Nanostructures ; adverse effects ; toxicity ; Nanotechnology ; Safety

Animals ; Humans ; Occupational Exposure ; adverse effects ; Streptococcal Infections ; epidemiology ; etiology ; pathology ; prevention & control ; Streptococcus suis ; immunology ; physiology ; Vaccination

Female ; Heart Defects, Congenital ; surgery ; Heart Septal Defects, Ventricular ; surgery ; Humans ; Male ; Pulmonary Artery ; abnormalities ; Pulmonary Atresia ; surgery

Hedgehog signaling pathway is excessive activated in breast cancer.LKBl is currently accepted as a tumor-suppressor gene,which can inhibit the proliferation of breast cancer.The overexpression of LKB1 can regulate the expression of CyclinDl series gene which is a target gene of Hedgehog signaling pathway.Meanwhile,the study found that PKA gene play an important role in Hedgehog signaling pathway,its activation is related with the cAMP state,and LKB1 genes can influence the cAMP state.Therefore,LKB1 gene and the Hedgehog signaling pathway may exist some inevitable connection.

Objective: To study the influence of different ages on expression of Bcl-2 and Bax protein in the contusive brain tissues after traumatic brain injury (TBI), so as to probe into the molecular mechanism of the age influence on the prognosis of TBI patients. Methods: The expression of Bcl-2 and Bax protein in contusive and lacerated brain tissue (within 3 h to 9 h after trauma) in aged group (≥ 60 years), adult group (19-59 years) and non-adult group (≤18 years) was analyzed and compared by immunohistochemistry method and computer micrograph analysis. The temporal lobe samples of 15 patients with temporal epilepsy or vascular deformity were taken as control. Results: The expression of NGF, Bcl-2 and Bax protein in the contusive and lacerated brain tissue was higher in the 3 TBI groups than that in the control group. The ratio of Bcl-2/Bax expression in aged group was significantly lower than those in the adult and non-adult groups (P <0.05); and the ratio of Bcl-2/Bax expression in the adult group was significantly lower than that in the non-adult group (P<0.05). Conclusion: The expression of Bcl-2 and Bax protein after TBI is influenced by the age of sufferers; the decrease of Bcl-2/Bax ratio might be associated with the neurological deficits after TBI in aged patients and the higher ratio of Bcl-2/Bax might be associated with the better prognosis of TBI in non-adult patients.

Ecotoxicology ; Humans ; Proteomics ; Risk Assessment

DNA Methylation ; Humans ; Poly(ADP-ribose) Polymerases ; genetics ; metabolism

Biomarkers ; analysis ; Genomics ; methods ; trends ; Humans ; Preventive Medicine ; methods ; trends

Differential display-PCR was used to clone the differential expressed genes between Mycobacterium tuberculosis virulence strain H37Rv and its avirulent mutant H37Ra. All of different genes were cloned, sequenced and some were analyzed by Northern-blotting. Two cDNAs that appeared to be expressed in H37Rv, but not in H37Ra, were cloned and sequenced. Rv0170, and Rv1894c, code for proteins with unknown functions. The two gene were present in H37Ra, but not expressed. These results show that mRNA DD methodology can represent a potential tool for investigation of M. tuberculosis gene expression.

Esophageal Neoplasms ; metabolism ; pathology ; Female ; Humans ; Melanoma ; metabolism ; pathology ; Melanoma-Specific Antigens ; metabolism ; Middle Aged ; S100 Proteins ; metabolism