profile of sweet taste intensity of glucose in older adults. Using a standardized system enabled us to assess and compare feedback on taste intensities among different age groups in real-time. Based on this, we recommend older adults "savor" to perceive sweet tastes at the same level experienced by young adults.
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Affiliation(s)
- Hirotaka Wada
- Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Hideki Matsumoto
- Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Mutsumi Takagiwa
- Laboratory of Mathematics, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Hitomi Sato
- Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
- Tokyo Dental College Research Branding Project, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Kyoko Ishiguchi
- Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Aya Inoue
- Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Tazuko K. Goto
- Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
- Tokyo Dental College Research Branding Project, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
- Faculty of Dentistry, The University of Hong Kong, Sai Ying Pun, Hong Kong SAR, China
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Zhong W, Zhao A, Wei X, Mao S, Li P, Shen Q, Zhang H, Jiang H, Wang P, Zhang Y. The Effect of Sn-2 Palmitate on Blood Glucose, Lipids and Body Composition in Middle-Aged and Elderly Adults: A Randomized, Double-Blinded Controlled Trial. Nutrients 2024; 16:973. [PMID: 38613008 PMCID: PMC11013204 DOI: 10.3390/nu16070973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 03/18/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Sn-2 palmitate is widely used in infant formula. However, little is known about its effects on metabolism and body composition in middle-aged and elderly adults. In a double-blinded, randomized controlled trial, we enrolled Chinese adults aged 45-75 years with self-reported constipation. Individuals were randomly assigned in a 1:1 ratio to a 1,3-dioleoyl-2-palmitoyl-glycerol (OPO)-enriched oil (66% palmitic acid in the sn-2 position) or a control vegetable oil (24% palmitic acid in the sn-2 position) daily for 24 weeks. Skim milk powder was used as the carrier for both fats. Interviews and body composition were performed at baseline, week 4, week 12 and week 24. A fasting blood draw was taken except at week 4. This study was a secondary analysis and considered exploratory. A total of 111 adults (83 women and 28 men, mean age 64.2 ± 7.0 years) were enrolled, of whom 53 were assigned to the OPO group and 57 to the control group. During the intervention, blood glucose, triglyceride, the triglyceride-glucose index, total cholesterol, low-density lipoprotein cholesterol and remnant cholesterol remained stable, while high-density lipoprotein cholesterol decreased in both groups (p = 0.003). No differences in change were observed between the groups (all p > 0.05). From baseline to week 24, the level of visceral fat increased slightly (p = 0.017), while body weight, total body water, protein, soft lean mass, fat-free mass, skeletal muscle and skeletal muscle mass index (SMI) decreased in two groups (p < 0.01). At weeks 4, 12 and 24, the SMI decreased less in the OPO group than in the control group, with a trend towards significance (p = 0.090). A 24-week daily intake of sn-2-palmitate-enriched oil had no adverse impact on fasting blood glucose, lipids and body composition compared with the control vegetable oil in Chinese adults (funded by Chinese Nutrition Society National Nutrition Science Research Grant, National Key Research and Development Program of China and Wilmar (Shanghai) Biotechnology Research & Development Center Co., Ltd.; ChiCTR1900026480).
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Affiliation(s)
- Wuxian Zhong
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (W.Z.); (S.M.); (P.L.); (Q.S.)
| | - Ai Zhao
- Vanke School of Public Health, Tsinghua University, Beijing 100084, China
| | - Xuetao Wei
- Department of Toxicology, School of Public Health, Peking University, Beijing 100191, China;
| | - Shuai Mao
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (W.Z.); (S.M.); (P.L.); (Q.S.)
| | - Pin Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (W.Z.); (S.M.); (P.L.); (Q.S.)
| | - Qianqian Shen
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (W.Z.); (S.M.); (P.L.); (Q.S.)
| | - Hong Zhang
- Wilmar (Shanghai) Biotechnology Research & Development Center Co., Ltd., Shanghai 200137, China;
| | - Hua Jiang
- School of Nursing, Peking University, Beijing 100191, China
| | - Peiyu Wang
- Department of Social Medicine and Health Education, School of Public Health, Peking University, Beijing 100191, China
| | - Yumei Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (W.Z.); (S.M.); (P.L.); (Q.S.)
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Herraiz T, Salgado A. Formation, Identification, and Occurrence of the Furan-Containing β-Carboline Flazin Derived from l-Tryptophan and Carbohydrates. J Agric Food Chem 2024; 72:6575-6584. [PMID: 38470992 PMCID: PMC10979450 DOI: 10.1021/acs.jafc.3c07773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 02/19/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024]
Abstract
β-Carbolines (βCs) are bioactive indole alkaloids found in foods and in vivo. This work describes the identification, formation, and occurrence in foods of the βC with a furan moiety flazin (1-[5-(hydroxymethyl)furan-2-yl]-9H-pyrido[3,4-b]indole-3-carboxylic acid). Flazin was formed by the reaction of l-tryptophan with 3-deoxyglucosone but not with 5-hydroxymethylfurfural. Its formation was favored in acidic conditions and heating (70-110 °C). The proposed mechanism of formation occurs through the formation of intermediates 3,4-dihydro-β-carboline-3-carboxylic acid (imines), followed by the oxidation to C═O in the carbohydrate chain and aromatization to βC ring with subsequent dehydration steps and cyclization to afford the furan moiety. Flazin is generated in the reactions of tryptophan with carbohydrates. Its formation from fructose was higher than from glucose, whereas sucrose gave flazin under acidic conditions and heating owing to hydrolysis. Flazin was identified in foods by HPLC-MS, and its content was determined by HPLC-fluorescence. It occurred in numerous processed foods, such as tomato products, including crushed tomato puree, fried tomato, ketchup, tomato juices, and jams, but also in soy sauce, beer, balsamic vinegar, fruit juices, dried fruits, fried onions, and honey. Their concentrations ranged from not detected to 22.3 μg/mL, with the highest mean levels found in tomato concentrate (13.9 μg/g) and soy sauce (9.4 μg/mL). Flazin was formed during the heating process, as shown in fresh tomato juice and crushed tomatoes. These results indicate that flazin is widely present in foods and is daily uptaken in the diet.
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Affiliation(s)
- Tomás Herraiz
- Instituto
de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN-CSIC), Spanish National Research Council (CSIC), José Antonio Novais 6, Ciudad Universitaria, Madrid 28040, Spain
| | - Antonio Salgado
- Centro
de Espectroscopía de RMN (CERMN), Universidad de Alcalá (UAH), Campus Universitario Ctra. Madrid-Barcelona km
33.6, Alcalá de Henares, Madrid 28805, Spain
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Dunietz GL, Shedden K, Lyu X, Chervin RD, Baylin A, O'Brien LM, Jansen EC, Wactawski-Wende J, Schisterman EF, Mumford SL. Patterns of Sleep Duration and Metabolic Biomarkers Across the Menstrual Cycle. J Clin Endocrinol Metab 2024:dgae191. [PMID: 38529946 DOI: 10.1210/clinem/dgae191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 03/04/2024] [Accepted: 03/20/2024] [Indexed: 03/27/2024]
Abstract
CONTEXT Along the menstrual cycle, associations between inconsistent sleep duration and levels of metabolic biomarkers are uncertain and could involve fluctuations in estrogen concentrations. OBJECTIVE To examine associations between patterns of sleep duration and metabolic biomarkers across two menstrual cycles within a cohort of premenopausal women. METHODS The BioCycle Study was conducted in New York between 2005-2007, enrolling 259 premenopausal women over two menstrual cycles. This micro-longitudinal cohort study involved intensive data collection including daily sleep diaries and biomarker assessments of leptin, insulin, and glucose at 16 key points timed to menstrual cycle phases. We considered dynamic sleep duration, as hours slept one night or as mean hours slept during the two nights prior to each biomarker assessment. Variability in habitual sleep duration, i.e., reported daily sleep duration, summarized across both menstrual cycles. Variation in habitual sleep duration was computed using L-moments, a robust version of dispersion, skewness, and kurtosis. To examine associations between patterns of sleep duration and metabolic biomarkers, we fitted a series of linear mixed models with random intercepts and inverse probability weighting. These models were adjusted for potential demographic, lifestyle, health confounders, and menstrual cycle phase. RESULTS Sleep duration one night or two nights prior to clinic visits were not associated with metabolic biomarker measures we assessed. However, overall variability (dispersion) in habitual sleep duration was associated with lower mean insulin HOMA-IR levels, but not glucose. Moreover, extreme short or long bouts of sleep duration was associated with higher mean levels of leptin, insulin, and HOMA-IR. CONCLUSIONS These data suggest that variation in habitual sleep duration along the menstrual cycle may be associated with metabolic function.
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Affiliation(s)
- Galit Levi Dunietz
- Division of Sleep Medicine, Department of Neurology, University of Michigan, Ann Arbor, MI 48109
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, 48109
| | - Kerby Shedden
- Department of Statistics, University of Michigan, Ann Arbor, MI, 48109
| | - Xiru Lyu
- Department of Statistics, University of Michigan, Ann Arbor, MI, 48109
| | - Ronald D Chervin
- Division of Sleep Medicine, Department of Neurology, University of Michigan, Ann Arbor, MI 48109
| | - Ana Baylin
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, 48109
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, 48109
| | - Louise M O'Brien
- Division of Sleep Medicine, Department of Neurology, University of Michigan, Ann Arbor, MI 48109
- Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, 48109
| | - Erica C Jansen
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, 48109
| | - Jean Wactawski-Wende
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY
| | - Enrique F Schisterman
- Department of Biostatistics, Epidemiology and Informatics and Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Sunni L Mumford
- Department of Biostatistics, Epidemiology and Informatics and Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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Green JB, Everett BM, Ghosh A, Younes N, Krause-Steinrauf H, Barzilay J, Desouza C, Inzucchi SE, Pokharel Y, Schade D, Scrymgeour A, Tan MH, Utzschneider KM, Mudaliar S. Cardiovascular Outcomes in GRADE (Glycemia Reduction Approaches in Type 2 Diabetes: A Comparative Effectiveness Study). Circulation 2024; 149:993-1003. [PMID: 38344820 PMCID: PMC10978227 DOI: 10.1161/circulationaha.123.066604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 01/05/2024] [Indexed: 02/18/2024]
Abstract
BACKGROUND Cardiovascular disease is a major cause of morbidity and mortality in patients with type 2 diabetes. The effects of glucose-lowering medications on cardiovascular outcomes in individuals with type 2 diabetes and low cardiovascular risk are unclear. We investigated cardiovascular outcomes by treatment group in participants randomly assigned to insulin glargine, glimepiride, liraglutide, or sitagliptin, added to baseline metformin, in GRADE (Glycemia Reduction Approaches in Type 2 Diabetes: A Comparative Effectiveness Study). METHODS A total of 5047 participants with a mean±SD age of 57.2±10.0 years, type 2 diabetes duration of 4.0±2.7 years, and low baseline prevalence of cardiovascular disease (myocardial infarction, 5.1%; cerebrovascular accident, 2.0%) were followed for a median of 5 years. Prespecified outcomes included between-group time-to-first event analyses of MACE-3 (composite of major adverse cardiovascular events: cardiovascular death, myocardial infarction, and stroke), MACE-4 (MACE-3+unstable angina requiring hospitalization or revascularization), MACE-5 (MACE-4+coronary revascularization), MACE-6 (MACE-5+hospitalization for heart failure), and the individual components. MACE outcomes and hospitalization for heart failure in the liraglutide-treated group were compared with the other groups combined using Cox proportional hazards models. MACE-6 was also analyzed as recurrent events using a proportional rate model to compare all treatment groups. RESULTS We observed no statistically significant differences in the cumulative incidence of first MACE-3, MACE-4, MACE-5, or MACE-6, or their individual components, by randomized treatment group. However, when compared with the other treatment groups combined, the liraglutide-treated group had a significantly lower risk of MACE-5 (adjusted hazard ratio, 0.70 [95% CI, 0.54-0.91]; P=0.021), MACE-6 (adjusted hazard ratio, 0.70 [95% CI, 0.55-0.90]; P=0.021), and hospitalization for heart failure (adjusted hazard ratio, 0.49 [95% CI, 0.28-0.86]; P=0.022). Compared with the liraglutide group, significantly higher rates of recurrent MACE-6 events occurred in the groups treated with glimepiride (rate ratio, 1.61 [95% CI, 1.13-2.29]) or sitagliptin (rate ratio 1.75; [95% CI, 1.24-2.48]). CONCLUSIONS This comparative effectiveness study of a contemporary cohort of adults with type 2 diabetes, largely without established cardiovascular disease, suggests that liraglutide treatment may reduce the risk of cardiovascular events in patients at relatively low risk compared with other commonly used glucose-lowering medications. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT01794143.
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Affiliation(s)
- Jennifer B. Green
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC
| | - Brendan M. Everett
- Divisions of Cardiovascular and Preventive Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Alokananda Ghosh
- The Biostatistics Center, Department of Biostatistics and Bioinformatics, Milken Institute School of Public Health, George Washington University, Rockville, MD
| | - Naji Younes
- The Biostatistics Center, Department of Biostatistics and Bioinformatics, Milken Institute School of Public Health, George Washington University, Rockville, MD
| | - Heidi Krause-Steinrauf
- The Biostatistics Center, Department of Biostatistics and Bioinformatics, Milken Institute School of Public Health, George Washington University, Rockville, MD
| | - Joshua Barzilay
- Division of Endocrinology, Kaiser Permanente of Georgia, and Department of Endocrinology, Emory University School of Medicine, Atlanta, GA
| | - Cyrus Desouza
- Division of Diabetes, Endocrinology & Metabolism, University of Nebraska Medical Center, Omaha VA Medical Center, Omaha, NE
| | | | - Yashashwi Pokharel
- Division of Cardiology, Wake Forest University School of Medicine, Winston-Salem, NC
| | - David Schade
- Division of Endocrinology, University of New Mexico School of Medicine, Albuquerque, NM
| | - Alexandra Scrymgeour
- VA Cooperative Studies Program Clinical Research Pharmacy Coordinating Center, Albuquerque, NM
| | - Meng H. Tan
- Division of Metabolism, Endocrinology & Diabetes, Department of Internal Medicine, University of Michigan, Ann Arbor, MI
| | | | - Sunder Mudaliar
- VA San Diego Healthcare System and University of California, San Diego, CA
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Battarbee AN, Sauer SM, Sanusi A, Fulcher I. Discrete glucose profiles identified using continuous glucose monitoring data and their association with adverse pregnancy outcomes. Am J Obstet Gynecol 2024:S0002-9378(24)00455-1. [PMID: 38527606 DOI: 10.1016/j.ajog.2024.03.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 03/27/2024]
Abstract
BACKGROUND Continuous glucose monitoring (CGM) has facilitated the evaluation of dynamic changes in glucose throughout the day and their effect on fetal growth abnormalities in pregnancy. However, studies of multiple CGM metrics combined and their association with other adverse pregnancy outcomes are limited. OBJECTIVE Our goals were to 1) use machine-learning techniques to identify discrete glucose profiles based on weekly CGM metrics in pregnant individuals with pregestational diabetes and, 2) investigate their association with adverse pregnancy outcomes. STUDY DESIGN We analyzed data from a retrospective cohort study of pregnant patients with type 1 or type 2 diabetes who used Dexcom G6 CGM and delivered a non-anomalous, singleton gestation at a tertiary center between 2019 and 2023. CGM data were collapsed into 39 weekly glycemic measures related to centrality, spread, excursions, and circadian cycle patterns. Principal component analysis and k-means clustering were used to identify 4 discrete groups, and patients were assigned to the group that best represented their CGM patterns during pregnancy. Finally, the association between glucose profile groups and outcomes (preterm birth, cesarean delivery, preeclampsia, large-for-gestational-age (LGA) neonate, neonatal hypoglycemia, and neonatal intensive care unit (NICU) admission) was estimated using multivariate logistic regression adjusted for diabetes type, maternal age, insurance, CGM use before pregnancy, and parity. RESULTS Of 177 included patients, 90 (50.8%) had type 1 diabetes and 85 (48.3%) had type 2 diabetes. We identified 4 glucose profiles: 1) well-controlled, 2) suboptimally controlled with high variability, fasting hypoglycemia and daytime hyperglycemia, 3) suboptimally controlled with minimal circadian variation, and 4) poorly controlled with peak hyperglycemia overnight. Compared to the well-controlled profile, the suboptimally controlled with high variability had higher odds of LGA neonate (aOR 3.34, 95% CI 1.15-9.89). The suboptimally controlled with minimal circadian variation profile had higher odds of preterm birth (aOR 2.59, 95% CI 1.10-6.24), cesarean delivery (aOR 2.76, 95% CI 1.09-7.46), and NICU admission (aOR 4.08, 95% CI 1.58-11.4). The poorly controlled with peak hyperglycemia overnight profile had higher odds of preeclampsia (aOR 2.54, 95% CI 1.02-6.52), LGA neonate (aOR 3.72, 95% CI 1.37-10.4), neonatal hypoglycemia (aOR 3.53, 95% CI 1.37-9.71), and NICU admission (aOR 3.15, 95% CI 1.20, 9.09). CONCLUSION Discrete glucose profiles of pregnant individuals with pregestational diabetes were identified through joint consideration of multiple CGM metrics. Prolonged exposure to maternal hyperglycemia may be associated with higher risk of adverse pregnancy outcomes compared to suboptimal glycemic control characterized by high glucose variability and intermittent hyperglycemia.
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Affiliation(s)
- Ashley N Battarbee
- Center for Women's Reproductive Health, University of Alabama at Birmingham; Birmingham, AL; Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Alabama at Birmingham; Birmingham AL.
| | - Sara M Sauer
- Delfina Care; San Francisco, CA; Department of Global Health and Social Medicine, Harvard Medical School; Boston, MA
| | - Ayodeji Sanusi
- Center for Women's Reproductive Health, University of Alabama at Birmingham; Birmingham, AL; Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Alabama at Birmingham; Birmingham AL
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Maduta CS, McCormick JK, Dufresne K. Vaginal community state types (CSTs) alter environmental cues and production of the Staphylococcus aureus toxic shock syndrome toxin-1 (TSST-1). J Bacteriol 2024; 206:e0044723. [PMID: 38334326 PMCID: PMC10955855 DOI: 10.1128/jb.00447-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 01/20/2024] [Indexed: 02/10/2024] Open
Abstract
Menstrual toxic shock syndrome (mTSS) is a rare but life-threatening disease associated with the use of high-absorbency tampons. The production of the Staphylococcus aureus toxic shock syndrome toxin-1 (TSST-1) superantigen is involved in nearly all cases of mTSS and is tightly controlled by regulators responding to the environment. In the prototypic mTSS strain S. aureus MN8, the major repressor of TSST-1 is the carbon catabolite protein A (CcpA), which responds to glucose concentrations in the vaginal tract. Healthy vaginal Lactobacillus species also depend on glucose for both growth and acidification of the vaginal environment through lactic acid production. We hypothesized that interactions between the vaginal microbiota [herein referred to as community state types (CSTs)] and S. aureus MN8 depend on environmental cues and that these interactions subsequently affect TSST-1 production. Using S. aureus MN8 ΔccpA growing in various glucose concentrations, we demonstrate that the supernatants from different CSTs grown in vaginally defined medium (VDM) could significantly decrease tst expression. When co-culturing CST species with MN8 ∆ccpA, we show that Lactobacillus jensenii completely inhibits TSST-1 production in conditions mimicking healthy menstruation or mTSS. Finally, we show that growing S. aureus in "unhealthy" or "transitional" CST supernatants results in higher interleukin 2 (IL-2) production from T cells. These findings suggest that dysbiotic CSTs may encourage TSST-1 production in the vaginal tract and further indicate that the CSTs are likely important for the protection from mTSS.IMPORTANCEIn this study, we investigate the impact of the vaginal microbiota against Staphylococcus aureus in conditions mimicking the vaginal environment at various stages of the menstrual cycle. We demonstrate that Lactobacillus jensenii can inhibit toxic shock syndrome toxin-1 (TSST-1) production, suggesting the potential for probiotic activity in treating and preventing menstrual toxic shock syndrome (mTSS). On the other side of the spectrum, "unhealthy" or "transient" bacteria such as Gardnerella vaginalis and Lactobacillus iners support more TSST-1 production by S. aureus, suggesting that community state types are important in the development of mTSS. This study sets forward a model for examining contact-independent interactions between pathogenic bacteria and the vaginal microbiota. It also demonstrates the necessity of replicating the environment when studying one as dynamic as the vagina.
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Affiliation(s)
- Carla S. Maduta
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
| | - John K. McCormick
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
| | - Karine Dufresne
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
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Boucheta H, Zouaoui E, Ferkous H, Madaci A, Yadav KK, Benguerba Y. Advancing Diabetes Management: The Future of Enzyme-Less Nanoparticle-Based Glucose Sensors-A Review. J Diabetes Sci Technol 2024:19322968241236211. [PMID: 38506487 DOI: 10.1177/19322968241236211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
BACKGROUND Glucose is vital for biological processes, requiring blood sugar levels to be maintained between 3.88 and 6.1 mmol/L, especially during fasting. Elevated levels signal diabetes, a global concern affecting 537 million people, necessitating effective glucose-monitoring devices. METHOD Enzyme-based sensors, though selective, are sensitive to environmental factors. Nonenzymatic sensors, especially those with nanoparticles, offer stability, high surface area, and cost-effectiveness. Existing literature supports their immediate glucose oxidation, showcasing exceptional sensitivity. RESULTS This review details nonenzymatic sensors, highlighting materials, detection limits, and the promise of nanoparticle-based designs, which exhibit enhanced sensitivity and selectivity in glucose detection. CONCLUSION Nanoparticle-based sensors, as reviewed, show potential for glucose monitoring, overcoming enzyme-based limitations. The conclusion suggests future directions for advancing these sensors, emphasizing ongoing innovation in this critical research area.
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Affiliation(s)
- Hana Boucheta
- Laboratory of Physico-Chemistry Research on Surfaces and Interfaces, University of 20 August 1955, Skikda, Algeria
- Department of Process Engineering, Faculty of Technology, University of 20 August 1955, Skikda, Algeria
- Laboratory of Catalysis, Bio-Process and Environment, Department of Process Engineering, University of 20 August 1955, Skikda, Algeria
| | - Emna Zouaoui
- Department of Process Engineering, Faculty of Technology, University of 20 August 1955, Skikda, Algeria
- Laboratory of Catalysis, Bio-Process and Environment, Department of Process Engineering, University of 20 August 1955, Skikda, Algeria
| | - Hana Ferkous
- Laboratory of Mechanical Engineering and Materials, Faculty of Technology, University of 20 August 1955, Skikda, Algeria
| | - Anis Madaci
- Institute of Analytical Sciences, University of Lyon, Villeurbanne, France
- Laboratory of Materials and Electronics Systems, University El-Bachir El-Ibrahimi Bordj Bou Arreridj, Bordj Bou Arreridj, Algeria
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Bhopal, India
- Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Nasiriyah, Iraq
| | - Yacine Benguerba
- Laboratoire de Biopharmacie et Pharmacotechnie, Université Ferhat Abbas Sétif-1, Sétif, Algeria
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Fang H, Li Q, Wang H, Ren Y, Zhang L, Yang L. Maternal nutrient metabolism in the liver during pregnancy. Front Endocrinol (Lausanne) 2024; 15:1295677. [PMID: 38572473 PMCID: PMC10987773 DOI: 10.3389/fendo.2024.1295677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 03/08/2024] [Indexed: 04/05/2024] Open
Abstract
The liver plays pivotal roles in nutrient metabolism, and correct hepatic adaptations are required in maternal nutrient metabolism during pregnancy. In this review, hepatic nutrient metabolism, including glucose metabolism, lipid and cholesterol metabolism, and protein and amino acid metabolism, is first addressed. In addition, recent progress on maternal hepatic adaptations in nutrient metabolism during pregnancy is discussed. Finally, the factors that regulate hepatic nutrient metabolism during pregnancy are highlighted, and the factors include follicle-stimulating hormone, estrogen, progesterone, insulin-like growth factor 1, prostaglandins fibroblast growth factor 21, serotonin, growth hormone, adrenocorticotropic hormone, prolactin, thyroid stimulating hormone, melatonin, adrenal hormone, leptin, glucagon-like peptide-1, insulin glucagon and thyroid hormone. Our vision is that more attention should be paid to liver nutrient metabolism during pregnancy, which will be helpful for utilizing nutrient appropriately and efficiently, and avoiding liver diseases during pregnancy.
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Affiliation(s)
- Hongxu Fang
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Qingyang Li
- College of Life Sciences, Hebei Normal University, Shijiazhuang, China
| | - Haichao Wang
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Ying Ren
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Leying Zhang
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Ling Yang
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
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Rawat SS, Laxmi A. Sugar signals pedal the cell cycle! Front Plant Sci 2024; 15:1354561. [PMID: 38562561 PMCID: PMC10982403 DOI: 10.3389/fpls.2024.1354561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/19/2024] [Indexed: 04/04/2024]
Abstract
Cell cycle involves the sequential and reiterative progression of important events leading to cell division. Progression through a specific phase of the cell cycle is under the control of various factors. Since the cell cycle in multicellular eukaryotes responds to multiple extracellular mitogenic cues, its study in higher forms of life becomes all the more important. One such factor regulating cell cycle progression in plants is sugar signalling. Because the growth of organs depends on both cell growth and proliferation, sugars sensing and signalling are key control points linking sugar perception to regulation of downstream factors which facilitate these key developmental transitions. However, the basis of cell cycle control via sugars is intricate and demands exploration. This review deals with the information on sugar and TOR-SnRK1 signalling and how they manoeuvre various events of the cell cycle to ensure proper growth and development.
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Affiliation(s)
| | - Ashverya Laxmi
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, India
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Benković M, Laljak I, Valinger D, Jurina T, Sokač Cvetnić T, Gajdoš Kljusurić J, Jurinjak Tušek A. Comparison of the Adsorption and Desorption Dynamics of Biological Molecules on Alginate Hydrogel Microcapsules-The Case of Sugars, Polyphenols, and Proteins. Gels 2024; 10:201. [PMID: 38534619 DOI: 10.3390/gels10030201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 03/28/2024] Open
Abstract
The aim of this work was to analyze and compare the adsorption and desorption processes of carbohydrates (glucose as a model molecule), polyphenols (gallic acid as a model molecule), and proteins (bovine serum albumin, BSA as a model molecule) on alginate microcapsules. The adsorption and desorption processes were described by mathematical models (pseudo-first-order, pseudo-second-order, and Weber-Morris intraparticle diffusion model for adsorption, and first-order, Korsmeyer-Peppas, and the Higuchi model for desorption) in order to determine the dominant mechanisms responsible for both processes. By comparing the values of adsorption rate (k2) and initial adsorption rate (h0) based on the pseudo-first-order model, the lowest values were recorded for BSA (k1 = 0.124 ± 0.030 min-1), followed by glucose (k1 = 0.203 ± 0.041 min-1), while the model-obtained values for gallic acid were not considered significant at p < 0.05. For glucose and gallic acid, the limiting step of the adsorption process is the chemical sorption of substances, and the rate of adsorption does not depend on the adsorbate concentration, but depends on the capacity of the hydrogel adsorbent. Based on the desorption rates determined by the Korsmeyer-Peppas model (k), the highest values were recorded for gallic acid (k = 3.66236 ± 0.20776 g beads/mg gallic acid per min), followed by glucose (k = 2.55760 ± 0.16960 g beads/mg glucose per min) and BSA (k = 0.78881 ± 0.11872 g beads/mg BSA per min). The desorption process from alginate hydrogel microcapsules is characterized by the pseudo Fickian diffusion mechanism.
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Affiliation(s)
- Maja Benković
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Izvorka Laljak
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Davor Valinger
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Tamara Jurina
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Tea Sokač Cvetnić
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Jasenka Gajdoš Kljusurić
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Ana Jurinjak Tušek
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
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Luo S, Zheng S, Li Z, Cao J, Wang B, Xu Y, Chong K. Monosaccharide transporter OsMST6 is activated by transcription factor OsERF120 to enhance chilling tolerance in rice seedlings. J Exp Bot 2024:erae123. [PMID: 38490694 DOI: 10.1093/jxb/erae123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Indexed: 03/17/2024]
Abstract
Chilling stress caused by extreme weather is threatening global rice (Oryza sativa L.) production. Identifying components of the signal transduction pathways underlying chilling tolerance in rice would advance molecular breeding. Here, we report that OsMST6, which encodes a monosaccharide transporter, positively regulates the chilling tolerance of rice seedlings. The mst6 mutants showed hypersensitivity to chilling, while the OsMST6 overexpression lines were tolerant. During chilling stress, OsMST6 transported more glucose into cells to modulate sugar and ABA signal pathways. We showed that the transcription factor OsERF120 could bind to the DRE/CRT element of the OsMST6 promoter and activate the expression of OsMST6 to positively regulate chilling tolerance. Genetically, OsERF120 was functionally dependent on OsMST6 when promoting chilling tolerance. In summary, OsERF120 and OsMST6 form a new downstream chilling regulatory pathway in rice in response to chilling stress, providing valuable findings for molecular breeding aimed at achieving global food security.
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Affiliation(s)
- Shengtao Luo
- The Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Shuangshuang Zheng
- The Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhitao Li
- The Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Cao
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Wang
- The Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yunyuan Xu
- The Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Kang Chong
- The Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
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Zhang J, Le Leu RK, Xu Q, Bennett P. The futility of post-haemodialysis blood glucose levels: A retrospective cohort study. J Ren Care 2024. [PMID: 38477224 DOI: 10.1111/jorc.12492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024]
Abstract
BACKGROUND Frequent blood glucose tests are performed for people with diabetes receiving haemodialysis. OBJECTIVES To determine the rate of out-of-range post-haemodialysis blood glucose levels that are clinically acted upon, the intervention and outcome of each intervention, and the associations between post-haemodialysis blood glucose levels and relevant clinical predictors. DESIGN 12-month retrospective cohort medical record review in one Australian haemodialysis centre. Post-haemodialysis blood glucose levels, prehaemodialysis blood glucose levels, time of treatment, diabetes medications, intradialytic fluid removal, dialysate dextrose concentration, clinical actions, interventions, and outcomes on out-of-range blood glucose levels were retrieved. PARTICIPANTS 22 participants with a median time receiving dialysis 3.1 years (interquartile range 2.3-4.7). MEASUREMENTS AND RESULTS The proportion of out-of-range post-haemodialysis blood glucose levels was 87.3% (95% confidence interval, 86.1%-88.5%). No out-of-range post-haemodialysis blood glucose levels were clinically acted upon. Out-of-range post-haemodialysis blood glucose levels were 4.6 times more likely if a higher dextrose bath was used (95% confidence interval: 3.3; 6.3. p < 0.001). The odds of the post-haemodialysis blood glucose levels increased by each 1 mmol/L. Intradialytic fluid removal, dialysate dextrose concentration, sex, dialysis time, anti-hyperglycaemic agents were also associated with out-of-range post-haemodialysis blood glucose levels. CONCLUSION Routine post-haemodialysis blood glucose levels testing has limited clinical utility in care for people with diabetes receiving maintenance haemodialysis. Higher dextrose dialysate may require individual titration depending on prehaemodialysis blood glucose levels.
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Affiliation(s)
- Jing Zhang
- Central Adelaide Local Health Network, Adelaide, South Australia, Australia
| | - Richard K Le Leu
- Central Adelaide Local Health Network, Adelaide, South Australia, Australia
| | - Qunyan Xu
- Clinical & Health Sciences, University of South Australia, Adelaide, Australia
| | - Paul Bennett
- School of Nursing and Midwifery, Griffith Health, Griffith University, Brisbane, Queensland, Australia
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Cusquisibán-Alcantara Y, Toledo-Garrido C, Calizaya-Milla YE, Carranza-Cubas SP, Saintila J. Impact of a Nutrition Education Intervention on Knowledge, Healthy Eating Index, and Biochemical Profile in a Rural Community in Peru. J Multidiscip Healthc 2024; 17:1111-1125. [PMID: 38505652 PMCID: PMC10949373 DOI: 10.2147/jmdh.s440195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/19/2023] [Indexed: 03/21/2024] Open
Abstract
Background Non-communicable diseases in adults and anemia in children represent a major global public health problem, with multiple causes including poor dietary quality. However, nutrition education interventions can empower individuals to make appropriate dietary changes. Objective To evaluate the impact of a nutritional education intervention on nutrition knowledge (NK), healthy eating index (HEI), and biochemical profile in families in the community in Peru. Methods A pre-experimental study was conducted in the community of Sinchicuy, located on the banks of the Amazon River, Iquitos, Peru. Nutrition education was provided over a 16-week period to a total of 61 heads of household (23 children under 5 years of age and 23 older adults). Fasting glucose and hemoglobin (Hb) concentration analyses were also carried out before and after the intervention. Results After the intervention, a significant improvement in the NK score was observed, increasing by 90% (p < 0.001). Additionally, the average HEI scores experienced a significant increase, rising by approximately 11.4% (p < 0.001). In children under 5 years of age, the Hb level showed a significant increase of 5.1% (p = 0.017). However, no statistically significant difference in glucose concentration was observed in older adults after the intervention. Conclusion The findings of this study indicated a positive impact on NK, HEI, and Hb in heads of households, older adults, and children under five in a rural community where there is limited access to basic services.
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Affiliation(s)
| | - Cesia Toledo-Garrido
- Research Group for Nutrition and Lifestyle, School of Human Nutrition, Universidad Peruana Unión, Lima, Perú
| | - Yaquelin E Calizaya-Milla
- Research Group for Nutrition and Lifestyle, School of Human Nutrition, Universidad Peruana Unión, Lima, Perú
| | | | - Jacksaint Saintila
- School of Medicine, Faculty of Health Sciences, Universidad Señor de Sipán, Chiclayo, Perú
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Bakhach H, Nuffer M, Tall Bull S, Nuffer W. A Systematic Review Evaluating Cinnamon's Effects on Glucose Utilizing a Ranking System to Assess Bias and Study Quality. J Med Food 2024. [PMID: 38466959 DOI: 10.1089/jmf.2023.0277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
In the context of diabetes, the use of cinnamon continues to be among the most popular supplements taken by patients for glucose control. To strategically evaluate the available literature comparing various cinnamon species and statistically significant glucose effects after ranking studies based on two tools to assess bias and overall study quality, to clarify cinnamon's role in glucose control. The authors performed a systematic search based upon PRISMA guidelines. The search was conducted utilizing PubMed, AMED, CINAHL, EMBASE, Cochrane, and Medline databases, with the final search performed in September 2022 with restrictions to human subjects and English language. Electronic searches were conducted utilizing the keywords "diabetes mellitus" combined with Cinnamomum zeylanicum/Cinnamomum cassia/Cinnamomum verum combined with blood glucose (BG). A second search utilized "cinnamomum zeylanicum/cinnamomum cassia/cinnamomum verum" combined with "blood glucose," and a final search utilized "diabetes mellitus" combined with "cinnamon." Data extraction and ranking of included studies utilizing the risk of bias 2 tool and modified Heyland Methodological Quality Scoring tool were performed independently by two review authors. These authors compared their results and reconciled any differences in scoring to generate a final ranking of studies. A third author was available for any discrepancies that could not be resolved but was not needed. Forty-five studies were included in the review and were scored for bias and quality. Overall 62% demonstrated statistical significance for positive effects in at least one parameter around BG control. Applying the ranking systems reduced the percentage closer to 50%. Safety was extremely well documented across studies with few adverse effects. Results are limited by heterogeneity of glucose parameters, leading to studies being ranked individually and not synthesized. Cinnamon supplementation likely has a modest positive effect on BG. Based upon the strong safety profile, utilization of this spice as an adjunct to pharmacologic therapy is reasonable.
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Affiliation(s)
- Hebat Bakhach
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado, USA
| | - Monika Nuffer
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado, USA
| | - Shasta Tall Bull
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado, USA
| | - Wesley Nuffer
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado, USA
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Liu H, Li J, Wu N, She Y, Luo Y, Huang Y, Quan H, Fu W, Li X, Zeng D, Jia Y. Supplementing Glucose Intake Reverses the Inflammation Induced by a High-Fat Diet by Increasing the Expression of Siglec-E Ligands on Erythrocytes. Inflammation 2024:10.1007/s10753-023-01932-0. [PMID: 38448631 DOI: 10.1007/s10753-023-01932-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 03/08/2024]
Abstract
Siglec-9/E is a cell surface receptor expressed on immune cells and can be activated by sialoglycan ligands to play an immunosuppressive role. Our previous study showed that increasing the expression of Siglec-9 (the human paralog of mouse Siglec-E) ligands maintains functionally quiescent immune cells in the bloodstream, but the biological effects of Siglec-9 ligand alteration on atherogenesis were not further explored. In the present study, we demonstrated that the atherosclerosis risk factor ox-LDL or a high-fat diet could decrease the expression of Siglec-9/E ligands on erythrocytes. Increased expression of Siglec-E ligands on erythrocytes caused by dietary supplementation with glucose (20% glucose) had anti-inflammatory effects, and the mechanism was associated with glucose intake. In high-fat diet-fed apoE-/- mice, glucose supplementation decreased the area of atherosclerotic lesions and peripheral inflammation. These data suggested that increased systemic inflammation is attenuated by increasing the expression of Siglec-9/E ligands on erythrocytes. Therefore, Siglec-9/E ligands might be valuable targets for atherosclerosis therapy.
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Affiliation(s)
- Hongmei Liu
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Jin Li
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Niting Wu
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Yuanting She
- Department of Haematology, Daping Hospital of Army Medical University, Chongqing, 400042, China
| | - Yadan Luo
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Yan Huang
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Hongyu Quan
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Wenying Fu
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Xiaohui Li
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Dongfeng Zeng
- Department of Haematology, Daping Hospital of Army Medical University, Chongqing, 400042, China.
| | - Yi Jia
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China.
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Zhu C, Timothy CL, McCobb E, Rozanski EA, Schoeffler GL. Resource setting impacts neonatal but not maternal survival in bitches treated for dystocia: 243 cases (2015-2020). J Am Vet Med Assoc 2024:1-7. [PMID: 38452478 DOI: 10.2460/javma.23.09.0516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/31/2024] [Indexed: 03/09/2024]
Abstract
OBJECTIVE To compare maternal and fetal outcomes of dystocia managed surgically and nonsurgically at referral hospitals (RHs) versus community medicine clinics (CMCs), determine the rate of C-section, and evaluate the incidence of hypoglycemia and hypocalcemia in bitches presented with dystocia. ANIMALS Bitches presented with dystocia at 2 RHs and 2 CMCs. METHODS Information on signalment, presence of hypoglycemia and/or hypocalcemia, diagnostic imaging performed, nonsurgical and surgical interventions performed, maternal and fetal outcomes, and total cost of care was obtained from the electronic medical records of bitches presenting for dystocia between October 2015 and October 2020. Descriptive statistics were performed and outcome compared between RHs and CMCs using a Fisher exact test, with a P < .05 considered significant. RESULTS 230 bitches were evaluated with 243 separate episodes of dystocia, with 183 (75%) episodes treated at an RH and 60 (25%) at a CMC. There was a low incidence of hypoglycemia (5% [9/178]) and ionized hypocalcemia (1% [2/164]). Seventy-three percent (177/243) of bitches underwent surgical intervention, 25% (61/243) received nonsurgical management, and 2% (5/243) transferred to their primary veterinarian. There was no difference in survival for bitches operated at an RH compared with a CMC. However, bitches operated at an RH were more likely (P = .04) to be discharged with at least 1 live neonate. CLINICAL RELEVANCE In bitches diagnosed with dystocia, hypoglycemia and hypocalcemia were rare. The majority of bitches underwent a C-section. The setting where the C-section was performed did not impact maternal survival.
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Affiliation(s)
- Cece Zhu
- 1Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA
- 2College of Veterinary Medicine, Cornell University, Ithaca, NY
| | - Clare L Timothy
- 1Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA
| | - Emily McCobb
- 1Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA
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Liu X, Li Y, Chen X, Yin H, Li F, Chen N, Cui J, Li W. Revisiting the mechanisms linking blood glucose to cognitive impairment: new evidence for the potential important role of klotho. Front Endocrinol (Lausanne) 2024; 15:1323407. [PMID: 38505757 PMCID: PMC10948412 DOI: 10.3389/fendo.2024.1323407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 02/21/2024] [Indexed: 03/21/2024] Open
Abstract
Background The association between blood glucose and cognition is controversial. Klotho is an anti-aging protein with neural protective effects. This study aimed to use a population-based study to disentangle the relationship between blood glucose levels and cognitive function in older adults, and to explore the role of klotho in it. Methods A total of 1445 eligible participants from National Health and Nutrition Examination Survey (NHANES) 2011-2014 were included in our study. Cognitive function was assessed by Digit Symbol Substitution Test (DSST) and categorized into four quartiles (Q1-Q4). General characteristics and laboratory test results including serum klotho concentration and blood glucose levels were collected. Associations of cognitive function and klotho levels with blood glucose concentrations were explored through multivariate linear regression models. Mediation models were constructed to figure out the mediating role of klotho. Results All three multivariate linear regression models showed a negative correlation between blood glucose and cognitive function. (Model 1, β=-0.149, 95%CI: -0.202,-0.096, p=0.001; Model 2, β=-0.116, 95%CI: -0.167,-0.065, p=0.001; Model 3, β=-0.007, 95%CI: -0.118,-0.023, p=0.003). Mediation analysis showed that klotho mediated the statistical association between blood glucose level and cognitive function with proportions (%) of 12.5. Conclusion Higher blood glucose levels are associated with poorer cognitive performance in non-diabetic older adults, partially mediated through lower klotho levels.
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Affiliation(s)
- Xiangliang Liu
- Cancer Center, The First Affiliated Hospital of Jilin University, Changchun, China
| | - Yuguang Li
- Cancer Center, The First Affiliated Hospital of Jilin University, Changchun, China
| | - Xinqiao Chen
- Cancer Center, The First Affiliated Hospital of Jilin University, Changchun, China
| | - Hongmei Yin
- Department of General Practice, The First Affiliated Hospital of Jilin University, Changchun, China
| | - Fangqi Li
- Cancer Center, The First Affiliated Hospital of Jilin University, Changchun, China
| | - Naifei Chen
- Cancer Center, The First Affiliated Hospital of Jilin University, Changchun, China
| | - Jiuwei Cui
- Cancer Center, The First Affiliated Hospital of Jilin University, Changchun, China
| | - Wei Li
- Cancer Center, The First Affiliated Hospital of Jilin University, Changchun, China
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Morley-Fletcher S, Gaetano A, Gao V, Gatta E, Van Camp G, Bouwalerh H, Thomas P, Nicoletti F, Maccari S. Postpartum Oxytocin Treatment via the Mother Reprograms Long-Term Behavioral Disorders Induced by Early Life Stress on the Plasma and Brain Metabolome in the Rat. Int J Mol Sci 2024; 25:3014. [PMID: 38474260 DOI: 10.3390/ijms25053014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/24/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
The rat model of perinatal stress (PRS), in which exposure of pregnant dams to restraint stress reduces maternal behavior, is characterized by a metabolic profile that is reminiscent of the "metabolic syndrome". We aimed to identify plasma metabolomic signatures linked to long-term programming induced by PRS in aged male rats. This study was conducted in the plasma and frontal cortex. We also investigated the reversal effect of postpartum carbetocin (Cbt) on these signatures, along with its impact on deficits in cognitive, social, and exploratory behavior. We found that PRS induced long-lasting changes in biomarkers of secondary bile acid metabolism in the plasma and glutathione metabolism in the frontal cortex. Cbt treatment demonstrated disease-dependent effects by reversing the metabolite alterations. The metabolomic signatures of PRS were associated with long-term cognitive and emotional alterations alongside endocrinological disturbances. Our findings represent the first evidence of how early life stress may alter the metabolomic profile in aged individuals, thereby increasing vulnerability to CNS disorders. This raises the intriguing prospect that the pharmacological activation of oxytocin receptors soon after delivery through the mother may rectify these alterations.
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Affiliation(s)
- Sara Morley-Fletcher
- Unité de Glycobiologie Structurale et Fonctionnelle, GlycoStress Team, CNRS, UMR 8576, UGSF, Université de Lille, F-59000 Lille, France
| | - Alessandra Gaetano
- Unité de Glycobiologie Structurale et Fonctionnelle, GlycoStress Team, CNRS, UMR 8576, UGSF, Université de Lille, F-59000 Lille, France
| | - Vance Gao
- Unité de Glycobiologie Structurale et Fonctionnelle, GlycoStress Team, CNRS, UMR 8576, UGSF, Université de Lille, F-59000 Lille, France
| | - Eleonora Gatta
- Unité de Glycobiologie Structurale et Fonctionnelle, GlycoStress Team, CNRS, UMR 8576, UGSF, Université de Lille, F-59000 Lille, France
| | - Gilles Van Camp
- Unité de Glycobiologie Structurale et Fonctionnelle, GlycoStress Team, CNRS, UMR 8576, UGSF, Université de Lille, F-59000 Lille, France
| | - Hammou Bouwalerh
- Unité de Glycobiologie Structurale et Fonctionnelle, GlycoStress Team, CNRS, UMR 8576, UGSF, Université de Lille, F-59000 Lille, France
| | - Pierre Thomas
- INSERM (U-1172) Laboratoire Lille Neuroscience & Cognition, équipe Plasticity & Subjectivity, Plateforme CURE, Hôpital Fontan, CHU de Lille, Psychiatry Department, Université de Lille, F-59000 Lille, France
| | - Ferdinando Nicoletti
- Department of Physiology and Pharmacology "V. Erspamer", University Sapienza of Rome, 00185 Roma, Italy
- IRCCS Neuromed, 86077 Pozzilli, Italy
| | - Stefania Maccari
- Unité de Glycobiologie Structurale et Fonctionnelle, GlycoStress Team, CNRS, UMR 8576, UGSF, Université de Lille, F-59000 Lille, France
- Department of Science and Medical-Surgical Biotechnology, University Sapienza of Rome, 00185 Roma, Italy
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German N, Popov A, Ramanaviciene A. Reagentless Glucose Biosensor Based on Combination of Platinum Nanostructures and Polypyrrole Layer. Biosensors (Basel) 2024; 14:134. [PMID: 38534241 DOI: 10.3390/bios14030134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/22/2024] [Accepted: 02/29/2024] [Indexed: 03/28/2024]
Abstract
Two types of low-cost reagentless electrochemical glucose biosensors based on graphite rod (GR) electrodes were developed. The electrodes modified with electrochemically synthesized platinum nanostructures (PtNS), 1,10-phenanthroline-5,6-dione (PD), glucose oxidase (GOx) without and with a polypyrrole (Ppy) layer-(i) GR/PtNS/PD/GOx and (ii) GR/PtNS/PD/GOx/Ppy, respectively, were prepared and tested. Glucose biosensors based on GR/PtNS/PD/GOx and GR/PtNS/PD/GOx/Ppy electrodes were characterized by the sensitivity of 10.1 and 5.31 μA/(mM cm2), linear range (LR) up to 16.5 and 39.0 mM, limit of detection (LOD) of 0.198 and 0.561 mM, good reproducibility, and storage stability. The developed glucose biosensors based on GR/PtNS/PD/GOx/Ppy electrodes showed exceptional resistance to interfering compounds and proved to be highly efficient for the determination of glucose levels in blood serum.
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Affiliation(s)
- Natalija German
- Department of Immunology and Bioelectrochemistry, State Research Institute Centre for Innovative Medicine, Santariskiu 5, LT-08406 Vilnius, Lithuania
| | - Anton Popov
- Department of Immunology and Bioelectrochemistry, State Research Institute Centre for Innovative Medicine, Santariskiu 5, LT-08406 Vilnius, Lithuania
- NanoTechnas-Center of Nanotechnology and Materials Science, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 243, LT-03225 Vilnius, Lithuania
| | - Almira Ramanaviciene
- Department of Immunology and Bioelectrochemistry, State Research Institute Centre for Innovative Medicine, Santariskiu 5, LT-08406 Vilnius, Lithuania
- NanoTechnas-Center of Nanotechnology and Materials Science, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 243, LT-03225 Vilnius, Lithuania
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Jiang S, Zhang G, Miao J, Wu D, Li X, Li J, Lu J, Gun S. Transcriptome and Metabolome Analyses Provide Insight into the Glucose-Induced Adipogenesis in Porcine Adipocytes. Curr Issues Mol Biol 2024; 46:2027-2042. [PMID: 38534747 DOI: 10.3390/cimb46030131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/26/2024] [Accepted: 02/29/2024] [Indexed: 03/28/2024] Open
Abstract
Glucose is a major energy substrate for porcine adipocytes and also serves as a regulatory signal for adipogenesis and lipid metabolism. In this study, we combined transcriptome and metabolome analyses to reveal the underlying regulatory mechanisms of high glucose (HG) on adipogenesis by comparing differentially expressed genes (DEGs) and differentially accumulated metabolites (DAMs) identified in porcine adipocytes. Results showed that HG (20 mmol/L) significantly increased fat accumulation in porcine adipocytes compared to low glucose (LG, 5 mmol/L). A total of 843 DEGs and 365 DAMs were identified. Functional enrichment analyses of DEGs found that multiple pathways were related to adipogenesis, lipid metabolism, and immune-inflammatory responses. PPARγ, C/EBPα, ChREBP, and FOS were identified as the key hub genes through module 3 analysis, and PPARγ acted as a central regulator by linking genes involved in lipid metabolism and immune-inflammatory responses. Gene-metabolite networks found that PPARγ-13-HODE was the most important interaction relationship. These results revealed that PPARγ could mediate the cross-talk between adipogenesis and the immune-inflammatory response during adipocyte maturation. This work provides a comprehensive view of the regulatory mechanisms of glucose on adipogenesis in porcine adipocytes.
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Affiliation(s)
- Susu Jiang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Guohua Zhang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Jian Miao
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Dianhu Wu
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Ximei Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Jiawei Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Jianxiong Lu
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Shuangbao Gun
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
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