Frank Jochum, Martina Meyer-Krott, Tina Hübler, Maja Lorenz, Raffi Bedikian, Joseph Zakarian, Anja Litzka, Guido Judex, Holger Hertzberg, Daniela Klee, Lothar Maurer, Martin Schacht, Adnan Al-Radhi, Jan Maier, Alexander Kröckel, Christian Faustmann, Luca Lavalle, Samir Dahbane
{"title":"Real-world evidence study on tolerance and growth in infants fed an infant formula with two human milk oligosaccharides vs mixed fed and exclusively breastfed infants.","authors":"Frank Jochum, Martina Meyer-Krott, Tina Hübler, Maja Lorenz, Raffi Bedikian, Joseph Zakarian, Anja Litzka, Guido Judex, Holger Hertzberg, Daniela Klee, Lothar Maurer, Martin Schacht, Adnan Al-Radhi, Jan Maier, Alexander Kröckel, Christian Faustmann, Luca Lavalle, Samir Dahbane","doi":"10.1186/s40348-023-00162-6","DOIUrl":"10.1186/s40348-023-00162-6","url":null,"abstract":"<p><strong>Introduction: </strong>Human milk oligosaccharides (HMOs) are important components of human milk having diverse functions in the development of infants. Randomized controlled trials (RCTs) have demonstrated that infant formulas with the HMOs 2'-fucosyllactose (2'FL) and lacto-N-neotetraose (LNnT) are safe, well-tolerated, and support normal growth. This study aimed to generate real-world evidence (RWE) on growth and gastrointestinal (GI) tolerance in infants consuming a formula with 1 g/L 2'FL and 0.5 g/L LNnT, including a mixed feeding group not studied before in RCTs.</p><p><strong>Participants and methods: </strong>This 8-week open-label prospective multicenter study was conducted in Germany and Austria, and included groups of healthy, exclusively breastfed infants (BF), exclusively formula-fed infants (FF) who received the HMO-formula, and infants mixed fed with both HMO formula and human milk (MF). Co-primary outcomes were anthropometry and gastrointestinal tolerance via validated Infant Gastrointestinal Symptom Questionnaire (IGSQ). Secondary outcomes included formula satisfaction and adverse events (AEs).</p><p><strong>Results: </strong>One-hundred six infants completed the study (46 FF, 22 MF, and 38 BF). Mean anthropometric z-scores were comparable between groups and generally within ± 0.5 of WHO medians at week 8. IGSQ composite scores demonstrated good GI tolerance in all groups with no significant group differences at week 4 or 8. IGSQ composite scores in FF improved during the course of the study and parents provided high satisfaction ratings for the HMO-formula. Four potentially product-related AEs were reported in FF (no in MF).</p><p><strong>Conclusions: </strong>In this RWE study examining an infant formula with HMOs, growth and GI tolerance outcomes were confirming the good tolerance and safety of this early feeding option previously reported in RCTs.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"10 1","pages":"7"},"PeriodicalIF":0.0,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10439867/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10423192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Markos K Tomidis Chatzimanouil, Ines Goppelt, Yvonne Zeissig, Ulrich J Sachs, Martin W Laass
{"title":"Metamizole-induced agranulocytosis (MIA): a mini review.","authors":"Markos K Tomidis Chatzimanouil, Ines Goppelt, Yvonne Zeissig, Ulrich J Sachs, Martin W Laass","doi":"10.1186/s40348-023-00160-8","DOIUrl":"10.1186/s40348-023-00160-8","url":null,"abstract":"<p><p>Metamizole is an analgesic, antipyretic, and spasmolytic drug in Germany only approved for the treatment of severe pain or high fever that does not respond to other measures. In recent years, an increased use has been described among both adults and children, often against the approved indication. The most important side effect of metamizole is the development of agranulocytosis (neutrophil count < 500/µL). Incidence of metamizole-induced agranulocytosis (MIA) ranges depending on the study from 0.96 cases per million per year to 1:1602 per patient and metamizole prescription. The risk of agranulocytosis in children remains unclear, but is probably lower than in adults. Female gender and older age are associated with higher incidence, reflecting prescription distribution. MIA is dose-independent and risk seems to increase with duration of intake. In patients with past exposure, re-exposure may lead to rapid onset. MIA is believed to be induced either through immunologic or toxic mechanisms. MIA presents with fever, sore throat, fatigue, and mucosal inflammation, up to ulceration. Even in the case of suspected MIA, treatment with metamizole should be immediately paused and an examination of the blood cell count is required. In case of local or systemic infections, empirical therapy with broad-spectrum antibiotics should be administered. G-CSF therapy should be limited to patients with poor prognostic factors. The patient should be monitored closely until the neutrophil count returns to normal. Re-exposure to metamizole must be avoided.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"10 1","pages":"6"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10435429/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10046035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Valentina Natoli, Amandine Charras, Gabriele Hahn, Christian M Hedrich
{"title":"Neuropsychiatric involvement in juvenile-onset systemic lupus erythematosus (jSLE).","authors":"Valentina Natoli, Amandine Charras, Gabriele Hahn, Christian M Hedrich","doi":"10.1186/s40348-023-00161-7","DOIUrl":"10.1186/s40348-023-00161-7","url":null,"abstract":"<p><p>Systemic lupus erythematosus (SLE) is a rare autoimmune/inflammatory disease with significant morbidity and mortality. Approximately 15-20% of SLE patients develop the disease during childhood or adolescence (juvenile-onset SLE/jSLE). Patients with jSLE exhibit more variable and severe disease when compared to patients with disease-onset during adulthood. Neuropsychiatric (NP) involvement is a clinically heterogenous and potentially severe complication. Published reports on the incidence and prevalence of NP-jSLE are scarce, and the exact pathophysiology is poorly understood.This manuscript provides a review of the existing literature, suggesting NP involvement in 13.5-51% of jSLE patients. Among patients with NP-jSLE affecting the CNS, we propose two main subgroups: (i) a chronic progressive, predominantly type 1 interferon-driven form that poorly responds to currently used treatments, and (ii) an acutely aggressive form that usually presents early during the disease that may be primarily mediated by auto-reactive effector lymphocytes. While this hypothesis requires to be tested in large collaborative international cohort studies, it may offer future patient stratification and individualised care.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"10 1","pages":"5"},"PeriodicalIF":2.4,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10412509/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9974550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Perinatal origins of bronchopulmonary dysplasia-deciphering normal and impaired lung development cell by cell.","authors":"I Mižíková, B Thébaud","doi":"10.1186/s40348-023-00158-2","DOIUrl":"https://doi.org/10.1186/s40348-023-00158-2","url":null,"abstract":"<p><p>Bronchopulmonary dysplasia (BPD) is a multifactorial disease occurring as a consequence of premature birth, as well as antenatal and postnatal injury to the developing lung. BPD morbidity and severity depend on a complex interplay between prenatal and postnatal inflammation, mechanical ventilation, and oxygen therapy as well as associated prematurity-related complications. These initial hits result in ill-explored aberrant immune and reparative response, activation of pro-fibrotic and anti-angiogenic factors, which further perpetuate the injury. Histologically, the disease presents primarily by impaired lung development and an arrest in lung microvascular maturation. Consequently, BPD leads to respiratory complications beyond the neonatal period and may result in premature aging of the lung. While the numerous prenatal and postnatal stimuli contributing to BPD pathogenesis are relatively well known, the specific cell populations driving the injury, as well as underlying mechanisms are still not well understood. Recently, an effort to gain a more detailed insight into the cellular composition of the developing lung and its progenitor populations has unfold. Here, we provide an overview of the current knowledge regarding perinatal origin of BPD and discuss underlying mechanisms, as well as novel approaches to study the perturbed lung development.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"10 1","pages":"4"},"PeriodicalIF":0.0,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10113423/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10348820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Valentina Bruno, Anne Katrin Mühlig, Jun Oh, Christoph Licht
{"title":"New insights into the immune functions of podocytes: the role of complement.","authors":"Valentina Bruno, Anne Katrin Mühlig, Jun Oh, Christoph Licht","doi":"10.1186/s40348-023-00157-3","DOIUrl":"https://doi.org/10.1186/s40348-023-00157-3","url":null,"abstract":"<p><p>Podocytes are differentiated epithelial cells which play an essential role to ensure a normal function of the glomerular filtration barrier (GFB). In addition to their adhesive properties in maintaining the integrity of the filtration barrier, they have other functions, such as synthesis of components of the glomerular basement membrane (GBM), production of vascular endothelial growth factor (VEGF), release of inflammatory proteins, and expression of complement components. They also participate in the glomerular crosstalk through multiple signalling pathways, including endothelin-1, VEGF, transforming growth factor β (TGFβ), bone morphogenetic protein 7 (BMP-7), latent transforming growth factor β-binding protein 1 (LTBP1), and extracellular vesicles.Growing literature suggests that podocytes share many properties of innate and adaptive immunity, supporting a multifunctional role ensuring a healthy glomerulus. As consequence, the \"immune podocyte\" dysfunction is thought to be involved in the pathogenesis of several glomerular diseases, referred to as \"podocytopathies.\" Multiple factors like mechanical, oxidative, and/or immunologic stressors can induce cell injury. The complement system, as part of both innate and adaptive immunity, can also define podocyte damage by several mechanisms, such as reactive oxygen species (ROS) generation, cytokine production, and endoplasmic reticulum stress, ultimately affecting the integrity of the cytoskeleton, with subsequent podocyte detachment from the GBM and onset of proteinuria.Interestingly, podocytes are found to be both source and target of complement-mediated injury. Podocytes express complement proteins which contribute to local complement activation. At the same time, they rely on several protective mechanisms to escape this damage. Podocytes express complement factor H (CFH), one of the main regulators of the complement cascade, as well as membrane-bound complement regulators like CD46 or membrane cofactor protein (MCP), CD55 or decay-accelerating factor (DAF), and CD59 or defensin. Further mechanisms, like autophagy or actin-based endocytosis, are also involved to ensure podocyte homeostasis and protection against injury.This review will provide an overview of the immune functions of podocytes and their response to immune-mediated injury, focusing on the pathogenic link between complement and podocyte damage.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"10 1","pages":"3"},"PeriodicalIF":0.0,"publicationDate":"2023-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10104987/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9364713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Caroline M Kolvenbach, Gabriel C Dworschak, Johanna M Rieke, Adrian S Woolf, Heiko Reutter, Benjamin Odermatt, Alina C Hilger
{"title":"Modelling human lower urinary tract malformations in zebrafish.","authors":"Caroline M Kolvenbach, Gabriel C Dworschak, Johanna M Rieke, Adrian S Woolf, Heiko Reutter, Benjamin Odermatt, Alina C Hilger","doi":"10.1186/s40348-023-00156-4","DOIUrl":"10.1186/s40348-023-00156-4","url":null,"abstract":"<p><p>Advances in molecular biology are improving our understanding of the genetic causes underlying human congenital lower urinary tract (i.e., bladder and urethral) malformations. This has recently led to the identification of the first disease-causing variants in the gene BNC2 for isolated lower urinary tract anatomical obstruction (LUTO), and of WNT3 and SLC20A1 as genes implicated in the pathogenesis of the group of conditions called bladder-exstrophy-epispadias complex (BEEC). Implicating candidate genes from human genetic data requires evidence of their influence on lower urinary tract development and evidence of the found genetic variants' pathogenicity. The zebrafish (Danio rerio) has many advantages for use as a vertebrate model organism for the lower urinary tract. Rapid reproduction with numerous offspring, comparable anatomical kidney and lower urinary tract homology, and easy genetic manipulability by Morpholino®-based knockdown or CRISPR/Cas editing are among its advantages. In addition, established marker staining for well-known molecules involved in urinary tract development using whole-mount in situ hybridization (WISH) and the usage of transgenic lines expressing fluorescent protein under a tissue-specific promoter allow easy visualization of phenotypic abnormalities of genetically modified zebrafish. Assays to examine the functionality of the excretory organs can also be modeled in vivo with the zebrafish. The approach of using these multiple techniques in zebrafish not only enables rapid and efficient investigation of candidate genes for lower urinary tract malformations derived from human data, but also cautiously allows transferability of causality from a non-mammalian vertebrate to humans.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"10 1","pages":"2"},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10050536/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9565191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Katarzyna Gendera, Stanimir Georgiev, Peter Ewert, Stefan Eckstein, Christoph Fusch, Niels Rochow
{"title":"Umbilical catheter placement aided by coronary guidewires.","authors":"Katarzyna Gendera, Stanimir Georgiev, Peter Ewert, Stefan Eckstein, Christoph Fusch, Niels Rochow","doi":"10.1186/s40348-023-00155-5","DOIUrl":"https://doi.org/10.1186/s40348-023-00155-5","url":null,"abstract":"<p><p>Catheterization of the umbilical vessels has proven to be an effective and relatively rapid method for gaining central vascular access in neonates. However, it can be technically difficult, the procedure may last 30 min or longer, and it can be associated with complications in some patients. We suggest using a coronary guidewire during catheterization of umbilical vessels to support the placement of umbilical catheters and significantly reduce a risk for complications. We tested the proposed technique in 6 successful ex vivo bench tests of catheterization of the umbilical vessels in stillborn piglets immediately after birth. We are confident that using coronary guidewire as a guiding tool during catheterization of the umbilical vessels is a rapid and safe method. We expect that it allows to obtain a vascular access with lower risk for dangerous procedural complications, which could be a lifesaving in critically ill patients. However, the approach needs to be validated in a comparative study in neonates.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"10 1","pages":"1"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10011353/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9120997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Meinrad Beer, Björn Schönnagel, Jochen Herrmann, Steffen Klömpken, Matthias Schaal, Michael Kaestner, Christian Apitz, Horst Brunner
{"title":"Non-invasive pediatric cardiac imaging-current status and further perspectives.","authors":"Meinrad Beer, Björn Schönnagel, Jochen Herrmann, Steffen Klömpken, Matthias Schaal, Michael Kaestner, Christian Apitz, Horst Brunner","doi":"10.1186/s40348-022-00153-z","DOIUrl":"https://doi.org/10.1186/s40348-022-00153-z","url":null,"abstract":"<p><strong>Background: </strong>Non-invasive cardiac imaging has a growing role in diagnosis, differential diagnosis, therapy planning, and follow-up in children and adolescents with congenital and acquired cardiac diseases. This review is based on a systematic analysis of international peer-reviewed articles and additionally presents own clinical experiences. It provides an overview of technical advances, emerging clinical applications, and the aspect of artificial intelligence.</p><p><strong>Main body: </strong>The main imaging modalities are echocardiography, CT, and MRI. For echocardiography, strain imaging allows a novel non-invasive assessment of tissue integrity, 3D imaging rapid holistic overviews of anatomy. Fast cardiac CT imaging new techniques-especially for coronary assessment as the main clinical indication-have significantly improved spatial and temporal resolution in adjunct with a major reduction in ionizing dose. For cardiac MRI, assessment of tissue integrity even without contrast agent application by mapping sequences is a major technical breakthrough. Fetal cardiac MRI is an emerging technology, which allows structural and functional assessment of fetal hearts including even 4D flow analyses. Last but not least, artificial intelligence will play an important role for improvements of data acquisition and interpretation in the near future.</p><p><strong>Conclusion: </strong>Non-invasive cardiac imaging plays an integral part in the workup of children with heart disease. In recent years, its main application congenital heart disease has been widened for acquired cardiac diseases.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"9 1","pages":"21"},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9794482/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10449661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Paola Mian, Mathieu S Bolhuis, J Marina Maurer, Margriet van Stuijvenberg
{"title":"Adsorption of insulin onto neonatal infusion sets: should intravenous administration of insulin to treat hyperglycemia in preterm babies on the NICU be proceeded by priming of the intravenous system, adding of albumin, or non-priming to get to a stable insulin dose?","authors":"Paola Mian, Mathieu S Bolhuis, J Marina Maurer, Margriet van Stuijvenberg","doi":"10.1186/s40348-022-00154-y","DOIUrl":"https://doi.org/10.1186/s40348-022-00154-y","url":null,"abstract":"<p><p>Insulin is used to treat neonatal hyperglycaemia when blood glucose concentrations are consistently high, and to treat neonatal diabetes. Within this brief report, a review of the existing literature is conducted to determine if intravenous administration of insulin should be proceeded by priming of the intravenous system, adding of albumin, or non-priming to get a stable insulin dose. Within this literature search, we focused on experimental insulin adsorption data (in vitro studies).</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"9 1","pages":"20"},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9772363/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10540041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sahar Sabour, Amir Teimourpour, Jafar Mohammadshahi, Hadi Peeridogaheh, Roghayeh Teimourpour, Taher Azimi, Zahra Hosseinali
{"title":"Molecular detection and characterization of Shigella spp. harboring extended-spectrum β-lactamase genes in children with diarrhea in northwest Iran.","authors":"Sahar Sabour, Amir Teimourpour, Jafar Mohammadshahi, Hadi Peeridogaheh, Roghayeh Teimourpour, Taher Azimi, Zahra Hosseinali","doi":"10.1186/s40348-022-00152-0","DOIUrl":"https://doi.org/10.1186/s40348-022-00152-0","url":null,"abstract":"<p><p>Shigellosis is one of the acute bowel infections and remains a serious public health problem in resource-poor countries. The present study aimed to survey the distribution of extended-spectrum β-lactamase (ESBL)-producing Shigella strains isolated from patients with diarrhea in northwest Iran. In the present cross-sectional study, from January 2019 to December 2020, 1280 fecal samples were collected from children with diarrhea in Ardabil, Iran. Multiplex PCR assay was applied for the presence of ipaH, invC, wbgZ, rfpB, and rfc genes to detect Shigella spp., Shigella sonnei, Shigella dysenteriae, Shigella flexneri, and Shigella boydii, respectively. Phenotypic detection of ESBL-producing isolates was carried out using the Double Disc Test (DDT). The frequency of main ESBL encoding genes including bla<sub>CTX-M</sub>, bla<sub>SHV</sub>, and bla<sub>TEM</sub> was detected using multiplex PCR. The genetic similarity of S. sonnei isolates was determined using ERIC PCR. A total of 49 Shigella isolates (3.8%; 49/1280) including 42 (85.7%) S. sonnei, 5 (10.2%) S. flexneri, and 2 (4%) S. dysenteriae were identified. S. boydii was not detected in any fecal samples. ESBLs were produced by 10.2% of Shigella spp. including 3 S. sonnei, 1 S. flexneri, and 1 S. dysenteriae. The ESBL encoding genes include bla<sub>CTX-M</sub> and bla<sub>TEM</sub> found in 65.3% and 61.2% of isolates, respectively. bla<sub>SHV</sub> gene was not detected in any isolates. The ERIC-PCR profiles allowed the differentiation of 42 S. sonnei strains into 6 clusters. Our study revealed a high frequency of ESBL-encoding genes among Shigella spp. in northwest Iran. The high prevalence of S. sonnei harboring ESBL genes, in the present work, is the main challenge for dysentery treatment, and this concern justifies the need for effective and regular monitoring of antibiotic usage among patients.</p>","PeriodicalId":74215,"journal":{"name":"Molecular and cellular pediatrics","volume":"9 1","pages":"19"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9732178/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10537958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}