ABSTRACT
Introduction: It is long known that vitamin D deficiency was common in patients with liver disease, but little is known on the therapeutic effects of vitamin D, especially in patients with chronic liver disease. In this study, we aimed to systematically review the literatures and study the evidences in which the effects of vitamin D supplementation had been investigated on the severity of chronic liver disease or liver cirrhosis
Methods: A systematic literature search was performed by using the following key terms "vitamin D supplementation" and "chronic liver disease" in the PubMed, Scopus and Google scholar to find relevant articles. After collecting the eligible documents, data were extracted and described based on the purpose of this review
Result: Of total 196 articles found, only 7 relevant documents with 518 studied patients were included. The results of this study showed that the levels of 25[OH] D were considerably lower in patients with chronic liver disease. Findings showed that vitamin D supplementation can rise up the mean serum level of 25[OH] D in patients with severe vitamin D deficiency, especially patients with liver cirrhosis
Conclusion: The results of this review showed that vitamin D deficiency is associated with the severity of liver disease and may have prognostic value in the assessment of liver disease. Also, it was shown that vitamin D supplementation may be helpful for the treatment of liver disease at least in certain groups of patients
ABSTRACT
Background: Vitamin D deficiency is believed to cause variety of abnormalities such as liver stifihess and fibrosis. It is also shown that vitamin D deficiency may result in chronic liver disease or liver cirrhosis. In this study, we aimed to systematically review the literature wherein the relationship between vitamin D deficiency and the severity of chronic liver disease or liver cirrhosis had been investigated
Materials and Methods: PubMed, Scopus, and Google scholar were searched using the following search method [vitamin D deficiency OR vitamin D insufficiency OR insufficient vitamin D] AND [chronic liver disease OR chronic hepatitis OR cirrhosis OR liver cirrhosis] AND [severity OR intensity] to evaluate the role of vitamin D deficiency or vitamin D inadequacy in the occurrence and severity of chronic liver disease. Articles were collected and the data were extracted
Results: Totally, 641 articles were found through searching the databases and reference list scanning. Of the collected documents, only 19 articles with 4895 studied patients were included and analyzed. The results of this study showed that almost 80% of patients with chronic liver disease had severe vitamin D deficiency
Conclusion: Vitamin D deficiency is associated with the occurrence of chronic liver disease. The severity of liver cirrhosis is also associated with the level of 25 [OH] in progressive liver disease
ABSTRACT
Introduction: Colorectal cancer [CRC] is the third leading cause of cancer deaths in the world, and hereditary factors and family history are responsible for the incidence and development of the disease in 20 to 30% of cases. Lynch syndrome, or hereditary nonpolyposis colorectal cancer [HNPCC], is the most common hereditary form of CRC that is inherited in an autosomal dominant manner. This study consisted of a systematic literature review of research articles that described the prevalence of HNPCC in Iranian patients with CRC
Methods: A systematic literature search was conducted in the PubMed, Scopus, IranMedex, and Google Scholar databases to identify relevant articles that describe HNPCC or Lynch syndrome in patients with CRC in Iran. For this purpose, a keyword search of the following terms was employed: [[[Hereditary nonpolyposis colorectal cancer OR HNPCC OR Lynch syndrome]] AND [colorectal cancer OR familial colorectal cancer OR colon cancer OR rectal cancer OR bowel cancer]] AND IRAN. All eligible documents were collected, and the desired data were qualitatively analyzed
Result: Of the 67 articles that were found via the initial database search, only 12 were deemed to be of relevance to the current study. These articles included a total population of 3237 and this sample was selected and qualitatively analyzed. The findings of the review revealed that the frequency of mutation in MLH1, MSH2, PMS2, and MSH6 genes varied between 23.1% and 62.5% among the studied families. This indicated that HNPCC is linked with up to 5.5% of the total cases of colorectal cancers in Iran
Conclusion: The results of this study revealed that the hereditary form of HNPCC or Lynch syndrome is significantly high among patients with CRC in Iran