The search for minimally invasive treatment of osteoarthritis has led to the development of biological options such as platelet-rich plasma (PRP), mesenchymal stem cells (MSCs), and bone marrow aspirate concentrates. This research was conducted to study the outcomes of PRP administration in the chemical-induced model of osteoarthritis in rat knee.Methods and resultsTwo milligrams of monoiodoacetate (MIA) was used for the induction of arthritis in the right knee of 16 rats. Autologous PRP was prepared by double centrifugation, which was then administered in the arthritic knee of eight rats. This group was labeled as the treated group (A) while the rest were counted as the non-treated group (B). Chondrocyte count and uncalcified cartilage thickness were morphometrically assessed on hematoxylin and eosin (H&E) stained slides, and it was noted that treated group A had a higher chondrocyte count and more cartilage height as compared to non-treated group B. Intergroup comparison was done between the treated group (A) and non-treated group (B) using the independent t-test. P-values were found to be statistically significant for these parameters.ConclusionThis study thus concluded that PRP had induced an inhibitory effect on the apoptosis of chondrocytes, which, in turn, prevented the loss of cartilage height by inhibiting matrix loss.

Objective: To evaluate the effects of platelet-rich plasma injection on histological changes of osteoarthritis using the modified Mankin score in monoiodoacetate-induced rat knee model.

IntroductionAn understanding of epidemiology is fundamental for designing research and understanding evidence-based medicine (EBM). The purpose of our study was to determine the knowledge of epidemiology among postgraduate medical trainees.MethodsWe carried out a cross-sectional study from January 2017 to June 2017 at the Regional Centre Islamabad, College of Physicians and Surgeons Pakistan. About 204 postgraduate medical trainee were enrolled in the study after taking written consent. All of the participants were working as a postgraduate medical trainee in different hospitals of Rawalpindi and Islamabad. A self-designed structured questionnaire containing 20 multiple choice questions regarding knowledge of epidemiology was given to all the participants. Knowledge of epidemiology was measured and compared with gender, hospital, and previous history of research. Statistical Package for the Social Sciences (SPSS), version 21.0 (IBM, Armonk, NY) was used for data analysis.ResultsOut of 204 participants, 46.1% participants were males while 53.9% were females. The mean age of the participant was 28.5 ± 2.5. Majority fo the trainees (33.8%) were training in an Internal Medicine residency program. Most of the trainees (76%) had average knowledge of epidemiology while 18.6% of the trainees had good knowledge. Only 17.6% had some experience of research projects in the past, but this was not related to knowledge of epidemiology (p > 0.05).ConclusionOnly 18.6% of the postgraduate trainees had good knowledge regarding epidemiology and 76% had average knowledge. This knowledge did not relate to their gender, hospital settings, and previous experience of conducting research proposals and articles.

Understanding regarding application of biostatistics in research among PGTs improved significantly and immediately after teaching biostatistics in research methodology workshop.