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Objective:To explore the necessity and feasibility of introducing the courses of dental practice management in the undergraduate education of stomatology under the background of the undergraduate entrepreneurship education reform.Methods:In the School of Stomatology of Zhejiang Chinese Medical University, the entrepreneurial course dental practice management was set-up for the junior undergraduate students. CBL, PBL, teacher's lecture, student's lecture on the stage and PPT demonstration, role-play, and team cooperation were taken in the course. And the questionnaires were used to investigate the course setting, necessity, teaching forms and satisfaction from multiple groups. SPSS was performed for data analysis, and the teaching effect was evaluated through the data results.Results:The scores of 108 students in the study [(75.99±5.76) points] were roughly distributed as normal functions. The results of the survey showed that the number of students who planned to have their own private clinics after the course increased by 41 (37.96%) compared with that before the course. All instructors and 33 (78.57%) active dentists thought that the course was reasonable in the undergraduate courses.Conclusion:It is necessary and feasible to introduce the dental practice management course in undergraduate education of stomatology, which will have a certain guiding effect on the long-term development of dentists, and is also beneficial to the reform of innovation and entrepreneurship courses in medical universities.
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The loss of dopaminergic neurons and the decreased release of dopamine neurotransmitters in the substantia nigra pars compacta are the main pathological mechanisms leading to Parkinson 's disease (PD) in clinical research. Under the combined influence of genes and environment, there are many death mechanisms of dopaminergic neurons. Current research suggests that apoptosis, necrosis and autophagic death all participate in the death of dopaminergic neurons, but these deaths are not sufficient to explain their pathological processes and mechanisms. Ferroptosis is a newly discovered iron-dependent cell death pathway characterized by increased iron load and accumulation of large amounts of lipid peroxides. These characteristics are highly consistent with the clinical molecular characteristics of the brain in PD patients. In addition, there is evidence that ferroptosis and oxytosis (observed in nerve cells 30 years ago) have a high degree of similarity in signal regulation, and they may represent the same form of programmed cell death. This review discusses the current advances of ferroptosis death pathway in PD, and briefly discusses the possibilities for ferroptosis and oxytosis as the same type of cell death. The elucidation of the death pathway and mechanism of dopaminergic neurons can provide a fundamental theoretical basis for the development of anti-PD drugs.
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Herpes simplex virus type Ⅰ(HSV-1) is a common pathogen, and human is the only natural host of it.Following a period of lytic replication in epithelial cells, HSV-1 enters axon terminals of sensory neurons and then travels via retrograde transport to the sensory ganglia where latency can be established.Upon the stimulation of some stressors, the latent virus can reactivate, leading to recurrent diseases.Therefore, to clarify the mechanism of HSV-1 latent infection and stress-induced reactivation will offer new insights into the prevention, treatment and control of HSV-1 infection.In this review, we describes the mechanisms underlying HSV-1 latent infection and stress-induced reactivation.
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BACKGROUND:Efficacy of stem cel therapy is considerably influenced by oxidative stress. Sirtuin (SIRT) family of mammals is an important deacetylation and antioxidant enzyme that can regulate endogenous antioxidant activities in stem cel s and cel cycle related signaling pathways to reduce the damage and enhance the viability of stem cel s. OBJECTIVE:To review the regulating function and mechanism of SIRT family. METHODS:A computer-based search of Web of Science, PubMed and CNKI from 1990 to 2015 was performed for relevant articles about SIRT and stem cel oxidative stress, using the key words of“SIRT, stem cel , oxidative stress, molecular mechanisms”in English and Chinese, respectively. After eliminating literatures which have poor authority or have similar contents, 55 articles were involved. RESULTS AND CONCLUSION:NAD+-dependent SIRT family is the key enzyme for deacetylation of histones and other proteins. It plays vital regulation roles in metabolism, genomic stability, DNA damage/repair, and chromatin remodeling/stress reaction. Progress in the SIRT-targeted stem cel research wil definitely provide more clues for clinical stem cel transplantation therapy.
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Parkinson’ s disease ( PD) is a common disease in central nervous system, for which an effective treatment has yet to be found. The causes of PD include genetic, environmental, aging factors, etc. There is a common factor which can lead to the degeneration of dopaminergic neurons in the substantia:mito-chondrial damage and repair. This paper has summarized the en-vironmental and genetic factors that can cause mitochondrial damage in dopaminergic neurons, and outlined several mitochon-drial repairing pathways ( such as mitophagy) in the treatment of PD. It also analyzes the research situation of utilizing natural medicine in the therapy of PD from the perspective of the mito-chondrial protection.
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Objective To explore the optimal method of treatment for radiation proctitis by keeping coloclysis with traditional Chinese medicine (TCM), including administation temperature, infusion time, dosage and catheter depth. Methods The orthogonal experimental design was adopted. Sixty-three patients with radiation proctitis were randomly divided into 9 groups, and they were under enema for 6 weeks according to different test conditions. TCM syndrome score, radiation injury effect and Karnofsky scores were set as evaluation indexes. An orthogonal design and analysis of variance were conducted for optimization. The best technical schemes for traditional Chinese herb in treating radiation proctitis were obtained. Results The obtained optimum methods are:drug temperature of (39±0.5)℃, infusion time of 30 minutes, dosage of 100 mL, catheter depth of 20 cm. Conclusion The optimal scheme of enema for the treatment of radiation proctitis is reasonable and feasible.
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Objective To study the inhibitory effects of tea flower extract(TFE) onα-glucosidase and glucose intestinal absor-ption. Methods Three different postprandial hyperglycemia models (2 g/kg glucose, 4 g/kg sucrose, and 6 g/kg starch) were used, with 8 mice in each group. Oral administration of 150 or 300 mg/kg of TFE, 6.25 mg/kg of acarbose, or water was performed on mice 1 day and 30 mins before the oral administration of 2 g/kg glucose, 4 g/kg sucrose, and 6 g/kg starch at 10 ml/kg of body weight. Blood glucose levels were analyzed chronologically to evaluate the effect of TFE. In vitro studies were also performed to study the inhibitory effects of TFE on α-glucosidase and small intestinal mucosa glycosidase. Results Neither TFE nor acarbose had significant influence in glucose-treated mice. However, there was a significant decrease in the postprandial blood glucose 20 min after sucrose administration (P<0.05), and 20 min and 40 min after starch administration (P<0.05). TFE also significantly inhibited the activities ofα-glucosidase of small intestinal mucosa, with 18.8%and 31.1%by 150 and 300 mg/kg TFE. The in vitro IC50 of TFE onα-glucosidase was 1.50 mg/ml. Conclusion TFE could effectively reduce the blood glucose level in hyperglycemic mice. Its mechanism might be related to the inhibitory effects ofα-glucosidase.
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<p><b>OBJECTIVE</b>To study the protective effect of Sarcandra glabra extract (SGE) on immune system in restrained mice.</p><p><b>METHOD</b>The male C57BL/6 mice were randomly divided into normal control group, stress control group, 125, 500 mg x kg(-1) SGE group. The spleen lymphocyte suspensions of each group were prepared. The parameters of spleen T cells subsets, NK cell and NKT cell proportion and number was detected by Flow cytometry.</p><p><b>RESULT</b>SGE regulated the balance of T cell subsets, increased the percent of NK cells and NKT cell proportion and number in restrained mice.</p><p><b>CONCLUSION</b>SGE has immunologic protective effect in restrained mice probably via the amelioration of immune cells proportion and number.</p>
Subject(s)
Animals , Male , Mice , Drugs, Chinese Herbal , Pharmacology , Killer Cells, Natural , Allergy and Immunology , Magnoliopsida , Chemistry , Mice, Inbred C57BL , Natural Killer T-Cells , Allergy and Immunology , Restraint, Physical , Stress, Psychological , Allergy and Immunology , T-Lymphocyte Subsets , Allergy and ImmunologyABSTRACT
Objective To observe the effects of Changrui Enemas on IL-1β and NF-κB in the rat model of radiation-induced proctitis, and to explore the mechanism of its repairing mucous membrane and diminishing inflammation. Methods Radiation was given on the pelvis of rats through linear accelerator to establish the model of proctitis. 70 rats were divided into seven groups randomly. Small dose (0.4 g/ml), middle dose(0.8 g/ml) and large dose(1.6 g/ml) of Changrui Enemas by retention enema were given for 7 days, with the admixture liquids of Gentamyein and Dexamethasone, Xilei Powder was used as controls. Changes of IL-1β and NF-κB expression were investigated by semi-quantitative RT-PCR and IHC respectively. Results The expression of IL-1β and NF-κB were determined in the groups accepted radiation, but there had been a dramatic decline in the treatment groups(P<0.05). The high dose treatment group was superior to the low dose one on the whole. Conclusion Changrui Enemas can down-regulate the expression of inflammatory factor IL-1β and NF-κB on radiation induced proctitis rats, and reduce the inflammatory reaction, protect the rectal mucosa, accelerate healing up of the ulcer and relief the symptoms.
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Objective To explore the effects of Shengmai Injection on tumor growth and the expression of P-gp in transplanted tumor of human gastric carcinoma of SGC7901/VCR cell in nude mice.Methods Transplanted tumor model of human gastric carcinoma of SGC7901/VCR cell in nude mice was built, which was divided randomly into five groups: normal saline control-group, 5-FU group, 5-FU + verapamil group, 5-FU +Shengmai group, Shengmai group. Nude mice growth state was observed, average weigh and inhibition rate of transplanted tumor were calculated, and the expression of P-gp was detected.Results There was significanf difference in terms of transplanted tumor weight,volume among 5-FU+Shengmai group and 5-FU group and normal saline group(P0.05); P-gp express had difference between normal saline group and shengmai group, P
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This paper reports the results of 15 cases of chronic hepatitis B treated with alpha-inter -feron (?-IFN) combined with silybum marinanum compound at a small dose (?-IFN 5000 units/day)in a long treatment course(3-6 months). The cure rate was 66.6% in the treatment group and 33.3% in the placebo group. The amount of ?-IFN in the serum of the patients was determined before and after treatment, but no ?-IFN in the serum was detected before treatment, ?-IFN elevated to 5-40 units/ml after treatment for 3-7 months. However, it would drop when the treatment was stopped. The therapeutic effect was remarkable when the amount of ?-IFN in the serum was increased. The results indicate that the anti-viral drug(IFN)combined with silyoum marinanum compound may be used to cure chronic hepatitis B.