{"title":"Role of Gut Microbiota in Long COVID: Impact on Immune Function and Organ System Health.","authors":"Angelie Pathak, Devendra K Agrawal","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>SARS-CoV-2 infection has led to a range of long-lasting symptoms, collectively referred to as long COVID. Current research highlights the critical role of angiotensin-converting enzyme 2 (ACE2) in regulating gut microbiota diversity, vascular function, and homeostasis within the renin-angiotensin system (RAS). ACE2 is utilized by the SARS-CoV-2 virus to enter host cells, but its downregulation following infection contributes to gut microbiota dysbiosis and RAS disruption. These imbalances have been linked to a range of long COVID symptoms, including joint pain, chest pain, chronic cough, fatigue, brain fog, anxiety, depression, myalgia, peripheral neuropathy, memory difficulties, and impaired attention. This review investigates the dysregulation caused by SARS-CoV-2 infection and the long-term effects it has on various organ systems, including the musculoskeletal, neurological, renal, respiratory, and cardiovascular systems. We explored the bidirectional interactions between the gut microbiota, immune function, and these organ systems, focusing on how microbiota dysregulation contributes to the chronic inflammation and dysfunction observed in long COVID symptoms. Understanding these interactions is key for identifying effective therapeutic strategies and interventional targets aimed at mitigating the impact of long COVID on organ health and improving patient outcomes.</p>","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"9 1","pages":"38-53"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11883900/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143574857","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":"An In-Depth Insight into Clinical, Cellular and Molecular Factors in COVID19-Associated Cardiovascular Ailments for Identifying Novel Disease Biomarkers, Drug Targets and Clinical Management Strategies.","authors":"Muneera AlTaweel, Abdulmohsen Almusaad, Gousay Alkhazmari, Hussain Alrowaily, Maram Alsubaiee, Mareyah Alshaikh Husain, Nouf Alomayrin, Rafyel Almuaiweed, Norah Aleid, Abdulrahman A Alarfaj, Zainab Albahrani, Yaqob Taleb, Aftab A Jalbani, Sarah Almukhaylid, Ayman Soliman, Zafar Iqbal","doi":"10.26502/ami.936500177","DOIUrl":"10.26502/ami.936500177","url":null,"abstract":"<p><p>COVID-19 was initially identified as a respiratory system disorder, but it has been reported to interact with and influence the cardiovascular system, in addition to many other body systems. Although COVID-19-associated cardiovascular (CV) complications are common, resulting in high acute phase mortality and a large number of morbidities in the chronic phase, thus severely impacting patients' quality of life and health outcomes, yet clinical, cellular, and molecular biological factors underlying the pathophysiology of cardiovascular complications associated with COVID-19 are poorly understood. This review investigates putative underlying clinical factors as well as cellular and molecular biological mechanisms by which COVID-19 leads to acute CV complications, including state-of-the-art genomic sequencing-based findings, and assessing the long-term CV consequences of COVID-19, aiming to shed light on developing strategies for differential diagnosis, risk prognostic stratification, prevention, and clinical management of CV sequels in COVID-19 patients. We found that the relationship between COVID-19 and CV risk is complex and multifaceted. Intriguingly, in addition to acute COVID-19 detertriuos effects, COVID-19 survivors may experience long-term CV effects as well that may have long-lasting clinical consequences. Here in this article, we provide a detailed account of a large number of genomic alterations, microRNAs, and novel viral as well as host proteins in CVDs associated with COVID-19, which has helped identify some novel drug targets to treat COVID-19-related cardiovascular complications.</p>","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"8 3","pages":"290-308"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11658003/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866528","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}
Farigol Hakem Zadeh, Daniel R Wilson, Devendra K Agrawal
{"title":"Long COVID: Complications, Underlying Mechanisms, and Treatment Strategies.","authors":"Farigol Hakem Zadeh, Daniel R Wilson, Devendra K Agrawal","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Long Covid is one of the most prevalent and puzzling conditions that arose with the Covid pandemic. Covid-19 infection generally resolves within several weeks but some experience new or lingering symptoms. Though there is no formal definition for such lingering symptoms the CDC boadly describes long Covid as persons having a wide range of new, recurring or sustained health issues four or more weeks after first being infected with SARS-CoV2. The WHO defines <i>long Covid</i> as the manifestation of symptoms from a \"probable or confirmed\" Covid-19 infection that start approximately 3 months after the onset of the acute infection and last for more than 2 months. Numerous studies have looked at the implications of long Covid on various organs. Many specific mechanisms have been proposed for such changes. In this article, we provide an overview of some of the main mechanisms by which long Covid induces end-organ damage proposed in recent research studies. We also review various treatment options, current clinical trials, and other potential therapeutic avenues to control long Covid followed by the information about the effect of vaccination on long Covid. Lastly, we discuss some of the questions and knowledge gaps in the present understanding of long Covid. We believe more studies of the effects long Covid has on quality of life, future health and life expectancy are required to better understand and eventually prevent or treat the disease. We acknowledge the effects of long Covid are not limited to those in this article but as it may affect the health of future offspring and therefore, we deem it important to identify more prognostic and therapeutic targets to control this condition.</p>","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"7 2","pages":"36-61"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10310313/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9741855","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}
Marie Mas, Alexis Lacout, Véronique Perronne, Yannick Lequette, Yves Gadiolet, Béatrice Rambeaud, Paul Trouillas, Michel Franck, Christian Perronne
{"title":"Multi-Matrix Real Time PCR in 108 Patients with Polymorphic Signs Suggestive of Fibromyalgia or Related to A Tick Bite","authors":"Marie Mas, Alexis Lacout, Véronique Perronne, Yannick Lequette, Yves Gadiolet, Béatrice Rambeaud, Paul Trouillas, Michel Franck, Christian Perronne","doi":"10.26502/ami.936500124","DOIUrl":"https://doi.org/10.26502/ami.936500124","url":null,"abstract":"Introduction: Ticks are frequently polyinfected and can thus transmit numerous micro-organisms. A large number of bacteria, parasites and viruses are transmitted by tick bites and could cause different signs and symptoms in patients. The main goal of this study was to search for these numerous micro-organisms in patients presenting with persistent polymorphic syndrome possibly due to a tick bite.","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135504694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Distinguishing Swine Flu (H1N1) from COVID-19: Clinical, Virological, and Immunological Perspectives","authors":"Irene Batta, Tejinder Kaur, Devendra K. Agrawal","doi":"10.26502/ami.936500125","DOIUrl":"https://doi.org/10.26502/ami.936500125","url":null,"abstract":"This article provides an in-depth examination on the differences between the influenza A strain, H1N1 (also called Swine Flu) and Covid-19 focusing on the immune response and clinical symptoms. Flu symptoms due to influenza A strain, H1N1, were initially discovered in 2009. This variant of influenza A is believed to have emerged through reassortment, a process where the resulting virus inherits gene segments from each of its parental viruses. This reassortment event has resulted in a variant with altered characteristics, potentially affecting the level of immunity in humans. The symptoms of this strain typically manifest 1-4 days after exposure and include fever, cough, sore throat, runny/stuffy nose, body aches, fatigue, and gastrointestinal symptoms such as diarrhea. The transmission dynamics of this new variant, including human-to-human transmission, are still under investigation by health authorities. Individuals with weakened immune systems are generally more susceptible to severe illness. Risk factors associated with swine flu can include older adults, young children, pregnant women, and individuals with obesity. Historical variants of swine flu, such as the 2015 variant in India, have been associated with significant case numbers and deaths, often due to respiratory failure. Since the epidemic of Covid-19 due to SARS-CoV2 in early 2020, several symptoms of COVID-19 and swine flu overlap. In this article, we critically reviewed the differences and similarities in the immune response and clinical symptoms due to H1N1 virus and SARS-CoV2 in human.","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135506640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Moussa Djimde, Kassoum Kayentao, Charles Arama, Alassane Dicko, Petra F. Mens, Henk H.D.F. Schallig
{"title":"Neutrophils and Pregnancy-Associated Malaria","authors":"Moussa Djimde, Kassoum Kayentao, Charles Arama, Alassane Dicko, Petra F. Mens, Henk H.D.F. Schallig","doi":"10.26502/ami.936500119","DOIUrl":"https://doi.org/10.26502/ami.936500119","url":null,"abstract":"Purpose: Pregnant women living in areas with transmission of Plasmodium falciparum are exposed to malaria and its harmful consequences on pregnancy outcomes. Neutrophils are the most abundant white blood cells (WBC) in the bloodstream and are innate immune key effectors against infections. Substantial work has been done to study the role of neutrophils in malaria, but little on pregnancy-associated malaria (PAM). This review focuses on neutrophil responses to malaria during pregnancy that may help us to understand their dynamics and effects on pregnancy outcomes.","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135909183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of Antibody Responses of Vaccinated Persons with Coronavac","authors":"Aydin BALCI, Muhammed Emin DÜZ, Sibel Günay","doi":"10.26502/ami.936500122","DOIUrl":"https://doi.org/10.26502/ami.936500122","url":null,"abstract":"Introduction: Vaccination is the most efficient method available to combat the COVID-19 pandemic. However, vaccine production and logistics problems bring the dose-comparing approach to mind to protect the most people in the shortest time.","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135102255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hana M. Zegallai, Ejlal Abu-El-Rub, Grant M. Hatch
{"title":"Tafazzin Knockdown in Murine Mesenchymal Stem Cells Enhances the Tafazzin Knockdown Mediated Elevation in Interleukin-10 Secretion from Murine B Lymphocytes","authors":"Hana M. Zegallai, Ejlal Abu-El-Rub, Grant M. Hatch","doi":"10.26502/ami.936500111","DOIUrl":"https://doi.org/10.26502/ami.936500111","url":null,"abstract":"Barth Syndrome is a rare X-linked genetic disorder caused by mutations in the TAFAZZIN gene. We recently demonstrated that tafazzin (Taz) protein deficiency in murine mesenchymal stems (MSCs) reduces immune function of activated wild type (WT) B lymphocytes. Interleukin-10 (IL-10) is a key anti-inflammatory cytokine capable of exerting immunosuppressive effects on myeloid cells. Here we examined if Taz deficiency in murine MSCs altered proliferation and IL-10 production in Taz deficient lipopolysaccharide (LPS)-activated murine B lymphocytes. Bone marrow MSCs and splenic B lymphocytes were isolated from WT or Taz knockdown (TazKD) mice. WT or Taz deficient MSCs were co-cultured with either LPS-activated WT or LPS-activated Taz deficient B lymphocytes for 24 h and B cell proliferation and IL-10 production determined. Taz deficient MSCs exhibited increased phosphatidylinositol-3-kinase (PI3K) mRNA expression compared to WT MSCs indicative of enhanced immunosuppression. Co-culture of Taz deficient MSCs with Taz deficient LPS-activated B cells resulted in a greater reduction in proliferation of B cells compared to Taz deficient MSCs co-cultured with LPS-activated WT B cells. In addition, co-culture of Taz deficient MSCs with Taz deficient LPS-activated B cells resulted in an enhanced production of IL-10 compared to Taz deficient MSCs co-cultured with LPS-activated WT B cells. Thus, Taz deficiency in murine MSCs potentiates the Taz knockdown-mediated elevation in IL-10 secretion from LPS-activated Taz knockdown B lymphocytes. These data suggest that Taz deficient MSCs may modulate the activity of other Taz deficient immune cells potentially promoting an enhanced immunosuppressive state.","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136028698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael W Harr, Andrew Lavik, Karen McColl, Fei Zhong, Ben Haberer, Khadijah Aldabbagh, Vivien Yee, Clark W Distelhorst
{"title":"A Novel Peptide that Disrupts the Lck-IP<sub>3</sub>R Protein-Protein Interaction Induces Widespread Cell Death in Leukemia and Lymphoma.","authors":"Michael W Harr, Andrew Lavik, Karen McColl, Fei Zhong, Ben Haberer, Khadijah Aldabbagh, Vivien Yee, Clark W Distelhorst","doi":"10.26502/ami.936500114","DOIUrl":"10.26502/ami.936500114","url":null,"abstract":"<p><p>There is increasing evidence that the T-cell protein, Lck, is involved in the pathogenesis of chronic lymphocytic leukemia (CLL) as well as other leukemias and lymphomas. We previously discovered that Lck binds to domain 5 of inositol 1,4,5-trisphosphate receptors (IP<sub>3</sub>R) to regulate Ca<sup>2+</sup> homeostasis. Using bioinformatics, we targeted a region within domain 5 of IP<sub>3</sub>R-1 predicted to facilitate protein-protein interactions (PPIs). We generated a synthetic 21 amino acid peptide, KKRMDLVLELKNNASKLLLAI, which constitutes a domain 5 sub-domain (D5SD) of IP<sub>3</sub>R-1 that specifically binds Lck via its SH2 domain. With the addition of an HIV-TAT sequence to enable cell permeability of D5SD peptide, we observed wide-spread, Ca<sup>2+</sup>-dependent, cell killing of hematological cancer cells when the Lck-IP<sub>3</sub>R PPI was disrupted by TAT-D5SD. All cell lines and primary cells were sensitive to D5SD peptide, but malignant T-cells were less sensitive compared with B-cell or myeloid malignancies. Mining of RNA-seq data showed that <i>LCK</i> was expressed in primary diffuse large B-cell lymphoma (DLBCL) as well as acute myeloid leukemia (AML). In fact, <i>LCK</i> shows a similar pattern of expression as many well-characterized AML oncogenes and is part of a protein interactome that includes FLT3-ITD, Notch-1, and Kit. Consistent with these findings, our data suggest that the Lck-IP<sub>3</sub>R PPI may protect malignant hematopoietic cells from death. Importantly, TAT-D5SD showed no cytotoxicity in three different non-hematopoietic cell lines; thus its ability to induce cell death appears specific to hematopoietic cells. Together, these data show that a peptide designed to disrupt the Lck-IP<sub>3</sub>R PPI has a wide range of pre-clinical activity in leukemia and lymphoma.</p>","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"7 3","pages":"165-177"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10569261/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41221615","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":"After Years of Medical Wandering, A Diagnosis of Chronic Babesiosis Saves A Patient","authors":"Alexis LACOUT, Ahed ZEDAN, Christian PERRONNE","doi":"10.26502/ami.936500123","DOIUrl":"https://doi.org/10.26502/ami.936500123","url":null,"abstract":"This is the case of a 36-year-old immunocompetent, non-splenectomized female patient presenting with a \"polymorphic persistent syndrome after a possible tick bite\" (SPPT), a syndrome officially recognized by the French High Authority for health (HAS). The patient’s syndrome combined major asthenia, neurological and cognitive disorders (concentration and memory difficulties) and polymorphic somatic signs (muscular, joint and neurological pain, night sweats, chills, etc.) which had been evolving for several years. Babesia serology and PCR were positive. After an initial exacerbation of symptoms, a combined treatment was spectacularly effective. The patient has now been in complete remission for several years","PeriodicalId":72285,"journal":{"name":"Archives of microbiology & immunology","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135504680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}