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Probiotics for the prevention of pediatric antibiotic-associated diarrhea.

BACKGROUND: Antibiotics alter the microbial balance commonly resulting in antibiotic-associated diarrhea (AAD). Probiotics may prevent AAD via providing gut barrier, restoration of the gut microflora, and other potential mechanisms of action. OBJECTIVES: The primary objectives were to assess the efficacy and safety of probiotics (any specified strain or dose) used for the prevention of AAD in children. SEARCH METHODS: MEDLINE, Embase, CENTRAL, CINAHL, and the Web of Science (inception to 28 May 2018) were searched along with registers including the ISRCTN and Clinicaltrials.gov. We also sear

Endotoxaemia in haemodialysis: a novel factor in erythropoetin resistance?

Background/objectivesTranslocated endotoxin derived from intestinal bacteria is a driver of systemic inflammation and oxidative stress. Severe endotoxaemia is an underappreciated, but characteristic finding in haemodialysis (HD) patients, and appears to be driven by acute repetitive dialysis induced circulatory stress. Resistance to erythropoietin (EPO) has been identified as a predictor of mortality risk, and associated with inflammation and malnutrition. This study aims to explore the potential link between previously unrecognised endotoxaemia and EPO Resistance Index (ERI) in HD patients.Me

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… Endotoxin enters the circulation via bacterial translocation, passage of intact bacteria and macro-molecules such as endotoxin across the intestinal barrier [16] . …

New Insights into the Relationship between Gut Microbiota and Radiotherapy for Cancer.

Cancer is the second most common cause of death among humans in the world, and the threat that it presents to human health is becoming more and more serious. The mechanisms of cancer development have not yet been fully elucidated, and new therapies are changing with each passing day. Evidence from the literature has validated the finding that the composition and modification of gut microbiota play an important role in the development of many different types of cancer. The results also demonstrate that there is a bidirectional interaction between the gut microbiota and radiotherapy treatments f

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… Radiation destroys the intestinal barrier and mucus layer, leading to bacterial translocation and activating inflammatory reactions. The dysbiosis caused by radiation will affect local and systemic immune responses. …

A Literature Review on the Impact of the Gut Microbiome on Cancer Treatment Efficacy, Disease Evolution and Toxicity: The Implications for Hematological Malignancies.

The gut microbiome plays a crucial role in modulating the efficacy and toxicity of cancer therapies, particularly in hematological malignancies. This review examines the dynamic interplay between gut microbiota and cancer treatments, such as chemotherapy, immunotherapy, and hematopoietic stem cell transplantation (HSCT). Disruptions in the gut microbiome, known as dysbiosis, are associated with adverse effects like gastrointestinal toxicity, neutropenia and cardiotoxicity during chemotherapy. Conversely, the supplementation of probiotics has shown potential in mitigating these side effects by

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… translocation in treated patients | [ 37 ] A study analyzing fecal samples from 35 patients with diffuse large B-cell lymphoma (DLBCL) revealed a lower abundance of Bacteroidetes in the DLBCL group compared to healthy controls [ 29 ]. … Additionally, research suggests that dysbiosis in cisplatin-treated patients may lead to bacterial translocation and supplementation with Ruminococcus gnavus could help mitigate systemic inflammation by lowering serum IL-6 levels [ 37 ] ( Table 2 ). …

Mucositis and Infection in Hematology Patients.

Survival in patients with hematological malignancies has improved over the years, both due to major developments in anticancer treatment, as well as in supportive care. Nevertheless, important and debilitating complications of intensive treatment regimens still frequently occur, including mucositis, fever and bloodstream infections. Exploring potential interacting mechanisms and directed therapies to counteract mucosal barrier injury is of the utmost importance if we are to continue to improve care for this increasingly growing patient population. In this perspective, I highlight recent advanc

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… Whether inflammatory cytokines and/or DAMPS and/or MAMPs modulate intestinal permeability, that final demise in the barrier is necessary before any bacterial translocation can result in bacteremia during neutropenia [ 9 , 99 ]. … Review on the effect of chemotherapy on the intestinal barrier: Epithelial permeability, mucus and bacterial translocation Biomed. Pharmacother. 2023 162 114644 10.1016/j.biopha.2023.114644 37018992 10. Sonis S.T. …

Gut-Bone Axis: A Non-Negligible Contributor to Periodontitis.

Periodontitis is a polymicrobial infectious disease characterized by alveolar bone loss. Systemic diseases or local infections, such as diabetes, postmenopausal osteoporosis, obesity, and inflammatory bowel disease, promote the development and progression of periodontitis. Accumulating evidences have revealed the pivotal effects of gut microbiota on bone health via gut-alveolar-bone axis. Gut pathogens or metabolites may translocate to distant alveolar bone via circulation and regulate bone homeostasis. In addition, gut pathogens can induce aberrant gut immune responses and subsequent homing o

Модификация РНК не позволяет расширить кодон-антикодонное взаимодействие облегчить +1 Смена рамы.

Закон о внесении изменений после записи в РНК путем стабилизации функционального соответствия РНК. Хотя их роль в декодировании генератора РНК (mRNA) хорошо установлена, менее ясно, как перенос изменений РНК (tRNA) за пределы антикодона способствует стабильности tRNA и точному синтезу белка. Отсутствие таких изменений приводит к ошибкам в переводе, в том числе к смене mRNA. Интегрировав передачу энергии одним молекулярного флуоресцентного резонанса и криогенную электронную микроскопию, мы продемонстрируем, что N1-methylguanosine (м1G) модификация в положении 37 Эшеричиа коли tRNAProL необходим

Роль микробиотики в гематологических заболеваниях: описательный обзор механизмов и терапевтического потенциала.

Микробиота человека, в частности кишечный микробиом, играет центральную роль в поддержании иммунного гомеостаза, регулировании гематопоисиса и модуляции хост-метаболизма с помощью биоактивных метаболитов, таких, как короткоцепные жирные кислоты (СКФА), желчные кислоты и соединения триптофана. Разрушение этой микробной экосистемы (дисбиоз) стало одним из ключевых факторов развития и развития гематологических магнатов (ГМ), включая острые и хронические лейкемии, лимфомы и множественные миеломы. В настоящем обзоре описательной части обобщаются последние данные (см.2022-2025) о сложных двухнаправл

Гут Микробиота и аутоиммунные заболевания: терапевтический потенциал пробиотики.

В последние годы все большее внимание уделяется роли кишечного микробиота в патогенезе аутоиммунных заболеваний, таких, как тип 1 диабет (T1D), ревматоидный артрит (RA) и множественный склероз (MS). Многочисленные исследования показали, что кишечный дисбиоз-несбалансированность кишечного микробного сообщества может повлиять на иммунную реакцию хост-компании путем модуляции подстрекательских путей, целостности кишечного барьера и функции иммунных клеток. Пациенты с T1D, RA и MS часто имеют меньшее количество противовоспалительных бактерий (например, Feecalibacterium prausnitzii) и слишком много

Multidrug-Resistant Gram-Negative Bacteria Decolonization in Immunocompromised Patients: A Focus on Fecal Microbiota Transplantation.

Antimicrobial resistance is an important issue for global health; in immunocompromised patients, such as solid organ and hematological transplant recipients, it poses an even bigger threat. Colonization by multidrug-resistant (MDR) bacteria was acknowledged as a strong risk factor to subsequent infections, especially in individuals with a compromised immune system. A growing pile of studies has linked the imbalance caused by the dominance of certain taxa populating the gut, also known as intestinal microbiota dysbiosis, to an increased risk of MDR bacteria colonization. Several attempts were p

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… translocation and septic morbidity. … Gut origin of sepsis: A prospective study investigating associations between bacterial translocation, gastric microflora, and septic morbidity Gut 1999 45 223 228 10.1136/gut.45.2.223 10403734 PMC1727620 23. McDonald D. Ackermann G. Khailova L. Baird C. Heyland D. Kozar R. Lemieux M. Derenski K. …

Intestinal Microbes and Hematological Malignancies.

Hematological malignancies are diverse, with high malignancy characteristics, poor prognoses, and high mortality rates. The development of hematological malignancies is driven by genetic factors, tumor microenvironment factors, or metabolic factors; however, even when considering all of these factors, one still cannot fully estimate the risk of hematological malignancies. Several recent studies have demonstrated an intimate connection between intestinal microbes and the progression of hematological malignancies, and gut microbes play a primary role in the initiation and progression of hematolo

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… Mechanically, small-intestinal barrier dysfunction (reduced ZO-1 and upregulation of defence response genes), which occurs spontaneously or upon intestinal damage, results in bacterial translocation and to high levels of IL-6. … Systemic microbial signals can bypass bacterial translocation in Tet2-deficient mice. Microbial-induced IL-6 is sensed by Tet2 −/− myeloid progenitor (MP) cells that overexpress IL-6Rα and are highly sensitive to IL-6 (Stat3 (pY705)). …

Bacterial Involvement in Progression and Metastasis of Adenocarcinoma of the Stomach.

Gastric cancer metastasis is a process in which the tumor microenvironment may carry significant influence. Helicobacter pylori (H. pylori) infection is well-established as a contributor to gastric carcinoma. However, the role that these bacteria and others may play in gastric carcinoma metastasis is a current focus of study. A review of the literature was conducted to elucidate the process by which gastric adenocarcinoma metastasizes, including its ability to utilize both the lymphatic system and the venous system to disseminate. Studies that investigate the tumor microenvironment at both the

Тип перегонки 1 диабет через ось эндоканнабиноидома-микробиота: системная биологическая перспектива.

Тип 1 диабет (T1D) давно признан аутоиммунным заболеванием на основе Т. Вместе с тем все больше фактов свидетельствует об участии в его развитии факторов, связанных с метаболизмом, подстрекательством и кишечной микробиотой. Эндоканнабиноидная система (ЭКС), являющаяся одним из ключевых регуляторов иммунного и метаболического гомеостаза, все чаще привлекается к аутоиммунной патофизиологии, в частности благодаря ее взаимодействию с кишечными метаболитами. В этой гипотетической статье подчеркивается необходимость пересмотра патофизиологии Т1D путем интеграции дисфункции ЭКС, кишечного дисбиоза и

Микробиота человека в области здравоохранения и отдельные раковые заболевания.

Большинство эпителиальных поверхностей нашего тела, пищеварительный тракт, дыхательные и врожденные системы, колонизируются большим количеством бактерий, археи, грибов, протозоанов и вирусов. Эти микробиота, особенно кишки, играют важную и полезную роль в пищеварении, метаболизме и синтезе витаминов. Их метаболиты стимулируют производство цитокина человеком, которое используется против потенциальных патогенов. На состав микробиоты влияет ряд внутренних и внешних факторов, включая питание, возраст, болезни и образ жизни. Такие изменения, называемые дисбиозом, могут быть связаны с развитием разл

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… It influences tight-junction assembly and mucin synthesis, thus enhancing gut barrier function and attenuating bacterial translocation [ 26 ]. …

Impact of Periodontal Host-Modulation Therapies on Oral-Gut Microbiome Axis in Periodontitis Patients with Hematological Diseases: A Narrative Review.

Host-modulating therapies and oral microbiome-targeted approaches are emerging options in periodontal care and are especially relevant for patients undergoing immunotherapy for hematologic malignancies. Immune dysregulation induced by immune checkpoint inhibitors or CAR-T cell therapy may worsen periodontal inflammation and alter the composition and functions of the oral microbiota. Beyond these, other immunomodulatory treatments commonly employed in hematologic malignancies-including monoclonal antibodies (e.g., rituximab, daratumumab), immunomodulatory drugs (e.g., lenalidomide, thalidomide)

Ось Гут-Брэйна в нейродегенерации: механистические связи между дисбиозом и нейроатологией.

& ЦЕЛЬ: Ось кишечника по сути представляет собой two- система связи, которая физически соединяет мозг с кишечным трактом. Связь поддерживается через ряд путей, включая нейронные, эндокринные и иммунные пути. Гут дисбиоз, который объясняется как дисбаланс в микробном сообществе, связан с причинно-следственной связью различных нейродегенеративных расстройств, таких, как болезнь Альцгеймера, болезнь Паркинсона и множественный склероз. Однако патологические механизмы в мозге известны лишь частично. В настоящем обзоре описывается процесс кишечного дисбиоза и нейродегенерации с подробным описанием ф

The Role of the Gut Microbiota in Allogeneic Hematopoietic Cell Transplantation.

Allogeneic hematopoietic cell transplantation (allo-HCT) is an effective treatment for patients with high-risk hematologic malignancies. Over the last decade, gut microbiota composition during allo-HCT has been associated with patients' outcomes. Treatment-related factors, in particular the use of broad-spectrum antibiotics and the conditioning regimen, frequently induce gut dysbiosis, which is associated with immune dysregulation, toxicity, and adverse outcomes, particularly after allo-HCT. Microbial metabolites further modulate immune responses and therapeutic efficacy. Emerging microbiota-t

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… Primary bile acids are converted by the gut microbiota into secondary bile acids, which preserve intestinal mucosal barrier integrity and prevent bacterial translocation through activation of the farnesoid X receptor (FXR). … This benefit may be attributed to the direct digestion and absorption of nutrients through the gut, which promotes intestinal motility, preserves barrier function, and limits bacterial translocation. …

Low-Bacterial Diet in Cancer Patients: A Systematic Review.

The low-bacterial diet (LBD) is a widely used dietary regimen to reduce the risk of food-borne infections in patients with neutropenic cancer, but its role is controversial due to its unclear benefits. The purpose of this study was to provide an updated analysis of the available evidence on the efficacy of the LBD to reduce the risk of infections, mortality rates, and quality of life (QoL) in neutropenic patients with cancer. A systematic literature search was conducted in the biomedical databases Cochrane Library, PubMed, CINHAL, and EMBASE. The process of the screening, selection, inclusion

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… The search utilized keywords such as ‘bacterial translocation’, ‘immunocompromised host’, ‘neutropenia’, and ‘low bacterial diet’, along with their variations. Boolean operators AND and OR were appropriately combined in search strings tailored to the specificities of each database. … Several authors define the LBD as a dietary regimen aimed at limiting the consumption of foods that can serve as a source of bacterial or yeast contamination and lead to infections associated with bacterial translocation [ 12 , 13 , 14 , 15 , 16 ]. …

Zoledronic acid enhances lipopolysaccharide-stimulated proinflammatory reactions through controlled expression of SOCS1 in macrophages.

Bisphosphonate-related osteonecrosis of the jaw (BRONJ) is a serious side effect of nitrogen-containing bisphosphonate (NBP) use. Many studies have shown that BRONJ is limited to the jawbone and does not occur in the other bones. We hypothesized that BRONJ is related to local bacterial iections and involves the innate immune system. To examine the relationship between BRONJ and innate immunity, we examined the effects of NBPs on macrophages, one of the important cell types in innate immunity. The expression of toll-like receptor-4 (TLR4) in cells after pretreatment with zoledronic acid (ZOL) d

Targeting the gut microbiota to enhance the antitumor efficacy and attenuate the toxicity of CAR-T cell therapy: a new hope?

Chimeric antigen receptor (CAR) -T cell therapy has achieved tremendous efficacy in the treatment of hematologic malignancies and represents a promising treatment regimen for cancer. Despite the striking response in patients with hematologic malignancies, most patients with solid tumors treated with CAR-T cells have a low response rate and experience major adverse effects, which indicates the need for biomarkers that can predict and improve clinical outcomes with future CAR-T cell treatments. Recently, the role of the gut microbiota in cancer therapy has been established, and growing evidence

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… Possible mechanisms include remote immune modulations by the gut microbiota and/or bacterial translocation to lymphoid organs. …