Abstract:Abstract:Világszerte, így hazánkban is drámai növekedést mutat a Clostridium difficile fertőzés okozta enterális megbetegedések előfordulása, sajnos riasztóan magas költségvonzattal, mortalitási mutatókkal, recidiva aránnyal és terápia refrakteritással. Nem meglepő, hogy aktívan folyik alternatív kezelési és megelőzési stratégiák kutatása, fejlesztése és bevezetése. Ezek közül egyelőre egyedül a széklettranszplantáció, más néven faecalis bacteriotherápia kezd nemzetközileg elterjedni, a beavatkozással elérhető… Show more
“…The collection and biobanking of feces was authorized by the Hungarian national authority (ETT). Patients and healthy volunteers meeting the following criteria were excluded from the study according to the corresponding national guideline for fecal transplantation 68 : (1) has previous history of breast cancer or had been operated due to neoplasia, (2) has a disease of unknown origin, (3) has chronic contagious disease, (4) had contagious diarrhea 6 months prior to enrollment, (5) taken antibiotics in the 6 months prior to enrollment, (6) had chemotherapy, biological therapy or immunosuppressive therapy 6 months prior to enrollment, (7) used intravenous drugs 12 months prior to enrollment, (8) had piercing, tattooing, acupuncture or other endangering behavior or action 12 months prior to enrollment, (9) exposition to an allergen to which the enrolled individual had been sensitized to, (10) underwent colonoscopy 12 months prior to enrollment. First morning feces was sampled; samples were frozen and deposited in the biobank two hours after defecation.…”
Recent studies showed that changes to the gut microbiome alters the microbiome-derived metabolome, potentially promoting carcinogenesis in organs that are distal to the gut. In this study, we assessed the relationship between breast cancer and cadaverine biosynthesis. Cadaverine treatment of Balb/c female mice (500 nmol/kg p.o. q.d.) grafted with 4T1 breast cancer cells ameliorated the disease (lower mass and infiltration of the primary tumor, fewer metastases, and lower grade tumors). Cadaverine treatment of breast cancer cell lines corresponding to its serum reference range (100–800 nM) reverted endothelial-to-mesenchymal transition, inhibited cellular movement and invasion, moreover, rendered cells less stem cell-like through reducing mitochondrial oxidation. Trace amino acid receptors (TAARs), namely, TAAR1, TAAR8 and TAAR9 were instrumental in provoking the cadaverine-evoked effects. Early stage breast cancer patients, versus control women, had reduced abundance of the CadA and LdcC genes in fecal DNA, both responsible for bacterial cadaverine production. Moreover, we found low protein expression of E. coli LdcC in the feces of stage 1 breast cancer patients. In addition, higher expression of lysine decarboxylase resulted in a prolonged survival among early-stage breast cancer patients. Taken together, cadaverine production seems to be a regulator of early breast cancer.
“…The collection and biobanking of feces was authorized by the Hungarian national authority (ETT). Patients and healthy volunteers meeting the following criteria were excluded from the study according to the corresponding national guideline for fecal transplantation 68 : (1) has previous history of breast cancer or had been operated due to neoplasia, (2) has a disease of unknown origin, (3) has chronic contagious disease, (4) had contagious diarrhea 6 months prior to enrollment, (5) taken antibiotics in the 6 months prior to enrollment, (6) had chemotherapy, biological therapy or immunosuppressive therapy 6 months prior to enrollment, (7) used intravenous drugs 12 months prior to enrollment, (8) had piercing, tattooing, acupuncture or other endangering behavior or action 12 months prior to enrollment, (9) exposition to an allergen to which the enrolled individual had been sensitized to, (10) underwent colonoscopy 12 months prior to enrollment. First morning feces was sampled; samples were frozen and deposited in the biobank two hours after defecation.…”
Recent studies showed that changes to the gut microbiome alters the microbiome-derived metabolome, potentially promoting carcinogenesis in organs that are distal to the gut. In this study, we assessed the relationship between breast cancer and cadaverine biosynthesis. Cadaverine treatment of Balb/c female mice (500 nmol/kg p.o. q.d.) grafted with 4T1 breast cancer cells ameliorated the disease (lower mass and infiltration of the primary tumor, fewer metastases, and lower grade tumors). Cadaverine treatment of breast cancer cell lines corresponding to its serum reference range (100–800 nM) reverted endothelial-to-mesenchymal transition, inhibited cellular movement and invasion, moreover, rendered cells less stem cell-like through reducing mitochondrial oxidation. Trace amino acid receptors (TAARs), namely, TAAR1, TAAR8 and TAAR9 were instrumental in provoking the cadaverine-evoked effects. Early stage breast cancer patients, versus control women, had reduced abundance of the CadA and LdcC genes in fecal DNA, both responsible for bacterial cadaverine production. Moreover, we found low protein expression of E. coli LdcC in the feces of stage 1 breast cancer patients. In addition, higher expression of lysine decarboxylase resulted in a prolonged survival among early-stage breast cancer patients. Taken together, cadaverine production seems to be a regulator of early breast cancer.
“…The bacteria are often carried by clinically symptomatic patients even before admission ( Péterfi, 2015 ). It has also been shown to be an essential element of the intestinal flora of infants ( Jangi and Lamont, 2010 ) and is not uncommon in the (even healthy) population without symptoms of CDI ( Nagy et al., 2013 ).…”
Section: Introductionmentioning
confidence: 99%
“…has also been shown to be an essential element of the intestinal flora of infants (Jangi and Lamont, 2010) and is not uncommon in the (even healthy) population without symptoms of CDI (Nagy et al, 2013).…”
IntroductionClostridioides difficile infections (CDI) continue to pose a challenge for clinicians. Fecal microbiota transplantation (FMT) is an effective treatment option in CDI. Furthermore, recent and ongoing studies suggest potential benefits of FMT in other diseases as well.MethodsWe would like to present a novel protocol for encapsulation of lyophilized fecal material. Our method provides with better compliance as well as improved flexibility, storage and safety.ResultsFMT was conducted in 28 patients with an overall success rate of 82,14% using apsules containing lyophilized stool. 16 of patients were given capsules with lessened bacteria counts. The success rate in this group was 93,75%.DiscussionThe results highlight the still unanswered questions about the mechanism of action and contribute to a wider use of FMT in the clinical praxis and in research.
Dramatic changes in the epidemiology of Clostridium difficile infections have been reported from the western world in the past decade. The proportion of severe cases is significantly elevating and clinicians now have to contend with the problem of additional and more frequent episodes of recurrences including an upward trend in the mortality rate. This situation led us to investigate the possibility of the fecal microbiota transplantation (FMT). An amount of 100 ml of fecal microbiota solution was instilled into a nasojejunal (NJ) tube in 16 cases and into a nasogastric (NG) tube in 44 cases. In all of the cases, where the solution was instilled via nasojejunal tubes, the symptoms resolved within 24 h. We did not note any recurrences in this group. When the material was flushed in through nasogastric tubes, the symptoms resolved in 39 (88.64%) cases within 24 h. In this group, we have experienced a recurrent episode of C. difficile infection in five (11.36%) cases. Three of them were cured with a second transplantation. We have found that in our practice the upper gastrointestinal tract methods had the primary cure rate of 91.67%, whereas the secondary cure rate is 96.67%. When we compared the NJ and NG methods, we have found that the differences in the outcomes are not significant statistically (p = 0.3113 using Fisher's exact probability test). In conclusion, FMT proved to be very effective, particularly in recurrent infections and in cases where conventional treatment had failed.
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.