scholarly journals Аnti-inflammatory effects of vitamin K on women's health

2019 ◽  
Vol 68 (5) ◽  
pp. 107-114
Author(s):  
Valeria A. Zagaynova ◽  
Olesya N. Bespalova
Keyword(s):  
Vitamin K ◽  
Human Body ◽  
Experimental Studies ◽  
Research Data ◽  
Vitamin K Cycle ◽  
Increased Risk ◽  
Positive Effect ◽  
Overall Mortality

This article presents the latest research data on the role of vitamin K in the implementation of its multiple non-classical extra-coagulation effects associated with the regulation of a number of physiological and pathological processes in the human body. In recent years, numerous studies have been performed on vitamin K function to better understand the effects of this micronutrient and its significance in various biological reactions. Vitamin K is well known to be a cofactor of the -carboxylation of a number of proteins, which is necessary for their activation and is part of the so-called vitamin K cycle. The cycle enzymes, metabolites and vitamin K-dependent proteins are identified and expressed in many cells and tissues of the human body: skin, lungs, liver, kidneys, vascular endothelium, nervous and bone tissues, reproductive (endometrium, ovaries, placenta) and immune systems. There were analyzed the main mechanisms of vitamin K action through vitamin K-dependent proteins. The results of epidemiological and experimental studies prove the association of reduced vitamin K levels with the increased risk of cardiovascular diseases, overall mortality, insulin resistance, metabolic syndrome, type 2 diabetes mellitus, progression of rheumatoid arthritis and osteoporosis. On the contrary, vitamin K increased intake has a positive effect on the immune and nervous systems, as well as on a number of other somatic pathologies, including breakdowns in the reproductive sphere. These data confirm the multifunctional role of vitamin K in various organs and systems of organism, presenting as high potential further studies in the field of determining vitamin K levels.

Mechanisms underlying heart failure in type 2 diabetes mellitus

2019 ◽  
pp. 37-39
Keyword(s):  
Diabetes Mellitus ◽  
Heart Failure ◽  
Experimental Studies ◽  
Vascular Complications ◽  
Molecular Alterations ◽  
Increased Risk ◽  
Cardioprotective Effects ◽  
Underlying Mechanisms ◽  
Cardio Vascular

The prevalence of heart failure is markedly increased in individuals with diabetes mellitus. Numerous observational studies suggest that this increased risk for heart failure can be attributed to exacerbated vascular complications and the presence of increased risk factors in diabetic subjects. In addition, experimental studies revealed the presence of a number of distinct molecular alterations in the myocardium that occur independently of vascular disease and hypertension. Many of these molecular alterations are similarly observed in failing hearts of nondiabetic patients and have thus been proposed to contribute to the increased risk for heart failure in diabetes. The interest in understanding the underlying mechanisms of impaired cardio- vascular outcomes in diabetic individuals has much increased since the demonstration of cardioprotective effects of SGLT-2 inhibitors and GLP-1 receptor agonists in recent clinical trials. The current review therefore summarizes the distinct mechanisms that have been proposed to increase the risk for heart failure in diabetes mellitus.

The GSTM1 and GSTT1 Null Genotypes Increase the Risk for Type 2 Diabetes Mellitus and the Subsequent Development of Diabetic Complications: A Meta-analysis

2018 ◽  
Vol 15 (1) ◽  
pp. 31-43 ◽  
Author(s):  
Sayantan Nath ◽  
Sambuddha Das ◽  
Aditi Bhowmik ◽  
Sankar Kumar Ghosh ◽  
Yashmin Choudhury
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Meta Analysis ◽  
Subsequent Development ◽  
Asian Population ◽  
Gstm1 Null Genotype ◽  
Increased Risk

Background:Studies pertaining to association of GSTM1 and GSTT1 null genotypes with risk of T2DM and its complications were often inconclusive, thus spurring the present study.Methods:Meta-analysis of 25 studies for evaluating the role of GSTM1/GSTT1 null polymorphisms in determining the risk for T2DM and 17 studies for evaluating the role of GSTM1/GSTT1 null polymorphisms in development of T2DM related complications were conducted.Results:Our study revealed an association between GSTM1 and GSTT1 null polymorphism with T2DM (GSTM1; OR=1.37;95% CI =1.10-1.70 and GSTT1; OR=1.29;95% CI =1.04-1.61) with an amplified risk of 2.02 fold for combined GSTM1-GSTT1 null genotypes. Furthermore, the GSTT1 null (OR=1.56;95%CI=1.38-1.77) and combined GSTM1-GSTT1 null genotypes (OR=1.91;95%CI=1.25- 2.94) increased the risk for development of T2DM related complications, but not the GSTM1 null genotype. Stratified analyses based on ethnicity revealed GSTM1 and GSTT1 null genotypes increase the risk for T2DM in both Caucasians and Asians, with Asians showing much higher risk of T2DM complications than Caucasians for the same. </P><P> Discussion: GSTM1, GSTT1 and combined GSTM1-GSTT1 null polymorphism may be associated with increased risk for T2DM; while GSTT1 and combined GSTM1-GSTT1 null polymorphism may increase the risk of subsequent development of T2DM complications with Asian population carrying an amplified risk for the polymorphism.Conclusion:Thus GSTM1 and GSTT1 null genotypes increases the risk for Type 2 diabetes mellitus alone, in combination or with regards to ethnicity.

Role of Circulating Microparticles in Type 2 Diabetes Mellitus: Implications for Pathological Clotting

2021 ◽  
Author(s):  
Siphosethu Cassandra Maphumulo ◽  
Etheresia Pretorius
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Systemic Inflammation ◽  
Blood Cells ◽  
Low Grade ◽  
Chronic Hyperglycemia ◽  
Increased Risk

AbstractType 2 diabetes mellitus (T2DM) is a multifactorial chronic metabolic disease characterized by chronic hyperglycemia due to insulin resistance and a deficiency in insulin secretion. The global diabetes pandemic relates primarily to T2DM, which is the most prevalent form of diabetes, accounting for over 90% of all cases. Chronic low-grade inflammation, triggered by numerous risk factors, and the chronic activation of the immune system are prominent features of T2DM. Here we highlight the role of blood cells (platelets, and red and white blood cells) and vascular endothelial cells as drivers of systemic inflammation in T2DM. In addition, we discuss the role of microparticles (MPs) in systemic inflammation and hypercoagulation. Although once seen as inert by-products of cell activation or destruction, MPs are now considered to be a disseminated storage pool of bioactive effectors of thrombosis, inflammation, and vascular function. They have been identified to circulate at elevated levels in the bloodstream of individuals with increased risk of atherothrombosis or cardiovascular disease, two significant hallmark conditions of T2DM. There is also general evidence that MPs activate blood cells, express proinflammatory and coagulant effects, interact directly with cell receptors, and transfer biological material. MPs are considered major players in the pathogenesis of many systemic inflammatory diseases and may be potentially useful biomarkers of disease activity and may not only be of prognostic value but may act as novel therapeutic targets.

VKORC1 deficiency in mice causes early postnatal lethality due to severe bleeding

2009 ◽  
Vol 101 (06) ◽  
pp. 1044-1050 ◽  
Author(s):  
Gabriele Spohn ◽  
Andre Kleinridders ◽  
F. Thomas Wunderlich ◽  
Matthias Watzka ◽  
Frank Zaucke ◽  
...  
Keyword(s):  
Vitamin K ◽  
Knockout Mice ◽  
Severe Bleeding ◽  
Clotting Factors ◽  
Vitamin K Cycle ◽  
Severe Deficiency ◽  
Epoxide Reductase ◽  
Bone Calcification

SummaryVitamin K hydroquinone is oxidised to the epoxide form (K>O) during vitamin K-dependent posttranslational γ-glutamyl carboxylation resulting in biological active so called vitamin K-dependent proteins. In turn, K>O is reduced by the enzyme VKORC1 (vitamin K epoxide reductase complex component 1) to complete the vitamin K cycle. To investigate the biological role of VKORC1 in vivo, we generated VKORC1 knockout mice. Homozygous VKORC1-deficient mice developed normally until birth. Within 2–20 days after birth, the knockout mice died due to extensive, predominantly intracerebral haemorrhage. Bleeding resulted from a severe deficiency of γ-carboxylated clotting factors. This lethal phenotype could be rescued by oral administration of vitamin K. Additionally, morphometric analysis of the limbs in VKORC1-deficient animals revealed reduced length of bone calcification relative to wild-type control mice. The observed phenotype of VKORC1 knockout mice excludes the existence of other enzymes with VKOR activity that can substitute to supply vitamin K hydroquinone required for maturation of blood clotting factors. Thus, our study underscores the essential role of VKORC1 in vitamin K-dependent γ-glutamyl carboxylation.

scholarly journals Triglyceride-containing lipoprotein sub-fractions and risk of coronary heart disease and stroke: A prospective analysis in 11,560 adults

2020 ◽  
Vol 27 (15) ◽  
pp. 1617-1626 ◽  
Author(s):  
Roshni Joshi ◽  
S Goya Wannamethee ◽  
Jorgen Engmann ◽  
Tom Gaunt ◽  
Deborah A Lawlor ◽  
...  
Keyword(s):  
Coronary Heart Disease ◽  
Heart Disease ◽  
Odds Ratio ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Lipoprotein Cholesterol ◽  
Increased Risk ◽  
The Individual

Aims Elevated low-density lipoprotein cholesterol (LDL-C) is a risk factor for cardiovascular disease; however, there is uncertainty about the role of total triglycerides and the individual triglyceride-containing lipoprotein sub-fractions. We measured 14 triglyceride-containing lipoprotein sub-fractions using nuclear magnetic resonance and examined associations with coronary heart disease and stroke. Methods Triglyceride-containing sub-fraction measures were available in 11,560 participants from the three UK cohorts free of coronary heart disease and stroke at baseline. Multivariable logistic regression was used to estimate the association of each sub-fraction with coronary heart disease and stroke expressed as the odds ratio per standard deviation increment in the corresponding measure. Results The 14 triglyceride-containing sub-fractions were positively correlated with one another and with total triglycerides, and inversely correlated with high-density lipoprotein cholesterol (HDL-C). Thirteen sub-fractions were positively associated with coronary heart disease (odds ratio in the range 1.12 to 1.22), with the effect estimates for coronary heart disease being comparable in subgroup analysis of participants with and without type 2 diabetes, and were attenuated after adjustment for HDL-C and LDL-C. There was no evidence for a clear association of any triglyceride lipoprotein sub-fraction with stroke. Conclusions Triglyceride sub-fractions are associated with increased risk of coronary heart disease but not stroke, with attenuation of effects on adjustment for HDL-C and LDL-C.

scholarly journals Autoantibodies and the Risk of Cardiovascular Events

2009 ◽  
Vol 36 (11) ◽  
pp. 2462-2469 ◽  
Author(s):  
KIMBERLY P. LIANG ◽  
HILAL MARADIT-KREMERS ◽  
CYNTHIA S. CROWSON ◽  
MELISSA R. SNYDER ◽  
TERRY M. THERNEAU ◽  
...  
Keyword(s):  
Rheumatic Diseases ◽  
Population Based ◽  
Cox Models ◽  
Diagnostic Indices ◽  
Increased Risk ◽  
Peptide Antibody ◽  
Cv Disease ◽  
Citrullinated Peptide ◽  
Overall Mortality

Objective.Inflammation and autoimmunity are associated with increased cardiovascular (CV) risk in patients with rheumatoid arthritis. This association may also be present in those without rheumatic diseases. Our purpose was to determine whether rheumatoid factor (RF), antinuclear antibody (ANA), and cyclic citrullinated peptide antibody (CCP) positivity are associated with increased risk of CV events and overall mortality in those with and without rheumatic diseases.Methods.We performed a population-based cohort study of all subjects who had a RF and/or ANA test performed between January 1, 1990, and January 1, 2000, and/or CCP test performed between September 1, 2003, and January 1, 2005, with followup until April 1, 2007. Outcomes were ascertained using diagnostic indices from complete medical records, including CV events [myocardial infarction (MI), heart failure (HF), and peripheral vascular disease (PVD)] and mortality. Cox models were used to analyze the data.Results.There were 6783 subjects with RF, 7852 with ANA, and 299 with CCP testing. Of these, 10.4%, 23.9%, and 14.7% were positive for RF, ANA, and CCP, respectively. Adjusting for age, sex, calendar year, comorbidity, and rheumatic disease, RF and ANA positivity were significant predictors of CV events [hazard ratio (HR) 1.24 and 1.26] and death (HR 1.43 and 1.18). Adjusting for age, CCP positivity was associated with CV events, but this association was not statistically significant (HR 3.1; 95% CI 0.8, 12.3).Conclusion.RF and ANA positivity are significant predictors of CV events and mortality in both those with and those without rheumatic diseases. These results support the role of immune dysregulation in the etiology of CV disease.

scholarly journals Nutrients and Immunometabolism: Role of Macrophage NLRP3

2020 ◽  
Vol 150 (7) ◽  
pp. 1693-1704
Author(s):  
Kate J Claycombe-Larson ◽  
Travis Alvine ◽  
Dayong Wu ◽  
Nishan S Kalupahana ◽  
Naima Moustaid-Moussa ◽  
...  
Keyword(s):  
Nlrp3 Inflammasome ◽  
Tissue Cell ◽  
Cell Functions ◽  
Pyrin Domain ◽  
Increased Risk ◽  
Vital Cell ◽  
Cell Type Specific ◽  
Specific Regulation

ABSTRACT Inflammation is largely mediated by immune cells responding to invading pathogens, whereas metabolism is oriented toward producing usable energy for vital cell functions. Immunometabolic alterations are considered key determinants of chronic inflammation, which leads to the development of chronic diseases. Studies have demonstrated that macrophages and the NOD-, LRR-, and pyrin domain-containing protein 3 (NLRP3) inflammasome are activated in key metabolic tissues to contribute to increased risk for type 2 diabetes mellitus, Alzheimer disease, and liver diseases. Thus, understanding the tissue-/cell-type–specific regulation of the NLRP3 inflammasome is crucial for developing intervention strategies. Currently, most of the nutrients and bioactive compounds tested to determine their inflammation-reducing effects are limited to animal models. Future studies need to address how dietary compounds regulate immune and metabolic cell reprograming in humans.

scholarly journals Cardiovascular risks and bleeding with non-vitamin K antagonist oral anticoagulant versus warfarin in patients with type 2 diabetes: a tapered matching cohort study

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Dahai Yu ◽  
Zhanzheng Zhao ◽  
David Simmons
Keyword(s):  
Type 2 Diabetes ◽  
Vitamin K ◽  
Oral Anticoagulant ◽  
Large Scale ◽  
Vitamin K Antagonist ◽  
Exact Matching ◽  
Entropy Balancing ◽  
Risk Of Bleeding ◽  
Increased Risk

Abstract Background We compared the risk of bleeding and cardiovascular disease (CVD) events between non-vitamin K antagonist oral anticoagulant (NOAC) and warfarin in people with type 2 diabetes (T2DM). Methods 862 Incident NOAC users and 626 incident warfarin users with T2DM were identified from within 40 UK general practice (1/4/2017–30/9/2018). Outcomes included incident hospitalisation for bleeding, CVD and re-hospitalisation for CVD within 12 months since first anticoagulant prescription, identified from linked hospitalisation data. A tapered matching method was applied to form comparison cohorts: coarsened exact matching restricted the comparison to areas of sufficient overlap in missingness and characteristics: (i) demographic characteristics; (ii) clinical measurements; (iii) prior bleeding and CVD history; (iv) prescriptions with bleeding; (v) anti-hypertensive treatment(s); (vi) anti-diabetes treatment(s). Entropy balancing sequentially balanced NOAC and warfarin users on their distribution of (i–vi). Weighted logistic regression modelling estimated outcome odds ratios (ORs), using entropy balancing weights from steps i–vi. Results The 12-month ORs of bleeding with NOAC (n = 582) vs matched/balanced warfarin (n = 486) were 1.93 (95% confidence interval 0.97–3.84), 2.14 (1.03–4.44), 2.31 (1.10–4.85), 2.42 (1.14–5.14), 2.41 (1.12–5.18), and 2.51 (1.17–5.38) through steps i–vi. ORs for CVD re-hospitalisation was increased with NOAC treatment through steps i–vi: 2.21 (1.04–4.68), 2.13 (1.01–4.52), 2.47 (1.08–5.62), 2.46 (1.02–5.94), 2.51 (1.01–6.20), and 2.66 (1.02–6.94). Conclusions Incident NOAC use among T2DM is associated with increased risk of bleeding hospitalisation and CVD re-hospitalisation compared with incident warfarin use. For T2DM, caution is required in prescribing NOACs as first anticoagulant treatment. Further large-scale replication studies in external datasets are warranted.

scholarly journals The Long and Short of It: The Role of Telomeres in Fetal Origins of Adult Disease

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Stephanie E. Hallows ◽  
Timothy R. H. Regnault ◽  
Dean H. Betts
Keyword(s):  
Intrauterine Growth Restriction ◽  
The Body ◽  
Premature Aging ◽  
Fetal Origins ◽  
Maternal Malnutrition ◽  
Adult Disease ◽  
Increased Risk

Placental insufficiency, maternal malnutrition, and other causes of intrauterine growth restriction (IUGR) can significantly affect short-term growth and long-term health. Following IUGR, there is an increased risk for cardiovascular disease and Type 2 Diabetes. The etiology of these diseases is beginning to be elucidated, and premature aging or cellular senescence through increased oxidative stress and DNA damage to telomeric ends may be initiators of these disease processes. This paper will explore the areas where telomere and telomerase biology can have significant effects on various tissues in the body in IUGR outcomes.

The Challenge of Lipid Management in Patients with Diabetes or Other Endocrine Disorders

2010 ◽  
Vol 7 (2) ◽  
pp. 92
Author(s):  
Alberico L Catapano ◽  
Liliana Grigore ◽  
Angela Pirillo ◽  
◽  
◽  
...  
Keyword(s):  
Statin Therapy ◽  
Meta Analysis ◽  
Diabetic Patients ◽  
Endocrine Disorders ◽  
Lipid Management ◽  
Increased Risk ◽  
Patients With Diabetes ◽  
Associated Risk Factors

Diabetes increases the risk of developing cardiovascular disease (CVD), and several guidelines suggest that subjects with diabetes are at high risk of developing CVD. The increased risk can be attributed, at least in part, to associated risk factors, including hypertension and dyslipidaemia. The role of statins in primary and secondary prevention of CVD is well established, and the positive effect has been clearly demonstrated also in patients with type 2 diabetes. A number of studies have evaluated the effect of statin therapy on incident CVD and shown that statin therapy produces a great reduction in cardiovascular risk, but a recent meta-analysis revealed a slight increase in the risk of developing diabetes. Such risk is, however, low, especially when compared with the reduction in cardiovascular events and should not interfere with the choice of treating diabetic patients with a cholesterol-lowering therapy.

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