Acupuncture Therapy ; Child, Preschool ; Diarrhea, Infantile ; therapy ; Female ; Humans ; Infant ; Male

Objective To observe whether the increase of oxidative stress in PC12 cells could influence the levels of protein carbonyls and nitrotyrosine and alter the cytoskeleton and cell morphology under clinostat condition,and whether the increase of content of nitrate/nitrite in cell culture medium could influence the cell proliferation and differentiation.Method Cell morphology,carbonylated actin and nitrotyrosinated tubulin,and mRNA and protein express of nNOS and iNOS were observed and determined with immunofluorescence and RT-PCR technology in clinostat rotated and control static groups.At the same time,cell density was measured and cell cycles were detected with flow cytometry.The relationship between all these changes and NOS were also analyzed.Result The levels of carbonylated and nitrotyrosinated cytoskeleton protein were altered,no obvious changes in cell morphology but neurite outgrowth after on a clinostat rotation.Cell density also increased significantly,DNA synthesis in cell cycles was shortened.Conclusion All of these results indicate that simulated weightlessness do not alter cell morphology and is beneficial to the growth of PC12 cells.The mechanism involved may be associated with the increase of NOS activity.

Objective To investigate the long-term excessive drinking semen nitric oxide (NO) content in their sperm quality and spermatogenic cell apoptosis and infertility. Methods Nitrate reductase method was used to specific reduce the NO metabolites nitrate (NO3-) to nitrite (NO2-), which was used on behalf of the total NO level. Terminal deoxynucleotidyl transferase (TdT) and mediated nick end labeling (TUNEL) method and binocular optical microscope were used to detect and observe the rate of apoptosis of spermatogenic cells and the morphological structure. The SQA-V sperm quality automatic analyzer was used to measure sperm quality. Results In not drinking semen fertility group, NO content was (54.81±11.45)μmol / L, the rate of spermatogenic cell apoptosis was (4.52±1.23)%, sperm motility was (80.24±0.17)%, energy a+b (78.32±0.12)%, deformity rate (5.30±0.13)%, and long-term excessive alcohol infertility C group was [(128.83±22.73)μmol/L,(17.34±2.53)%,(51.18±0.58)%,(21.45±0.26)%,(21.12±3.24)%] respectively. Compared to a very significant difference (t＝10.04,17.38,6.69,15.59,17.02,P＜0.01) . In long-term excessive drinking group, the levels of NO and spermatogenesis cell apoptosis rate was significantly positive correlated (r＝0.93,P＜0.01).Apoptosis of spermatogenic cell nucleus chromatin was condensed in the formation of crescent-shaped perinuclear, nuclear was cleavaged to form apoptotic bodies. Conclusions In the long-term excessive drinking semen, NO content and spermatogenic cell apoptosis rate was increased, the sperm had poor quality. The results showed that the long-term excessive drinking can cause germ cell apoptosis in male infertility and promote the body to overproduce NO, whichmay be one of the reasons for male infertility.

OBJECTIVETo make full use of the plant resources of Panax notoginseng, nutritional compositions and mineral elements were analyzed in aerial part of P. notoginseng from different areas in Yunnan.

METHODUsing the national standard method, water, ash, crude fat, crude fiber, crude protein and mineral elements were determined in aerial part of P. notoginseng from different growing areas.

RESULTResults showed that there were higher contents of crude fiber and crude protein, and lower content of crude fat in the stems and flowers of P. notoginseng. Meanwhile, a large number of mineral elements were determined in two locations of P. notoginseng, and the contents of Zn, Fe, Mn, Ca and Mg were obvious higher among these mineral elements.

CONCLUSIONThis study showed that the stems and flowers of P. notoginseng were nutritious and suggested that the aerial part may be utilized as new resources foods.

Flowers ; chemistry ; Nutritive Value ; Panax notoginseng ; chemistry ; Plant Extracts ; analysis ; Plant Leaves ; chemistry ; Plant Stems ; chemistry ; Trace Elements ; analysis

Objective To explore the effects of PDCA-based self-management intervention model on health behavior and medication adherence in aged patients with percutaneous coronary intervention (PCI). Methods Totally 130 aged patients treated by PCI were randomly divided into the intervention group and the control group with 65 patients. The patients in the control group received routine health education, and the patients in the intervention group received PDCA-based self-management intervention model. All patients were investigated with Coronary Heart Disease Self-Management Behavior Scale (CSMS) and Health Promoting Lifestyle Profile (HPLP) and Medication Compliance Scale (MMAS-8) 3 months and 6 months after discharge. Results Six months after discharge, the score of self-management and healthy behavior and medication adherence were 96.98 ± 14.12, 131.86 ± 16.53, 7.18 ± 0.69 respectively in the intervention group, and the score of them were 86.04 ± 11.78, 105.33 ± 10.97, 5.69 ± 1.29 respectively in the control group, and the difference was statistically significant (t=10.981, 10.793, 7.438, P<0.05 or 0.01). Conclusions PDCA-based self-management intervention model is a patient-centered, problem-oriented, dynamic and interactive health education intervention. It may be helpful in improving PCI patients′ health behavior and medication adherence after discharge. And it may establish lasting self-management skills, and is worthy of application and promotion.

Objective This study aimed to survey students' satisfaction and cognitive attitude of elaborate course of social medicine to provide a basis for exploring appropriate teaching mode. Methods Purposive sampling was used with questionnaire to survey 646 students who had learned social medicine in 5 universities in Guangdong province. The survey included the social medicine curriculum, teaching situation, students' satisfaction and cognitive attitude of elaborate course of so-cial medicine. Descriptive statistical analysis was used to describe the demographic characteristics and curriculum. The t test and one-way ANOVA were used to compare the means of students' satisfaction and cognitive attitude of elaborate course in different universities, using the test level of 0.05. Results The lecture-based learning was the main teaching mode. 335(52.7%) students thought it necessary to learn social medicine, but only 27.2%of the students(173 students) were interested in social medicine and 65(10.2%) students could take the initiative to read about extracurricular books. Overall satisfac-tion with using network resources of elaborate course in two universities that had university-level elab-orate course of social medicine were (2.78 ± 0.55) and (3.01 ± 0.30) respectively and the difference was statistically significant(t=-3.97,P<0.01). The cognitive attitude of the students in 5 universities with using network resources of elaborate course was (3.09±0.66) and the difference was statistically significant(F=3.70,P<0.01). Conclusion Social medicine teaching has been paid attention to in 5 universities, but there were some common problems: ①putting emphasis on theory and ignoring prac-tice in teaching mode; ②putting emphasis on credit and ignoring effectiveness in learning; ③and putting emphasis on construction and ignoring using in network resources of elaborate course of social medicine.

Soxhlet extraction is a common method of sample preparation. However, there has been no discussion about the efficiency of Soxhlet extraction from different batches and the factors that cause content fluctuation. In this study, Panax ginseng was selected as a model sample. Soxhlet extraction by means of a water bath, which has always been neglected, was identified as a novel key factor in the poor repeat-ability in different batches of Soxhlet extraction, as it can affect the siphon times and reflux time, which have been positively correlated with the ginsenoside contents. By substituting round bottom flasks in the same column, the relative standard deviation of the most fluctuated compound, ginsenoside Rb1, was decreased from 24.6% to 5.02%. Scanning electron microscopy analysis confirmed that the breakdown of the surface of the ginseng powder in the Soxhlet extraction led to a better dissolution of ginsenosides, indicating that chloroform may promote the extraction of ginsenosides by disrupting the cell structure. Moreover, 70% methanol was regarded as the better solvent for extracting the ginsenosides. Overall, this work offers a practical and effective protocol for improving the accuracy and repeatability of Soxhlet extraction methodology for ginsenosides and other analytes.

BACKGROUNDSeveral studies suggest that cyclooxygenase-2 (COX-2) contributes to the delayed progression of ischemic brain damage. This study was designed to investigate whether COX-2 inhibition with parecoxib reduces focal cerebral ischemia/reperfusion injury in rats.

METHODSNinety male Sprague-Dawley rats were randomly assigned to three groups: the sham group, ischemia/reperfusion (I/R) group and parecoxib group. The parecoxib group received 4 mg/kg of parecoxib intravenously via the vena dorsalis penis 15 minutes before ischemia and again at 12 hours after ischemia. The neurological deficit scores (NDSs) were evaluated at 24 and 72 hours after reperfusion. The rats then were euthanized. Brains were removed and processed for hematoxylin and eosin staining, Nissl staining, and measurements of high mobility group Box 1 protein (HMGB1) and tumor necrosis factor-α (TNF-α) levels. Infarct volume was assessed with 2,3,5-triphenyltetrazolium chloride (TTC) staining.

RESULTSThe rats in the I/R group had lower NDSs (P < 0.05), larger infarct volume (P < 0.05), lower HMGB1 levels (P < 0.05), and higher TNF-α levels (P < 0.05) compared with those in the sham group. Parecoxib administration significantly improved NDSs, reduced infarct volume, and decreased HMGB1 and TNF-α levels (P < 0.05).

CONCLUSIONSPretreatment with intravenous parecoxib was neuroprotective. Its effects may be associated with the attenuation of inflammatory reaction and the inhibition of inflammatory mediators.

Animals ; Blotting, Western ; Brain Ischemia ; drug therapy ; metabolism ; prevention & control ; Injections, Intravenous ; Isoxazoles ; administration & dosage ; therapeutic use ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; drug therapy ; metabolism ; prevention & control

OBJECTIVETo observe the protective effect of Acanthopanax senticosus saponins (ASS) on myocardial ischemia-reperfusion injury in rats.

METHODThe myocardial ischemia-reperfusion model was induced by 30 min left anterior descending coronary occlusion and 120 min reperfusion in rats. The changes of myocardial infarct size (MIS), the serum creatine phosphokinase (CK) and lactate dehydrogenase (LDH) activity, the serum lipid peroxidation (LPO) content and superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activity and plasma endothelin (ET), angiotensin II (Ang II), prostacycline (PGI2) and thromboxane A2 (TXA2) levels and myocardial free fatty acid (FFA) content of infarct and noninfarct area were determined.

RESULTIn rats treated by ASS (in a dosage of 25, 50 and 100 mg x kg(-1) i.v. at 30 min after coronary occulusion), the MIS was significantly reduced, the serum CK and LDH activity, the plasma ET, Ang II and TXA2 level and myocardial FFA content declined, while plasma PGI2 level and PGI2/TXA2 was increased signficantly. In addition, serum LPO content declined, SOD and GSH-Px activity were increased markedly.

CONCLUSIONASS has protective effect on myocardial ischemia-reperfusion injury, which may be due to its function of improving free radicals and myocardial metabolism, decreasing plasma ET, Ang II and TXA2 levels and increasing plasma PGI2 level and PGI2/TXA2 ratio etc.

Animals ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Eleutherococcus ; chemistry ; Female ; Male ; Myocardial Reperfusion Injury ; metabolism ; pathology ; Myocardium ; metabolism ; pathology ; Plant Leaves ; chemistry ; Plants, Medicinal ; chemistry ; Rats ; Rats, Wistar ; Saponins ; isolation & purification ; pharmacology

OBJECTIVETo investigate the inhibitory and apoptosis-inducing effects of saponins from Tribulus terrestris (STT) on liver cancer cell line BEL-7402.

METHODMTT, SRB, Wright staining, acridine orange staining, flow cytometry, and Immunofluorescence microscopy were used to evaluate the effects of STT on BEL-7402 cell line.

RESULTSMT had potent inhibitory effect on BEL-7402 cell line in a concentration-dependent manner. BEL-7402 cells exibited typical morphological alteration of apoptosis when sub-G1 peak could be seen. The expression of Bcl-2 was decreased in STT treated cells as compared with untreated control cells.

CONCLUSIONSTT exerts its cytotoxic effect on BEL-7402 cells by inducing apoptosis.

Apoptosis ; drug effects ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Humans ; Liver Neoplasms ; metabolism ; pathology ; Plants, Medicinal ; chemistry ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Saponins ; isolation & purification ; pharmacology ; Tribulus ; chemistry