Rat with amputation operation stress possessed a decline of NK activity and splenocyte pro-liferation to mitogen ConA.Amygdaloid nuclei lesion could antagonize the decrease of those ofcell-mediated immunity.Further results showed that serum corticosterone and methionine-enkephahn was high in stress' rats.Amugdaloid Nuclei lesion could antagonize the increase ofserum corticosterone level,but seem no dffeet on serum methionine-enkephalin level,thereforesuggesting that it is related to ratio of corticosterone to enkephalin changed by decrease of corti-costerone that amygdaloid neuclei lesion antagonized the decline of immunogical function inducedby stress.

When mature adipocytes are subjected to an in vitro dedifferentiation strategy referred to as ceiling culture, these mature adipocytes can revert to dedifferentiated fat (DFAT) cells. DFAT cells have many advantages compared with adipose-derived stem cells (ASCs) and bone marrow mesenchymal stem cells (BMSCs). For example, DFAT cells are homogeneous and could be obtained from donors regardless of their age. Furthermore, DFAT cells also have the same multi-lineage potentials and low immunogenicity as ASCs. As an excellent source of seed cells for tissue engineering and stem cell transplantation, DFAT cells have better prospects in the treatment of many clinical diseases, such as bone defects, neurological diseases, ischemic heart disease and kidney disease. It is necessary to make more intensive studies of DFAT cells. This article summarizes progresses in the immunological characteristics, differentiation ability and potential clinical applications of DFAT cells.
Adipocytes ; cytology ; Cell Dedifferentiation ; Cell Differentiation ; Cells, Cultured ; Humans ; Stem Cell Transplantation ; Tissue Engineering

It was found that pre-X region was present in five clones of hepatitis B virus (HBV) genome from 2 patients with chronic HBV infection. The open reading frame (ORF) consisted of 168 base pair (bp), and could be transslated with the X gene in frame. To investigate the activity of pre-X gene promoter, promoter DNA sequence was amplified from HBV-DNA by polymerase chain reaction (PCR), The amplified product was cloned into pCAT3 vector, The HepG2 cells were transfected by pCAT3-Pre-X-p. The CAT activity was detected by an enzyme-linked immunosorbent assay (ELISA) kit. It was found that pCAT3-Pre-X-p had higher activity of CAT, which was 3.5 fold over that of pCAT3-promoter. This result implicated that pCAT3-Pre-X-p possessed promoter activity.

To investigate the promoter activity of pre-pre-S gene, which was found in five clones of hepatitis B virus (HBV) genome from 2 patients with chronic HBV infection, promoter DNA sequence was amplified from HBV-DNA by polymerase chain reaction (PCR).The amplified product was cloned into pCAT3 reporter vector. The HepG2 cells were transfected by pCAT3-pre-pre-S-p. The CAT activity was detected by an enzyme-linked immunosorbent assay (ELISA) kit. It was found that pCAT3-pre-pre-S-p had higher activity of CAT which was 10 fold over that of pCAT3-basic. This result implicated that pCAT3-pre-pre-S-p had promoter activity.

Objective To screen and clone the target genes transactivated by nonstructural protein 5A (NS5A) of hepatitis C virus (HCV). Methods The mRNA was isolated from HepG2 cells transfected with pcDNA3.1(-)-NS5A and pcDNA3.1(-) empty vector, respectively. Suppression subtractive hybridization (SSH) method was employed to analyze the differentially expressed DNA sequence between the two groups. The obtained sequences were searched for homologous DNA sequence from GenBank. The new gene with no homology with known genes in this database was confirmed, and electric polymerase chain reaction was conducted for cloning the full-length DNA of the new gene and in conjunction with Kozak rule and the terminus of polyadenyl signal sequence. The reverse transcription PCR (RT-PCR) was used to amplify the new gene from mRNA of HepG2 cell as the template. The coding sequence of the new gene was deduced according to the nucleotide sequence. Results A new gene with unknown function was named as NS5ATP3. The nucleotide sequence of the NS5ATP3 gene and its corresponding amino acid have been determined, which contained 1 572nt and 524aa. The sequence of the NS5ATP3 gene was deposited into GenBank, with the accession number AF529364. Conclusions NS5ATP3 gene transactivated by HCV NS5A protein was cloned and identified successfully by combining molecular biological technology and bioinformatics technique. These results will pave the way for the study of the molecular mechanism of the transactivating effects of HCV NA5A protein and the development of new therapy for chronic hepatitis C.

Objective To investigate the activating effect of HBV X protein on transcription of calgizzarin S100A11 gene promoter. Methods The sequence of calgizzarin S100A11 gene promoter was identified in GenBank by bioinformatics and amplified from HepG2 genome by polymerase chain reaction (PCR). The amplified product was cloned into pCAT3 reporter vector. The HepG2 cells were transfected by pCAT3-S100-p, and then co-tranfected by pCAT3-S100-p and pcDNA3.1(-)-X. The choloraphenical acetyltransferase(CAT) activity was detected by enzyme-linked immunosorbent assay(ELISA) kit. Results It was shown that pCAT3-S100-p could regulate the expression of CAT in HepG2 cells. The expression of CAT in co-transfection of pCAT3-S100-p and pcDNA3.1(-)-X was 2.1 fold higher than pCAT3-S100-p plasmid. Conclusion HBV-X protein can trans-activate the expression of S100A11 protein, and it further proved our previous results by SSH and biochips.

To investigate different effects of fiscal health expenditure, household spending on health and social health expenditure on narrowing the gap between urban and rural health resource allocation. Methods: With the relevant data of China’ s medical and health through 1985-2011 years, taking methodology of the state space model to estimate the varying-time elasticity of different types of expenditures on urban and rural health resource allocation gap. Results: For narrowing the gap, household health expenditure played the leading role, fiscal health expenditure played smaller role and the social health expenditure played the supplementary role; the elastic of different health expenditure proportion was fluctuated before 2002, which became stable after 2002; it is easy to improve the “hard conditions” rather than the “soft conditions” . Conclusion: To accelerate the process of urban and rural medical security system integration, it is inevitable to establish an efficient configuration mechanism for urban and rural health expense, balanced develop urban and rural medical insurance system and scientifically guide social health investment.

The assurance mode from laser source for medicine is brought forward based on the three-tier mode of the whole assurance system in equipment of scientific research that is in the measurement of quality control personnel, engineering technique personnel and operator. The successful implementation of model will do laboratory equipment for the conditions of security work to a new level in our academy that can play important protection effect in overall research tasks.

Genetic Therapy ; Humans ; Liver Neoplasms

Polycystic ovary syndrome (PCOS) is a common syndrome in adolescent women and women of reproductive age. Main manifestations are oligomenorrhea, anovulation, polycystic ovarian, and hyperandrogenism with metabolic abnormalities such as dyslipidemia, insulin resistance, and glucose intolerance. PCOS can lead to type 2 diabetes mellitus, cardiovascular diseases, and endometrial cancer, which seriously threat the health of women. The pathogenesis of PCOS is not clear. Over 60% of women with PCOS are obese or overweight. Appetite and energy intake regulation plays an important role in body weight management. Nutrients are mainly digested and absorbed in gastrointestinal track, which is also one of the largest endocrine organs in human body. Special endocrine epithelial cells in stomach, proximal small intestine, and distal small intestine can secrete ghrelin, CCK, GLP-1, and PYY, which involve in the regulation of appetite and are also known as appetite regulating hormones. This review focuses on changes in the secretion of gastrointestinal hormones and related weight loss treatment in patients with PCOS.