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Dietary micronutrients and gastric cancer: hospital based study

100%
Lazarević K., Nagorni A., Bogdanović D., Rančić N., Stošić L., Milutinović S.
Open Medicine
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2011
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vol. 6
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issue 6
783-787
EN
The association between micronutrients and gastric cancer is still unclear. The aim of this study is to determine the relationship between dietary intake of micronutrients and risk for gastric cancer. We used data from hospital-based case control study conducted at Clinical Centre Nis (Serbia) from 2005 and 2006. Patients (n=102) with first histologically confirmed gastric cancer and matched non-cancer patients (controls, n=204) were interviewed using structured questionnaire and FFQ (Food frequency questionnaire). Multivariate logistic regression analysis showed a significant positive association between gastric cancer and dietary intake of sodium (OR=6.22; 95%CI 1.99–7.86), but a significant negative association between potassium (OR 0.01; 95%CI 0.00–0.08), iron (OR 0.05; 95%CI 0.01–0.56), vitamin C (OR 0.05; 95%CI 0.01–0.38), vitamin E (OR 0.04; 95%CI 0.01–0.29) and niacin (OR 0.07; 95%CI 0.00–0.38) dietary intake. Intake of phosphorus, calcium, magnesium, zinc, retinol, β carotene, tiamin, vitamin B6, and folic acid was not significantly related to gastric cancer risk. In conclusion, we found that a dietary pattern of high consumption of antioxidants (vitamin C, vitamin E, niacin), iron and potassium and low consumption of foods that are sources of sodium, decreased risk for gastric cancer. Our results require confirmation in future studies.
2
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Correlation between SNPs in CDH1 and gastric cancer in Chinese population

80%
Lin Y., Yuan J., Wang L., Wang L., Ma Y., Wang Y., Chen J., Zhao H.
Open Medicine
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2014
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vol. 10
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issue 1
EN
Background. Many recent studies revealed that the single nucleotide polymorphisms have considerable effects on the susceptibility of cancer, such as prostate cancer, lung cancer and gastric cancer. The E-cadherin, a calcium-dependent transmembrane glycoprotein encoded by CDH1 gene, is critical for epithelial construction, intercellular adhesion and cell migration. Some associations have been reported between single nucleotide polymorphisms and gastric cancer in the Chinese population. Objective. To investigate whether the single nucleotide polymorphism in CDH1 gene is associated with the susceptibility of gastric cancer in the Chinese population. Material and methods. The genotypes of 5 known single nucleotide polymorphisms (rs33935154, rs121964871, rs121964874, rs121964875, rs121964876) were determined in 359 gastric cancer patients and 368 healthy controls. High resolution melting curve detection and sequencing analysis were used in the present study. Results. There is a statistical significance in the rs121964871 C>G polymorphism between gastric cancer patients and healthy controls (OR=1.769, 95%CI: 1.051-2.976). Elderly male individuals (>50 years of age) carrying this risk factor may be more susceptible to gastric cancer. Conclusions. The results indicated that the rs121964871 C>G polymorphism is associated with the susceptibility of gastric cancer in the Chinese population, with some age and sex-dependent tendencies observed.
3
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DCC and TS protein expression in resected gastric cancer: A Hellenic Cooperative Oncology Group Study

80%
Bamias A., Fountzilas G., Michael M., Konstantaras C., Vrettou E., Eleftheriadis E., Papakostas P., Papadimitriou K., Pavlidis N., Xiros N., Bai M.
Open Medicine
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2008
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vol. 3
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issue 1
29-39
EN
There is a high risk of relapse after resection of gastric cancer. We studied the prognostic significance of the deleted colorectal cancer (DCC) gene and thymidylate synthase (TS) protein expression after resection of gastric cancer. Protein expression in the primary tumor of 146 patients with serosal and/or lymph node involvement was studied immunohistochemically by using anti-DCC and anti-TS monoclonal antibodies. DCC expression was found in 69.9%, while low TS staining intensity (0+,1+) and focal staining (<25% of tumor cells stained) were found in 44.6% and 33.8%, respectively. Overall survival (OS) was significantly longer in patients with DCC (p=0.014) negative tumors. TS expression was not an independent prognostic factor. Lack of DCC expression was associated with significantly longer cause-specific survival (CSS) (p=0.040) after curative resection. In conclusion, DCC expression is an independent prognostic factor in patients undergoing resection of gastric cancer while TS expression was not associated with the prognosis in our study.
4
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Zastosowanie probiotyków w profilaktyce oraz leczeniu raka żołądka i raka jelita grubego

51%
Kaźmierczak- Siedlecka K. L., Makarewicz W.
Farmacja Polska
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2020
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vol. 76
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issue 2
118-124
EN
The composition of gut microbiota depends on many factors, such as age, life style (eating habits and the level of physical activity), pharmacological treatment (antibiotics, side effects of anti-cancer therapy) as well as surgical procedures. The gut microbiota is involved in carcinogenesis process. Furthermore, gut dysbiosis is described as qualitative and quantitative alterations in gut microbiota and it is observed in cancers. For instance, in patients with colorectal cancer the increased amount of Fusobacterium nucleatum, Bacteroides fragilis, Enterococcus faecalis, Streptococcus bovis as well as Peptostreptococcus anaerobius is noted. It was confirmed that amount of several specific bacteria, such as Lactobacillus, Escherichia-Shigella, Nitrospirae, Burkholderia fungorum and Lachnospiraceae, is increased in patients with gastric cancer. However, the major carcinogen involved in gastric carcinogenesis is Helicobacter pylori; it causes mucosa inflammation, mucosa atrophy, and as a consequence development of gastric cancer. Nowadays, there are several therapeutic methods, which may be used to alter the composition and the activity of gut microbiota. They include administration of probiotic strains, prebiotics, and synbiotics. Probiotics can be used to prevent the development of gastric and colorectal cancer, which was shown in many in vivo and in vitro studies. According to the most recent trials, probiotics reduce the incidence of diarrhoea associated with enteral nutrition. Probiotic strains may also be used as a supportive therapy in treatment of Helicobacter pylori infection. Notwithstanding, they can play a supportive role in standard eradication treatment due to reduction of adverse events of antibiotics. Probiotics decrease the incidence of infections in postooperative period, the frequency of abdominal pain, and radiation-induced diarrhoea. To sum up, probiotics may be used to prevent the development of cancer and they may significantly improve the efficiency of standard anti-cancer therapy.
PL
Mikrobiota przewodu pokarmowego jest modyfikowana przez wiele czynników, w tym styl życia, leczenie farmakologiczne oraz zabiegi chirurgiczne. Dysbioza jelitowa, czyli zaburzenia w składzie i aktywności mikrobioty, może wystąpić w przebiegu chorób nowotworowych. U pacjentów z rakiem jelita grubego obserwuje się zwiększone ilości bakterii – Fusobacterium nucleatum, Bacteroides fragilis, Enterococcus faecalis, Streptococcus bovis oraz Peptostreptococcus anaerobius. Największym karcynogenem raka żołądka jest Helicobacter pylori. Bakteria ta powoduje zapalenie błony śluzowej żołądka prowadząc do jej atrofii, a następnie do rozwinięcia nowotworu. Obecnie znanych jest kilka metod terapeutycznych modyfikujących mikrobiotę przewodu pokarmowego, w tym podaż szczepów probiotycznych, prebiotyków oraz synbiotyków. Probiotyki mogą być stosowane w profilaktyce oraz leczeniu raka żołądka i jelita grubego, co zostało potwierdzone w badaniach in vivo oraz in vitro. Według najnowszych doniesień, probiotyki są skuteczne w zmniejszeniu częstości występowania biegunki będącej skutkiem ubocznym żywienia enteralnego. Dotychczasowe badania potwierdzają także, że szczepy probiotyczne nie mogą być stosowane jako jedyny czynnik eradykacyjny Helicobacter pylori, ale stanowią terapię uzupełniającą podczas standardowego leczenia oraz redukują działania niepożądane antybiotykoterapii. Z kolei u chorych z rakiem jelita grubego probiotyki zmniejszają ryzyko rozwinięcia infekcji pooperacyjnych, bólów brzucha i biegunki związanej z radioterapią. Podsumowując, należy podkreślić, że probiotyki mają zastosowanie na etapie profilaktyki chorób nowotworowych, a także mogą znacząco poprawić wyniki standardowego leczenia przeciwnowotworowego.
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