Objective To investigate the effects of inhalation of isoflurane at different time points on hypoxic-ischemic brain injury in neonatal rats.Methods One hundred and eighty 7-day-old Sprague-Dawley rats,weighing 12-16 g,were randomly divided into 6 groups (n =30 each):sham operation group (group Ⅰ),cerebral hypoxia/ischemia (H/I) group (group Ⅱ),and inhalation of isoflurane at different time point groups (groups Ⅲ-Ⅵ).Brain ischemia was induced by double ligation of left common carotid artery followed by inhalation of 8 ％ O2 + 92 ％ N2 for 2 h at 37 ℃.In groups Ⅲ,Ⅳ,Ⅴ and Ⅵ 1.5 ％ isoflurane was inhaled for 30 min starting from 0,3,6,12 h after H/I respectively,while the rats were exposed to 30％ O2 and 70％ N2 only in groups Ⅰ and Ⅱ.The survival rate at 7 days after H/I was recorded.The animals were sacrificed at 7 days after H/I.The brains were removed and the right and left cerebral hemispheres (CH) were weighed separately.The ratio between left/right CH was calculated.The density of normal neurons in ventral posterior inferior thalamic nucleus and posterior cingulate cortex in left and right CH were measured and the ratio of the density of normal neurons in the left to right CH was calculated.Results Compared with group Ⅰ,the weight of left cerebral hemisphere,ratio between left/right CH,and ratio of the density of normal neurons in the left to right CH were significantly decreased in other five groups (P ＜ 0.05).Compared with group Ⅱ,the weight of left cerebral hemisphere,ratio between left/right CH,and ratio of the density of normal neurons in the left to right CH were significantly increased in groups Ⅲ,Ⅳand Ⅴ (P ＜ 0.05).There were no significant differences in the indices nentioned above among groups Ⅲ,Ⅳand Ⅴ (P ＞ 0.05).There was no significant difference in the survival rate among groups Ⅱ-Ⅵ (P ＞ 0.05).Conclusion Inhalation of 1.5％ isoflurane for 30 min within 6 h after cerebral H/I can reduce the cerebral injury in neonatal rats.

Objective To investigate effects of Kanglaite injection on proliferation, cycle and apoptosis of human breast cancer MCF-7 cells;To discuss its relevant mechanism. Methods Logarithmic growth phase cells were divided into control group and Kanglaite-treatment group (10, 20, 40μL/mL). Cells were cultured in RPMI-1640 for 24 h before drug treatment. The inhibition rate of Kanglaite injection on proliferation of human breast cancer MCF-7 cells was detected by MTT assay. Apoptosis and cell cycle of MCF-7 cells were detected by flow cytometry. Changes in cell nucleus were determined by Hochest staining assay. Protein expressions of Bcl-2 and Bax were detected by ELISA and Western blot. Results Kanglaite injection for 12 h, 24 h or 48 h resulted in a significant inhibition of MCF-7 cells proliferation (P<0.05, P<0.01);Compared with the control group, Kanglaite injection-treated cells showed increased percentage in G2/M and G0/G1 phases (P<0.001, P<0.01), but showed decreased percentage in S phase (P<0.01), and apoptosis rate increased (P<0.05, P<0.001). Kanglaite injection significantly decreased protein expression of Bcl-2, and enhanced protein expression of Bax of MCF-7 cells (P<0.01, P<0.001). Conclusion Kanglaite injection can inhibit the proliferation of human breast cancer MCF-7 cells, decrease cell cycle and induce apoptosis, the mechanism is related with decreasing protein expression of Bcl-2 and enhance the protein expression of Bax.

Rehabilitation is very important to the therapeutic effect of total knee arthroplasty, and it's also the key measure for the knee function to reach the expected effect after the surgery. The most important contents of rehabilitation therapies are the training of muscle strength, range of joint motion, joint position sense and gait. Integrated rehabilitation therapies was used to improve the knee function as possible, such as all kinds of training to improve the knee muscle strength of flex and extend; early training of continued positive motion of knee joint to improve the knee range of motion; the training of knee joint position sense to improve the ability of motion control, posture adjusting and balance keeping; the gait training to adjust the unusual gait.

Adult ; Aged ; Aged, 80 and over ; Drugs, Chinese Herbal ; therapeutic use ; Esophageal Neoplasms ; radiotherapy ; Female ; Humans ; Lung Neoplasms ; radiotherapy ; Male ; Middle Aged ; Phytotherapy ; Radiation Pneumonitis ; drug therapy

Eighty-five endophytic fungal strains were isolated from the roots、stems and leaves of Polygala tenuifolia Willd, among which, fifty-two from natural plants and thirty-three from cultivated ones. Sev-enty-six strains were classified as twenty-three fungal genera. The inhibitory activity screening to fourteen microbe were conducted research. The results showed that some endophytic fungi had remarkble inhibitory activities to Bacillus subtilis, Shigella sonnei, Escherichia coli, Candida albicans, Fusarium kyrushuense and they were all belonged to Fusarium, Alternaria, Aphanocladium respectively. All of the endophytic fungi isolated from Polygala tenuifolia showed no inhibitory activities to Staphyloccocus aureus, Salmonel-lae enteritis, Bibrio parahemolyticus.

Abstract: Objective　To study the characteristics and diagnostic efficacy of Rose-Bengal plate agglutination test (RBPT), standard-tube agglutination test (SAT) and enzyme-linked immunosorbent assay (ELISA) in the diagnosis of brucellosis. Methods　A total of 489 suspected brucellosis patients with complete records, who admitted to Xing'anmeng People's Hospital from March 2020 to May 2021, were selected as the subjects. The diagnostic value of SAT, RBPT and ELISA for brucellosis was analyzed with exposure history + clinical symptoms + serological test/brucellosis isolation and culture as the gold standard. Results　Of the 489 suspected patients, 183 (37.42%) were diagnosed with brucellosis, while 234 (47.85%), 148 (30.27%) and 195 (39.88%) were positive by RBPT, ELISA and SAT, respectively. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of RBPT in the diagnosis of brucellosis were 95.08%, 80.39%, 74.36%, 96.47%, and 85.89%, respectively; the values of the above parameters for ELISA were 78.69%, 98.69%, 97.30%, 88.56%, and 91.21%, respectively; those values of SAT were 98.36%, 95.10%, 92.31%, 98.98%, and 96.32%, respectively. The sensitivity of RBPT was significantly higher than ELISA, but the specificity and accuracy were significantly lower than ELISA (all P<0.05). The sensitivity and accuracy of SAT diagnosis were significantly higher than ELISA, but the specificity was significantly lower than ELISA (all P<0.05). There was no significant difference between SAT and RBPT in the sensitivity of diagnosis, but the specificity and accuracy were significantly higher than those of RBPT (P<0.05). Conclusion　RBPT and SAT have high sensitivity in diagnosis of brucellosis, while ELISA has high specificity in diagnosis. RBPT with high sensitivity and convenient operation can be used for primary screening in field detection, and then the other two methods can be used for rechecking, so as to further improve the efficiency and accuracy of diagnosis of brucellosis.

Effects of main environmental factors, such as temperature, pH , metal ions and anions, on expression and activity of bacterial extracellular car bonic anhydrase(CA) were studied, exemplified by a bacterium named GLRT102Ca, wh ich was separated from karst ecosystems of Southwest China. The results showed that the tested strain could express different activity of extracellular carboni c anhydrase within the scope of experimental temperature (10℃~50℃) and pH (5. 5~9.0). The activity of extracellular carbonic anhydrase was higher at tempera ture of 20℃~30℃ and at neutral and alkaline trending condition. Moreover, the expression of activity of extracellular carbonic anhydrase could be generally p romoted at the experimental range of concentration of 4 kinds of metal ions such as Ca2+, Mg2+, Zn2+ and Co2+, along with 8 kinds of ani ons such as SO2-_4, H_2PO-_4, NO-_3, NO-_2, Cl-,Br-, I- and HCO-_3. This research provides a cert ain theoretical basis for further study on the role of microbial CA in karst pro cesses.

Objective To explore the dynamic changes and significance of heart rate variability(HRV)during the initial phase after acute exposure to Tibet plateau by combining time,frequency domain and non-linear analysis.Methods Eighty-six healthy young men of Han nationality underwent short-term(5 min)heart rate variability(HRV)monitoring at 560 meter above sea level(plain),then were transported to Tibet plateau(3675-meter above sea level)by airplane.There,all subjects were divided into 3 groups,and A gorup(n=12)underwent HRV monitoring on the 2nd day after arrival,B group(n=48)on the 3rd day,C group(n=26)on the 4th day.Results Compared with the data obtained at plain,the standard deviation of normal to normal intervals(SDNN),high frequency(HF)and total power(TP)decreased significantly(P50 ms(PNN50)and normalized high frequency(HFnu)also decreased obviously(P

OBJECTIVETo analyse clinical feasibility of two electrophoresis procedures of seminal plasma proteins, agarose gel electrophoresis and SDS-agarose gel electrophoresis.

METHODSSixty-nine semen samples were examined and classified into three groups: the asthenozoospermia (n = 22), the asthenoteratozoospermia (n = 19), and the relative normal group (n = 28) with normal routine and special test results, according to WHO routine and special test criterion. Then, the seminal plasma protenis were separated by two different electrophoresis, with SDS-agarose and agarose support medium, the buffer pH 7.0 and 9.2 respectively. The agarose gel electrophoresis was done under various sample loading time, motion power and staining modules. The completed gels were scanned and compared the each other statistically.

RESULTSSeminal plasma proteins can be separated into 4 strips by SDS-agarose gel electrophoresis with acid crystal violet, and the strips were diffusion and with dark background. However, 6 clear strips named A, B, C, D, E, and F can be obtained by agarose gel electrophoresis with 6 min. After samples were loaded and stained by amidoblack, there showed appropriate spaces among strips, and it was very easy to scan the drying gel by a densitometer. Using agarose gel electrophoresis, the statistical difference in strip C and E was shown between the asthenozoospermia and the relative normal group, and between the asthenozoospermia and the asthenoteratozoospermia, however, not between the relative normal and the asthenoteratozoospermia group. Moreover, the samples in the relative normal group with normal routine and special test results were in different electrophoresis maps.

CONCLUSIONAgarose gel electrophoresis of seminal plasma proteins with buffer pH 9.2, 6 min. sample loading and amidoblack stain was a simple, fast and fit technique for clinic.

Adult ; Electrophoresis, Agar Gel ; methods ; Electrophoresis, Polyacrylamide Gel ; methods ; Humans ; Male ; Proteins ; analysis ; Semen ; chemistry ; Staining and Labeling

In this paper, miRNAs features were briefly introduced and agreeable points were discussed from 4 aspects: organs relationship, syndrome research, Chinese medical pathogeneses, and actions of Chinese herbs. miRNAs, as information media for organs interrelation, was believed to explain Chinese medical pathogeneses and reveal partial molecular mechanisms of Chinese medicine. miRNAs in the body fluid could be taken as one of biological bases of syndromes.
Biomedical Research ; China ; Humans ; Medicine, Chinese Traditional ; trends ; MicroRNAs ; Syndrome