1
|
Li MZ, Guo T, Feng YL, Zhang SY, Bai XY, Wu X, Xu K, Yang AM. Diabetes mellitus in patients with type 1 autoimmune pancreatitis at diagnosis and after corticosteroid therapy. Hepatobiliary Pancreat Dis Int 2024; 23:393-398. [PMID: 37121837 DOI: 10.1016/j.hbpd.2023.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 04/14/2023] [Indexed: 05/02/2023]
Abstract
BACKGROUND A high prevalence of diabetes mellitus (DM) coexisting with autoimmune pancreatitis (AIP) is observed. However, evidence on the circumstances under which corticosteroid therapy (CST) for AIP improves or worsens DM is scarce. This study aimed to demonstrate and identify predictors of DM control under the influence of CST. METHODS Patients diagnosed with type 1 AIP were enrolled from a prospectively maintained cohort and were classified into three groups according to the chronology in which AIP and DM were diagnosed: pre-existing DM (pDM), concurrent DM (cDM), and non-DM (nDM). The responses of DM to CST were assessed when corticosteroid was ceased or tapered to a maintenance dose and classified as 'improvement' and 'non-improvement' (including 'no change' and 'exacerbation'). RESULTS Among 101 patients with type 1 AIP, 52 (51.5%) patients were complicated with DM at the time of AIP diagnosis, with 36 patients in the cDM group and 16 patients in the pDM group. The incidences of diffuse pancreatic swelling (72.2%) and pancreatic body/tail involvement (91.7%) were significantly higher in the cDM group than in both the pDM and nDM groups. Of the 52 patients with DM, CST was administered in 48 cases. Multivariate logistic analysis identified that elevated serum gamma-glutamyl transferase (GGT) level at AIP diagnosis [odds ratio (OR) = 0.032, 95% confidence interval (CI): 0.003-0.412, P = 0.008] and pancreatic atrophy after CST (OR = 0.027, 95% CI: 0.003-0.295, P = 0.003) were negatively associated with DM control improvement. CONCLUSIONS Patients with diffuse pancreatic swelling and pancreatic body/tail involvement in pancreatitis tended to be complicated with cDM at AIP diagnosis. CST exerted a beneficial effect on the clinical course of DM in nearly half of the AIP patients complicated with DM at diagnosis, particularly in those without elevated serum GGT levels at diagnosis and who did not experience pancreatic atrophy after CST.
Collapse
Affiliation(s)
- Mei-Zi Li
- Department of Gastroenterology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Tao Guo
- Department of Gastroenterology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Yun-Lu Feng
- Department of Gastroenterology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Sheng-Yu Zhang
- Department of Gastroenterology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xiao-Yin Bai
- Department of Gastroenterology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xi Wu
- Department of Gastroenterology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Kai Xu
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Ai-Ming Yang
- Department of Gastroenterology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China.
| |
Collapse
|
2
|
Keller N, Zádori J, Lippai B, Szöllősi D, Márton V, Wellinger K, Lada S, Szűcs M, Menyhárt A, Kempler P, Baczkó I, Várkonyi T, Lengyel C, Vágvölgyi A. Cardiovascular autonomic and peripheral sensory neuropathy in women with obesity. Front Endocrinol (Lausanne) 2024; 15:1386147. [PMID: 39081789 PMCID: PMC11286427 DOI: 10.3389/fendo.2024.1386147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 07/01/2024] [Indexed: 08/02/2024] Open
Abstract
Introduction A higher incidence of neural dysfunction in people with obesity has been described. We determined the prevalence of neuropathic lesions in obese women and evaluated their potential association with anthropometric and laboratory parameters. Patients and methods In our cross-sectional study, we enrolled female patients with obesity and without diabetes before obesity treatment. Voluntary female subjects were controls with a normal body mass index (BMI). Autonomic function was assessed by Ewing's cardiovascular reflex tests, while comprehensive peripheral neuropathic assessments were conducted utilizing the Neurometer®, Tiptherm®, Monofilament®, and Rydel-Seiffer tuning fork tests. Sudomotor function was assessed by the Neuropad®-test. Body composition was examined using the InBody 770. Results 71 patients (mean ± SD; age: 36.1 ± 8.3 years; BMI: 40.2 ± 8.5 kg/m2) and 36 controls (age: 36.4 ± 13.3 years; BMI: 21.6 ± 2.1 kg/m2) were enrolled. Patients had significantly higher systolic (patients vs. controls; 137.5 ± 16.9 vs. 114.6 ± 14.8 mmHg, p<0.001) and diastolic (83.0 ± 11.7 vs.69.8 ± 11.2 mmHg, p<0.001) blood pressure compared to controls. Among autonomic tests, only the heart rate response to Valsalva maneuver (Valsalva-ratio) revealed significant impairment in patients (1.4 ± 0.2 vs. 1.7 ± 0.4, p<0.001). Neurometer® at the median nerve revealed increased current perception threshold (CPT) values at all stimulating frequencies in patients (CPT at 2000 Hz: 204.6 ± 70.9 vs. 168.1 ± 66.9, p=0.013; 250 Hz: 84.4 ± 38.9 vs. 56.5 ± 34.8, p<0.001; CPT at 5 Hz: 58.5 ± 31.2 vs 36.9 ± 29.1, p<0.001). The Rydel-Seiffer tuning fork test has revealed a significant impairment of vibrational sensing on the lower limb in patients (right hallux: 6.8 ± 0.9 vs. 7.4 ± 0.8, p=0.030; left hallux: 6.9 ± 0.8 vs. 7.3 ± 0.9, p=0.029). The Neuropad® testing showed a significant impairment of sudomotor function in women with obesity. A negative correlation was found in patients between BMI and the 25-hydroxy-D3/D2-vitamin levels (r=-0.41, p=0.00126) and a positive correlation between the BMI and resting systolic blood pressure (r=0.26, p=0.0325). Conclusion Peripheral sensory neuronal and sudomotor function impairments were detected in female patients with obesity compared to the controls with normal BMI. Cardiovascular autonomic dysfunction was also revealed by the Valsalva-ratio in these patients, suggesting the presence of parasympathetic dysfunction. The negative correlation between BMI and the 25-hydroxy-D3/D2-vitamin highlights the potential deficiency of vitamin D in the population affected by obesity.
Collapse
Affiliation(s)
- Nóra Keller
- Central Pharmacy, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - János Zádori
- Institute of Reproductive Medicine, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - Balázs Lippai
- Department of Medicine, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Dalma Szöllősi
- Institute of Reproductive Medicine, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - Virág Márton
- Institute of Reproductive Medicine, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - Károly Wellinger
- Institute of Reproductive Medicine, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - Szilvia Lada
- Directorate of Nursing Management and Professional Education, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary
| | - Mónika Szűcs
- Department of Medical Physics and Informatics, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Adrienn Menyhárt
- Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
| | - Péter Kempler
- Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
| | - István Baczkó
- Department of Pharmacology and Pharmacotherapy, Centre of Excellence for Interdisciplinary Research, Development and Innovation, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Tamás Várkonyi
- Department of Medicine, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Csaba Lengyel
- Department of Medicine, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Anna Vágvölgyi
- Department of Medicine, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| |
Collapse
|
3
|
Li J, Farrow M, Ibrahim K, McTigue DM, Kramer J, Tong B, Jutzeler C, Jones L, Yarar-Fisher C. Racial differences in serological markers across the first year of injury in spinal cord injury: a retrospective analysis of a multi-center interventional study. Spinal Cord 2024:10.1038/s41393-024-00998-3. [PMID: 38961159 DOI: 10.1038/s41393-024-00998-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 05/17/2024] [Accepted: 05/22/2024] [Indexed: 07/05/2024]
Abstract
STUDY DESIGN Secondary analysis of a randomized, multi-center, placebo-controlled study(Sygen®). OBJECTIVES To evaluate racial differences in serological markers in individuals with spinal cord injury(SCI) across the first year of injury. SETTING Hospitals in North America. METHODS Serological markers (e.g.,cell count, liver, kidney, and pancreatic function, metabolism, and muscle damage) were assessed among 316 participants (247 White, 69 Black) at admission, weeks 1, 2, 4, 8, and 52 post-injury. Linear mixed models were employed to explore the main effects of time, race (Black vs. White), and their interaction, with adjustment of covariates such as study center, polytrauma, injury (level, completeness), treatment group, and sex. RESULTS A main effect of race was observed where White individuals had higher alanine transaminase, blood urea nitrogen(BUN), BUN/Creatinine ratio, sodium, and chloride, while Black individuals had higher calcium, total serum protein, and platelets. For markers with interaction effects, post-hoc comparisons showed that at week 52, White individuals had higher mature neutrophils, hematocrit, hemoglobin, mean corpuscular hemoglobin, albumin, and triglycerides, and Black individuals had higher amylase. Eosinophils, monocytes, red blood cells, aspartate aminotransferase, bilirubin, cholesterol, partial thromboplastin time, urine specific gravity, urine pH, CO2, and inorganic phosphorus did not differ between races. CONCLUSIONS Our results revealed racial differences in serological markers and underscores the importance of considering race as a determinant of physiological responses. Future studies are warranted to explore the causes and implications of these racial disparities to facilitate tailored clinical management and social policy changes that can improve health equity.
Collapse
Affiliation(s)
- Jia Li
- College of Medicine, Department of Physical Medicine & Rehabilitation, The Ohio State University, Columbus, OH, USA.
| | - Matthew Farrow
- College of Medicine, Department of Physical Medicine & Rehabilitation, The Ohio State University, Columbus, OH, USA
| | - Kerollos Ibrahim
- College of Medicine, Florida State University, Tallahassee, FL, USA
| | - Dana M McTigue
- College of Medicine - Department of Neuroscience, The Ohio State University, Columbus, OH, USA
| | - John Kramer
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC, Canada
| | - Bobo Tong
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC, Canada
| | - Catherine Jutzeler
- Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Linda Jones
- Department of Physical Therapy, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ceren Yarar-Fisher
- College of Medicine, Department of Physical Medicine & Rehabilitation, The Ohio State University, Columbus, OH, USA
- College of Medicine - Department of Neuroscience, The Ohio State University, Columbus, OH, USA
| |
Collapse
|
4
|
Chaudhari UK, Hansen BC. Amylase and lipase levels in the metabolic syndrome and type 2 diabetes: A longitudinal study in rhesus monkeys. Physiol Rep 2024; 12:e16097. [PMID: 38955666 PMCID: PMC11219193 DOI: 10.14814/phy2.16097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 05/22/2024] [Accepted: 05/22/2024] [Indexed: 07/04/2024] Open
Abstract
Latent associations between low serum amylase and reduced plasma insulin levels and increased adiposity have been described previously in a small study of asymptomatic middle-aged humans. In the present study, we sought to determine the nature of such changes during the longitudinal progression from metabolically normal to overt type 2 diabetes mellitus (T2DM) in nonhuman primates (NHPs), a disease that appears to be the same in both pathophysiology and underlying mechanisms as that which most commonly develops in middle-aged adult humans. Amylase and lipase levels were characterized in 157 unrelated adult rhesus monkeys (Macaca mulatta); 38% developed T2DM while under study. In all monkeys, multivariable linear regression analysis revealed that amylase could be negatively predicted by % body fat (β -0.29; p = 0.002), age (β -0.27; p = 0.005), and HbA1c (β -0.18; p = 0.037). Amylase levels were positively predicted by lipase levels (β = 0.19; p = -0.024) in all NHPs included in the study. Amylase was significantly lower in NHPs with metabolic syndrome (p < 0.001), prediabetes (PreDM) (p < 0.001), and T2DM (p < 0.001) compared to metabolically normal adult NHPs. Lipase increased in NHPs with PreDM (p = 0.005) and T2DM (p = 0.04) compared to normal NHPs. This is the first longitudinal study of any species, including humans, to show the dynamics of amylase and lipase during the metabolic progression from normal to metabolic syndrome, to PreDM and then to overt T2DM. The extraordinary similarity between humans and monkeys in T2DM, in pancreatic pathophysiology and in metabolic functions give these findings high translational value.
Collapse
Affiliation(s)
- Uddhav K. Chaudhari
- Department of Internal Medicine, Obesity Diabetes and Aging Research Center, Morsani College of MedicineUniversity of South FloridaTampaFloridaUSA
- ICMR‐National Institute for Research in Reproductive and Child Health (NIRRCH)MumbaiIndia
| | - Barbara C. Hansen
- Department of Internal Medicine, Obesity Diabetes and Aging Research Center, Morsani College of MedicineUniversity of South FloridaTampaFloridaUSA
| |
Collapse
|
5
|
Liu Y, Kimita W, Bharmal SH, Petrov MS. Response to lowering plasma glucose is characterised by decreased oxyntomodulin: Results from a randomised controlled trial. Diabetes Metab Syndr 2024; 18:103052. [PMID: 38901179 DOI: 10.1016/j.dsx.2024.103052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/13/2024] [Accepted: 06/10/2024] [Indexed: 06/22/2024]
Abstract
BACKGROUND With the prevalence of diabetes reaching an epidemic level, there is a growing interest in the investigation of its remission. Proglucagon-derived peptides (PGDP) have been shown to have a glucose-regulating effect. However, whether they play a role in diabetes remission remains poorly understood. AIM To investigate changes in plasma levels of PGDP in glycaemic responders versus non-responders. METHODS The study was a randomised placebo-controlled trial comprising 18 adults with prediabetes (registered at www. CLINICALTRIALS gov as NCT03889210). Following an overnight fast, participants consumed ketone β-hydroxybutyrate (KEβHB)-supplemented beverage and placebo beverage in crossover manner. Serial blood samples were collected from baseline to 150 min at 30-min intervals. The endpoints were changes in glucagon-like peptide-1 (GLP-1), glicentin, oxyntomodulin, glucagon, and major proglucagon fragment (MPGF). Participants were stratified into the 'responders' and 'non-responders' subgroups based on their glycaemic changes following the ingestion of KEβHB. The area under the curve (AUC) was calculated to estimate the accumulated changes in the studied PGDP and compared using paired-t test between the KEβHB and placebo beverages. RESULTS Responders had a significantly greater reduction in plasma glucose compared with non-responders following acute ketosis (p < 0.001). The AUC0-150 for oxyntomodulin was significantly lower following the KEβHB beverage compared with the placebo (p = 0.045) in responders, but not in non-responders (p = 0.512). No significant differences in AUCs0-150 were found for GLP-1, glicentin, glucagon, and MPGF in either responders or non-responders. CONCLUSION Oxyntomodulin is involved in lowering plasma glucose and may play an important role in diabetes remission.
Collapse
Affiliation(s)
- Yutong Liu
- School of Medicine, University of Auckland, Auckland, New Zealand
| | - Wandia Kimita
- School of Medicine, University of Auckland, Auckland, New Zealand
| | - Sakina H Bharmal
- School of Medicine, University of Auckland, Auckland, New Zealand
| | - Maxim S Petrov
- School of Medicine, University of Auckland, Auckland, New Zealand.
| |
Collapse
|
6
|
Zhao X, Kolbinger FR, Distler M, Weitz J, Makarov D, Bachmann M, Baraban L. Portable droplet-based real-time monitoring of pancreatic α-amylase in postoperative patients. Biosens Bioelectron 2024; 251:116034. [PMID: 38359666 DOI: 10.1016/j.bios.2024.116034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/21/2023] [Accepted: 01/11/2024] [Indexed: 02/17/2024]
Abstract
Postoperative complications after pancreatic surgery are frequent and can be life-threatening. Current clinical diagnostic strategies involve time-consuming quantification of α-amylase activity in abdominal drain fluid, which is performed on the first and third postoperative day. The lack of real-time monitoring may delay adjustment of medical treatment upon complications and worsen prognosis for patients. We report a bedside portable droplet-based millifluidic device enabling real-time sensing of drain α-amylase activity for postoperative monitoring of patients undergoing pancreatic surgery. Here, a tiny amount of drain liquid of patient samples is continuously collected and co-encapsulated with a starch reagent in nanoliter-sized droplets to track the fluorescence intensity released upon reaction with α-amylase. Comparing the α-amylase levels of 32 patients, 97 % of the results of the droplet-based millifluidic system matched the clinical data. Our method reduces the α-amylase assay duration to approximately 3 min with the limit of detection 7 nmol/s·L, enabling amylase activity monitoring at the bedside in clinical real-time. The presented droplet-based platform can be extended for analysis of different body fluids, diseases, and towards a broader range of biomarkers, including lipase, bilirubin, lactate, inflammation, or liquid biopsy markers, paving the way towards new standards in postoperative patient monitoring.
Collapse
Affiliation(s)
- Xinne Zhao
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf e. V, 01328, Dresden, Germany.
| | - Fiona R Kolbinger
- Department of Visceral, Thoracic and Vascular Surgery, University Hospital and Faculty of Medicine Carl Gustav. Carus, TUD Dresden University of Technology, Germany; Else Kröner Fresenius Center for Digital Health (EKFZ), TUD Dresden University of Technology, Germany.
| | - Marius Distler
- Department of Visceral, Thoracic and Vascular Surgery, University Hospital and Faculty of Medicine Carl Gustav. Carus, TUD Dresden University of Technology, Germany
| | - Jürgen Weitz
- Department of Visceral, Thoracic and Vascular Surgery, University Hospital and Faculty of Medicine Carl Gustav. Carus, TUD Dresden University of Technology, Germany; Else Kröner Fresenius Center for Digital Health (EKFZ), TUD Dresden University of Technology, Germany
| | - Denys Makarov
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf e. V, 01328, Dresden, Germany.
| | - Michael Bachmann
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf e. V, 01328, Dresden, Germany.
| | - Larysa Baraban
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf e. V, 01328, Dresden, Germany; Else Kröner Fresenius Center for Digital Health (EKFZ), TUD Dresden University of Technology, Germany.
| |
Collapse
|
7
|
Haddou M, Elbouzidi A, Taibi M, Baraich A, Loukili EH, Bellaouchi R, Saalaoui E, Asehraou A, Salamatullah AM, Bourhia M, Nafidi HA, Addi M, Guerrouj BE, Chaabane K. Exploring the multifaceted bioactivities of Lavandula pinnata L. essential oil: promising pharmacological activities. Front Chem 2024; 12:1383731. [PMID: 38660570 PMCID: PMC11041020 DOI: 10.3389/fchem.2024.1383731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/21/2024] [Indexed: 04/26/2024] Open
Abstract
Introduction: This study investigates the biological activities of Lavandula pinnata essential oil (LPEO), an endemic lavender species from the Canary Islands, traditionally used in treating various ailments. Methods: LPEO was extracted by hydrodistillation and analyzed using GC-MS. Antioxidant activity was assessed by DPPH radical scavenging and total antioxidant capacity assays. Antimicrobial activity was evaluated by disc diffusion, MIC, MBC, and MFC determination against bacterial (Staphylococcus aureus, Micrococcus luteus, Escherichia coli, Pseudomonas aeruginosa) and fungal (Candida glabrata, Rhodotorula glutinis, Aspergillus niger, Penicillium digitatum) strains. Antidiabetic and anti-gout potential were investigated through α-amylase, α-glucosidase, and xanthine oxidase inhibition assays. Antityrosinase activity was determined using a modified dopachrome method. Cytotoxicity was assessed by MTT assay against breast (MCF-7, MDA-MB-468), liver (HepG2), colon (HCT-15) cancer cells, and normal cells (PBMCs). Results and discussion: LPEO exhibits potent antiradical activity (IC50 = 148.33 ± 2.48 μg/mL) and significant antioxidant capacity (TAC = 171.56 ± 2.34 μg AA/mg of EO). It demonstrates notable antibacterial activity against four strains (Staphylococcus aureus, Micrococcus luteus, Escherichia coli, and Pseudomonas aeruginosa) with inhibition zones ranging from 18.70 ± 0.30 mm to 29.20 ± 0.30 mm, along with relatively low MIC and MBC values. LPEO displays significant antifungal activity against four strains (Candida glabrata, Rhodotorula glutinis, Aspergillus niger, and Penicillium digitatum) with a fungicidal effect at 1 mg/mL, surpassing the positive control (cycloheximide), and MIC and MFC values indicating a fungicidal effect. It exhibits substantial inhibition of xanthine oxidase enzyme (IC50 = 26.48 ± 0.90 μg/mL), comparable to allopurinol, and marked inhibitory effects on α-amylase (IC50 = 31.56 ± 0.46 μg/mL) and α-glucosidase (IC50 = 58.47 ± 2.35 μg/mL) enzymes.The enzyme tyrosinase is inhibited by LPEO (IC50 = 29.11 ± 0.08 mg/mL). LPEO displays moderate cytotoxic activity against breast, liver, and colon cancer cells, with low toxicity towards normal cells (PBMC). LPEO exhibits greater selectivity than cisplatin for breast (MCF-7) and colon (HCT-15) cancer cells but lower selectivity for liver (HepG2) and metastatic breast (MDA-MB-468) cancer cells. These findings suggest the potential of LPEO as an antioxidant, antimicrobial, anti-gout, antidiabetic, and anticancer agent.
Collapse
Affiliation(s)
- Mounir Haddou
- Laboratoire d’Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
- Centre de l’Oriental des Sciences et Technologies de l’Eau et de l’Environnement (COSTEE), Université Mohammed Premier, Oujda, Morocco
| | - Amine Elbouzidi
- Laboratoire d’Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
- Euro-Mediterranean University of Fes (UEMF), Fes, Morocco
| | - Mohamed Taibi
- Laboratoire d’Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
- Centre de l’Oriental des Sciences et Technologies de l’Eau et de l’Environnement (COSTEE), Université Mohammed Premier, Oujda, Morocco
| | - Abdellah Baraich
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | | | - Reda Bellaouchi
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Ennouaamane Saalaoui
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Abdeslam Asehraou
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Ahmad Mohammad Salamatullah
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Bourhia
- Laboratory of Biotechnology and Natural Resources Valorization, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Hiba-Allah Nafidi
- Department of Food Science, Faculty of Agricultural and Food Sciences, Laval University, Quebec City, QC, Canada
| | - Mohamed Addi
- Laboratoire d’Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - Bouchra El Guerrouj
- Laboratoire d’Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
- Centre de l’Oriental des Sciences et Technologies de l’Eau et de l’Environnement (COSTEE), Université Mohammed Premier, Oujda, Morocco
| | - Khalid Chaabane
- Laboratoire d’Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| |
Collapse
|
8
|
Jalal M, Gbadegesin SA, Tehami N, Nakajima K. What is the clinical significance of low serum amylase? Systematic review of the conditions associated with low serum amylase. Frontline Gastroenterol 2024; 15:154-161. [PMID: 38779473 PMCID: PMC11106763 DOI: 10.1136/flgastro-2023-102405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 07/15/2023] [Indexed: 05/25/2024] Open
Abstract
Objective Most studies have assessed the impact of elevated serum amylase levels in clinical practice, but only a few have investigated the significance of low serum amylase. We therefore, aimed to review the literature to understand the conditions associated with low serum amylase and its clinical relevance. Method This systematic review was performed in accordance with the criteria established in the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The search was conducted on Medline and Embase databases until November 2022. After identifying relevant titles, abstracts were read and data of eligible articles retrieved. The conditions associated with low serum amylase were evaluated. The quality of the studies was assessed using the Newcastle-Ottawa Score. Results Our search strategy identified 19 studies including a total of 15 097 patients for systematic review. All the studies were observational including two studies which used secretin-induced test. The main conditions associated with low serum amylase were diabetes mellitus (n=9), metabolic syndrome (n=3), chronic pancreatitis (CP) (n=3), non-alcoholic fatty liver disease (n=2) and obesity (n=1). Low serum amylase showed a high specificity (94%) with low sensitivity (38.7%-59%) in diagnosing chronic pancreatitis. Conclusion This systematic review revealed a unique insight into the relevance of low serum amylase in clinical practice. Low serum amylase can be a useful adjunct test in the assessment of patients with CP, pancreatic exocrine insufficiency, diabetes mellitus and metabolic syndrome.
Collapse
Affiliation(s)
- Mustafa Jalal
- Department of Gastroenterology, Royal Bournemouth Hospital, Bournemouth, UK
| | | | - Nadeem Tehami
- Hepatology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Kei Nakajima
- Department of Food and Nutrition, Japan Women's University, Bunkyo-ku, Japan
- Department of Endocrinology and Diabetes, Saitama Medical University, Iruma-gun, Japan
| |
Collapse
|
9
|
Ikeda I, Fujihara K, Osawa T, Takeda Y, Hatta M, Matsubayashi Y, Kodama S, Mori Y, Kadowaki T, Honda R, Arase Y, Sone H. Retrospective cohort study to examine the association between serum amylase and the incidence of type 2 diabetes mellitus, Toranomon Hospital Health Management Center Study 23 (TOPICS 23). BMJ Open Diabetes Res Care 2023; 11:e003482. [PMID: 37437950 DOI: 10.1136/bmjdrc-2023-003482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/28/2023] [Indexed: 07/14/2023] Open
Abstract
INTRODUCTION Low serum amylase values are cross-sectionally associated with the prevalence of type 2 diabetes mellitus (T2DM) but have not been shown to be longitudinally associated with its incidence. This retrospective cohort (ie, historical cohort) study aimed to examine the association of previously lowered levels of serum amylase with incident T2DM. RESEARCH DESIGN AND METHODS Examined were 8316 individuals who had annual health examinations for 6 years (ie, 7 times) at the Toranomon Hospital Health Management Center. The trajectory of serum amylase as the study exposure was classified into two elements: (1) serum amylase level at entry and (2) change in serum amylase, which was expressed as the annual change rate. The annual change rate was calculated by dividing the change in the amylase values according to follow-up periods. Regression analyses were performed to examine the association between low and decreased levels of serum amylase and the incidence of T2DM. RESULTS Analyzed were 6917 individuals who had not developed T2DM within 1 year after cohort entry. T2DM thereafter occurred in 1021 patients. Cox regression indicated that the adjusted HR (95% CI) for incident T2DM for amylase ≤57 IU/L (quintile (Q) 1) was 0.97 (0.84 to 1.13) compared with amylase ≥58 IU/L (Q2-Q5). Logistic regression indicated that the adjusted OR (95% CI) for an annual change rate of amylase ≤-2.0% (Q1) vs ≥-1.9% (Q2-Q5) was 3.53 (3.00 to 4.16). The adjusted ORs were consistently significant throughout sensitivity analyses according to baseline amylase and the combination of age, body mass index, and hemoglobin A1c. CONCLUSIONS Results showed that not low but previously decreased serum amylase was a risk factor for T2DM, suggesting the significance of periodic examinations of serum amylase values to detect individuals at high risk of T2DM.
Collapse
Affiliation(s)
- Izumi Ikeda
- Department of Hematology, Endocrinology and Metabolism, Niigata University Facility of Medicine, Niigata, Japan
| | - Kazuya Fujihara
- Department of Hematology, Endocrinology and Metabolism, Niigata University Facility of Medicine, Niigata, Japan
| | - Taeko Osawa
- Department of Hematology, Endocrinology and Metabolism, Niigata University Facility of Medicine, Niigata, Japan
| | - Yasunaga Takeda
- Department of Hematology, Endocrinology and Metabolism, Niigata University Facility of Medicine, Niigata, Japan
| | - Mariko Hatta
- Department of Hematology, Endocrinology and Metabolism, Niigata University Facility of Medicine, Niigata, Japan
| | - Yasuhiro Matsubayashi
- Department of Hematology, Endocrinology and Metabolism, Niigata University Facility of Medicine, Niigata, Japan
| | - Satoru Kodama
- Department of Hematology, Endocrinology and Metabolism, Niigata University Facility of Medicine, Niigata, Japan
| | - Yasumichi Mori
- Department of Endocrinology and Metabolism, Toranomon Hospital, Tokyo, Japan
| | | | - Ritsuko Honda
- Health Management Center, Toranomon Hospital, Tokyo, Japan
| | - Yasuji Arase
- Health Management Center, Toranomon Hospital, Tokyo, Japan
| | - Hirohito Sone
- Department of Hematology, Endocrinology and Metabolism, Niigata University Facility of Medicine, Niigata, Japan
| |
Collapse
|
10
|
Li H, Borné Y, Wang Y, Sonestedt E. Starch intake, amylase gene copy number variation, plasma proteins, and risk of cardiovascular disease and mortality. BMC Med 2023; 21:27. [PMID: 36691017 PMCID: PMC9872432 DOI: 10.1186/s12916-022-02706-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 12/12/2022] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Salivary amylase, encoded by the AMY1 gene, initiate the digestion of starch. Whether starch intake or AMY1 copy number is related to disease risk is currently rather unknown. The aim was to investigate the association between starch intake and AMY1 copy number and risk of cardiovascular disease (CVD) and mortality and whether there is an interaction. In addition, we aim to identify CVD-related plasma proteins associated with starch intake and AMY1 copy number. METHODS This prospective cohort study used data from 21,268 participants from the Malmö Diet and Cancer Study. Dietary data were collected through a modified diet history method and incident CVD and mortality were ascertained through registers. AMY1 gene copy number was determined by droplet digital polymerase chain reaction, a risk score of 10 genetic variants in AMY1 was measured, and a total of 88 selected CVD-related proteins were measured. Cox proportional hazards regression was used to analyze the associations of starch intake and AMY1 copy number with disease risk. Linear regression was used to identify plasma proteins associated with starch intake and AMY1 copy number. RESULTS Over a median of 23 years' follow-up, 4443 individuals developed CVD event and 8125 died. After adjusting for potential confounders, a U-shape association between starch intake and risk of CVD (P-nonlinearity = 0.001) and all-cause mortality (P-nonlinearity = 0.03) was observed. No significant association was found between AMY1 copy number and risk of CVD and mortality, and there were no interactions between starch intake and AMY1 copy number (P interaction > 0.23). Among the 88 plasma proteins, adrenomedullin, interleukin-1 receptor antagonist protein, fatty acid-binding protein, leptin, and C-C motif chemokine 20 were associated with starch intake after adjusting for multiple testing. CONCLUSIONS In this large prospective study among Swedish adults, a U-shaped association between starch intake and risk of CVD and all-cause mortality was found. Several plasma proteins were identified which might provide information on potential pathways for such association. AMY1 copy number was not associated with CVD risk or any of the plasma proteins, and there was no interaction between starch intake and AMY1 copy number on disease risk.
Collapse
Affiliation(s)
- Huiping Li
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China.
- Nutritional Epidemiology, Department of Clinical Sciences in Malmö, Lund University, Malmö, Sweden.
| | - Yan Borné
- Nutritional Epidemiology, Department of Clinical Sciences in Malmö, Lund University, Malmö, Sweden
| | - Yaogang Wang
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Emily Sonestedt
- Nutritional Epidemiology, Department of Clinical Sciences in Malmö, Lund University, Malmö, Sweden.
| |
Collapse
|
11
|
Corli G, Tirri M, Arfè R, Marchetti B, Bernardi T, Borsari M, Odoardi S, Mestria S, Strano-Rossi S, Neri M, Gaudio RM, Bilel S, Marti M. Pharmaco-Toxicological Effects of Atypical Synthetic Cathinone Mephtetramine (MTTA) in Mice: Possible Reasons for Its Brief Appearance over NPSs Scene. Brain Sci 2023; 13:brainsci13020161. [PMID: 36831704 PMCID: PMC9954072 DOI: 10.3390/brainsci13020161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/11/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
Over the last year, NPSs have been steadily on the rise in the illicit drug market. Among these, synthetic cathinones seem to become increasingly popular among young adults, mainly because of their ability to replicate the effects of traditional psychostimulant drugs, such as cocaine, MDMA and amphetamines. However, scarce data are available about the in vivo pharmaco-toxicology of these new substances. To this end, this study focused on evaluation of effects induced by repeated administration of mephtetramine (MTTA 0.1-30 mg/kg i.p.) in mice. This atypical cathinone highlighted a sensorial (inhibition of visual and acoustic reflexes) and transient physiological parameter (decrease in breath rate and temperature) change in mice. Regarding motor activity, both a dose-dependent increase (accelerod test) and biphasic effect (drag and mobility time test) have been shown. In addition, blood and urine samples have been analysed to enrich the experimental featuring of the present study with reference to evaluation of potential toxicity related to consumption of MTTA. The latter analysis has particularly revealed important changes in blood cells count and blood and urine physicochemical profile after repeated treatment with this atypical cathinone. Moreover, MTTA induced histological changes in heart, kidney and liver samples, emphasizing its potential toxicity.
Collapse
Affiliation(s)
- Giorgia Corli
- Department of Translational Medicine, Section of Legal Medicine, LTTA Center and University Center of Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Micaela Tirri
- Department of Translational Medicine, Section of Legal Medicine, LTTA Center and University Center of Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Raffaella Arfè
- Department of Translational Medicine, Section of Legal Medicine, LTTA Center and University Center of Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Beatrice Marchetti
- Department of Translational Medicine, Section of Legal Medicine, LTTA Center and University Center of Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Tatiana Bernardi
- Department of Environmental Sciences and Prevention, University of Ferrara, 44121 Ferrara, Italy
| | - Martina Borsari
- Department of Translational Medicine, Section of Legal Medicine, LTTA Center and University Center of Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Sara Odoardi
- Forensic Toxicology Laboratory, Department of Health Surveillance and Bioethics, Università Cattolica del Sacro Cuore F. Policlinico Gemelli IRCCS, 00169 Rome, Italy
| | - Serena Mestria
- Forensic Toxicology Laboratory, Department of Health Surveillance and Bioethics, Università Cattolica del Sacro Cuore F. Policlinico Gemelli IRCCS, 00169 Rome, Italy
| | - Sabina Strano-Rossi
- Forensic Toxicology Laboratory, Department of Health Surveillance and Bioethics, Università Cattolica del Sacro Cuore F. Policlinico Gemelli IRCCS, 00169 Rome, Italy
| | - Margherita Neri
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Rosa Maria Gaudio
- Department of Translational Medicine, Section of Legal Medicine, LTTA Center and University Center of Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
- University Center for Studies on Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Sabrine Bilel
- Department of Translational Medicine, Section of Legal Medicine, LTTA Center and University Center of Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Matteo Marti
- Department of Translational Medicine, Section of Legal Medicine, LTTA Center and University Center of Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
- University Center for Studies on Gender Medicine, University of Ferrara, 44121 Ferrara, Italy
- Collaborative Center for the Italian National Early Warning System, Department of Anti-Drug Policies, Presidency of the Council of Ministers, 00186 Rome, Italy
- Correspondence:
| |
Collapse
|
12
|
Nayema Z, Sato T, Kannon T, Tsujiguchi H, Hosomichi K, Nakamura H, Tajima A. Genetic factors associated with serum amylase in a Japanese population: combined analysis of copy-number and single-nucleotide variants. J Hum Genet 2023; 68:313-319. [PMID: 36599956 PMCID: PMC10125868 DOI: 10.1038/s10038-022-01111-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/02/2022] [Accepted: 12/19/2022] [Indexed: 01/06/2023]
Abstract
Amylase activity and levels in humans are heritable quantitative traits. Although many studies exist on the effects of copy-number variants (CNVs) in amylase genes (AMY) on human phenotypes, such as body mass index (BMI), the genetic factors controlling interindividual variation in amylase levels remain poorly understood. Here, we conducted a genome-wide association study (GWAS) of serum amylase levels (SAL) in 814 Japanese individuals to identify associated single-nucleotide variants (SNVs), after adjusting for non-genetic factors. Diploid copy numbers (CN) of AMY (AMY1, AMY2A, and AMY2B) were measured using droplet digital PCR to examine the association between each diploid CN and SAL. We further assessed the relative contribution of the GWAS-lead SNV and AMY CNVs to SAL. GWAS identified 14 significant SNVs (p < 5 × 10-8) within a linkage disequilibrium block near the AMY cluster on chromosome 1. The association analyses of AMY CNVs and SAL showed a significant association between AMY1 diploid CN and SAL (p = 1.89 × 10-19), while no significant association with SAL was found for AMY2A CN (p = 0.54) or AMY2B CN (p = 0.15). In a joint association analysis with SAL using the GWAS-lead SNV and AMY1 diploid CN, AMY1 CN remained significant (p = 5.4 ×10-13), while the association of the lead SNV was marginal (p = 0.08). We also found no association between AMY1 diploid CN and BMI (p = 0.14). Our results indicate that AMY1 CNV is the major genetic factor for Japanese SAL, with no significant association with BMI.
Collapse
Affiliation(s)
- Zannatun Nayema
- Department of Bioinformatics and Genomics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Takehiro Sato
- Department of Bioinformatics and Genomics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Takayuki Kannon
- Department of Bioinformatics and Genomics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan.,Department of Biomedical Data Science, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiromasa Tsujiguchi
- Department of Hygiene and Public Health, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Kazuyoshi Hosomichi
- Department of Bioinformatics and Genomics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan.,Laboratory of Computational Genomics, School of Life Science, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Hiroyuki Nakamura
- Department of Hygiene and Public Health, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Atsushi Tajima
- Department of Bioinformatics and Genomics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan.
| |
Collapse
|
13
|
Lv Y, Liu R, Jia H, Sun X, Gong Y, Ma L, Qiu W, Wang X. Alterations of the gut microbiota in type 2 diabetics with or without subclinical hypothyroidism. PeerJ 2023; 11:e15193. [PMID: 37073275 PMCID: PMC10106085 DOI: 10.7717/peerj.15193] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 03/15/2023] [Indexed: 04/20/2023] Open
Abstract
Background Diabetes and thyroid dysfunction are two closely related endocrine diseases. Increasing evidences show that gut microbiota plays an important role in both glucose metabolism and thyroid homeostasis. Meanwhile, copy number variation (CNV) of host salivary α-amylase gene (AMY1) has been shown to correlate with glucose homeostasis. Hence, we aim to characterize the gut microbiota and CNV of AMY1 in type 2 diabetes (T2D) patients with or without subclinical hypothyroidism (SCH). Methods High-throughput sequencing was used to analyze the gut microbiota of euthyroid T2D patients, T2D patients with SCH and healthy controls. Highly sensitive droplet digital PCR was used to measure AMY1 CN. Results Our results revealed that T2D patients have lower gut microbial diversity, no matter with or without SCH. The characteristic taxa of T2D patients were Coriobacteriales, Coriobacteriaceae, Peptostreptococcaceae, Pseudomonadaceae, Collinsella, Pseudomonas and Romboutsia. Meanwhile, Escherichia/Shigella, Lactobacillus_Oris, Parabacteroides Distasonis_ATCC_8503, Acetanaerobacterium, Lactonifactor, uncultured bacterium of Acetanaerobacterium were enriched in T2D patients with SCH. Moreover, serum levels of free triiodothyronine (FT3) and free thyroxine (FT4) in T2D patients were both negatively correlated with richness of gut microbiota. A number of specific taxa were also associated with clinical parameters at the phylum and genus level. In contrast, no correlation was found between AMY1 CN and T2D or T2D_SCH. Conclusion This study identified characteristic bacterial taxa in gut microbiota of T2D patients with or without SCH, as well as the taxa associated with clinical indices in T2D patients. These results might be exploited in the prevention, diagnosis and treatment of endocrine disorders in the future.
Collapse
Affiliation(s)
- Yanrong Lv
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Rong Liu
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Huaijie Jia
- State Key Laboratory of Veterinary of Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaolan Sun
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Yuhan Gong
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Li Ma
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Wei Qiu
- Department of Endocrinology, Xinxiang First People’s Hospital, The Affiliated People’s Hospital of Xinxiang Medical University, Xinxiang, China
| | - Xiaoxia Wang
- School of Public Health, Lanzhou University, Lanzhou, China
| |
Collapse
|
14
|
Azhagesan A, Chandrasekaran N, Mukherjee A. Multispectroscopy analysis of polystyrene nanoplastic interaction with diastase α-amylase. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 247:114226. [PMID: 36306622 DOI: 10.1016/j.ecoenv.2022.114226] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 10/15/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
The digestive enzyme of plant are generally α-amylase. They functions enzyme that breakdown starch into maltose and sugars. This happens in the endosperm of the seed. Due to pollutants, this process get happened one of emergent xenobiotics are micro and nano plastics. This study involves the interaction 100 nm size of polystyrene nano plastic (PSNPs) on α-amylase. The hyperchromism of α-amylase - PSNPs conjugate's revealed that ground-state complex in a microenvironment. Fluorescence quenching happened when the concentration of PSNPs was increased. The Stern Volmer plot revealed binding constant (Ka) was 1.904 × 1019 M-1. S-1 while the quenching constant (Kq) was 1.036 × 1011 M-1, the blue shift of the peak showed static quenching. The binding constant was KA = 4.2 × 1012, the number of binding site on PSNPs for α-amylase was n = 1.12. The synchronous result showed a gradual reduction in the intensity of Trp residues because when the α-amylase interacts with PSNPs short-range π-π interaction happens around the Trp163 residues. The enzyme activity of α-amylase by 44 % and its IC50 value was found to be 100 µg/mL. The enzyme kinetics (Vmax) analysis showed the type of inhibition with and without PSNPs Vmax 769 and Vmax 303 µg/mL/min, uncompetitive inhibition respectively. The effect of PSNPs on the enzymatic activity of α-amylase showed structural alterations of the protein. Therefore the in vitro and in silico studies were shown evidence of interaction between α-amylase and PSNPs leads to conformational structural changes in α-amylase.
Collapse
Affiliation(s)
- Ananthaselvam Azhagesan
- Centre for Nanobiotechnology, Vellore Institute of Technology (VIT), Vellore 632 014, Tamil Nadu, India
| | - Natarajan Chandrasekaran
- Centre for Nanobiotechnology, Vellore Institute of Technology (VIT), Vellore 632 014, Tamil Nadu, India.
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology (VIT), Vellore 632 014, Tamil Nadu, India
| |
Collapse
|
15
|
Thummasorn S, Apichai S, Chupradit S, Sirisattayawong P, Chaiwong P, Sriwichaiin S, Pratchayasakul W, Chattipakorn N, Chattipakorn SC. T2DM patients with depression have higher levels of hyperglycemia and cognitive decline than T2DM patients. PLoS One 2022; 17:e0273327. [PMID: 35984808 PMCID: PMC9390925 DOI: 10.1371/journal.pone.0273327] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 08/05/2022] [Indexed: 11/19/2022] Open
Abstract
The cognitive impairment, depression, a decrease in the ability to perform activities of daily living (ADLs), and salivary gland dysfunction, as indicated by the reduction of alpha-amylase activity, have been reported in patients with type 2 diabetes (T2DM). However, the effects of depression on cognitive function, salivary alpha-amylase activity, and ADLs in T2DM patients have never been investigated. In this study, 115 participants were divided into three groups, including 30 healthy people, 50 T2DM patients without depression, and 35 T2DM patients with depression. Then, the cognitive function, the level of depression, salivary-alpha amylase activity, ADLs, and metabolic parameters were determined. Results showed that T2DM patients had hyperglycemia and cognitive impairment. A decrease in the salivary alpha-amylase activity was observed in T2DM patients. Interestingly, T2DM patients with depression had higher level of hyperglycemia and cognitive impairment than T2DM patients. Additionally, cognitive function was associated with the salivary-alpha amylase activity in T2DM without depression, while the severity of depression was associated with the salivary-alpha amylase activity in T2DM patients with depression. Therefore, we concluded that T2DM caused the impairment of metabolism, decreased salivary alpha-amylase activity, and cognitive impairment. Furthermore, T2DM patients with depression had higher level of hyperglycemia and cognitive decline than T2DM patients.
Collapse
Affiliation(s)
- Savitree Thummasorn
- Department of Occupational Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Sopida Apichai
- Department of Occupational Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Supat Chupradit
- Department of Occupational Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Pornpen Sirisattayawong
- Department of Occupational Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Pachpilai Chaiwong
- Department of Occupational Therapy, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Sirawit Sriwichaiin
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Wasana Pratchayasakul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C. Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
- * E-mail: ,
| |
Collapse
|
16
|
Alpha-Amylase Inhibits Cell Proliferation and Glucose Uptake in Human Neuroblastoma Cell Lines. BIOMED RESEARCH INTERNATIONAL 2022; 2022:4271358. [PMID: 35924266 PMCID: PMC9343180 DOI: 10.1155/2022/4271358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 06/17/2022] [Accepted: 07/11/2022] [Indexed: 11/17/2022]
Abstract
The present article describes a study of the effects of alpha-amylase (α-amylase) on the human neuroblastoma (NB) cell lines SH-SY5Y, IMR-32, and LA-N-1. NB is the most common malignancy diagnosed in infants younger than 12 months. Some clinical observations revealed an inverse association between the risk of NB development and breastfeeding. α-Amylase which is present in breast milk was shown to have anticancer properties already in the beginning of the 20th century. Data presented here show that pancreatic α-amylase inhibits cell proliferation and has a direct impact on glucose uptake in the human NB cell lines. Our results point out the importance of further research which could elucidate the α-amylase mode of action and justify the presence of this enzyme in breast milk as a possible inhibitor of NB development. α-Amylase can be thus recognized as a potential safe and natural mild/host anticancer agent minimizing chemotherapy-related toxicity in the treatment of NB.
Collapse
|
17
|
Visceral Adipose Tissue Influence on Health Problem Development and Its Relationship with Serum Biochemical Parameters in Middle-Aged and Older Adults: A Literature Review. J Aging Res 2022; 2022:8350527. [PMID: 35492380 PMCID: PMC9042620 DOI: 10.1155/2022/8350527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/28/2021] [Accepted: 03/29/2022] [Indexed: 11/24/2022] Open
Abstract
Background The amount of visceral adipose tissue (VAT) tends to increase with age and is associated with several health problems, such as cardiometabolic diseases, increased infections, and overall mortality. Objectives This review provides a general assessment of how visceral adiposity correlates with the development of health problems and changes in serum biochemical parameters in middle-aged and older adults. Methods We searched specific terms in the Virtual Health Library (VHL) databases for VAT articles published in the English language between 2009 and 2019 related to older adults. Results The search found twenty-three publications in this period, of which nine were excluded. The publications had a population aged between 42 and 83 years and correlated the VAT area ratio with several comorbidities (such as pancreatitis, depression, cancer, and coronary heart disease) and serum biochemical parameters. Conclusion Further research on the association between visceral obesity and the emergence of health problems and the relationship between VAT and changes in serum biochemical parameters in older individuals should deepen the understanding of this connection and develop preventive actions.
Collapse
|
18
|
Sasaki Y, Abe Y, Nishise S, Yagi M, Mizumoto N, Kon T, Onozato Y, Sakai T, Umehara M, Ito M, Ueno Y. Low serum pancreatic amylase levels as a novel latent risk factor for colorectal adenoma in non-alcohol drinkers. J Gastroenterol Hepatol 2022; 37:660-668. [PMID: 34859497 DOI: 10.1111/jgh.15748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 11/03/2021] [Accepted: 11/25/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND AIM Obesity, insulin resistance, and metabolic alterations increase the risk of colorectal cancer and adenoma (CRA). Non-alcoholic fatty liver disease (NAFLD) or pancreatic disease (NAFPD) shares many risk factors with CRA that may have significant roles in its development; however, the relationship between CRA and NAFLD/NAFPD remains unclear. METHODS This cross-sectional study recruited 712 eligible participants without current drinking who had undergone total colonoscopy as part of a health checkup. These participants were classified into a CRA group (n = 236) and a control group (n = 439), which consisted of individuals without CRA and a history of polyp resection. NAFLD and NAFPD were diagnosed based on abdominal ultrasonography findings. RESULTS Non-alcoholic fatty liver disease was observed more frequently in individuals with CRA than in the control group (55.9% vs 41.6%, P < 0.01). There was no significant association between NAFPD and CRA; however, serum pancreatic amylase (P-amylase) levels were significantly lower in individuals with CRA. Although NAFLD was one of the factors increasing the presence of CRA (odds ratio [OR], 1.50; 95% confidence interval [CI], 1.07-2.10), low P-amylase levels were significantly associated with the presence of CRA (OR, 1.73; 95% CI, 1.04-2.88) independent of age, sex, current smoking, obesity, metabolic alterations including insulin resistance, and NAFLD. CONCLUSIONS Low serum P-amylase levels were a possible independent risk factor for CRA in the present study. The latent pancreatic exocrine-endocrine-gut relationship was considered a novel pathway involved in obesity-related CRA development, in non-alcoholic individuals.
Collapse
Affiliation(s)
- Yu Sasaki
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yasuhiko Abe
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan.,Division of Endoscopy, Yamagata University Hospital, Yamagata, Japan
| | | | - Makoto Yagi
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan.,Division of Endoscopy, Yamagata University Hospital, Yamagata, Japan
| | - Naoko Mizumoto
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Takashi Kon
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yusuke Onozato
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Takayuki Sakai
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Matsuki Umehara
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Minami Ito
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yoshiyuki Ueno
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| |
Collapse
|
19
|
Janceva S, Andersone A, Lauberte L, Bikovens O, Nikolajeva V, Jashina L, Zaharova N, Telysheva G, Senkovs M, Rieksts G, Ramata-Stunda A, Krasilnikova J. Sea Buckthorn ( Hippophae rhamnoides) Waste Biomass after Harvesting as a Source of Valuable Biologically Active Compounds with Nutraceutical and Antibacterial Potential. PLANTS (BASEL, SWITZERLAND) 2022; 11:642. [PMID: 35270111 PMCID: PMC8912587 DOI: 10.3390/plants11050642] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/19/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
For sustainable sea buckthorn (Hippophae rhamnoides) berry production, the task at hand is to find an application for the large amount of biomass waste arising at harvesting. Sea buckthorn (SBT) vegetation is currently poorly studied. The purpose of this research was to assess the composition and potential of SBT twigs as a source of valuable biologically active substances. Water and 50% EtOH extracts of twigs of three Latvian SBT cultivars with a high berry yield and quality, popular for cultivation in many countries (H. rhamnoides 'Maria Bruvele', 'Tatiana', 'Botanicheskaya Lubitelskaya'), were investigated for the first time. The phytochemical composition (UHPLC-ESI-MS/MS analysis) and biological activity of the obtained hydrophilic extracts were determined. The highest yield of polyphenolic compounds and serotonin was observed for 'Maria Bruvele'. Hydrophilic extracts were investigated for radical scavenging activity (DPPH˙ test), antibacterial/antifungal activity against five pathogenic bacteria/yeast, cytotoxicity, and the enzymatic activity of alpha-amylase (via in vitro testing), which is extremely important for the treatment of people with underweight, wasting, and malabsorption. The results showed a high potential of sea buckthorn biomass as a source of valuable biologically active compounds for the creation of preparations for the food industry, nutraceuticals, and cosmetics.
Collapse
Affiliation(s)
- Sarmite Janceva
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (S.J.); (L.L.); (O.B.); (L.J.); (N.Z.); (G.R.)
| | - Anna Andersone
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (S.J.); (L.L.); (O.B.); (L.J.); (N.Z.); (G.R.)
- Ekokompozit Ltd., Dzerbenes Street 27, LV-1006 Riga, Latvia
| | - Liga Lauberte
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (S.J.); (L.L.); (O.B.); (L.J.); (N.Z.); (G.R.)
- Ekokompozit Ltd., Dzerbenes Street 27, LV-1006 Riga, Latvia
| | - Oskars Bikovens
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (S.J.); (L.L.); (O.B.); (L.J.); (N.Z.); (G.R.)
| | - Vizma Nikolajeva
- Faculty of Biology, University of Latvia, Jelgavas Street 1, LV-1004 Riga, Latvia; (V.N.); (M.S.); (A.R.-S.)
| | - Lilija Jashina
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (S.J.); (L.L.); (O.B.); (L.J.); (N.Z.); (G.R.)
- Ekokompozit Ltd., Dzerbenes Street 27, LV-1006 Riga, Latvia
| | - Natalija Zaharova
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (S.J.); (L.L.); (O.B.); (L.J.); (N.Z.); (G.R.)
- Ekokompozit Ltd., Dzerbenes Street 27, LV-1006 Riga, Latvia
| | - Galina Telysheva
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (S.J.); (L.L.); (O.B.); (L.J.); (N.Z.); (G.R.)
| | - Maris Senkovs
- Faculty of Biology, University of Latvia, Jelgavas Street 1, LV-1004 Riga, Latvia; (V.N.); (M.S.); (A.R.-S.)
| | - Gints Rieksts
- Laboratory of Lignin Chemistry, Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia; (S.J.); (L.L.); (O.B.); (L.J.); (N.Z.); (G.R.)
| | - Anna Ramata-Stunda
- Faculty of Biology, University of Latvia, Jelgavas Street 1, LV-1004 Riga, Latvia; (V.N.); (M.S.); (A.R.-S.)
| | - Jelena Krasilnikova
- Department of Biochemistry, Riga Stradiņš University, Dzirciema Street 16, LV-1007 Riga, Latvia;
| |
Collapse
|
20
|
Butterworth PJ, Bajka BH, Edwards CH, Warren FJ, Ellis PR. Enzyme kinetic approach for mechanistic insight and predictions of in vivo starch digestibility and the glycaemic index of foods. Trends Food Sci Technol 2022; 120:254-264. [PMID: 35210697 PMCID: PMC8850932 DOI: 10.1016/j.tifs.2021.11.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/09/2021] [Accepted: 11/14/2021] [Indexed: 12/18/2022]
Abstract
Background Starch is a principal dietary source of digestible carbohydrate and energy. Glycaemic and insulinaemic responses to foods containing starch vary considerably and glucose responses to starchy foods are often described by the glycaemic index (GI) and/or glycaemic load (GL). Low GI/GL foods are beneficial in the management of cardiometabolic disorders (e.g., type 2 diabetes, cardiovascular disease). Differences in rates and extents of digestion of starch-containing foods will affect postprandial glycaemia. Scope and approach Amylolysis kinetics are influenced by structural properties of the food matrix and of starch itself. Native (raw) semi-crystalline starch is digested slowly but hydrothermal processing (cooking) gelatinises the starch and greatly increases its digestibility. In plants, starch granules are contained within cells and intact cell walls can limit accessibility of water and digestive enzymes hindering gelatinisation and digestibility. In vitro studies of starch digestion by α-amylase model early stages in digestion and can suggest likely rates of digestion in vivo and expected glycaemic responses. Reports that metabolic responses to dietary starch are influenced by α-amylase gene copy number, heightens interest in amylolysis. Key findings and conclusions This review shows how enzyme kinetic strategies can provide explanations for differences in digestion rate of different starchy foods. Michaelis-Menten and Log of Slope analyses provide kinetic parameters (e.g., Km and kcat/Km) for evaluating catalytic efficiency and ease of digestibility of starch by α-amylase. Suitable kinetic methods maximise the information that can be obtained from in vitro work for predictions of starch digestion and glycaemic responses in vivo. Michaelis-Menten kinetics determines catalytic efficiency of amylase action on starch. Kinetic parameters Km and kcat/Km are useful for estimating ease of digestibility. Log of slope analysis can quantify starch fractions digested at different rates. Categorisation of Resistant Starch can be based on types of interaction with amylase. Enzyme kinetic studies of amylolysis are useful for predicting postprandial glycaemia.
Collapse
Affiliation(s)
- Peter J. Butterworth
- Biopolymers Group, Departments of Biochemistry and Nutritional Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
| | - Balázs H. Bajka
- Biopolymers Group, Departments of Biochemistry and Nutritional Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
| | - Cathrina H. Edwards
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich Research Park, Norwich, NR4 7UQ, UK
| | - Frederick J. Warren
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich Research Park, Norwich, NR4 7UQ, UK
| | - Peter R. Ellis
- Biopolymers Group, Departments of Biochemistry and Nutritional Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
- Corresponding author. Biopolymers Group, Departments of Biochemistry and Nutritional Sciences, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
| |
Collapse
|
21
|
Thompson JA, Krajnak K, Johnston RA, Kashon ML, McKinney W, Fedan JS. High-fat western diet-consumption alters crystalline silica-induced serum adipokines, inflammatory cytokines and arterial blood flow in the F344 rat. Toxicol Rep 2022; 9:12-21. [PMID: 34976743 PMCID: PMC8683385 DOI: 10.1016/j.toxrep.2021.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/01/2021] [Accepted: 12/04/2021] [Indexed: 02/06/2023] Open
Abstract
Silica reduced serum leptin and adiponectin, no effects on body or fat pad weight. HFWD-consumption altered pro-inflammatory cytokines in silica-exposed animals. Silica altered pulse frequency; HFWD increased mean blood flow; effects additive. HFWD affected silica-induced metabolic effects.
Adipose tissue (AT) plays a central role in the maintenance of whole-body energy homeostasis through release of adipokines. High-fat Western diet (HFWD)-consumption contributes to obesity, disruption of adipocyte metabolism, chronic systemic inflammation, and metabolic dysfunction (MetDys). MetDys is associated with impaired lung function, pulmonary hypertension, and asthma. Thirty-five percent of adults in the U.S. have MetDys, yet the impact of MetDys on susceptibility to occupational hazards is unknown. The aim of this study was to determine the potential of HFWD-consumption to alter inhaled crystalline silica dust-induced metabolic responses. Six-wk old male F344 rats were fed a HFWD (45 kcal % fat, sucrose 22.2 % by weight) or standard rat chow (STD, controls), and exposed to silica-inhalation (6 h/d, 5 d/wk, 39 d; Min-U-Sil 5®, 15 mg/m3) or filtered air. Indices of MetDys and systemic inflammation were measured at 0, 4, and 8 wk following cessation of silica exposure. At 8 wk post-exposure, silica reduced serum leptin and adiponectin levels, and increased arterial pulse frequency. HFWD-consumption induced weight gain, altered adipokines, liver, kidney, and pancreatic function, and increased tail artery blood flow. At 8 wk in HFWD + SIL-treated animals, the levels of serum pro-inflammatory cytokines (IFN-γ, CXCL-1, TNF-α, IL-1β, IL-4, IL-5, IL-6, IL-10 and IL-13) were increased compared to STD + SIL but were less than HFWD + AIR-induced levels. In conclusion, consumption of a HFWD altered silica-induced metabolic responses and silica exposure disrupted AT endocrine function. These findings demonstrate previously unknown interactions between HFWD-consumption and occupational silica exposure.
Collapse
Affiliation(s)
- Janet A Thompson
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States
| | - Kristine Krajnak
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States
| | - Richard A Johnston
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States
| | - Michael L Kashon
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States
| | - Walter McKinney
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States
| | - Jeffrey S Fedan
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, United States
| |
Collapse
|
22
|
Biomarkers in metabolic syndrome. Adv Clin Chem 2022; 111:101-156. [DOI: 10.1016/bs.acc.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
23
|
Zhan F, Chen J, Yan H, Wang S, Zhao M, Zhang S, Lan X, Maekawa M. Association of Serum Amylase Activity and the Copy Number Variation of AMY1/2A/2B with Metabolic Syndrome in Chinese Adults. Diabetes Metab Syndr Obes 2021; 14:4705-4714. [PMID: 34880639 PMCID: PMC8648087 DOI: 10.2147/dmso.s339604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 11/16/2021] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Low serum amylase activity and copy number (CN) variation (CNV) of the salivary amylase gene (AMY1) are reportedly associated with obesity and abnormal glucose metabolism; however, this association remains controversial. We aimed to clarify the relationship between serum amylase activity and the CNV of AMY1/2A/2B with the occurrence of metabolic syndrome (MetS) in Chinese adults. PATIENTS AND METHODS Anthropometry, metabolic risk factors, and serum amylase activity were assessed in 560 subjects (260 MetS patients; 300 healthy controls). AMY1/2A/2B CNs were evaluated using the highly sensitive droplet digital PCR. RESULTS The serum total, pancreatic, and salivary amylase activity, but not the AMY1/2A/2B CNs, was significantly lower in MetS patients than that in the control subjects. Patients <45 y had a lower AMY1 CN, compared to that in healthy controls. Low serum amylase activity was significantly associated with high MetS prevalence (p < 0.001). In the receiver operating characteristic curve analysis, serum amylase activity was a significant diagnostic indicator for MetS. The diagnostic value of total amylase was second only to that of γ-glutamyl transpeptidase; it was higher than that of alanine aminotransferase and uric acid. CONCLUSION Low serum amylase activity was significantly associated with increased risk of MetS in Chinese adults. Therefore, amylase could be a potential biomarker for predicting MetS.
Collapse
Affiliation(s)
- Fangjie Zhan
- Department of Clinical Laboratory Medicine, The 900th Hospital of Joint Logistics Support Force, Fuzhou, People’s Republic of China
| | - Jin Chen
- Department of Clinical Laboratory Medicine, The 900th Hospital of Joint Logistics Support Force, Fuzhou, People’s Republic of China
| | - Huihui Yan
- Department of Clinical Laboratory Medicine, The 900th Hospital of Joint Logistics Support Force, Fuzhou, People’s Republic of China
| | - Shuiliang Wang
- Department of Clinical Laboratory Medicine, The 900th Hospital of Joint Logistics Support Force, Fuzhou, People’s Republic of China
| | - Meng Zhao
- Department of Clinical Laboratory Medicine, The 900th Hospital of Joint Logistics Support Force, Fuzhou, People’s Republic of China
| | - Shenghang Zhang
- Department of Clinical Laboratory Medicine, The 900th Hospital of Joint Logistics Support Force, Fuzhou, People’s Republic of China
| | - Xiaopeng Lan
- Department of Clinical Laboratory Medicine, The 900th Hospital of Joint Logistics Support Force, Fuzhou, People’s Republic of China
- Correspondence: Xiaopeng Lan Department of Clinical Laboratory Medicine, The 900th Hospital of Joint Logistics Support Force, 156th, Xierhuan Road, Fuzhou, 350025, People’s Republic of ChinaTel +86 591 22859482 Email
| | - Masato Maekawa
- Department of Laboratory Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
- Masato Maekawa Department of Laboratory Medicine, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu, 431-3192, JapanTel +81-53-435-2721Fax +81-53-435-2096 Email
| |
Collapse
|
24
|
Madjda B, Khedidja B, Samira N, Mohamed Y. In Silico and In Vitro Studies of the Inhibitory Effect of Antihistamine Drug Cyproheptadine Hydrochloride on Human Salivary Alpha Amylase. Antiinflamm Antiallergy Agents Med Chem 2020; 20:233-238. [PMID: 33100209 DOI: 10.2174/1871523019666201023111825] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/04/2020] [Accepted: 09/20/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND For the first time, the inhibitory effects on the human salivary alpha-amylase activity of the anti-inflammatory drugs indomethacin, diclofenac sodium, ketoprofen, diclofenac potassium, diclofenac, triamcinolone acetonide, and the antihistamine drugs levocetirizine dihydrochloride, desloratadine, cycloheptadine hydrochloride, have been investigated to confirm the other properties of these drugs. OBJECTIVE This study aimed to determine the effect of nine known drugs on human salivary α-amylase in vitro and the nature of interactions with structure-activity relationship using molecular docking experiments. METHODS The inhibition of human salivary alpha amylase by the six anti-inflammatory and three antihistamine drugs has been carried out using the new method that has been proved in our previous work. Molecular docking has been achieved for the first time for these drugs using the Auto- Dock Vina program. RESULTS Cyproheptadine hydrochloride presented the highest inhibitory activity against α-amylase with IC50=0.7 mg/ml, while the other drugs showed weak activities (IC50 > 2 mg/ml). CONCLUSION We conclude that Cyproheptadine hydrochloride, which was studied by docking experiments, exhibited the best inhibitory activity on salivary α-amylase in vitro & in silico.
Collapse
Affiliation(s)
- Benguechoua Madjda
- Fundamental Science Laboratory, Faculty of Sciences, Amar Telidji University, Laghouat, Algeria
| | - Benarous Khedidja
- Fundamental Science Laboratory, Faculty of Sciences, Amar Telidji University, Laghouat, Algeria
| | - Nia Samira
- Fundamental Science Laboratory, Faculty of Sciences, Amar Telidji University, Laghouat, Algeria
| | - Yousfi Mohamed
- Fundamental Science Laboratory, Faculty of Sciences, Amar Telidji University, Laghouat, Algeria
| |
Collapse
|
25
|
Grammatikopoulou MG, Gkiouras K, Markaki AG, Gkouskou KK, Aivaliotis M, Stylianou K, Bogdanos DP. AMY1 diploid copy number among end-stage renal disease patients. Hormones (Athens) 2020; 19:369-376. [PMID: 32405930 DOI: 10.1007/s42000-020-00199-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 04/07/2020] [Indexed: 12/13/2022]
Abstract
PURPOSE The salivary amylase gene (AMY1) copy number variation (CNV) is increased as a human adaptation to starch-enriched nutritional patterns. The purpose of this study was to evaluate the relationship between AMY1 CNV, dietary starch consumption, and anthropometric indices among a known population with elevated cardiovascular risk, being end-stage renal disease (ESRD) patients. METHODS A total of 43 ESRD patients were recruited based on the following inclusion criteria: being (1) adults, (2) on hemodialysis for more than 3 months, (3) able to communicate effectively, and (4) willing to participate. Anthropometric measurements were performed, dietary intake was recorded via food-frequency questionnaires, and AMY1 CNV was quantified in blood samples DNA via real-time PCR. RESULTS Median AMY1 CNV was 4.0 (2.0-17.0). A total of 21 patients had an even, and 22 had an odd AMY1 copy number (CN). Independent samples t tests revealed that AMY1-odd diploid CN is associated with increased body weight, waist and hip circumferences, and fat mass compared to the respective even diploid CN carrier group. No differences were observed for BMI or nutritional intake. Multiple regression analysis revealed that AMY1-odd diploid CN was positively associated with increased hip circumference (ß = 7.87, 95% CI = 0.34 to 15.39) and absolute fat mass (ß = 6.66, 95% CI = 0.98 to 12.34); however, after applying the Bonferroni correction for multiplicity, all regression analyses lost their significance. CONCLUSIONS AMY1-odd diploid CN appears to be associated with selected adiposity variables among hemodialysis patients. However, more research is needed to verify this finding in this population with known increased cardiovascular risk.
Collapse
Affiliation(s)
- Maria G Grammatikopoulou
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece.
| | - Konstantinos Gkiouras
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Anastasia G Markaki
- Department of Nutrition & Dietetics, Faculty of Health Sciences, Hellenic Mediterranean University, Sitia, Greece
| | - Kalliopi K Gkouskou
- Department of Medical Laboratories, Faculty of Health and Caring Professions, University of West Attica, Athens, Greece
- Embiodiagnostics, Biology Research Company, Melissinon and Damvergidon Str, Heraklion, Crete, Greece
| | - Michalis Aivaliotis
- Laboratory of Biological Chemistry, Department of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Institute of Molecular Biology and Biotechnology, Foundation of Research and Technology Hellas (FORTH), Heraklion, Crete, Greece
| | | | - Dimitrios P Bogdanos
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
- Division of Transplantation, Immunology and Mucosal Biology, MRC Centre for Transplantation, King's College London Medical School, London, UK
| |
Collapse
|
26
|
Liu Y, Smith CE, Parnell LD, Lee YC, An P, Straka RJ, Tiwari HK, Wood AC, Kabagambe EK, Hidalgo B, Hopkins PN, Province MA, Arnett DK, Tucker KL, Ordovas JM, Lai CQ. Salivary AMY1 Copy Number Variation Modifies Age-Related Type 2 Diabetes Risk. Clin Chem 2020; 66:718-726. [PMID: 32337541 PMCID: PMC7192522 DOI: 10.1093/clinchem/hvaa072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 02/28/2020] [Indexed: 11/12/2022]
Abstract
BACKGROUND Copy number variation (CNV) in the salivary amylase gene (AMY1) modulates salivary α-amylase levels and is associated with postprandial glycemic traits. Whether AMY1-CNV plays a role in age-mediated change in insulin resistance (IR) is uncertain. METHODS We measured AMY1-CNV using duplex quantitative real-time polymerase chain reaction in two studies, the Boston Puerto Rican Health Study (BPRHS, n = 749) and the Genetics of Lipid-Lowering Drug and Diet Network study (GOLDN, n = 980), and plasma metabolomic profiles in the BPRHS. We examined the interaction between AMY1-CNV and age by assessing the relationship between age with glycemic traits and type 2 diabetes (T2D) according to high or low copy numbers of the AMY1 gene. Furthermore, we investigated associations between metabolites and interacting effects of AMY1-CNV and age on T2D risk. RESULTS We found positive associations of IR with age among subjects with low AMY1-copy-numbers in both studies. T2D was marginally correlated with age in participants with low AMY1-copy-numbers but not with high AMY1-copy-numbers in the BPRHS. Metabolic pathway enrichment analysis identified the pentose metabolic pathway based on metabolites that were associated with both IR and the interactions between AMY1-CNV and age. Moreover, in older participants, high AMY1-copy-numbers tended to be associated with lower levels of ribonic acid, erythronic acid, and arabinonic acid, all of which were positively associated with IR. CONCLUSIONS We found evidence supporting a role of AMY1-CNV in modifying the relationship between age and IR. Individuals with low AMY1-copy-numbers tend to have increased IR with advancing age.
Collapse
Affiliation(s)
- Yuwei Liu
- Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA
- School of Public Health, Fudan University, Shanghai, China
| | - Caren E Smith
- Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA
| | - Laurence D Parnell
- USDA Agricultural Research Service, Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA
| | - Yu-Chi Lee
- Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA
| | - Ping An
- Division of Statistical Genomics, Department of Genetics, Washington University School of Medicine, St. Louis, MO
| | - Robert J Straka
- Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, MN
| | - Hemant K Tiwari
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL
| | - Alexis C Wood
- USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX
| | | | - Bertha Hidalgo
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL
| | - Paul N Hopkins
- Division of Cardiovascular Medicine, University of Utah, Salt Lake City, UT
| | - Michael A Province
- Division of Statistical Genomics, Department of Genetics, Washington University School of Medicine, St. Louis, MO
| | - Donna K Arnett
- College of Public Health, University of Kentucky, Lexington, KY
| | - Katherine L Tucker
- Department of Biomedical and Nutritional Sciences, University of Massachusetts Lowell, Lowell, MA
| | - Jose M Ordovas
- Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA
- IMDEA Food Institute, CEI UAM + CSIC, Madrid, Spain
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Chao-Qiang Lai
- USDA Agricultural Research Service, Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA
| |
Collapse
|
27
|
Omoruyi FO, Stennett D, Foster S, Dilworth L. New Frontiers for the Use of IP6 and Inositol Combination in Treating Diabetes Mellitus: A Review. Molecules 2020; 25:E1720. [PMID: 32290029 PMCID: PMC7212753 DOI: 10.3390/molecules25071720] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/30/2020] [Accepted: 04/08/2020] [Indexed: 12/17/2022] Open
Abstract
Inositol, or myo-inositol, and associated analog molecules, including myo-inositol hexakisphosphate, are known to possess beneficial biomedical properties and are now being widely studied. The impact of these compounds in improving diabetic indices is significant, especially in light of the high cost of treating diabetes mellitus and associated disorders globally. It is theorized that, within ten years, the global population of people with the disease will reach 578 million individuals, with the cost of care projected to be approximately 2.5 trillion dollars. Natural alternatives to pharmaceuticals are being sought, and this has led to studies involving inositol, and myo-inositol-hexakisphosphate, also referred to as IP6. It has been reported that IP6 can improve diabetic indices and regulate the activities of some metabolic enzymes involved in lipid and carbohydrate metabolism. Current research activities have been focusing on the mechanisms of action of inositol and IP6 in the amelioration of the indices of diabetes mellitus. We demonstrated that an IP6 and inositol combination supplement may regulate insulin secretion, modulate serum leptin concentrations, food intake, and associated weight gain, which may be beneficial in both prediabetic and diabetic states. The supplement attenuates vascular damage by reducing red cell distribution width. Serum HDL is increased while serum triglycerides tend to decrease with consumption of the combination supplement, perhaps due to the modulation of lipogenesis involving reduced serum lipase activity. We also noted increased fecal lipid output following combination supplement consumption. Importantly, liver function was found to be preserved. Concurrently, serum reactive oxygen species production was reduced, indicating that inositol and IP6 supplement consumption may reduce free radical damage to tissues and organs as well as serum lipids and blood glucose by preserving liver function. This review provides an overview of the findings associated with inositol and IP6 supplementation in the effective treatment of diabetes with a view to proposing the potential mechanisms of action.
Collapse
Affiliation(s)
- Felix O. Omoruyi
- Department of Life Sciences, Texas A&M University, Corpus Christi, TX 78412, USA;
| | - Dewayne Stennett
- Department of Basic Medical Sciences, The University of the West Indies Mona Campus, Kingston 7, Mona, Jamaica; (D.S.); (S.F.)
| | - Shadae Foster
- Department of Basic Medical Sciences, The University of the West Indies Mona Campus, Kingston 7, Mona, Jamaica; (D.S.); (S.F.)
| | - Lowell Dilworth
- Department of Pathology, The University of the West Indies Mona Campus, Kingston 7, Mona, Jamaica
| |
Collapse
|
28
|
Fedota OM, Roschenyuk LV, Tyzhnenko TV, Puzik NG, Vorontsov VM, Ryzhko PP. Methotrexate effect on biochemical indices of psoriasis patients depends on MTHFR gene polymorphism. UKRAINIAN BIOCHEMICAL JOURNAL 2020. [DOI: 10.15407/ubj92.01.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
29
|
Ko J, Cho J, Petrov MS. Low serum amylase, lipase, and trypsin as biomarkers of metabolic disorders: A systematic review and meta-analysis. Diabetes Res Clin Pract 2020; 159:107974. [PMID: 31811884 DOI: 10.1016/j.diabres.2019.107974] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/07/2019] [Accepted: 12/02/2019] [Indexed: 12/16/2022]
Abstract
AIMS While there is plentiful evidence on elevated serum levels of amylase, lipase, and trypsin in acute illness, low serum levels of these digestive enzymes have been studied infrequently. The aim was to systematically review published studies on the relationship between low serum levels of amylase, lipase, or trypsin and metabolic disorders. METHODS The search was conducted in MEDLINE and Scopus databases. Studies in humans were included if they reported on the association between serum levels of amylase, lipase, or trypsin within normal range and metabolic disorders. Random-effects meta-analysis was conducted. RESULTS A total of 20 studies encompassing 20,916 participants were included. Compared with healthy individuals, individuals with type 2 diabetes mellitus (mean difference = -5.3; p < 0.001), metabolic syndrome (mean difference = -5.1; p < 0.001), and overweight/obesity (mean difference = -0.8; p = 0.02) had significantly lower serum levels of amylase. Both individuals with type 1 diabetes mellitus (mean difference = -1.8; p < 0.001) and type 2 diabetes mellitus (mean difference = -0.8; p < 0.001) had significantly lower serum levels of lipase compared with healthy individuals. Data on serum trypsin were not suitable for meta-analysis. In the pooled analysis, individuals with type 2 diabetes mellitus had 3.1-times lower serum levels of amylase, 2.9-times lower serum levels of lipase, and 2.5-times lower serum levels of trypsin levels than the upper limits of normal for the three digestive enzymes. CONCLUSION Low serum levels of amylase and lipase are significantly associated with type 2 diabetes mellitus, type 1 diabetes mellitus, excess adiposity, and metabolic syndrome. The role of digestive enzymes in the pathogenesis of metabolic disorders warrants further investigations.
Collapse
Affiliation(s)
- Juyeon Ko
- School of Medicine, University of Auckland, Auckland, New Zealand
| | - Jaelim Cho
- School of Medicine, University of Auckland, Auckland, New Zealand
| | - Maxim S Petrov
- School of Medicine, University of Auckland, Auckland, New Zealand.
| |
Collapse
|
30
|
Pierzynowska K, Oredsson S, Pierzynowski S. Amylase-Dependent Regulation of Glucose Metabolism and Insulin/Glucagon Secretion in the Streptozotocin-Induced Diabetic Pig Model and in a Rat Pancreatic Beta-Cell Line, BRIN-BD11. J Diabetes Res 2020; 2020:2148740. [PMID: 33294459 PMCID: PMC7688362 DOI: 10.1155/2020/2148740] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 10/01/2020] [Accepted: 10/28/2020] [Indexed: 01/21/2023] Open
Abstract
The current study was aimed at highlighting the role of blood pancreatic amylase in the regulation of glucose homeostasis and insulin secretion in a porcine model of streptozotocin- (STZ-) induced diabetes and in a rat pancreatic beta-cell line, BRIN-BD11. Blood glucose, plasma insulin, and glucagon levels were measured following a duodenal glucose tolerance test (IDGTT), in four pigs with STZ-induced type 2 diabetes (T2D pigs) and in four pigs with STZ-induced type 1 diabetes (T1D pigs). Four intact pigs were used as the control group. The effect of amylase supplementation on both acute and chronic insulin secretion was determined in a BRIN-BD11 cell line. The amylase infusion had no effect on the glucose utilization curve or glucagon levels in the healthy pigs. However, a significant lowering of insulin release was observed in healthy pigs treated with amylase. In the T2D pigs, the glucose utilization curve was significantly lowered in the presence of amylase, while the insulin response curve remained unchanged. Amylase also significantly increased glucagon release during the IDGTT in the T2D and T1D pigs, by between 2- and 4-fold. Amylase did not affect the glucose utilization curve in the T1D pigs. Amylase supplementation significantly decreased both acute and chronic insulin secretion in the BRIN-BD11 cells. These data confirm our previous observations and demonstrate the participation of pancreatic amylase in glucose absorption/utilization. Moreover, the present study clearly highlights the direct impact of pancreatic blood amylase on insulin secretion from pancreatic beta-cells and its interactions with insulin and glucagon secretion in a porcine model.
Collapse
Affiliation(s)
- Kateryna Pierzynowska
- Department of Animal Physiology, The Kielanowski Institute of Animal Nutrition and Physiology Polish Academy of Sciences, Instytucka 3, 05110 Jabłonna, Poland
- Department of Biology, Lund University, Sölvegatan 35, 22362 Lund, Sweden
- SGPlus-Group, Alfågelgränden 24, 23132 Trelleborg, Sweden
| | - Stina Oredsson
- Department of Biology, Lund University, Sölvegatan 35, 22362 Lund, Sweden
| | - Stefan Pierzynowski
- Department of Biology, Lund University, Sölvegatan 35, 22362 Lund, Sweden
- SGPlus-Group, Alfågelgränden 24, 23132 Trelleborg, Sweden
- Department of Biology, Institute Rural Medicine, Jaczewskiego 2, 20950 Lublin, Poland
| |
Collapse
|
31
|
Moreno-Padilla M, Maldonado-Montero EF, Enguix-Armada A, Reyes Del Paso GA. Salivary Alpha-Amylase Mediates the Increase in Hunger Levels in Adolescents with Excess Weight after Viewing Food Images. Child Obes 2020; 16:53-58. [PMID: 31545072 DOI: 10.1089/chi.2019.0133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Background: Salivary alpha-amylase (sAA) initiates the digestion process in the mouth and its levels might influence feelings of hunger and the propensity toward obesity. This study aims to evaluate basal differences in sAA between adolescents with excess weight (EW) and normal weight (NW), and the associations between sAA levels and feelings of hunger after viewing food images. Methods: Adolescents (13-18 years old) classified as EW (n = 30) or NW (n = 30) participated in the study. Saliva samples were collected before the administration of a food-choice task. Hunger was evaluated before and after the food-choice task. Results: EW adolescents showed lower basal sAA levels than NW adolescents and a greater increase in hunger levels after viewing food images. In addition, sAA levels had a significant inverse relationship with the increase in hunger in EW adolescents, but not in NW adolescents. Finally, significant inverse associations between sAA, BMI, and body fat percentage were found. Conclusions: Levels of hunger and changes therein, after viewing food are dependent on sAA levels in EW adolescents. This finding indicates that sAA levels may be a mediator of feelings of hunger in individuals with overweight in the context of viewing food cues, suggesting the utility of the sAA enzyme as a marker of hunger and propensity toward obesity.
Collapse
|
32
|
Combined Inositol Hexakisphosphate and Inositol Supplement Consumption Improves Serum Alpha-Amylase Activity and Hematological Parameters in Streptozotocin-Induced Type 2 Diabetic Rats. Adv Pharmacol Sci 2019; 2019:4143137. [PMID: 31737067 PMCID: PMC6815611 DOI: 10.1155/2019/4143137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 09/28/2019] [Indexed: 01/17/2023] Open
Abstract
This study evaluated the effect of combined inositol hexakisphosphate (IP6) and inositol supplement on organ weight, intestinal ATPase activities, complete blood count, and serum analytes in streptozotocin (STZ)-induced type 2 diabetic rats. High-fat diet and a single intraperitoneal injection of streptozotocin (35 mg/kg body weight) were used to induce type 2 diabetes mellitus in Sprague–Dawley rats. The diabetic groups were then treated with either combined IP6 and inositol supplement or glibenclamide for four weeks. Organ weights, intestinal ATPase activities, complete blood count, serum α-amylase, total protein, albumin, and globulin content were determined. Pancreatic weight was significantly reduced while relative kidney and liver weights were elevated in the group treated with combined IP6 and inositol supplement compared to the nondiabetic control. Serum α-amylase activity for the glibenclamide and combination treated groups was significantly improved compared to that of the untreated diabetic group. Red cell distribution width percentage was significantly lower in the combination treated group compared to that in the untreated diabetic group, while intestinal ATPase activities were unaffected by the treatment regime. Combined IP6 and inositol supplement consumption may protect people with diabetes from increased risk of cardiovascular diseases due to the supplement's ability to maintain red cell distribution width percentage towards the normal control group.
Collapse
|
33
|
Abstract
Obesity is a significant public health concern that predisposes individuals to a high risk of premature mortality. Previous studies also reported that low serum concentrations of AMY1 have been associated with obesity. The aimed of the study to assess the relationship between salivary amylase (AMY1) activity and body mass index (BMI) in Saudi male and female adults in Riyadh. This study included a total of 200 (100 individuals who were overweight and obese and 100 who had normal body weight [control individuals]) Saudi participants aged 20 to 50 years old. They were recruited from physical fitness clubs and were school employees in Riyadh City. The dietary food intake was assessed using a 24-hour dietary recall. The activity of the AMY1 was measured using a microplate fluorescence reader. A significant (P ≤ .05) increase was observed in the incidence of hypertension, dyslipidemia, diabetes mellitus (DM), and family history of overweight and obesity in overweight and obese individuals than in the control individuals, and these were in parallel to the significant increase in weight, waist circumference (WC), hip circumference (HC), systolic blood pressure (SBP), diastolic blood pressure (DBP), and BMI. A significant (P ≤ .05) increase was also observed in the carbohydrate and total fat dietary intake of overweight and obese individuals in relation to the respective dietary reference intake (DRI) values. AMY1 activity was significantly lower than the reference values in the overweight and obese group. Furthermore, AMY1 activity was significantly (P ≤ .05) reverse with weight, WC, HC, and BMI in both males and females in the overweight and obese group. In conclusion, the Saudi overweight and obese population seems to be at risk of low AMY1, which correlates with their obesity.
Collapse
Affiliation(s)
- Norah Mubarak Aldossari
- Department of Home Economics, College of Education - Wadi Addawasir, Prince Sattam Bin Abdulaziz University
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Saudi Arabia
| | - Eman E. El Gabry
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Saudi Arabia
- Medical Biochemistry, Cairo University, National Nutrition Institute, Egypt
| | - Gihan E.H. Gawish
- Medical Biochemistry Department., College of Medicine, Imam Mohammad Ibn Saud Islamic University (IMSIU)
- Saudi Society for Clinical Chemistry, SCFHS, Saudi Arabia
| |
Collapse
|
34
|
Valsesia A, Kulkarni SS, Marquis J, Leone P, Mironova P, Walter O, Hjorth MF, Descombes P, Hager J, Saris WH, Astrup A, Darimont C, O'Callaghan NJ. Salivary α-amylase copy number is not associated with weight trajectories and glycemic improvements following clinical weight loss: results from a 2-phase dietary intervention study. Am J Clin Nutr 2019; 109:1029-1037. [PMID: 30982860 DOI: 10.1093/ajcn/nqy363] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 11/29/2018] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Several studies recently reported contradicting results regarding the link between amylase 1 (AMY1) copy numbers (CNs), obesity, and type 2 diabetes. OBJECTIVE The aim of this study was to assess the impact of AMY1 CN on anthropometrics and glycemic outcomes in obese individuals following a 2-phase dietary weight loss intervention. METHODS Using the paralog ratio test, AMY1 CNs were accurately measured in 761 obese individuals from the DiOGenes study. Subjects first underwent an 8-wk low-calorie diet (LCD, at 800 kcal/d) and then were randomly assigned to a 6-mo weight maintenance dietary (WMD) intervention with arms having different glycemic loads. RESULTS At baseline, a modest association between AMY1 CN and BMI (P = 0.04) was observed. AMY1 CN was not associated with baseline glycemic variables. In addition, AMY1 CN was not associated with anthropometric or glycemic outcomes following either LCD or WMD. Interaction analyses between AMY1 CN and nutrient intake did not reveal any significant association with clinical parameters (at baseline and following LCD or WMD) or when testing gene × WMD interactions during the WMD phase. CONCLUSION In the absence of association with weight trajectories or glycemic improvements, the AMY1 CN cannot be considered as an important biomarker for response to a clinical weight loss and weight maintenance programs in overweight/obese subjects. This trial was registered at www.clinicaltrials.gov as NCT00390637.
Collapse
Affiliation(s)
- Armand Valsesia
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Sameer S Kulkarni
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Julien Marquis
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Patricia Leone
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Polina Mironova
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Ondine Walter
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Mads Fill Hjorth
- University of Copenhagen, Department of Nutrition, Exercise and Sports, Faculty of Science, Copenhagen, Denmark
| | - Patrick Descombes
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Jörg Hager
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Wim H Saris
- Department of Human Biology, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Arne Astrup
- University of Copenhagen, Department of Nutrition, Exercise and Sports, Faculty of Science, Copenhagen, Denmark
| | - Christian Darimont
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Nathan J O'Callaghan
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland.,CSIRO Health & Biosecurity, South Australian Health & Medical Research Institute, Adelaide, Australia
| |
Collapse
|
35
|
Pierzynowski SG, Gregory PC, Filip R, Woliński J, Pierzynowska KG. Glucose homeostasis dependency on acini-islet-acinar (AIA) axis communication: a new possible pathophysiological hypothesis regarding diabetes mellitus. Nutr Diabetes 2018; 8:55. [PMID: 30293998 PMCID: PMC6174155 DOI: 10.1038/s41387-018-0062-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 08/29/2018] [Accepted: 09/06/2018] [Indexed: 02/08/2023] Open
Abstract
Studies have highlighted the existence of two intra-pancreatic axes of communication: one involved in the regulation of enzyme production by insulin-the insular-acinar axis; and another involved in the regulation of insulin release by pancreatic enzymes-the acini-insular axis. Previous studies by our laboratory show that pancreatic enzymes can affect blood glucose homeostasis and insulin secretion independently of their digestive functions, both from the gut lumen and probably from the blood. As a result we would like to introduce here the concept of acini-islet-acinar (AIA) axis communication (feedback), which could play an important role in the development of obesity and diabetes type 2. The AIA feedback links the endocrine and exocrine parts of the pancreas and emphasizes the essential role that the pancreas plays, as a single organ, in the regulation of glucose homeostasis by amylase most probably in gut epithelium and by insulin and glucagon in peripheral blood.
Collapse
Affiliation(s)
- Stefan G Pierzynowski
- Department of Biology, Lund University, Sölvegatan 35, 22362, Lund, Sweden. .,Anara AB/SGPlus, Alfågelgränden 24, 23132, Trelleborg, Sweden. .,PROF/Vitanano Sp.z o.o., Woronieckiego 1a-13, 20491, Lublin, Poland. .,Department of Medical Biology., Inst, Rural Medicine, Jaczewskiego 2, 20950, Lublin, Poland. .,Innovation Centre - STB, Skarszewska 23, 83100, Tczew, Poland.
| | - Peter C Gregory
- PROF/Vitanano Sp.z o.o., Woronieckiego 1a-13, 20491, Lublin, Poland
| | - Rafał Filip
- Department of Gastroenterology with IBD Unit of Clinical Hospital 2, University of Rzeszow, Lwowska 60, Rzeszow, 35301, Poland
| | - Jarosław Woliński
- Department of Animal Physiology, The Kielanowski Institute of Animal Nutrition and Physiology Polish Academy of Sciences, Instytucka 3, 05110, Jabłonna, Poland
| | - Kateryna Goncharova Pierzynowska
- Department of Biology, Lund University, Sölvegatan 35, 22362, Lund, Sweden. .,Anara AB/SGPlus, Alfågelgränden 24, 23132, Trelleborg, Sweden. .,PROF/Vitanano Sp.z o.o., Woronieckiego 1a-13, 20491, Lublin, Poland. .,Innovation Centre - STB, Skarszewska 23, 83100, Tczew, Poland.
| |
Collapse
|
36
|
Elder PJD, Ramsden DB, Burnett D, Weickert MO, Barber TM. Human amylase gene copy number variation as a determinant of metabolic state. Expert Rev Endocrinol Metab 2018; 13:193-205. [PMID: 30063422 DOI: 10.1080/17446651.2018.1499466] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Humans have multiple genes encoding amylase that are broadly divided into salivary (AMY1) and pancreatic (AMY2) genes. They exhibit some of the greatest copy numbers of any human gene, an expansion possibly driven by increased dietary starch intake. Within the population, amylase gene copy number is highly variable and there is evidence of an inverse association between AMY1 copy number and BMI. AREAS COVERED We examine the evidence for the link between AMY1 and BMI, its potential mechanisms, and the metabolic effects of salivary and pancreatic amylase, both in the gastrointestinal tract and the blood EXPERT COMMENTARY Salivary amylase may influence postprandial 'cephalic phase' insulin release, which improves glucose tolerance, while serum amylase may have insulin-sensitizing properties. This could explain the favorable metabolic status associated with higher AMY1 copy number. The association with BMI is harder to explain and is potentially mediated by increased flux of undigested starch into the ileum, with resultant effects on short-chain fatty acids (SCFAs), changes in gut microbiota and effects on appetite and energy expenditure in those with low copy number. Future research on the role of amylase as a determinant of metabolic health and BMI may lead to novel therapies to target obesity.
Collapse
Affiliation(s)
- Patrick J D Elder
- a Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism, University Hospitals Coventry and Warwickshire , Coventry , UK
| | - David B Ramsden
- b Institute of Metabolism and Systems Research, The Medical School, University of Birmingham , Birmingham , UK
| | - David Burnett
- c Micropathology Ltd, University of Warwick Science Park , Coventry , UK
| | - Martin O Weickert
- a Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism, University Hospitals Coventry and Warwickshire , Coventry , UK
- d Division of Biomedical Sciences , Warwick Medical School, University of Warwick , Coventry , UK
- e Centre of Applied Biological & Exercise Sciences, Faculty of Health & Life Sciences , Coventry University , Coventry , UK
| | - Thomas M Barber
- a Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism, University Hospitals Coventry and Warwickshire , Coventry , UK
- d Division of Biomedical Sciences , Warwick Medical School, University of Warwick , Coventry , UK
| |
Collapse
|
37
|
Yang KC, Yanai G, Yang SY, Canning P, Satou Y, Kawagoe M, Sumi S. Low-adhesive ethylene vinyl alcohol-based packaging to xenogeneic islet encapsulation for type 1 diabetes treatment. Biotechnol Bioeng 2018; 115:2341-2355. [PMID: 29777589 DOI: 10.1002/bit.26730] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/17/2018] [Accepted: 05/16/2018] [Indexed: 01/16/2023]
Abstract
Transplantation of encapsulated porcine islets is proposed to treat type 1 diabetes. However, the envelopment of fibrous tissue and the infiltration of immune cells impair islet function and eventually cause implant failure. It is known that hemodialysis using an ethylene vinyl alcohol (EVOH) membrane results in minor tissue responses. Therefore, we hypothesized that using a low-adhesive EVOH membrane for encapsulation may prevent host cell accumulation and fibrous capsule formation. In this study, rat islets suspended in chitosan gel were encapsulated in bags made from highly porous EVOH membranes, and their in vitro insulin secretion function as well as in vivo performance was evaluated. The results showed that the EVOH bag did not affect islet survival or glucose-stimulated insulin secretion. Whereas naked islets were dysfunctional after 7 days of culture in vitro, islets within the EVOH bag produced insulin continuously for 30 days. Streptozotocin-induced diabetic mice were given islets-chitosan gel-EVOH implants intraperitoneally (650-800 islets equivalent) and exhibited lower blood glucose levels and regained body weight during a 4-week observation period. The transplanted mice had higher levels of serum insulin and C-peptide, with an improved blood glucose disappearance rate. Retrieved implants had minor tissue adhesion, and histology showed a limited number of mononuclear cells and fibroblasts surrounding the implants. No invasion of host cells into the EVOH bags was noticed, and the encapsulated islets were intact and positive for insulin-glucagon immunostaining. In conclusion, an EVOH bag can protect encapsulated islets, limit fibrous capsule formation, and extend graft function.
Collapse
Affiliation(s)
- Kai-Chiang Yang
- Laboratory of Organ and Tissue Reconstruction, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.,School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Goichi Yanai
- Laboratory of Organ and Tissue Reconstruction, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Sin-Yu Yang
- Laboratory of Organ and Tissue Reconstruction, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Priyadarshini Canning
- Laboratory of Organ and Tissue Reconstruction, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Yoshio Satou
- Molding Component Business Department, Kuraray Co., Ltd, Tokyo, Japan
| | - Masako Kawagoe
- Molding Component Business Department, Kuraray Co., Ltd, Tokyo, Japan
| | - Shoichiro Sumi
- Laboratory of Organ and Tissue Reconstruction, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| |
Collapse
|
38
|
Reduced salivary amylase activity in metabolic syndrome patients with obesity could be improved by treatment with a dipeptidyl peptidase IV inhibitor. Clin Oral Investig 2018. [PMID: 29520469 DOI: 10.1007/s00784-018-2402-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVES The present study is to investigate the salivary gland function of metabolic syndrome (MetS) patients, as indicated by salivary flow rate, amylase activity, and salivary oxidative stress, by measuring MDA level. MATERIALS AND METHODS One hundred and eighty-one MetS patients from Maharaj Nakorn Chiang Mai Hospital were enrolled onto this study. The metabolic parameters of each patient were collected and evaluated. Unstimulated saliva was also collected for 5 min. Salivary gland functions, including salivary flow rate, amylase activity, and salivary MDA levels, were investigated. RESULTS High levels of triglycerides, high-density lipoprotein, blood pressure, and waist circumference in MetS patients did not show a correlation with altered salivary gland function. However, a decrease in salivary flow rate was observed in MetS patients with hyperglycemia. In addition, decreased amylase activity was found in MetS patients with obesity (BMI ≥ 23 kg/m2). Salivary amylase activity of MetS patients treated with dipeptidyl peptidase IV (DPP-IV) inhibitor was significantly greater than that observed in MetS patients without a DPP-IV inhibitor. Moreover, the salivary amylase activity in MetS patients was found to be independently positively correlated with DPP-IV inhibitor therapy (r = 0.708, p < 0.01). CONCLUSION These findings suggest that obesity and hyperglycemia in MetS patients were associated with the impairment of salivary glands. Treatment with a DPP-IV inhibitor was found to exert beneficial effects on the salivary gland. CLINICAL RELEVANCE This study demonstrated the impairment of salivary glands of MetS patients and the beneficial effect of DPP-IV inhibitor treatment in the salivary glands.
Collapse
|
39
|
Nakajima K, Oda E. Ketonuria may be associated with low serum amylase independent of body weight and glucose metabolism. Arch Physiol Biochem 2017; 123:293-296. [PMID: 28508677 DOI: 10.1080/13813455.2017.1326941] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
CONTEXT Ketonuria, which reflects a preferential combustion of lipids relative to carbohydrates, is often observed in lean rather than obese people. Clinical studies have shown that individuals with diabetes and/or obesity predispose to have low serum amylase (LSA). OBJECTIVE To investigate the association between ketonuria and LSA. METHODS We examined ketonuria assessed by dipstick urinalysis and clinical parameters including serum amylase in 3638 Japanese people aged 25-79 years who underwent a health-screening checkup. RESULTS There was an inverse relationship between body mass index (BMI) and serum amylase. The lowest serum amylase was observed in obese subjects (BMI ≥ 25.0 kg/m2) with positive ketonuria. Logistic regression analysis showed that ketonuria was significantly associated with LSA (<50 IU/L), which was not altered by the adjustments for relevant confounders including age, sex, BMI, and HbA1c. CONCLUSIONS Current results suggest a relative unavailability of carbohydrates for energy production in individuals with LSA.
Collapse
Affiliation(s)
- Kei Nakajima
- a School of Nutrition and Dietetics, Faculty of Health and Social Services , Kanagawa University of Human Services , Yokosuka , Kanagawa , Japan
- b Department of Endocrinology and Diabetes , Saitama Medical Center, Saitama Medical University , Kawagoe, Saitama , Japan
- c Division of Clinical Nutrition, Department of Medical Dietetics, Faculty of Pharmaceutical Sciences , Josai University , Sakado, Saitama , Japan
| | - Eiji Oda
- d Medical Check-up Center , Tachikawa General Hospital , Nagaoka , Japan
| |
Collapse
|
40
|
Flexible immunosensor for the detection of salivary α-amylase in body fluids. Talanta 2017; 174:52-58. [DOI: 10.1016/j.talanta.2017.05.075] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/18/2017] [Accepted: 05/26/2017] [Indexed: 02/03/2023]
|
41
|
Heianza Y, Sun D, Wang T, Huang T, Bray GA, Sacks FM, Qi L. Starch Digestion-Related Amylase Genetic Variant Affects 2-Year Changes in Adiposity in Response to Weight-Loss Diets: The POUNDS Lost Trial. Diabetes 2017; 66:2416-2423. [PMID: 28659346 PMCID: PMC5566300 DOI: 10.2337/db16-1482] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 06/17/2017] [Indexed: 01/05/2023]
Abstract
Salivary and pancreatic amylases (encoded by AMY1 and AMY2 genes, respectively) are responsible for digesting starchy foods. AMY1 and AMY2 show copy number variations that affect differences in amylase amount and activity, and AMY1 copies have been associated with adiposity. We investigated whether genetic variants determining amylase gene copies are associated with 2-year changes in adiposity among 692 overweight and obese individuals who were randomly assigned to diets varying in macronutrient content. We found that changes in body weight (BW) and waist circumference (WC) were significantly different according to the AMY1-AMY2 rs11185098 genotype. Individuals carrying the A allele (indicating higher amylase amount and activity) showed a greater reduction in BW and WC at 6, 12, 18, and 24 months than those without the A allele (P < 0.05 for all). The association was stronger for long-term changes compared with short-term changes of these outcomes. The genetic effects on these outcomes did not significantly differ across diet groups. In conclusion, the genetic variant determining starch metabolism influences the response to weight-loss dietary intervention. Overweight and obese individuals carrying the AMY1-AMY2 rs11185098 genotype associated with higher amylase activity may have greater loss of adiposity during low-calorie diet interventions.
Collapse
Affiliation(s)
- Yoriko Heianza
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA
| | - Dianjianyi Sun
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA
| | - Tiange Wang
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA
| | - Tao Huang
- Epidemiology Domain, Saw Swee Hock School of Public Health and Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - George A Bray
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Frank M Sacks
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Lu Qi
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
- Channing Laboratory, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| |
Collapse
|
42
|
Experiments suggesting extra-digestive effects of enteral pancreatic amylase and its peptides on glucose homeostasis in a pig model. Sci Rep 2017; 7:8628. [PMID: 28819193 PMCID: PMC5561192 DOI: 10.1038/s41598-017-07387-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 06/23/2017] [Indexed: 02/07/2023] Open
Abstract
The studies presented were designed to highlight the impact of pancreatic enzymes on glycemic control and insulin response. Blood glucose and plasma insulin levels were monitored after intravenous, oral or direct gut glucose tolerance tests (GTT) in 6 pigs with an intact gastrointestinal tract and in 12 pigs following duodenal-jejunal bypass (DJB) surgery. In the intact pigs, pancreatic enzymes (Creon®) given orally 1 h prior to the GTT, lowered the blood glucose levels during the oral and meal GTT and reduced the plasma insulin response during the intravenous and meal GTT. In DJB pigs, blood glucose and plasma insulin levels were higher following glucose loading into the by-passed biliopancreatic limb as compared to that following glucose loading orally or into the common intestinal limb. Infusion of amylase or amylase peptides together with glucose into the biliopancreatic limb lowered blood glucose levels in DJB pigs. These preliminary data suggest new, extra-digestive, actions of enteral pancreatic enzymes – probably amylase or its peptides – on glucose homeostasis, with an reduction in net glucose absorption into the blood and in insulin response. This ability of digestive enzymes (amylase) to reduce post-prandial hyperglycaemia in an insulin-independent manner could aid in preventing the development of obesity and diabetes.
Collapse
|
43
|
Fernández CI, Wiley AS. Rethinking the starch digestion hypothesis forAMY1copy number variation in humans. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2017; 163:645-657. [DOI: 10.1002/ajpa.23237] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 04/09/2017] [Accepted: 04/16/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Catalina I. Fernández
- Indiana University Bloomington; 701 E. Kirkwood Avenue Bloomington Indiana 47405-7100
| | - Andrea S. Wiley
- Indiana University Bloomington; 701 E. Kirkwood Avenue Bloomington Indiana 47405-7100
| |
Collapse
|
44
|
Bonnefond A, Yengo L, Dechaume A, Canouil M, Castelain M, Roger E, Allegaert F, Caiazzo R, Raverdy V, Pigeyre M, Arredouani A, Borys JM, Lévy-Marchal C, Weill J, Roussel R, Balkau B, Marre M, Pattou F, Brousseau T, Froguel P. Relationship between salivary/pancreatic amylase and body mass index: a systems biology approach. BMC Med 2017; 15:37. [PMID: 28228143 PMCID: PMC5322607 DOI: 10.1186/s12916-017-0784-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 01/09/2017] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Salivary (AMY1) and pancreatic (AMY2) amylases hydrolyze starch. Copy number of AMY1A (encoding AMY1) was reported to be higher in populations with a high-starch diet and reduced in obese people. These results based on quantitative PCR have been challenged recently. We aimed to re-assess the relationship between amylase and adiposity using a systems biology approach. METHODS We assessed the association between plasma enzymatic activity of AMY1 or AMY2, and several metabolic traits in almost 4000 French individuals from D.E.S.I.R. longitudinal study. The effect of the number of copies of AMY1A (encoding AMY1) or AMY2A (encoding AMY2) measured through droplet digital PCR was then analyzed on the same parameters in the same study. A Mendelian randomization analysis was also performed. We subsequently assessed the association between AMY1A copy number and obesity risk in two case-control studies (5000 samples in total). Finally, we assessed the association between body mass index (BMI)-related plasma metabolites and AMY1 or AMY2 activity. RESULTS We evidenced strong associations between AMY1 or AMY2 activity and lower BMI. However, we found a modest contribution of AMY1A copy number to lower BMI. Mendelian randomization identified a causal negative effect of BMI on AMY1 and AMY2 activities. Yet, we also found a significant negative contribution of AMY1 activity at baseline to the change in BMI during the 9-year follow-up, and a significant contribution of AMY1A copy number to lower obesity risk in children, suggesting a bidirectional relationship between AMY1 activity and adiposity. Metabonomics identified a BMI-independent association between AMY1 activity and lactate, a product of complex carbohydrate fermentation. CONCLUSIONS These findings provide new insights into the involvement of amylase in adiposity and starch metabolism.
Collapse
Affiliation(s)
- Amélie Bonnefond
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199 - EGID, Lille, 59000, France.
| | - Loïc Yengo
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199 - EGID, Lille, 59000, France.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, 4067, Australia
| | - Aurélie Dechaume
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199 - EGID, Lille, 59000, France
| | - Mickaël Canouil
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199 - EGID, Lille, 59000, France
| | - Maxime Castelain
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199 - EGID, Lille, 59000, France
| | - Estelle Roger
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199 - EGID, Lille, 59000, France
| | - Frédéric Allegaert
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199 - EGID, Lille, 59000, France
| | - Robert Caiazzo
- University of Lille, Inserm, U1190 - EGID, Lille, 59000, France.,Endocrine Surgery Department, CHU of Lille, Lille, 59000, France
| | - Violeta Raverdy
- University of Lille, Inserm, U1190 - EGID, Lille, 59000, France.,Endocrine Surgery Department, CHU of Lille, Lille, 59000, France
| | - Marie Pigeyre
- University of Lille, Inserm, U1190 - EGID, Lille, 59000, France.,Endocrine Surgery Department, CHU of Lille, Lille, 59000, France
| | | | | | - Claire Lévy-Marchal
- Inserm CIE 05 - Department of Clinical Epidemiology, Robert Debré Hospital, Paris, 75019, France
| | - Jacques Weill
- Pediatric Endocrine Department, CHU of Lille, Lille, 59000, France
| | - Ronan Roussel
- Inserm, U1138, Centre de Recherche des Cordeliers, Paris, 75006, France.,Paris-Diderot University, Sorbonne Paris-Cité, Paris, 75013, France.,Department of Endocrinology-Diabetology and Nutrition, DHU-FIRE, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, 75018, France
| | - Beverley Balkau
- Inserm, U1018, CESP, Team 5 (EpReC, Renal and cardiovascular Epidemiology), UVSQ-UPS, Villejuif, 94807, France
| | - Michel Marre
- Inserm, U1138, Centre de Recherche des Cordeliers, Paris, 75006, France.,Paris-Diderot University, Sorbonne Paris-Cité, Paris, 75013, France.,Department of Endocrinology-Diabetology and Nutrition, DHU-FIRE, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, 75018, France
| | - François Pattou
- University of Lille, Inserm, U1190 - EGID, Lille, 59000, France.,Endocrine Surgery Department, CHU of Lille, Lille, 59000, France
| | - Thierry Brousseau
- UF8832 - Biochimie Automatisée, Pôle de Biologie Pathologie Génétique, CHU of Lille, Lille, 59000, France
| | - Philippe Froguel
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8199 - EGID, Lille, 59000, France. .,Department of Genomics of Common Disease, School of Public Health, Imperial College London, Hammersmith Hospital, London, W12 0NN, UK.
| |
Collapse
|
45
|
Arredouani A, Stocchero M, Culeddu N, Moustafa JES, Tichet J, Balkau B, Brousseau T, Manca M, Falchi M. Metabolomic Profile of Low-Copy Number Carriers at the Salivary α-Amylase Gene Suggests a Metabolic Shift Toward Lipid-Based Energy Production. Diabetes 2016; 65:3362-3368. [PMID: 27436124 DOI: 10.2337/db16-0315] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 07/06/2016] [Indexed: 12/28/2022]
Abstract
Low serum salivary amylase levels have been associated with a range of metabolic abnormalities, including obesity and insulin resistance. We recently suggested that a low copy number at the AMY1 gene, associated with lower enzyme levels, also increases susceptibility to obesity. To advance our understanding of the effect of AMY1 copy number variation on metabolism, we compared the metabolomic signatures of high- and low-copy number carriers. We analyzed, using mass spectrometry and nuclear magnetic resonance (NMR), the sera of healthy normal-weight women carrying either low-AMY1 copies (LAs: four or fewer copies; n = 50) or high-AMY1 copies (HAs: eight or more copies; n = 50). Best-fitting multivariate models (empirical P < 1 × 10-3) of mass spectrometry and NMR data were concordant in showing differences in lipid metabolism between the two groups. In particular, LA carriers showed lower levels of long- and medium-chain fatty acids, and higher levels of dicarboxylic fatty acids and 2-hydroxybutyrate (a known marker of glucose malabsorption). Taken together, these observations suggest increased metabolic reliance on fatty acids in LA carriers through β- and ω-oxidation and reduced cellular glucose uptake with consequent diversion of acetyl-CoA into ketogenesis. Our observations are in line with previously reported delayed glucose uptake in LA carriers after starch consumption. Further functional studies are needed to extrapolate from our findings to implications for biochemical pathways.
Collapse
Affiliation(s)
- Abdelilah Arredouani
- Hamad Ben Khalifa University, Qatar Biomedical Research Institute, Diabetes Research Centre, Qatar Foundation, Doha, Qatar
- Department of Genomics of Common Disease, Imperial College London, U.K
| | | | - Nicola Culeddu
- Istituto di Chimica Biomolecolare, Laboratory of Nuclear Magnetic Resonance, Consiglio Nazionale delle Ricerche, Sassari, Italy
| | - Julia El-Sayed Moustafa
- Department of Twin Research & Genetic Epidemiology, King's College London, St. Thomas' Hospital Campus, London, U.K
| | | | - Jean Tichet
- Institut Inter-Régional Pour la Santé, La Riche, France
| | - Beverley Balkau
- Centre de Recherche en Epidémiologie et Santé des Populations, Le Centre de Recherche en Epidémiologie et Santé des Populations, INSERM U1018, Renal and Cardiovascular Epidemiology, Villejuif, France
- Universities Versailles-St. Quentin and Paris-Sud, UMRS 1018, Villejuif, France
| | - Thierry Brousseau
- UF8832, Biochimie Automatisée, Pôle de Biologie Pathologie Génétique, Centre Hospitalier Régional Universitaire, Lille, France
| | - Marco Manca
- Experimental Vascular Pathology, Cardiovascular Research Institute Maastricht, University of Maastricht, Maastricht, the Netherlands
- Accelerators & Technology Sector, CERN, Geneva, Switzerland
| | - Mario Falchi
- Department of Genomics of Common Disease, Imperial College London, U.K.
- Department of Twin Research & Genetic Epidemiology, King's College London, St. Thomas' Hospital Campus, London, U.K
| |
Collapse
|
46
|
Madole MB, Iyer CM, Madivalar MT, Wadde SK, Howale DS. Evaluation of Biochemical Markers Serum Amylase and Serum Lipase for the Assessment of Pancreatic Exocrine Function in Diabetes Mellitus. J Clin Diagn Res 2016; 10:BC01-BC04. [PMID: 28050357 DOI: 10.7860/jcdr/2016/23787.8900] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 09/27/2016] [Indexed: 01/29/2023]
Abstract
INTRODUCTION Diabetes mellitus (DM), a metabolic disorder characterized by hyperglycaemia, associated with deficiency or resistance to insulin indicates endocrinal abnormality of the pancreas. Amylase and lipase are enzymes secreted by the exocrine portion of the pancreas. Endocrinal derangement observed in diabetes may interfere with the exocrine function of the pancreas. AIM To estimate the levels of fasting blood sugar, serum lipase, serum amylase in patients of type 1 and type 2 DM. Than comparing them with healthy controls and to study the effect of type 1 and type 2 DM on pancreatic exocrine function using serum levels of amylase and lipase as biochemical marker. MATERIALS AND METHODS This study was conducted at GMERS Medical College and Hospital from Dec 2015 to July 2016. Thirty patients of type 1 DM and 30 patients of type 2 DM, who were already diagnosed and taking treatment, were included in this study. A total number of 30 apparently healthy individuals were recruited as the control group in our study. Fasting venous blood samples were collected from the cases as well as the controls and they were analysed by using semi auto analyser for blood glucose, serum amylase and serum lipase. The results were analysed statistically by using SPSS software. Values were expressed as means ± SD. RESULTS We found statistically significant (p<0.01) low values for serum amylase and serum lipase in patients with type 1 and type 2 DM as compared to healthy controls. Fasting blood sugar was significantly higher in cases as compared to controls. We found negative correlation of fasting blood sugar level with serum amylase and serum lipase and positive correlation of serum amylase with serum lipase in both type 1 and type 2 DM. CONCLUSION Our study clearly demonstrated that in type 1 and type 2 DM, there was increase in fasting blood sugar with decrease in serum amylase and serum lipase which signifies the derangement of endocrine-exocrine axis of the pancreas. Serum amylase and serum lipase can be used as biochemical markers for assessment of pancreatic exocrine function.
Collapse
Affiliation(s)
- Mahesh Basavaraj Madole
- Associate Professor, Department of Biochemistry, GMERS , Medical College, Valsad, Gujarat, India
| | - Chandrashekhar M Iyer
- Professor, Department of Biochemistry, Indira Gandhi Medical College , Nagpur, Maharashtra, India
| | | | - Satish Kishanrao Wadde
- Assistant Professor, Department of Community Medicine, Govt. Medical College Latur, Maharashtra, India
| | | |
Collapse
|
47
|
Abstract
Salivary amylase is a glucose-polymer cleavage enzyme that is produced by the salivary glands. It comprises a small portion of the total amylase excreted, which is mostly made by the pancreas. Amylases digest starch into smaller molecules, ultimately yielding maltose, which in turn is cleaved into two glucose molecules by maltase. Starch comprises a significant portion of the typical human diet for most nationalities. Given that salivary amylase is such a small portion of total amylase, it is unclear why it exists and whether it conveys an evolutionary advantage when ingesting starch. This review will consider the impact of salivary amylase on oral perception, nutrient signaling, anticipatory metabolic reflexes, blood sugar, and its clinical implications for preventing metabolic syndrome and obesity.
Collapse
Affiliation(s)
| | - Paul A S Breslin
- Monell Chemical Senses Center, Philadelphia, PA, USA.
- Department of Nutritional Sciences, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, USA.
| |
Collapse
|
48
|
Zhuang L, Su JB, Zhang XL, Huang HY, Zhao LH, Xu F, Chen T, Wang XQ, Wu G, Wang XH. Serum Amylase Levels in Relation to Islet β Cell Function in Patients with Early Type 2 Diabetes. PLoS One 2016; 11:e0162204. [PMID: 27606813 PMCID: PMC5015989 DOI: 10.1371/journal.pone.0162204] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 08/18/2016] [Indexed: 12/24/2022] Open
Abstract
Objective The insulin-pancreatic acinar axis may play a major role in pancreatic function. Amylase is an exocrine enzyme that is produced by pancreatic acinar cells, and low serum amylase levels may be associated with endocrine diseases, such as metabolic syndrome and diabetes. We hypothesized that low serum amylase levels may be associated with impaired islet β cell function in type 2 diabetes. Therefore, we investigated the relationship between the serum amylase levels and islet β cell function in patients with early type 2 diabetes. Methods The cross-sectional study recruited 2327 patients with a mean of 1.71±1.62 years since their diagnosis of type 2 diabetes, and all participants were treated with lifestyle intervention alone. Serum amylase levels, the 75-g oral glucose tolerance test (OGTT) and metabolic risk factors were examined in all participants. The insulin sensitivity index (Matsuda index, ISIMatsuda) and insulin secretion index (ratio of total area-under-the-insulin-curve to glucose-curve, AUCins/glu) were derived from the OGTT. Integrated islet β cell function was assessed by the Insulin Secretion-Sensitivity Index-2 (ISSI-2) (ISIMatsuda multiplied by AUCins/glu). Results Serum amylase levels in the normal range were significantly correlated with ISIMatsuda, AUCins/glu and ISSI-2 (r = 0.203, 0.246 and 0.413, respectively, p<0.001). The association of the serum amylase levels with ISSI-2 (adjusted r = 0.363, p<0.001) was closer than the association with ISIMatsuda (adjusted r = 0.191, p<0.001) and AUCins/glu (adjusted r = 0.174, p<0.001) after adjusting for the anthropometric indices, time since the diagnosis of diabetes, lipid profiles, uric acid levels, estimated glomerular filtration rate, HbA1c levels, smoking and drinking using the partial correlation test. After adjusting for these metabolic risk factors in the multivariate regression analysis with the amylase levels as the dependent variable, ISSI-2 was the major independent contributor to the serum amylase levels (β = 0.416, t = 21.72, p<0.001). Meanwhile, in a comparison of the groups with the highest and lowest quartiles of serum amylase levels, the mean difference in logISSI-2 was 0.902 (95% CI 0.823 to 0.982), and after adjusting for metabolic risk factors, the mean difference in logISSI-2 was 0.610 (0.537 to 0.683). Conclusions Serum amylase levels in the normal range are positively associated with integrated islet β cell function in patients with early type 2 diabetes, as assessed by ISSI-2.
Collapse
Affiliation(s)
- Lei Zhuang
- Department of Endocrinology, The Second People's Hospital of Nantong City, No. 43 Xinglong Street, Gangzha district, Nantong, 226002, China
| | - Jian-bin Su
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
- * E-mail:
| | - Xiu-lin Zhang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
| | - Hai-yan Huang
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
| | - Li-hua Zhao
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
| | - Feng Xu
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
| | - Tong Chen
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
| | - Xue-qin Wang
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
| | - Gang Wu
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
| | - Xiao-hua Wang
- Department of Endocrinology, The Second Affiliated Hospital of Nantong University, No. 6 North Hai-er-xiang Road, Nantong, 226001, China
| |
Collapse
|
49
|
Dias JP, Schrack JA, Shardell MD, Egan JM, Studenski S. Association of abdominal fat with serum amylase in an older cohort: The Baltimore Longitudinal Study of Aging. Diabetes Res Clin Pract 2016; 116:212-7. [PMID: 27321338 PMCID: PMC5832961 DOI: 10.1016/j.diabres.2016.04.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/16/2016] [Indexed: 12/17/2022]
Abstract
AIMS Abdominal fat is a major determinant of metabolic diseases in older individuals. Obesity and diabetes are associated with low serum amylase (SA) levels, but the association between SA and metabolic disease is poorly understood. We investigated the association of low SA with diabetes and sex-specific associations of serum amylase with abdominal fat in older adults. METHODS In community-dwelling volunteers from the Baltimore Longitudinal Study of Aging (778 participants, age 66.8±13.6years), we assessed abdominal fat by computed tomography and diabetes status using the American Diabetes Association criteria. Linear regression analyses assessed the cross-sectional associations between abdominal fat and SA, and logistic regression assessed the odds of diabetes, given low SA. RESULTS In unadjusted analyses, individuals in the lowest SA quartile (<48μ/L) had 1.97 greater odds of diabetes, (95%CI, 1.01-3.83) than those in the highest quartile (⩾80μ/L). This association was no longer significant after adjusting for visceral adipose tissue area (VAT, dm(2)), abdominal subcutaneous adipose tissue (SAT, dm(2)) or BMI. In adjusted analyses, VAT and SAT were significantly associated with SA in both sexes. Among women, SA was more strongly associated with VAT than with SAT or BMI; VAT (β=-0.117±0.048, P<0.001), SAT (β=-0.023±0.025, P=0.346) and BMI (β=-0.0052±0.075, P=0.49). CONCLUSIONS The association between SA and diabetes was explained mainly by abdominal visceral fat. In women, SA was more strongly associated with VAT than with BMI or SAT. These findings provide motivation for future mechanistic studies on SA's role in metabolic diseases.
Collapse
Affiliation(s)
- Jenny Pena Dias
- Laboratory of Clinical Investigation, National Institute on Aging, Baltimore, MD 21225, United States.
| | - Jennifer A Schrack
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, United States
| | - Michelle D Shardell
- Translational Gerontology Branch, National Institute on Aging, Baltimore, MD 21225, United States
| | - Josephine M Egan
- Laboratory of Clinical Investigation, National Institute on Aging, Baltimore, MD 21225, United States
| | - Stephanie Studenski
- Translational Gerontology Branch, National Institute on Aging, Baltimore, MD 21225, United States
| |
Collapse
|
50
|
Seo DW, Park HB, Jin S, Cahyadi M, Choi N, Heo KN, Jo C, Lee JH. Genome scan linkage analysis identifies quantitative trait loci affecting serum clinical–chemical traits in Korean native chicken. Mol Biol Rep 2016; 43:601-5. [DOI: 10.1007/s11033-016-3994-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 05/03/2016] [Indexed: 01/22/2023]
|