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Chen Z, Li X, Sun X, Xiao S, Chen T, Ren L, Liu N. STING1-accelerated vascular smooth muscle cell senescence-associated vascular calcification in diabetes is ameliorated by oleoylethanolamide via improved mitochondrial DNA oxidative damage. Free Radic Biol Med 2024; 222:437-455. [PMID: 38889865 DOI: 10.1016/j.freeradbiomed.2024.06.010] [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: 05/05/2024] [Revised: 06/12/2024] [Accepted: 06/15/2024] [Indexed: 06/20/2024]
Abstract
Vascular calcification is a prevalent hallmark of cardiovascular risk in elderly and diabetic individuals. Senescent vascular smooth muscle cells (VSMCs) participate in calcification; however, the associated underlying mechanisms remain unknown. Aberrant activation of the cytosolic DNA sensing adaptor stimulator of interferon gene 1 (STING1) caused by cytosolic DNA, particularly that leaked from damaged mitochondria, is a catalyst for aging-related diseases. Although oleoylethanolamide (OEA) is an endogenous bioactive lipid mediator with lipid overload-associated vasoprotective effects, its benefit in diabetic vascular calcification remains uncharacterized. This study focused on the role of STING1 in mitochondrial dysfunction-mediated calcification and premature VMSC senescence in diabetes and the effects of OEA on these pathological processes. In diabetic in vivo rat/mouse aorta calcification models and an in vitro VSMC calcification model induced by Nε-carboxymethyl-lysine (CML), senescence levels, STING1 signaling activation, and mitochondrial damage markers were significantly augmented; however, these alterations were markedly alleviated by OEA, partially in a nuclear factor erythroid 2-related factor 2 (Nrf2)-dependent manner, and similar anti-calcification and senescence effects were observed in STING1-knockout mice and STING1-knockdown VSMCs. Mechanistically, mitochondrial DNA (mtDNA) damage was aggravated by CML in a reactive oxygen species-dependent manner, followed by mtDNA leakage into the cytosol, contributing to VSMC senescence-associated calcification via STING1 pathway activation. OEA treatment significantly attenuated the aforementioned cytotoxic effects of CML by enhancing cellular antioxidant capacity through the maintenance of Nrf2 translocation to the nucleus. Collectively, targeting STING1, a newly defined VSMC senescence regulator, contributes to anti-vascular calcification effects.
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Affiliation(s)
- Zhengdong Chen
- Department of Cardiology, Zhongda Hospital, Southeast University School of Medicine, 87 Dingjiaqiao, Nanjing, 210009, PR China
| | - Xiaoxue Li
- Department of Cardiology, Zhongda Hospital, Southeast University School of Medicine, 87 Dingjiaqiao, Nanjing, 210009, PR China
| | - Xuejiao Sun
- Department of Cardiology, Zhongda Hospital, Southeast University School of Medicine, 87 Dingjiaqiao, Nanjing, 210009, PR China; Nanjing First Hospital, Nanjing Medical University, Nanjing, 210000, PR China
| | - Shengjue Xiao
- Department of Cardiology, Zhongda Hospital, Southeast University School of Medicine, 87 Dingjiaqiao, Nanjing, 210009, PR China
| | - Tian Chen
- Department of Cardiology, Zhongda Hospital, Southeast University School of Medicine, 87 Dingjiaqiao, Nanjing, 210009, PR China
| | - Liqun Ren
- Department of Geriatrics, Zhongda Hospital, Southeast University School of Medicine, 87 Dingjiaqiao, Nanjing, 210009, PR China
| | - Naifeng Liu
- Department of Cardiology, Zhongda Hospital, Southeast University School of Medicine, 87 Dingjiaqiao, Nanjing, 210009, PR China.
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Zhang M, Li H, Ma J, Yang C, Yang Y, Zhao B, Tie Y, Wang S. Effects of Zinc Combined with Metformin on Zinc Homeostasis, Blood-Epididymal Barrier, and Epididymal Absorption in Male Diabetic Mice. Biol Trace Elem Res 2024:10.1007/s12011-024-04171-y. [PMID: 38589680 DOI: 10.1007/s12011-024-04171-y] [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: 02/07/2024] [Accepted: 04/01/2024] [Indexed: 04/10/2024]
Abstract
Diabetes increases the likelihood of germ cell damage, hypogonadism, and male infertility. Diabetes leads to lower zinc (Zn) levels, an important micronutrient for maintaining male fertility, and zinc deficiency can lead to decreased male fertility through multiple mechanisms. The aim of this study was to investigate the effect of combined metformin and zinc administration on epididymis in diabetic mice; 10 of 50 male mice were randomly selected as the control group (group C), and the remaining 40 mice were randomly divided into untreated diabetes group (group D), diabetes + zinc group (group Z), diabetes + metformin group (group M), and diabetes + metformin + zinc group (group ZM) with 10 mice each. Diabetic mice in group Z received oral zinc (10 mg/kg) once daily for 4 weeks; diabetic mice in group M received oral metformin (200 mg/kg) once daily for 4 weeks; diabetic mice in group ZM received oral metformin and zinc once daily for 4 weeks; and groups C and D received the same amount of sterile water by gavage. Overnight fasted mice were sacrificed, and blood samples, mouse epididymides, and sperm were collected for further experiments. In group D, fasting blood glucose and insulin resistance index increased significantly, semen quality, serum insulin, and testosterone decreased, and epididymal structure was disordered. In group D, epididymal tissue zinc, free zinc ions in the caput, and cauda of epididymis and zinc transporter (ZnT2) decreased significantly, while ZIP12, metallothionein (MT), and metal transcription factor (MTF1) increased significantly. In addition, the expressions of blood-epididymal barrier (BEB)-related molecules (including ZO-1 β-catenin and N-cadherin) and aquaporins (AQPs, including AQP3, AQP9, and AQP11) in the epididymis of mice in group D were significantly decreased. In addition, compared with groups D, Z, and M, in the ZM group, the expression of BEB-related molecules (including ZO-1, β-catenin, and N-cadherin) and aquaporins (AQP3, AQP9, and AQP11) in epididymis tissue were significantly increased, and sperm motility and serum testosterone were significantly increased. It was concluded that male diabetic mice have a disturbed epididymal structure and decreased semen quality by causing an imbalance in epididymal zinc homeostasis, BEB, and impaired absorptive function. The combination of zinc and metformin is an effective and safe alternative treatment and provides additional benefits over metformin alone.
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Affiliation(s)
- Menghui Zhang
- Graduate School, North China University of Science and Technology, Tangshan, 063210, China
| | - Huanhuan Li
- Hebei Key Laboratory of Reproductive Medicine, Hebei Reproductive Health Hospital, Shijiazhuang, 050071, China
| | - Jing Ma
- Hebei Key Laboratory of Reproductive Medicine, Hebei Reproductive Health Hospital, Shijiazhuang, 050071, China
| | - Chaoju Yang
- Department of Laboratory, Hebei Provincial People's Hospital, Shijiazhuang, 050051, China
| | - Yang Yang
- Hebei Key Laboratory of Reproductive Medicine, Hebei Reproductive Health Hospital, Shijiazhuang, 050071, China
| | - Bangrong Zhao
- Hebei Key Laboratory of Reproductive Medicine, Hebei Reproductive Health Hospital, Shijiazhuang, 050071, China
| | - Yanqing Tie
- Graduate School, North China University of Science and Technology, Tangshan, 063210, China.
- Department of Laboratory, Hebei Provincial People's Hospital, Shijiazhuang, 050051, China.
| | - Shusong Wang
- Hebei Key Laboratory of Reproductive Medicine, Hebei Reproductive Health Hospital, Shijiazhuang, 050071, China.
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Vilela WR, Ramalho LS, Bechara LRG, Cabral-Costa JV, Serna JDC, Kowaltowski AJ, Xavier GF, Ferreira JCB, de Bem AF. Metabolic dysfunction induced by HFD + L-NAME preferentially affects hippocampal mitochondria, impacting spatial memory in rats. J Bioenerg Biomembr 2024; 56:87-99. [PMID: 38374292 DOI: 10.1007/s10863-024-10005-2] [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: 08/24/2023] [Accepted: 01/31/2024] [Indexed: 02/21/2024]
Abstract
High-fat diet-induced metabolic changes are not restricted to the onset of cardiovascular diseases, but also include effects on brain functions related to learning and memory. This study aimed to evaluate mitochondrial markers and function, as well as cognitive function, in a rat model of metabolic dysfunction. Eight-week-old male Wistar rats were subjected to either a control diet or a two-hit protocol combining a high fat diet (HFD) with the nitric oxide synthase inhibitor L-NAME in the drinking water. HFD plus L-NAME induced obesity, hypertension, and increased serum cholesterol. These rats exhibited bioenergetic dysfunction in the hippocampus, characterized by decreased oxygen (O2) consumption related to ATP production, with no changes in H2O2 production. Furthermore, OPA1 protein expression was upregulated in the hippocampus of HFD + L-NAME rats, with no alterations in other morphology-related proteins. Consistently, HFD + L-NAME rats showed disruption of performance in the Morris Water Maze Reference Memory test. The neocortex did not exhibit either bioenergetic changes or alterations in H2O2 production. Calcium uptake rate and retention capacity in the neocortex of HFD + L-NAME rats were not altered. Our results indicate that hippocampal mitochondrial bioenergetic function is disturbed in rats exposed to a HFD plus L-NAME, thus disrupting spatial learning, whereas neocortical function remains unaffected.
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Affiliation(s)
- Wembley R Vilela
- Department of Physiological Sciences, University of Brasilia, Federal District, Brasília, DF, 70910-900, Brazil
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, 05508-000, Brazil
- Department of Experimental Medical Science, Faculty of Medicine, Lund University, Lund, 22362, Sweden
| | - Lisley S Ramalho
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Luiz R G Bechara
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, 05508-000, Brazil
| | - João V Cabral-Costa
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Julian D C Serna
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Alicia J Kowaltowski
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Gilberto F Xavier
- Department of Physiology, Biosciences Institute, University of São Paulo, São Paulo, SP, 05508- 090, Brazil
| | - Julio C B Ferreira
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Andreza Fabro de Bem
- Department of Physiological Sciences, University of Brasilia, Federal District, Brasília, DF, 70910-900, Brazil.
- Brazilian National Institute of Science and Technology on Neuroimmunomodulation, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, 21040-360, Brazil.
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, 581 85, Sweden.
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Bolger MW, Tekkey T, Kohn DH. Peripheral canalicular branching is decreased in streptozotocin-induced diabetes and correlates with decreased whole-bone ultimate load and perilacunar elastic work. JBMR Plus 2024; 8:ziad017. [PMID: 38505218 PMCID: PMC10945723 DOI: 10.1093/jbmrpl/ziad017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 12/01/2023] [Accepted: 12/06/2023] [Indexed: 03/21/2024] Open
Abstract
Osteocytes, the most abundant cell type in bone, play a crucial role in mechanosensation and signaling for bone formation and resorption. These cells reside within a complex lacuno-canalicular network (OLCN). Osteocyte signaling is reduced under diabetic conditions, and both type 1 and type 2 diabetes lead to reduced bone turnover, perturbed bone composition, and increased fracture risk. We hypothesized that this reduced bone turnover, and altered bone composition with diabetes is associated with reduced OLCN architecture and connectivity. This study aimed to elucidate: (1) the sequence of OLCN changes with diabetes related to bone turnover and (2) whether changes to the OLCN are associated with tissue composition and mechanical properties. Twelve- to fourteen-week-old male C57BL/6 mice were administered streptozotocin at 50 mg/kg for 5 consecutive days to induce hyperglycemia, sacrificed at baseline (BL), or after being diabetic for 3 (D3) and 7 (D7) wk with age-matched (C3, C7) controls (n = 10-12 per group). Mineralized femoral sections were infiltrated with rhodamine, imaged with confocal microscopy, then the OLCN morphology and topology were characterized and correlated against bone histomorphometry, as well as local and whole-bone mechanics and composition. D7 mice exhibited a lower number of peripheral branches relative to C7. The total number of canalicular intersections (nodes) was lower in D3 and D7 relative to BL (P < 0.05 for all), and a reduced bone formation rate (BFR) was observed at D7 vs C7. The number of nodes explained only 15% of BFR, but 45% of Ct.BV/TV, and 31% of ultimate load. The number of branches explained 30% and 22% of the elastic work at the perilacunar and intracortical region, respectively. Collectively, the reduction in OLCN architecture and association of OLCN measures with bone turnover, mechanics, and composition highlights the relevance of the osteocyte and the OLCN and a potential therapeutic target for treating diabetic skeletal fragility.
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Affiliation(s)
- Morgan W Bolger
- Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI 48109, United States
| | - Tara Tekkey
- Department of Chemistry, College of Literature, Science and the Arts, University of Michigan, Ann Arbor, MI 48109, United States
| | - David H Kohn
- Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI 48109, United States
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, United States
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5
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Zhang F, Lin JJ, Tian HN, Wang J. Effect of exercise on improving myocardial mitochondrial function in decreasing diabetic cardiomyopathy. Exp Physiol 2024; 109:190-201. [PMID: 37845840 PMCID: PMC10988701 DOI: 10.1113/ep091309] [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: 05/22/2023] [Accepted: 09/11/2023] [Indexed: 10/18/2023]
Abstract
Diabetic cardiomyopathy (DCM) is a significant cause of heart failure in patients with diabetes, and its pathogenesis is closely related to myocardial mitochondrial injury and functional disability. Studies have shown that the development of diabetic cardiomyopathy is related to disorders in mitochondrial metabolic substrates, changes in mitochondrial dynamics, an imbalance in mitochondrial Ca2+ regulation, defects in the regulation of microRNAs, and mitochondrial oxidative stress. Physical activity may play a role in resistance to the development of diabetic cardiomyopathy by improving myocardial mitochondrial biogenesis, the level of autophagy and dynamic changes in fusion and division; enhancing the ability to cope with oxidative stress; and optimising the metabolic substrates of the myocardium. This paper puts forward a new idea for further understanding the specific mitochondrial mechanism of the occurrence and development of diabetic cardiomyopathy and clarifying the role of exercise-mediated myocardial mitochondrial changes in the prevention and treatment of diabetic cardiomyopathy. This is expected to provide a new theoretical basis for exercise to reduce diabetic cardiomyopathy symptoms.
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Affiliation(s)
- Feng Zhang
- Sports Physiology DepartmentBeijing Sport UniversityBeijingChina
| | - Jian jian Lin
- PE Teaching and Research OfficeUniversity of International RelationshipBeijingChina
| | - Hao nan Tian
- Sports Physiology DepartmentBeijing Sport UniversityBeijingChina
| | - Jun Wang
- Sports Physiology DepartmentBeijing Sport UniversityBeijingChina
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Shao X, Tian Y, Liu J, Yan Z, Ding Y, Hao X, Wang D, Shen L, Luo E, Guo XE, Luo P, Luo W, Cai J, Jing D. Rescuing SERCA2 pump deficiency improves bone mechano-responsiveness in type 2 diabetes by shaping osteocyte calcium dynamics. Nat Commun 2024; 15:890. [PMID: 38291059 PMCID: PMC10828510 DOI: 10.1038/s41467-024-45023-6] [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: 11/17/2022] [Accepted: 01/12/2024] [Indexed: 02/01/2024] Open
Abstract
Type 2 diabetes (T2D)-related fragility fractures represent an increasingly tough medical challenge, and the current treatment options are limited. Mechanical loading is essential for maintaining bone integrity, although bone mechano-responsiveness in T2D remains poorly characterized. Herein, we report that exogenous cyclic loading-induced improvements in bone architecture and strength are compromised in both genetically spontaneous and experimentally-induced T2D mice. T2D-induced reduction in bone mechano-responsiveness is directly associated with the weakened Ca2+ oscillatory dynamics of osteocytes, although not those of osteoblasts, which is dependent on PPARα-mediated specific reduction in osteocytic SERCA2 pump expression. Treatment with the SERCA2 agonist istaroxime was demonstrated to improve T2D bone mechano-responsiveness by rescuing osteocyte Ca2+ dynamics and the associated regulation of osteoblasts and osteoclasts. Moreover, T2D-induced deterioration of bone mechano-responsiveness is blunted in mice with osteocytic SERCA2 overexpression. Collectively, our study provides mechanistic insights into T2D-mediated deterioration of bone mechano-responsiveness and identifies a promising countermeasure against T2D-associated fragility fractures.
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Affiliation(s)
- Xi Shao
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Yulan Tian
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Juan Liu
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Zedong Yan
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Yuanjun Ding
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Xiaoxia Hao
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Dan Wang
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Liangliang Shen
- The State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China
| | - Erping Luo
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - X Edward Guo
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Peng Luo
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
| | - Wenjing Luo
- The Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Fourth Military Medical University, Xi'an, China.
| | - Jing Cai
- College of Basic Medicine, Shaanxi University of Chinese Medicine, Xianyang, China.
| | - Da Jing
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
- The Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Fourth Military Medical University, Xi'an, China.
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7
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Zhou SM, Yao XM, Cheng Y, Xing YJ, Sun Y, Hua Q, Wan SJ, Meng XJ. Metformin enhances METTL14-Mediated m6A methylation to alleviate NIT-1 cells apoptosis induced by hydrogen peroxide. Heliyon 2024; 10:e24432. [PMID: 38312705 PMCID: PMC10835167 DOI: 10.1016/j.heliyon.2024.e24432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 02/06/2024] Open
Abstract
Injuries to pancreatic β-cells are intricately linked to the onset of diabetes mellitus (DM). Metformin (Met), one of the most widely prescribed medications for diabetes and metabolic disorders, has been extensively studied for its antioxidant, anti-aging, anti-glycation, and hepatoprotective activities. N6-methyladenosine (m6A) plays a crucial role in the regulation of β-cell growth and development, and its dysregulation is associated with metabolic disorders. This study aimed to elucidate the mechanistic basis of m6A involvement in the protective effects of Met against oxidative damage in pancreatic β-cells. Hydrogen peroxide (H2O2) was employed to induce β-cell damage. Remarkably, Met treatment effectively increased methylation levels and the expression of the methyltransferase METTL14, subsequently reducing H2O2-induced apoptosis. Knocking down METTL14 expression using siRNA significantly compromised cell viability. Conversely, targeted overexpression of METTL14 specifically in β-cells substantially enhanced their capacity to withstand H2O2-induced stress. Molecular evidence suggests that the anti-apoptotic properties of Met may be mediated through Bcl-xL and Bim proteins. In conclusion, our findings indicate that Met induces METTL14-mediated alterations in m6A methylation levels, thereby shielding β-cells from apoptosis and oxidative damage induced by oxidative stress.
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Affiliation(s)
- Si-Min Zhou
- Department of Endocrinology, The First Affiliated Hospital of Wannan Medical College, Wannan Medical College, Wuhu, 241002, China
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, Wannan Medical College, Wuhu, 241002, China
| | - Xin-Ming Yao
- Department of Endocrinology, The First Affiliated Hospital of Wannan Medical College, Wannan Medical College, Wuhu, 241002, China
| | - Yi Cheng
- Department of Endocrinology, The First Affiliated Hospital of Wannan Medical College, Wannan Medical College, Wuhu, 241002, China
| | - Yu-Jie Xing
- Department of Endocrinology, The First Affiliated Hospital of Wannan Medical College, Wannan Medical College, Wuhu, 241002, China
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, Wannan Medical College, Wuhu, 241002, China
| | - Yue Sun
- Department of Endocrinology, The First Affiliated Hospital of Wannan Medical College, Wannan Medical College, Wuhu, 241002, China
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, Wannan Medical College, Wuhu, 241002, China
| | - Qiang Hua
- Department of Endocrinology, The First Affiliated Hospital of Wannan Medical College, Wannan Medical College, Wuhu, 241002, China
| | - Shu-Jun Wan
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, Wannan Medical College, Wuhu, 241002, China
| | - Xiang-Jian Meng
- Department of Endocrinology, The First Affiliated Hospital of Wannan Medical College, Wannan Medical College, Wuhu, 241002, China
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Baghel K, Azam Z, Srivastava R, Gupta N, Kango N. Withaferin-A attenuates diabetes mellitus induced male reproductive dysfunction mediated by ERα in brain and testes of Swiss albino mice. Sci Rep 2023; 13:17625. [PMID: 37848702 PMCID: PMC10582261 DOI: 10.1038/s41598-023-44904-y] [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: 07/14/2023] [Accepted: 10/13/2023] [Indexed: 10/19/2023] Open
Abstract
Diabetes mellitus (DM) is a chronic metabolic disease, characterized by persistent hyperglycemia resulting from diminished insulin secretion or insulin resistance. The present study evaluated the ameliorative effects of Withaferin-A (WA) on DM-induced reproductive dysfunction in mice. For the same, mice were intraperitoneally injected with Streptozotocin (STZ), (40 mg/kg/day) for 5 consecutive days to induce DM. Mice were then treated with WA (8 mg/kg/day) in normal and diabetic conditions (STZ + WA). Next, blood glucose levels, oral glucose tolerance, intraperitoneal insulin tolerance, oxidative stress and reproductive parameters were estimated. For reproductive performance, immunofluorescent localization of gonadotropin-releasing hormone (GnRH-I) and estrogen receptor alpha (ERα) in the preoptic area and paraventricular nucleus region of hypothalamus and ERα in testes was performed. STZ-induced diabetes triggered reproductive dysfunctions as mediated by low GnRH-I and ERα in the brain and ERα in the testes along with declined testosterone and estradiol levels. Treatment with WA significantly reduced the blood glucose levels and enhanced glucose clearance accompanied by reduced oxidative stress in the brain, pancreas and testes as indicated by the low levels of H2O2 and MDA in diabetic mice treated with WA (STZ + WA). This study reports, for the first time, that WA can efficiently ameliorate DM-induced reproductive dysfunctions by enhancing endogenous testosterone, estrogen and increased GnRH-I and ERα in the brain and ERα in the testes of DM-induced male mice.
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Affiliation(s)
- Kalpana Baghel
- Department of Microbiology, School of Biological Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
- Department of Zoology, School of Biological Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
| | - Zaffar Azam
- Department of Zoology, School of Biological Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
| | - Rashmi Srivastava
- Department of Zoology, University of Allahabad, Prayagraj, UP, 211002, India
| | - Neelima Gupta
- Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India
| | - Naveen Kango
- Department of Microbiology, School of Biological Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP, 470003, India.
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9
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Nath M, Bhattacharjee K, Choudhury Y. The antidiabetic drug pioglitazone ameliorates betel-nut-induced carcinogenesis in mice by restoring normal lipid metabolism, reducing oxidative stress, and inducing apoptosis. J Cancer Res Ther 2023; 19:1967-1974. [PMID: 38376305 DOI: 10.4103/jcrt.jcrt_844_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/20/2022] [Indexed: 02/21/2024]
Abstract
CONTEXT Oral administration (2 mg mL-1) of aqueous extract of betel nut (AEBN) for 24 weeks induced oncogenic alterations in the liver of female Swiss Albino mice concomitant with aberrant lipid metabolism, overactivation of Akt/mTOR signaling, and loss of apoptosis. AIM This study was designed to investigate the potential of repurposing the antidiabetic drug pioglitazone for alleviating AEBN-induced carcinogenesis. METHODS Sera of animals were evaluated for lipid profile and free fatty acid levels. Liver tissues were investigated for oxidative stress, histopathology, and expression of proteins involved in lipid metabolism and oncogenesis by western blotting. Apoptosis was determined using TUNEL assay. RESULTS Coadministration of pioglitazone (10 mg kg-1 b.w) with AEBN for 8 weeks restored normal lipid profile and AMPK/ACC signaling, reduced FASN and HMGCR expressions and oxidative stress, and actively induced Akt/mTOR-mediated apoptosis in the liver. CONCLUSIONS Pioglitazone can effectively alleviate AEBN-induced carcinogenesis in mice.
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Affiliation(s)
- Moumita Nath
- Department of Biotechnology, Assam University, Silchar, Assam, India
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10
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Brishti MA, Raghavan S, Lamar K, Singh UP, Collier DM, Leo MD. Diabetic Endothelial Cell Glycogen Synthase Kinase 3β Activation Induces VCAM1 Ectodomain Shedding. Int J Mol Sci 2023; 24:14105. [PMID: 37762417 PMCID: PMC10531890 DOI: 10.3390/ijms241814105] [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: 08/11/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Soluble cell adhesion molecules (sCAMs) are secreted ectodomain fragments of surface adhesion molecules, ICAM1 and VCAM1. sCAMs have diverse immune functions beyond their primary function, impacting immune cell recruitment and activation. Elevated sVCAM1 levels have been found to be associated with poor cardiovascular disease (CVD) outcomes, supporting VCAM1's role as a potential diagnostic marker and therapeutic target. Inhibiting sVCAM1's release or its interaction with immune cells could offer cardioprotection in conditions such as diabetes. Membrane-bound surface adhesion molecules are widely expressed in a wide variety of cell types with higher expression in endothelial cells (ECs). Still, the source of sCAMs in the circulation is not clear. Hypothesizing that endothelial cells (ECs) could be a potential source of sCAMs, this study investigated whether dysfunctional EC signaling mechanisms during diabetes cause VCAM1 ectodomain shedding. Our results from samples from an inducible diabetic mouse model revealed increased sVCAM1 plasma levels in diabetes. Protein analysis indicated upregulated VCAM1 expression and metalloproteases ADAM10 and ADAM17 in diabetic ECs. ADAMs are known for proteolytic cleavage of adhesion molecules, contributing to inflammation. GSK3β, implicated in EC VCAM1 expression, was found to be activated in diabetic ECs. GSK3β activation in control ECs increased ADAM10/17 and VCAM1. A GSK3β inhibitor reduced active GSK3β and VCAM1 ectodomain shedding. These findings suggest diabetic ECs with elevated GSK3β activity led to VCAM1 upregulation and ADAM10/17-mediated sVCAM1 shedding. This mechanism underscores the potential therapeutic role of GSK3β inhibition in reducing the levels of circulating sVCAM1. The complex roles of sCAMs extend well beyond CVD. Thus, unraveling the intricate involvement of sCAMs in the initiation and progression of vascular disease, particularly in diabetes, holds significant therapeutic potential.
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Affiliation(s)
| | | | | | | | | | - M. Dennis Leo
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA; (M.A.B.)
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11
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Gupta A, Bhat HR, Singh UP. Discovery of imeglimin-inspired novel 1,3,5-triazine derivatives as antidiabetic agents in streptozotocin-induced diabetes in Wistar rats via inhibition of DPP-4. RSC Med Chem 2023; 14:1512-1536. [PMID: 37593577 PMCID: PMC10429709 DOI: 10.1039/d3md00085k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 05/21/2023] [Indexed: 08/19/2023] Open
Abstract
Novel 1,3,5-triazine derivatives bearing oxazine have been synthesized and tested for their ability to inhibit a panel of dipeptidyl peptidase (DPP)-4, 8, and 9 enzymes. In a comparative inhibitory assay, the molecules showed potent inhibition of DPP-4 ranging from IC50 of 4.2 ± 0.30-260.5 ± 0.42 nM, with no activity against DPP-8 and DPP-9. Among the tested series, compound 8c demonstrated the strongest DPP-4 inhibitory activity with an IC50 of 4.2 ± 0.30 nM. It also showed the greatest binding affinity during docking studies with DPP-4 with a docking score of -8.956 and a glide energy of -78.546 kcal mol-1 and was found oriented in the S1 and S2 pockets of the DPP-4 active site, which is composed of the catalytic triad Ser 630, Asp 710, and His 740. The in vivo pharmacological assay revealed that compound 8c in a dose-dependent manner improved the insulin level, body weight, antioxidants, and HDL, and reduced the levels of blood glucose, LDL, and VLDL in streptozotocin-induced diabetes in Wistar rats. Our study demonstrated the discovery and development of novel 1,3,5-triazine derivatives bearing oxazine as a novel class of anti-diabetic agents via inhibition of DPP-4.
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Affiliation(s)
- Akanksha Gupta
- Drug Design and Discovery Laboratory, Department of Pharmaceutical Sciences, Shalom Institute of Health and Allied Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences Prayagraj Uttar Pradesh India 211007
- United Institute of Pharmacy Prayagraj Uttar Pradesh India 211008
| | - Hans Raj Bhat
- Department of Pharmaceutical Sciences, Dibrugarh University Dibrugarh Assam India 786004
| | - Udaya Pratap Singh
- Drug Design and Discovery Laboratory, Department of Pharmaceutical Sciences, Shalom Institute of Health and Allied Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences Prayagraj Uttar Pradesh India 211007
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12
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Bai L, Zhang X, Li X, Wang S, Zhang Y, Xu G. Impact of a Novel Hydrogel with Injectable Platelet-Rich Fibrin in Diabetic Wound Healing. J Diabetes Res 2023; 2023:7532637. [PMID: 37546354 PMCID: PMC10403326 DOI: 10.1155/2023/7532637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/14/2023] [Accepted: 06/18/2023] [Indexed: 08/08/2023] Open
Abstract
Diabetic wounds are serious complications caused by diabetes mellitus (DM), which are further exacerbated by angiogenesis disorders and prolonged inflammation. Injectable platelet-rich fibrin (i-PRF) is rich in growth factors (GFs) and has been used for the repair and regeneration of diabetic wounds; however, direct application of i-PRF has certain disadvantages, including the instability of the bioactive molecules. Sericin hydrogel, fabricated by silkworm-derived sericin, is a biocompatible material that has anti-inflammatory and healing-promoting properties. Therefore, in this study, we developed a novel hydrogel (named sericin/i-PRF hydrogel) using a simple one-step activation method. The in vitro studies showed that the rapid injectability of the sericin/i-PRF hydrogel allows it to adapt to the irregular shape of the wounds. Additionally, sericin hydrogel could prolong the release of i-PRF-derived bioactive GFs in the sericin/i-PRF hydrogel. Furthermore, sericin/i-PRF hydrogel effectively repaired diabetic wounds, promoted angiogenesis, and reduced inflammation levels in the diabetic wounds of nude mice. These results demonstrate that the sericin/i-PRF hydrogel is a promising agent for diabetic wound healing.
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Affiliation(s)
- Limin Bai
- Department of Burn and Plastic Surgery, Northern Jiangsu People's Hospital, Yangzhou 225001, China
| | - Xiaowei Zhang
- Department of Burn and Plastic Surgery, Northern Jiangsu People's Hospital, Yangzhou 225001, China
| | - Xiaomei Li
- Department of Burn and Plastic Surgery, Northern Jiangsu People's Hospital, Yangzhou 225001, China
| | - Susu Wang
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212100, China
| | - Yeshun Zhang
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212100, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang Jiangsu 212100, China
| | - Gang Xu
- Department of Burn and Plastic Surgery, Northern Jiangsu People's Hospital, Yangzhou 225001, China
- Clinical Medical College, Yangzhou University, Yangzhou 225009, China
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13
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Gupta A, Bhat HR, Singh UP. Discovery of novel 1,3,5-triazine derivatives as an antidiabetic agent in Wistar rats via inhibition of DPP-4. Future Med Chem 2023; 15:829-852. [PMID: 37307171 DOI: 10.4155/fmc-2022-0312] [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: 12/24/2022] [Accepted: 05/10/2023] [Indexed: 06/14/2023] Open
Abstract
Aim: To develop imeglimin-inspired novel 1,3,5-triazine derivatives as antidiabetic agents. Materials & methods: These derivatives were synthesized and tested against DPP enzymes. Compound 8c was tested for in vivo antidiabetic activity in streptozotocin-induced diabetes in Wistar rats by estimating various biochemical parameters. Docking experiments were also performed. Results: Compound 8c was identified as a selective and potent DPP-4 inhibitor. It was proficiently docked into the catalytic triad of Ser 630, Asp 710 and His740 in S1 and S2 pockets of DPP-4. In experimental animals, it also showed dose-dependent improvement in blood glucose, blood insulin, bodyweight, lipid profile and kidney and liver antioxidant profiles. Conclusion: This study demonstrated the discovery of imeglimin-inspired novel 1,3,5-triazines as a potent antidiabetic agent.
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Affiliation(s)
- Akanksha Gupta
- Department of Pharmaceutical Sciences, Drug Design & Discovery Laboratory, Shalom Institute of Health and Allied Sciences (SIHAS), Sam Higginbottom University of Agriculture, Technology and Sciences (SHUATS), Prayagraj, Uttar Pradesh, 211007, India
- United Institute of Pharmacy, Prayagraj, Uttar Pradesh, 211008, India
| | - Hans Raj Bhat
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh Assam, 786004, India
| | - Udaya Pratap Singh
- Department of Pharmaceutical Sciences, Drug Design & Discovery Laboratory, Shalom Institute of Health and Allied Sciences (SIHAS), Sam Higginbottom University of Agriculture, Technology and Sciences (SHUATS), Prayagraj, Uttar Pradesh, 211007, India
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14
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Balogh DB, Wagner LJ, Fekete A. An Overview of the Cardioprotective Effects of Novel Antidiabetic Classes: Focus on Inflammation, Oxidative Stress, and Fibrosis. Int J Mol Sci 2023; 24:7789. [PMID: 37175496 PMCID: PMC10177821 DOI: 10.3390/ijms24097789] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
Metabolic diseases, particularly diabetes mellitus (DM), are significant global public health concerns. Despite the widespread use of standard-of-care therapies, cardiovascular disease (CVD) remains the leading cause of death among diabetic patients. Early and evidence-based interventions to reduce CVD are urgently needed. Large clinical trials have recently shown that sodium-glucose cotransporter-2 inhibitors (SGLT2i) and glucagon-like peptide-1 receptor agonists (GLP-1RA) ameliorate adverse cardiorenal outcomes in patients with type 2 DM. These quite unexpected positive results represent a paradigm shift in type 2 DM management, from the sole importance of glycemic control to the simultaneous improvement of cardiovascular outcomes. Moreover, SGLT2i is also found to be cardio- and nephroprotective in non-diabetic patients. Several mechanisms, which may be potentially independent or at least separate from the reduction in blood glucose levels, have already been identified behind the beneficial effect of these drugs. However, there is still much to be understood regarding the exact pathomechanisms. This review provides an overview of the current literature and sheds light on the modes of action of novel antidiabetic drugs, focusing on inflammation, oxidative stress, and fibrosis.
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Affiliation(s)
- Dora Bianka Balogh
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1085 Budapest, Hungary
- MTA-SE Lendület “Momentum” Diabetes Research Group, 1083 Budapest, Hungary
| | - Laszlo Jozsef Wagner
- Department of Surgery, Transplantation, and Gastroenterology, Semmelweis University, 1085 Budapest, Hungary
| | - Andrea Fekete
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1085 Budapest, Hungary
- MTA-SE Lendület “Momentum” Diabetes Research Group, 1083 Budapest, Hungary
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15
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Vilela WR, Bellozi PMQ, Picolo VL, Cavadas BN, Marques KVS, Pereira LTG, Guirao ARDY, Amato AA, Magalhães KG, Mortari MR, Medei EH, Goulart JT, de Bem AF. Early-life metabolic dysfunction impairs cognition and mitochondrial function in mice. J Nutr Biochem 2023; 117:109352. [PMID: 37061011 DOI: 10.1016/j.jnutbio.2023.109352] [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: 10/17/2022] [Revised: 03/10/2023] [Accepted: 04/10/2023] [Indexed: 04/17/2023]
Abstract
The impact of overnutrition early in life is not restricted to the onset of cardiovascular and metabolic diseases, but also affects critical brain functions related to cognition. This study aimed to evaluate the relationship between peripheral metabolic and bioenergetic changes induced by a two-hit protocol and their impact on cognitive function in juvenile mice. Three-week-old male C57BL/6 mice received a high-fat diet (HFD) or control diet for 7 weeks, associated with 2 low doses of streptozotocin (STZ) or vehicle. Despite the absence of obesity, HFD+STZ impaired glucose metabolism and induced a trend towards cholesterol increase. The two-hit protocol impaired recognition and spatial memories in juvenile mice, without inducing a depressive-like behavior. HFD+STZ mice presented increased immunoreactivity for GFAP and a trend towards a decrease in NeuN in the hippocampus. The treatment caused a bioenergetic impairment in the hippocampus, characterized by a decrease in both O2 consumption related to ATP production and in the maximum respiratory capacity. The thermogenic capacity of brown adipose tissue was impaired by the two-hit protocol, here verified through the absence of a decrease in O2 consumption after uncoupled protein-1 inhibition and an increase in the reserve respiratory capacity. Impaired mitochondrial function was also observed in the liver of HFD+STZ juvenile mice, but not in their heart. These results indicate that exposure to HFD+STZ early in life has a detrimental impact on the bioenergetic and mitochondrial function of tissues with metabolic and thermogenic activities, which is likely related to hippocampal metabolic changes and cognitive impairment.
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Affiliation(s)
- Wembley Rodrigues Vilela
- Laboratory of Bioenergetics and Metabolism, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil
| | - Paula Maria Quaglio Bellozi
- Laboratory of Bioenergetics and Metabolism, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil
| | - Victor Luna Picolo
- Laboratory of Bioenergetics and Metabolism, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil
| | - Bruna Neves Cavadas
- Laboratory of Bioenergetics and Metabolism, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil
| | - Keila Valentina Silva Marques
- Laboratory of Bioenergetics and Metabolism, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil
| | | | - Ainhoa Rodriguez de Yurre Guirao
- Laboratory of Cardioimunology, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Angélica Amorim Amato
- Laboratory of Molecular Pharmacology, School of Health Sciences, University of Brasilia, Brazil
| | - Kelly Grace Magalhães
- Laboratory of Immunology and Inflammation, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil
| | - Márcia Renata Mortari
- Laboratory of Neuropharmacology, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil
| | - Emiliano Horacio Medei
- Laboratory of Cardioimunology, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jair Trapé Goulart
- Laboratory of Bioenergetics and Metabolism, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil.
| | - Andreza Fabro de Bem
- Laboratory of Bioenergetics and Metabolism, Department of Physiological Sciences, Biology Institute, University of Brasilia, Federal District, Brazil; Center of Social and Affective Neuroscience, Department of Clinical and Experimental Medicine, Faculty of Medicine and Health, Linköping University, Linköping, Sweden.
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16
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Li J, Liu Y, Lai W, Song L, Deng J, Li C, Jiang S. MicroRNA-126 regulates macrophage polarization to prevent the resorption of alveolar bone in diabetic periodontitis. Arch Oral Biol 2023; 150:105686. [PMID: 36947912 DOI: 10.1016/j.archoralbio.2023.105686] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
OBJECTIVE This study aims to investigate the effects of microRNA-126 (miR-126) on the macrophage polarization in vitro and alveolar bone resorption in vivo. DESIGN The relationship between miR-126 and MEK/ERK kinase 2 (MEKK2) was confirmed by dual-luciferase reporter assay. Real-time quantitative polymerase chain reaction, enzyme-linked immunosorbent assay or Western blot was used to detect the changes of miR-126, inducible nitric oxide synthase (iNOS), arginase-1 (Arg-1), tumor necrosis factor (TNF)-α, interleukin (IL)-10, MEKK2 and MEKK2-related pathways: mitogen-activated protein kinase (MAPK) and nuclear factor kappa-B (NF-κB) in RAW264.7 macrophages challenged with Porphyromonas gingivalis (P. gingivalis) lipopolysaccharide (LPS) and/or high glucose and/or miR-126 mimic. In mice with diabetic periodontitis, the expressions of iNOS and Arg-1 in gingiva, and alveolar bone level were detected after miR-126 mimic injection. RESULTS MiR-126 could directly bind with MEKK2 3'-untranslated region (UTR). MEKK2, phosphorylation of NF-κB and MAPK signaling proteins, TNF-α and iNOS increased (P < 0.05), while miR-126, Arg-1 and IL-10 were inhibited (P < 0.05) in macrophage challenged with high glucose and/or P. gingivalis LPS, however, miR-126 mimic reversed these effects (P < 0.05). The expressions of iNOS in gingiva and alveolar bone resorption were elevated (P < 0.05), the expression of Arg-1 in gingiva decreased (P < 0.05) in mice with diabetic periodontitis, which could be inhibited by miR-126 mimic. CONCLUSIONS miR-126 might prevent alveolar bone resorption in diabetic periodontitis and inhibit macrophage M1 polarization via regulating MEKK2 signaling pathway.
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Affiliation(s)
- Jiajun Li
- School of Dentistry, Tianjin Medical University, 300070 Tianjin, People's Republic of China
| | - Yue Liu
- School of Stomatology, Zunyi Medical University, Zunyi 563000, Guizhou, People's Republic of China; Stomatological Center, Peking University Shenzhen Hospital, Shenzhen 5180036, Guangdong, People's Republic of China; Guangdong Provincial High-level Clinical Key Specialty, Shenzhen 5180036, Guangdong, People's Republic of China; Guangdong Province Engineering Research Center of Oral Disease Diagnosis and Treatment, Shenzhen 5180036, Guangdong, People's Republic of China
| | - Wen Lai
- School of Dentistry, Tianjin Medical University, 300070 Tianjin, People's Republic of China
| | - Liting Song
- School of Dentistry, Tianjin Medical University, 300070 Tianjin, People's Republic of China
| | - Jiayin Deng
- School of Dentistry, Tianjin Medical University, 300070 Tianjin, People's Republic of China
| | - Changyi Li
- School of Dentistry, Tianjin Medical University, 300070 Tianjin, People's Republic of China.
| | - Shaoyun Jiang
- Stomatological Center, Peking University Shenzhen Hospital, Shenzhen 5180036, Guangdong, People's Republic of China; Guangdong Provincial High-level Clinical Key Specialty, Shenzhen 5180036, Guangdong, People's Republic of China; Guangdong Province Engineering Research Center of Oral Disease Diagnosis and Treatment, Shenzhen 5180036, Guangdong, People's Republic of China.
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17
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Luo W, He M, Luo Q, Li Y. Proteome-wide analysis of lysine β-hydroxybutyrylation in the myocardium of diabetic rat model with cardiomyopathy. Front Cardiovasc Med 2023; 9:1066822. [PMID: 36698951 PMCID: PMC9868477 DOI: 10.3389/fcvm.2022.1066822] [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: 10/11/2022] [Accepted: 12/13/2022] [Indexed: 01/10/2023] Open
Abstract
Lysine ß-hydroxybutyrylation (kbhb), a novel modification of lysine residues with the ß-hydroxybuty group, is associated with ketone metabolism in numerous species. However, its potential role in diabetes, especially in diabetic cardiomyopathy (DCM), remains largely unexplored. In this study, using affinity enrichment and liquid chromatography-mass spectrometry (LC-MS/MS) method, we quantitatively analyze the kbhb residues on heart tissues of a DCM model rat. A total of 3,520 kbhb sites in 1,089 proteins were identified in this study. Further analysis showed that 336 kbhb sites in 143 proteins were differentially expressed between the heart tissues of DCM and wild-type rats. Among them, 284 kbhb sites in 96 proteins were upregulated, while 52 kbhb sites in 47 proteins were downregulated. Bioinformatic analysis of the proteomic results revealed that these kbhb-modified proteins were widely distributed in various components and involved in a wide range of cellular functions and biological processes (BPs). Functional analysis showed that the kbhb-modified proteins were involved in the tricarboxylic acid cycle, oxidative phosphorylation, and propanoate metabolism. Our findings demonstrated how kbhb is related to many metabolic pathways and is mainly involved in energy metabolism. These results provide the first global investigation of the kbhb profile in DCM progression and can be an essential resource to explore DCM's pathogenesis further.
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Affiliation(s)
- Weiguang Luo
- Department of Clinical Laboratory, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Mei He
- Henan Medical Key Laboratory of Arrhythmia, The 7th People’s Hospital of Zhengzhou, Zhengzhou Cardiovascular Hospital, Zhengzhou, China
| | - Qizhi Luo
- Department of Immunology, Basic Medical School of Central South University, Changsha, Hunan, China
| | - Yi Li
- Department of Clinical Laboratory, Henan Provincial People’s Hospital, Henan University People’s Hospital, Zhengzhou, Henan, China,*Correspondence: Yi Li,
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18
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Wang G, Liu Z, Liang D, Yu J, Wang T, Zhou F, Chen W. Aqueous extract of Polygonatum sibiricum ameliorates glucose and lipid metabolism via PI3K/AKT signaling pathway in high-fat diet and streptozotocin-induced diabetic mice. J Food Biochem 2022; 46:e14402. [PMID: 36226981 DOI: 10.1111/jfbc.14402] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/29/2022] [Accepted: 09/01/2022] [Indexed: 01/13/2023]
Abstract
This study was aimed to investigate the protective effects and elucidate the mechanisms of aqueous extract of Polygonatum sibiricum (PSAE) on glucolipid metabolism during the development of type 2 diabetes (T2DM). C57BL/6J mice fed with 60% high-fat diet (HFD) combined with streptozotocin (STZ) injection to simulate the occurrence process of T2DM. PSAE was administered daily by oral gavage during the experiment. The results demonstrated the protective effects in mice supplied with PSAE on the indicators of glycolipid metabolism (body weight, fasting blood glucose, the area under the curve, hemoglobin A1c, serum total cholesterol, triglyceride, low-density lipoprotein cholesterol, and liver triglyceride) compared with the Model group mice. Furthermore, PSAE can ameliorate insulin resistance in mice liver by activating phosphoinositide-3-kinase/protein kinase B (PI3K/AKT) pathway signaling. Overall, our research suggested that PSAE can effectively regulate glucose and lipid metabolism during the development of T2DM as an alternative functional food. PRACTICAL APPLICATIONS: Diabetes is a chronic metabolic disease which is characterized by abnormal metabolism of glucose and lipoid and nowadays it has been one of the most representative chronic systemic progressive metabolic diseases. Polygonatum sibiricum is a traditional Chinese galenical and it also can be used as food ingredients. PSAE is the aqueous extract of Polygonatum sibiricum. 34% polysaccharides were detected in PSAE and it can effectively regulate glucose and lipid metabolism during the development of T2DM in mice. Thus, PSAE might be a promising functional food for regulation of glucolipid metabolism and the study also provides a theoretical basis for the development and application of food about Polygonatum sibiricum.
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Affiliation(s)
- Guangjun Wang
- School of Public Health, Anhui Medical University, Hefei, China
| | - Zhengxiang Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Di Liang
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Jinchuan Yu
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Ting Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Fuding Zhou
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
| | - Wenjun Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, China
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19
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Jin L, Geng L, Ying L, Shu L, Ye K, Yang R, Liu Y, Wang Y, Cai Y, Jiang X, Wang Q, Yan X, Liao B, Liu J, Duan F, Sweeney G, Woo CWH, Wang Y, Xia Z, Lian Q, Xu A. FGF21-Sirtuin 3 Axis Confers the Protective Effects of Exercise Against Diabetic Cardiomyopathy by Governing Mitochondrial Integrity. Circulation 2022; 146:1537-1557. [PMID: 36134579 DOI: 10.1161/circulationaha.122.059631] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND Exercise is an effective nonpharmacological strategy to alleviate diabetic cardiomyopathy (DCM) through poorly defined mechanisms. FGF21 (fibroblast growth factor 21), a peptide hormone with pleiotropic benefits on cardiometabolic homeostasis, has been identified as an exercise responsive factor. This study aims to investigate whether FGF21 signaling mediates the benefits of exercise on DCM, and if so, to elucidate the underlying mechanisms. METHODS The global or hepatocyte-specific FGF21 knockout mice, cardiomyocyte-selective β-klotho (the obligatory co-receptor for FGF21) knockout mice, and their wild-type littermates were subjected to high-fat diet feeding and injection of streptozotocin to induce DCM, followed by a 6-week exercise intervention and assessment of cardiac functions. Cardiac mitochondrial structure and function were assessed by electron microscopy, enzymatic assays, and measurements of fatty acid oxidation and ATP production. Human induced pluripotent stem cell-derived cardiomyocytes were used to investigate the receptor and postreceptor signaling pathways conferring the protective effects of FGF21 against toxic lipids-induced mitochondrial dysfunction. RESULTS Treadmill exercise markedly induced cardiac expression of β-klotho and significantly attenuated diabetes-induced cardiac dysfunction in wild-type mice, accompanied by reduced mitochondrial damage and increased activities of mitochondrial enzymes in hearts. However, such cardioprotective benefits of exercise were largely abrogated in mice with global or hepatocyte-selective ablation of FGF21, or cardiomyocyte-specific deletion of β-klotho. Mechanistically, exercise enhanced the cardiac actions of FGF21 to induce the expression of the mitochondrial deacetylase SIRT3 by AMPK-evoked phosphorylation of FOXO3, thereby reversing diabetes-induced hyperacetylation and functional impairments of a cluster of mitochondrial enzymes. FGF21 prevented toxic lipids-induced mitochondrial dysfunction and oxidative stress by induction of the AMPK/FOXO3/SIRT3 signaling axis in human induced pluripotent stem cell-derived cardiomyocytes. Adeno-associated virus-mediated restoration of cardiac SIRT3 expression was sufficient to restore the responsiveness of diabetic FGF21 knockout mice to exercise in amelioration of mitochondrial dysfunction and DCM. CONCLUSIONS The FGF21-SIRT3 axis mediates the protective effects of exercise against DCM by preserving mitochondrial integrity and represents a potential therapeutic target for DCM. REGISTRATION URL: https://www. CLINICALTRIALS gov; Unique identifier: NCT03240978.
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Affiliation(s)
- Leigang Jin
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Pharmacology and Pharmacy (L.J., L.Y., B.L., C.W.H.W., Yu Wang, A.X.), University of Hong Kong, China
| | - Leiluo Geng
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China
| | - Lei Ying
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Pharmacology and Pharmacy (L.J., L.Y., B.L., C.W.H.W., Yu Wang, A.X.), University of Hong Kong, China
| | - Lingling Shu
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China
| | - Kevin Ye
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, Canada (K.Y.)
| | - Ranyao Yang
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China
| | - Yan Liu
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China
| | - Yao Wang
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China
| | - Yin Cai
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Health Technology and Informatics, Hong Kong Polytechnic University, China (Y.C.)
| | - Xue Jiang
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China
| | - Qin Wang
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China
| | - Xingqun Yan
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China
| | - Boya Liao
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Pharmacology and Pharmacy (L.J., L.Y., B.L., C.W.H.W., Yu Wang, A.X.), University of Hong Kong, China
| | - Jie Liu
- Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China.,Cord Blood Bank, Guangzhou Institute of Eugenics and Perinatology, Women and Children's Medical Center, Guangzhou Medical University, China (J.L., F.D., Q.L.)
| | - Fuyu Duan
- Cord Blood Bank, Guangzhou Institute of Eugenics and Perinatology, Women and Children's Medical Center, Guangzhou Medical University, China (J.L., F.D., Q.L.)
| | - Gary Sweeney
- Department of Biology, York University, Toronto, Canada (G.S.)
| | - Connie Wai Hong Woo
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Pharmacology and Pharmacy (L.J., L.Y., B.L., C.W.H.W., Yu Wang, A.X.), University of Hong Kong, China
| | - Yu Wang
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Pharmacology and Pharmacy (L.J., L.Y., B.L., C.W.H.W., Yu Wang, A.X.), University of Hong Kong, China
| | - Zhengyuan Xia
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China (Z.X.)
| | - Qizhou Lian
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China.,Cord Blood Bank, Guangzhou Institute of Eugenics and Perinatology, Women and Children's Medical Center, Guangzhou Medical University, China (J.L., F.D., Q.L.)
| | - Aimin Xu
- State Key Laboratory of Pharmaceutical Biotechnology (L.J., L.G., L.Y., L.S., R.Y., Y.L., Yao Wang, Y.C., X.J., Q.W., X.Y., B.L., C.W.H.W., Yu Wang, Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Medicine (L.J., L.G., L.S., R.Y., Y.L., Yao Wang, X.J., Q.W., X.Y., J.L., Z.X., Q.L., A.X.), University of Hong Kong, China.,Department of Pharmacology and Pharmacy (L.J., L.Y., B.L., C.W.H.W., Yu Wang, A.X.), University of Hong Kong, China
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20
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Jiang Y, Feng C, Shi Y, Kou X, Le G. Eugenol improves high-fat diet/streptomycin-induced type 2 diabetes mellitus (T2DM) mice muscle dysfunction by alleviating inflammation and increasing muscle glucose uptake. Front Nutr 2022; 9:1039753. [PMID: 36424928 PMCID: PMC9681568 DOI: 10.3389/fnut.2022.1039753] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/03/2022] [Indexed: 08/10/2023] Open
Abstract
Eugenol has been used in dietary interventions for metabolic diseases such as diabetes and obesity. However, the protective effect of eugenol on muscle function in diabetes is unclear. In this study, a high-fat diet (HFD) with a streptozocin (STZ) injection induced type II diabetes mellitus in a mouse model. Oral eugenol lowered blood glucose and insulin resistance of HFD/STZ-treated mice. Eugenol reduced HFD/STZ-induced muscle inflammation and prevented muscle weakness and atrophy. Eugenol administration significantly increased GLUT4 translocation and AMPK phosphorylation in skeletal muscle, thereby enhancing glucose uptake. By silencing the transient receptor potential vanilloid channel 1 (TRPV1) gene in C2C12 myotube cells, eugenol was found to increase intracellular Ca2+ levels through TRPV1, which then activated calmodulin-dependent protein kinase-2 (CaMKK2) and affected AMPK protein phosphorylation. In conclusion, eugenol is a potential nutraceutical for preventing high-glucose-induced muscle impairments, which could be explained by its mediating effects on glucose absorption and inflammatory responses in the muscle.
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Affiliation(s)
- Yuge Jiang
- Center for Food Nutrition and Functional Food Engineering, School of Food Science and Technology, Jiangnan University, Wuxi, China
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Chuanxing Feng
- Center for Food Nutrition and Functional Food Engineering, School of Food Science and Technology, Jiangnan University, Wuxi, China
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yonghui Shi
- Center for Food Nutrition and Functional Food Engineering, School of Food Science and Technology, Jiangnan University, Wuxi, China
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xingran Kou
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Guowei Le
- Center for Food Nutrition and Functional Food Engineering, School of Food Science and Technology, Jiangnan University, Wuxi, China
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
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21
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The ubiquitination of CKIP-1 mediated by Src aggravates diabetic renal fibrosis (original article). Biochem Pharmacol 2022; 206:115339. [DOI: 10.1016/j.bcp.2022.115339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
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22
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Effect of Chronic Treatment with Uridine on Cardiac Mitochondrial Dysfunction in the C57BL/6 Mouse Model of High-Fat Diet–Streptozotocin-Induced Diabetes. Int J Mol Sci 2022; 23:ijms231810633. [PMID: 36142532 PMCID: PMC9502122 DOI: 10.3390/ijms231810633] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/06/2022] [Accepted: 09/09/2022] [Indexed: 11/19/2022] Open
Abstract
Long-term hyperglycemia in diabetes mellitus is associated with complex damage to cardiomyocytes and the development of mitochondrial dysfunction in the myocardium. Uridine, a pyrimidine nucleoside, plays an important role in cellular metabolism and is used to improve cardiac function. Herein, the antidiabetic potential of uridine (30 mg/kg/day for 21 days, i.p.) and its effect on mitochondrial homeostasis in the heart tissue were examined in a high-fat diet–streptozotocin-induced model of diabetes in C57BL/6 mice. We found that chronic administration of uridine to diabetic mice normalized plasma glucose and triglyceride levels and the heart weight/body weight ratio and increased the rate of glucose utilization during the intraperitoneal glucose tolerance test. Analysis of TEM revealed that uridine prevented diabetes-induced ultrastructural abnormalities in mitochondria and sarcomeres in ventricular cardiomyocytes. In diabetic heart tissue, the mRNA level of Ppargc1a decreased and Drp1 and Parkin gene expression increased, suggesting the disturbances of mitochondrial biogenesis, fission, and mitophagy, respectively. Uridine treatment of diabetic mice restored the mRNA level of Ppargc1a and enhanced Pink1 gene expression, which may indicate an increase in the intensity of mitochondrial biogenesis and mitophagy, and as a consequence, mitochondrial turnover. Uridine also reduced oxidative phosphorylation dysfunction and suppressed lipid peroxidation, but it had no significant effect on the impaired calcium retention capacity and potassium transport in the heart mitochondria of diabetic mice. Altogether, these findings suggest that, along with its hypoglycemic effect, uridine has a protective action against diabetes-mediated functional and structural damage to cardiac mitochondria and disruption of mitochondrial quality-control systems in the diabetic heart.
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23
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Zhang Q, Xiao X, Li M, Yu M, Ping F. Bailing capsule (Cordyceps sinensis) ameliorates renal triglyceride accumulation through the PPARα pathway in diabetic rats. Front Pharmacol 2022; 13:915592. [PMID: 36091833 PMCID: PMC9453879 DOI: 10.3389/fphar.2022.915592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Diabetic nephropathy (DN) is a severe diabetic complication of the kidney and is the main cause of end-stage kidney disease worldwide. Cordyceps sinensis (C. sinensis) is not only a traditional Chinese medicine (TCM) but also a healthy food. In China, C. sinensis has been widely used to treat various kidney diseases. Bailing Capsule, which active ingredient is C. sinensis, is approved to treat kidney disease, respiratory disease, and immune disease. However, its underlying mechanism in DN remains unclear. The purpose of the present study was to investigate the underlying mechanism of Bailing Capsule on kidney in diabetic rats. The DN model was established by streptozotocin (STZ) injection. Low and high doses of Bailing Capsule were orally administrated for 12 weeks after diabetes induction. Renal function was evaluated by serum creatinine, blood urea nitrogen, 24-h urinary protein, and urinary albumin. Mesangial matrix expansion and renal fibrosis were measured using histopathology staining. We found that the disorder of renal function and pathology in DN rats was significantly modified by Bailing Capsule treatment. Consistently, Bailing Capsule markedly alleviated DN rat glomerulosclerosis, tubulointerstitial injury and renal fibrosis as shown by pathological staining. Moreover, Bailing Capsule significantly reduced the kidney triglyceride content and renal lipid droplet formation in DN rats. The renal transcriptome revealed that Bailing Capsule-treated kidneys had 498 upregulated genes and 448 downregulated genes. These differentially expressed genes were enriched in the peroxisome proliferator activated receptor (PPAR) pathway and fatty acid metabolism function ontology. mRNA and protein expression analyses revealed substantial enhancement of the lipolysis pathway and inhibition of lipogenesis in Bailing Capsule-treated rat kidneys compared to DN rats. Bailing Capsule activated the expression of PPARα, ACOX1 (acyl-CoA oxidase 1), and SCD (stearoyl-CoA desaturase) in diabetic nephropathy while suppressing the expression of FASN (fatty acid synthase). In conclusion, Bailing Capsule could attenuate renal triglyceride accumulation in diabetic rats by moderating PPARα pathway.
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24
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Rev-erbs agonist SR9009 alleviates ischemia-reperfusion injury by heightening endogenous cardioprotection at onset of type-2 diabetes in rats: Down-regulating ferritinophagy/ferroptosis signaling. Biomed Pharmacother 2022; 154:113595. [PMID: 36029539 DOI: 10.1016/j.biopha.2022.113595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/17/2022] [Accepted: 08/19/2022] [Indexed: 01/13/2023] Open
Abstract
The complex progression of type-2 diabetes (T2DM) results in inconsistent findings on myocardial susceptibility to ischemia-reperfusion (IR). IR injuries in multiple organs interconnect with ferroptosis. Targeting Rev-erbs might limit ferroptosis, with increasing attention turning to the application of circadian medicine against IR injuries. However, whether the Rev-erbs agonist SR9009 could mitigate diabetic IR injury remains unknown. Here, we investigated the susceptibility to IR at onset of T2DM in rats and its potential association between SR9009 and ferritinophagy/ferroptosis signaling. Onset of T2DM model was induced with a high-fat diet and the intraperitoneal injection of a low dose of streptozotocin. Myocardial IR model was established as well. Rats' general characteristics, cardiac function, glycolipid profiles, serum biochemistry, apoptosis index (AI) and morphological histology were observed and analyzed. Western blot and immunofluorescence (IF) were employed to evaluate the expression of ferritinophagy/ferroptosis signaling and its co-localization. Glycolipid profiles and cardiac diastolic function were significantly impaired in diabetic rats. CK-MB, AI levels and ferritinophagy/ferroptosis-related proteins expression decreased towards myocardial IR in diabetic rats compared to non-diabetic rats'. The ferroptosis inducer Erastin up-regulated SOD, MDA, and AI levels, as well as the expression of ferritinophagy/ferroptosis-related proteins in diabetic rats towards IR. Treatment with SR9009 down-regulated the degree of myocardial injury and ferritinophagy/ferroptosis-related proteins expression compared to diabetic rats treated with or without Erastin. Onset of T2DM activated endogenous cardioprotection against the susceptibility to myocardial IR injury, and SR9009 exogenously enhanced this endogenous mechanism and alleviated myocardial IR injury at onset of T2DM by down-regulating ferritinophagy/ferroptosis signaling.
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25
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Wei YD, Chen XX, Yang LJ, Gao XR, Xia QR, Qi CC, Ge JF. Resveratrol ameliorates learning and memory impairments induced by bilateral hippocampal injection of streptozotocin in mice. Neurochem Int 2022; 159:105385. [PMID: 35843421 DOI: 10.1016/j.neuint.2022.105385] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 06/15/2022] [Accepted: 06/27/2022] [Indexed: 01/10/2023]
Abstract
Resveratrol (RES) is a polyphenol with diverse beneficial pharmacological activities, and our previous results have demonstrated its neuroprotective potential. The purpose of this study was to investigate the therapeutic effect of RES in Alzheimer's disease (AD)-like behavioral dysfunction induced by streptozotocin (STZ) and explore it's potential mechanism of action. STZ was microinjected bilaterally into the dorsal hippocampus of C57BL/6J mice at a dose of 3 mg/kg, and RES was administered intragastrically at a dose of 25 mg/kg for 5 weeks. Neurobehavioral performance was observed, and serum concentrations of insulin and Nesfatin-1 were measured. Moreover, the protein expression of amyloid beta 1-42 (Aβ1-42), Tau, phosphorylated Tau (p-Tau) (Ser396), synaptic ras GTPase activation protein (SynGAP), postsynaptic density protein 95 (PSD95), synapsin-1, synaptogomin-1, and key molecules of the Wnt/β-catenin signaling pathway in the hippocampus and prefrontal cortex (PFC) were assessed. Finally, pathological damage to hippocampal tissue was examined by Nissl and immunofluorescence staining. The results showed that compared with the controls, bilateral hippocampal microinjections of STZ induced task-specific learning and memory impairments, as indicated by the disadvantaged performances in the novel object recognition test (NOR) and Morris water maze (MWM), but not the contextual fear conditioning test (CFC). Treatment with RES could improve these behavioral disadvantages. The serum concentrations of insulin and Nesfatin-1 in the model group were remarkably higher than those of the control group. In addition, protein expression of Aβ1-42, Tau, and p-Tau (Ser396) was increased but expression of SynGAP, PSD95, brain-derived neurotrophic factor (BDNF), and p-GSK-3β/GSK-3β were decreased in the hippocampus. Although the protein expression of BDNF and SynGAP was also markedly decreased in the PFC of the model mice, there was no significant difference among groups in the protein expression of PSD95, BDNF, synapsin-1, synaptogomin-1, and p-GSK-3β/GSK-3β. RES (25 mg/kg) reversed the enhanced insulin level, the abnormal protein expression of Aβ1-42, Tau, and p-Tau (Ser396) in the hippocampus and PFC, and the hippocampal protein expression of SynGAP, PSD95 and BDNF. In addition, RES reversed the STZ-induced decrease in the number of Nissl bodies and the increase in fluorescence intensity of IBA1 in the hippocampal CA1 region. These findings indicate that RES could ameliorate STZ-induced AD-like neuropathological injuries, the mechanism of which could be partly related to its regulation of BDNF expression and synaptic plasticity-associated proteins in the hippocampus.
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Affiliation(s)
- Ya-Dong Wei
- School of Pharmacy, Anhui Medical University, Hefei, China; Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Anhui Institute of Innovative Drugs, Hefei, China; The Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Medical University, Hefei, China
| | - Xing-Xing Chen
- School of Pharmacy, Anhui Medical University, Hefei, China; Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Anhui Institute of Innovative Drugs, Hefei, China; The Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Medical University, Hefei, China
| | - Long-Jun Yang
- Chaohu Clinical Medical College, Anhui Medical University, Hefei, China
| | - Xin-Ran Gao
- School of Pharmacy, Anhui Medical University, Hefei, China; Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Anhui Institute of Innovative Drugs, Hefei, China; The Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Medical University, Hefei, China
| | - Qing-Rong Xia
- Department of Pharmacy, Hefei Fourth People's Hospital, Hefei, China; Psychopharmacology Research Laboratory, Anhui Mental Health Center, Hefei, China; Clinical Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China
| | - Cong-Cong Qi
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institute of Brain Science, And Department of Laboratory Animal Science, Fudan University, Shanghai, China.
| | - Jin-Fang Ge
- School of Pharmacy, Anhui Medical University, Hefei, China; Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Anhui Institute of Innovative Drugs, Hefei, China; The Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Medical University, Hefei, China.
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26
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Liu H, Zhang Z, Li J, Liu W, Warda M, Cui B, Abd El-Aty AM. Oligosaccharides derived from Lycium barbarum ameliorate glycolipid metabolism and modulate the gut microbiota community and the faecal metabolites in a type 2 diabetes mouse model: metabolomic bioinformatic analysis. Food Funct 2022; 13:5416-5429. [PMID: 35475434 DOI: 10.1039/d1fo02667d] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Herein, we assessed the effects of Lycium barbarum oligosaccharides (LBO) on the intestinal microenvironment of a type 2 diabetes (T2D) mouse model through gut microbiome and metabolomics analysis. We set high (300 mg kg-1), medium (200 mg kg-1), and low (100 mg kg-1) doses of LBO for intervention once a day for 4 weeks. The results showed that the intervention effect of the medium-dose group was the most significant. It reduced the symptoms of hyperglycemia, inflammation, insulin resistance, and lipid accumulation in the T2D mouse model. It restored the structure of damaged tissues and cells, such as the pancreas, liver, and kidneys. LBO increased the relative abundance of beneficial bacteria, such as Lactobacillus, Bacteroides, Prevotella, and Akkermansia, and maintained intestinal barrier integrity. The faecal metabolic map showed that the contents of glycogen amino acids, such as proline, serine, and leucine, increased. The contents of cholic, capric, and dodecanoic acid decreased. In summary, we may suggest that LBO can be used as a prebiotic for treating T2D.
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Affiliation(s)
- Hao Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China. .,School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - Zheng Zhang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China. .,School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - Jianpeng Li
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China. .,School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - Wei Liu
- Yucheng People's Hospital, Dezhou, 251200, China
| | - Mohamad Warda
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, Giza-12211, Egypt
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China. .,School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - A M Abd El-Aty
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China. .,Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza-12211, Egypt.,Department of Medical Pharmacology, Medical Faculty, Ataturk University, Erzurum 25240, Turkey
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27
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Ren Z, Okyere SK, Xie L, Wen J, Wang J, Chen Z, Ni X, Deng J, Hu Y. Oral Administration of Bacillus toyonensis Strain SAU-20 Improves Insulin Resistance and Ameliorates Hepatic Steatosis in Type 2 Diabetic Mice. Front Immunol 2022; 13:837237. [PMID: 35242140 PMCID: PMC8887768 DOI: 10.3389/fimmu.2022.837237] [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: 12/16/2021] [Accepted: 01/26/2022] [Indexed: 12/30/2022] Open
Abstract
In this study, the ameliorative effects of Bacillus toyonensis-SAU-20 (B. toyo SAU-20), a new probiotic strain isolated and identified by our laboratory from Ageratina adenophora, on the development of insulin resistance and hepatic steatosis in type 2 diabetic (T2DM) mice was investigated. Thirty Specific-pathogen free Kunming (SPFKM) mice were randomly allocated to three groups: control, high fat diet/streptozotocin (HFD/STZ), and HFD/STZ+B. toyo SAU-20 groups with oral administration of B. toyo SAU-20 for 35 days. Biochemistry parameters, glucose tolerance, and insulin resistance were measured in the blood whereas histological analysis, inflammatory cytokines and lipogenic genes in the liver tissues. The results showed that, the levels of serum glucose, lipid profile, mRNA expression of lipogenic related genes and pro-inflammatory cytokines were significantly increased in T2DM mice. However, after B. toyo SAU-20 administration, the elevation of these parameters was significantly suppressed (P<0.05). In addition, the feeding of B. toyo SAU-20 significantly improved the morphological changes of the liver with significant alleviation of dyslipidemia, oxidative stress status and inflammation (P<0.05) indicating the ameliorating effect of B. toyo SAU-20 in hepatic steatosis in T2DM. Therefore, we concluded that, B. toyo SAU-20 alleviated insulin resistance and hepatic steatosis by improving the lipid profiles, antioxidant status and downregulating lipogenic genes as well as pro-inflammation cytokines expression.
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Affiliation(s)
- Zhihua Ren
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Samuel Kumi Okyere
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lei Xie
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Juan Wen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Jiayi Wang
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Zhengli Chen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xueqin Ni
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Junliang Deng
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yanchun Hu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,New Ruipeng Pet Healthcare Group Co., Ltd. Shenzhen, China
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28
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Mechanism of glycometabolism regulation by bioactive compounds from the fruits of Lycium barbarum: A review. Food Res Int 2022; 159:111408. [DOI: 10.1016/j.foodres.2022.111408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/30/2022] [Accepted: 05/22/2022] [Indexed: 11/21/2022]
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29
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Wang JJ, Xue Q, Wang YJ, Zhang M, Chen YJ, Zhang Q. Engineered Chimeric Peptides with IGF-1 and Titanium-Binding Functions to Enhance Osteogenic Differentiation In Vitro under T2DM Condition. MATERIALS 2022; 15:ma15093134. [PMID: 35591468 PMCID: PMC9105221 DOI: 10.3390/ma15093134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/30/2022] [Accepted: 04/24/2022] [Indexed: 02/06/2023]
Abstract
Due to the complexity of the biomolecules and titanium (Ti) combination, it is a challenge to modify the implant surface with biological cytokines. The study proposed a new method for immobilizing cytokines on implant surface to solve the problem of low osseointegration under type 2 diabetes mellitus (T2DM) condition. This new modified protein that connected Ti-binding artificial aptamer minTBP-1 with Insulin-like growth factor I (IGF-I), had a special strong affinity with Ti and a therapeutic effect on diabetic bone loss. According to the copies of minTBP-1, three proteins were prepared, namely minTBP-1-IGF-1, 2minTBP-1-IGF-1 and 3minTBP-1-IGF-1. Compared with the other modified proteins, 3minTBP-1-IGF-1 adsorbed most on the Ti surface. Additionally, this biointerface demonstrated the most uniform state and the strongest hydrophilicity. In vitro results showed that the 3minTBP-1-IGF-1 significantly increased the adhesion, proliferation, and mineralization activity of osteoblasts under T2DM conditions when compared with the control group and the other modified IGF-1s groups. Real-time PCR assay results confirmed that 3minTBP-1-IGF-1 could effectively promote the expression of osteogenic genes, that is, ALP, BMP-2, OCN, OPG, and Runx2. All these data indicated that the 3minTBP-1-IGF-1 had the most efficacious effect in promoting osteoblasts osteogenesis in diabetic conditions, and may be a promising option for further clinical use.
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Affiliation(s)
| | | | | | - Min Zhang
- Correspondence: (M.Z.); (Y.-J.C.); (Q.Z.)
| | | | - Qian Zhang
- Correspondence: (M.Z.); (Y.-J.C.); (Q.Z.)
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30
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Figeac F, Tencerova M, Ali D, Andersen TL, Appadoo DRC, Kerckhofs G, Ditzel N, Kowal JM, Rauch A, Kassem M. Impaired bone fracture healing in type 2 diabetes is caused by defective functions of skeletal progenitor cells. Stem Cells 2022; 40:149-164. [DOI: 10.1093/stmcls/sxab011] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 09/17/2021] [Indexed: 11/12/2022]
Abstract
Abstract
The mechanisms of obesity and type 2 diabetes (T2D)-associated impaired fracture healing are poorly studied. In a murine model of T2D reflecting both hyperinsulinemia induced by high fat diet (HFD) and insulinopenia induced by treatment with streptozotocin (STZ), we examined bone healing in a tibia cortical bone defect. A delayed bone healing was observed during hyperinsulinemia as newly formed bone was reduced by – 28.4±7.7% and was associated with accumulation of marrow adipocytes at the defect site +124.06±38.71%, and increased density of SCA1+ (+74.99± 29.19%) but not Runx2 +osteoprogenitor cells. We also observed increased in reactive oxygen species production (+101.82± 33.05%), senescence gene signature (≈106.66± 34.03%) and LAMIN B1 - senescent cell density (+225.18± 43.15%), suggesting accelerated senescence phenotype. During insulinopenia, a more pronounced delayed bone healing was observed with decreased newly formed bone to -34.9± 6.2% which was inversely correlated with glucose levels (R 2=0.48, p<0.004) and callus adipose tissue area (R 2=0.3711, p<0.01). Finally, to investigate the relevance to human physiology, we observed that sera from obese and T2D subjects had disease state-specific inhibitory effects on osteoblast related gene signatures in human bone marrow stromal cells which resulted in inhibition of osteoblast and enhanced adipocyte differentiation. Our data demonstrate that T2D exerts negative effects on bone healing through inhibition of osteoblast differentiation of skeletal stem cells and induction of accelerated bone senescence and that the hyperglycaemia per se and not just insulin levels is detrimental for bone healing.
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Affiliation(s)
- Florence Figeac
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Denmark
| | - Michaela Tencerova
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Denmark
- Current Molecular Physiology of Bone, Institute of Physiology, the Czech Academy of Sciences, Prague, Czech Republic
| | - Dalia Ali
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Denmark
| | - Thomas L Andersen
- Department of Pathology, Odense University Hospital, Odense
- Clinical Cell Biology, Research Unit of Pathology, Department of Clinical Research, University of Southern Denmark, Denmark
- Department of Molecular Medicine, University of Southern Denmark, Denmark
| | | | - Greet Kerckhofs
- Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium
- Institute for Experimental and Clinical Research, UCLouvain, Woluwe, Belgium
- Department of Material Science and Engineering, KU Leuven, Leuven, Belgium
| | - Nicholas Ditzel
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Denmark
| | - Justyna M Kowal
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Denmark
| | - Alexander Rauch
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Denmark
- Steno Diabetes Center Odense, Odense University Hospital, Odense, Denmark
| | - Moustapha Kassem
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Denmark
- Department of Cellular and Molecular Medicine, Danish Stem Cell Center (DanStem), University of Copenhagen, Copenhagen, Denmark
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31
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Bacillus toyonensis SAU-19 Ameliorates Hepatic Insulin Resistance in High-Fat Diet/Streptozocin-Induced Diabetic Mice. Nutrients 2021; 13:nu13124512. [PMID: 34960064 PMCID: PMC8703646 DOI: 10.3390/nu13124512] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/15/2021] [Accepted: 12/15/2021] [Indexed: 12/16/2022] Open
Abstract
Insulin resistance (IR) is a hallmark of type 2 diabetes mellitus (T2DM). This study was performed to investigate the antidiabetic effect of Bacillus toyonensis SAU-19 and its possible mechanisms of action in mice with type 2 diabetes mellitus (T2DM). Thirty SPFKM mice were randomly assigned to three groups: control, diabetic model, and diabetes + Bacillus toyonensis SAU-19 group. After 35 days, blood was collected for biochemical analysis and liver tissue samples for histopathological analysis using H&E staining, qPCR, and ELISA. The results showed that the administration of B. toyonensis SAU-19 significantly improved the blood glucose, hepatic insulin resistance, and morphological changes of the liver characterized by significant improvement of dyslipidemia, glycogen synthesis, and antioxidant status (p < 0.05), indicating the strains’ ameliorating effects on hepatic insulin resistance in T2DM. In conclusion, the probiotic strain (B. toyonensis SAU-19) inhibits T2DM by reducing insulin resistance, improving antioxidant status, and downregulating genes related to glucose synthesis; hence, it may be used in treating diabetes and other metabolic disorders. This study provides the basis for further studies into the molecular mechanisms of B. toyonensis SAU-19 in treating T2DM.
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32
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Wickramasinghe ASD, Attanayake AP, Kalansuriya P. Biochemical characterization of high fat diet fed and low dose streptozotocin induced diabetic Wistar rat model. J Pharmacol Toxicol Methods 2021; 113:107144. [PMID: 34896263 DOI: 10.1016/j.vascn.2021.107144] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/14/2021] [Accepted: 12/02/2021] [Indexed: 10/19/2022]
Abstract
The development of a stable disease model with an adequate biochemical profile is crucial for the preclinical investigation of new antidiabetic agents. This study aimed at optimization and characterization of high fat diet (HFD) fed streptozotocin (STZ) induced type 2 diabetes mellitus (type 2 DM) Wistar rat model. Wistar rats fed with HFD for four weeks received STZ (30, 40, and 50 mg/kg, intraperitoneal). Diabetic rats were observed for four more weeks and sacrificed. Non- injected healthy Wistar rats and HFD-fed rats were used as control groups. The glucose status and the lipid profile of the model were assessed. STZ-induced rats showed significant dose-dependent alterations in fasting serum insulin and glucose, homeostatic model assessment- insulin resistance (HOMA-IR), HOMA- β cell function (HOMA- β), quantitative insulin sensitivity check index (QUICKI), total cholesterol (TC), triglycerides (TG) and atherogenic index (AI). STZ 50 mg/kg group rats showed significant increase in glycated hemoglobin (HbA1c), low density lipoprotein cholesterol (LDL-C) and very low density lipoprotein cholesterol (VLDL-C) levels compared to healthy rats. The atherogenic risk index (ARI), the Castelli risk index-I (CRII), and CRI-II were significantly (p < 0.05) high in the STZ 40 mg/kg and 50 mg/kg group rats. Results suggest that the Wistar rats fed with HFD rich in saturated fat for four weeks followed by a single intraperitoneal dose of 50 mg/kg of STZ would produce a stable diabetic model which closely mimic biochemical features of type 2 DM. Key messages: Wistar rats fed with HFD rich in saturated fat for four weeks followed by a single intraperitoneal dose of 50 mg/kg STZ would produce a stable diabetic model that closely mimics the biochemical characteristics of type 2 DM characterized by insulin resistance, relative insulin deficiency and impaired β cell function.
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Affiliation(s)
| | - Anoja P Attanayake
- Department of Biochemistry, Faculty of Medicine, University of Ruhuna, Sri Lanka.
| | - Pabasara Kalansuriya
- Department of Biochemistry, Faculty of Medicine, University of Ruhuna, Sri Lanka.
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33
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A new mouse model of type 2 diabetes mellitus established through combination of high-fat diet, streptozotocin and glucocorticoid. Life Sci 2021; 286:120062. [PMID: 34673117 DOI: 10.1016/j.lfs.2021.120062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 10/11/2021] [Accepted: 10/13/2021] [Indexed: 12/12/2022]
Abstract
AIM A stable induced type 2 diabetes model (T2DM) still needs to be explored for basic and clinical research, due to nonuniform model methods and unstable consequences. Our aims were to explore and establish an optimized induced T2DM model in mice that exhibits insulin resistance and β-cell damage. MATERIALS AND METHODS C57BL/6 mice were treated with a high-fat diet (HFD), streptozotocin (STZ) and dexamethasone (DEX) at different doses and in combination. The general growth status, blood glucose and fasting insulin were detected, and the success rate and insulin sensitivity indices were calculated. KEY FINDING Low-dose STZ injection multiple times was more secure in the process of T2DM model production. Combined intervention was more efficient in reducing insulin sensitivity and improving the success rate of T2DM model construction. SIGNIFICANCE Combined with a high-fat diet, glucocorticoids and streptozotocin, a new mouse model of T2DM with insulin resistance and β-cell damage could be established. The optimized experimental method can serve as a stable model for further studies on the mechanisms and therapy of T2DM.
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34
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Li DK, Smith LE, Rookyard AW, Lingam SJ, Koay YC, McEwen HP, Twigg SM, Don AS, O'Sullivan JF, Cordwell SJ, White MY. Multi-omics of a pre-clinical model of diabetic cardiomyopathy reveals increased fatty acid supply impacts mitochondrial metabolic selectivity. J Mol Cell Cardiol 2021; 164:92-109. [PMID: 34826416 DOI: 10.1016/j.yjmcc.2021.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 11/05/2021] [Accepted: 11/09/2021] [Indexed: 02/07/2023]
Abstract
The incidence of type 2 diabetes (T2D) is increasing globally, with long-term implications for human health and longevity. Heart disease is the leading cause of death in T2D patients, who display an elevated risk of an acute cardiovascular event and worse outcomes following such an insult. The underlying mechanisms that predispose the diabetic heart to this poor prognosis remain to be defined. This study developed a pre-clinical model (Rattus norvegicus) that complemented caloric excess from a high-fat diet (HFD) and pancreatic β-cell dysfunction from streptozotocin (STZ) to produce hyperglycaemia, peripheral insulin resistance, hyperlipidaemia and elevated fat mass to mimic the clinical features of T2D. Ex vivo cardiac function was assessed using Langendorff perfusion with systolic and diastolic contractile depression observed in T2D hearts. Cohorts representing untreated, individual HFD- or STZ-treatments and the combined HFD + STZ approach were used to generate ventricular samples (n = 9 per cohort) for sequential and integrated analysis of the proteome, lipidome and metabolome by liquid chromatography-tandem mass spectrometry. This study found that in T2D hearts, HFD treatment primed the metabolome, while STZ treatment was the major driver for changes in the proteome. Both treatments equally impacted the lipidome. Our data suggest that increases in β-oxidation and early TCA cycle intermediates promoted rerouting via 2-oxaloacetate to glutamate, γ-aminobutyric acid and glutathione. Furthermore, we suggest that the T2D heart activates networks to redistribute excess acetyl-CoA towards ketogenesis and incomplete β-oxidation through the formation of short-chain acylcarnitine species. Multi-omics provided a global and comprehensive molecular view of the diabetic heart, which distributes substrates and products from excess β-oxidation, reduces metabolic flexibility and impairs capacity to restore high energy reservoirs needed to respond to and prevent subsequent acute cardiovascular events.
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Affiliation(s)
- Desmond K Li
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; School of Medical Sciences, The University of Sydney, Camperdown, Australia
| | - Lauren E Smith
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; School of Medical Sciences, The University of Sydney, Camperdown, Australia
| | - Alexander W Rookyard
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; School of Life and Environmental Sciences, Camperdown, The University of Sydney, Australia
| | - Shivanjali J Lingam
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; School of Medical Sciences, The University of Sydney, Camperdown, Australia
| | - Yen C Koay
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; Sydney Medical School, The University of Sydney, Camperdown, Australia; Heart Research Institute, Newtown, Australia
| | - Holly P McEwen
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; Centenary Institute, The University of Sydney, Camperdown, Australia
| | - Stephen M Twigg
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; Sydney Medical School, The University of Sydney, Camperdown, Australia; Department of Endocrinology, Royal Prince Alfred Hospital, Camperdown, Australia
| | - Anthony S Don
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; School of Medical Sciences, The University of Sydney, Camperdown, Australia; Centenary Institute, The University of Sydney, Camperdown, Australia
| | - John F O'Sullivan
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; Sydney Medical School, The University of Sydney, Camperdown, Australia; Heart Research Institute, Newtown, Australia; Department of Cardiology, Royal Prince Alfred Hospital, Camperdown, Australia
| | - Stuart J Cordwell
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; School of Medical Sciences, The University of Sydney, Camperdown, Australia; School of Life and Environmental Sciences, Camperdown, The University of Sydney, Australia; Sydney Mass Spectrometry, The University of Sydney, Camperdown, Australia
| | - Melanie Y White
- Charles Perkins Centre, The University of Sydney, Camperdown, Australia; School of Medical Sciences, The University of Sydney, Camperdown, Australia.
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Yoshimura A, Yamaguchi T, Kugita M, Kumamoto K, Shiogama K, Ogitsu N, Yoneda M, Miura T, Nagamura Y, Nagao S. High Levels of Dietary Lard or Sucrose May Aggravate Lysosomal Renal Injury in Non-Obese, Streptozotocin-Injected CD-1 Mice Provided Isocaloric Diets. J Nutr Sci Vitaminol (Tokyo) 2021; 67:243-248. [PMID: 34470999 DOI: 10.3177/jnsv.67.243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Daily fat and sugar intake has increased in Japan, while total energy intake has decreased. However, the number of type 2 diabetes mellitus patients has increased, and this often causes renal injury characterized by autophagic vacuoles. Although many studies with comparisons of high fat or sugar versus a normal macronutrient balanced diet have been reported, there are few studies that equalized calorie intake and body weights. In the current study, AIN93M diets (CONT group) with matching energy content with lard derived high saturated fat (LARD group), soybean oil derived unsaturated fat (SOY OIL group) and sucrose (SUCROSE group) were provided to compare their effects on renal morphology in streptozotocin-injected CD-1 mice without causing obesity. The number of renal tubular vacuoles was higher in SUCROSE and slightly higher in LARD compared with CONT mice, and was higher in LARD and SUCROSE compared with SOY OIL mice. Most of those vacuoles were LAMP1-positive, a marker of lysosomal autophagy. These results suggest that despite identical energy contents, diets with high sucrose or saturated fat compared to unsaturated fat may aggravate lysosomal renal injury in a non-obese, streptozotocin-induced model of diabetes mellitus.
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Affiliation(s)
- Aya Yoshimura
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University
| | - Tamio Yamaguchi
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Masanori Kugita
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University
| | - Kanako Kumamoto
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University
| | - Kazuya Shiogama
- Division of Morphology and Cell Function, Faculty of Medical Technology, School of Health Sciences, Fujita Health University
| | - Naomichi Ogitsu
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Misao Yoneda
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Toshihiro Miura
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Yoichi Nagamura
- Department of Clinical Nutrition, Faculty of Health Science, Suzuka University of Medical Science
| | - Shizuko Nagao
- Education and Research Center of Animal Models for Human Diseases, Fujita Health University
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Belosludtsev KN, Starinets VS, Talanov EY, Mikheeva IB, Dubinin MV, Belosludtseva NV. Alisporivir Treatment Alleviates Mitochondrial Dysfunction in the Skeletal Muscles of C57BL/6NCrl Mice with High-Fat Diet/Streptozotocin-Induced Diabetes Mellitus. Int J Mol Sci 2021; 22:9524. [PMID: 34502433 PMCID: PMC8430760 DOI: 10.3390/ijms22179524] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/26/2021] [Accepted: 08/30/2021] [Indexed: 01/20/2023] Open
Abstract
Diabetes mellitus is a systemic metabolic disorder associated with mitochondrial dysfunction, with mitochondrial permeability transition (MPT) pore opening being recognized as one of its pathogenic mechanisms. Alisporivir has been recently identified as a non-immunosuppressive analogue of the MPT pore blocker cyclosporin A and has broad therapeutic potential. The purpose of the present work was to study the effect of alisporivir (2.5 mg/kg/day i.p.) on the ultrastructure and functions of the skeletal muscle mitochondria of mice with diabetes mellitus induced by a high-fat diet combined with streptozotocin injections. The glucose tolerance tests indicated that alisporivir increased the rate of glucose utilization in diabetic mice. An electron microscopy analysis showed that alisporivir prevented diabetes-induced changes in the ultrastructure and content of the mitochondria in myocytes. In diabetes, the ADP-stimulated respiration, respiratory control, and ADP/O ratios and the level of ATP synthase in the mitochondria decreased, whereas alisporivir treatment restored these indicators. Alisporivir eliminated diabetes-induced increases in mitochondrial lipid peroxidation products. Diabetic mice showed decreased mRNA levels of Atp5f1a, Ant1, and Ppif and increased levels of Ant2 in the skeletal muscles. The skeletal muscle mitochondria of diabetic animals were sensitized to the MPT pore opening. Alisporivir normalized the expression level of Ant2 and mitochondrial susceptibility to the MPT pore opening. In parallel, the levels of Mfn2 and Drp1 also returned to control values, suggesting a normalization of mitochondrial dynamics. These findings suggest that the targeting of the MPT pore opening by alisporivir is a therapeutic approach to prevent the development of mitochondrial dysfunction and associated oxidative stress in the skeletal muscles in diabetes.
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Affiliation(s)
- Konstantin N. Belosludtsev
- Department of Biochemistry, Cell Biology and Microbiology, Mari State University, pl. Lenina 1, 424001 Yoshkar-Ola, Russia; (V.S.S.); (M.V.D.)
| | - Vlada S. Starinets
- Department of Biochemistry, Cell Biology and Microbiology, Mari State University, pl. Lenina 1, 424001 Yoshkar-Ola, Russia; (V.S.S.); (M.V.D.)
- Laboratory of Mitochondrial Transport, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, 142290 Pushchino, Russia; (E.Y.T.); (I.B.M.); (N.V.B.)
| | - Eugeny Yu. Talanov
- Laboratory of Mitochondrial Transport, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, 142290 Pushchino, Russia; (E.Y.T.); (I.B.M.); (N.V.B.)
| | - Irina B. Mikheeva
- Laboratory of Mitochondrial Transport, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, 142290 Pushchino, Russia; (E.Y.T.); (I.B.M.); (N.V.B.)
| | - Mikhail V. Dubinin
- Department of Biochemistry, Cell Biology and Microbiology, Mari State University, pl. Lenina 1, 424001 Yoshkar-Ola, Russia; (V.S.S.); (M.V.D.)
| | - Natalia V. Belosludtseva
- Laboratory of Mitochondrial Transport, Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, 142290 Pushchino, Russia; (E.Y.T.); (I.B.M.); (N.V.B.)
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Lin S, Jin S, Zhou F, Hu Y, Zhang M. Effects of endurance exercise on serum inflammatory cytokine level and kidney structure in a rat diabetes model. Exp Ther Med 2021; 22:1125. [PMID: 34466141 PMCID: PMC8383327 DOI: 10.3892/etm.2021.10559] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 12/08/2020] [Indexed: 12/15/2022] Open
Abstract
Diabete mellitus (DM) is becoming a global health problem. Whilst many studies have previously focused on the therapeutic effects of exercise on diabetes, insufficient data exist on its effectiveness on disease prevention. The present study was designed to evaluate the effects of endurance exercises on kidney injury and on the expression of metalloproteinases (MMPs), tissue inhibitors of metalloproteinases (TIMPs) and transforming growth factor (TGF)-β1. Type 2 diabetic rat model was created followng 8 weeks of feeding on high fat diet, followed by injection with streptozotocin (STZ; 30 mg/kg). A total of three different intensity endurance exercises, including low-intensity exercise (8 m/min and 0˚ slope), moderate-intensity exercise (15 m/min and 5˚ slope) and high-intensity exercise (20 m/min and 10˚ slope), were arranged during this process. Oral glucose tolerance (OGTT) and oral sucrose tolerance tests (OSTT) were performed in all rats 1 week after STZ injection. Serum interleukin-6 and tumor necrosis factor-α levels were measured using ELISA. After OGTT, all rats were sacrificed and kidney samples were removed for hematoxylin and eosin staining and western blot analyzes. Urea and ureatinine levels, representative of renal function, were estimated by using automatic biochemical analyzer. Rats in the DM group showed severe impaired glucose tolerance, which was alleviated in the moderate-intensity exercise (ME) and the high-intensity exercise (HE) groups. Inflammatory cytokines were also significantly reduced rats in the ME group compared with those in the DM group. No difference in renal function, MMP-9/TIMP-1 and TGF-β1 expression was observed. In addition, rats in the DM group exhibited glomerular enlargement with structural renal abnormalities, whilst those in the ME and HE groups showed improved symptoms. To conclude, no increased expression of inflammatory cytokines and renal fibrotic proteins could be observed in the present rat model of type-2 DM, but evident structural abnormalities can be observed in the kidneys. Medium-intensity endurance exercise can reduce serum inflammatory cytokine levels and prevent aberrant changes in renal structures.
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Affiliation(s)
- Sen Lin
- Department of Sport Science, School of Physical Education, Central China Normal University, Wuhan, Hubei 430070, P.R. China
| | - Shanhu Jin
- Department of Sport Science, School of Physical Education, Central China Normal University, Wuhan, Hubei 430070, P.R. China
| | - Fenglin Zhou
- Department of Sport Science, School of Physical Education, Central China Normal University, Wuhan, Hubei 430070, P.R. China
| | - Yazhe Hu
- Department of Sport Science, School of Physical Education, Central China Normal University, Wuhan, Hubei 430070, P.R. China
| | - Ming Zhang
- Department of Sport Science, School of Physical Education, Central China Normal University, Wuhan, Hubei 430070, P.R. China
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Okan A, Doğanyiğit Z, Eroğlu E, Akyüz E, Demir N. Immunoreactive definition of TNF- α, HIF-1 α, Kir6.2, Kir3.1 and M2 muscarinic receptor for cardiac and pancreatic tissues in a mouse model for type 1 diabetes. Life Sci 2021; 284:119886. [PMID: 34389402 DOI: 10.1016/j.lfs.2021.119886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 11/25/2022]
Affiliation(s)
- Aslı Okan
- Department of Histology and Embryology, School of Medicine, Yozgat Bozok University, Yozgat 66100, Turkey
| | - Züleyha Doğanyiğit
- Department of Histology and Embryology, School of Medicine, Yozgat Bozok University, Yozgat 66100, Turkey
| | - Ece Eroğlu
- School of Medicine, Yozgat Bozok University, Yozgat 66100, Turkey
| | - Enes Akyüz
- Department of Biophysics, School of International Medicine, University of Health Sciences, Istanbul 34668, Turkey
| | - Necdet Demir
- Department of Histology and Embryology, School of Medicine, Akdeniz University, Antalya 07070, Turkey.
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Devi AR, Sengupta M, Barman DM, Choudhury Y. Oral Nicotine Induces Oxidative Stress and Inflammation but Does Not Subvert Tumor Suppressor and DNA Repair Responses in Mice. Indian J Clin Biochem 2021; 36:296-303. [PMID: 34220004 PMCID: PMC8215012 DOI: 10.1007/s12291-020-00903-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 06/08/2020] [Indexed: 01/03/2023]
Abstract
Nicotine, responsible for the addictive properties of tobacco, is widely used in nicotine replacement therapy for tobacco use cessation. We investigated the time-dependent effect of treatment with nicotine on the tumor suppressor, DNA repair and immune responses. Swiss Albino mice (laca strain) of both sexes received nicotine dissolved at a dose of 100 µg/ml in 2% sucrose for 24 weeks, by oral gavage, while age- and gender-matched controls received only 2% sucrose for the same period. Nicotine-treated and control mice were sacrificed 6, 16 and 24 weeks post-treatment, and their tissues evaluated for alterations in histology, oxidative stress, TNF-α levels, nitric oxide (NO) and myeloperoxidase (MPO) release, tumor suppressor response and DNA repair response. Statistical significance of results was determined using Students' t test. The tissues of nicotine treated mice exhibited a large number of multinucleated and binucleated cells, enlarged nuclei and non-uniform distribution of cells, significant increase in expression of TNF-α gene and serum TNF-α, and time-dependent significant increase in lipid peroxidation, protein carbonylation, NO and MPO release when compared to age-and gender-matched controls. The mRNA expression of the tumor suppressor gene p53, its primary regulator Mdm2, and the DNA repair genes Brca2 and Ape1 were significantly elevated, but the corresponding protein levels remained largely unaltered. In conclusion, treatment with nicotine caused oxidative stress and inflammation which can cause widespread cellular damage from the very onset of treatment, without subverting the tumor suppressor and DNA repair responses.
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Affiliation(s)
| | - Mahuya Sengupta
- Department of Biotechnology, Assam University, Silchar, 788011 India
| | - Dipu Mani Barman
- Department of Biotechnology, Assam University, Silchar, 788011 India
| | - Yashmin Choudhury
- Department of Biotechnology, Assam University, Silchar, 788011 India
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Alloxan as a better option than streptozotocin for studies involving painful diabetic neuropathy. J Pharmacol Toxicol Methods 2021; 112:107090. [PMID: 34175449 DOI: 10.1016/j.vascn.2021.107090] [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: 02/11/2021] [Revised: 05/26/2021] [Accepted: 06/18/2021] [Indexed: 11/21/2022]
Abstract
Previous data indicate that the diabetogenic substance streptozotocin might act in nociceptive neurons changing the sensory signal, regardless of hyperglycemia. In the present article the effects of streptozotocin were compared with another diabetogenic drug, alloxan, for diabetes induction in rats. A possible direct effect of these drugs was tested by means of in vivo experiments and in vitro assays using cultured primary nociceptive neurons. Streptozotocin (17.5 and 35 mg/kg), alloxan (15 and 30 mg/kg) or vehicle were injected in adult male rats and the animal groups were separated according to glycemic levels. Body mass, glycemia and paw mechanical sensitivity were evaluated for 5 weeks. Streptozotocin caused an increase in mechanical sensitivity in both hyperglycemic and normoglycemic rats, while alloxan induced mechanical sensitization only in hyperglycemic animals. Injection of both substances induced local inflammation at rat paws; however, only streptozotocin caused significant mechanical sensitization when injected near to sensory neurons at the dorsal root ganglia. Also, streptozotocin treatment induced a reduction in intracellular calcium levels and inhibited capsaicin induced calcium transients and membrane depolarization. Alloxan did not affect calcium levels or membrane potential in primary nociceptive neurons. These findings suggest that alloxan might be a better option for animal studies regarding painful diabetic neuropathy as streptozotocin directly affects nociceptive neurons, probably by modulating TRPV1 channel activation.
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Belosludtsev KN, Starinets VS, Belosludtsev MN, Mikheeva IB, Dubinin MV, Belosludtseva NV. Chronic treatment with dapagliflozin protects against mitochondrial dysfunction in the liver of C57BL/6NCrl mice with high-fat diet/streptozotocin-induced diabetes mellitus. Mitochondrion 2021; 59:246-254. [PMID: 34144205 DOI: 10.1016/j.mito.2021.06.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/20/2021] [Accepted: 06/14/2021] [Indexed: 01/17/2023]
Abstract
Dapagliflozin (DAPA), a selective inhibitor of sodium/glucose cotransporter SGLT2, is currently used as a hypoglycemic agent in the treatment of diabetes mellitus. In this work, we have assessed the effect of DAPA treatment (1 mg/kg/day) on the ultrastructure and functions of the liver mitochondria of C57BL/6NCrl mice with type 2 diabetes mellitus (T2DM) induced by a high-fat diet combined with low-dose streptozotocin injections. An electron microscopy study showed that DAPA prevented the mitochondrial swelling and normalized the average mitochondrial size in hepatocytes of diabetic animals. The treatment with DAPA reversed the decline in the mtDNA copy number in the liver of diabetic mice. DAPA-treated T2DM mice showed increased expression of the Ppargc1a, Mfn2 and Drp1 in the liver tissue. The treatment of diabetic animals with DAPA normalized the mitochondrial respiratory control ratio, significantly decreased the level of lipid peroxidation products in liver mitochondria, and decreased their resistance to the opening of the mitochondrial permeability transition pore. At the same time, DAPA had no effects on the studied parameters of control animals. The paper discusses the possible mechanisms of the effect of dapagliflozin on mitochondrial dysfunction in the liver of diabetic animals.
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Affiliation(s)
- Konstantin N Belosludtsev
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El 424001, Russia; Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region 142290, Russia.
| | - Vlada S Starinets
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El 424001, Russia; Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region 142290, Russia
| | | | - Irina B Mikheeva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region 142290, Russia
| | - Mikhail V Dubinin
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El 424001, Russia
| | - Natalia V Belosludtseva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region 142290, Russia
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Moratal C, Laurain A, Naïmi M, Florin T, Esnault V, Neels JG, Chevalier N, Chinetti G, Favre G. Regulation of Monocytes/Macrophages by the Renin-Angiotensin System in Diabetic Nephropathy: State of the Art and Results of a Pilot Study. Int J Mol Sci 2021; 22:ijms22116009. [PMID: 34199409 PMCID: PMC8199594 DOI: 10.3390/ijms22116009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/17/2021] [Accepted: 05/28/2021] [Indexed: 12/24/2022] Open
Abstract
Diabetic nephropathy (DN) is characterized by albuminuria, loss of renal function, renal fibrosis and infiltration of macrophages originating from peripheral monocytes inside kidneys. DN is also associated with intrarenal overactivation of the renin-angiotensin system (RAS), an enzymatic cascade which is expressed and controlled at the cell and/or tissue levels. All members of the RAS are present in the kidneys and most of them are also expressed in monocytes/macrophages. This review focuses on the control of monocyte recruitment and the modulation of macrophage polarization by the RAS in the context of DN. The local RAS favors the adhesion of monocytes on renal endothelial cells and increases the production of monocyte chemotactic protein-1 and of osteopontin in tubular cells, driving monocytes into the kidneys. There, proinflammatory cytokines and the RAS promote the differentiation of macrophages into the M1 proinflammatory phenotype, largely contributing to renal lesions of DN. Finally, resolution of the inflammatory process is associated with a phenotype switch of macrophages into the M2 anti-inflammatory subset, which protects against DN. The pharmacologic interruption of the RAS reduces albuminuria, improves the trajectory of the renal function, decreases macrophage infiltration in the kidneys and promotes the switch of the macrophage phenotype from M1 to M2.
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Affiliation(s)
- Claudine Moratal
- Université Côte d’Azur, INSERM, C3M, 06204 Nice, France;
- Correspondence:
| | - Audrey Laurain
- Faculty of Medicine, Côte d’Azur University, 06107 Nice, France; (A.L.); (V.E.); (G.F.)
- Centre National de la Recherche Scientifique, UMR 7073, Laboratory of Physiology and Molecular Medicine (LP2M), 06107 Nice, France
- Nephrology, Dialysis and Transplantation Department, University Hospital, 06002 Nice, France;
| | - Mourad Naïmi
- Université Côte d’Azur, CHU, 06000 Nice, France;
| | - Thibault Florin
- Nephrology, Dialysis and Transplantation Department, University Hospital, 06002 Nice, France;
| | - Vincent Esnault
- Faculty of Medicine, Côte d’Azur University, 06107 Nice, France; (A.L.); (V.E.); (G.F.)
- Nephrology, Dialysis and Transplantation Department, University Hospital, 06002 Nice, France;
| | - Jaap G. Neels
- Université Côte d’Azur, INSERM, C3M, 06204 Nice, France;
| | - Nicolas Chevalier
- Université Côte d’Azur, CHU, INSERM, C3M, 06000 Nice, France; (N.C.); (G.C.)
| | - Giulia Chinetti
- Université Côte d’Azur, CHU, INSERM, C3M, 06000 Nice, France; (N.C.); (G.C.)
| | - Guillaume Favre
- Faculty of Medicine, Côte d’Azur University, 06107 Nice, France; (A.L.); (V.E.); (G.F.)
- Centre National de la Recherche Scientifique, UMR 7073, Laboratory of Physiology and Molecular Medicine (LP2M), 06107 Nice, France
- Nephrology, Dialysis and Transplantation Department, University Hospital, 06002 Nice, France;
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Byrne NJ, Rajasekaran NS, Abel ED, Bugger H. Therapeutic potential of targeting oxidative stress in diabetic cardiomyopathy. Free Radic Biol Med 2021; 169:317-342. [PMID: 33910093 PMCID: PMC8285002 DOI: 10.1016/j.freeradbiomed.2021.03.046] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/24/2021] [Accepted: 03/25/2021] [Indexed: 02/07/2023]
Abstract
Even in the absence of coronary artery disease and hypertension, diabetes mellitus (DM) may increase the risk for heart failure development. This risk evolves from functional and structural alterations induced by diabetes in the heart, a cardiac entity termed diabetic cardiomyopathy (DbCM). Oxidative stress, defined as the imbalance of reactive oxygen species (ROS) has been increasingly proposed to contribute to the development of DbCM. There are several sources of ROS production including the mitochondria, NAD(P)H oxidase, xanthine oxidase, and uncoupled nitric oxide synthase. Overproduction of ROS in DbCM is thought to be counterbalanced by elevated antioxidant defense enzymes such as catalase and superoxide dismutase. Excess ROS in the cardiomyocyte results in further ROS production, mitochondrial DNA damage, lipid peroxidation, post-translational modifications of proteins and ultimately cell death and cardiac dysfunction. Furthermore, ROS modulates transcription factors responsible for expression of antioxidant enzymes. Lastly, evidence exists that several pharmacological agents may convey cardiovascular benefit by antioxidant mechanisms. As such, increasing our understanding of the pathways that lead to increased ROS production and impaired antioxidant defense may enable the development of therapeutic strategies against the progression of DbCM. Herein, we review the current knowledge about causes and consequences of ROS in DbCM, as well as the therapeutic potential and strategies of targeting oxidative stress in the diabetic heart.
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Affiliation(s)
- Nikole J Byrne
- Division of Cardiology, Medical University of Graz, Graz, Austria
| | - Namakkal S Rajasekaran
- Cardiac Aging & Redox Signaling Laboratory, Molecular and Cellular Pathology, Department of Pathology, Birmingham, AL, USA; Division of Cardiovascular Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA; Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - E Dale Abel
- Fraternal Order of Eagles Diabetes Research Center, Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, USA
| | - Heiko Bugger
- Division of Cardiology, Medical University of Graz, Graz, Austria.
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Yang Y, Zhao M, He X, Wu Q, Li DL, Zang WJ. Pyridostigmine Protects Against Diabetic Cardiomyopathy by Regulating Vagal Activity, Gut Microbiota, and Branched-Chain Amino Acid Catabolism in Diabetic Mice. Front Pharmacol 2021; 12:647481. [PMID: 34084135 PMCID: PMC8167056 DOI: 10.3389/fphar.2021.647481] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/23/2021] [Indexed: 12/13/2022] Open
Abstract
The disruption of gut microbes is associated with diabetic cardiomyopathy, but the mechanism by which gut microbes affect cardiac damage remains unclear. We explored gut microbes and branched-chain amino acid (BCAA) metabolite catabolism in diabetic cardiomyopathy mice and investigated the cardioprotective effect of pyridostigmine. The experiments were conducted using a model of diabetic cardiomyopathy induced by a high-fat diet + streptozotocin in C57BL/6 mice. The results of high-throughput sequencing showed that diabetic cardiomyopathy mice exhibited decreased gut microbial diversity, altered abundance of the diabetes-related microbes, and increased abundance of the BCAA-producing microbes Clostridiales and Lachnospiraceae. In addition, diabetes downregulated tight junction proteins (ZO-1, occludin, and claudin-1) and increased intestinal permeability to impair the intestinal barrier. These impairments were accompanied by reduction in vagal activity that manifested as increased acetylcholinesterase levels, decreased acetylcholine levels, and heart rate variability, which eventually led to cardiac damage. Pyridostigmine enhanced vagal activity, restored gut microbiota homeostasis, decreased BCAA-producing microbe abundance, and improved the intestinal barrier to reduce circulating BCAA levels. Pyridostigmine also upregulated BCAT2 and PP2Cm and downregulated p-BCKDHA/BCKDHA and BCKDK to improve cardiac BCAA catabolism. Moreover, pyridostigmine alleviated abnormal mitochondrial structure; increased ATP production; decreased reactive oxygen species and mitochondria-related apoptosis; and attenuated cardiac dysfunction, hypertrophy, and fibrosis in diabetic cardiomyopathy mice. In conclusion, the gut microbiota, BCAA catabolism, and vagal activity were impaired in diabetic cardiomyopathy mice but were improved by pyridostigmine. These results provide novel insights for the development of a therapeutic strategy for diabetes-induced cardiac damage that targets gut microbes and BCAA catabolism.
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Affiliation(s)
- Yang Yang
- Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Ming Zhao
- Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Xi He
- Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Qing Wu
- Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Dong-Ling Li
- Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Wei-Jin Zang
- Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
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Rajkumari J, Choudhury Y, Bhattacharjee K, Pandey P. Rhizodegradation of Pyrene by a Non-pathogenic Klebsiella pneumoniae Isolate Applied With Tagetes erecta L. and Changes in the Rhizobacterial Community. Front Microbiol 2021; 12:593023. [PMID: 33708179 PMCID: PMC7940843 DOI: 10.3389/fmicb.2021.593023] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 01/18/2021] [Indexed: 11/27/2022] Open
Abstract
The non-clinical Klebsiella pneumoniae variants, isolated from different environments, are now well acknowledged for their role in plant-growth promotion and biodegradation of pollutants. In the present study, a non-clinical environmental isolate K. pneumoniae AWD5 is being described for rhizoremediation of pyrene, applied through the rhizosphere of an ornamental plant, Tagetes erecta L (marigold). The non-pathogenic nature of AWD5 was established using an in vivo mouse model experiment, where AWD5 was unable to cause lung infection in tested mice. Degradation of pyrene, in the presence of succinate as co-substrate, was observed to be 87.5% by AWD5, after 21 days of incubation in minimal (Bushnell–Hass) medium in vitro conditions. Consequently, the bacterial inoculation through the rhizosphere of T. erecta L. plants resulted in 68.61% degradation of pyrene, which was significantly higher than control soil. Inoculation of AWD5 also improved plant growth and exhibited an increase in root length (14.64%), dry root weight (80.56%), shoot length (3.26%), and dry shoot weight (45.35%) after 60 days of incubation. T. erecta L., an ornamental plant, was also found to be suitable for bioremediation of pyrene. The effect of AWD5 application, and rhizoremediation process, on rhizosphere bacterial diversity and community structure has been studied using the metagenomic analysis of the 16S (V3–V4) region of rRNA. 37 bacterial phyla constituted the core microbiome, which was dominated by Proteobacteria followed by Actinobacteria, Actinobacteria, and Planctomycetes for all the treatments. AWD5 inoculation enhanced the relative abundance of Firmicutes and Acidobacteria as compared with other treatments. Genus Kaistobacter and Verrucomicrobia were found to be an abundant indigenous population in pyrene-spiked soils. Bacterial richness and diversity were analyzed using the Shannon–Wiener (H) index. A lower diversity index was observed in pyrene-spiked soils. Canonical correspondence analysis (CCA) showed a possible linkage with plant growth attributes and available nitrogen content that influences diversity and abundance of the bacterial community.
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Affiliation(s)
- Jina Rajkumari
- Department of Microbiology, Assam University, Silchar, India
| | | | | | - Piyush Pandey
- Department of Microbiology, Assam University, Silchar, India
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Franco NH, Miranda SB, Kovács N, Nagy A, Thiện BQ, Reis F, Varga O. Assessing Scientific Soundness and Translational Value of Animal Studies on DPP4 Inhibitors for Treating Type 2 Diabetes Mellitus. BIOLOGY 2021; 10:155. [PMID: 33669354 PMCID: PMC7920304 DOI: 10.3390/biology10020155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/10/2021] [Accepted: 02/13/2021] [Indexed: 12/14/2022]
Abstract
Although there is a wide range of animal models of type 2 diabetes mellitus (T2DM) used in research; we have limited evidence on their translation value. This paper provides a) a comparison of preclinical animal and clinical results on the effect of five dipeptidyl peptidase-4 (DPP4) inhibitors by comparing the pharmaceutical caused glucose changes, and b) an evaluation of methodological and reporting standards in T2DM preclinical animal studies. DPP4 inhibitors play an important role in the clinical management of T2DM: if metformin alone is not sufficient enough to control the blood sugar levels, DPP4 inhibitors are often used as second-line therapy; additionally, DPP-4 inhibitors are also used in triple therapies with metformin and sodium-glucose co-transporter-2 (SGLT-2) inhibitors or with metformin and insulin. In our analysis of 124 preclinical studies and 47 clinical trials, (1) we found no evidence of species differences in glucose change response to DPP4 inhibitors, which may suggest that, for this drug class, studies in mice and rats may be equally predictive of how well a drug will work in humans; and (2) there is good reporting of group size, sex, age, euthanasia method and self-reported compliance with animal welfare regulations in animal studies but poor reporting of justification of group size, along with a strong bias towards the use of male animals and young animals. Instead of the common non-transparent model selection, we call for a reflective and evidenced-based assessment of predictive validity of the animal models currently available.
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Affiliation(s)
- Nuno Henrique Franco
- Laboratory Animal Science Group, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (N.H.F.); (S.B.M.)
- Instituto de Investigação e Inovação da Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
| | - Sonia Batista Miranda
- Laboratory Animal Science Group, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal; (N.H.F.); (S.B.M.)
- Instituto de Investigação e Inovação da Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
| | - Nóra Kovács
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Kassai út 26, 4028 Debrecen, Hungary;
| | - Attila Nagy
- Faculty of Public Health, University of Debrecen, Kassai út 26, 4028 Debrecen, Hungary;
| | - Bùi Quốc Thiện
- Faculty of Medicine, University of Debrecen, Egyetem Square 1, 4032 Debrecen, Hungary;
| | - Flávio Reis
- Institute of Pharmacology and Experimental Therapeutics, and Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal;
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3004-504 Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), 3004-504 Coimbra, Portugal
| | - Orsolya Varga
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Kassai út 26, 4028 Debrecen, Hungary;
- Office for Research Groups Attached to Universities and Other Institutions, Hungarian Academy of Sciences, 1051 Budapest, Hungary
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Zangerolamo L, Vettorazzi JF, Solon C, Bronczek GA, Engel DF, Kurauti MA, Soares GM, Rodrigues KS, Velloso LA, Boschero AC, Carneiro EM, Barbosa HCL. The bile acid TUDCA improves glucose metabolism in streptozotocin-induced Alzheimer's disease mice model. Mol Cell Endocrinol 2021; 521:111116. [PMID: 33321116 DOI: 10.1016/j.mce.2020.111116] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 11/24/2020] [Accepted: 12/04/2020] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder and the major cause of dementia. According to predictions of the World Health Organization, more than 150 million people worldwide will suffer from dementia by 2050. An increasing number of studies have associated AD with type 2 diabetes mellitus (T2DM), since most of the features found in T2DM are also observed in AD, such as insulin resistance and glucose intolerance. In this sense, some bile acids have emerged as new therapeutic targets to treat AD and metabolic disorders. The taurine conjugated bile acid, tauroursodeoxycholic (TUDCA), reduces amyloid oligomer accumulation and improves cognition in APP/PS1 mice model of AD, and also improves glucose-insulin homeostasis in obese and type 2 diabetic mice. Herein, we investigated the effect of TUDCA upon glucose metabolism in streptozotocin-induced AD mice model (Stz). The Stz mice that received 300 mg/kg TUDCA during 10 days (Stz + TUDCA), showed improvement in glucose tolerance and insulin sensitivity, reduced fasted and fed glycemia, increased islet mass and β-cell area, as well as increased glucose-stimulated insulin secretion, compared with Stz mice that received only PBS. Stz + TUDCA mice also displayed lower neuroinflammation, reduced protein content of amyloid oligomer in the hippocampus, improved memory test and increased protein content of insulin receptor β-subunit in the hippocampus. In conclusion, TUDCA treatment enhanced glucose homeostasis in the streptozotocin-induced Alzheimer's disease mice model, pointing this bile acid as a good strategy to counteract glucose homeostasis disturbance in AD pathology.
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Affiliation(s)
- Lucas Zangerolamo
- Obesity and Comorbidities Research Center, Department of Structural and Functional Biology, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | | | - Carina Solon
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | - Gabriela A Bronczek
- Obesity and Comorbidities Research Center, Department of Structural and Functional Biology, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | - Daiane F Engel
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | - Mirian A Kurauti
- Department of Physiological Sciences, State University of Maringa, UEM, Maringa, Parana, Brazil
| | - Gabriela M Soares
- Obesity and Comorbidities Research Center, Department of Structural and Functional Biology, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | - Karina S Rodrigues
- Obesity and Comorbidities Research Center, Department of Structural and Functional Biology, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | - Licio A Velloso
- Laboratory of Cell Signaling, Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | - Antonio C Boschero
- Obesity and Comorbidities Research Center, Department of Structural and Functional Biology, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | - Everardo M Carneiro
- Obesity and Comorbidities Research Center, Department of Structural and Functional Biology, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil
| | - Helena C L Barbosa
- Obesity and Comorbidities Research Center, Department of Structural and Functional Biology, University of Campinas, UNICAMP, Campinas, Sao Paulo, Brazil.
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Castañeda-Corral G, Velázquez-Salazar NB, Martínez-Martínez A, Taboada-Serrano JN, Núñez-Aragón PN, González-Palomares L, Acosta-González RI, Petricevich VL, Acevedo-Fernández JJ, Montes S, Jiménez-Andrade JM. Characterization of Mechanical Allodynia and Skin Innervation in a Mouse Model of Type-2 Diabetes Induced by Cafeteria-Style Diet and Low-Doses of Streptozotocin. Front Pharmacol 2021; 11:628438. [PMID: 33732147 PMCID: PMC7957928 DOI: 10.3389/fphar.2020.628438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 12/31/2020] [Indexed: 01/14/2023] Open
Abstract
Background: Painful distal symmetrical polyneuropathy (DPN) is a frequent complication of type-2 diabetes mellitus (T2DM) that commonly presents as neuropathic pain and loss of skin nerve fibers. However, there are limited therapies to effectively treat DPN and many of the current animal models of T2DM-induced DPN do not appear to mirror the human disease. Thus, we validated a DPN mouse model induced by a cafeteria-style diet plus low-doses of streptozotocin (STZ). Methods: Female C57BL/6J mice were fed either standard (STD) diet or obesogenic cafeteria (CAF) diet for 32 weeks, starting at 8 weeks old. Eight weeks after starting diets, CAF or STD mice received either four low-doses of STZ or vehicle. Changes in body weight, blood glucose and insulin levels, as well as oral glucose- and insulin-tolerance tests (OGTT and ITT) were determined. The development of mechanical hypersensitivity of the hindpaws was determined using von Frey filaments. Moreover, the effect of the most common neuropathic pain drugs was evaluated on T2DM-induced mechanical allodynia. Finally, the density of PGP -9.5+ (a pan-neuronal marker) axons in the epidermis from the hindpaw glabrous skin was quantified. Results: At 22–24 weeks after STZ injections, CAF + STZ mice had significantly higher glucose and insulin levels compared to CAF + VEH, STD + STZ, and STD + VEH mice, and developed glucose tolerance and insulin resistance. Skin mechanical sensitivity was detected as early as 12 weeks post-STZ injections and it was significantly attenuated by intraperitoneal acute treatment with amitriptyline, gabapentin, tramadol, duloxetine, or carbamazepine but not by diclofenac. The density of PGP-9.5+ nerve fibers was reduced in CAF + STZ mice compared to other groups. Conclusion: This reverse translational study provides a painful DPN mouse model which may help in developing a better understanding of the factors that generate and maintain neuropathic pain and denervation of skin under T2DM and to identify mechanism-based new treatments.
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Affiliation(s)
| | | | - Arisai Martínez-Martínez
- Unidad Académica Multidisciplinaria Reynosa Aztlán, Universidad Autónoma de Tamaulipas, Reynosa, México
| | | | - Pablo N Núñez-Aragón
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, México
| | | | | | - Vera L Petricevich
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, México
| | | | - Sergio Montes
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía "Dr. Manuel Velasco Suárez", Ciudad de México México
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Ameer OZ, Salman IM, Alwadi AY, Ouban A, Abu-Owaimer FM, AlSharari SD, Bukhari IA. Regional functional and structural abnormalities within the aorta as a potential driver of vascular disease in metabolic syndrome. Exp Physiol 2021; 106:771-788. [PMID: 33450088 DOI: 10.1113/ep089213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 01/06/2021] [Indexed: 12/11/2022]
Abstract
NEW FINDINGS What is the central question of this study? Is aortic dysfunction, a significant contributor to cardiovascular disease in metabolic syndrome, expressed uniformly across both the thoracic and abdominal aorta? What is the main finding and its importance? Our study shows that, in the setting of metabolic syndrome, functional and structural deficits in the aorta are differentially expressed along its length, with the abdominal portion displaying more extensive vascular abnormalities. It is, therefore, likely that early interventional strategies targeting the abdominal aorta might alleviate cardiovascular pathologies driven by the metabolic syndrome. ABSTRACT The extent of vascular dysfunction associated with metabolic syndrome might vary along the length of the aorta. In this study, we investigated regional functional and structural changes in the thoracic and abdominal aorta of a rat model of metabolic syndrome, namely, high-fat diet (HFD) streptozotocin-induced diabetes mellitus (HFD-D). Four-week-old male Wistar albino rats were fed with either HFD or control diet (CD) for 10 weeks. At week 6, 40 mg/kg streptozotocin and its vehicle were injected i.p. into HFD and CD groups, respectively. At the end of the feeding period, rats were euthanised and aortic segments collected for assessment of vascular functional responses and histomorphometry. Tail-cuff systolic blood pressures (154 ± 6 vs. 110 ± 4 mmHg) and areas under the curve for oral glucose and i.p. insulin tolerance tests were greater in HFD-D versus CD rats. Abdominal aortic vasoconstriction in response to noradrenaline and KCl was greater in HFD-D compared with CD rats. Thoracic vasoconstrictor responses to noradrenaline, but not KCl, were greater in the HFD-D group. Abdominal, but not thoracic, endothelium-dependent vasorelaxation in response to acetylcholine was blunted in HFD-D relative to CD rats; however, nitric oxide-dependent vasorelaxation in HFD-D rats was impaired in both thoracic and abdominal segments. The abdominal aorta of HFD-D rats showed deranged interlamellar spacing and increased lipid plaque deposition. In conclusion, vascular dysfunction in metabolic syndrome is expressed differentially along the length of the aorta, with the abdominal aorta exhibiting increased susceptibility to vasoconstrictors and greater deficits in endothelium-dependent relaxation. These vascular functional abnormalities could potentially underlie the development of hypertensive cardiovascular disease associated with the metabolic syndrome.
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Affiliation(s)
- Omar Z Ameer
- College of Pharmacy, Alfaisal University, Riyadh, Kingdom of Saudi Arabia
| | - Ibrahim M Salman
- College of Pharmacy, Alfaisal University, Riyadh, Kingdom of Saudi Arabia
| | - Aiman Y Alwadi
- College of Pharmacy, Alfaisal University, Riyadh, Kingdom of Saudi Arabia
| | - Abderrahman Ouban
- College of Medicine, Alfaisal University, Riyadh, Kingdom of Saudi Arabia
| | | | - Shakir D AlSharari
- College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Ishfaq A Bukhari
- College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia
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50
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Tseng CH. Vildagliptin Has a Neutral Association With Dementia Risk in Type 2 Diabetes Patients. Front Endocrinol (Lausanne) 2021; 12:637392. [PMID: 33995274 PMCID: PMC8120263 DOI: 10.3389/fendo.2021.637392] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 04/12/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND AND AIMS Animal studies suggested that vildagliptin might exert a beneficial effect on cognitive function. The present study evaluated whether the use of vildagliptin in patients with type 2 diabetes mellitus might affect dementia risk. METHODS The database of Taiwan's National Health Insurance was used to enroll an unmatched cohort and a propensity score-matched-pair cohort of ever and never users of vildagliptin from patients with newly diagnosed diabetes mellitus during 2002-2014. The patients should be alive on January 1, 2015 and were followed up for dementia diagnosis until December 31, 2016. Unadjusted and multivariate-adjusted hazard ratios (HR) and their 95% confidence intervals (CI) were estimated for vildagliptin ever versus never users, for cumulative duration and cumulative dose of vildagliptin therapy categorized into tertiles versus never users, and for cumulative duration and cumulative dose treated as continuous variables. RESULTS There were 355610 never users and 43196 ever users in the unmatched cohort and 40489 never users and 40489 ever users in the matched cohort. In the unmatched cohort, unadjusted HR (95% CI) was 0.929 (0.683-1.264) and the multivariate-adjusted HR (95% CI) was 0.922 (0.620-1.372). In the matched cohort, the unadjusted HR (95% CI) was 0.930 (0.616-1.402) and the multivariate-adjusted HR (95% CI) was 0.825 (0.498-1.367). None of the analyses conducted for cumulative duration and cumulative dose was significant, either being treated as tertile cutoffs or as continuous variables, in either the unmatched cohort or the matched cohort. CONCLUSIONS This study showed a neutral effect of vildagliptin on dementia risk.
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Affiliation(s)
- Chin-Hsiao Tseng
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Division of Environmental Health and Occupational Medicine of the National Health Research Institutes, Zhunan, Taiwan
- *Correspondence: Chin-Hsiao Tseng,
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