1.Bibliometric Analysis of Forensic Human Remains Identification Literature from 1991 to 2022
Ji-Wei MA ; Ping HUANG ; Ji ZHANG ; Hai-Xing YU ; Yong-Jie CAO ; Xiao-Tong YANG ; Jian XIONG ; Huai-Han ZHANG ; Yong CANG ; Ge-Fei SHI ; Li-Qin CHEN
Journal of Forensic Medicine 2024;40(3):245-253
Objective To describe the current state of research and future research hotspots through a metrological analysis of the literature in the field of forensic anthropological remains identification re-search.Methods The data retrieved and extracted from the Web of Science Core Collection (WoSCC),the core database of the Web of Science information service platform (hereinafter referred to as "WoS"),was used to analyze the trends and topic changes in research on forensic identification of human re-mains from 1991 to 2022.Network visualisation of publication trends,countries (regions),institutions,authors and topics related to the identification of remains in forensic anthropology was analysed using python 3.9.2 and Gephi 0.10.Results A total of 873 papers written in English in the field of forensic anthropological remains identification research were obtained.The journal with the largest number of publications was Forensic Science International (164 articles).The country (region) with the largest number of published papers was China (90 articles).Katholieke Univ Leuven (Netherlands,21 articles) was the institution with the largest number of publications.Topic analysis revealed that the focus of forensic anthropological remains identification research was sex estimation and age estimation,and the most commonly studied remains were teeth.Conclusion The volume of publications in the field of forensic anthropological remains identification research has a distinct phasing.However,the scope of both international and domestic collaborations remains limited.Traditionally,human remains identifica-tion has primarily relied on key areas such as the pelvis,skull,and teeth.Looking ahead,future re-search will likely focus on the more accurate and efficient identification of multiple skeletal remains through the use of machine learning and deep learning techniques.
2.Investigation of extrauterine growth restriction in very preterm infants in Chinese neonatal intensive care units.
Yan Yu LYU ; Yun CAO ; Yan Xiang CHEN ; Huai Yan WANG ; Ling ZHOU ; Yu WANG ; Yan Chen WANG ; Si Yuan JIANG ; K L E E shoo LEE ; Li LI ; Jian Hua SUN
Chinese Journal of Pediatrics 2023;61(9):811-819
Objective: To comprehensively assess the current status of extrauterine growth restriction (EUGR) in very preterm infants (VPI) and its associated factors in Chinese neonatal intensive care units (NICU). Methods: In this cohort study, 6 179 preterm infants born at <32 weeks' gestation were included, who were admitted to 57 hospitals in the China Neonatal Network in 2019 and hospitalized for ≥7 days. EUGR was evaluated by a cross-sectional definition (weight at discharge<10th percentile for postmenstrual age), a longitudinal definition (decline in weight Z score>1 from birth to discharge), and weight growth velocity. The comparison between infants with and without EUGR was conducted by t-test, Mann-Whitney U test or χ2 test as appropriate. Multivariable Logistic regression models were used to evaluate associations between EUGR with different definitions and maternal and neonatal factors, clinical practices, and neonatal morbidities. Results: A total of 6 179 VPI were enrolled in the study, with a gestational age of (29.8±1.5) weeks and birth weight of (1 365±304) g; 56.2% (3 474) of them were male. Among them, 48.4% (2 992 VPI) were cross-sectional EUGR and 74.9% (4 628 VPI) were longitudinal EUGR. Z score of weight was (0.13±0.78) at birth and decrease to (-1.35±0.99) at discharge. The weight growth velocity was 10.13 (8.42, 11.66) g/(kg·d). Multivariate Logistic regression analysis showed that among the influential factors that could be intervened after birth, late attainment of full enteral feeds (ORadjust=1.01, 95%CI 1.01-1.02, P<0.001; ORadjust=1.01, 95%CI 1.01-1.02, P<0.001), necrotizing enterocolitis≥Ⅱstage (ORadjust=2.64, 95%CI 1.60-4.35, P<0.001; ORadjust=1.62, 95%CI 1.10-2.40, P<0.001) and patent ductus arteriosus (ORadjust=1.94, 95%CI 1.50-2.51, P<0.001; ORadjust=1.63, 95%CI 1.29-2.06, P<0.001) were all associated with increased risks of both cross-sectional and longitudinal EUGR. In addition, late initiation of enteral feeds (ORadjust=1.06, 95%CI 1.02-1.09, P=0.020) and respiratory distress syndrome (ORadjust=1.45, 95%CI 1.24-1.69, P<0.001) were all associated with cross-sectional EUGR. Breast milk feeding (ORadjust=1.33, 95%CI 1.05-1.68, P<0.001) was associated with a higher risk of longitudinal EUGR. Conclusions: The incidence of EUGR in VPI in China is high. Some modifiable risk factors provide priorities to improve postnatal growth for VPI. Nutritional management of VPI and the efforts to decrease the incidence of complications are still the focus of clinical management in China.
Female
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Humans
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Infant, Newborn
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Male
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Cohort Studies
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East Asian People
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Infant, Premature
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Infant, Premature, Diseases
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Infant, Very Low Birth Weight
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Intensive Care Units, Neonatal
3.Impact of different diagnostic criteria for assessing mild micro-hepatic encephalopathy in liver cirrhosis: an analysis based on a prospective, multicenter, real-world study
Xiaoyan LI ; Shanghao LIU ; Chuan LIU ; Hongmei ZU ; Xiaoqing GUO ; Huiling XIANG ; Yan HUANG ; Zhaolan YAN ; Yajing LI ; Jia SUN ; Ruixin SONG ; Junqing YAN ; Qing YE ; Fei LIU ; Lei HUANG ; Fanping MENG ; Xiaoning ZHANG ; Shaoqi YANG ; Shengjuan HU ; Jigang RUAN ; Yiling LI ; Ningning WANG ; Huipeng CUI ; Yanmeng WANG ; Chuang LEI ; Qinghai WANG ; Hongling TIAN ; Zhangshu QU ; Min YUAN ; Ruichun SHI ; Xiaoting YANG ; Dan JIN ; Dan SU ; Yijun LIU ; Ying CHEN ; Yuxiang XIA ; Yongzhong LI ; Qiaohua YANG ; Huai LI ; Xuelan ZHAO ; Zemin TIAN ; Hongji YU ; Xiaojuan ZHANG ; Chenxi WU ; Zhijian WU ; Shengqiang LI ; Qian SHEN ; Xuemei LIU ; Jianping HU ; Manqun WU ; Tong DANG ; Jing WANG ; Xianmei MENG ; Haiying WANG ; Zhenyu JIANG ; Yayuan LIU ; Ying LIU ; Suxuan QU ; Hong TAO ; Dongmei YAN ; Jun LIU ; Wei FU ; Jie YU ; Fusheng WANG ; Xiaolong QI ; Junliang FU
Chinese Journal of Hepatology 2023;31(9):961-968
Objective:To compare the differences in the prevalence of mild micro-hepatic encephalopathy (MHE) among patients with cirrhosis by using the psychometric hepatic encephalopathy score (PHES) and the Stroop smartphone application (Encephal App) test.Methods:This prospective, multi-center, real-world study was initiated by the National Clinical Medical Research Center for Infectious Diseases and the Portal Hypertension Alliance and registered with International ClinicalTrials.gov (NCT05140837). 354 cases of cirrhosis were enrolled in 19 hospitals across the country. PHES (including digital connection tests A and B, digital symbol tests, trajectory drawing tests, and serial management tests) and the Stroop test were conducted in all of them. PHES was differentiated using standard diagnostic criteria established by the two studies in China and South Korea. The Stroop test was evaluated based on the criteria of the research and development team. The impact of different diagnostic standards or methods on the incidence of MHE in patients with cirrhosis was analyzed. Data between groups were differentiated using the t-test, Mann-Whitney U test, and χ2 test. A kappa test was used to compare the consistency between groups. Results:After PHES, the prevalence of MHE among 354 cases of cirrhosis was 78.53% and 15.25%, respectively, based on Chinese research standards and Korean research normal value standards. However, the prevalence of MHE was 56.78% based on the Stroop test, and the differences in pairwise comparisons among the three groups were statistically significant (kappa = -0.064, P < 0.001). Stratified analysis revealed that the MHE prevalence in three groups of patients with Child-Pugh classes A, B, and C was 74.14%, 83.33%, and 88.24%, respectively, according to the normal value standards of Chinese researchers, while the MHE prevalence rates in three groups of patients with Child-Pugh classes A, B, and C were 8.29%, 23.53%, and 38.24%, respectively, according to the normal value standards of Korean researchers. Furthermore, the prevalence rates of MHE in the three groups of patients with Child-Pugh grades A, B, and C were 52.68%, 58.82%, and 73.53%, respectively, according to the Stroop test standard. However, among the results of each diagnostic standard, the prevalence of MHE showed an increasing trend with an increasing Child-Pugh grade. Further comparison demonstrated that the scores obtained by the number connection test A and the number symbol test were consistent according to the normal value standards of the two studies in China and South Korea ( Z = -0.982, -1.702; P = 0.326, 0.089), while the other three sub-tests had significant differences ( P < 0.001). Conclusion:The prevalence rate of MHE in the cirrhotic population is high, but the prevalence of MHE obtained by using different diagnostic criteria or methods varies greatly. Therefore, in line with the current changes in demographics and disease spectrum, it is necessary to enroll a larger sample size of a healthy population as a control. Moreover, the establishment of more reliable diagnostic scoring criteria will serve as a basis for obtaining accurate MHE incidence and formulating diagnosis and treatment strategies in cirrhotic populations.
4.Incidence of extrauterine growth retardation and its risk factors in very preterm infants during hospitalization: a multicenter prospective study.
Wei SHEN ; Zhi ZHENG ; Xin-Zhu LIN ; Fan WU ; Qian-Xin TIAN ; Qi-Liang CUI ; Yuan YUAN ; Ling REN ; Jian MAO ; Bi-Zhen SHI ; Yu-Mei WANG ; Ling LIU ; Jing-Hui ZHANG ; Yan-Mei CHANG ; Xiao-Mei TONG ; Yan ZHU ; Rong ZHANG ; Xiu-Zhen YE ; Jing-Jing ZOU ; Huai-Yu LI ; Bao-Yin ZHAO ; Yin-Ping QIU ; Shu-Hua LIU ; Li MA ; Ying XU ; Rui CHENG ; Wen-Li ZHOU ; Hui WU ; Zhi-Yong LIU ; Dong-Mei CHEN ; Jin-Zhi GAO ; Jing LIU ; Ling CHEN ; Cong LI ; Chun-Yan YANG ; Ping XU ; Ya-Yu ZHANG ; Si-Le HU ; Hua MEI ; Zu-Ming YANG ; Zong-Tai FENG ; San-Nan WANG ; Er-Yan MENG ; Li-Hong SHANG ; Fa-Lin XU ; Shao-Ping OU ; Rong JU
Chinese Journal of Contemporary Pediatrics 2022;24(2):132-140
OBJECTIVES:
To investigate the incidence of extrauterine growth retardation (EUGR) and its risk factors in very preterm infants (VPIs) during hospitalization in China.
METHODS:
A prospective multicenter study was performed on the medical data of 2 514 VPIs who were hospitalized in the department of neonatology in 28 hospitals from 7 areas of China between September 2019 and December 2020. According to the presence or absence of EUGR based on the evaluation of body weight at the corrected gestational age of 36 weeks or at discharge, the VPIs were classified to two groups: EUGR group (n=1 189) and non-EUGR (n=1 325). The clinical features were compared between the two groups, and the incidence of EUGR and risk factors for EUGR were examined.
RESULTS:
The incidence of EUGR was 47.30% (1 189/2 514) evaluated by weight. The multivariate logistic regression analysis showed that higher weight growth velocity after regaining birth weight and higher cumulative calorie intake during the first week of hospitalization were protective factors against EUGR (P<0.05), while small-for-gestational-age birth, prolonged time to the initiation of total enteral feeding, prolonged cumulative fasting time, lower breast milk intake before starting human milk fortifiers, prolonged time to the initiation of full fortified feeding, and moderate-to-severe bronchopulmonary dysplasia were risk factors for EUGR (P<0.05).
CONCLUSIONS
It is crucial to reduce the incidence of EUGR by achieving total enteral feeding as early as possible, strengthening breastfeeding, increasing calorie intake in the first week after birth, improving the velocity of weight gain, and preventing moderate-severe bronchopulmonary dysplasia in VPIs.
Female
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Fetal Growth Retardation
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Gestational Age
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Hospitalization
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Humans
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Incidence
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Infant
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Infant, Newborn
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Infant, Premature
;
Infant, Very Low Birth Weight
;
Prospective Studies
;
Risk Factors
5.Effect of Shanhaidan Granules combined with tadalafil on erectile dysfunction: A multi-center clinical trial.
Yan-Ping HUANG ; Zheng-Mu WU ; Nian-Qin YANG ; Yu PENG ; Wei-Jie CHEN ; Li LI ; Lei CHEN ; Huai-Jin CHENG ; Mu-Jun LU
National Journal of Andrology 2021;27(9):819-824
Objective:
To observe the clinical effect and safety of Shanhaidan Granules (SHDG) combined with tadalafil tablets (TT) in the treatment of ED.
METHODS:
In this open multi-center case-control clinical trial, we enrolled 247 ED patients according to the designed criteria, and treated them orally with SHDG at 10 g per time tid (n = 74), TT at 5 mg per time bid (n = 52), or SHDG + TT at the above doses (n = 121), all for 8 weeks. Before and after medication, we recorded the IIEF-6, erection hardness scores (EHS), traditional Chinese medicine syndromes (TCMS) scores, penile cavernous blood flow parameters and adverse reactions, and compared them between the 3 groups of patients.
RESULTS:
After 8 weeks of treatment, all the patients showed significantly increased IIEF-6, EHS and TCMS scores in comparison with the baseline (P < 0.05). The total effectiveness rates in the SHDG, TT and SHDG + TT groups were 60.8%, 67.3% and 69.4% respectively based on the IIEF-6 scores, remarkably higher in the TT and SHDG + TT groups than in the SHDG group (P < 0.05), and 40.5%, 32.7% and 63.6% respectively according to the TCMS scores, markedly higher in the SHDG and SHDG + TT groups than in the TT group (P < 0.05). Single-center data manifested significantly increased peak systolic velocity (PSV) of the penile artery in the SHDG + TT and TT groups (P < 0.05). The improvement values of relevant parameters were remarkably higher in the SHDG + TT group than in the TT and SHDG groups, so were IIEF-6 scores in the TT than in the SHDG group, and TCM syndromes in the SHDG than in the TT group. No medication-related adverse events were found in any of patients after treatment, except for some mild side effects including muscle soreness and gastrointestinal reactions in a few cases, all soon relieved, none with abnormalities in blood and urine routine tests or hepatic and renal function indicators.
CONCLUSIONS
Shanhaidan Granules combined with tadalafil can significantly improve the erectile function and reduce TCM syndromes in ED patients, and therefore can be applied effectively and safely in clinical practice./.
Erectile Dysfunction/drug therapy*
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Humans
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Male
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Medicine, Chinese Traditional
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Penile Erection
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Syndrome
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Tadalafil/therapeutic use*
6.Impact of libido at 2 weeks after stroke on risk of stroke recurrence at 1-year in a chinese stroke cohort study.
Jing-Jing LI ; Huai-Wu YUAN ; Chun-Xue WANG ; Ben-Yan LUO ; Jie RUAN ; Ning ZHANG ; Yu-Zhi SHI ; Yong ZHOU ; Yi-Long WANG ; Tong ZHANG ; Juan ZHOU ; Xing-Quan ZHAO ; Yong-Jun WANG
Chinese Medical Journal 2015;128(10):1288-1292
BACKGROUNDThere were few studies on the relation between changes in libido and incidence of stroke recurrence. The aim of this study was to investigate the relationship between libido decrease at 2 weeks after stroke and recurrent stroke at 1-year.
METHODSIt is a multi-centered, prospective cohort study. The 14 th item of the Hamilton Depression Rating Scale-17 was used to evaluate changes of libido in poststroke patients at 2 weeks. Stroke recurrence was defined as an aggravation of former neurological functional deficit, new local or overall symptoms, or stroke diagnosed at re-admission.
RESULTSAmong 2341 enrolled patients, 1757 patients had completed follow-up data, 533 (30.34%) patients had decreased libido at 2 weeks, and 166 (9.45%) patients had recurrent stroke at 1-year. Multivariate logistic regression analysis showed that, compared with patients with normal libido, the odds ratio (OR) of recurrent stroke in patients with decreased libido was reduced by 41% (OR = 0.59, 95% confidence interval [CI]: 0.40-0.87). The correlation was more prominent among male patients (OR = 0.52, 95% CI: 0.31-0.85) and patients of ≥60 years of age (OR = 0.57, 95% CI: 0.35-0.93).
CONCLUSIONSOne out of three stroke patients in mainland China has decreased libido at 2 weeks after stroke. Decreased libido is a protective factor for stroke recurrence at 1-year, which is more prominent among older male patients.
Aged ; Asian Continental Ancestry Group ; China ; Female ; Humans ; Incidence ; Libido ; physiology ; Male ; Middle Aged ; Prospective Studies ; Risk Factors ; Stroke ; epidemiology
7.Safety and efficacy of microscope-assisted insertion of screws into fused C1-occipital condyle complex for occipital cervical fixation in atlantal cervical nonsegmentation patients.
Huai-Yu TONG ; Yuan-Zheng ZHANG ; Xin-Guang YU
Acta Academiae Medicinae Sinicae 2014;36(6):635-638
OBJECTIVETo explore the safety and efficacy of the insertion of screws into fused C1-occipital condyle(CC)complex without image guidance in atlantal-cervical nonsegmentation patients.
METHODSThe occipital condyle junction was fixed posteriorly in 10 basilar invagination patients with atlantal-cervical nonsegmentation using polyaxial titanium screws(3.5 mm)inserted unicortically into the CC complex and C2 pedicles,followed by fixation to a 3 mm rod. Drilling was guided by anatomic landmarks. The entry point was at the center of posterior surface of the CC complex. The angle of medicalization was 10-15 degrees. In the sagittal plane,the angle for maximal superior screw angulation was also 10-15 degrees. The screw length to obtain unicortical purchase was 16 to 22 mm. CT scans were obtained before and after the surgery. The length,width,and height of CC complex were measured on computed tomography(CT)preoperatively. The position of screws and the condition of fixation were analyzed on postoperative CT scan. Postoperative complications were recorded. The mean follow-up was(30.2±4.38)months(range: 24-36 months).
RESULTSThe width,length,height of left side CC complex were(7.96±2.23)mm,(16.06±2.73)mm,and(13.76±2.06)mm,and the width,length,height of right side CC complex were(7.84±1.38)mm,(16.66±2.58)mm,and(12.81±2.62)mm. No fracture was identified. There was no screw malposition or neurovascular complication related to screw insertion. No screw loosening or construct failure was observed during the follow-up.
CONCLUSIONSIn patients with atlantal cervical nonsegmentation,the CC complex screws can be safely inserted assisted by microscope without image guidance. Occipital condyle junction fixation using polyaxial CC complex screws is feasible and can be a good alternative where other fixation techniques are not satisfactory.
Bone Screws ; Cervical Vertebrae ; surgery ; Humans ; Microscopy ; Neck ; Spinal Diseases ; surgery ; Spinal Fusion ; methods ; Tomography, X-Ray Computed
8.High-field intraoperative magnetic resonance imaging suite with neuronavigation system: implementation and preliminary experience in the pituitary adenoma operation with transsphenoidal approach.
Xiang-hui MENG ; Bai-nan XU ; Shao-bo WEI ; Tao ZHOU ; Xiao-lei CHEN ; Xin-guang YU ; Ding-biao ZHOU ; Huai-yu TONG ; Jia-shu ZHANG ; Yan ZHAO ; Yuan-Zheng HOU
Chinese Journal of Surgery 2011;49(8):703-706
OBJECTIVESTo review the preliminary clinical experience with high-field-strength intraoperative magnetic resonance imaging (iMRI) suite with neuronavigation system in the pituitary adenoma operation with transsphenoidal approach.
METHODSFrom March 2009 to December 2010, 31 patients [range, 29 - 76 years, mean age (47 ± 11) years]of pituitary adenoma were operated with transsphenoidal approach and intraoperatively with a movable 1.5 T high-field-strength iMRI suite in combination with neuronavigation system. Tumor size was 1.8 - 7.3 cm, mean (3.5 ± 1.2) cm. Twenty-five cases were non-functional pituitary adenoma, 4 cases were prolactin-secreting pituitary adenoma, 2 cases were growth hormone-secreting pituitary adenoma. Thirty patients' resection with transnasal transsphenoidal approach were performed, one patient with transoral transsphenoidal approach was performed.
RESULTSIn 12 cases of 30 patients who planed to totally remove tumor, iMRI had revealed residual lesions and resulted in the change of the surgical strategy, 2 invasive cavernous sinus cases no further resection of the tumor because of internal carotid artery encasement, the other 10 cases resected further, eventually. Finally, 8 cases were totally removed. The ratio of total removal tumor was enhanced to 86.7% (26/30) from 60.0% (18/30). There was no perioperative mortality.
CONCLUSIONSHigh-field-strength iMRI suite with neuronavigation system provides valuable information of tumor resection that allows intraoperative modification of the surgical strategy. It could be very helpful to maximize the resection of the pituitary adenoma and minimize the injury to neurological function.
Adenoma ; surgery ; Adult ; Aged ; Cavernous Sinus ; surgery ; Female ; Humans ; Magnetic Resonance Imaging ; methods ; Male ; Middle Aged ; Monitoring, Intraoperative ; methods ; Neuronavigation ; methods ; Pituitary Neoplasms ; surgery
9.Exposure level and risk factors of heavy metal in prenatal period among Shanghai infants.
Xiao-Dan YU ; Chong-Huai YAN ; Xiao-Ming SHEN ; Ying TIAN ; Lu-Lu CAO ; Xiao-Gang YU ; Mei-Qin WU ; Li ZHAO ; Jun-Xia LIU ; Xin ZHOU
Chinese Journal of Preventive Medicine 2011;45(9):806-809
OBJECTIVETo explore the exposure level and risk factors of heavy metal among Shanghai infants in their prenatal period.
METHODSA total of 1652 pregnant or puerperal women were recruited from 10 midwifery-qualified hospitals in Shanghai since October 2008 to October 2009, by the stratified cluster sampling method. They answered the questionnaire and their umbilical cord blood and serum were collected to detect the content of Pb, Hg, Mn, Cd, As and Tl. The risk factors were analyzed by single and multiple regression methods respectively.
RESULTSThe median value of the content of Pb, Hg, Mn, Cd, As and Tl were 41.00, 1.88, 4.10, 0.03, 0.86 and 0.02 µg/L respectively. The Hg concentration of pregnant women who ate fish for 4 - 7 times per week (9.7% (160/1652)) was 2.76 µg/L, which was higher than that of pregnant women who only ate fish for 1-3 times per week (49.3% (814/1652)) and those who seldom ate fish (40.0% (661/1652)); the Hg concentration in the two groups above were 2.41 and 2.03 µg/L separately. The difference had statistical significance (χ(2) = 36.40, P < 0.001). Meanwhile, the concentrations of Pb and Tl in the group of pregnant women whose houses were remodeled by PVC pipe (85.0% (1404/1652)) was higher than the concentrations in group of pregnant women whose houses were remodeled by galvanized pipe (15.0% (248/1652)); the Pb concentration in the two groups above were 45.54 and 40.00 µg/L (Z = 2.54, P < 0.05) and the Tl concentration in the two groups above were 0.021 and 0.018 µg/L (Z = 2.97, P < 0.05). However, the As concentration in the group of PVC pipe remodeled was 4.33 µg/L, which was lower than that in the group of galvanized pipe (9.37 µg/L). The difference had statistical significance (Z = 3.99, P < 0.01). The concentrations of Mn, Cd and Tl in the groups of pregnant women whose house had been remodeled in the last 3 years (38.0% (628/1652)) were 14.78, 0.51 and 0.022 µg/L separately, which were all significantly higher than those in the groups of women whose houses' were not remodeled (62.0% (1024/1652)), whose concentrations were 11.01, 0.29 and 0.02 µg/L respectively. The differences had statistical significance (Mn: Z = 2.46, P < 0.05; Cd: Z = 2.38, P < 0.05; Tl: Z = 2.81, P < 0.01).
CONCLUSIONThe infants in Shanghai were exposed to heavy metals in their prenatal period. The main sources of the exposure were daily diet and remodeled pollution.
Adult ; China ; Environmental Pollution ; Female ; Fetal Blood ; chemistry ; Humans ; Infant, Newborn ; Male ; Maternal Exposure ; adverse effects ; Metals, Heavy ; adverse effects ; Pregnancy ; Risk Factors ; Surveys and Questionnaires
10.Effects of chelation therapy with succimer in young rabbits of moderate lead poisoning.
Gao-yan YU ; Chong-huai YAN ; Xiao-gang YU ; Yong ZUO ; Xiang-yu ZOU ; Jian XU ; Sheng-hu WU ; Xiao-ming SHEN
Chinese Journal of Preventive Medicine 2009;43(1):8-13
OBJECTIVETo explore the effect of chelation therapy with succimer (DMSA) in male rabbits of moderate lead poisoning during juvenile stage.
METHODSTwenty-four 45-day-old male New Zealand rabbits were randomly divided into three groups (therapy group, TG; positive control group, PG and negative control group, NG, n=8). The TG and PG were orally exposed to lead acetate (5 mg x kg(-1) x d(-1)) for 6 weeks. Rabbits in TG were orally supplied DMSA 1050 mg/m2 in the first week and 700 mg/m2 in the next two weeks, while the other two groups wren't blood and urinary samples of all rabbits were collected per week. The tissues and organs of all rabbits were collected after 12 weeks. The blood lead levels (BLLs) were determined by atomic absorption spectrometer. The urine lead levels and the lead contents of tissue and organ were determined by inductively coupled plasma-mass spectrometry. Histopathology of tissue and organ was observed by light microscope.
RESULTSCompared with PG, the lead level in the morning urine of TG with DMSA chelating was increased significantly. The level was peaked at (1246.96 +/- 157.91) microg/L on the first day after chelating. While the base line was (40.97 +/- 1.77) microg/L before chelating. Meanwhile, the BLLs were sharply declined from (429.63 +/- 10.82) microg/L to (238.50 +/- 11.82) microg/L. The urine lead levels of TG decreased through the 3-week chelating and 3-week discontinuation. The urine lead levels of these two groups were significantly different (F=2934.35, P<0.01). Compared to each two groups in these three groups, there were significant difference (P<0.01). The authors found the reversion of BLLs in first week after stop chelating. The BLLs of PG presented the slow course of declining in the same time, were (135.50 +/- 7.09) microg/L, very close to the level of TG for (149.88 +/- 11.39) microg/L. Compared with treatment discontinuation for 3 weeks, the urine lead levels and the body weight gain of the therapy group increased more than that of PG, and the BLLs and the lead concentrations in tissues and organs decreased more than that of PG, and histopathology in the liver tissues and testicle tissues were improved.
CONCLUSIONDMSA chelating for the rodent models of moderate lead poisoning might reduce the BLLs and soft tissue lead contents quickly and effectively, decrease toxic effects of lead in a short period of time, thus alleviate the impairment of lead poisoning on tissues and organs by decreasing lead burden, and bring out improvement on the growth retardation caused by lead poisoning.
Animals ; Chelation Therapy ; Lead ; blood ; urine ; Lead Poisoning ; drug therapy ; Male ; Rabbits ; Succimer ; therapeutic use

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