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Feng X, Zheng Y, Mao N, Shen M, Chu L, Fang Y, Pang M, Wang Z, Lin Z. Menaquinone-4 alleviates hypoxic-ischemic brain damage in neonatal rats by reducing mitochondrial dysfunction via Sirt1-PGC-1α-TFAM signaling pathway. Int Immunopharmacol 2024; 134:112257. [PMID: 38759366 DOI: 10.1016/j.intimp.2024.112257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/01/2024] [Accepted: 05/10/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND Hypoxic-ischemic encephalopathy (HIE) is a major contributor to neonatal mortality and neurodevelopmental disorders, but currently there is no effective therapy drug for HIE. Mitochondrial dysfunction plays a pivotal role in hypoxic-ischemic brain damage(HIBD). Menaquinone-4 (MK-4), a subtype of vitamin K2 prevalent in the brain, has been shown to enhance mitochondrial function and exhibit protective effects against ischemia-reperfusion injury. However, the impact and underlying molecular mechanism of MK-4 in HIE have not been fully elucidated. METHODS In this study, we established the neonatal rats HIBD model in vivo and oxygen-glucose deprivation and reperfusion (OGD/R) of primary neurons in vitro to explore the neuroprotective effects of MK-4 on HI damage, and illuminate the potential mechanism. RESULTS Our findings revealed that MK-4 ameliorated mitochondrial dysfunction, reduced oxidative stress, and prevented HI-induced neuronal apoptosis by activating the Sirt1-PGC-1α-TFAM signaling pathway through Sirt1 mediation. Importantly, these protective effects were partially reversed by EX-527, a Sirt1 inhibitor. CONCLUSION Our study elucidated the potential therapeutic mechanism of MK-4 in neonatal HIE, suggesting its viability as an agent for enhancing recovery from HI-induced cerebral damage in newborns. Further exploration into MK-4 could lead to novel interventions for HIE therapy.
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Affiliation(s)
- Xiaoli Feng
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Key Laboratory of Perinatal Medicine of Wenzhou, Wenzhou, Zhejiang 325027, China
| | - Yihui Zheng
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Key Laboratory of Perinatal Medicine of Wenzhou, Wenzhou, Zhejiang 325027, China
| | - Niping Mao
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Key Laboratory of Perinatal Medicine of Wenzhou, Wenzhou, Zhejiang 325027, China
| | - Ming Shen
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Key Laboratory of Perinatal Medicine of Wenzhou, Wenzhou, Zhejiang 325027, China
| | - Liuxi Chu
- National Key Laboratory of Macromolecular Drug Development and Manufacturing, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Affiliated Cixi Hospital, Wenzhou Medical University, Cixi, Zhejiang 315300, China
| | - Yu Fang
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Key Laboratory of Perinatal Medicine of Wenzhou, Wenzhou, Zhejiang 325027, China
| | - Mengdan Pang
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Key Laboratory of Perinatal Medicine of Wenzhou, Wenzhou, Zhejiang 325027, China
| | - Zhouguang Wang
- National Key Laboratory of Macromolecular Drug Development and Manufacturing, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
| | - Zhenlang Lin
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Key Laboratory of Perinatal Medicine of Wenzhou, Wenzhou, Zhejiang 325027, China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, Zhejiang 325027, China.
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2
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Pokharel P, Bellinge JW, Dalgaard F, Murray K, Sim M, Yeap BB, Connolly E, Blekkenhorst LC, Bondonno CP, Lewis JR, Gislason G, Tjønneland A, Overvad K, Hodgson JM, Schultz C, Bondonno NP. Vitamin K1 Intake and Incident Diabetes in the Danish Diet, Cancer, and Health Study. J Clin Endocrinol Metab 2023; 108:e1253-e1263. [PMID: 37235778 PMCID: PMC10583989 DOI: 10.1210/clinem/dgad293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/10/2023] [Accepted: 05/22/2023] [Indexed: 05/28/2023]
Abstract
CONTEXT Observational studies have reported lower risks of type 2 diabetes with higher vitamin K1 intake, but these studies overlook effect modification due to known diabetes risk factors. OBJECTIVE To identify subgroups that might benefit from vitamin K1 intake, we examined associations between vitamin K1 intake and incident diabetes overall and in subpopulations at risk of diabetes. METHODS Participants from the prospective cohort, the Danish Diet, Cancer, and Health Study, with no history of diabetes were followed up for diabetes incidence. The association between intake of vitamin K1, estimated from a food frequency questionnaire completed at baseline, and incident diabetes was determined using multivariable-adjusted Cox proportional-hazards models. RESULTS In 54 787 Danish residents with a median (interquartile range) age of 56 (52-60) years at baseline, 6700 individuals were diagnosed with diabetes during 20.8 (17.3-21.6) years of follow-up. Vitamin K1 intake was inversely and linearly associated with incident diabetes (P < .0001). Compared to participants with the lowest vitamin K1 intake (median:57 µg/d), participants with the highest intakes (median:191 µg/d) had a 31% lower risk of diabetes (HR; 95% CI, 0.69; 0.64-0.74) after multivariable adjustments. The inverse association between vitamin K1 intake and incident diabetes was present in all subgroups (namely, men and women, ever and never smokers, low and high physical activity groups, and in participants who were normal to overweight and obese), with differences in absolute risk between subgroups. CONCLUSION Higher intake of foods rich in vitamin K1 was associated with a lower risk of diabetes. If the associations observed are causal, our results indicate that more cases of diabetes would be prevented in subgroups at higher risk (men, smokers, participants with obesity, and those with low physical activity).
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Affiliation(s)
- Pratik Pokharel
- Nutrition and Biomarkers, The Danish Cancer Society Research Center, Copenhagen 2100, Denmark
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia 6000, Australia
| | - Jamie W Bellinge
- Medical School, University of Western Australia, Perth, Western Australia 6009, Australia
- Department of Cardiology, Royal Perth Hospital, Perth, Western Australia 6000, Australia
| | - Frederik Dalgaard
- Department of Medicine, Nykøbing Falster Sygehus, Nykøbing 4800, Denmark
- Department of Cardiology, Herlev & Gentofte University Hospital, Copenhagen 2730, Denmark
| | - Kevin Murray
- School of Population and Global Health, University of Western Australia, Perth, Western Australia 6009, Australia
| | - Marc Sim
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia 6000, Australia
- Medical School, University of Western Australia, Perth, Western Australia 6009, Australia
| | - Bu B Yeap
- Medical School, University of Western Australia, Perth, Western Australia 6009, Australia
- Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Perth, Western Australia 6150, Australia
| | - Emma Connolly
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia 6000, Australia
| | - Lauren C Blekkenhorst
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia 6000, Australia
| | - Catherine P Bondonno
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia 6000, Australia
- Medical School, University of Western Australia, Perth, Western Australia 6009, Australia
| | - Joshua R Lewis
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia 6000, Australia
- Medical School, University of Western Australia, Perth, Western Australia 6009, Australia
- Centre for Kidney Research, Children's Hospital at Westmead, School of Public Health, Sydney Medical School, The University of Sydney, Sydney, NSW 2006, Australia
| | - Gunnar Gislason
- Department of Cardiology, Herlev & Gentofte University Hospital, Copenhagen 2730, Denmark
- The National Institute of Public Health, University of Southern Denmark, Odense 5230, Denmark
- The Danish Heart Foundation, Copenhagen 1120, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen 2200, Denmark
| | - Anne Tjønneland
- Diet, Cancer and Health, The Danish Cancer Society Research Center, Copenhagen 2100, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen 1353, Denmark
| | - Kim Overvad
- Department of Public Health, Aarhus University, Aarhus 8000, Denmark
| | - Jonathan M Hodgson
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia 6000, Australia
- Medical School, University of Western Australia, Perth, Western Australia 6009, Australia
| | - Carl Schultz
- Medical School, University of Western Australia, Perth, Western Australia 6009, Australia
- Department of Cardiology, Royal Perth Hospital, Perth, Western Australia 6000, Australia
| | - Nicola P Bondonno
- Nutrition and Biomarkers, The Danish Cancer Society Research Center, Copenhagen 2100, Denmark
- Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia 6000, Australia
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3
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Bai H, Arai H, Ikuta K, Ishikawa S, Ohtani Y, Iwashita K, Okada N, Shirakawa H, Komai M, Terada F, Obara Y. Effects of dietary vitamin K 3 supplementation on vitamin K 1 and K 2 (menaquinone) dynamics in dairy cows. Anim Sci J 2022; 93:e13680. [PMID: 35029011 DOI: 10.1111/asj.13680] [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: 09/13/2021] [Revised: 11/26/2021] [Accepted: 12/23/2021] [Indexed: 11/27/2022]
Abstract
The effect of dietary vitamin K3 (VK3) on ruminant animals is not fully investigated. The aim of this study was to examine the effects of dietary VK3 on lactation performance, rumen characteristics, and VK1 and menaquinone (MK, or VK2) dynamics in the rumen, plasma, and milk of dairy cows. Eight Holstein dairy cows in late lactation periods were used in two crossover trials including a control (nontreatment) and a 50 or 200 mg/day (d) VK3 supplementation group. After 14 days, plasma, ruminal fluid, and milk were sampled and their VK1 and MKs contents were measured using fluorescence-high-performance liquid chromatography (HPLC). Milk production was unchanged after feeding 50 mg/day VK3 but marginally decreased after feeding 200 mg/day VK3. The molar ratio of propionate in ruminal fluid was significantly increased on feeding 200 mg/day VK3. Additionally, MK-4 concentrations significantly increased in both plasma and milk after VK3 feeding (50 and 200 mg/day). In ruminal fluid, MK-4 concentrations increased after 200 mg/day VK3 feeding. These results suggest that VK3 may be a good source of MK-4, the biologically active form of VK, in Holstein dairy cows during their late lactation periods. This study provides a basis for understanding the physiological role of VK in dairy cows.
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Affiliation(s)
- Hanako Bai
- Mito Research Center, Meiji Feed Co., Ibaraki Prefecture, Japan.,Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Hokkaido, Japan
| | - Hikoji Arai
- Mito Research Center, Meiji Feed Co., Ibaraki Prefecture, Japan.,Animal Nutrition and Health, DSM Kapan K.K., Tokyo, Japan
| | - Kentarou Ikuta
- Awaji Agricultural Technology Institute, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Kobe, Japan
| | - Sho Ishikawa
- Awaji Agricultural Technology Institute, Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Kobe, Japan
| | | | | | - Nao Okada
- Laboratory of Nutrition, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Hitoshi Shirakawa
- Laboratory of Nutrition, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Michio Komai
- Laboratory of Nutrition, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Fuminori Terada
- Mito Research Center, Meiji Feed Co., Ibaraki Prefecture, Japan
| | - Yoshiaki Obara
- Mito Research Center, Meiji Feed Co., Ibaraki Prefecture, Japan
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4
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Stępień A, Koziarska-Rościszewska M, Rysz J, Stępień M. Biological Role of Vitamin K-With Particular Emphasis on Cardiovascular and Renal Aspects. Nutrients 2022; 14:262. [PMID: 35057443 PMCID: PMC8780346 DOI: 10.3390/nu14020262] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 02/07/2023] Open
Abstract
Vitamin K (VK) plays many important functions in the body. The most important of them include the contribution in calcium homeostasis and anticoagulation. Vascular calcification (VC) is one of the most important mechanisms of renal pathology. The most potent inhibitor of this process-matrix Gla protein (MGP) is VK-dependent. Chronic kidney disease (CKD) patients, both non-dialysed and hemodialysed, often have VK deficiency. Elevated uncarboxylated matrix Gla protein (ucMGP) levels indirectly reflected VK deficiency and are associated with a higher risk of cardiovascular events in these patients. It has been suggested that VK intake may reduce the VC and related cardiovascular risk. Vitamin K intake has been suggested to reduce VC and the associated cardiovascular risk. The role and possibility of VK supplementation as well as the impact of anticoagulation therapy on VK deficiency in CKD patients is discussed.
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Affiliation(s)
- Anna Stępień
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, Żeromski St. 113, 90-549 Lodz, Poland; (A.S.); (M.K.-R.); (J.R.)
| | - Małgorzata Koziarska-Rościszewska
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, Żeromski St. 113, 90-549 Lodz, Poland; (A.S.); (M.K.-R.); (J.R.)
| | - Jacek Rysz
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, Żeromski St. 113, 90-549 Lodz, Poland; (A.S.); (M.K.-R.); (J.R.)
| | - Mariusz Stępień
- Department of Propaedeutics of Internal Medicine and Social Pharmacology, Medical University of Lodz, Żeromski St. 113, 90-549 Lodz, Poland
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5
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Varsamis NA, Christou GA, Kiortsis DN. A critical review of the effects of vitamin K on glucose and lipid homeostasis: its potential role in the prevention and management of type 2 diabetes. Hormones (Athens) 2021; 20:415-422. [PMID: 33454929 DOI: 10.1007/s42000-020-00268-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 12/22/2020] [Indexed: 12/23/2022]
Abstract
In recent years, our knowledge regarding the physiological role of vitamin K has expanded beyond regulation of coagulation to include many other aspects of human health. In the present review, we aimed to evaluate the existing evidence for beneficial effects of vitamin K on type 2 diabetes and components of the metabolic syndrome as risk factors for cardiovascular disease. Increased dietary intake of vitamin K has been linked to lower incidence of type 2 diabetes mellitus (T2DM), possibly through its enhancement of insulin production and sensitivity. Additionally, higher plasma levels of vitamin K1 have been associated with lower T2DM risk and decreased insulin resistance, and supplementation trials also suggest a positive influence of vitamin K on glucose regulation. Vitamin K might also beneficially affect serum lipids and lipid metabolism. However, the available data remain controversial. Additionally, different studies use different approaches to assess vitamin K status owing to the absence of a generally accepted marker, which further complicates data evaluation. In conclusion, vitamin K possibly improves glucose and lipid metabolism and could be an emerging target in the context of prevention and control of T2DM, insulin resistance, and dyslipidemia.
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Affiliation(s)
- Nikolaos A Varsamis
- Department of Nuclear Medicine, Medical School, University of Ioannina, 45110, Ioannina, Greece
| | - Georgios A Christou
- Department of Nuclear Medicine, Medical School, University of Ioannina, 45110, Ioannina, Greece
| | - Dimitrios N Kiortsis
- Department of Nuclear Medicine, Medical School, University of Ioannina, 45110, Ioannina, Greece.
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6
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Qureshi U, Khan MI, Ashraf S, Hameed A, Hafizur RM, Rafique R, Khan KM, Ul-Haq Z. Identification of novel Epac2 antagonists through in silico and in vitro analyses. Eur J Pharm Sci 2020; 153:105492. [PMID: 32730843 DOI: 10.1016/j.ejps.2020.105492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 06/18/2020] [Accepted: 07/27/2020] [Indexed: 11/26/2022]
Abstract
cAMP-dependent guanine nucleotide exchange factor (Epac) is a key regulator in signal transduction and represents an excellent drug target to be investigated against various diseases. To date, very few modulators selective for Epac are available; however, there is still an unmet need of isoform-selective inhibitors. In the present study, ligand-based pharmacophores were designed to investigating structurally diverse molecules as Epac2 inhibitors. Pharmacophore models were developed using reported allosteric site inhibitors. The developed models were used to screen 95 thousand compounds from the National Cancer Institute (NCI), Maybride, and our in-house ICCBS Database. The binding mode and efficiency of the screened hits was investigated using molecular docking simulation on the allosteric site of Epac2 apo-protein (PDB ID: 2BYV) followed by ADMET (Absorption, Distribution, Metabolism, Excretion, and Toxicity) profiling Furthermore, obtained in silico screened hits were subjected to in vitro assay for insulin secretion. We identified, three lead molecules RDR02145, AAK-399, and AAD-026 reducing, insulin secretion. Remarkably, a higher inhibitory effect on insulin secretion was observed in AAK-399, and AAD-026 as compared to that of standard Epac2 non-competitive allosteric site inhibitor, MAY0132. Furthermore, Dynamic simulation studies of lead compounds proved the structural stability of the Epac2 auto-inhibited state. These findings underline the potential of these compounds as valuable pharmacological tools for designing future selective probes to inhibit the Epac-mediated signaling pathway.
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Affiliation(s)
- Urooj Qureshi
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - M Israr Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Sajda Ashraf
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Abdul Hameed
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Rahman M Hafizur
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Rafaila Rafique
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Khalid Mohammed Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Zaheer Ul-Haq
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan; Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan.
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7
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Ho HJ, Komai M, Shirakawa H. Beneficial Effects of Vitamin K Status on Glycemic Regulation and Diabetes Mellitus: A Mini-Review. Nutrients 2020; 12:nu12082485. [PMID: 32824773 PMCID: PMC7469006 DOI: 10.3390/nu12082485] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 12/16/2022] Open
Abstract
Type 2 diabetes mellitus is a chronic disease that is characterized by hyperglycemia, insulin resistance, and dysfunctional insulin secretion. Glycemic control remains a crucial contributor to the progression of type 2 diabetes mellitus as well as the prevention or delay in the onset of diabetes-related complications. Vitamin K is a fat-soluble vitamin that plays an important role in the regulation of the glycemic status. Supplementation of vitamin K may reduce the risk of diabetes mellitus and improve insulin sensitivity. This mini-review summarizes the recent insights into the beneficial effects of vitamin K and its possible mechanism of action on insulin sensitivity and glycemic status, thereby suppressing the progression of diabetes mellitus.
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Affiliation(s)
- Hsin-Jung Ho
- Laboratory of Nutrition, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan; (M.K.); (H.S.)
- Correspondence: ; Tel.: +81-11-706-3395
| | - Michio Komai
- Laboratory of Nutrition, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan; (M.K.); (H.S.)
| | - Hitoshi Shirakawa
- Laboratory of Nutrition, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan; (M.K.); (H.S.)
- International Education and Research Center for Food Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
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8
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Rees-Milton KJ, Norman P, Babiolakis C, Hulbert M, Turner ME, Berger C, Anastassiades TP, Hopman WM, Adams MA, Powley WL, Holden RM. Statin Use is Associated With Insulin Resistance in Participants of the Canadian Multicentre Osteoporosis Study. J Endocr Soc 2020; 4:bvaa057. [PMID: 32715271 PMCID: PMC7371386 DOI: 10.1210/jendso/bvaa057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/08/2020] [Indexed: 12/15/2022] Open
Abstract
Context Statins have been linked to the development of diabetes and atherosclerotic plaque calcification in patients with cardiac disease. Objective To determine the association between statin use and statin characteristics and insulin resistance and abdominal aortic calcification (AAC) in participants of the Canadian Multicentre Osteoporosis Study (CaMos). Design Observational study. Setting General community. Participants Nondiabetic participants of the Kingston CaMos site. Intervention Insulin resistance and AAC in statin users and nonstatin users were compared with and without the inclusion of a propensity score (PS) to be on a statin. The covariates of hypertension, sex, body mass index, smoking, kidney stones, and age that were included in the PS were selected based on clinical judgment confirmed by the statistical analysis of a difference between statin users and nonstatin users. Main Outcome Measures Insulin resistance measured by the homeostasis model assessment (HOMA-IR) and AAC assessed on lateral spine radiographs using the Framingham methodology. Results Using a general linear model, statin use was associated with higher levels of HOMA-IR after stratified PS adjustment (β = 1.52, [1.18-1.95], P < 0.01). Hydrophilic statin users (n = 9) and lipophilic statins users (n = 30) had higher HOMA-IR compared to nonstatin users (n = 125) ([β = 2.29, (1.43-3.68), P < 0.001] and [β = 1.36, (1.04-1.78), P < 0.05]), respectively, in general linear models after stratified PS adjustment. Statin use was associated with AAC without stratifying by PS in the Wilcoxon test, but was no longer significant when stratified by PS. Conclusions Statins, widely prescribed drugs to lower cholesterol, may have unintended consequences related to glucose homeostasis that could be relevant in healthy aging.
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Affiliation(s)
| | - Patrick Norman
- Kingston General Health Research Institute, Kingston, ON
| | | | - Maggie Hulbert
- Department of Medicine, Queen's University, Kingston, ON
| | - Mandy E Turner
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON
| | - Claudie Berger
- Research Institute of the McGill University Health Centre, Montreal, QC
| | - Tassos P Anastassiades
- Department of Medicine, Queen's University, Kingston, ON.,Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON
| | - Wilma M Hopman
- Kingston General Health Research Institute, Kingston, ON.,Department of Public Health Sciences, Queen's University, Kingston, ON
| | - Michael A Adams
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON
| | | | - Rachel M Holden
- Department of Medicine, Queen's University, Kingston, ON.,Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON
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9
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Thiagarajan R, Varsha MKNS, Srinivasan V, Ravichandran R, Saraboji K. Vitamin K1 prevents diabetic cataract by inhibiting lens aldose reductase 2 (ALR2) activity. Sci Rep 2019; 9:14684. [PMID: 31604989 PMCID: PMC6789135 DOI: 10.1038/s41598-019-51059-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 09/24/2019] [Indexed: 12/22/2022] Open
Abstract
This study investigated the potential of vitamin K1 as a novel lens aldose reductase inhibitor in a streptozotocin-induced diabetic cataract model. A single, intraperitoneal injection of streptozotocin (STZ) (35 mg/kg) resulted in hyperglycemia, activation of lens aldose reductase 2 (ALR2) and accumulation of sorbitol in eye lens which could have contributed to diabetic cataract formation. However, when diabetic rats were treated with vitamin K1 (5 mg/kg, sc, twice a week) it resulted in lowering of blood glucose and inhibition of lens aldose reductase activity because of which there was a corresponding decrease in lens sorbitol accumulation. These results suggest that vitamin K1 is a potent inhibitor of lens aldose reductase enzyme and we made an attempt to understand the nature of this inhibition using crude lens homogenate as well as recombinant human aldose reductase enzyme. Our results from protein docking and spectrofluorimetric analyses clearly show that vitamin K1 is a potent inhibitor of ALR2 and this inhibition is primarily mediated by the blockage of DL-glyceraldehyde binding to ALR2. At the same time docking also suggests that vitamin K1 overlaps at the NADPH binding site of ALR2, which probably shows that vitamin K1 could possibly bind both these sites in the enzyme. Another deduction that we can derive from the experiments performed with pure protein is that ALR2 has three levels of affinity, first for NADPH, second for vitamin K1 and third for the substrate DL-glyceraldehyde. This was evident based on the dose-dependency experiments performed with both NADPH and DL-glyceraldehyde. Overall, our study shows the potential of vitamin K1 as an ALR2 inhibitor which primarily blocks enzyme activity by inhibiting substrate interaction of the enzyme. Further structural studies are needed to fully comprehend the exact nature of binding and inhibition of ALR2 by vitamin K1 that could open up possibilities of its therapeutic application.
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Affiliation(s)
- R Thiagarajan
- School of Chemical & Biotechnology, SASTRA University, Tamil Nadu, India.
- Department of Advanced Zoology & Biotechnology, Ramakrishna Mission Vivekananda College, Mylapore, Chennai, 600004, India.
| | - M K N Sai Varsha
- Department of Biotechnology, Indian Institute of Technology, Madras, Chennai, 600036, India
| | - V Srinivasan
- Disease Program Lead - Diabetes, MedGenome Inc., Bangalore, India
| | - R Ravichandran
- Diabetes Research Program, Division of Endocrinology, Department of Medicine, NYU Langone Medical Center, New York, NY, 10016, USA
| | - K Saraboji
- School of Chemical & Biotechnology, SASTRA University, Tamil Nadu, India
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