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Kemaneci S, Keser A, Özmen Ö. Is resveratrol really effective in kidney disease?: A different perspective than ever before. Immunopharmacol Immunotoxicol 2024:1-9. [PMID: 38812267 DOI: 10.1080/08923973.2024.2360067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 05/18/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Chronic kidney disease (CKD) is a global health problem and it is stated that the use of resveratrol supplement contributes to the protection of kidney health. In this study, it was aimed to evaluate the effect of resveratrol supplementation on kidney function, inflammation and histopathological findings in rats with experimental adenine-induced kidney damage. METHODS Three different groups of 10 randomly selected rats were formed. The first group was the negative control group, the second group was the uremic control group (KDG), and the third group was the group in which uremia was created and resveratrol was applied (RG). Kidney damage was induced by administration of 200 mg/kg adenine. Resveratrol supplementation was administered at 20 mg/kg after kidney damage. Serum urea, creatinine, indoxyl sulfate (IS), p-cresol, glomerular filtration rate, C-reactive protein (CRP); interleukin (IL)-6 and tumor necrosis factor (TNF)-α gene expression levels and histopathological findings were evaluated. RESULTS It was determined that resveratrol supplement applied after the formation of connective tissue in renal failure didn't have an improvement effect on the urine amount, kidney function and inflammatory parameters and histopathological changes (p > 0.05). Just, the increase in the CRP value of KDG (p < 0.05) was not observed in RG. CONCLUSION The findings suggest that resveratrol administered after kidney damage with adenine has no effect on kidney disease.
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Affiliation(s)
- Sümeyye Kemaneci
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Alev Keser
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Ankara University, Ankara, Turkey
| | - Özlem Özmen
- Department of Veterinary Pathology, Faculty of Veterinary, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
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Misiakiewicz-Has K, Maciejewska-Markiewicz D, Szypulska-Koziarska D, Kolasa A, Wiszniewska B. The Influence of Soy Isoflavones and Soy Isoflavones with Inulin on Kidney Morphology, Fatty Acids, and Associated Parameters in Rats with and without Induced Diabetes Type 2. Int J Mol Sci 2024; 25:5418. [PMID: 38791455 PMCID: PMC11121859 DOI: 10.3390/ijms25105418] [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: 03/12/2024] [Revised: 05/08/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Diabetes mellitus resulting from hyperglycemia stands as the primary cause of diabetic kidney disease. Emerging evidence suggests that plasma concentrations of soy isoflavones, substances with well-established antidiabetic properties, rise following supplemental inulin administration. The investigation encompassed 36 male Sprague-Dawley (SD) rats segregated into two cohorts: non-diabetic and diabetic, induced with type 2 diabetes (high-fat diet + two intraperitoneal streptozotocin injections). Each cohort was further divided into three subgroups (n = 6): control, isoflavone-treated, and isoflavone plus inulin-treated rats. Tail blood glucose and ketone levels were gauged. Upon termination, blood samples were drawn directly from the heart for urea, creatinine, and HbA1c/HbF analyses. One kidney per rat underwent histological (H-E) and immunohistochemical assessments (anti-AQP1, anti-AQP2, anti-AVPR2, anti-SLC22A2, anti-ACC-alpha, anti-SREBP-1). The remaining kidney underwent fatty acid methyl ester analysis. Results unveiled notable alterations in water intake, body and kidney mass, kidney morphology, fatty acids, AQP2, AVPR2, AcetylCoA, SREBP-1, blood urea, creatinine, and glucose levels in control rats with induced type 2 diabetes. Isoflavone supplementation exhibited favorable effects on plasma urea, plasma urea/creatinine ratio, glycemia, water intake, and kidney mass, morphology, and function in type 2 diabetic rats. Additional inulin supplementation frequently modulated the action of soy isoflavones.
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Affiliation(s)
- Kamila Misiakiewicz-Has
- Department of Histology and Embryology, Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland; (D.S.-K.); (A.K.); (B.W.)
| | | | - Dagmara Szypulska-Koziarska
- Department of Histology and Embryology, Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland; (D.S.-K.); (A.K.); (B.W.)
| | - Agnieszka Kolasa
- Department of Histology and Embryology, Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland; (D.S.-K.); (A.K.); (B.W.)
| | - Barbara Wiszniewska
- Department of Histology and Embryology, Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland; (D.S.-K.); (A.K.); (B.W.)
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Raj P, Wu L, Arora S, Bhatt R, Zuo Y, Fang Z, Verdoold R, Koch T, Gu L, Barman I. Engineering vascularized skin-mimetic phantom for non-invasive Raman spectroscopy. SENSORS AND ACTUATORS. B, CHEMICAL 2024; 404:135240. [PMID: 38524639 PMCID: PMC10956615 DOI: 10.1016/j.snb.2023.135240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Recent advances in Raman spectroscopy have shown great potential for non-invasive analyte sensing, but the lack of a standardized optical phantom for these measurements has hindered further progress. While many research groups have developed optical phantoms that mimic bulk optical absorption and scattering, these materials typically have strong Raman scattering, making it difficult to distinguish metabolite signals. As a result, solid tissue phantoms for spectroscopy have been limited to highly scattering tissues such as bones and calcifications, and metabolite sensing has been primarily performed using liquid tissue phantoms. To address this issue, we have developed a layered skin-mimetic phantom that can support metabolite sensing through Raman spectroscopy. Our approach incorporates millifluidic vasculature that mimics blood vessels to allow for diffusion akin to metabolite diffusion in the skin. Furthermore, our skin phantoms are mechanically mimetic, providing an ideal model for development of minimally invasive optical techniques. By providing a standardized platform for measuring metabolites, our approach has the potential to facilitate critical developments in spectroscopic techniques and improve our understanding of metabolite dynamics in vivo.
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Affiliation(s)
- Piyush Raj
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Lintong Wu
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Saransh Arora
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Raj Bhatt
- Department of Biology, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Yi Zuo
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Zhiwei Fang
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, USA
| | | | - Tanja Koch
- ams OSRAM Innovation and Engineering, Germany
| | - Luo Gu
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Ishan Barman
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21218, USA
- Department of Radiology & Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD 21218, USA
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Maan M, Goyal H, Joshi S, Barman P, Sharma S, Kumar R, Saini A. DP1, a multifaceted synthetic peptide: Mechanism of action, activity and clinical potential. Life Sci 2024; 340:122458. [PMID: 38266815 DOI: 10.1016/j.lfs.2024.122458] [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: 07/28/2023] [Revised: 01/19/2024] [Accepted: 01/20/2024] [Indexed: 01/26/2024]
Abstract
AIMS Microbial infections remain a leading cause of mortality worldwide, with Staphylococcus aureus (S. aureus) being a prominent etiological agent, responsible for causing persistent bacterial infections in humans. It is a nosocomial, opportunistic pathogen, capable to propagate within the bloodstream and withstand therapeutic interventions. In the current study, a novel, indigenously designed synthetic antimicrobial peptide (sAMP) has been evaluated for its antimicrobial potential to inhibit the growth and proliferation of S. aureus. MAIN METHODS The sAMP, designed peptide (DP1) was evaluated for its minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against a panel of pathogenic bacterial strains. Membrane mechanistic studies were performed by measuring membrane conductivity via dielectric spectroscopy and visualizing changes in bacterial membrane structure through field emission scanning electron microscopy (FE-SEM). Further, DP1 was tested for its in vivo antimicrobial potential in an S. aureus-induced systemic infection model. KEY FINDINGS The results indicated that DP1 has the potential to inhibit the growth and proliferation of a broad spectrum of Gram-positive, Gram-negative and multidrug-resistant (MDR) bacterial strains. Strong bactericidal effect attributed to change in electrical conductivity of the bacterial cells leading to membrane disruption was observed through dielectric spectroscopy and FE-SEM micrographs. Further, in the in vivo murine systemic infection study, 50 % reduction in S. aureus bioburden was observed within 1 day of the administration of DP1. SIGNIFICANCE The results indicate that DP1 is a multifaceted peptide with potent bactericidal, antioxidant and therapeutic properties. It holds significance as a novel drug candidate to effectively combat S. aureus-mediated systemic infections.
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Affiliation(s)
- Mayank Maan
- Department of Biophysics, Panjab University, Chandigarh, U.T. 160014, India
| | - Hemant Goyal
- Department of Biophysics, Panjab University, Chandigarh, U.T. 160014, India
| | - Shubhi Joshi
- Department of Biophysics, Panjab University, Chandigarh, U.T. 160014, India
| | - Panchali Barman
- Institute of Forensic Science and Criminology (UIEAST), Panjab University, Chandigarh, U.T. 160014, India
| | - Sheetal Sharma
- Department of Biophysics, Panjab University, Chandigarh, U.T. 160014, India
| | - Rajesh Kumar
- Department of Physics, Panjab University, Chandigarh, U.T. 160014, India
| | - Avneet Saini
- Department of Biophysics, Panjab University, Chandigarh, U.T. 160014, India.
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Tonomura S, Uchiyama K, Nakayama T, Mitsuno R, Kojima D, Hama EY, Nagasaka T, Nishimura ES, Kusahana E, Takahashi R, Yoshimoto N, Yamaguchi S, Morimoto K, Yoshida T, Hayashi K, Kanda T, Washida N, Itoh H. Clinical significance of serum urea-to-creatinine ratio in patients undergoing peritoneal dialysis. Ther Apher Dial 2023; 27:1103-1112. [PMID: 37349909 DOI: 10.1111/1744-9987.14030] [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: 03/30/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/24/2023]
Abstract
INTRODUCTION We aimed to determine the correlation between the serum urea-to-creatinine ratio and residual kidney function (RKF) in patients undergoing peritoneal dialysis (PD), as well as its predictive value for PD-related outcomes. METHODS This study included a cross-sectional study to assess the correlation between serum urea-to-creatinine ratio and RKF in 50 patients on PD and a retrospective cohort study to assess the association between serum urea-to-creatinine ratio and PD-related outcomes in 122 patients who initiated PD. RESULTS Serum urea-to-creatinine ratios had significant positive correlations with renal Kt/V and creatinine clearance values (r = 0.60, p < 0.001 and r = 0.61, p < 0.001, respectively). Additionally, serum urea-to-creatinine ratio was significantly associated with a lower risk of transfer to hemodialysis or PD/hemodialysis hybrid therapy (hazard ratio: 0.84, 95% confidence interval: 0.75-0.95). CONCLUSION The serum urea-to-creatinine ratio can be an indicator of RKF and a prognostic factor in patients undergoing PD.
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Affiliation(s)
- Shun Tonomura
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Kiyotaka Uchiyama
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
- Department of Nephrology, International University of Health and Welfare Narita Hospital, Chiba, Japan
| | - Takashin Nakayama
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Ryunosuke Mitsuno
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Daiki Kojima
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Eriko Yoshida Hama
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Tomoki Nagasaka
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Erina Sugita Nishimura
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Ei Kusahana
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Rina Takahashi
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Norifumi Yoshimoto
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Shintaro Yamaguchi
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Kohkichi Morimoto
- Apheresis and Dialysis Center, Keio University School of Medicine, Tokyo, Japan
| | - Tadashi Yoshida
- Apheresis and Dialysis Center, Keio University School of Medicine, Tokyo, Japan
| | - Kaori Hayashi
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Takeshi Kanda
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Washida
- Department of Nephrology, International University of Health and Welfare Narita Hospital, Chiba, Japan
| | - Hiroshi Itoh
- Department of Endocrinology, Metabolism and Nephrology, Keio University School of Medicine, Tokyo, Japan
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Bashir AAM, Olaniyi KS. Butyrate alleviates renal inflammation and fibrosis in a rat model of polycystic ovarian syndrome by suppression of SDF-1. BMC Pharmacol Toxicol 2023; 24:48. [PMID: 37789355 PMCID: PMC10548736 DOI: 10.1186/s40360-023-00692-9] [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: 06/25/2023] [Accepted: 09/27/2023] [Indexed: 10/05/2023] Open
Abstract
BACKGROUND Polycystic ovarian syndrome (PCOS) is a multifactorial condition with metabolic-related complications, such as diabetic nephropathy and chronic renal disorder, which are the leading cause of renal transplant globally. Protective effects of histone deacetylase (HDAC) inhibitors (HDACi) have been documented in metabolic-linked pathologies. Nonetheless, the current study investigated the restorative role of HDACi, butyrate in experimental PCOS-induced renal disorder. MATERIALS AND METHODS Female Wistar rats (8-week-old) were divided into groups; control, butyrate-treated, letrozole and letrozole + butyrate-treated groups. To induce PCOS, 1 mg/kg of letrozole was given (oral gavage) for 21 days. After confirmation of PCOS, 200 mg/kg of butyrate (oral gavage) was administered for 6 weeks. RESULTS Rats with PCOS revealed disruption in glucose homeostasis (hyperinsulinemia and impaired glucose tolerance and insulin resistance) and presented with the phenotypes of PCOS (hyperandrogenism, multiple ovarian cysts and elevated LH/FSH ratio). Increased plasma and renal triglycerides and inflammatory (TNF-α/SDF-1/NF-κB) markers were observed with elevated levels of TGFβ-1, renal lipid peroxidation and redox imbalance (GGT, GSH, HIF-1α). Interestingly, animals with PCOS reported increased body weight as well as renal mass. Whereas, heightened levels of plasma urea, creatinine and creatine kinase indicating renal dysfunction, characterized by renal apoptosis (Caspase-6) and increased HDAC2 levels. Notwithstanding, administration of butyrate averted the alterations. CONCLUSION The present investigation demonstrates that PCOS declines renal function, which is accompanied by renal inflammation, apoptosis and fibrosis. The study further suggests that butyrate, an HDAC2i restores renal function by suppressing renal SDF-1 with subsequent attenuation of renal inflammation, apoptosis and fibrosis.
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Affiliation(s)
- Al-Amin M Bashir
- Cardio/Endo-metabolic and Microbiome Research Unit, Department of Physiology, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, 360101, Nigeria
| | - Kehinde S Olaniyi
- Cardio/Endo-metabolic and Microbiome Research Unit, Department of Physiology, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, 360101, Nigeria.
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Caggiano G, Stasi A, Franzin R, Fiorentino M, Cimmarusti MT, Deleonardis A, Palieri R, Pontrelli P, Gesualdo L. Fecal Microbiota Transplantation in Reducing Uremic Toxins Accumulation in Kidney Disease: Current Understanding and Future Perspectives. Toxins (Basel) 2023; 15:toxins15020115. [PMID: 36828429 PMCID: PMC9965504 DOI: 10.3390/toxins15020115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/21/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
During the past decades, the gut microbiome emerged as a key player in kidney disease. Dysbiosis-related uremic toxins together with pro-inflammatory mediators are the main factors in a deteriorating kidney function. The toxicity of uremic compounds has been well-documented in a plethora of pathophysiological mechanisms in kidney disease, such as cardiovascular injury (CVI), metabolic dysfunction, and inflammation. Accumulating data on the detrimental effect of uremic solutes in kidney disease supported the development of many strategies to restore eubiosis. Fecal microbiota transplantation (FMT) spread as an encouraging treatment for different dysbiosis-associated disorders. In this scenario, flourishing studies indicate that fecal transplantation could represent a novel treatment to reduce the uremic toxins accumulation. Here, we present the state-of-the-art concerning the application of FMT on kidney disease to restore eubiosis and reverse the retention of uremic toxins.
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