The cell viability was measured by MTT and apoptosis rate by flow cytometry analysis. The expression of p38, p-p38, ERK, p-ERK, Akt, p-Akt, Bcl-2, and Bax in neurons was detected by immunoblotting. The results showed that as compared with H2O2 treatment, exogenous SHH could increase
the expression of p-Akt by 20% and decrease the expression of p-ERK by 33%. SHH exerted no significant effect on p38 mitogen-activated protein kinase (p38 MAPK) pathway. Blockade of PI3K/Akt pathway by LY294002 decreased the cell viability by 17% and increased the cell apoptosis rate by selleck kinase inhibitor 2-fold. LY294002 treatment could up-regulate the expression of the pro-apoptotic gene Bax by 12% and down-regulate the expression of the anti-apoptotic gene Bcl-2 by 54%. In conclusion, SHH pathway may activate PI3K/Akt pathway and inhibit the activation of the ERK pathway in neurons under oxidative stress. The PI3K/Akt pathway plays a key role in the neuroprotection of SHH. SHH/PI3K/Bcl-2 pathway may be implicated in the protection of neurons against H2O2-induced apoptosis.”
“Background: Oral health status is poor and a disregarded health issue among patients with schizophrenia that is associated with the risk for additional social stigmatization and potentially fatal infections.\n\nMethod: A historical,
prospective database study of dental visits, utilizing the Danish National Patient Registry, of 21,417 patients with ICD-10-diagnosed schizophrenia Selleckchem Fer-1 in the year 2006 and of 18,892 patients for the 3-year period of 2004-2006 was conducted. Multiple logistic regression PCI-32765 analyses were used to identify
risk factors for lack of dental care.\n\nResults: Only 43% of patients with schizophrenia (9,263/21,417)-compared to an annual dental visit rate of 68% in the general adult Danish population (2,567,634/3,790,446) visited the dentist within 12 months in 2006 (OR = 2.8; 95% CI, 2.7-2.9; P<.0001). Moreover, only 31% of schizophrenia patients complied with a regular annual dental check-up visit between 2004 and 2006. Nonadherence to annual dental visits was consistently predicted by substance abuse diagnosis, involuntary legal status, living in an institution, admission to a psychiatric facility for a minimum of 30 days, and male sex, whereas clozapine treatment, atypical antipsychotic treatment, at least monthly outpatient visits, and age > 50 years were associated with a lower risk for inappropriate dental care.\n\nConclusions: Patients with schizophrenia visit dentists much less frequently than the general population in the same country. Health professionals should pay more attention to the dental health care of patients with schizophrenia, actively encourage patients to regularly visit the dentist, and establish a formal collaboration with dentists to improve the dental health aspects of this disadvantaged patient group.