Objectives: Implantation failure is a major problem in reproductive medicine, and despite the various methods described for treatment, there is little consensus on the most effective method. This study was conducted to investigate the effect of intrauterine injection of platelet-rich plasma (PRP) on the pregnancy rate of patients with a history of implantation failure in the in vitro fertilization (IVF) cycle. Study Design: In this study, women attending the infertility clinic of Ali ibn Abi Taleb Hospital, who had a history of implantation failure and were candidates for frozen embryo transfer (FET), were examined in Zahedan (Iran) in 2019. The patients were divided into two groups of PRP recipients and the control group. IVF was performed routinely, and in the PRP-receiving group, an intrauterine injection was given 48 h before embryo transfer (ET). The number of gestational sacs, the rate of implantation, the frequency of chemical and clinical pregnancies as well as the frequency of abortion were compared in the two groups. The collected data were analyzed by the SPSS software version 21 Results: Ninety patients with a history of implantation failure participated in the study, and finally, the information of 85 patients was studied. The frequency of chemical pregnancy was 40% in the experimental group, 27% in the control group, and regarding clinical pregnancy, 33% in the experimental group and 24% in the control group, but there was no significant difference between the two groups. The rate of implantation, the mean thickness of the endometrium, and the frequency of abortion did not differ significantly between the two groups Conclusion: In patients with endometrial thickness greater than 8 mm with a history of recurrent implantation failure, intrauterine injection of PRP had no effect on the fertility outcome.

Acute  pancreatitis (AP) is a common clinical  disease  caused mainly by gallstone impacting  the distal common bile-pancreatic duct and alcohol abuse, but other potential causes as  Endoscopic  retrograde cholangiopancreatography  (ERCP),  intra duct papillary mucinous tumor and hypercalcemia are claimed .  The incidence of AP has been increasing in recent years . Accordingly, AP is a multifactorial disease associated with tissue edema, acinar necrosis, hemorrhage and the release of digestive enzymes to the pancreatic interstitium and to the systemic circulation with increased cytokine production and release, which can ultimately lead to deleterious local and systemic effects . Previous evidence suggests that the pathogenesis of both AP and chronic pancreatitis can be associated with oxidative stress, regardless of the etiology of pancreatitis and is considered as a major pathogenic factor in AP .  In fact, reactive oxygen species (ROS) are the important mediators in the initiation and development of the disease which destroy the cellular membrane, releasing the digestive enzymes and cellular proteins into the pancreatic interstitium .