GENDER-DEPENDENT HEMOSTASIS PROFILE IN APPARENTLY HEALTHY YOUNG PEOPLE

Author(s):  
V.V. Maslyakov ◽  
O.N. Pavlova ◽  
N.N. Fedotova ◽  
Yu.V. Fokht ◽  
T.S. Kiriyazi

The objective of the study is to reveal the parameters of red blood cells, rheology, endothelin level, Willebrand factor, tPA-PAI-1 complex, antithrombin III, procoagulantive mechanisms of the hemostatic system and fibrinogen in medical students in the process of learning, taking into account gender differences. Materials and Methods. We examined 100 relatively healthy people (50 men and 50 women who did not have any complaints, were not under regular medical check-up, and did not have any proven diagnoses). The absence of diseases was confirmed by medical documentation, since all study participants underwent an annual preventive examination for admission to study. The volunteers were 18–30 years old. Results. Women had a higher endothelin level if compared with healthy men, which led to less powerful vasoconstriction and increased procoagulant blood activity. At the same time, higher levels of both procoagulant, anticoagulant and fibrinolytic blood activity were recorded. A significantly lower concentration of the tPA-PAI-1 complex and a change in the vWF index were also noted. In addition, relatively healthy women showed greater activity of VIIIa factor, higher resistance of Va factor to active protein C, and significantly higher fibrin content if compared with healthy men. Key words: sex differences, rheology, endothelin level, Willebrand factor, tPA-PAI-1 complex, AT III, procoagulantive mechanisms of the hemostatic system and fibrinogen. Цель. Выявить особенности показателей красной крови, реологии, уровня эндотелина, фактора Виллебранда, комплекса tPA-PAI-1, антитромбина III, прокоагулянтных механизмов системы гемостаза и фибриногена у студентов медицинских вузов с учетом половых различий в процессе обучения. Материалы и методы. Было обследовано 100 относительно здоровых (не предъявлявших жалоб, не состоявших на диспансерном учете и не имевших установленных диагнозов) человек (50 мужчин и 50 женщин). Отсутствие заболеваний подтверждалось медицинской документацией, так как все участники исследования проходили ежегодный профилактический осмотр для допуска к учебе. Возраст добровольцев составлял от 18 лет до 30 лет. Результаты. У женщин отмечался более высокий уровень эндотелина по сравнению со здоровыми мужчинами, что приводило к менее мощной вазоконстрикции и усилению прокоагулянтной активности крови. При этом были зарегистрированы более высокие значения как прокоагулянтной, так и противосвертывающей и фибринолитической активности крови. Одновременно с этим отмечена достоверно более низкая концентрация комплекса tPA-PAI-1, изменение показателя vWF. Кроме того, у относительно здоровых женщин была зафиксирована большая активность фактора VIIIа, более высокая резистентность фактора Vа к активному протеину С, а также достоверно более высокое содержание фибрина по сравнению со здоровыми мужчинами. Ключевые слова: половые различия, реология, уровень эндотелина, фактор Виллебранда, комплекс tPA-PAI-1, АТ III, прокоагулянтные механизмы системы гемостаза и фибриногена.

2019 ◽  
Vol 23 (2) ◽  
pp. 77-81
Author(s):  
E. N. Borisov ◽  
L. V. Ivanitsky ◽  
L. M. Samokhodskaya ◽  
T. N. Krasnova ◽  
E. P. Pavlikova ◽  
...  

THE AIM: to evaluate the effect of allelic variations in the hemostatic system genes on the development and course of lupus nephritis. PATIENTS AND METHODS. The study analyzed 100 patients with SLE Caucasians. 80 women and 20 men aged 16 to 73 years (mean age 37, ± 14 years). The duration of observation was for 73 patients over 5 years, for 18 – from 1 year to 5 years and for 9 – less than 1 year A rise in the level of creatinine in the blood above or equal to 2 mg / dl was considered a significant sign of impaired renal function. RESULTS. Among the patients included in the study, kidney damage was detected in 61 people (61%). In 33 of them (54.1%), a variant of renal pathology was observed according to the type of rapidly progressive lupus nephritis (BPVN). In patients with BH, mutations in the MTHFR (C677T) gene were statistically significantly more frequent (p = 0.033). The OR for the mutant genotype is 6.146 with 95% CI from 1.692 to 22.326. In patients with PWHD, mutations in the MTHFR (C677T) gene were statistically significantly more frequent (p = 0.031). The OR for the mutant genotype is 1.625 with 95% CI from 1.034 to 4.771. The five-year renal survival in carriers of the mutant allele of the MTHFR gene (C677T) is statistically significantly lower (72.8%) than in patients without this mutation (81.9%) (p = 0.027). Ten-year renal survival in carriers of the mutant allele of the MTHFR gene (C677T) is statistically significantly less (55.6%) than in patients without this mutation (70.5%) (p = 0.016). In patients with BH, mutations in the PAI-1 gene (4G / 5G 675) were statistically significantly more frequent (p = 0.046). OR for mutant genotype – 1.766 with 95% CI from 1.061 to 4.758. CONCLUSION. The mutant alleles of the MTHFR (C677T) and PAI-1 (4G / 5G 675) genes are likely to be associated with the development of BH. Polymorphism of the MTHFR gene (C677T) is associated with an unfavorable course of HH.


1995 ◽  
Vol 332 (14) ◽  
pp. 912-917 ◽  
Author(s):  
Paul M. Ridker ◽  
Charles H. Hennekens ◽  
Klaus Lindpaintner ◽  
Meir J. Stampfer ◽  
Paul R. Eisenberg ◽  
...  

2017 ◽  
Vol 263 ◽  
pp. e271 ◽  
Author(s):  
Mirjana Djeric ◽  
Branislava Ilincic ◽  
Velibor Cabarkapa ◽  
Isidora Radosavkic ◽  
Aleksandra Trifu ◽  
...  

2007 ◽  
Vol 63 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Petra H. Wirtz ◽  
Ulrike Ehlert ◽  
Luljeta Emini ◽  
Katharina Rüdisüli ◽  
Sara Groessbauer ◽  
...  

2020 ◽  
Vol 59 (8) ◽  
pp. 3581-3590 ◽  
Author(s):  
Urban Alehagen ◽  
J. Alexander ◽  
J. Aaseth ◽  
A. Larsson ◽  
T. L. Lindahl

Abstract Purpose Endothelial dysfunction and inflammation are conditions which fuel atherosclerosis and ischaemic heart disease. We have previously reported reduced cardiovascular (CV) mortality following supplementation with selenium and coenzyme Q10 to 443 elderly individuals with low selenium status (mean 67 μg/L) for 4 years. Here, we wanted to evaluate a possible association between the supplementation and the plasma concentrations of the von Willebrand factor (vWf), and the plasminogen activator inhibitor-1 (PAI-1), as they, besides other functions, are also strongly associated with endothelial function. Methods In this sub-study, 308 individuals (active substance: 157, placebo: 151) were included. Blood samples were drawn after 6 and 36 months and vWf and PAI-1 were determined in plasma by ELISA. Changes in concentrations of the biomarkers were evaluated by the use of T tests, repeated measures of variance, and ANCOVA analyses. Results The active treatment group presented a lower level of vWf after 36 months compared with the placebo group (1.08 U/mL vs. 5.10 U/mL; p = 0.0007). The results were validated through the repeated measures of variance evaluation. The PAI-1 levels showed an equally significant decrease in the active group (26.2 ng/mL vs. 49.2 ng/mL; p = 0.0002) and were also validated through repeated measures of variance evaluation. Conclusion In this sub-study on elderly receiving selenium and coenzyme Q10, or placebo we found significantly lower levels of vWf and PAI-1 in the active treatment group as compared to the placebo group. We interpret this as a better endothelial function because of the intervention, which accords with a previous finding of reduced CV mortality.


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