Effect of teriparatide on the healing of mandibular condylar osteochondral defects: a preclinical study.

This study was performed to evaluate the effect of teriparatide therapy on the healing of osteochondral defects of the mandibular condylar. Ninety-six rats underwent surgery to create a defect in the condylar head on one side of the mandible, and were divided into two groups. One group received subcutaneous injection of 2 µg/kg/day teriparatide, and the other group received normal saline until sacrifice. On postoperative days 20, 40, and 60, 16 animals from each group were sacrificed, and bone and cartilage healing was histologically evaluated and semiquantitatively scored (1-5). The mean difference in healing score of the cartilaginous and subchondral parts of the defect between the teriparatide and control groups at days 20, 40 and 60 were 0.438 and 0.438, 0.813 and 0.750, and 1.125 and 0.813, respectively. The healing scores of the osteochondral defects in the teriparatide group were significantly (p< 0.05) higher than that in the control group at days 40 and 60. This study has shown beneficial effects of teriparatide on the healing of condylar osteochondral defects in rats. Clinical trials are required to extrapolate these findings to humans.

The Association of Dietary Approaches to Stop Hypertension (DASH) Diet with the Risk of Colorectal Cancer: A Meta-Analysis of Observational Studies.

Background: The Dietary Approaches to Stop Hypertension (DASH) diet has been associated with reduced hypertension and risk of cardiovascular diseases, nevertheless DASH diet is rich in foods that are recommended to be inversely associated with cancer risk. The objective of the present study was to conduct the first meta-analysis of studies investigating the associations between DASH diet and risk of colorectal cancer.Methods: Relevant studies were identified in PubMed and Scopus (up to April 2019). Meta-analysis was conducted to calculate the summary relative risk (RR) estimates based on the highest versus the lowest category of DASH scores.Results: Six articles (four prospective cohorts and two case-controls) were eligible. The pooled adjusted RR of Colorectal cancer for the highest DASH score versus the lowest category was 0.81 (95% confidence interval [CI]: 0.75-0.88).Conclusions: Our findings suggest that adherence to the DASH diet was associated with a lower risk of colorectal cancer. These results support the need to promote healthy diet with higher intake of whole grain, vegetables, fruits, and low-fat dairy products and lower intake of salt, sweets and saturated fat to reduce colorectal cancer risk.

Association between Dietary Inflammatory Index and the Risk of Prostate Cancer: A Meta-Analysis.

BACKGROUND: Diet is a known source of pro- and anti-inflammatory mediators, and inflammatory markers have been associated with mechanisms involved in prostate cancer initiation and progression. The Dietary Inflammatory Index (DII®) is a tool to assist researchers in determining the inflammatory potential of diet. The aim of this study was to conduct a meta-analysis to assess the association between DII and prostate cancer. METHODS: EMBASE and MEDLINE were searched from inception to February 2018, for relevant observational studies. The random effects model was used to calculate the overall relative risks (RRs) with 95% confidence intervals (CIs). RESULTS: Data from five case-control and one cohort study were eligible for inclusion. The adjusted pooled RR of prostate cancer for the highest (the most pro-inflammatory diet) versus lowest (the most anti-inflammatory diet) DII categories was 1.74 (95% CI: 1.24-2.43). The analysis in the DII score as a continuous variable was also performed and the results showed that the risk of prostate cancer was 9% higher for each one-point increase in the score. CONCLUSION: This meta-analysis suggests that promoting diets rich in anti-inflammatory food components (i.e., whole grains, fish, green vegetables, and fruits) should help in reducing preventing prostate cancer.