Fetal pulmonary artery stiffness is a strong predictor of persistent pulmonary hypertension of the newborn - An echocardiographic study.

Objective: Pulmonary artery stiffness (PAS) is a strong and independent predictor of mortality in adult patients with pulmonary hypertension (PH). But the change in PAS during perinatal period remains unknown. Here, we aimed to explore the feasibility and performance of PAS on predicting persistent pulmonary hypertension of the newborn (PPHN).

[Surveillance of schistosomiasis in national surveillance sites of Zhenjiang City, 2005-2010].

Objective: To master the changes of schistosomiasis epidemic situation in national surveillance sites of Zhenjiang City, Jiangsu Province.

Methods: According to the scheme of the national schistosomiasis surveillance, the Shicheng Village of Yangzhong County and Sanzhou Village of Dantu District were selected as the national schistosomiasis surveillance sites, and from 2005 to 2010, the schistosomiasis morbidity and Oncomelania hupensis status were surveyed and the results were analyzed statistically.

Results: In 2010, in the Shicheng Village, the reduction rates of mean living snail density, infected snail density, area with infected snails, and positive blood tests in residents were 98.

Urinary S-phenylmercapturic acid as a key biomarker for measuring occupational exposure to low concentrations of benzene in Chinese workers: a pilot study.

Objective: This study analyzed the level of urinary S-phenylmercapturic acid (U-SPMA) for low benzene exposure in a group of Chinese shoe-making workers.

Methods: Urinary samples from 55 workers exposed to benzene at levels lower than 10 parts per million (ppm) were collected at postshift. U-SPMA level was determined using high-performance liquid chromatography/mass spectrography (HPLC/MS) method.

[Study on the standard of health protection zone for petroleum processing industry].

Objective: To establish health protection zone standards for petroleum processing industry.

Methods: The intensity of characteristic pollutants from fugitive emission were estimated by the inverse method of ground concentration through field survey and monitoring for representative petroleum processing industry, which was calculated health protection zone by using the model of atmospheric diffusion.

Results: Characteristic pollutant of fugitive emission source from petroleum processing industry was confirmed as hydrogen sulfide.

[A cross-sectional study about the effects of residential exposure to power transmission line on human nervous system symptoms and hematology].

Objective: To investigate the possible effects on nervous system and health condition under the exposure to electromagnetic field.

Methods: Take the resident around the power transmission line as the objects and were divided into 3 groups by the distance from the power transmission line 20 m, 100 m and 500 m, respectively. Some living conditions and health conditions were recorded by face-to-face the questionnaire survey, and Hematological indices of each groups were examined including IgG, IgM, leukocyte formulae, erythrocyte, hemoglobin and platelet.

[Surveillance of schistosomiasis in a national, surveillance site of Dantu District, Zhenjiang City, 2005-2009].

The surveillance of schistosomiasis in Sanzhou Village, a national schistosomiasis surveillance site, in Gaoqiao Town of Dantu District, Zhenjiang City from 2005 to 2009 showed that the schistosomiasis morbidity remained in a low level in the surveillance site; however, the Oncomelania snails and infected snail areas remained high. It is suggested that, in addition to snail control, comprehensive control measures should be strengthened, and the causes of infected snails in marshland should be investigated, so as to clarify the roles of various hosts in transmission of schistosomiasis.

Trans, trans-muconic acid as a biomarker of occupational exposure to high-level benzene in China.

Objective: The work aimed to study the potential correlation between the high-level benzene exposure and its urinary metabolites S-phenylmercapturic acid (SPMA) and trans, trans-muconic acid (t,t-MA) in Chinese shoe-making workers.

Methods: Individual benzene-exposed levels were determined by gas chromatography analysis, urinary t,t-MA, and urinary SPMA were determined by high performance liquid chromatography-an ultraviolet detector and liquid chromatography/electrospray tandem mass spectrometry method, respectively.

Results: The concentration of benzene ranged from 2.

[Establishment of biological limit value of urinary S-phenylmercapturic acid for occupational exposure to benzene].

Objective: To establish the biological exposure limit values of urinary S-phenylmercapturic acid (SPMA) for assessing occupational exposure to benzene.

Methods: Study participants were selected from 55 workers of benzene exposures below 32.5 mg/m(3).

High-performance liquid chromatographic determination of urinary trans, trans-muconic acid excreted by workers occupationally exposed to benzene.

Objective: To investigate the relationship between trans, trans-muconic acid (ttMA) as benzene metabolite of occupational workers and benzene concentration in air.

Methods: A rapid and sensitive high-performance liquid chromatography was developed to determine the level of urinary ttMA. ttMA was extrated from urinary samples in liquid-liquid phase a ODS (2) (5u) column (phi 4.

Effect of manganese on heat stress protein synthesis of new-born rats.

Aim: To study the effect of manganese (Mn) on heat stress protein 70 (HSP70) synthesis in the brain and liver of new-born rats whose mother-rats were exposed to Mn.

Methods: 32 female rats were randomly divided into four groups. One group was administrated with physiological saline only as control group, the other three groups were administrated with 7.