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Osawa, Kayo,Nakarai, Chiaki,Akiyama, Minami,Hashimoto, Ryuta,Tsutou, Akimitsu,Takahashi, Juro,Takaoka, Yuko,Kawamura, Shiro,Shimada, Etsuji,Tanaka, Kenichi,Kozuka, Masaya,Yamamoto, Masahiro,Kido, Yosh Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.5
Genetic polymorphisms of uridine diphosphate-glucuronosyltransferases 1A6 (UGT1A6) and 1A7 (UGT1A7) may lead to genetic instability and colorectal cancer carcinogenesis. Our objective was to measure the interaction between polymorphisms of these repair genes and tobacco smoking in colorectal cancer (CRC). A total of 68 individuals with CRC and 112 non-cancer controls were divided into non-smoker and smoker groups according to pack-years of smoking. Genetic polymorphisms of UGT1A6 and UGT1A7 were examined using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). We found a weak association of UGT1A6 polymorphisms with CRC risk (crude odds ratio [OR], 1.65;95% confidence interval [95% CI], 0.9-3.1, P=0.107; adjusted OR 1.95%, 95% CI 1.0-3.8, P=0.051). The ORs for the UGT1A7 polymorphisms were statistically significant (crude OR: 26.40, 95% CI: 3.5-198.4, P=0.001; adjusted OR: 21.52, 95% CI: 2.8-164.1, P=0.003). The joint effect of tobacco exposure and UGTIA6 polymorphisms was significantly associated with colorectal cancer risk in non-smokers (crude OR, 2.11; 95% CI, 0.9-5.0, P=0.092; adjusted OR 2.63, 95% CI, 1.0-6.7, P=0.042). In conclusion, our findings suggest that UGT1A6 and UGT1A7 gene polymorphisms are associated with CRC risk in the Japanese population. In particualr, UGT1A6 polymorphisms may strongly increase CRC risk through the formation of carcinogens not associated with smoking.
Tadayuki Takagi,Mitsuru Sugimoto,Hidemichi Imamura,Yosuke Takahata,Yuki Nakajima,Rei Suzuki,Naoki Konno,Hiroyuki Asama,Yuki Sato,Hiroki Irie,Jun Nakamura,Mika Takasumi,Minami Hashimoto,Tsunetaka Kato 대한소화기내시경학회 2023 Clinical Endoscopy Vol.56 No.1
high tumors. Therefore, sufficient sampling of histological specimens is necessary in cases of unresectable pancreatic cancer (UR-PC). This multicenter study investigated the efficacy of endoscopic ultrasound-guided fine-needle biopsy (EUS-FNB) using a Franseen needlefor MSI evaluation in patients with UR-PC. Methods: A total of 89 patients with UR-PC who underwent endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) orEUS-FNB using 22-G needles at three hospitals in Japan (2018–2021) were enrolled. Fifty-six of these patients (FNB 23 and FNA 33)were followed up or evaluated for MSI. Patient characteristics, UR-PC data, and procedural outcomes were compared between patientswho underwent EUS-FNB and those who underwent EUS-FNA. Results: No significant difference in terms of sufficient tissue acquisition for histology was observed between patients who underwentEUS-FNB and those who underwent EUS-FNA. MSI evaluation was possible significantly more with tissue samples obtained usingEUS-FNB than with tissue samples obtained using EUS-FNA (82.6% [19/23] vs. 45.5% [15/33], respectively; p<0.01). In the multivariateanalysis, EUS-FNB was the only significant factor influencing the possibility of MSI evaluation. Conclusions: EUS-FNB using a Franseen needle is desirable for ensuring sufficient tissue acquisition for MSI evaluation.