Objective To explore the effects of smoking and alcohol drinking on arsenic metabolism of people exposed to different concentrations of arsenic in drinking water.Methods Residents in Shanxi exposed to different concentrations of arsenic in drinking water and age ≥ 18 years old adults were chosen as the subjects for this study in 2008,the subjects were divided into three groups according to the concentrations of arsenic in drinking water: high-arsenic exposure group (more than 0.05 mg/L),low-arsenic exposure group (between 0.01 and 0.05 mg/L) and control group(less than 0.01 mg/L),excluded recently had eaten seafood and had poisoning symptoms of chronic arsenic in drinking water in the crowd.Smoking and alcohol drinking habits were investigated by questionnaire.Arsenic species in the urine samples were detected with hydride generation atomic absorption spectroscopy.Total arsenic(tAs) was the sum of iAs％,MMA％ and DMA％.iAs％,MMA％ and DMA％ were calculated as iAs/tAs,MMA/tAs and DMA/tAs,respectively.The first methylation ratio(FMR) and the secondary methylation ratio(SMR) were calculated as (MMA + DMA)/tAs and DMA/(MMA + DMA),respectively.Results Three hundred and ninety-five adults were chosen in this study.In the high exposure group the alcohol drinking and smoking subjects had higher MMA％(16.24％) but lower SMR(82.19％ ) than the non-drinking and non-smoking subjects (12.16％ and 86.13％,respectively).The differences of both MMA％ and SMR were significant(P ＜ 0.05 ).No significant difference was observed between the non-smoking/non-drinking subjects and the smoking or the drinking subjects(all P ＞ 0.05 ).In the low exposure group there were higher MMA％( 13.86％,13.99％) lower DMA％(72.87％,77.76％)and lower SMR (83.48％,83.90％ ) in those with smoking or drinking/smoking compared with the non-drinking and non-smoking subjects (11.83％,80.35％ and 86.54％,respectively,all P ＜0.05 ).No significant difference was observed between drinkers and non-drinking/non-smoking subjects(P ＞ 0.05).In the control group there were a higher MMA％( 17.27％,17.06％) lower DMA％ (73.89％,72.29％) and lower SMR (81.48％,82.58％ ) in those with smoking or drinking/smoking compared with the non-drinking and nonsmoking subjects( 11.52％,79.68％ and 87.19％,respectively,all P ＜ 0.05).No significant difference was observed between drinkers and the non-drinking/non-smoking subjects (all P ＞ 0.05).ConclusionThe arsenic methylation capacity of people with drinking and smoking is poorer than that of non-drinking and non-smoking subjects after arsenic exposure.

ObjectiveTo construct geographic information database of drinking water type of endemic arsenism at village level with Google Earth and provide scientific basis for prevention and management of endemic arsenism.MethodsDrinking water samples were collected in the field of Shilegetu village,Tuoketuo county,Inner Mongolia in 2008.Arsenic concentrations were determined by high-performance liquid chromatography-hydride generation-atomic fluorescence spectrometry.Global positioning system(GPS) was performed to obtain the geographic information of the water sources.Google Earth was applied to establish the geographic information database.Results There were 5 drinking water resources in this village.They were located between 40°29′09″ N and 40°29′36″ Nlatitude and 111°28′00″ E and 111°29′02″ E longitude,with the altitude between 1010 m and 1021 m.For all drinking water resources,four water arsenic concentrations was beyond 0.05 mg/L and one below 0.05 mg/L.In addition,one water source had been abandoned and the remaining four were providing daily drinking water for residents of the villages.ConclusionsThe geographic information database,established by Google Earth,can intuitively reflect the real situation of the endemic village.It can provide more useful information for field epidemiological research.It is an effectively tool in control and management of endemic arsenism.

The effects of over-expression of testis-specific expressed gene 1 (TSEG-1) on the viability and apoptosis of cultured spermatogonial GC-1spg cells were investigated, and the immortal spermatogonial cell line GC-1spg (CRL-2053™) was obtained as the cell model in order to explore the function of TSEG-1. We transfected the eukaryotic vector of TSEG-1, named as pEGFP-TSEG-1 into cultured spermatogonial GC-1spg cells. Over-expression of TSEG-1 inhibited the proliferation of GC-1spg cells, and arrested cell cycle slightly at G0/G1 phase. Transfection of TSEG-1 attenuated the transcript levels of Ki-67, PCNA and cyclin D1. In addition, over-expression of TSEG-1 induced early and late apoptosis, and reduced the mitochondrial membrane potential of GC-1spg cells. Moreover, transfection of TSEG-1 significantly enhanced the ratio of Bax/Bcl-2 and transcript levels of caspase 9, and decreased the expression of Fas and caspase 8 in GC-1spg cells. These results indicated over-expression of TSEG-1 suppresses the proliferation and induces the apoptosis of GC-1spg cells, which establishes a basis for further study on the function of TSEG-1.

ObjectiveTo study the quality control methods for 99Tcm-TRODAT-1 kit and injection.MethodsThe appearance,pH,contents of the bases,the labeling yield,asepsis and bacterial endotoxins of 99Tcm-TRODAT-1 kits from three different batches were examined.The kit stability was estimated under different conditions.The transparence,pH,radiochemical purity,half-life,asepsis and bacterial endotoxins of 99Tcm-TRODAT-1 injection were tested.ResultsThe 99Tcm-TRODAT-1 kit and injection were both achromous and transparent,with pH values being 5.9 ± 0.1 and 5.5 - 7.0 respectively.The contents of stannous chloride and TRODAT-1 were stable.The labeling yield of the kit and the radiochemical purity of the injection were both ≥95％.The asepsis test demonstrated that the characters of 99Tcm-TRODAT-1 kit and injection were qualified.TRODAT-1 kit was stable at 0 -4 ℃ for 6 months or at room temperature (20 -25 ℃ )for 10 days,and the radiochemical purity of the injection was still ＞ 90％ at room temperature for 8 hours.ConclusionsThe quality control methods for 99Tcm-TRODAT-1 kit are simple and practical.The kit and injection are qualified and can be used for clinical application.

OBJECTIVETo summarize our experiences in the diagnosis and treatment of placenta accreta in the second trimester of pregnancy.

METHODSWe retrospectively analyzed the clinical data of 31 patients were admitted to Peking Union Medical College Hospital with placenta accreta in the second trimester of pregnancy from January 2002 to January 2010.

RESULTSAmong 31 cases, one case (3.2%) was suspected to be with placenta accreta by ultrasound examination and 30 cases (96.8%) were normal before delivery. Placenta accreta was identified during follow-up in 12 cases (38.7%) after delivery. Fourteen patients underwent curettage again after delivery,which was effective in 6 patients (42.9%) and failed in 8 patients,in whom uterine artery embolization (UAE) was further applied. Thirteen patients underwent UAE without curettage. In total,21 cases underwent UAE, which was effective in 19 patients (90.5%); one patient with abnormal β-human chorionic gonadotropin (β-HCG) 5 months after embolization underwent lesion resection and one case with slightly increased β-HCG were lost to follow-up. Hysteroscopy was effective in 3 patients,of whom two patients underwent lesion resection by hysteroscopy and one case who was suspected to be with trophoblastic disease by ultrasonography before surgery and confirmed to be placenta accreta during hysteroscopy examination underwent lesion resection. One case experienced hemorrhagic shock during vaginal delivery and underwent emergency laparotomy. Among all these 31 patients,massive hemorrhage occurred in 13 cases during delivery and hemorrhagic shock in 2 cases. Three cases had postpartum hemorrhage and stopped bleeding after UAE. None needed hysterectomy.

CONCLUSIONSPlacenta accreta in the second trimester of pregnancy is usually diagnosed after childbirth,which may be delayed in some cases. Therefore,special attention should be paid to this disease during follow-up. Conservative treatment was the main therapy of placenta accreta in the second trimester of pregnancy. UAE is effective in stopping bleeding.

Adult ; Dilatation and Curettage ; Female ; Follow-Up Studies ; Humans ; Placenta Accreta ; diagnosis ; therapy ; Pregnancy ; Pregnancy Trimester, Second ; Retrospective Studies ; Uterine Artery Embolization ; Young Adult

OBJECTIVETo assess the effectiveness and safety of acupuncture and moxibustion for treatment of ulcerative colitis.

METHODSRandomized controlled trials or clinical controlled trials of acupuncture and moxibustion for interfere of ulcerative colitis in recent 10 years were reviewed and Meta-analysis was made for the literature results.

RESULTSAltogether 11 papers of clinical study were enrolled. Heterogeneous tests were conducted for the results of the 11 studies, as a result, chi2 = 8.55, P = 0.67. The fixed effect model was used for statistical analysis, after combination OR = 3.82, confidence interval of 95% was 2.65-5.52. The rhombus was located at the right side of the medium line. After Z test, Z = 7.14, P < 0.01, the therapeutic effect and the cured rate in the treatment group were significantly higher than those of the control group.

CONCLUSIONThe therapeutic effect of acupuncture and moxibustion on ulcerative colitis is superior to that of western medicine with safety and less adverse reactions.

Acupuncture Therapy ; Colitis, Ulcerative ; therapy ; Humans ; Moxibustion ; Randomized Controlled Trials as Topic

Objective To learn the infection status of sexually transmitted diseases (STDs)and acquired immunodeficiency syndrome (AIDS)among female sex workers (FSWs)in Huzhou,and to learn the awareness rate of knowledge of AIDS, and to provide scientific evidence for the development of prevention and control measures.Methods According to the national AIDS surveillance standards,a questionnaire survey was conducted among FSWs and blood samples were collected to detect the antibodies to human immunodeficiency virus (HIV),syphilis and hepatitis C virus.Results A total of 800 FSWs,with an average age (25. 5 ±5. 0 years old)were investigated,and the awareness rate of AIDS related knowledge was 92. 0%.The positive rate of syphilis antibody was 2. 9%and the positive rate of hepatitis C antibody was 0. 2%.HIV antibody was tested negative.The persistent condom use rate among commercial sex workers was 57. 6% in the recent month.The awareness rate of AIDs related knowledge among FSWs with senior middle school education and above was 3. 51 times of those with primary school education and below.Conclusion The prevalence of syphilis and hepatitis C infection among FSWs were high in Huzhou.It is necessary to strengthen the health education among FSWs to improve the awareness of the knowledge,especially for those with low level education.And it is necessary to improve the accessibility of AIDs prevention service to reduce the spread of HIV.

Objective The aim of this study is to explore epidemic characteristics of HIV/AIDS by different route of transmission during 2011—2014 in Huzhou City,then to provide a scientific basis for the prevention and control of HIV. Methods The epidemiological case data of HIV/AIDS from 2011 to 2014 were collected in Huzhou City by China information system for disease control and prevention.Descriptive epidemiological methods were used for analysis.Results A total of 436 cases with HIV/AIDS were reported during 2011—2014 in Huzhou City,and the number of HIV/AIDS reports increased year by year.The main route of transmission include heterosexual contact,which was accounted for 56.65%.MSM transmission was accounted for 38.53%,and injection drug transmission was accounted for 3.90%.Mother to child transmission was 1 case and blood transfusion /blood products transmission were 3 cases,which accounting for 0.92%.The constituent ratio of injecting drug patients,mother to child transmission or blood transfusion /blood products patients presented declining trend (P <0.05).Patients who were infected through heterosexual contact mainly were 30 to <60 years of age (68.83%),junior middle school or below education level (80.97%),married (61.94%).Patients who were infected through MSMmainly were 15 to <45 years of age (76.19%),high school or higher education (47.62%), unmarried (51.19%),household registration of Huzhou City (52.98%).Patients who were infected through injection
drug mainly were 30 to <45 years of age (70.59%),primary school or lower education level (82.35%),unmarried (47.06%),household registration of other province (94.12%).Most cases were detected HIV positive through clinical tests,which accounting for 51.15%.Most HIV /AIDS of MSM,heterosexual transmission and inject -drugs were distributed in Wu Xing District,which accounting for 67.26%,51.42% and 64.71%,respectively.51.15% HIV /AIDS were detected by clinical test.Conclusion The reported cases of HIV /AIDS were still mainly transmitted by heterosexual contact in recent years in Huzhou City,and the constituent ratio of MSMtransmission has increased slightly.

Objective To investigate the effects of circDNMT1 on the proliferation,apoptosis and epithelial-mesenchymal transition(EMT)of triple-negative breast cancer(TNBC)cells by regulating miR-377-3p/PUM1 axis.Methods The TNBC tissues and adjacent normal tissues of 24 patients with TNBC treated in Danzhou People's Hospital from 2018 to 2021 were collected.qRT-PCR and Western blot were used to detect the expression of circDNMT1,miR-377-3p,and PUM1 protein in tissue and mouse normal breast epithelial cell line HC11 and TNBC cell lines 4T1,Eph41424,and JC.4T1 cells were divided into the 4T1 group(untransfected),the si-NC group(transfected with si-NC),the si-DNMT1 group(transfected with si-DNMT1),the si-DNMT1+anti-NC group(simultaneously transfected with si-DNMT1 and anti-NC),and the si-DNMT1+anti-miR-377-3p group(simultaneously transfected with si-DNMT1 and anti-miR-377-3p).qRT-PCR was used to detect the expression of circDNMT1 and miR-377-3p of 4T1 cells in each group;CCK-8 was used to detect the proliferation of 4T1 cells in each group;flow cytometry was used to detect the apoptosis of 4T1 cells in each group;Western blot was used to detect the expression of PUM1,EMT-related proteins and apoptosis-related proteins of 4T1 cells in each group;TargetScan website was used to predict the binding sites of miR-377-3p with circDNMT1 and PUM1;dual luciferase report was used to verify the targeting relationships of miR-377-3p with circDNMT1 and PUM1.After inoculation with 4T1 cells,BALB/c mice were randomly divided into the blank control group(injected with equal amount of normal saline),the negative control group(injected with si-NC via tail vein),the DNMT1 silencing group(injected with si-DNMT1 via tail vein),the combined control group(injected with si-DNMT1 and anti-NC via tail vein),and the combined silencing group(injected with si-DNMT1 and anti-miR-377-3p via tail vein),the tumor massess of mice were recorded and the morphological changes of tumors were observed by hematoxylin-eosin staining.Results circDNMT1 and PUM1 were up-regulated in TNBC tissues and cells,and miR-377-3p was down-regulated.The expression difference was most obvious in 4T1 cells,so 4T1 cells were selected for subsequent experiments.Compared with the 4T1 group and the si-NC group,the expression of miR-377-3p,the apoptosis rate of 4T1 cells,the expression levels of Bax,cleaved caspase-3 and E-cadherin protein of 4T1 cells in the si-DNMT1 group were significantly increased(P<0.05),the circ-DNMT1 level,the expression level of PUM1 protein,OD values at 24 hours and 48 hours,the expression level of Bcl-2,N-cadherin,Vimentin protein were significantly decreased(P<0.05).Compared with the si-DNMT1 group and the si-DNMT1+anti-NC group,the expression of miR-377-3p,the apoptosis rate of 4T1 cells,the expression levels of Bax,cleaved caspase-3 and E-cadherin proteins of 4T1 cells in the si-DNMT1+anti-miR-377-3p group were significantly decreased(P<0.05),the expression level of PUM1 protein,OD values at 24 hours and 48 hours,the expression levels of Bcl-2,N-cadherin,Vimentin proteins were significantly increased(P<0.05).Compared with the miR-NC+WT-circDNMT1 group,the cell luciferase activity in the miR-377-3p mimic+WT-circDNMT1 group was significantly decreased(P<0.05);compared with the miR-NC+WT-PUM1 group,the cell luciferase activity in the miR-377-3p mimic+WT-PUM1 group was significantly decreased(P<0.05).The tumor cells in the blank control group and the negative control group were densely arranged with clear boundary;the tumor cells in the DNMT1 silencing group and the combined control group were loosely arranged,the nuclei were pyknotic,and the cell fragments were increased;the tumor cells in the combined silencing group were densely arranged and the boundaries tended to be clear.Compared with the blank control group and the negative control group,the tumor mass of mice in the DNMT1 silencing group was significantly decreased(P<0.05).Compared with the DNMT1 silencing group and the combined control group,the tumor mass of mice in the combined silencing group was significantly increased(P<0.05).Conclusion Silencing circDNMT1 may inhibit the expression of PUM1 by up-regulating miR-377-3p,thereby inhibiting the proliferation and EMT of TNBC cells,and promoting cell apoptosis.

OBJECTIVETo examine whether the enhanced expression of CD40L cDNA on murine ovarian cancer (OVHM) cells could induce the secretion of Th1 cytokines from dendritic cells (DC).

METHODSOVHM cells were transfected with the full-length mouse CD40L cDNA by lipofectamine 2000 and then G418 resistant cells as positive cells were selected. They were examined for their expression of CD40L with flow cytometry. Bone marrow cells were firstly depleted of erythrocytes, macrophages, T and B cells with PE-conjugated magnetic beads, and then cultured in 10% FCS RPMI 1640 medium supplemented with recombinant mouse GM-CSF and IL-4 for 10 days. PKH67-labeled tumor cells were cultured with DC, and then the stained cells were analyzed for the expression of MHC-I, MHC-II, CD80, CD86, CCR7 in DC with flow cytometry. The expression of p40, p19, p35, p28, EBI3 subunits, IL-18, IFN-gamma, Mig gene in cocultured DC-tumor cells were detected by RT-PCR.

RESULTSThe CD40L cDNA was successfully transfected into OVHM cells. Bone marrow-derived DCs, when cultured with CD40L/OVHM, formed clusters with the tumors and showed an upregulated expression of MHC- I, MHC-II, CD80, CD86, CCR7. Expression of the IL-12, IL-23, IL-27, IL-18, interferon-gamma (IFN-gamma) and Mig (monokine induced by IFN-gamma) genes was induced in the DCs that were cultured with CD40L/OVHM but not with OVHM cells.

CONCLUSIONThese data directly showed that the expression of CD40L on ovarian cancer cells facilitates the interaction between DCs and tumors, enhances the maturation of DCs, induces secretion of Th1 cytokines, especially for IL-12, IL-23 and IL-27, which maybe one of the possible antitumor mechanism for CD40L-transfected ovarian cancer cell line.

Animals ; CD40 Ligand ; genetics ; metabolism ; Cell Line, Tumor ; Cells, Cultured ; Coculture Techniques ; Cytokines ; secretion ; DNA, Complementary ; genetics ; Dendritic Cells ; cytology ; metabolism ; Female ; Interleukin-12 ; secretion ; Interleukin-23 ; secretion ; Interleukins ; secretion ; Mice ; Ovarian Neoplasms ; metabolism ; pathology ; Th1 Cells ; secretion ; Transfection