Chloe G Shaw, Christina Pavloudi, Megan A Barela Hudgell, Ryley S Crow, Jimmy H Saw, R Alexander Pyron, L Courtney Smith
{"title":"Bald sea urchin disease shifts the surface microbiome on purple sea urchins in an aquarium.","authors":"Chloe G Shaw, Christina Pavloudi, Megan A Barela Hudgell, Ryley S Crow, Jimmy H Saw, R Alexander Pyron, L Courtney Smith","doi":"10.1093/femspd/ftad025","DOIUrl":"10.1093/femspd/ftad025","url":null,"abstract":"<p><p>Bald sea urchin disease (BSUD) is most likely a bacterial infection that occurs in a wide range of sea urchin species and causes the loss of surface appendages. The disease has a variety of additional symptoms, which may be the result of the many bacteria that are associated with BSUD. Previous studies have investigated causative agents of BSUD, however, there are few reports on the surface microbiome associated with the infection. Here, we report changes to the surface microbiome on purple sea urchins in a closed marine aquarium that contracted and then recovered from BSUD in addition to the microbiome of healthy sea urchins in a separate aquarium. 16S rRNA gene sequencing shows that microhabitats of different aquaria are characterized by different microbial compositions, and that diseased, recovered, and healthy sea urchins have distinct microbial compositions, which indicates that there is a correlation between microbial shifts and recovery from disease.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10550250/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10253787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Uncovering the role of microRNA671-5p/CDCA7L/monoamine oxidase-A signaling in Helicobacter pylori mediated apoptosis in gastric epithelial cells.","authors":"Thurbu Tshering Lepcha, Manish Kumar, Arun Kumar Sharma, Soumya Mal, Debayan Majumder, Kuladip Jana, Joyoti Basu, Manikuntala Kundu","doi":"10.1093/femspd/ftad006","DOIUrl":"https://doi.org/10.1093/femspd/ftad006","url":null,"abstract":"<p><p>Helicobacter pylori is a gram-negative microaerophilic bacterium and is associated with gastrointestinal diseases ranging from peptic ulcer and gastritis to gastric cancer and mucosa-associated lymphoid tissue lymphoma. In our laboratory, the transcriptomes and miRnomes of AGS cells infected with H. pylori have been profiled, and an miRNA-mRNA network has been constructed. MicroRNA 671-5p is upregulated during H. pylori infection of AGS cells or of mice. In this study, the role of miR-671-5p during infection has been investigated. It has been validated that miR-671-5p targets the transcriptional repressor CDCA7L, which is downregulated during infection (in vitro and in vivo) concomitant with miR-671-5p upregulation. Further, it has been established that the expression of monoamine oxidase A (MAO-A) is repressed by CDCA7L, and that MAO-A triggers the generation of reactive oxygen species (ROS). Consequently, miR-671-5p/CDCA7L signaling is linked to the generation of ROS during H. pylori infection. Finally, it has been demonstrated that ROS-mediated caspase 3 activation and apoptosis that occurs during H. pylori infection, is dependent on the miR-671-5p/CDCA7L/MAO-A axis. Based on the above reports, it is suggested that targeting miR-671-5p could offer a means of regulating the course and consequences of H. pylori infection.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9466067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wanhai Qin, Anno Saris, Cornelis van 't Veer, Joris J T H Roelofs, Brendon P Scicluna, Alex F de Vos, Tom van der Poll
{"title":"Myeloid miR-155 plays a limited role in antibacterial defense during Klebsiella-derived pneumosepsis and is dispensable for lipopolysaccharide- or Klebsiella-induced inflammation in mice.","authors":"Wanhai Qin, Anno Saris, Cornelis van 't Veer, Joris J T H Roelofs, Brendon P Scicluna, Alex F de Vos, Tom van der Poll","doi":"10.1093/femspd/ftad031","DOIUrl":"10.1093/femspd/ftad031","url":null,"abstract":"<p><p>MicroRNA-155 (miR-155) plays a crucial role in regulating host inflammatory responses during bacterial infection. Previous studies have shown that constitutive miR-155 deficiency alleviates inflammation while having varying effects in different bacterial infection models. However, whether miR-155 in myeloid cells is involved in the regulation of inflammatory and antibacterial responses is largely elusive. Mice with myeloid cell specific miR-155 deficiency were generated to study the in vitro response of bone marrow-derived macrophages (BMDMs), alveolar macrophages (AMs) and peritoneal macrophages (PMs) to lipopolysaccharide (LPS), and the in vivo response after intranasal or intraperitoneal challenge with LPS or infection with Klebsiella (K.) pneumoniae via the airways. MiR-155-deficient macrophages released less inflammatory cytokines than control macrophages upon stimulation with LPS in vitro. However, the in vivo inflammatory cytokine response to LPS or K. pneumoniae was not affected by myeloid miR-155 deficiency. Moreover, bacterial outgrowth in the lungs was not altered in myeloid miR-155-deficient mice, but Klebsiella loads in the liver of these mice were significantly higher than in control mice. These data argue against a major role for myeloid miR-155 in host inflammatory responses during LPS-induced inflammation and K. pneumoniae-induced pneumosepsis but suggest that myeloid miR-155 contributes to host defense against Klebsiella infection in the liver.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10636497/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49680819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kit Neikirk, Taylor Barongan, Tiffany Rolle, Edgar Garza Lopez, Andrea Marshall, Heather K Beasley, Amber Crabtree, Elsie C Spencer, Haysetta Shuler, Denise Martinez, Sandra Murray, Chia Vang, Felysha Jenkins, Steven Damo, Zer Vue
{"title":"Using quotients as a mentor to facilitate the success of underrepresented students.","authors":"Kit Neikirk, Taylor Barongan, Tiffany Rolle, Edgar Garza Lopez, Andrea Marshall, Heather K Beasley, Amber Crabtree, Elsie C Spencer, Haysetta Shuler, Denise Martinez, Sandra Murray, Chia Vang, Felysha Jenkins, Steven Damo, Zer Vue","doi":"10.1093/femspd/ftad008","DOIUrl":"10.1093/femspd/ftad008","url":null,"abstract":"<p><p>Choosing a mentor requires a certain level of introspection for both the mentor and the mentee. The dynamics of mentorship may change depending on the academic status of the mentee. Regardless, mentors should help their trainees grow both academically and professionally. The success of an individual in the fields of science, technology, engineering, mathematics, and medicine (STEMM) depends on more than intellectual capacity; a holistic view encompassing all factors that contribute to scientific achievement is all-important. Specifically, one new method scientists can adopt is quotients, which are scales and techniques that can be used to measure aptitude in a specific area. In this paper, we focus on these factors and how to grow one's adversity quotient (AQ), social quotient (SQ), and personal growth initiative scale (PGIS). We also look at how mentors can better understand the biases of their trainees. In addressing this, mentors can help trainees become more visible and encourage other trainees to become allies through reducing biases.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10255757/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9690815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tamar A Smith-Norowitz, Anastasiya Shulman, Haram Abdelmajid, Margaret R Hammerschlag, Rauno Joks, Diana Weaver, Stephan Kohlhoff
{"title":"Chlamydia pneumoniae-immunoglobulin E antibody responses in serum from children with asthma.","authors":"Tamar A Smith-Norowitz, Anastasiya Shulman, Haram Abdelmajid, Margaret R Hammerschlag, Rauno Joks, Diana Weaver, Stephan Kohlhoff","doi":"10.1093/femspd/ftad015","DOIUrl":"https://doi.org/10.1093/femspd/ftad015","url":null,"abstract":"<p><p>Chlamydia pneumoniae is an obligate intracellular bacterium that causes respiratory infections in humans. An association between persistent C. pneumoniae infection and asthma pathogenesis has been described. It is unknown whether specific immunoglobulin E (IgE) is a marker of persistent immune activation responses. Therefore, the association between C. pneumoniae-specific-IgE antibodies (Abs) and interferon (IFN)-gamma produced by C. pneumoniae-stimulated peripheral blood mononuclear cells (PBMC) was examined. Blood was collected and serum separated. PBMC from 63 children with or without stable asthma (N = 45 and 18, respectively) were infected or not infected with C. pneumoniae AR-39 and cultured for up to 7 days. Supernatants were collected, and IFN-gamma levels measured (ELISA). Serum C. pneumoniae-IgE Abs were detected by immunoblotting. C. pneumoniae-IgE Abs were detected in asthmatics (27%), compared with non-asthmatics (11%) (P = NS). IFN-gamma responses were more prevalent among asthmatics who had positive C. pneumoniae-IgE Abs (60%) compared with asthmatics without C. pneumoniae-IgE Abs (20%) (P = 0.1432). IFN-gamma responses in C. pneumoniae-stimulated PBMC from children with asthma were more frequent in children who had specific anti-C. pneumoniae-IgE Abs compared to those who did not. This immune response may reflect persistent infection, which may contribute to ongoing asthma symptoms.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9897881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Samuel Chenge, Harrison Ngure, Bernard N Kanoi, Amanda N Sferruzzi-Perri, Francis M Kobia
{"title":"Infectious and environmental placental insults: from underlying biological pathways to diagnostics and treatments.","authors":"Samuel Chenge, Harrison Ngure, Bernard N Kanoi, Amanda N Sferruzzi-Perri, Francis M Kobia","doi":"10.1093/femspd/ftad024","DOIUrl":"10.1093/femspd/ftad024","url":null,"abstract":"<p><p>Because the placenta is bathed in maternal blood, it is exposed to infectious agents and chemicals that may be present in the mother's circulation. Such exposures, which do not necessarily equate with transmission to the fetus, may primarily cause placental injury, thereby impairing placental function. Recent research has improved our understanding of the mechanisms by which some infectious agents are transmitted to the fetus, as well as the mechanisms underlying their impact on fetal outcomes. However, less is known about the impact of placental infection on placental structure and function, or the mechanisms underlying infection-driven placental pathogenesis. Moreover, recent studies indicate that noninfectious environmental agents accumulate in the placenta, but their impacts on placental function and fetal outcomes are unknown. Critically, diagnosing placental insults during pregnancy is very difficult and currently, this is possible only through postpartum placental examination. Here, with emphasis on humans, we discuss what is known about the impact of infectious and chemical agents on placental physiology and function, particularly in the absence of maternal-fetal transmission, and highlight knowledge gaps with potential implications for diagnosis and intervention against placental pathologies.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41155611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Epigenetic changes induced by pathogenic Chlamydia spp.","authors":"Richard A Stein, Lily M Thompson","doi":"10.1093/femspd/ftad034","DOIUrl":"10.1093/femspd/ftad034","url":null,"abstract":"<p><p>Chlamydia trachomatis, C. pneumoniae, and C. psittaci, the three Chlamydia species known to cause human disease, have been collectively linked to several pathologies, including conjunctivitis, trachoma, respiratory disease, acute and chronic urogenital infections and their complications, and psittacosis. In vitro, animal, and human studies also established additional correlations, such as between C. pneumoniae and atherosclerosis and between C. trachomatis and ovarian cancer. As part of their survival and pathogenesis strategies as obligate intracellular bacteria, Chlamydia spp. modulate all three major types of epigenetic changes, which include deoxyribonucleic acid (DNA) methylation, histone post-translational modifications, and microRNA-mediated gene silencing. Some of these epigenetic changes may be implicated in key aspects of pathogenesis, such as the ability of the Chlamydia spp. to induce epithelial-to-mesenchymal transition, interfere with DNA damage repair, suppress cholesterol efflux from infected macrophages, act as a co-factor in human papillomavirus (HPV)-mediated cervical cancer, prevent apoptosis, and preserve the integrity of mitochondrial networks in infected host cells. A better understanding of the individual and collective contribution of epigenetic changes to pathogenesis will enhance our knowledge about the biology of Chlamydia spp. and facilitate the development of novel therapies and biomarkers. Pathogenic Chlamydia spp. contribute to epigenetically-mediated gene expression changes in host cells by multiple mechanisms.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138461421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Miroslava Supolikova, Eva Novakova, Karin Donatova, Petra Olejnikova, Martina Labudova
{"title":"Murine herpesvirus-68-related growth factors treatment correlates with decrease of p53 and HIF-1α protein levels.","authors":"Miroslava Supolikova, Eva Novakova, Karin Donatova, Petra Olejnikova, Martina Labudova","doi":"10.1093/femspd/ftad004","DOIUrl":"https://doi.org/10.1093/femspd/ftad004","url":null,"abstract":"<p><p>Murine herpesvirus 68 (MHV-68) belongs to the subfamily Gammaherpesvirinae of the family Herpesviridae. This exceptional murine herpesvirus is an excellent model for the study of human gammaherpesvirus infections. Cells infected with MHV-68 under nonpermissive conditions for viral replication produce substances designated as MHV-68 growth factors (MHGF-68), that can cause transformation of the cells, or on the other side, turn transformed cells into normal. It was already proposed, that the MHGF-68 fractions cause transformation, disruption of the cytoskeleton and slower growth of the tumors in nude mice. Here, we examined newly extracted fractions of MHGF-68 designated as F5 and F8. Both fractions proved to inhibit the growth of the spheroids and also tumours induced in nude mice. What more, the fractions caused the decrease of the protein levels of wt p53 and HIF-1α. Decreased levels of p53 and HIF-1α activity leads to decreased vascularization, slower tumour growth, and lower adaptation to hypoxic conditions. This would propose MHGF-68 fractions, or their human herpesvirus equivalents, as a potential anticancer drugs in combined chemotherapy.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/f6/63/ftad004.PMC10093997.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9465929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Noushin Mashatan, Reza Heidari, Mana Altafi, Amir Amini, Mohammad Mehdi Ommati, Masoud Hashemzaei
{"title":"Probiotics in vaginal health.","authors":"Noushin Mashatan, Reza Heidari, Mana Altafi, Amir Amini, Mohammad Mehdi Ommati, Masoud Hashemzaei","doi":"10.1093/femspd/ftad012","DOIUrl":"10.1093/femspd/ftad012","url":null,"abstract":"<p><p>Bacterial vaginosis, a type of vaginal inflammation, can be considered the main reason for abnormal discharges of the vagina and vaginal dysbiosis during reproductive years. Epidemiological investigations of females suffering from vaginitis demonstrated that at least 30% to 50% of all women had Bacterial vaginosis (BV). One of the fields of treatment is the use of probiotics, probiotics are commonly defined as viable microorganisms (yeasts or bacteria) that can positively affect the health of their hosts. They are used in foods, notably fermented milk products, and medicine-related products. The development of new probiotic strains is aimed at more active advantageous organisms. Lactobacillus species are the dominant bacteria in a normal vagina that can decrease the pH of the vagina by the production of lactic acid. A number of lactobacilli types can produce hydrogen peroxide as well. The presence of hydrogen peroxide-induced low pH can prevent the growth of several other microorganisms. The vaginal flora of BV cases can modify by replacing the Lactobacillus species with a high density of anaerobic bacteria (i.e. Mobiluncus sp. Bacteroides sp.), Mycoplasma hominis, and Gardnerella vaginalis. More vaginal infections are treated with medications, while there is a possibility of recurrence and chronic infection because of the adverse effects on the indigenous lactobacilli. Probiotics and prebiotics have shown capacities for optimizing, maintaining, and restoring the vaginal microflora. Therefore, biotherapeutics can offer alternative approaches to reduce infections of the vagina and thus promote consumers' health.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9796881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jovana Simonetti Bulegon, Andressa de Azambuja Pias Weber, Manoela Dias de Souza, Fernanda Tibolla Viero, Micheli Mainardi Pillat, Thissiane de Lima Gonçalves
{"title":"Oxidative profile, inflammatory responses and δ-aminolevulinate dehydratase enzyme activity in influenza B virus infection.","authors":"Jovana Simonetti Bulegon, Andressa de Azambuja Pias Weber, Manoela Dias de Souza, Fernanda Tibolla Viero, Micheli Mainardi Pillat, Thissiane de Lima Gonçalves","doi":"10.1093/femspd/ftad028","DOIUrl":"10.1093/femspd/ftad028","url":null,"abstract":"<p><p>The aim of the current study was to determine the activity of the delta-aminolevulinate dehydratase (δ-ALA-D) enzyme, oxidative stress biomarkers and the expression of cytokines in those infected with influenza B virus (IBV). To evaluate the activity of the δ-ALA-D enzyme, lipid peroxidation was estimated as levels of thiobarbituric acid reactive substances, protein and non-protein thiol groups, ferric-reducing antioxidant power (FRAP), vitamin C concentration and cytokine levels in IBV-infected individuals (n = 50) and a control group (n = 30). δ-ALA-D activity was significantly lower in IBV-infected individuals compared with controls, as well as levels of thiols, vitamin C and FRAP. Lipid peroxidation and cytokine levels of IL-6, IL-10, IL-17A and IFN-y were statistically higher in the IBV group. In conclusion, we found evidence of the generation of oxidants, the depletion of the antioxidant system, decrease in the activity of the δ-ALA-D enzyme and an increase in the synthesis of cytokines, thus contributing to a better understanding of oxidative and inflammatory pathways during IBV infection.</p>","PeriodicalId":19795,"journal":{"name":"Pathogens and disease","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41208257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}