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 .
Background: Breast cancer is the main cause of cancer in women and the second cause of malignancy deaths. Ki-67 is one of the molecular markers used to evaluate cancer prognosis along with other factors such as age, tumor size, lymph node involvement, estrogen receptor (ER), progesterone receptor (PR), P53, human epidermal growth factor receptor-2 (HER-2), histological and nuclear grades. This study was aimed to evaluate the correlation of KI-67 expression with some biomarkers and clinico-pathological characteristics in breast cancer patients. Materials and Methods: A total of 513 cases (all female) aged 40- 80 years, were randomly selected from patients who were admitted in two centers affiliated with Tehran University of Medical Sciences (Buo-alli and Kasra hospitals) over a 7-year period (2010-2015). Assessment of tumors for HER-2, P53, ER PR, pathological type and histologic grade was performed. Ki-67 labelling index (Ki-67LI) was defined as the percentage of MIB1-positive cells among a total number of 1,000 malignant cells at high-power magnification (×400). Results: Our study showed that age, ER and PR status were negatively correlated with Ki-67LI (P<0.05). Moreover, number of lymph nodes involved, HER-2, P53 and nuclear grades had a positive correlation with Ki-67LI (P<0.05), whereas, tumor size and histological grade showed no significant correlation with Ki-67LI (P =0.195 and P=0.721, respectively). Conclusion: Results of our study and other studies confirm that the expression of Ki-67 is significantly associated with ER, PR, HER-2 and P53 status. On the other hand, Ki-67 relationship with clinical characteristics such as age, tumor size and lymph node metastasis is not completely established and needs further research.[GMJ.2016;5(2):90-97]
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.