Thyroid hormones are essential for body homeostasis. The scientific literature contains restricted proofs for effects of environmental chemical factors on thyroid function. The present study aimed at evaluating the relationship between toxicological parameters and concentration of thyrotropic hormone in persons occupationally exposed to lead, cadmium and arsenic. The studies were conducted on 102 consecutive workers occupationally exposed to lead, cadmium and arsenic (mean age 45.08 ± 9.87 years). The estimated parameters characterizing occupational exposure to metals included blood cadmium concentration (Cd-B), blood lead concentration (Pb-B), blood zinc protoporphyrin concentration (ZnPP) and urine arsenic concentration (As-U). Thyroid function was evaluated using the parameter employed in screening studies, the blood thyrotropic hormone concentration (TSH). No differences were disclosed in mean values of toxicological parameters between the subgroup of persons occupationally exposed to lead, cadmium and arsenic with TSH in and out of the accepted normal values. Logistic regression demonstrated that higher blood total bilirubin concentrations (ORu = 4.101; p = 0.025) and higher Cd-B (ORu = 1.532; p = 0.027) represented independent risk factors of abnormal values of TSH in this group. In conclusion, in the group of workers exposed to lead, cadmium and arsenic, higher blood cadmium concentration seems to augment the risk of abnormal hormonal thyroid function.
Gać P, Poręba M, Jurdziak M, et al. Cardiovascular risk factors and the concentration of asymmetric dimethylarginine Adv Clin Exp Med. AbstractBackground. The most commonly recognized cardiovascular risk factors (CVRF) include smoking cigarettes, manifestation of arterial hypertension (AH), hypercholesterolemia, hypertriglyceridemia, manifestation of type 2 diabetes mellitus (DM), and the presence of overweight or obesity. In recent years, investigations have documented the significance of asymmetric dimethylarginine concentration (ADMA) in the pathogenesis of diseases affecting the cardiovascular system. Objectives.To evaluate the relationship between the number of CVRF and blood ADMA concentration.Material and methods. The study was conducted on a sample of 138 individuals (mean age 54.90 ±10.38 years). Among the participants, we distniguished subgroups with no CVRF (group A, n = 21), with 1-2 CVRF (group B, n = 53), with 3-4 CVRF (group C, n = 55), and with 5-6 CVRF (group D, n = 9). Plasma concentrations of arginine and of endogenous methylarginines were estimated.Results. Plasma ADMA concentrations proved to be significantly higher in groups B, C and D than those in group A. Regression analysis allowed us to demonstrate that in the studied population of patients, manifestation of type 2 DM, followed by AH and hypercholesterolemia, were linked to the highest probability of elevated plasma ADMA concentration. Conclusions.Higher concentration of ADMA in the blood may be a marker for higher cardiovascular risk, especially associated with hypertension, type 2 DM and hypercholesterolemia.
A -przygotowanie projektu badania, B -zbieranie danych, C -analiza statystyczna, D -interpretacja danych, E -przygotowanie maszynopisu, F -opracowanie piśmiennictwa, G -pozyskanie funduszy Nadciśnienie tętnicze dotyczy około 77% pacjentów z pierwszym udarem mózgu. W przeciwieństwie do uznanych korzyści z obniżania ciśnienia tętniczego w ramach profilaktyki pierwotnej i wtórnej udaru nadal kontrowersyjne pozostaje postępowanie w ostrej fazie udaru. ABPM jest narzędziem diagnostycznym pozwalającym na bardziej wiarygodną w stosunku do pomiarów gabinetowych ocenę wartości BP, uzyskiwanie precyzyjnych informacji co do wartości BP w godzinach nocnych, w czasie codziennej aktywności, a także na ocenę dobowego rytmu ciśnienia tętniczego oraz jego krótko-i długo-okresowej zmienności. Obecnie dysponujemy wynikami kilkudziesięciu badań wskazujących na lepsze znaczenie prognostyczne ABPM w stosunku do pomiarów tradycyjnych w stratyfikacji ryzyka sercowo-naczyniowego, a także przewidywaniu powikłań narządowych nadciśnienia. Zastosowanie ABPM u chorych ze świeżym udarem wymaga dalszych badań. Stwierdzono m.in. że zarówno wysokie, jak i niskie wartości ciśnienia tętniczego w ostrej fazie udaru (oceniane w ABPM, ale nie w pomiarach tradycyjnych), brak nocnego spadku BP, a także wzrost krótko-i długookresowej zmienności powiązane były ze zwiększoną śmiertelnością i gorszym rokowaniem co do powrotu funkcji neurologicznych. Te wnioski wskazują na istotne znaczenie wnikliwej oceny wartości BP we wczesnej fazie udaru oraz na to, że pojedynczy pomiar ciśnienia może się okazać niewystarczający jako czynnik prognostyczny, i tym samym sugerują kliniczną użyteczność ABPM u pacjentów ze świe-żym udarem mózgu. Słowa kluczowe: udar mózgu, nadciśnienie tętnicze, ABPM.Hypertension is present in about 77% of patients with a first episode of stroke. Unlike the established benefit of lowering blood pressure for the primary and secondary prevention of stroke, the management of hypertension in patients with acute stroke remains controversial. ABPM is a diagnostic tool that has been proposed as a method of obtaining a more reliable assessment of patients' blood pressure in comparison with OBPM. ABPM provides precise information about the BP values during the daily activity, during the night period, additionally, about the circadian rhythm of blood pressure and also about the short-and long-term blood pressure variability. There have been several studies that have shown a superior prognostic value of ABPM measurements compared with OBPM in predicting the incidence of CV events. ABPM values were also more closely associated with subclinical organ damage. Simultaneously, more studies are needed to assess the significance of ABPM in patients with acute stroke. Data from many observational studies have suggested that both high and low BP values in the acute phase of stroke (assessed in ABPM, but not in conventional measurements), reduced nocturnal BP fall and increased short-term and long-term BP variability are associated with poorer prognosis in terms...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.