Allergens ; immunology ; Child ; Cross Reactions ; Humans ; Hypersensitivity ; immunology ; Latex Hypersensitivity ; immunology

Objective: To investigate the characteristics of peripheral circulating lymphocyte subsets in severe hepatitis patients with chronic HBV infection (SHPCHI). Methods: The numbers of circulating lymphocyte subsets, including CD3+, CD4+ and CD8+, NK cells (CD3- /CD16+ /CD56+), and NKT cells (CD3+ /CD16+ CD56+), were determined in SHPCHI (n=61),patients with chronic hepatitis B (CHB, n=21), patients with cirrhosis (LC, n=26) and healthy volunteers (n=10) by flow cytometry. The absolute values of each lymphocyte subset were calculated and statistically analyzed. Results: The absolute numbers of circulating CD3+, CD4+ and CD8+ T cells were significantly reduced in SHPCHI group compared with those in the other 3 groups (P<0.01 or P<0.05). There was a decreasing trend in the absolute numbers of peripheral CD3+, CD4+, CD8+ and NK cells in non-surviving SHPCHI compared with surviving SHPCHI,but the decrease was not statistically significant. Conclusion: SHPCHI has an disorderd cellular immune function, which might be related to the prognosis of SHPCHI.

Objective To study the influence of HBV replication regulator,enhancer I and Pre- S2,on the immune response of HBV DNA vaccine.Methods DNA fragments of HBsAg,PreS2 HBsAg,HBsAg-enhancer I and PreS2-HBsAg-enhancer I region of HBV were amplified by PCR using the complete genome DNA of HBV adr subtype,and inserted into VR1012 vectors,respective- ly.The recombinant plasmids were transfected into HepG2 cells,and injected into Balb/C mice.The expression of HepG2 cells and the cellular and humoral immune response of mice were tested by cell immuno-chemistry,ELISA and ELISPOT.Results The target protein were expressed by transfected HepG2 cells,enhancer I and Pre-S2 can promote the expression of HBsAg in transfected cells.The HBsAb and the HBsAg specific CTL in inoculated mice were found in the second week after injection, PreS2 but not enhancer I can promote the immune response in inoculated mice.Conclusions When inserted into HBV DNA vaccine,enhancer I and PreS2 can promote the expression of HBsAg in transfected HepG2 cells,PreS2 can promote the immune response in inoculated Balb/C mice.

12E7 Antigen ; Aged ; Antigens, CD ; metabolism ; Carcinoma, Transitional Cell ; pathology ; Carcinosarcoma ; pathology ; Cell Adhesion Molecules ; metabolism ; Cystectomy ; methods ; Diagnosis, Differential ; Follow-Up Studies ; Humans ; Male ; Nephrectomy ; Osteosarcoma ; metabolism ; pathology ; surgery ; Ureter ; surgery ; Ureteral Neoplasms ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

As the number of patients with compromised immune function increases and fungal resistance develops, so does the risk of contracting deadly fungi in humans. Both fungi and humans are eukaryotes, so identifying unique targets for antifungal drug development is difficult. In addition, the existing antifungal drugs are limited by toxicity, drug interaction and drug resistance in practical application, which leads to the increasing incidence and fatal rate of fungal infections. Therefore, it is urgent to develop new antifungal drugs. The semi-synthetic technology using microbial fermentation products from natural sources as lead compounds has become the most used method in structural modification of antifungal drugs due to its advantages of few reaction steps and easy operation. This paper will introduce the current status of natural antifungal drugs in clinical use, as well as the latest progress in the research and development of new semi-synthetic antifungal drugs, and summarize their mechanism of action, structural modifications, advantages and disadvantages, so as to provide reference for the subsequent development of new antifungal drugs.

Adenomatoid Tumor ; metabolism ; pathology ; surgery ; Adult ; Biomarkers, Tumor ; metabolism ; Female ; Humans ; Hysterectomy ; methods ; Keratins ; metabolism ; Lymphangioma ; pathology ; Uterine Neoplasms ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

Humans ; Liver Failure ; therapy ; Liver, Artificial

Antibodies, Bacterial ; blood ; Antigens, Bacterial ; biosynthesis ; Bacterial Proteins ; biosynthesis ; Carrier Proteins ; biosynthesis ; Gastritis ; microbiology ; Helicobacter Infections ; immunology ; Helicobacter pylori ; immunology ; isolation & purification ; Humans ; Recombinant Proteins ; biosynthesis

Objective:To clone and express the Staphylococcus aureus Efb(extracellular fibrinogen-binding protein) protein in Escherichia coli, to purify the expression product and prepare its functional antibody and to detect the functions of Efb protein for further studies on S.aureus infection.Methods: Efb gene was amplified by PCR using S.aureus NCTC-8325 genome DNA as template and cloned into the recombinant expression vectors pET28a. E.coli BL21(DE3) with the plasmid was induced with IPTG for protein production. The protein was purified by Ni~(2+) affinity chromatography. The function of Efb protein was determined by complement activity assay and inhibition ELISA.The polyclonal antibodies were prepared by immunizing the animals. Results: The purified recombinant Efb was obtained, which could inhibit the CH50 and AH50 effectively. The functional poly-antibodies of Efb were prepared.Conclusion:Efb could inhibit the classical pathway and alternative pathway of complement activation, and the antibodies against to Efb could block the inhibition of the classical pathway of complement activation induced by Efb.