{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T11:09:38Z","timestamp":1784545778680,"version":"3.55.0"},"reference-count":37,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2021,1,28]],"date-time":"2021-01-28T00:00:00Z","timestamp":1611792000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2021,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>Ectopic pregnancy (EP) is one of the most important causes of maternal mortality. This study aimed to evaluate the immunohistochemical (IHC) expression of the cannabinoid receptor type\u20101 (CB1) and its association with CB1<jats:styled-content>\u2010<\/jats:styled-content>1359G\/A gene polymorphism (rs1049353) in the fallopian tubes in EP compared to controls.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>In this case\u2013control study, 100 women with EP (cases) and 100 women that underwent abdominal surgery due to the hysterectomy or uterine tubal ligation (healthy controls) were included. Genotyping of CB1\u20101359G\/A polymorphism, tissue expression of CB1 at the protein and mRNA levels were studied using restriction fragment length polymorphism, IHC method, and quantitative real\u2010time polymerase chain reaction (qRT\u2010PCR) analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Genotyping showed that in EP, the frequency of AA, AA+AG genotypes, and A allele was significantly higher than healthy control subjects (<jats:italic>p<\/jats:italic> =\u20090.001).<\/jats:p><jats:p>Also, patients with EP had significantly increased IHC expression of CB\u20101 compared to the control samples (<jats:italic>p<\/jats:italic> =\u20090.016). Patients with AA and AG genotypes had a significantly higher IHC expression of CB\u20101 compared to the GG genotype. qRT\u2010PCR analysis showed that patients with EP had significantly increased expression of CB\u20101 compared to the control samples (<jats:italic>p<\/jats:italic> &lt;\u20090.001). Patients with AA and AG genotypes had higher significant mRNA expression of CB\u20101 compared to the GG genotype.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>CB1 is likely to be effective in creating innate immunity in humans and can affect the process of EP in the fallopian tube. CB1 is also a pathological valuable factor in identifying the pathway of inflammation during ectopic implantation.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jog.14688","type":"journal-article","created":{"date-parts":[[2021,1,29]],"date-time":"2021-01-29T07:40:21Z","timestamp":1611906021000},"page":"1256-1264","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Cannabinoid receptor type\u20101 and its correlation with <scp>CB1<\/scp> gene <scp>polymorphism\u20101359G<\/scp>\/A in ectopic pregnancy compared to the control group"],"prefix":"10.1111","volume":"47","author":[{"given":"Bita","family":"Moudi","sequence":"first","affiliation":[{"name":"Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute Zahedan University of Medical Sciences  Zahedan Iran"},{"name":"Department of Histology, School of Medicine Zahedan University of Medical Sciences  Zahedan 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