Eupatilin inhibits the apoptosis in H9c2 cardiomyocytes via the Akt/GSK-3β pathway following hypoxia/reoxygenation injury

Eupatilin, a pharmacologically active flavone derived from the Artemisia plant species, has been reported to have anti-oxidant, anti-inflammatory, anti-allergic, and neuroprotective activities against cerebral ischemia/reperfusion (I/R). However, the role of eupatilin in myocardial I/R injury remains unclear. In the present study, we aimed to investigate the potential molecular mechanisms against hypoxia/reoxygenation (H/R) induced cardiomyocytes apoptosis in vitro. Our results showed that eupatilin markedly improved the cell viability and decreased lactate dehydrogenase (LDH) release. Eupatilin also suppressed oxidative stress and apoptosis in H9c2 cells after myocardial I/R injury. Furthermore, eupatilin obviously increased the phosphorylation of Akt and GSK-3β in H9c2 cells. Our results suggested that eupatilin could provide significant cardioprotection against myocardial I/R injury, and the potential mechanisms might involve inhibition of cardiomyocyte apoptosis through activating the Akt/GSK-3β signaling pathway.     

医患法律属性对医疗纠纷归责分析的影响

文章通过对现阶段医患关系的主流争议的介绍、医疗活动的性质及相关法律的分析，认为我国医疗纠纷的处理应根据医患双方的法律属性确定医疗纠纷的性质以及医院、医生、患者及政府部门在医疗纠纷中的责任。     

eIF-4E、p53在皮肤鳞状细胞癌中的表达及其临床意义

Objective:To study the expression of eukaryotic initiation factor-4E (eIF-4E) and p53 in squamous cell carcino-mas (SCC) and to explore their relationship and clinical significance. Methods:The expression of eIF-4E and p53 in 32 cases of SCC was detected by immunohistochemical SABC method. Results:The positive rate of eIF-4E and p53 expression was 93.8% and 56.3% in SCC, and the levels of eIF-4E and p53 were significantly higher in SCC than those in the normal skin tissue (P < 0.05). Conclusion:Both eIF-4E and p53 were useful markers in SCC, but the specialty and sensitivity of the eIF-4E protein was high in SCC.     

结直肠癌中NF-κB表达的研究

Objective: The aim of the study was to explore the protein level of NF-κB change in carcinoma and different grades of tumor cells differentiation tissue in colorectal cancer patients. Methods: This was a comparative study between normal and carcinoma tissues and in different grades of tumor cells differentiation tissue in colorectal cancer patients. Ex-pression of NF-κΒ were assessed by immunohistochemical method using rabbit polyclonal antibodies against human p65 NF-κΒ proteins. Results: There was none or...     

The expression and the clinical significance of eukaryotic translation initiation factors 4E and p53 in squamous cell carcinoma

Objective： To study the expression of eukaryotic initiation factor-4E （eIF-4E） and p53 in squamous cell carcinomas （SCC） and to explore their relationship and clinical significance. Methods： The expression of elF-4E and p53 in 32 cases of SCC was detected by immunohistochemical SABC method. Results： The positive rate of elF-4E and p53 expression was 93.8% and 56.3% in SCC, and the levels of eIF-4E and p53 were significantly higher in SCC than those in the normal skin tissue （P 〈 0.05）. Conclusion： Both elF-4E and p53 were useful markers in SCC, but the specialty and sensitivity of the eiF- 4E protein was high in SCC.     

拓扑异构酶II基因区PCR-RFLP法鉴别常见皮肤癣菌

目的:探讨拓扑异构酶II基因区PCR-RFLP法鉴别常见皮肤癣菌的可行性。方法:用真菌拓扑异构酶II基因区通用引物dPsD1、dPsD2,先后对6种34株临床常见皮肤癣菌和2株白念珠菌以及4株曲霉的DNA进行巢式PCR(nested PCR)扩增,扩增后的阳性产物分别用限制性内切酶Hinc II和Hinf I酶切,进行限制性片段长度多态性(RFLP)分析,根据结果来鉴定皮肤癣菌并在种的水平上区分这6种常见皮肤癣菌。结果:通用引物dPsD1对6种皮肤癣菌均能扩增出3 390 bp、dPsD2能扩增出2 380 bp的片段,而白念珠菌和曲霉则未见阳性扩增条带。扩增出的产物分别经Hinc II和Hinf I酶切后表现为58~1 670 bp长短不等的片段组合,根据这些特异性条带谱可以区分这6种临床常见皮肤癣菌。结论:拓扑异构酶II基因区的巢式PCR-RFLP方法,是鉴定和区分常见皮肤癣菌的有效方法。     

拓扑异构酶Ⅱ基因区PCR-RFLP法鉴别常见皮肤癣菌

目的：探讨拓扑异构酶Ⅱ基因区PCR～RFLP法鉴别常见皮肤癣菌的可行性。方法：用真菌拓扑异构酶Ⅱ基因区通用引物dPsD1、dPsD2，先后对6种34株临床常见皮肤癣菌和2株白念珠菌以及4株曲霉的DNA进行巢式PCR（nested PER）扩增，扩增后的阳性产物分别用限制性内切酶HincⅡ和HinfⅠ酶切，进行限制性片段长度多态性（RFLP）分析，根据结果来鉴定皮肤癣菌并在种的水平上区分这6种常见皮肤癣菌。结果：通用引物dPsD1对6种皮肤癣菌均能扩增出3390bp、dPsD2能扩增出2380bp的片段，而白念珠菌和曲霉则未见阳性扩增条带。扩增出的产物分别经HincⅡ和HinfⅠ酶切后表现为58—1670bp长短不等的片段组合，根据这些特异性条带谱可以区分这6种临床常见皮肤癣菌。结论：拓扑异构酶Ⅱ基因区的巢式PCR—RFLP方法，是鉴定和区分常见皮肤癣菌的有效方法。     

Activation of Complement in the Discordant Heart Xenotransplantation of Pig-to-Monkey Model and the Impact of Intrathymic Inoculation of Xenogeneic Antigen Combined With Whole-Body γ-Radiation

Objective

This study investigated changes in complement in discordant heart xenotransplantation using a pig-to-monkey model as well as the impact of intrathymic inoculation (IT) with xenogeneic antigen combined with whole-body γ-radiation (WBI).

Methods

In this experiment, pigs and monkeys selected as donors and recipients, respectively, were randomly divided into three groups: a blank group (group A), a whole-body irradiation group (group B) and an irradiation plus intrathymic injection group (group C). In every group, monkeys underwent heterotopic heart xenotransplantation.

Results

The results showed that the survival of donor hearts in group C was significantly longer than that of group A (P < .01). In mixed lymphocyte reactions, there was a significant reduction of the stimulation index in group C compared with group A. After xenotransplantation, the level of xenoreactive antibody in group C rose slower than that in group A or group B (P < .01). After rejection, the levels of CD46 and C3 declined greatly.

Conclusions

These results suggested that pretreatment with IT and WBI induced T-cell immunosuppression, restraining elicited xenoreactive antibody production of both immunoglobulin M and immunoglobulin G classes. However, it did not hinder complement activation via the classical pathway during hyperacute rejection and consequent xenograft rejection.