Chromium ; toxicity ; DNA Methylation ; drug effects ; Epigenesis, Genetic ; Humans

Adult ; Dimethylformamide ; adverse effects ; Glutathione ; blood ; Humans ; Male ; Methanol ; adverse effects ; Nitric Oxide ; blood ; Occupational Exposure ; Oxygen ; metabolism ; Superoxide Dismutase ; blood ; Surveys and Questionnaires ; Toluene ; adverse effects

20% . In both groups CH was induced with infusion of 0.01% sodium nitroprusside (NTP) to maintain MAP at 55-65 mm Hg. MAP, HR, CVP cardiac output were continuously monitored. Arterial blood samples were taken before (T0 ) and after AHH (T1 ) , 30 min after CH was induced (T2 ) and 30 min after tennination of CH (T3 ) for blood gas analysis and determination of plasma levels of electrolytes and ?2-microglobulin.Results The two groups were comparable with respect to the demographic data including age, body weight and height. In group Ⅰ pH was significantly decreased after AHH and CH (T1-3) compared to the baseline (T0 ) and was significantly lower than that in group Ⅱ . There was no significant difference in plasma K+ , Na+ , Ca2+ , Cl- and BE between the two groups. Plasma?2- MG decreased significantly after AHH (at T1 ) compared to the baseline value before AHH (T0) in group Ⅰ and was significantly lower than that ingroup Ⅱ at T1-3 . Conclusion Glomerular filtration rate decreases during controlled hypotension as shown by increased plasma?2-MG. AHH combined with CH can improve glomerular filtration rate while exerts no significant effects on blood gases and electrolytes.

[Objective] To sum up researches on components, pharmacological actions and toxicity of Polygonum multiflorum Thunb(Heshouwu). [Method] The research reference about Heshouwu in CNKI, VIP and PUBMAD database is col ected and calssified to three aspects on components, pharmacological actions and toxicity.[Result]①On components:Heshouwu contains stilbene, lecithin, anthraquinone, flavonoids, tannin and trace elements. The stilbene and anthraquinone are the mainly active components. Producing area, growth years, harvest time and processing methods are factors affecting the content of the components such as TSG in Heshouwu; Macroporous adsorption resin is the main separation method for preconcentration of TSG and anthraquinone constituents; ② On pharmacological actions and toxicity: Heshouwu has effects of hypolipidemic and liver protection, antioxidative, anti-osteoporosi, hpyerglycemic, antidepressive and antibiosis, the hypolipidemic and liver protection are the main effects which have been studied more. A reversible liver injury which displays as abnormal liver function parameter and bile metabolic disorder would be induced if the Heshouwu is administrated with a large dosage for long term. The possible components which would induce the toxicity in Heshouwu are tannin and anthraquinone, and the anthraquinone is the component with double effects of toxicity and therapy which should be considered in clinical application. [Conclusion]Reducing lipid and protecting liver is the main pharmaceutical function of the herb. As a commonly used Chinese herb for liver protection, the studies on alcoholic hepatic injury protection of Heshouwu may be a point for the researchers to focus on. The comparison studies on hypolipidemic and liver protection between Hesouwu and its processing products, and the correlations between components and pharmacological actions are worth study further.

OBJECTIVE: It's practically significant to study college students' behavior and psychology in using the Internet so as to guide them to take advantage of the Internet properly and to promote the proper use of the Internet. DATA SOURCES: The related articles indexed in the Medline Databank from January 2000 to January 2004 were searched by using computer with the index words "students' psychology, computer communication netware, elements analysis", and the language of the articles was limited to English. Meanwhile, the related articles indexed in the Full-length Chinese Journals Databank, Wanfang Databank and the Journal of Chinese Clinical Rehabilitation from January 2000 to January 2004 were searched through the computer with the index words "students' behavior, internet behavior, analysis of elements ", and the language of the articles was limited to Chinese. The subjects of the study were the Chinese college students aged 18 -24.STUDY SELECTION: The materials were studied first to choose the literature on the analysis of the collage students' Internet psychology and behavior. Inclusion criteria: ① random clinical trials; ② Aged 18-20. Exclusion criteria: ① Obviously not random clinical trials; ② Repeated study, syntheses, and Mata analysis articles. For the articles that we found, we conducted a search for each full-length article.DATA EXTRACTION: A total of 81 articles accorded with the standards were involved.DATA SYNTHESIS: From the comprehensive analysis of involved articles, we found that more college students' use the web just for communication, entertainment, excitement, and spiritual sustenance.CONCLUSION: This paper analyzes the modern college students' behavioral and psychological characteristics in Internet use from the perspectives of self-awareness, mood and emotion motivation, sexual psychology and so on respectively. It also puts forward an educational policy on how to instruct the college students to make use of the Internet properly and overcome the problems of psychology towards the Internet.

Objective To study the expression of activator protein-1(AP-1)and connexin 43(Cx43)in uterine smooth muscle of term pregnancy and its relationship with preterm delivery.Methods Immuno-histochemistry was applied for 15 uterine smooth muscle samples of term pregnancy without labor(Group Ⅰ),15 of term pregnancy in labor(group Ⅱ)and 10 of preterm delivery in labor(group Ⅲ)to investigate the expression of two subunits of AP-1(c-Jun and c-Fos)and Cx 43. Results (1)The expression of Cx43 in group Ⅰ and Ⅱ(4.33±0.51 and 4.20±0.42)were significantly higher than that in group Ⅲ(3.15±0.41,P<0.01).Lable index of c-Jun protein in group Ⅲ,Ⅱ and Ⅰ was(52.34±4.18)%,(45.25±5.24)%and(34.14±4.26)%,respectively (P<0.01),and the lable index of c-Fos protein was(53.48±4.36)%,(43.32±6.21)%and(31.29±3.34)%,respectively(P<0.01).Positive correlation was found between the expression of Cx43and c-Jun,c-Fos in pregnancy uterine smooth muscle(r=0.65,0.63,P<0.01). ConclusionsThe Cx43 plays an important role in the onset of labor.The expressions of Cx43 is positively related with the expression of AP-1 in pregnancy uterine smooth muscle.

Objective: To evaluate the risk of depressive disorders using memory task indicators, so as to provide insights into clinical assessment of depressive disorders. Methods: A total of 68 patients with depressive disorders undergoing treatments in the departments of psychiatrics and clinical psychology in a tertiary hospital during the period from January to September, 2021 were enrolled as the case group, while a total of 31 hospital employees, social volunteers and university students served as controls. The error rate and response time of classical memory task experiments were compared between the two groups, including implicit memory, short-term memory and working memory tasks. In addition, the predictive indicators of depressive disorders were identified using multivariable logistic regression analysis and receiver operative characteristics (ROC) curve. Results: The case group included 29 men and 39 women and had a mean age of (24.12±7.40) years, including 46 subjects with an educational level higher than diploma. The control group included 15 men and 16 women and had a mean age of (26.45±6.65) years, including 23 subjects with an educational level higher than diploma. Multivariable logistic regression analysis showed significant associations of age of >18 years (OR=3.431, 95%CI: 1.259-9.350), error rate of 2-back task (OR=1.056, 95%CI: 1.016-1.097) and error rate of short-term memory tasks (OR=1.078, 95%CI: 1.009-1.152) with the development of depressive disorders. ROC curve analysis showed that the error rate of 2-back tasks showed an area under the ROC curve (AUC) of 0.730 (95%CI: 0.630-0.831), cutoff of 22.5%, sensitivity of 42.6% and specificity of 93.5% for prediction of the risk of depressive disorders, and the error rate of short-term memory tasks showed an AUC of 0.717 (95%CI: 0.605-0.829), cutoff of 23.5%, sensitivity of 67.6% and specificity of 71.0% for prediction of the risk of depressive disorders. In addition, the combination of the error rate of 2-back tasks and the error rate of short-term memory tasks showed an AUC of 0.829 (95%CI: 0.734-0.923), sensitivity of 75.0% and specificity of 80.6% for prediction of the risk of depressive disorders. Conclusion Short-term and working memory task indicators are feasible for assessment of the risk of depressive disorders.

Desmoid tumor(DT),a rare benign tumor sometimes with local invasion,is more frequently seen in patients with familial adenomatous polyposis(FAP) than in the general public,which might be associated with surgical trauma,genetic predisposition and hormonal factors.Fifty percent of FAP-associated DTs are intra-abdominal,usually present as non-tender,slowly growing masses.The symptoms include abdominal pain,vomiting and diarrhea,etc.Mesenteric DT can cause obstruction and ischemia of intestine,hydronephrosis and fistula.Diagnosis can be made through biopsy or CT scanning.Surgery should be considered for the abdominal wall DTs and medicine is the first choice for mesenteric DTs.Surgery should be chosen with caution.

Objective To discuss the effect of Qingdushuan on SiHa cells of cervical cancer proliferation and protein expression in PTEN-MDM2-p53 network from the level of cell biology and molecular biology. Methods SiHa cells were cultivated with 4% containing serum. Normal control group, blank serum group, Qingdushuan group, Baofukang group and interferon group were established. The influence of inhibiting and proliferating SiHa cell was detected by MTT assay. Three protein expression was detected by Western blot method. Results After cultured with drug containing serum, the number of cells decreased, 4% concentration of serum for 72 h was the strongest. Compared with the control group, there were significant differences (P

Objective: To investigate the influencing factors of nosocomial infections among patients undergoing radiotherapy, so as to provide insights into nosocomial infection control among radiotherapy patients. Methods: The malignant tumor patients receiving radiotherapy in Yiwu Central Hospital from 2019 to 2020 were selected. Their demographic features, radiotherapy and nosocomial infections were collected through the eletronic medical records. The factors affecting nosocomial infections were identified among radiotherapy patients using a multivariable logistic regression model. Results: Totally 553 malignant tumor patients receiving radiotherapy were enrolled, including 268 men ( 48.46% ) and with a mean age of ( 60.31±13.66 ) years. The mean duration of hospital stay was ( 28.67±14.32 ) days, and the mean radiotherapy cycle was ( 3.63±1.89 ) weeks. A total of 46 patients were detected with nosocomial infections, with prevalence of 8.32%. The top three sites with the highest prevalence of nosocomial infections included the lower respiratory tract ( 14 cases, 30.43% ), oral cavity ( 10 cases, 21.74 ) and urinary tract ( 8 cases, 17.39% ), and 42 bacterial strains were isolated, with Gram-negative bacteria as the predominant strains ( 25 strains, 59.52% ). Multivariable logistic regression analysis showed that radiotherapy cycle of 4 weeks and longer ( OR=3.857, 95%CI: 1.896-7.846 ), radiotherapy exposure ( OR=3.254, 95%CI: 1.561-6.783 ), arteriovenous catheterization ( OR=2.165, 95%CI: 1.144-4.098 ), urinary tract intubation ( OR=6.028, 95%CI: 1.841-19.734 ) and poor nutritional status ( OR=3.933, 95%CI: 1.493-10.360 ) were associated with nosocomial infections among radiotherapy patients. Conclusion Radiotherapy cycle, exposure to radiotherapy, arteriovenous catheterization, urinary tract intubation and poor nutritional status are factors affecting nosocomial infections among radiotherapy patients.