Objective Through studying the apoptosis induced by stichopus japonicus acid mucopoly saccharide in the hepatocellular carcinoma cell line HepG2 in vitro, analysing the expression of Bcl-2 and nm-23in HepG2, to provide the theory foundation and its feasibility on whether it can be used for the chemotherapy of hepetocellular carcinoma. Methods The cells of HepG2 were cultured in vitro and treated with SJAMP at different doses(0.25,0. 5,1.0,2.0,4.0 g/L). MTT was used to observe the inhibitory effects of SJAMP on cell growth, Western blotting was used to detect apoptosis, and the apoptosis related change of expression of protein Bcl-2 and nm23-H1. Results (1) MTT identified that SJAMP produced an obvious time-and-dose-dependent inhibitory effect on the HlepG2 cells. (2) Western blot showed that SJAMP could induce the apoptosis of HepG2 cells through changing the expression of the protein of Bcl-2 and nn23-H1 (P<0.05). Conclusion (1)SJAMP produced obvious inhibitory effects on HepG2 cells and induce HepG2 apoptosis. (2)SJAMP can enduce the anti-tumor function in the method of changing the expression of protein Bcl-2 and nm23-H1.

Objective To investigate the effect and current situation of the standardized construction of laboratories of schis?tosomiasis control institutions in Hubei Province,so as to provide the evidence for establishing and improving the quality control system of diagnosis of schistosomiasis after the transmission of schistosomiasis was under control. Methods According to the procedures of self?examination,field operation,and laboratory on?site,five laboratories were assessed,and all the results were analyzed comparatively. Results The average number of staffs were(7.00 ± 1.58)persons,and the staffs of the laboratories of the schistosomiasis control institutions with senior professional titles in the city level were more than that in the county level(t=5.563,P<0.05). The average space was(3.20±1.64)rooms,and the average area was(117.00±88.29)m2. The average score of field operation was(96.40 ± 4.49)points. The average score of laboratory on?site assessment was(106.6 ± 6.15)points. The highest and lowest of the laboratory on?site assessment scores were environment and facilities(19.60 ± 0.55)points and manage?ment system of laboratory quality control(15.70 ± 2.39)points(F=2.869,P<0.05),respectively. Conclusion The cultiva?tion of laboratory staff should be strengthened,and the diagnostic capacity should be maintained and improved. The laboratory quality control system should be paid more attention to,and the construction and management of schistosomiasis laboratories should be standardized.

tRNA-derived RNA fragments (tRFs) are an emerging class of non-coding RNAs (ncRNAs). A growing number of reports have shown that tRFs are not random degradation products but are functional ncRNAs made of specific tRNA cleavage. They play regulatory roles in several biological contexts such as cancer, innate immunity, stress responses, and neurological disorders. In this review, we summarize the biogenesis and functions of tRFs.
Organelle Biogenesis* ; Humans* ; Immunity, Innate ; Nervous System Diseases ; Neurodegenerative Diseases ; RNA* ; RNA, Transfer ; RNA, Untranslated

A 10-year-old boy presented with a 3-year history of erythematous flat keratotic papules and brown-yellow, nail-like prominent keratotic plaques all over the body surface. Dermatological examination showed verrucous or nail-like prominence over multiple erythematous keratotic plaques on the head, face,trunk and limbs. The lesions, most of which confluenced, were covered with brown-yellow and greasy crusts,and gave a porcupine-like appearance. Skin biopsy of lesions from the back revealed epidermal hyperkeratosis,focal columnar parakeratosis, acanthosis, few acantholytic and dyskeratotic cells in stratum corneum, irregular upward proliferation of dermal papilla cells, and a superficial perivascular lymphocytic infiltration. A diagnosis of ichthyosis hystrix was established based on the histopathological findings. The boy was treated with oral acitretin and topical 0.1% acitretin cream for 8 years. The initial and maximum dose of oral acitretin was 0.5 mg·kg-1·d-1 and 1 mg·kg-1·d-1, respectively. Liver and kidney function, body height and weight were examined during the treatment, and no side effect was observed except for skin xerosis.