نتایج جستجو برای: urine hg ratio

تعداد نتایج: 588669  

Journal: :Pediatric dentistry 1999
D C Dilley J W Bawden

PURPOSE Dental amalgam restorations provide a potential source for mercury (Hg) exposure in children. This study explored the possibility that Hg levels in dentin of exfoliated primary maxillary canines could detect cumulative Hg exposure from amalgam restorations in a sample of North Carolina children. METHODS Twenty-seven exfoliated maxillary canines from 3.3 children, without restorations ...

Journal: :European Heart Journal 2021

Abstract Introduction Obesity is a potent risk factor for the development of kidney disease (CKD). The localization adipose tissue and its hormonal activity plays an important role in formation cardiorenal relationship. Purpose work To assess relationship between visceral fat stores with tissue, metabolic parameters markers renal dysfunction patients borderline arterial hypertension (AH) obesit...

2006
Chunying Chen Hongwei Yu Jiujiang Zhao Bai Li Liya Qu Shuiping Liu Peiqun Zhang Zhifang Chai

Many studies have found that mercury (Hg) exposure is associated with selenium (Se) accumulation in vivo. However, human studies are limited. To study the interaction between Se and Hg, we investigated the total Se and Hg concentrations in body fluids and serum Se-containing proteins in individuals exposed to high concentrations of Hg. Our objective was to elucidate the possible roles of serum ...

Journal: :British journal of industrial medicine 1993
A Cárdenas H Roels A M Bernard R Barbon J P Buchet R R Lauwerys J Roselló G Hotter A Mutti I Franchini

Several markers of renal changes have been measured in a cohort of 50 workers exposed to elemental mercury (Hg) and in 50 control workers. After application of selection criteria 44 exposed and 49 control workers were retained for the final statistical analysis. Exposed workers excreted on average 22 micrograms Hg/g creatinine and their mean duration of exposure was 11 years. Three types of ren...

Journal: :International journal of occupational medicine and environmental health 2007
Małgorzata Trzcinka-Ochocka Artur Gazewski Renata Brodzka

OBJECTIVES The study aimed at assessing the effect of low-level exposure to mercury (Hg) vapor from amalgam fillings among dental surgery staff in the city of Łódź, Poland. MATERIALS AND METHODS The study group was composed of 51 workers (mean age, 39.25+/-11.05 years) employed in dental surgeries; the control group comprised 16 white-collar workers (mean age, 40.05+/-10.57 years) of the Nofe...

Journal: :Environmental health and preventive medicine 2007
Mineshi Sakamoto Xinbin Feng Ping Li Guangle Qiu Hongmei Jiang Minoru Yoshida Toyoto Iwaia Xiao-Jie Liu Katsuyuki Murata

OBJECTIVE The aim of this study was to determine the level of exposure of mercury (Hg) miners and smelter workers to elemental mercury (Hg(0)) vapor in China, who work in Hg mines without using protective equipment against Hg(0) vapor. In addition, the level of methylmercury (MeHg) intake by the workers was estimated from the MeHg concentration in their hair. METHODS Urinary total mercury (TH...

Journal: :acta medica iranica 0
laleh eslamian department of obstetrics and gynecology, shariati hospital, tehran university of medical sciences, tehran, iran. fariba behnam department of obstetrics and gynecology, shariati hospital, tehran university of medical sciences, tehran, iran. zahra foroohesh tehrani department of clinical laboratory and pathology, shariati hospital, tehran university of medical sciences, tehran, iran. ashraf jamal department of obstetrics and gynecology, shariati hospital, tehran university of medical sciences, tehran, iran. vajiheh marsoosi department of obstetrics and gynecology, shariati hospital, tehran university of medical sciences, tehran, iran.

to evaluate the value of random urinary protein creatinine ratio in prediction of 24h proteinuria in hypertensive pregnancies. method: random urine samples and routine 24h urine collections were collected from hypertensive pregnant women (n=100). reliability of random urinary protein-creatinine ratio was assessed by receiver operator characteristic (roc) curve to detect significant proteinuria ...

2011
Jennifer F. Nyland Myriam Fillion Fernando Barbosa Devon L. Shirley Chiameka Chine Melanie Lemire Donna Mergler Ellen K. Silbergeld

BACKGROUND Mercury (Hg) is a ubiquitous environmental contaminant with neurodevelopmental and immune system effects. An informative biomarker of Hg-induced immunotoxicity could aid studies on the potential contribution to immune-related health effects. OBJECTIVES Our objectives were to test the hypothesis that methylmercury (MeHg) exposures affect levels of serum biomarkers and to examine int...

Journal: :Human Reproduction 2023

Abstract Study question What is the non-essential trace element exposure impact on reproductive outcomes of women undergoing IVF treatment? Summary answer Increased blood and urinary concentration were associated with worse outcomes. known already Lower fertility rates have been observed in recent decades industrialized regions, increasing need for assisted techniques. Factors responsible this ...

Journal: :Occupational and environmental medicine 2004
G Hansen R Victor E Engeldinger C Schweitzer

AIMS To establish and analyse reference data for the mercury burden of patients with and without amalgam fillings. METHODS Atomic absorption spectroscopy was used to quantify Hg concentrations in the scalp hair and urine (before and after application of dimercaptopropane sulphonate), and Hg release from dental amalgams (using a newly developed, amalgam specific chew test), in 2223 subjects. ...

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