Innovation and Practice of Biochemistry Course Teaching under the Background of "Golden Course" / 中国生物化学与分子生物学报

There are a series of deficiencies in traditional courses teaching, such as outdated teaching ideas and objectives, insufficient teaching ability and resources, low degree of information technology integration, limited space and time in classroom and knowledge in textbooks, and ignoring the cultivation of students' ideological and political literacy and comprehensive ability. Our biochemistry teaching team promoted an all-round curriculum reform from the aspects of the teaching concept and goal, charm and ability, platform and resource, knowledge system, teaching time and space, teaching mode, ideological and political education, and achievement evaluation system. By establishing " all-around cultivation, student-centered, outcome-based, open & sharing" teaching ideas, improving team charm and ability, enriching high quality of curriculum platform and resources, building a new ideological and political cultivation model of "teaching + research h+ practice", a new "3+X" compound knowledge system, a new teaching model integrated ideological and political cultivation, a multi-dimensional processing evaluation system, the course of biochemistry highlights the typical characteristics of "first-class course", which are high-level, innovation and challenge. Our course has been recognized as a national first-class course and provincial model course of ideological and political cultivation. As a result, students' ideological and political literacy, course performance and comprehensive ability improved significantly. The reform and innovation of curriculum teaching have realized the organic synergy of value shaping, knowledge imparting and ability training.

Effect of lupeol on invasion and metastasis of human hepatoma HepG2 and SK-HEP-1 cells and its mechanism / 中国中药杂志

Epithelial-mesenchymal transformation(EMT) exists in embryonic development and is closely related to cell migration and invasion. The increased EMT level in tumors showed that E-cadherin was replaced by N-cadherin, and the expression of interstitial markers such as α-SMA and vimentin was up-regulated. It has been reported that lupeol can reduce the expression of matrix metalloproteinase-2(MMP-2), matrix metalloproteinase-9(MMP-9) and N-cadherin to inhibit the metastasis of osteoma cells. However lupeol has been less studied in liver cancer. Therefore, this paper investigated the effect of lupanol on invasion and metastasis of human hepatoma cell line HepG2 and SK-HEP-1 and its possible mechanism. MTT assay and Annexin V/PI double staining were used to investigate the effect of lupeol on activity and apoptosis of HepG2 cells and SK-HEP-1 cells. Moreover, the effect of lupeol on the invasion of HepG2 cells and SK-HEP-1 cells were evaluated by Transwell assay. The expressions of E-cadherin, N-cadherin, α-SMA, vimentin and MMP-9 were measured by Western blot. The model of subcutaneous transplantation of nude mice and the lung metastasis model of H22 hepatocellular carcinoma cells were established to evaluate the efficacy of lupeol in vivo on tumor growth and lung metastasis by HE staining combined with immunohistochemical assay. The results showed that lupeol inhibited the activity and invasion of HepG2 cells and SK-HEP-1 cells in a dose-dependent manner and induced apoptosis. Western blot showed that the expression of E-cadherin, a landmark protein for EMT, was induced by lupeol, and the expressions of N-cadherin, α-SMA, vimentin and MMP-9 were decreased. In vivo experiments showed that lupeol inhibited tumor growth in mice bearing xenograft. In addition, immunohistochemical experiments confirmed that lupeol could up-regulate the expression of E-cadherin in tumor tissues of nude mice, reduce the expression of N-cadherin, and inhibit the metastasis of liver cancer H22 cells in the lungs of mice. The above results indicated that the mechanism of lupeol inhibiting the invasion and metastasis of HCC cells may be related to the regulation of EMT process.

Recurrent fungal endocarditis: one case report and literature review / 中国感染控制杂志

A 56-year-old female patient was admitted to a hospital because of repeated fatigue, anorexia, fever for more than one year, recurrence for 2 months and sudden left limb twitch for 10 days. In 2017, patient was diagnosed with infective endocarditis, then underwent aortic valve replacement, valve biopsy showed Candida parapsilosis, she took medicine regularly after operation and withdrew medicine after three consecutive negative blood culture. Fever and multiple organ infarction occurred again in 2018, Candida parapsilosis was isolated again from blood culture, it is suggested that fungal endocarditis may be latent and recurrence in human body for a long time, exfoliation of vegetation may embolize various organs and lead to corresponding clinical manifestations, surgery combined with drug therapy and subsequent maintenance of antifungal therapy are extremely important to improve the prognosis of patients.

Research and application of hepatotoxicity evaluation technique of traditional Chinese medicine / 中国中药杂志

The safety of traditional Chinese medicine (TCM) has received the widespread attention in recent years. Hepatotoxicity of TCM is one of the key problems of the safety of TCM. This article summarized research progress and application prospect in the mechanism of TCM hepatotoxicity, biomarkers, toxic omics database, prevention of hepatotoxicity of the liver cell lines, subcellular fraction, three-dimensional cultivation models, the model animals, aiming to provide theoretical basis for TCM toxicity evaluation and technical guidelines, thus promoting the development of TCM toxicity studies. Hope for Chinese medicine liver toxicity evaluation method provides the theoretical foundation and technical guidelines, promote the development and improvement of TCM liver toxicity research system.

Research progress on potential liver toxic components in traditional Chinese medicine / 中国中药杂志

In recent years, the proportion of traditional Chinese medicine in scientific research and its clinical use increased gradually. The research result also becomes more and more valuable, but in the process of using traditional Chinese medicine, it also needs to pay more attention. With the gradual deepening of the toxicity of traditional Chinese medicine, some traditional Chinese medicines have also been found to have the potential toxicity, with the exception of some traditional toxicity Chinese medicine. Traditional Chinese medicine in the growth, processing, processing, transportation and other aspects of pollution or deterioration will also cause the side effects to the body. Clinical practice should be based on the theory of traditional Chinese medicine to guide rational drug use and follow the symptomatic medication, the principle of proper compatibility. The constitution of the patients are different, except for a few varieties of traditional Chinese medicines are natural herbs with hepatotoxicity, liver toxicity of most of the traditional Chinese medicine has idiosyncratic features. The liver plays an important role in drug metabolism. It is easy to be damaged by drugs. Therefore, the study of traditional Chinese medicine potential liver toxicity and its toxic components has become one of the basic areas of traditional Chinese medicine research. Based on the review of the literatures, this paper summarizes the clinical classification of liver toxicity, the pathogenesis of target cell injury, and systematically summarizes the mechanism of liver toxicity and toxic mechanism of traditional Chinese medicine. This paper provided ideas for the study of potential liver toxicity of traditional Chinese medicine and protection for clinical safety of traditional Chinese medicine.

Factors influencing the clinical pregnancy rate following intrauterine insemination / 中华男科学杂志

<p><b>OBJECTIVE</b>To investigate the factors that affect the clinical pregnancy rate after intrauterine insemination (IUI).</p><p><b>METHODS</b>We retrospectively analyzed the clinical data of 611 IUI cycles and analyzed the relationship of the clinical pregnancy rate after IUI with the female age, infertility duration, type of infertility, cycle number, cycle protocol, thickness and type of endometrium, and semen parameters before processing.</p><p><b>RESULTS</b>The clinical pregnancy rate was significantly higher in the ovulation induction than in the natural ovulation cycles (23.03% vs 11.03%, P < 0.01), but lower in the 4th cycle and above than in the 1st, 2nd, and 3rd cycles (2.04% vs 21.30%, 18.13%, and 12.67%, P < 0.01). Marked decreases were found in the clinical pregnancy rate in the females aged ≥ 40 years and the cases with pre-processing total progressively motile sperm count (TPMSC) < 10 x 10(6), progressive motile sperm < 20%, or morphologically normal sperm < 2% (all P < 0.05). Logistic regression analysis revealed the cycle protocol, cycle number, and percentage of progressively motile sperm as three predictive variables affecting the clinical pregnancy rate after IUI (P < 0.05).</p><p><b>CONCLUSION</b>The cycle protocol, cycle number, percentage of progressively motile sperm, female age, TPMSC, and sperm morphology are the main factors affecting the clinical pregnancy rate following IUI, while infertility duration, type of infertility, and thickness and type of endometrium exert little influence.</p>

Intraperitoneal injection via a paravertebral approach in rabbits / 南方医科大学学报

<p><b>OBJECTIVE</b>To explore a simple and reliable method for intraperitoneal injection through a paravertebral approach in rabbits.</p><p><b>METHODS</b>Sixty New Zealand rabbits were randomized into conventional group and modified groups to receive intraperitoneal injections through conventional and paravertebral approaches, respectively. In the conventional group, the injection site was on the abdominal wall 3~4 cm lateral from the umbilicus bilaterally, while that in the modified group was located dorsally at L5/L6 level 3-4 cm lateral from the midline. Abdominal CT scan was performed in the post-injection rabbits, which were sacrificed after 24 h for abdominal dissection.</p><p><b>RESULTS</b>Success with a single puncture was achieved in 13 out of the 20 rabbits in the conventional group, and the rest required at least two punctures, with a mean rank sum of 23.50. With the modified approach, a single attempt was successful in all the 40 rabbits, with a mean rank sum of 34.0, showing a significant difference between the two groups (P<0.01). The success rates of a single injection differed significantly between the two groups (P<0.01). CT scan and abdominal dissection showed that the injection site with the modified approach was far away from the vital organs and large vessels with less peritoneal hyperemia and exudation.</p><p><b>CONCLUSION</b>Paravertebral intraperitoneal paracentesis is a convenient and reliable method for intraperitoneal injection in rabbits.</p>

Pathological study of cerebral amyloid angiopathy in rat models of Alzheimer's disease / 南方医科大学学报

<p><b>OBJECTIVE</b>To examine cerebral pathologies in cerebral amyloid angiopathy in a rat model of Alzheimer's disease.</p><p><b>METHODS</b>Rat models of Alzheimer's disease was established by stereotactic Aβ1-42 fiber injection in the bilateral hippocampus. The cognitive function of the rats was evaluated with water maze test. HE staining, Congo red staining and double-labeling indirect immunofluorescence were used to examine the dynamic distribution of Aβ fiber deposit in the brain.</p><p><b>RESULTS</b>The model rats showed significant differences from the control rats in the escape latency and the times of crossing platform in waster maze test. HE staining revealed a decreased number and degeneration of the granular cells with increased glial cells in the model rats. Congo Red staining showed that the Aβ fiber was deposited gradually in the small vessels in the brain parenchyma to cause thickening, stenosis or occlusion of the small vessels. Immunofluorescence staining detected Aβ fiber migration from the parenchyma to the walls of the small arteries in the rat models.</p><p><b>CONCLUSION</b>Cerebral amyloid angiopathy is a major pathological feature in Alzheimer's disease.</p>

Effects of Goutengsan on model of Alzheimer dementia in rats by AlCl3 / 中国中药杂志

<p><b>OBJECTIVE</b>Observe the effects of Goutengsan on SOD, MAO-B, GSH-PX, NO, LDH, index of brain, rate of death and so on in rats to study therapeutic effects and mechanism of Goutengsan on Alzheimer dementia (AD) model.</p><p><b>METHOD</b>One hundred and twenty rats were randomly divided into 6 groups, 3 experimental groups of which were daily administrated with Goutengsan extract whereas the model and control groups were given NS (0.01 mL x g(-1)). Aniracetam at 0.1 g x kg(-1) served as a positive control. At the 5th day after administration, all groups except the control were administrated (ip) with AlCl3 (100 mg x kg(-1) ) for successive 50 days at 1 day interval. After administration, the death rate, body weight, training scores, brain index, MAO-B, SOD, GSH-Px in brain and NO, LDH in serum were determined.</p><p><b>RESULT</b>The brain index, SOD, GSH-Px activities as well as NO content of drug-treated groups were strikingly higher that of model group, and had not obvious difference from that of normal group except content of LDH was higher.</p><p><b>CONCLUSION</b>Goutengsan could increase the brain index, cut down the rate of death, stable increase of body weight, promote the endogenous antioxidant activity, enhance the clearance of lipid peroxide and other metabolic waste, inhibit the MAO-B activity, reduced the leakage of LDH and maintain the content of NO at a normal level. Therefore Goutengsan could protect cells, delay senile, improve symptoms of AD.</p>

Effect of Bacillus Calmette-Guerin Intervention on Activation and Apoptosis of T Lymphocyte in Asthmatic Mouse / 实用儿科临床杂志

Objective To explore the effect of bacillus calmette-guerin (BCG)intervention on expression of costimulatory molecules of B7-CD28/CD152 and T lymphocyte apoptosis in asthmatic mouse.Methods Twenty-seven mice were randomly divided into:asthma model group,BCG treatment group and normal control group.The mice were sensitized by ovalbumin(OVA) and 100 g/L Al(OH)3 with intraperitoneal injection,challenged with atomization inhalation,then reproduced the asthmatic models.The BCG treatment group were treated with BCG(0.025 mg,merely) subcutaneous injection 3 times before sensitization(5,3,1 day).The normal control group were treated with 9 g/L saline water taking place of OVA and Al(OH)3.CD28,CD152,CD80 and CD86 were analyzed by flow cytometry in splenic lymphocyte suspension.T lymphocyte was cultivated from peripheral blood mononuclear cell.The apoptosis ratio of T lymphocyte was counted by Comet Assay.SPSS 10.0 software was applied to analyze data.Results Contrasting asthma model group with normal control group,CD28 was up regulated(t=3.94 P0.05),CD86 was up regulated(t=2.68 P0.05).Contrasting BCG treatment group with asthma model group,T lymphocyte apoptosis rate was higher(t=3.15 P