Air ; analysis ; Air Pollutants, Occupational ; analysis ; Electrophoresis, Capillary ; Esters ; analysis ; Phthalic Acids ; analysis ; Sensitivity and Specificity

Acetamides ; pharmacology ; Animals ; Bridged-Ring Compounds ; poisoning ; Disease Models, Animal ; Female ; Male ; Rats ; Rats, Sprague-Dawley ; Troponin I ; blood

Objective To screen proteins binding with interferon?(IFN?)from human hepatic cDNA libraty by yeast-two hybrid technique.Methods The IFN?gene was amplified by polymerase chain reaction(PCR)and constructed into pGBKT7 vector as the bait plasmid in yeast-two hybrid system3,pGBKT7-IFN?was then transfected into yeast AH109.The transfected yeast were mated with yeast Y187 containing liver cDNA library plasmid in 2?YPDA medium.Diploid yeast was plated on synthetic dropout nutrient medium(SD/-Trp Leu-His-Ade)and synthetic dropout nutrient medium(SD/-Trp-Leu-His-Ade)containing X-?-gal for selecting.After plasmid extracting and en- zyme cutting analysis,the blue colonies were performed sequence analysis,the results were analyzed by bioinformatics.Results IFN?gene was successfully cloned and expressed in yeast cells.Thirty- four positive colonies were obtained using yeast-two hybrid technique.After sequence analysis,eight clones were found may have a binding effect with IFN protein.Conclusions IFN?genes was success- ful cloned and eight proteins that could bind with IFN?protein were also screened.

Objective To investigate the protective effect of transection of cervical sympathetic trunk (TCST)on the fetal brain in rats with pregnancy-induced hypertension(PIH).Methods Thirty-two pregnant Wistar rats were randomly divided into 4 groups(n=8 each):A control group;B PIH group;C TCST+PIH group and D sham operation+PIH group,PIH was produced by L-NAME 12.5 mg?100g~(-1) given subcutaneously from 14~(th)-20~(th) day of gestation.In group A normal saline was given instead of L-NAME.In group C TCST was performed on the 14~(th) day of gestation and L-NAME was injected asin group B.In group D the cervical sympathetic trunk was only exposed but not cut.Caesarean section was performed and fetus was taken on the 21~(st) day of gestation.The ultrastructure of fetal brain was examined.The content of ATP,ADP and AMP in the fetal brain and the Na~+-K~+-ATPase and Ca~(2+)-ATPase activity in neuronal plasmalemma were determined.Results The ultrastructure of the fetal brain was almost normal in group A and C,but was seriously damaged in group B and D.The ATP and adenylic acid content in the brain tissue and the Na~+-K~+-ATPase and Ca~(2+)-ATPase activity in neuronal plasmalemma were significantly lower in group B and D than in group A and C.Conclusion TCST has protective effect on the fetal brain in rats with PIH by improving energy supply and enhancing pump function of neuron.

Abstract: Objective　To investigate the fundus arteriosclerosis and its influencing factors in HIV/AIDS patients after long-term highly active antiretroviral therapy (HAART). Methods　The clinical basic data and fundus examination data of 203 HIV/AIDS patients before and after HAART in the Fourth People 's Hospital of Nanning from January 2020 to June 2022 were collected to evaluate the occurrence of fundus arteriosclerosis and analyze its influencing factors. Results　Of the 203 HIV/AIDS patients, 159 patients developed fundus arteriosclerosis, with an incidence of 78.33%, including 33 patients with grade Ⅰ(20.75%), 87 patients with grade Ⅱ (54.72%), 28 patients with grade Ⅲ(17.61%), and 11 patients (6.92%) with Grade Ⅳ. Before HAART, there was no significant difference in CD4+T lymphocyte count, CD8+T lymphocyte count, viral load, white blood cell count, platelet count, hemoglobin, serum creatinine, blood urea nitrogen, triacylglycerol, total cholesterol, fasting blood glucose, alanine aminotransferase, aspartate aminotransferase and serum total bilirubin between the atherosclerosis group and normal group (P>0.05). After 6 months of HAART, CD8+T lymphocyte count, triacylglycerol and fasting blood glucose in atherosclerosis group were significantly higher than those in normal group (P<0.05). In the stratified comparison of CD4+ and CD8+ lymphocyte counts after 6 months of HAART, the proportion of patients with CD4+ lymphocyte count (CD4+)<200 (cells/μL) in the atherosclerosis group was significantly higher than that in the normal group; the proportion of patients with CD4+ lymphocyte count (CD4+)≥500 (cells/μL) was significantly lower than that in the normal group; the proportion of patients with CD8+ lymphocyte count CD8+≥ 800/μL was significantly higher than that in the normal group (all P<0.05). Binary logistic regression analysis showed that opportunistic infection, HIV course, CD4+T, CD8+T lymphocyte count after HAART and triglyceride were independent risk factors for ocular fundus atherosclerosis in HIV/AIDS patients (all P<0.05). Conclusions　The incidence of ocular fundus arteriosclerosis is high in HIV/AIDS patients. More than 4 years of HIV course, combined opportunistic infection, Low CD4+T lymphocyte count after 6 months of HAART, high CD8+T lymphocyte count and high triglyceride level are independent risk factors for ocular fundus arteriosclerosis in HIV/AIDS patients. Fundus screening should be performed before and after HAART in such population, HAART program should be formulated for the risk of cardiovascular disease, and risk management of cardiovascular disease should be strengthened during treatment to improve patient outcomes.

ObjectiveTo investigate the effect of speech therapy on mental health of patients with aphasia. MethodsCRRCAE and SCL-90 were used to assess the speech and mental state in 28 aphasia patients. All aphasia patients were treated by using speech therapy and the changes before and after treatment were compared. ResultsThe scores in listening comprehension, repetition, naming, reading,reading comprehension, writing and counting were distinctly higher at post-treatment than that at pre-treatment. All SCL-90 factor's levels at post-treatment were distinctly reduced than that at preat post-treatment(P<0.01).Conclusions Speech therapy can improve the language function,as well as mitigate the mental symptoms.

Objective To study the impact of hypothyroidism on sperm motility in male rat.Methods According to body weight,20 male Wistar rats were randomly divided into control group and hypothyroidism group (1 ml/100 g/day,0.1％ propylthiouracil by intragastric administration for 60 days) 10 rats in eachgroup.Body weight of these rats was observed every 3 days.After the last intragastric administration,all rats were killed.The levels of thyroid hormones [total triiodothyronine (T3),total thyroxine (T4),and thyroid stimulating hormone (TSH)] were measured by radioimmunoassay.Sperm motility parameters[average path velocity(VAP),straight fine velocity (VSL),straightness (STR),amplitude of lateral head displacement (ALH),sperm density(p),curvilinear velocity (VCL),linearity(LIN),wobble (WOB),mean angular deviation (MAD) and beat cross frequency (BCF)] were measured by a WLJY-9000 color-detection system.Results Compared with the control groups[(298.20 ± 12.15) g,(344.00 ± 13.73)g],the weights of hypothyroidism group of the 30 days[(239.00 ± 15.02) g] and the 60 days [(232.67 ± 17.86)g] were significantly lower(t =7.704,11.380,all P ＜ 0.05).The levels of T3[(373.3 ± 101.3) ng/L] and T4 [(4.00 ± 0.89) × 103 ng/ml] of hypothyroidism group were significantly decreased compared with that of the control groups [(1000.0 ± 273.5)ng/L,(44.33 ± 7.84)× 103 ng/L,t =5.262,12.520,all P ＜ 0.05].Level of TSH[(5.77 ± 0.89) × 103 U/L] of hypothyroidism group was significantly increased compared with that of the control group[(1.87 ± 0.70) × 103 U/L,t =8.413,P ＜ 0.05].Values of VAP[(27.45 ± 1.59)μm/s],VSL [(21.08 ± 1.10)μm/s],STR[(70.53 ± 3.48)％] and ALH[(1.96 ± 0.26)μm] of hypothyroidism group were significantly increased compared with that of the control groups[(24.38 ± 2.59)μm/s,(17.99±2.06)μm/s,(65.93 ± 2.71)％,(1.53 ± 0.27)μm,t =2.687,2.404,2.420,3.175,all P ＜ 0.05].p[(5.07 ± 0.74)109/L] of hypothyroidism group was significantly decreased compared with that of the control group [(8.76 ± 1.01)109/L,t =6.463,P ＜ 0.05].VCL[(52.83 ± 5.56)μm/s],LIN[(38.58 ± 3.41)％],WOB[(52.64 ± 3.24)％],MAD [(64.21 ± 6.71) radian/s] and BCF [(8.93 ± 0.62) Hz] of hypothyroidism group were not significantly different compared with that of the control groups[(49.92 ± 6.43) μm/s,(36.52 ± 2.73)％,(52.49 ± 3.49)％,(62.77 ± 7.34)radia/s,(9.32 ± 0.61)Hz,t =0.805,1.089,0.037,0.341,1.033,all P ＞ 0.05].Conclusion Hypothyroidism can affect sperm activity in male rats,decrease sperm density and cause damage to the reproductive system.

Objective To observe the effects of diazepam on the percen-tage of δ -band power of quantitative pharmaco -electroencephalogram ( QPEEG ) in rabbits and the relation with benzodiazepine receptor.Methods Thirty-six healthy rabbits were randomly divided into 6 groups (each n=6),where rabbits in each group were intravenously injected with 1 mL· kg-1 0.9%NaCl (blank group), 0.12 mg· kg-1 , 0.25 mg· kg-1 or 0.50 mg· kg-1 diazepam groups, 0.1 mg· kg-1 flumazenil group and 0.1 mg· kg-1 flumazenil +0.5 mg· kg-1 diazepam ( combined group ).Then a digital EEG system was adopted to record the changes of QPEEG in eight encepha-lic regions before and after injection at each time point.Results The per-centage of δband power in eight encephalic regions of 0.25, 0.50 mg· kg-1 diazepam groups are noted increase within 0.5 to 30 min.The change of the percentage of δ band power has a positive correlation with diazepam dose.Compared with the 0.5 mg· kg-1 diazepam group,the percentage of δ-band power in combined group was lower at same time point.Conclusion Diazepam increases the percentage ofδ-band power of QPEEG in the way of dose dependence in rabbits.It indicates that benzodiazepine receptor mediates the effect of diazepam and the percentage of δ-band power may become an index that reflects the degree of sedation and hypnosis.

Background Researches demonstrated that dendritic cells(DCs) are uniformly immature in the central cornea but mature in the peripheral region of cornea.So an important question is which factor impact the maturation of DCs,especially in terms of corneal transplant rejection and the known roles of DCs in the development and persistence of some corneal diseases.Objective This study aimed to examine whether corneal stroma cells (CSCs) inhibit DCs maturation through secreting transforming growth factor beta 2 (TGF-β2) and prostaglandin E2 (PGE2).Methods DCs,T cells and CSCs were isolated and cultured from clean BALB/c and C57BL/6 mice.The level of PGE2 and TGF-β2in CSCs culture supernatant and the fresh RPMI 1640 medium were then analyzed by enzyme linked immunosorbent assay (ELISA).During the DCs maturation stage,the neutralizing TGF-β2 antibody and the EP2 receptor antagonist AH6809 were added in the CSCs culture supernatant respectively.According to the different treatment,cultured cells were assigned to different groups as follows:control group,CSCs culture supernatant group,AH6809 group,TGF-β2 antibody group,AH6809 +TGF-β2 antibody group.Subsequently,the cellular surface markers for DCs,including CD11c,CD80,CD86,and MHC- Ⅱ,were analyzed by flow cytometry.The capability of stimulating the proliferation of T lymphocytes was evaluated by allogeneic mixed lymphocyte reactions,and the function of endocytosis was assessed by fluorescein isothiocyanate-dextran(FITC) uptake.Results The data of ELISA showed a higher concentration of TGF-β2 and PGE2 in murine CSCs culture supernatant than in the fresh RPMI 1640 medium.Compared with the CSCs culture supernatant group,the expression of CD80,CD86,and MHC- Ⅱ was up-regulated ( P ＜ 0.05 ),the expression of dextran was down-regulated ( P ＜ 0.05 ),and the stimulate index was increased( P＜ 0.05 ) in the TGF-β2 antibody group; the expression of CD86,and MHC-Ⅱ was up-regulated (P＜0.05),the expression of dextran was down-regulated ( F =13.740,P =0.006 ),and the stimulate index was increased(P＜0.05) in the AH6809 group;the expression of MHC-Ⅱ was up-regulated and the stimulate index was increased with statistical difference in interaction(P＜0.05 ) in the AH6809+TGF-β2 antibody group.Compared with the control group,the expression of CD80 and CD86,and the stimulate index was still lower(P＜0.05 ).Conclusions TGF-β2 and PGE2 contribute to the inhibitory effects on DCs maturation mediated by murine CSCs in vitro and further have additive effect on the immunosuppression of DCs.

Objective To examine the effects of comprehensive family intervention on family function among HIV-infected injection drug users (IDUs). Methods Ninety-eight HIV-infected IDUs in 3 AIDS treatment sites in Hunan Province were selected by random cluster sampling and were randomly divided into the intervention group (50 cases) and the control group (48 cases). Subjects in the intervention group were given a 9-month comprehensive family intervention, while those in the control group received standard treatment and care. When the study was completed, APGAR questionnaire was used to analyze the effects of comprehensive family intervention. Results Before the intervention ,the scores of family function were not significantly different the intervention group and the control group. After the intervention, the scores of family function among the control group were(4.26± 3.73) points and the intervention group was (6.53± 4.29) points, the scores of family function were significantly different between the two groups. Conclusions The comprehensive family intervention is an effective model to improve the family function of HIV-infected injection drug users.