High-fat diet feeding triggers a regenerative response in the adult zebrafish brain.

Non-alcoholic fatty liver disease (NAFLD) includes a range of liver conditions ranging from excess fat accumulation to liver failure. NAFLD is strongly associated with high-fat diet (HFD) consumption that constitutes a metabolic risk factor. While HFD has been elucidated concerning its several systemic effects, there is little information about its influence on the brain at the molecular level. Here, by using a high-fat diet (HFD)-feeding of adult zebrafish, we first reveal that excess fat uptake results in weight gain and fatty liver. Prolonged exposure to HFD induces a significant increase in the expression of pro-inflammation, apoptosis, and proliferation markers in the liver and brain tissues. Immunofluorescence analyses of the brain tissues disclose stimulation of apoptosis and widespread activation of glial cell response. Moreover, glial activation is accompanied by an initial decrease in the number of neurons and their subsequent replacement in the olfactory bulb and the telencephalon. Long-term consumption of HFD causes activation of Wnt/ß-catenin signaling in the brain tissues. Finally, fish fed an HFD induces anxiety, and aggressiveness and increases locomotor activity. Thus, HFD feeding leads to a non-traumatic brain injury and stimulates a regenerative response. The activation mechanisms of a regeneration response in the brain can be exploited to fight obesity and recover from non-traumatic injuries.

Community Pharmacists' Knowledge on Cancer and Screening Methods.

BACKGROUND AND OBJECTIVE: The aim of the study is to evaluate the knowledge of community pharmacists on cancer and screening methods. SETTING AND METHOD: This study was a descriptive cross-sectional study and was conducted between January-June 2020 in Istanbul/Turkey. a structured questionnaire was applied to pharmacists as online. The questionnaire was prepared by the researchers and consisted of 49 questions; basic information about cancer (15 items), signs and symptoms (11 items), causes and risk factors (14 items), cancer screening methods (9 items). RESULTS: It was determined that the majority (>90%) of the pharmacists did not receive any education on cancer and/or cancer screening methods after graduation. The sufficient knowledge level of the pharmacists about cancer basics, signs and symptoms, and risk factors were found to be as 80%, 77%, and 67%, respectively. The internal consistency level of the questionnaire was calculated (Cronbach's alpha = 0.814). The item "Every woman should perform breast self-examination and notify a health professional when there is a change in breast appearance or feeling," was answered correctly by 98% of the pharmacists. It was determined that 71% of the pharmacists gave the correct answer to the item "Women aged 21-30 years should have a PAP smear every 3 years". CONCLUSION: According to the results of the study, while the rate of sufficient knowledge level on cancer was found to be low, knowledge on cancer screening was found to be sufficient. We think that pharmacists should receive training on cancer and screening methods and to follow the guidelines closely.