Objective To study the expression of basic fibroblast growth factor(bFGF)in the kidney tissues of chronic interstitial nephritis(CIN).Methods Expression of bFGF was assayed in 30 patients with CIN and 5 normal persons by SP method of immunohistochemical technique.The average gray value and average optical density of the bFGF positive parts and its ratio with the whole visual field had been measured with video analysis system.Results The expression of bFGF in the kidney tissues of CIN was significantly stronger than that in normal tissues.The average gray value,average optical density and the positive areas were significantly high compared with that of normal cases.Conclusion The bFGF can promote the proliferation of fibroblasts and monocytes in renal interstitial patients and lead to renal interstitial fibrosis in the end.

ObjectiveTo observe the effect of rehabilitation on fractures around knee treated with external fixation.Methods48 cases with the fractures around knee who accepted early rehabilitation after external fixation had been observed for 0.5～4 years.ResultsAll the cases came up to clinical healing standards within 7 months. According to Kolmert's standard, the rate of fine and good was 89.6%.ConclusionThere was satisfactory outcome treating fractures around knee with external fixation. Early rehabilitation is important to avoid the knee joint rigor.

Objective To determine the involvement of DNA demethylation in tumor necrosis factor-α(TNF-α)-induced matrix metalloproteinase 9 ( MMP9) expression in human epidermal keratinocytes. Methods Real-time RT-PCR, Western blot, and enzyme-linked immuno sorbent assay (ELISA) were performed to determine the mRNA and protein levels of MMP9 after human keratinocyte cell line (HaCaT) cells were treated with 10 ng/ ml TNF-α or 2. 5 μmol/ L DAC/ 300 nmol/ L TSA. Bisulfite sequencing PCR ( BSP) and Methylation-sensitive high-resolution melt analysis ( Ms-HRM) were used to detect significantly differentially demethylated CpG sites in the human MMP9 promoter region in cells exposed to TNF-α. Different sites methylation constructs of promoter-luciferase reporter gene were made to detect the influences of site-specific DNA demethylation on transcription activity of MMP9 promoter. Results Compared with PBS-treated control, TNF-α significantly increased the expression of MMP9 in HaCaT cells for indicated culture duration ( P < 0. 05 ). Real time PCR, Western blot, and ELISA analysis demonstrated that the mRNA and protein levels of MMP9 were increased initially, followed by a decline with prolonged incubation time. After TNF-α treatment, varied degrees of DNA demethylation occurred at 10 CpG sites in the promoter of MMP9, and the changes at the -36 bp site were statistically significant (P<0. 05). The demethylation at the -36 bp site greatly increased the transcription activity of MMP9. Conclusion TNF-α promotes MMP9 expression in HaCaT cells through inducing -36 bp site DNA demethylation on the promoter of MMP9.

Objective To study the clinical value of detection of peripheral blood natural killer(NK) cells subsets in patients with malignant hematological diseases.Methods A total of 100 patients with malignant blood disease were enrolled from March 2014 to April 2016 as the observation group,including 50 cases in acute stage and 50 cases in mild stage.At the same time,100 health subjects were enrolled as the control group.The number of NK cells in peripheral blood and the changes of subgroups were compared.Results The number of NK cells in the different groups were compared,the absolute numbers and relative numbers of NK cells in the acute phase of leukemia and lymphoma were much lower than those in the control group(P<0.05).While the absolute number and relative number of NK cells in mild stage of leukemia and lymphoma were higher than that in acute phase(P<0.05).After treatment,the absolute number and relative number of NK cells in patients with leukemia and lymphoma were higher than before treatment(P<0.05).Before treatment,levels of CD56bright and CD56dim in patients with leukemia and lymphoma were statistically different with those of control group(P<0.05).After treatment,CD56bright and CD56dim levels were significantly improved in both groups(P<0.05).Conclusion The number of peripheral blood NK cells in patients with hematological malignancies could be reduced,and the cells function might be compromised.Detection of NK cell subsets could be with guiding significance in the treatment of malignant hematologic disease.

Objective To investigate the influence of perioperative continuing aspirin therapy on tooth extraction surgery in elderly patients with coronary heart disease.Methods A total of 926 patients with coronary heart disease who required tooth extraction were enrolled in this study.Among them,241 patients discontinued aspirin therapy before tooth extraction,685 patients continued aspirin therapy before tooth extraction.The entering rate of operation was evaluated.100 patients continuing aspirin and 100 patients discontinuing aspirin were randomly selected.Systemic pressure,diastolic pressure and heart rate before and after tooth extraction were detected.100 matched healthy elderly patients were selected as normal control group.Multivariate logistic regression analysis was used to estimate the risk for tooth extraction.Results The entering rate of operation was 67.9％ (131 cases) in 193 patients with angina pectoris discontinuing aspirin therapy and 82.1 ％ (312 cases) in 380 patients with angina pectoris continuing aspirin therapy (x2 =14.77,P＜0.01).The entering rate of operation was 41.7％ (20 cases) in 48 patients undergoing coronary revascularization and discontinuing aspirin therapy,and 80.7％ (312 cases) in 305 patients undergoing coronary revascularization and continuing aspirin therapy (x2=33.95,P＜0.01).The changes in systolic blood pressure before versus after dental extraction had a significant difference between the discontinuing aspirin group and control group [(15.9±5.5) mmHg vs.(12.2±4.7)mmHg,P＜0.05,1 mmHg=0.133 kPa],while had no significant difference between the continuing aspirin group and control group [(13.6±4.5) mmHg vs.(12.2±4.7) mmHg,P＞0.05].There were no significant differences in changes in diastolic blood pressure and heart rate in the intraoperative period between the patients and controls (P＞0.05).The bleeding rate in patients continuing aspirin therapy was not significantly different as compared with control group (P＞ 0.05).Multivariate logistic regression analysis revealed that perioperative discontinuing aspirin therapy remained the second significant risk factor for tooth extraction.Conclusions Preoperative administration of aspirin should be continued in dental extraction surgery in elderly patients with coronary heart disease.

Objective To explore the effects of lead acetate on free radicals and lipid peroxidation in the cerebral cor?tex, cerebellum, and hippocampus in rat brains. Methods SD rats (n=48), who were just weaned, were randomly divided in?to 4 groups base on their weight. Then the rats were fed with lead acetate in drinking water at the final concentrations of 0 mg/L (deionized water), 200 mg/L, 400 mg/L, 800 mg/L respectively. Blood lead level as well as the hydroxyl free radical inhibiting activity, the levels of hydrogen peroxide (H2O2) and malondialdehyde (MDA) in cerebral cortex, cerebellum, and hippocam?pus were measured 60 days after lead contamination in water. Results Upon lead exposure, blood lead levels increased sig?nificantly as compared with the control. The hydroxyl free radical inhibiting activity in cerebral cortex, cerebellum, and hip?pocampus decreased significantly in a dose dependent manner of lead(P < 0.05). And they all correlated negatively with blood lead level (r=-0.505,-0.414,-0.448, P<0.05). By contrast, blood lead level was positively correlated with H2O2 and MDA in these brain tissues (r=0.301, 0.411, 0.378, and 0.404, 0.324, 0.510,P < 0.05). Conclusion Lead exposure can lead to lipid peroxidation of rat brain tissues through inducing free radicals.

Adult ; Female ; Humans ; Paraquat ; poisoning

Hot Temperature ; Humans ; Industry ; Occupational Exposure ; Occupational Health

Child, Preschool ; Esophageal Stenosis ; congenital ; Female ; Humans ; Larynx ; abnormalities ; Pharynx ; abnormalities

BACKGROUND: Neural behavior is a sensitive parameter for predicting abnormal central nervous growth that is resulted from multiple factors. Therefore this study was designed to explore the influence of hypothermia and cigarette smoke exposure during pregnancy on neural behavioral growth of neonatal rats.OBJECTIVE: To study the influence of hypothermia and cigarette smoke exposure on neural behavioral growth of neonatal rats.DESIGN: Randomized case control study based on experimental animals. SETTING: Obstetric and Gynecological Department , Third Affiliated Hospital of Xinxiang Medical College; Cytobiological Department of Xinxiang Medical College.MATERIALS: Totally 270 healthy unpregnant SD rats were obtained, including 180 males with body mass of 190- 210 g, and 90 female rats with body mass of 225-275 g. Rats were raised with granulated feed and drinking water routinely in room of 25 ℃ with natural sunlight. Male and female rats in estrus were put in the same cage overnight in proportion of 2: 1, pregnancy was confirmed if vaginal bolt was observed the following morning. Totally 160 pregnant rats were obtained and randomly divided into 16 groups that were exposed to hyperthermia, cigarette smoke or their combination and by this way, earlier reflex, learning and memory of neonatal rats were observed after natural delivery,INTERVENTIONS: From the second day of pregnancy, rats in 37 ℃, 41 ℃,42 ℃ hyperthermia combining cigarette group received subcutaneous injection of 1 mL smoke hydrotrope every other day, while rats in 25 ℃ control group and 37 ℃, 41 ℃, 42 ℃ single hyperthemia groupwere given 2.0 mL double distilled water every day for totally 7 times. From the pregnancy of 10 days, pregnant rats were put into incubator, and rats anus temperature should be kept respectively at(37 ±0.5) ℃, (41 ±0.5)℃, (42 ±0.5)℃in the 37 ℃, 41 ℃, 42 ℃ of single hyperthemia groups and the temperature should last for 2.0 minutes; nats of 37 ℃, 41 ℃, 42 ℃hyperthemia combining cigarette group received the same treatment and were divided into four subgroups with the duration of 0. 5, 1.0, 1.5, 2.0 minutes respectively;rats in 25℃ control group were not exposed to hyperthermia. Rats were then singly raised from the pregnancy of 18 days for natural delivery. Pregnant days, number of neonatal rat and death rats were recorded, and visible malformation was observed. The average body masses of each cote of neonatal rats were measured every week. Time of eye-opening, ear-opening, hair-growing and teething were observed for assessing their physical growth. Reflex and sensory function of neonatal rats, such as planar tuning, spatial turning, visual orientation and auditory surprise was observed at 3, 7, 12, 16 days after birth respectively; The mean targeting time of each cote was used as reference for assessing their feflex. Y-lybirinth test was used for assessing learning and memory function of neonatal rats(30 days after birth).MAIN OUTCOME MEASURES: ① Main outcomes: Reflex and sensory, such as planar tuning, spatial turning, visual orientation and auditory surrise. ② Secondary outcomes: Influence of hyperthemia and cigarette exposure on learning memory function of neonatal rats.RESULTS: For hyperthermia group(41C and 42C), targeting time of neonatal rat physical growth(eye-opening, ear-opening, hair-growing and teething) and reflex sensory function(planar tuning, spatial turning, nvisual orientation and auditory surprise), as well as learning and memory(minute) were obviously delayed in contrast with those of the control group and 37 C group(χ2 = 11.34, P ＜0.01 ); meanwhile, longer hyperthermia exposure (1.5 minutes) combined with cigarette smoke had supplementary effect on the above neural behaviors, which was significantly different from that of single hyperthermia group(χ2=10.29, P＜0.01).CONCLUSION: Abnormal neural behavior of neonatal rats, such as growing retardation, learning and memory obstacle could be induced by the combination of longer hyperthemia exposure and cigarette smoke.