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Burgardt R, Lambert D, Heuwieser C, Sack M, Wagner G, Weinberg Z, Wachter A. Positioning of pyrimidine motifs around cassette exons defines their PTB-dependent splicing in Arabidopsis. Plant J 2024. [PMID: 38578875 DOI: 10.1111/tpj.16739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 03/14/2024] [Indexed: 04/07/2024]
Abstract
Alternative splicing (AS) is a complex process that generates transcript variants from a single pre-mRNA and is involved in numerous biological functions. Many RNA-binding proteins are known to regulate AS; however, little is known about the underlying mechanisms, especially outside the mammalian clade. Here, we show that polypyrimidine tract binding proteins (PTBs) from Arabidopsis thaliana regulate AS of cassette exons via pyrimidine (Py)-rich motifs close to the alternative splice sites. Mutational studies on three PTB-dependent cassette exon events revealed that only some of the Py motifs in this region are critical for AS. Moreover, in vitro binding of PTBs did not reflect a motif's impact on AS in vivo. Our mutational studies and bioinformatic investigation of all known PTB-regulated cassette exons from A. thaliana and human suggested that the binding position of PTBs relative to a cassette exon defines whether its inclusion or skipping is induced. Accordingly, exon skipping is associated with a higher frequency of Py stretches within the cassette exon, and in human also upstream of it, whereas exon inclusion is characterized by increased Py motif occurrence downstream of said exon. Enrichment of Py motifs downstream of PTB-activated 5' splice sites is also seen for PTB-dependent intron removal and alternative 5' splice site events from A. thaliana, suggesting this is a common step of exon definition. In conclusion, the position-dependent AS regulatory mechanism by PTB homologs has been conserved during the separate evolution of plants and mammals, while other critical features, in particular intron length, have considerably changed.
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Affiliation(s)
- Rica Burgardt
- Institute for Molecular Physiology (imP), University of Mainz, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany
| | - Dorothee Lambert
- Center for Plant Molecular Biology (ZMBP), University of Tübingen, Auf der Morgenstelle 32, 72076, Tübingen, Germany
| | - Christina Heuwieser
- Center for Plant Molecular Biology (ZMBP), University of Tübingen, Auf der Morgenstelle 32, 72076, Tübingen, Germany
| | - Maximilian Sack
- Bioinformatics Group, Department of Computer Science and Interdisciplinary Centre for Bioinformatics, Leipzig University, Härtelstraße 16-18, 04107, Leipzig, Germany
| | - Gabriele Wagner
- Center for Plant Molecular Biology (ZMBP), University of Tübingen, Auf der Morgenstelle 32, 72076, Tübingen, Germany
| | - Zasha Weinberg
- Bioinformatics Group, Department of Computer Science and Interdisciplinary Centre for Bioinformatics, Leipzig University, Härtelstraße 16-18, 04107, Leipzig, Germany
| | - Andreas Wachter
- Institute for Molecular Physiology (imP), University of Mainz, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany
- Center for Plant Molecular Biology (ZMBP), University of Tübingen, Auf der Morgenstelle 32, 72076, Tübingen, Germany
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Loeser J, Bauer J, Janßen K, Rockenbach K, Wachter A. A transient in planta editing assay identifies specific binding of the splicing regulator PTB as a prerequisite for cassette exon inclusion. Plant Mol Biol 2024; 114:22. [PMID: 38443687 PMCID: PMC10914923 DOI: 10.1007/s11103-024-01414-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/31/2023] [Indexed: 03/07/2024]
Abstract
The dynamic interaction of RNA-binding proteins (RBPs) with their target RNAs contributes to the diversity of ribonucleoprotein (RNP) complexes that are involved in a myriad of biological processes. Identifying the RNP components at high resolution and defining their interactions are key to understanding their regulation and function. Expressing fusions between an RBP of interest and an RNA editing enzyme can result in nucleobase changes in target RNAs, representing a recent addition to experimental approaches for profiling RBP/RNA interactions. Here, we have used the MS2 protein/RNA interaction to test four RNA editing proteins for their suitability to detect target RNAs of RBPs in planta. We have established a transient test system for fast and simple quantification of editing events and identified the hyperactive version of the catalytic domain of an adenosine deaminase (hADARcd) as the most suitable editing enzyme. Examining fusions between homologs of polypyrimidine tract binding proteins (PTBs) from Arabidopsis thaliana and hADARcd allowed determining target RNAs with high sensitivity and specificity. Moreover, almost complete editing of a splicing intermediate provided insight into the order of splicing reactions and PTB dependency of this particular splicing event. Addition of sequences for nuclear localisation of the fusion protein increased the editing efficiency, highlighting this approach's potential to identify RBP targets in a compartment-specific manner. Our studies have established the editing-based analysis of interactions between RBPs and their RNA targets in a fast and straightforward assay, offering a new system to study the intricate composition and functions of plant RNPs in vivo.
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Affiliation(s)
- Jorinde Loeser
- Institute for Molecular Physiology (imP), University of Mainz, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany
| | - Julia Bauer
- Institute for Molecular Physiology (imP), University of Mainz, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany
| | - Kim Janßen
- Institute for Molecular Physiology (imP), University of Mainz, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany
| | - Kevin Rockenbach
- Institute for Molecular Physiology (imP), University of Mainz, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany
| | - Andreas Wachter
- Institute for Molecular Physiology (imP), University of Mainz, Hanns-Dieter-Hüsch-Weg 17, 55128, Mainz, Germany.
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Zhang M, Liu Z, Zhu Y, Wu K, Zhou L, Peng Y, Pan J, Chen B, Wang X, Chen S. Associations of genetic variants within TYK2 with pulmonary tuberculosis among Chinese population. Mol Genet Genomic Med 2024; 12:e2386. [PMID: 38337161 PMCID: PMC10858315 DOI: 10.1002/mgg3.2386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/02/2024] [Accepted: 01/16/2024] [Indexed: 02/12/2024] Open
Abstract
BACKGROUND Pulmonary tuberculosis (PTB) is a common infectious disease caused by mycobacterium tuberculosis (MTB) and the present study aims to explore the associations of genetic variants within tyrosine kinases 2 (TYK2) with PTB incidence. METHODS A population-based case control study including 168 smear-positive PTB cases and 251 controls was conducted. Five single nucleotide polymorphisms (SNPs) including rs280520, rs91755, rs2304256, rs12720270, rs280519 located within TYK2 gene were selected and MassARRAY® MALDI-TOF system was employed for genotyping. SPSS 19.0 was adopted for statistical analysis, non-conditional logistic regression was conducted. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were computed to estimate their contributions to PTB incidence. RESULTS In the overall study population, rs91755 TT and rs280519 AA genotypes were found to be associated with reduced PTB risk (OR = 0.34, 95% CI: 0.16-0.72; OR = 0.38, 95% CI: 0.18-0.79, respectively). After stratification for sex, we found that among the male population, rs91755TG/TT, rs12720270AG/GG and rs280519AG/AA genotypes were associated with reduced PTB risk (OR = 0.41, 95% CI: 0.21-0.80; OR = 0.44, 95% CI: 0.21-0.94; OR = 0.42, 95% CI: 0.21-0.82, respectively). After stratification for age, we found that among those aged <60 years, rs91755TT and rs280519AA genotype were associated with reduced PTB risk (OR = 0.29, 95% CI: 0.09-0.90; OR = 0.34, 95% CI: 0.11-1.08, respectively); while rs2304256AC/AA genotype was associated with increased PTB risk (OR = 2.68, 95% CI: 1.05-6.85). Haplotype analysis revealed that AGAAG and ATCGA (Combined with rs280520, rs91755, rs2304256, rs12720270 and rs280519) were associated with increased (OR = 1.54, 95% CI: 1.01-2.37) and decreased PTB risk (OR = 0.70, 95% CI: 0.52-0.94), respectively. CONCLUSIONS The genetic variants located within TYK2 including rs91755, rs12720270 and rs280519 were found to be associated with modified PTB risk and the SNPs had potential to be the biomarkers to predict PTB incidence risk.
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Affiliation(s)
- Mingwu Zhang
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Zhengwei Liu
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Yelei Zhu
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Kunyang Wu
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Lin Zhou
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Ying Peng
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Junhang Pan
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Bin Chen
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Xiaomeng Wang
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
| | - Songhua Chen
- Tuberculosis Control and PreventionZhejiang Provincial Center for Disease Control and PreventionHangzhou CityChina
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Wang G, Zhang Z, Li J, Han J, Lu C. The PTB and PRR domains of numb regulate neurite outgrowth by influencing voltage-gated calcium channel expression and kinetics. Brain Res Bull 2024; 207:110876. [PMID: 38215950 DOI: 10.1016/j.brainresbull.2024.110876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/17/2023] [Accepted: 01/08/2024] [Indexed: 01/14/2024]
Abstract
Numb is an evolutionarily conserved protein that regulates the differentiation of neuronal progenitor cells through unknown mechanisms. Numb has four alternative splice variants with different lengths of phosphotyrosine-binding (PTB) and proline-rich regions (PRR) domains. In this study, we demonstrated that Numb expression was increased in the primary cultures of rat cortical and hippocampal neurons over time in vitro, and Numb antisense inhibited neurite outgrowth. We verified that cells overexpressing short PTB (SPTB) or long PTB (LPTB) domains exhibited differentiation or proliferation, respectively. SPTB-mediated differentiation was related to the PRR domains, as cells expressing SPTB/LPRR had longer dendrites and more branched dendrites than cells expressing SPTB/SPRR. The differentiation of both cell types was completely blocked by the Ca2+ chelator. Western blot analysis revealed the increased total protein expression of voltage-gated calcium channel (VGCC) subunit α1C and α1D in cells expressing SPTB and LPTB Numb. The increased expression of the VGCC β3 subunit was only observed in cells expressing SPTB Numb. Immunocytochemistry further showed that SPTB-mediated cell differentiation was associated with increased membrane expression of VGCC subunits α1C, α1D and β3, which corresponded to the higher Ca2+ current (ICa) densities. Furthermore, we found that VGCC of cells transfected with SPTB/SPRR or SPTB/LPRR Numb isoforms exhibit steady-state inactivation (SSI) in both differentiated and undifferentiated phenotypes. A similar SSI of VGCC was observed in the differentiated cells transfected with SPTB/SPRR or SPTB/LPRR Numb isoforms, whereas a left shift SSI of VGCC in cells expressing SPTB/LPRR was detected in the undifferentiated cells. Collectively, these data indicate that SPTB domain is essential for neurite outgrowth involving in membrane expression of VGCC subunits, and LPRR plays a role in neuronal branching and the regulation of VGCC inactivation kinetics.
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Affiliation(s)
- Guodong Wang
- International-Joint Lab for Non-Invasive Neural Modulation of Henan Province, Department of Physiology and Pathophysiology, Xinxiang Medical University, Xinxiang 453003, China; School of Nursing, Xinxiang Medical University, Xinxiang 453003, China
| | - Zhengyan Zhang
- International-Joint Lab for Non-Invasive Neural Modulation of Henan Province, Department of Physiology and Pathophysiology, Xinxiang Medical University, Xinxiang 453003, China; The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang 453003, China
| | - Junmei Li
- International-Joint Lab for Non-Invasive Neural Modulation of Henan Province, Department of Physiology and Pathophysiology, Xinxiang Medical University, Xinxiang 453003, China
| | - Jinhong Han
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang 453003, China
| | - Chengbiao Lu
- International-Joint Lab for Non-Invasive Neural Modulation of Henan Province, Department of Physiology and Pathophysiology, Xinxiang Medical University, Xinxiang 453003, China.
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Casados-Delgado O, Avalos-Fuentes JA, Lara-Lozano M, Tovar-Medina G, Florán-Hernández CD, Martínez-Nolasco KG, Cortes H, Felix R, Segovia J, Florán B. Modulation of D 3R Splicing, Signaling, and Expression by D 1R through PKA→ PTB Phosphorylation. Biomedicines 2024; 12:206. [PMID: 38255311 PMCID: PMC10813448 DOI: 10.3390/biomedicines12010206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/11/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
The D1R and D3R receptors functionally and synergistically interact in striatonigral neurons. Dopaminergic denervation turns this interaction antagonistic, which is correlated with a decrement in D3nf isoform and an increment in D3R membranal expression. The mechanisms of such changes in D3R are attributed to the dysregulation of the expression of their isoforms. The cause and mechanism of this phenomenon remain unknown. Dopaminergic denervation produces a decrement in D1R and PKA activity; we propose that the lack of phosphorylation of PTB (regulator of alternative splicing) by PKA produces the dysregulation of D3R splicing and changes D3R functionality. By using in silico analysis, we found that D3R mRNA has motifs for PTB binding and, by RIP, co-precipitates with PTB. Moreover, D1R activation via PKA promotes PTB phosphorylation. Acute and 5-day D1R blockade decreases the expression of D3nf mRNA. The 5-day treatment reduces D3R, D3nf, and PTB protein in the cytoplasm and increases D3R in the membrane and PTB in the nucleus. Finally, the blockade of D1R mimics the effect of dopaminergic denervation in D1R and D3R signaling. Thus, our data indicate that through PKA→PTB, D1R modulates D3R splicing, expression, and signaling, which are altered during D1R blockade or the lack of stimulation in dopaminergic denervation.
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Affiliation(s)
- Orlando Casados-Delgado
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico; (O.C.-D.); (J.A.A.-F.); (M.L.-L.); (G.T.-M.); (C.D.F.-H.); (K.G.M.-N.); (J.S.)
| | - José Arturo Avalos-Fuentes
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico; (O.C.-D.); (J.A.A.-F.); (M.L.-L.); (G.T.-M.); (C.D.F.-H.); (K.G.M.-N.); (J.S.)
| | - Manuel Lara-Lozano
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico; (O.C.-D.); (J.A.A.-F.); (M.L.-L.); (G.T.-M.); (C.D.F.-H.); (K.G.M.-N.); (J.S.)
| | - Gisela Tovar-Medina
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico; (O.C.-D.); (J.A.A.-F.); (M.L.-L.); (G.T.-M.); (C.D.F.-H.); (K.G.M.-N.); (J.S.)
| | - Carla Daniela Florán-Hernández
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico; (O.C.-D.); (J.A.A.-F.); (M.L.-L.); (G.T.-M.); (C.D.F.-H.); (K.G.M.-N.); (J.S.)
| | - Karla Gisela Martínez-Nolasco
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico; (O.C.-D.); (J.A.A.-F.); (M.L.-L.); (G.T.-M.); (C.D.F.-H.); (K.G.M.-N.); (J.S.)
| | - Hernán Cortes
- Laboratorio de Medicina Genómica, Departamento de Genómica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico;
| | - Ricardo Felix
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico;
| | - José Segovia
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico; (O.C.-D.); (J.A.A.-F.); (M.L.-L.); (G.T.-M.); (C.D.F.-H.); (K.G.M.-N.); (J.S.)
| | - Benjamín Florán
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico; (O.C.-D.); (J.A.A.-F.); (M.L.-L.); (G.T.-M.); (C.D.F.-H.); (K.G.M.-N.); (J.S.)
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Paradkar MS, Pradhan NN, Balaji S, Gaikwad SN, Chavan A, Dharmashale SN, Sahasrabudhe T, Lokhande R, Deshmukh SA, Barthwal M, Atre S, Raskar SS, Sawant TU, Gupte AN, Kakrani A, Golub J, Padmapriyadarsini C, Gupta A, Gupte NA, Mave V. Early Microbiologic Markers of Pulmonary Tuberculosis Treatment Outcomes. Ann Am Thorac Soc 2023; 20:1760-1768. [PMID: 38038600 PMCID: PMC10704230 DOI: 10.1513/annalsats.202302-144oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 09/26/2023] [Indexed: 12/02/2023] Open
Abstract
Rationale: Earlier biomarkers of pulmonary tuberculosis (PTB) treatment outcomes are critical to monitor shortened anti-TB treatment (ATT). Objectives: To identify early microbiologic markers of unfavorable TB treatment outcomes. Methods: We performed a subanalysis of 2 prospective TB cohort studies conducted from 2013 to 2019 in India. We included participants aged ⩾18 years who initiated 6-month ATT for clinically or microbiologically diagnosed drug-sensitive PTB and completed at least one follow-up visit. Sputum specimens were subjected to a baseline Xpert Mycobacterium tuberculosis/rifampin (MTB/RIF) assay, acid-fast bacilli (AFB) microscopy and liquid and solid cultures, and serial AFB microscopy and liquid and solid cultures at weeks 2, 4, and 8. Poisson regression was used to assess the impact of available microbiologic markers (test positivity, smear grade, time to detection, and time to conversion) on a composite outcome of failure, recurrence, or death by 18 months after the end of treatment. Models were adjusted for age, sex, nutritional status, diabetes, smoking, alcohol consumption, and regimen type. Results: Among 1,098 eligible cases, there were 251 (22%) adverse TB treatment outcomes: 127 (51%) treatment failures, 73 (29%) recurrences, and 51 (20%) deaths. The primary outcome was independently associated with the Xpert MTB/RIF assay (medium-positive adjusted incidence rate ratio [aIRR], 1.91; 95% confidence interval [CI], 1.07-3.40; high-positive aIRR, 2.51; 95% CI, 1.41-4.46), positive AFB smear (aIRR, 1.48; 95% CI, 1.06-2.06), and positive liquid culture (aIRR, 1.98; 95% CI, 1.21-3.23) at baseline; Week 2 positive liquid culture (aIRR, 1.47; 95% CI, 1.04-2.09); and Week 8 positive AFB smear (aIRR, 1.63; 95% CI, 1.06-2.50) and positive liquid culture (aIRR, 1.54; 95% CI, 1.07-2.22). There was no evidence of Mycobacterium tuberculosis growth in the Mycobacterium Growth Indicator Tube at Week 4 conferring a higher risk of adverse outcomes (aIRR, 1.25; 95% CI, 0.89-1.75). Conclusions: Our analysis identifies Week 2 respiratory mycobacterial culture as the earliest microbiologic marker of unfavorable PTB treatment outcomes.
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Affiliation(s)
- Mandar Sudhir Paradkar
- BJ Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
| | - Neeta Nitin Pradhan
- BJ Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
| | | | | | - Amol Chavan
- BJ Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
| | | | | | | | - Sona Anil Deshmukh
- BJ Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
| | | | - Sachin Atre
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
- Department of Respiratory Medicine and
| | - Swapnil Suresh Raskar
- BJ Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
| | | | - Akshay N. Gupte
- Division of Infectious Diseases, School of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
- School of Public Health, Boston University, Boston, Massachusetts
| | - ArjunLal Kakrani
- Department of Medicine, Dr. D.Y. Patil Medical College, Hospital & Research Centre, Pune, India
| | - Jonathan Golub
- Division of Infectious Diseases, School of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | - Amita Gupta
- Division of Infectious Diseases, School of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Nikhil Anil Gupte
- BJ Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
- Division of Infectious Diseases, School of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Vidya Mave
- BJ Government Medical College-Johns Hopkins University Clinical Research Site, Pune, India
- Johns Hopkins Center for Infectious Diseases in India, Pune, India
- Division of Infectious Diseases, School of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
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7
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Gonzalez JM, Harris I, Jimenez Ramirez N, Myers D, Killion M, Thiet MP, Bianco K. Maternal cardiac disease and perinatal outcomes in a single tertiary care center. J Matern Fetal Neonatal Med 2023; 36:2223336. [PMID: 37369374 DOI: 10.1080/14767058.2023.2223336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/19/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
OBJECTIVE Maternal mortality in the U.S. has increased, with a substantial contribution from maternal cardiac disease. As a result of improved childhood survival, more women with congenital heart disease are reaching reproductive age leading to a growing high-risk obstetric population. We sought to determine the obstetrical and neonatal outcomes of women with maternal cardiac disease, including acquired cardiovascular disease and congenital heart disease. METHODS We studied a retrospective cohort study of women that delivered from 2008 to 2013 (N = 9026). Singleton pregnancies without preexisting conditions were established as the unexposed group for this study. Maternal and neonatal outcomes were compared between the unexposed group (N = 7277) and women exposed to maternal (acquired or congenital) cardiac disease (N = 139) as well as only congenital heart disease (N = 85). Statistical comparisons used univariate/multivariable logistic and linear regression analysis controlling for confounders with p < .05 and 95% confidence intervals indicating statistical significance. RESULTS Pregnancies complicated by maternal cardiac disease were associated with increased odds of preterm birth (<34 weeks, <37 weeks), intrauterine growth restriction (IUGR), need for assisted vaginal delivery, maternal ICU admission, and prolonged maternal hospitalization (>7 d). Neonatal outcomes including small for gestational age and Apgar score <7 at 5 min were increased in the pregnancies complicated by maternal cardiac disease. When pregnancies complicated by congenital heart disease were analyzed as a sub-group of the cohort, the results were similar. There were increased odds of preterm birth (<37 weeks), early-term delivery, need for assisted vaginal delivery, and prolonged hospitalization. Neonatal outcomes were only significant for small for gestational age. CONCLUSION We observed that in a select cohort of pregnancies complicated by maternal cardiac diseases (acquired or congenital), there were significant increases of adverse perinatal outcomes. Therefore, a multidisciplinary approach including maternal-fetal medicine specialists, cardiologists, obstetric anesthesia, and dedicated ancillary support is imperative for optimal care of this high-risk obstetrics population.
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Affiliation(s)
- Juan M Gonzalez
- Division of Maternal-Fetal Medicine and Perinatal Genetics, Department of Obstetrics and Gynecology, University of California San Francisco, San Francisco, CA, USA
| | - Ian Harris
- Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | | | - Dana Myers
- Division of Maternal-Fetal Medicine, Sutter West Bay Medical Group, San Francisco, CA, USA
| | - Molly Killion
- Division of Maternal-Fetal Medicine and Perinatal Genetics, Department of Obstetrics and Gynecology, University of California San Francisco, San Francisco, CA, USA
| | - Mari-Paule Thiet
- Division of Maternal-Fetal Medicine and Perinatal Genetics, Department of Obstetrics and Gynecology, University of California San Francisco, San Francisco, CA, USA
| | - Katherine Bianco
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Stanford University, Stanford, CA, USA
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Kondhare KR, Patil NS, Siddappa S, Banerjee AK, Hannapel DJ. Tandem Expression of a Mobile RNA and Its RNA-Binding Protein(s) Enhances Tuber Productivity in Potato. Int J Mol Sci 2023; 24:15754. [PMID: 37958738 PMCID: PMC10647900 DOI: 10.3390/ijms242115754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/07/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
A significant number of discoveries in past two decades have established the importance of long-distance signaling in controlling plant growth, development, and biotic and abiotic stress responses. Numerous mobile signals, such as mRNAs, proteins, including RNA-binding proteins, small RNAs, sugars, and phytohormones, are shown to regulate various agronomic traits such as flowering, fruit, seed development, and tuberization. Potato is a classic model tuber crop, and several mobile signals are known to govern tuber development. However, it is unknown if these mobile signals have any synergistic effects on potato crop improvement. Here, we employed a simple innovative strategy to test the cumulative effects of a key mobile RNA, StBEL5, and its RNA-binding proteins, StPTB1, and -6 on tuber productivity of two potato cultivars, Solanum tuberosum cv. Désirée and subspecies andigena, using a multi-gene stacking approach. In this approach, the coding sequences of StBEL5 and StPTB1/6 are driven by their respective native promoters to efficiently achieve targeted expression in phloem for monitoring tuber productivity. We demonstrate that this strategy resulted in earliness for tuberization and enhanced tuber productivity by 2-4 folds under growth chamber, greenhouse, and field conditions. This multi-gene stacking approach could be adopted to other crops, whose agronomic traits are governed by mobile macromolecules, expanding the possibilities to develop crops with improved traits and enhanced yields.
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Affiliation(s)
- Kirtikumar R. Kondhare
- Biology Division, Indian Institute of Science Education and Research (IISER), Homi Bhabha Road, Pune 411008, Maharashtra, India; (K.R.K.); (N.S.P.)
| | - Nikita S. Patil
- Biology Division, Indian Institute of Science Education and Research (IISER), Homi Bhabha Road, Pune 411008, Maharashtra, India; (K.R.K.); (N.S.P.)
| | - Sundaresha Siddappa
- Crop Improvement Division, Central Potato Research Institute (CPRI), Shimla 171001, Himachal Pradesh, India
| | - Anjan K. Banerjee
- Biology Division, Indian Institute of Science Education and Research (IISER), Homi Bhabha Road, Pune 411008, Maharashtra, India; (K.R.K.); (N.S.P.)
| | - David J. Hannapel
- Plant Biology Major, 253 Horticulture Hall, Iowa State University (ISU), Ames, IA 50011, USA
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Tan H. The use of cervical cerclage in asymptomatic twin pregnancies with cervical shortening or dilation: a twelve-year retrospective cohort study. BMC Pregnancy Childbirth 2023; 23:700. [PMID: 37773110 PMCID: PMC10540472 DOI: 10.1186/s12884-023-06013-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/20/2023] [Indexed: 09/30/2023] Open
Abstract
BACKGROUND To identify the effect and optimal time of cervical cerclage in asymptomatic twin pregnancies with cervical shortening or dilation. METHODS This observational retrospective study enrolled all women with asymptomatic twin pregnancies who were diagnosed with asymptomatic cervical shortening or dilation at the Second Affiliated Hospital of Wenzhou Medical University between 2010 and 2022. Women included were allocated into the cerclage group (n = 36) and the no cerclage group (n = 22). The cerclage group was further divided into the cerclage group (< 24 weeks group) and the cerclage group (24-28 weeks group) according to the time of cerclage. The no cerclage group was further divided into no cerclage group (< 24 weeks group) and no cerclage group (24-28 weeks group) according to the time of ultrasound-indicated or physical exam indicated cerclage. The rates of PTB < 24, 28, 32 and 34 weeks of gestation, maternal and neonatal outcomes were compared among the groups. RESULTS The gestational age (GA) at delivery was higher (P = 0.005) and the interval time between the presentation of the indicated cerclage and delivery was longer in the cerclage group (P < 0.001). The rates of PTB before 28, 32, and 34 weeks of gestation, caesarean section and stillbirth were lower in the cerclage group (P < 0.05). The birthweight of the twins was higher in the cerclage group (P = 0.012). Admissions to the NICU were more frequent in pregnancies with no cerclage (P = 0.008). Subgroup analysis showed that the interval time between the presentation and delivery was longer in the cerclage group (< 24 weeks) (P < 0.001). The GA at delivery and the birthweight of the twins were significantly higher in the cerclage group (< 24 weeks) (P < 0.001). No differences were found in the GA at presentation, the GA at delivery, the interval time between the presentation to delivery and birthweight between the cerclage group (24-28 weeks group) and the control group (24-28 weeks group) (P > 0.05). CONCLUSIONS Cerclage appears to prolong the GA at delivery and the interval time between the presentation to delivery, and may reduce the incidence of PTB before 28, 32 and 34 weeks of gestation and adverse perinatal outcomes in asymptomatic twin pregnancies with cervical shortening or dilation. Cerclage before 24 weeks of gestation showed longer GA at delivery, longer interval time between the presentation to delivery and higher birthweight of the twins. The GA at presentation, the GA at delivery, the interval time between the presentation to delivery and birthweight in women with cerclage at 24-28 weeks were similar to those in women without cerclage at 24-28 weeks.
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Affiliation(s)
- Hongying Tan
- Zhejiang College of Security Technology, 325027, Wenzhou, China.
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
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10
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Alifu X, Si S, Qiu Y, Cheng H, Huang Y, Chi P, Zhuang Y, Zhou H, Zhang L, Ainiwan D, Peng Z, Liu H, Yu Y. The Association of Vitamin D during Pregnancy and mRNA Expression Levels of Inflammatory Factors with Preterm Birth and Prelabor Rupture of Membranes. Nutrients 2023; 15:3423. [PMID: 37571360 PMCID: PMC10421124 DOI: 10.3390/nu15153423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
The aim of this study was to elucidate the association between vitamin D (VD) and the risk for preterm birth (PTB) and prelabor rupture of membranes (PROM). This study included two parts, with a cohort study and a case-control study. Plasma 25-hydroxyvitamin vitamin D [25(OH)D] levels in three trimesters in the cohort study and maternal 25(OH)D before delivery in the case-control study were measured. Quantitative real-time PCR was used to detect relative mRNA expression levels of the inflammatory factors associated with pyroptosis in peripheral blood mononuclear cell (PBMC), placenta and fetal membranes. Multinomial logistic regression and the Wilcoxon test were applied to analyze the associations. In the cohort study, 6381 pregnant women were included. We found that VD deficiency in T3 (PTB without PROM: OR = 1.90, 95% CI: 1.02-3.55, Term PROM (TPROM): OR = 0.76, 95% CI: 0.59-0.98) and less change of 25(OH)D between T1 and T3 (PTB without PROM: OR = 2.32, 95% CI: 1.07-5.06, TPROM: OR = 0.73, 95% CI: 0.56-0.96) were associated with the increased risk of PTB without PROM, while there was a decreased risk of TPROM. Neither VD, nor the increase of VD during pregnancy was associated with the premature rupture of membranes preterm delivery (PPROM). In the case-control study, there were no associations between VD during delivery and PTB or PROM (TPROM: OR = 1.33, 95% CI: 0.52-3.44); PTB without PROM: OR = 1.66, 95% CI: 0.33-8.19; PPROM: OR = 1.19, 95% CI: 0.42-3.40). The mRNA expression of NLRP1 (NOD-like receptor thermal protein domain associated protein 1) (p = 0.0165) in PBMC in the TPROM group was higher than that in the term group, and IL-18 (p = 0.0064) was lower than that in the term group. Plasma 25(OH)D in T3 and the increase of 25(OH)D between T1 and T3 were associated with a lower risk for PTB without PROM but a higher risk for TPROM. Further studies are warranted to clarify the association between VD and PTB and PROM and its mechanism.
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Affiliation(s)
- Xialidan Alifu
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Shuting Si
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Yiwu Maternity and Children Hospital, Yiwu 322000, China
| | - Yiwen Qiu
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Haoyue Cheng
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Ye Huang
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Peihan Chi
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Yan Zhuang
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Haibo Zhou
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Libi Zhang
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Diliyaer Ainiwan
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Zhicheng Peng
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Hui Liu
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China;
| | - Yunxian Yu
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; (X.A.); (S.S.); (Y.Q.); (H.C.); (Y.H.); (P.C.); (Y.Z.); (H.Z.); (L.Z.); (D.A.); (Z.P.)
- Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou 310058, China
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11
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Huang G, Yao D, Yan X, Zheng M, Yan P, Chen X, Wang D. Emerging role of toll-like receptors signaling and its regulators in preterm birth: a narrative review. Arch Gynecol Obstet 2023; 308:319-339. [PMID: 35916961 DOI: 10.1007/s00404-022-06701-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 07/03/2022] [Indexed: 11/02/2022]
Abstract
INTRODUCTION Despite intensive research, preterm birth (PTB) rates have not decreased significantly in recent years due to a lack of understanding of the underlying causes and insufficient treatment options for PTB. We are committed to finding promising biomarkers for the treatment of PTB. METHODS An extensive search of the literature was conducted with MEDLINE/PubMed, and in total, 151 studies were included and summarized in the present review. RESULTS Substantial evidence supports that the infection and/or inflammatory cascade associated with infection is an early event in PTB. Toll-like receptor (TLR) is a prominent pattern recognition receptor (PRR) found on both immune and non-immune cells, including fetal membrane cells. The activation of TLR downstream molecules, followed by TLR binding to its ligand, is critical for infection and inflammation, leading to the involvement of the TLR signaling pathway in PTB. TLR ligands are derived from microbial components and molecules released by damaged and dead cells. Particularly, TLR4 is an essential TLR because of its ability to recognize lipopolysaccharide (LPS). In this comprehensive overview, we discuss the role of TLR signaling in PTB, focus on numerous host-derived genetic and epigenetic regulators of the TLR signaling pathway, and cover ongoing research and prospective therapeutic options for treating PTB by inhibiting TLR signaling. CONCLUSION This is a critical topic because TLR-related molecules and mechanisms may enable obstetricians to better understand the physiological changes in PTB and develop new treatment and prevention strategies.
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Affiliation(s)
- Ge Huang
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Dan Yao
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaoli Yan
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Mingyu Zheng
- Department of Pharmacy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ping Yan
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaoxia Chen
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Dan Wang
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.
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12
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Mohd Hisham MF, Lodz NA, Muhammad EN, Asari FN, Mahmood MI, Abu Bakar Z. Evaluation of 2 Artificial Intelligence Software for Chest X-Ray Screening and Pulmonary Tuberculosis Diagnosis: Protocol for a Retrospective Case-Control Study. JMIR Res Protoc 2023; 12:e36121. [PMID: 37490330 PMCID: PMC10410533 DOI: 10.2196/36121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/08/2023] [Accepted: 02/25/2023] [Indexed: 02/27/2023] Open
Abstract
BACKGROUND According to the World Bank, Malaysia reported an estimated 97 tuberculosis cases per 100,000 people in 2021. Chest x-ray (CXR) remains the best conventional method for the early detection of pulmonary tuberculosis (PTB) infection. The intervention of artificial intelligence (AI) in PTB diagnosis could efficiently aid human interpreters and reduce health professionals' work burden. To date, no AI studies have been evaluated in Malaysia. OBJECTIVE This study aims to evaluate the performance of Putralytica and Qure.ai software for CXR screening and PTB diagnosis among the Malaysian population. METHODS We will conduct a retrospective case-control study at the Respiratory Medicine Institute, National Cancer Institute, and Sungai Buloh Health Clinic. A total of 1500 CXR images of patients who completed treatments or check-ups will be selected and categorized into three groups: (1) abnormal PTB cases, (2) abnormal non-PTB cases, and (3) normal cases. These CXR images, along with their clinical findings, will be the reference standard in this study. All patient data, including sociodemographic characteristics and clinical history, will be collected prior to screening via Putralytica and Qure.ai software and readers' interpretation, which are the index tests for this study. Interpretation from all 3 index tests will be compared with the reference standard, and significant statistical analysis will be computed. RESULTS Data collection is expected to commence in August 2023. It is anticipated that 1 year will be needed to conduct the study. CONCLUSIONS This study will measure the accuracy of Putralytica and Qure.ai software and whether their findings will concur with readers' interpretation and the reference standard, thus providing evidence toward the effectiveness of implementing AI in the medical setting. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) PRR1-10.2196/36121.
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Affiliation(s)
- Muhammad Faiz Mohd Hisham
- Institute for Public Health, National Institute of Health, Ministry of Health Malaysia, Shah Alam, Malaysia
| | - Noor Aliza Lodz
- Institute for Public Health, National Institute of Health, Ministry of Health Malaysia, Shah Alam, Malaysia
| | - Eida Nurhadzira Muhammad
- Institute for Public Health, National Institute of Health, Ministry of Health Malaysia, Shah Alam, Malaysia
| | - Filza Noor Asari
- Institute for Public Health, National Institute of Health, Ministry of Health Malaysia, Shah Alam, Malaysia
| | - Mohd Ihsani Mahmood
- Sector of Tuberculosis & Leprosy, Disease Control Division, Ministry of Health Malaysia, Putrajaya, Malaysia
| | - Zamzurina Abu Bakar
- Respiratory Medicine Institute, Ministry of Health Malaysia, Kuala Lumpur, Malaysia
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13
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Feduniw S, Pruc M, Ciebiera M, Zeber-Lubecka N, Massalska D, Zgliczynska M, Pawlowska A, Szarpak L. Biomarkers for Pregnancy Latency Prediction after Preterm Premature Rupture of Membranes-A Systematic Review. Int J Mol Sci 2023; 24:ijms24098027. [PMID: 37175733 PMCID: PMC10178250 DOI: 10.3390/ijms24098027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/26/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Preterm premature rupture of membranes, leading to preterm birth, is associated with neonatal and maternal morbidity and mortality. The study aimed to review the existing data on the best predictive value of pregnancy latency for known biomarkers in pregnancies after preterm premature rupture of membranes. The following databases were screened for the purposes of this systematic review: Pubmed/MEDLINE, Web of Science, EMBASE, Scopus, and the Cochrane Library. The study was conducted according to the PRISMA guidelines for systematic reviews. Only a few studies assessed biomarkers predicting pregnancy duration after PPROM. IL-6, IL-8, CRP, IL1RA, s-endoglin, βhCG, AFP, PCT, urea, creatinine, oxygen radical absorbance capacity, MDA, lipocalin-2, endotoxin activity, MMP-8, MMP-9 and S100 A8/A9 were found to have a positive predictive value for delivery timing prediction. Proinflammatory biomarkers, such as IL-6 or CRP, proved to be best correlated with delivery timing, independent of the occurrence of intrauterine infection.
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Affiliation(s)
- Stepan Feduniw
- Department of Gynecology, University Zürich, Frauenklinikstrasse 10, 8091 Zürich, Switzerland
| | - Michal Pruc
- Research Unit, Polish Society of Disaster Medicine, 05-806 Warsaw, Poland
- Department of Public Health, International Academy of Ecology and Medicine, 02091 Kyiv, Ukraine
| | - Michal Ciebiera
- Second Department of Obstetrics and Gynecology, Centre of Postgraduate Medical Education, Inflancka 6, 00-189 Warsaw, Poland
| | - Natalia Zeber-Lubecka
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, Roentgena 5, 02-781 Warsaw, Poland
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 00-001 Warsaw, Poland
| | - Diana Massalska
- Second Department of Obstetrics and Gynecology, Centre of Postgraduate Medical Education, Inflancka 6, 00-189 Warsaw, Poland
| | - Magdalena Zgliczynska
- Department of Obstetrics, Perinatology and Neonatology, Centre of Postgraduate Medical Education, 01-813 Warsaw, Poland
| | - Agnieszka Pawlowska
- Student Scientific Circle of Gynecology and Obstetrics "Żelazna", Warsaw Medical University, Żwirki i Wigury 61, 02-091 Warsaw, Poland
| | - Lukasz Szarpak
- Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX 77030, USA
- Institute of Outcomes Research, Maria Sklodowska-Curie Medical Academy, 00-136 Warsaw, Poland
- Research Institute, Maria Sklodowska-Curie Bialystok Oncology Center, 15-027 Bialystok, Poland
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14
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Falcon RMG, Alcazar RMU, Mondragon AV, Penserga EG, Tantengco OAG. Rheumatoid arthritis and the risk of preterm birth. Am J Reprod Immunol 2023; 89:e13661. [PMID: 36450344 DOI: 10.1111/aji.13661] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/25/2022] [Accepted: 11/21/2022] [Indexed: 12/02/2022] Open
Abstract
During pregnancy, many diseases are correlated with different adverse outcomes. In turn, pregnancy affects the body, leading to increased disease susceptibility. This interplay between diseased states and pregnancy outcomes is illustrated in the effect of the chronic autoimmune disorder, rheumatoid arthritis (RA), and the adverse outcome, preterm birth (PTB). RA is a systemic disorder characterized by inflammation of the joints and other body organs. Joint pain and swelling are the most prominent manifestations of RA during pregnancy. However, the exact role of RA on PTB among pregnant women has yet to be established. This review highlighted the immunologic mechanisms involved in PTB in pregnant patients with RA. The immune cell population in pregnant women with RA exhibited higher activity of macrophages, dendritic cells, neutrophils, helper T (Th) 1 cells, and Vδ1 cells, but lower activity of CD4 + CD25high T regulatory (CD24 + CD25high Treg ), Th2, and Vδ2 cells. Increased pro-inflammatory cytokines IL-6, TNF-α, and IFN-γ and decreased anti-inflammatory cytokines IL-12 and IL-10 are also exhibited by pregnant patients with RA. This review also discussed factors that may predict the risk of PTB in RA. These include disease activity and severity of RA, laboratory parameters (cytokines and immune cell population), and sociodemographic factors such as ethnicity, smoking, alcohol intake, and the level of education. Current findings on the underlying immunological mechanisms of RA can help identify possible strategies to prevent PTB.
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Affiliation(s)
| | | | - Alric V Mondragon
- Division of Allergy and Immunology, Department of Medicine, University of the Philippines-Philippine General Hospital, Manila, Philippines
| | - Ester G Penserga
- Division of Rheumatology, Department of Medicine, University of the Philippines-Philippine General Hospital, Manila, Philippines
| | - Ourlad Alzeus G Tantengco
- Career Incentive Program, Department of Science and Technology - Science Education Institute, Taguig, Philippines
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15
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Xiao Y, Huang S, Yu W, Ni Y, Lu D, Wu Q, Leng Q, Yang T, Ni M, Xie J, Zhang X. Effects of emergency/nonemergency cervical cerclage on the vaginal microbiome of pregnant women with cervical incompetence. Front Cell Infect Microbiol 2023; 13:1072960. [PMID: 36968117 PMCID: PMC10034410 DOI: 10.3389/fcimb.2023.1072960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 02/21/2023] [Indexed: 03/29/2023] Open
Abstract
Background Evaluation of the therapeutic effects of cerclage on preterm birth (PTB) caused by cervical incompetence remains challenging. The vaginal microbiome is associated with preterm births. Thus, this study aimed to analyse the vaginal microbiota of patients with cervical incompetence, explore the relationship between the composition of the vaginal microbiota before cervical cerclage and at term delivery, and assess the effect of cervical cerclage on the vaginal microbiota. Methods Patients (n = 30) underwent cerclage performed by the same surgical team. Vaginal swabs were obtained pre-surgery and seven days post-surgery. A gestational age-matched cohort of healthy pregnant women (n = 20) (no particular abnormality during pregnancy, delivery at term) was used as the control group and sampled during a comparable pregnancy. All collected vaginal swabs were analysed by 16S rRNA gene sequencing. Results When comparing the healthy control and cervical cerclage groups, the enriched microorganism in the healthy controls was G. Scardovia, and the enriched microorganism of the cerclage was G. Streptococcus. α diversity was significantly increased in patients who received cerclage with preterm delivery compared with those with full-term delivery, and the enriched microorganism was F. Enterococcus. A comparison before and after nonemergency cerclage suggested that the enriched microorganisms were G. Lactobacillus and F. Lactobacillaceae before surgery. After nonemergency cerclage, the enriched microorganisms were F. Enterobacteriaceae and C. Gammaproteobacteria. Vaginal microbiota diversity significantly increased, and the proportion of women with Lactobacillus spp.-depleted microbiomes increased after emergency cerclage. Significant differences in β diversity were found between the groups. Before the emergency cerclage, the enriched microorganisms were G. Lactobacillus, O. Alteromonadales, and P. Firmicutes. After emergency cerclage, the enriched microorganisms were P. Actinobacteria, C. Actinobacteria, P. Proteobacteria, F. Bifidobacteriaceae, O. Bifidobacteriales, G. Gardnerella, and G. Veillonella. Conclusion Cerclage (particularly emergency cerclage) may alter the vaginal microbiota by increasing microbiota diversity, decreasing vaginal Lactobacillus abundance, and increasing the abundance of pathogenic bacteria that are not conducive to pregnancy maintenance, thereby affecting surgical efficacy. Therefore, the role of the vaginal microbiome should be considered when developing treatment strategies for pregnant women with cervical incompetence. Clinical trial registration https://www.chictr.org.cn, identifier ChiCTR2100046305.
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Affiliation(s)
- Yunshan Xiao
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
- Xiamen Clinical Research Center for Perinatal Medicine, Xiamen, China
| | - Shiting Huang
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Weiwei Yu
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Yan Ni
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Danni Lu
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Quanfeng Wu
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Qin Leng
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Ting Yang
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Meilan Ni
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Jingxian Xie
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
| | - Xueqin Zhang
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
- Xiamen Key Laboratory of Basic and Clinical Research on Major Obstetrical Diseases, Xiamen, China
- Xiamen Clinical Research Center for Perinatal Medicine, Xiamen, China
- *Correspondence: Xueqin Zhang,
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16
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Yang J, Zhou J, Luo T, Xie Y, Wei Y, Mai H, Yang Y, Cui P, Ye L, Liang H, Huang J. Predicting pulmonary tuberculosis incidence in China using Baidu search index: an ARIMAX model approach. Environ Health Prev Med 2023; 28:68. [PMID: 37926526 PMCID: PMC10636285 DOI: 10.1265/ehpm.23-00141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 09/30/2023] [Indexed: 11/07/2023] Open
Abstract
BACKGROUND Existing researches have established a correlation between internet search data and the epidemics of numerous infectious diseases. This study aims to develop a prediction model to explore the relationship between the Pulmonary Tuberculosis (PTB) epidemic trend in China and the Baidu search index. METHODS Collect the number of new cases of PTB in China from January 2011 to August 2022. Use Spearman rank correlation and interaction analysis to identify Baidu keywords related to PTB and construct a PTB comprehensive search index. Evaluate the predictive performance of autoregressive integrated moving average (ARIMA) and ARIMA with explanatory variable (ARIMAX) models for the number of PTB cases. RESULTS Incidence of PTB had shown a fluctuating downward trend. The Spearman rank correlation coefficient between the PTB comprehensive search index and its incidence was 0.834 (P < 0.001). The ARIMA model had an AIC value of 2804.41, and the MAPE value was 13.19%. The ARIMAX model incorporating the Baidu index demonstrated an AIC value of 2761.58 and a MAPE value of 5.33%. CONCLUSIONS The ARIMAX model is superior to ARIMA in terms of fitting and predicting accuracy. Additionally, the use of Baidu Index has proven to be effective in predicting cases of PTB.
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Affiliation(s)
- Jing Yang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Jie Zhou
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Tingyan Luo
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Yulan Xie
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Yiru Wei
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Huanzhuo Mai
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Yuecong Yang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Ping Cui
- Life Science Institute, Guangxi Medical University, Nanning, China
| | - Li Ye
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
| | - Hao Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- Life Science Institute, Guangxi Medical University, Nanning, China
| | - Jiegang Huang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, Nanning, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning, China
- School of Public Health, Guangxi Medical University, Nanning, China
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17
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Tonne EO, Fosbøl MØ, Poulsen A, Nygaard U, Højgaard L, Borgwardt L. Imaging modalities for pulmonary tuberculosis in children: A systematic review. Eur J Radiol Open 2022; 10:100472. [PMID: 36624819 PMCID: PMC9823145 DOI: 10.1016/j.ejro.2022.100472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 12/20/2022] [Indexed: 12/31/2022] Open
Abstract
Purpose The optimal choice of protocol for diagnostic imaging in children with tuberculosis (TB) is a contemporary challenge due to the war in Ukraine, which potentially can create a steep rise in TB cases in Western Europe. We aimed to gather all primary research comparing imaging modalities and their diagnostic accuracies for pulmonary findings in children with suspected or confirmed pulmonary tuberculosis (PTB). Method We searched the databases PubMed and Embase using pre-specified search terms, for English- and non-English published and un-published reports from the period 1972 to 2022. We retrieved reports via citation search in excluded literature reviews and systematic reviews. Studies were eligible if most of the study population was between 0 and 18 years of age with confirmed or suspected PTB, and study participants had described diagnostic images from two or more different imaging modalities. Results A total of 15 studies investigated conventional chest X-Ray (CXR) and computed tomography (CT) in diagnosing PTB in children. Nine studies investigated the number of participants in where CT or CXR confirmed the diagnosis of TB, and all of them, including a total of 1244 patients, reported that findings compatible with TB were more frequently detected on CT than CXR. Only two studies did not include radiological findings as part of their diagnostic criteria for PTB, and combined they showed that CT diagnosed 54/54 (100 %) children with confirmed PTB, while CXR diagnosed 42/54 (78 %). Two studies compared magnetic resonance imaging (MRI) with CXR and showed that MRI diagnosed more children with PTB than CXR. One study reported a higher positive predictive value (PPV), sensitivity and specificity for PTB findings for MRI than CXR. One study compared CXR with high-kilovolt (high-kV) CXR, finding compatible sensitivity and specificity regarding confirmation of PTB. Two studies compared ultrasound (US) with CXR and found that US had a higher diagnostic yield and more often correctly identified consolidations, mediastinal LAP, and pleural effusion. Conclusion CT showed a higher diagnostic accuracy for PTB findings than CXR, MRI and US, and should be the imaging modality of first choice when available. MRI had a higher sensitivity and specificity than CXR for LAP, pleural effusion, and cavitation. US was complimentary in initial diagnostic work-up and follow up. A diagnostic strategy for PTB in children according to local availability and expertise is proposed, as no evidence from this systematic review shows otherwise, in acknowledgement of the expertise in high TB-burdened countries. CT can be performed when in doubt, due to the higher diagnostic yield.
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Key Words
- CT
- CT, computed tomography
- CXR, chest x-ray
- Child
- Diagnostic imaging
- EPTB, extrapulmonary tuberculosis
- LAP, lymphadenopathy
- MRI, magnetic resonance imaging
- NPV, negative predictive value
- PCR, polymerase chain reaction
- PET, positron emission tomography
- PPD, purified protein derivative
- PPV, positive predictive value
- PTB
- PTB, pulmonary tuberculosis
- Pulmonary tuberculosis
- Systematic review
- TB
- TB, tuberculosis
- TST, tuberculin skin test
- US, ultrasound
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Affiliation(s)
- Erle Opdahl Tonne
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, University of Copenhagen, Denmark
| | - Marie Øbro Fosbøl
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, University of Copenhagen, Denmark
- Department of Clinical Physiology and Nuclear Medicine, North Zealand Hospital, Hillerød, Denmark
| | - Anja Poulsen
- Global Health Unit, Department of Paediatrics and Adolescent Medicine, Rigshospitalet, University of Copenhagen, Denmark
- Department of Paediatrics and Adolescent Medicine, Rigshospitalet, University of Copenhagen, Denmark
| | - Ulrikka Nygaard
- Department of Paediatrics and Adolescent Medicine, Rigshospitalet, University of Copenhagen, Denmark
| | - Liselotte Højgaard
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, University of Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Lise Borgwardt
- Department of Clinical Physiology and Nuclear Medicine, Rigshospitalet, University of Copenhagen, Denmark
- Corresponding author.
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18
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Angulo J, Cáceres CJ, Contreras N, Fernández-García L, Chamond N, Ameur M, Sargueil B, López-Lastra M. Polypyrimidine-Tract-Binding Protein Isoforms Differentially Regulate the Hepatitis C Virus Internal Ribosome Entry Site. Viruses 2022; 15:8. [PMID: 36680049 PMCID: PMC9864772 DOI: 10.3390/v15010008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/03/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Translation initiation of the hepatitis C virus (HCV) mRNA depends on an internal ribosome entry site (IRES) that encompasses most of the 5'UTR and includes nucleotides of the core coding region. This study shows that the polypyrimidine-tract-binding protein (PTB), an RNA-binding protein with four RNA recognition motifs (RRMs), binds to the HCV 5'UTR, stimulating its IRES activity. There are three isoforms of PTB: PTB1, PTB2, and PTB4. Our results show that PTB1 and PTB4, but not PTB2, stimulate HCV IRES activity in HuH-7 and HEK293T cells. In HuH-7 cells, PTB1 promotes HCV IRES-mediated initiation more strongly than PTB4. Mutations in PTB1, PTB4, RRM1/RRM2, or RRM3/RRM4, which disrupt the RRM's ability to bind RNA, abrogated the protein's capacity to stimulate HCV IRES activity in HuH-7 cells. In HEK293T cells, PTB1 and PTB4 stimulate HCV IRES activity to similar levels. In HEK293T cells, mutations in RRM1/RRM2 did not impact PTB1's ability to promote HCV IRES activity; and mutations in PTB1 RRM3/RRM4 domains reduced, but did not abolish, the protein's capacity to stimulate HCV IRES activity. In HEK293T cells, mutations in PTB4 RRM1/RRM2 abrogated the protein's ability to promote HCV IRES activity, and mutations in RRM3/RRM4 have no impact on PTB4 ability to enhance HCV IRES activity. Therefore, PTB1 and PTB4 differentially stimulate the IRES activity in a cell type-specific manner. We conclude that PTB1 and PTB4, but not PTB2, act as IRES transacting factors of the HCV IRES.
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Affiliation(s)
- Jenniffer Angulo
- Laboratorio de Virología Molecular, Centro de Investigaciones Médicas, Instituto Milenio de Inmunología e Inmunoterapia, Departamento de Enfermedades Infecciosas e Inmunología Pediátrica, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
- Facultad de Odontología, Universidad Finis Terrae, Santiago 7501015, Chile
| | - C. Joaquín Cáceres
- Laboratorio de Virología Molecular, Centro de Investigaciones Médicas, Instituto Milenio de Inmunología e Inmunoterapia, Departamento de Enfermedades Infecciosas e Inmunología Pediátrica, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
- Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
| | - Nataly Contreras
- Laboratorio de Virología Molecular, Centro de Investigaciones Médicas, Instituto Milenio de Inmunología e Inmunoterapia, Departamento de Enfermedades Infecciosas e Inmunología Pediátrica, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
- Facultad de Medicina Veterinaria y Agronomía, Universidad de Las Américas, Santiago 7500975, Chile
| | - Leandro Fernández-García
- Laboratorio de Virología Molecular, Centro de Investigaciones Médicas, Instituto Milenio de Inmunología e Inmunoterapia, Departamento de Enfermedades Infecciosas e Inmunología Pediátrica, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
| | - Nathalie Chamond
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8038, Laboratoire CiTCoM, Université Paris Cité, 75006 Paris, France
| | - Melissa Ameur
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8038, Laboratoire CiTCoM, Université Paris Cité, 75006 Paris, France
| | - Bruno Sargueil
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8038, Laboratoire CiTCoM, Université Paris Cité, 75006 Paris, France
| | - Marcelo López-Lastra
- Laboratorio de Virología Molecular, Centro de Investigaciones Médicas, Instituto Milenio de Inmunología e Inmunoterapia, Departamento de Enfermedades Infecciosas e Inmunología Pediátrica, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile
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19
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Han Z, Wu Z, Gong W, Zhou W, Chen L, Li C. Allosteric mechanism for SL RNA recognition by polypyrimidine tract binding protein RRM1: An atomistic MD simulation and network-based study. Int J Biol Macromol 2022; 221:763-772. [PMID: 36058398 DOI: 10.1016/j.ijbiomac.2022.08.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/20/2022] [Accepted: 08/27/2022] [Indexed: 12/01/2022]
Abstract
Polypyrimidine tract-binding protein (PTB), an RNA-binding protein, is involved in the regulation of diverse processes in mRNA metabolism. However, the allosteric modulation of its binding with RNA remains unclear. We explore the dynamic characteristics of PTB RNA recognition motif 1 (RRM1) in its RNA-free and wild-type/mutant RNA-bound states to understand the issues using molecular dynamics (MD) simulation, perturbation response scanning (PRS) and protein structure network (PSN) models. It is found that RNA binding strengthens RRM1 stability, while L151G mutation in α3 helix far away from the interface makes the complex unstable. The latter is caused by long-distance dynamic couplings, which makes intermolecular electrostatic and entropy energies unfavorable. The weakened couplings between interface β sheets and C-terminal parts upon mutation reveal RNA recognition is co-regulated by these regions. Interestingly, PRS analysis reveals the allostery caused by the perturbation on α3 helix has already been pre-encoded in the equilibrium dynamics of the protein structure. PSN analysis shows the details of the allosteric signal transmission, revealing the necessity of strong couplings between α3 helix and interface for maintaining the high binding affinity. This study sheds light on the mechanisms of PTB allostery and RNA recognition and can provide important information for drug design.
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Affiliation(s)
- Zhongjie Han
- Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing 100124, China
| | - Zhixiang Wu
- Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing 100124, China
| | - Weikang Gong
- Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing 100124, China
| | - Wenxue Zhou
- Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing 100124, China
| | - Lei Chen
- Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing 100124, China
| | - Chunhua Li
- Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing 100124, China.
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20
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Wang X, Wang LL, Tian YK, Xiong SM, Liu YJ, Zhang HN, Shen XB, Zhou YZ. Association between exposures to phthalate metabolites and preterm birth and spontaneous preterm birth: A systematic review and meta-analysis. Reprod Toxicol 2022; 113:1-9. [PMID: 35907437 DOI: 10.1016/j.reprotox.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 07/17/2022] [Accepted: 07/23/2022] [Indexed: 11/25/2022]
Abstract
Emerging evidence from observational studies proves the association between preterm birth (PTB) and phthalate metabolites; however, such findings are inconsistent and inconclusive. This meta-analysis aimed to clarify this association by accessing the connection between 11 phthalate metabolites and PTB, and 6 phthalate metabolites and spontaneous PTB. The PubMed, Embase, and WOS (Web of Science) databases were searched up to July 2020. Seven prospective studies met the inclusion criteria. Pooled odds ratios (OR) with 95% confidence intervals (CIs) were calculated for risk estimation. Our results indicated that mono-n-butyl phthalate (MBP), sum of di-2-ethylhexyl phthalate (ΣDEHP), and mono 3- carboxypropyl phthalate (MCPP) significantly correlated with the risk of PTB (MBP: OR = 1.23, 95% CI = 1.05-1.45; ΣDEHP: OR = 1.21, 95% CI =1.01-1.44; MCPP: OR = 1.09, 95% CI = 1.00-1.19). Pooled results showed that spontaneous PTB was associated with higher urinary levels of mono-ethyl phthalate (MEP), MCPP, mono-isobutyl phthalate (MIBP), and MBP (MBP: OR = 1.27, 95% CI = 1.02-1.58; MEP: OR = 1.19, 95% CI = 1.01-1.40; MCPP: OR = 1.15, 95% CI = 1.02-1.30; MIBP: OR = 1.38, 95% CI = 1.12-1.71). Overall, we conclude that during pregnancy, MBP, ΣDEHP, and MCPP levels are associated positively with PTB. MBP, MEP, MCPP, and MIBP levels had increased odds of spontaneous PTB. No significant associations were observed between other phthalate metabolites and PTB or spontaneous PTB. Further research is needed to verify these findings and elucidate the association of phthalate levels and PTB.
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Affiliation(s)
- Xia Wang
- School of Public Health, Zunyi Medical University, Zunyi, China
| | - Ling-Lu Wang
- Obstetrics and Gynecology Department, Zunyi Medical University, Zunyi, China
| | - Ying-Kuan Tian
- School of Public Health, Zunyi Medical University, Zunyi, China
| | - Shi-Min Xiong
- School of Public Health, Zunyi Medical University, Zunyi, China
| | - Yi-Jun Liu
- School of Public Health, Zunyi Medical University, Zunyi, China
| | - Hao-Nan Zhang
- School of Public Health, Zunyi Medical University, Zunyi, China
| | - Xu-Bo Shen
- School of Public Health, Zunyi Medical University, Zunyi, China.
| | - Yuan-Zhong Zhou
- School of Public Health, Zunyi Medical University, Zunyi, China
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21
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Dai S, Wang C, Zhang C, Feng L, Zhang W, Zhou X, He Y, Xia X, Chen B, Song W. PTB: Not just a polypyrimidine tract-binding protein. J Cell Physiol 2022; 237:2357-2373. [PMID: 35288937 DOI: 10.1002/jcp.30716] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 01/21/2023]
Abstract
Polypyrimidine tract-binding protein (PTB), as a member of the heterogeneous nuclear ribonucleoprotein family, functions by rapidly shuttling between the nucleus and the cytoplasm. PTB is involved in the alternative splicing of pre-messenger RNA (mRNA) and almost all steps of mRNA metabolism. PTB regulation is organ-specific; brain- or muscle-specific microRNAs and long noncoding RNAs partially contribute to regulating PTB, thereby modulating many physiological and pathological processes, such as embryonic development, cell development, spermatogenesis, and neuron growth and differentiation. Previous studies have shown that PTB knockout can inhibit tumorigenesis and development. The knockout of PTB in glial cells can be reprogrammed into functional neurons, which shows great promise in the field of nerve regeneration but is controversial.
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Affiliation(s)
- Shirui Dai
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China.,Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Clinical Research Center of Ophthalmic Disease, Changsha, Hunan, P. R. China
| | - Chao Wang
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China
| | - Cheng Zhang
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China
| | - Lemeng Feng
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China
| | - Wulong Zhang
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China
| | - Xuezhi Zhou
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China
| | - Ye He
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China
| | - Xiaobo Xia
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China
| | - Baihua Chen
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Clinical Research Center of Ophthalmic Disease, Changsha, Hunan, P. R. China
| | - Weitao Song
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China.,Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, P. R. China
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22
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Kyagulanyi E, Mirembe J, Nantaayi B, Nalukenge S, Mukasa D, Tamale J, Oriekot A, Kamya MR, Baluku JB. The prevalence of concurrent pulmonary and extrapulmonary tuberculosis in Uganda: a retrospective study. Ther Adv Infect Dis 2022; 9:20499361221107304. [PMID: 35795170 PMCID: PMC9252008 DOI: 10.1177/20499361221107304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/25/2022] [Indexed: 12/03/2022] Open
Abstract
Background: Concurrent pulmonary tuberculosis (PTB) and extrapulmonary tuberculosis (EPTB) is associated with poor treatment outcomes yet its epidemiology in Uganda is unknown. The purpose of this study was to determine the prevalence, associated factors, and treatment outcomes of concurrent PTB and EPTB among patients at a national tuberculosis (TB) treatment center located at Mulago National Referral Hospital in Kampala, Uganda. Methods: We conducted a retrospective review of charts for people with TB who were enrolled in care between January 2015 and December 2019. Eligible charts were for people with pulmonary bacteriologically confirmed TB enrolled into care in the period under study. Concurrent PTB and EPTB was defined as PTB and bacteriological, histopathological, and/or radiological features of TB at another noncontiguous sites. Results: Overall, 400 patient charts were eligible, of whom 240 (60.0%) were aged 15–34 years and 205 (51.3%) were female. The prevalence of concurrent PTB and EPTB was 8.5% (34/400) [95% confidence interval (CI): 6.0–11.7%]. People with concurrent PTB and EPTB were more likely to have at least one comorbidity (82.4% versus 37.2%, p < 0.001), of which HIV was the most frequent. Furthermore, people with concurrent PTB and EPTB were more likely to have empyema (15% versus 2.6%, p = 0.028) but less likely to have bronchopneumonic opacification (0.0% versus 15.3%, p = 0.043) on chest x-ray imaging. People with concurrent PTB and EPTB had higher mortality (26.5% versus 6.37%) and a lower cure rate (41.2% versus 64.8%), p = 0.002. Conclusion: Our findings highlight the need for early detection of TB before dissemination particularly among people who use alcohol and people with HIV.
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Affiliation(s)
- Eddy Kyagulanyi
- School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Joy Mirembe
- School of Medicine, College of Health Sciences, Makerere University, PO. Box. 7072 Kampala, Uganda
| | - Brandy Nantaayi
- School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Sonita Nalukenge
- School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - David Mukasa
- Complex Diseases and Genome Epidemiology, Graduate School of Public Health, Seoul National University, Seoul, South Korea
| | - Jaffar Tamale
- School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Anthony Oriekot
- School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Moses R Kamya
- School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Joseph Baruch Baluku
- Kiruddu National Referral Hospital, Kampala, Uganda; Makerere University Lung Institute, Kampala, Uganda
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Hussein S, Ju W, Pizzella S, Flory M, Chu C, Wang Y, Zhong N. Reduced expression in preterm birth of sFLT-1 and PlGF with a high sFLT-1/PlGF ratio in extracellular vesicles suggests a potential biomarker. Front Endocrinol (Lausanne) 2022; 13:1024587. [PMID: 36619545 PMCID: PMC9814499 DOI: 10.3389/fendo.2022.1024587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
Preterm birth may have a pathological impact on intrauterine development of the fetal brain, resulting in developmental disabilities. In this study, we examine the expression of soluble Fms-like tyrosine kinase 1 (sFLT-1) and placental growth factor (PlGF), which is one of the vascular endothelial growth factors (VEGFs), as these play a key role in angiogenesis; in particular, we examine their effect on the sFLT-1/PlGF ratio in cases of preterm birth as compared to typical pregnancies. Enzyme-linked immunosorbent assay was performed on samples of maternal-derived plasma and extracellular vesicles-exosomes (EVs-EXs) isolated at the third trimester, consisting of 17 samples from cases of preterm birth and 38 control cases. Our results showed that both sFLT-1 (P=0.0014) and PlGF (P=0.0032) were significantly downregulated in cases of preterm birth compared to controls, while the sFLT-1/PIGF ratio was significantly (P=0.0008) increased in EVs-EXs, but not in maternal plasma. Our results suggest that this reduced expression of sFLT-1 and PlGF with an elevated sFLT-1/PlGF ratio in EVs-EXs may represent a potential biomarker for prediction of PTB.
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Affiliation(s)
- Sama Hussein
- New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, United States
| | - Weina Ju
- New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, United States
| | - Stephanie Pizzella
- Department of Obstetrics and Gynecology, School of Medicine, Washington University, St. Louis, MO, United States
| | - Michael Flory
- New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, United States
| | - Chu Chu
- New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, United States
| | - Yong Wang
- Department of Obstetrics and Gynecology, School of Medicine, Washington University, St. Louis, MO, United States
- *Correspondence: Nanbert Zhong, ; Yong Wang,
| | - Nanbert Zhong
- New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, United States
- *Correspondence: Nanbert Zhong, ; Yong Wang,
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Sharma A, Sharma A, Malhotra R, Singh P, Chakrabortty RK, Mahajan S, Pandit AK. An accurate artificial intelligence system for the detection of pulmonary and extra pulmonary Tuberculosis. Tuberculosis (Edinb) 2021; 131:102143. [PMID: 34794086 DOI: 10.1016/j.tube.2021.102143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 12/01/2022]
Abstract
Tuberculosis (TB) is the greatest irresistible illness in humans, caused by microbes Mycobacterium TB (MTB) bacteria and is an infectious disease that spreads from one individual to another through the air. It principally influences lung, which is termed Pulmonary TB (PTB). However, it can likewise influence other parts of the body such as the brain, bones and lymph nodes. Hence, it is also referred to as Extra Pulmonary TB (EPTB). TB has normal symptoms, so without proper testing, it is hard to detect if a patient has TB or not. In this paper, an accurate and novel system for diagnosing TB (PTB and EPTB) has been designed using image processing and AI-based classification techniques. The designed system is comprised of two phases. Firstly, the X-Ray image is processed using preprocessing, segmentation and features extraction and then, three different AI-based techniques are applied for classification. For image processing, 'Histogram Filter' and 'Median Filter' are applied with the CLAHE process to retrieve the segmented image. Then, classification based on AI techniques is done. The designed system produces the accuracy of 98%, 83%, and 89% for Decision Tree, SVM, and Naïve Bayes Classifier, respectively and has been validated by the doctors of the Jalandhar, India.
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Affiliation(s)
| | | | | | | | | | - Shubham Mahajan
- School of Electronics & Communication Engineering, Shri Mata Vaishno Devi University, Katra, 182320, India.
| | - Amit Kant Pandit
- School of Electronics & Communication Engineering, Shri Mata Vaishno Devi University, Katra, 182320, India
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25
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Takyi AK, Gyamfi-Bannerman C. The Association between Assisted Reproductive Technology and Preterm delivery in Twin pregnancies. Am J Obstet Gynecol MFM 2021; 4:100522. [PMID: 34700025 DOI: 10.1016/j.ajogmf.2021.100522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 09/21/2021] [Accepted: 10/19/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To determine whether ART is associated with a higher risk of preterm deliveries in twin gestations compared with non-exposure to ART. STUDY DESIGN This is a secondary analysis of a randomized, double-blinded, placebo-controlled trial of weekly progesterone to prevent preterm delivery in twin gestations. For our analysis, all subjects with twin gestations and known gestational age at delivery were included. Women were excluded if they had intrauterine insemination or congenital fetal anomalies. Our primary exposure was ART, defined as IVF and ICSI. Subjects non-exposed to ART either had spontaneous conceptions or were conceived with ovarian stimulation. Our primary outcome was preterm delivery, defined as delivery prior to 35 weeks gestation. Secondary outcomes included spontaneous or indicated preterm delivery less than 35 weeks. RESULTS Of the 1261 subjects, 309 (24.5%) had ART, and 952 (75.5%) were not exposed to ART. Women exposed to ART were more likely to be white, older, and have dichorionic twins, and they were less likely to be smokers. The groups had similar rates of prior preterm births. The rates of overall PTB (40.8% v. 39.3%, p=0.642) and spontaneous PTB (20.8% v. 24.1%, p=0.221) were similar. After adjusting for confounders, ART exposure was not related to any preterm birth category, and the strongest predictors for spontaneous preterm birth was a prior preterm birth (aOR: 3.38, 95% CI: 2.04-5.59, p=<0.0001) and Black race (aOR 1.61, 95% CI: 1.06-2.45, p=0.026). CONCLUSION In our cohort of twin pregnancies, ART was not an independent risk factor for preterm birth.
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Affiliation(s)
- Afua K Takyi
- Mailman School of Public Health, Columbia University; Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University Medical Center, 622 West 168th Street New York, NY, USA; Preventive Medicine, Department of Family Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC.
| | - Cynthia Gyamfi-Bannerman
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University Medical Center, 622 West 168th Street New York, NY, USA; Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Diego, La Jolla, CA
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Chu C, Zhu Y, Liu C, Chen R, Yan Y, Ren Y, Li X, Wang J, Ge W, Kan H, Gui Y. Ambient fine particulate matter air pollution and the risk of preterm birth: A multicenter birth cohort study in China. Environ Pollut 2021; 287:117629. [PMID: 34182393 DOI: 10.1016/j.envpol.2021.117629] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 05/07/2021] [Accepted: 06/19/2021] [Indexed: 06/13/2023]
Abstract
Preterm birth (PTB), defined as live birth before the 37th week of gestation, is believed to have profound impacts on the infant's health in later life. Air pollution has been suggested to be a potential risk factor of PTB, but the evidence was inconsistent. In this multicenter birth cohort study, we aimed to examine the association between fine particulate matter (PM2.5) exposure during pregnancy and PTB in China. A total of 5976 live births were identified between Jan. 2009 and Feb. 2011 from 8 provinces in China. Residential exposures to PM2.5 were assigned based on satellite remote sensing estimates. Cox proportional hazards regressions were employed to explore the correlation for each trimester as well as the entire pregnancy. A total of 443 (7.4%) preterm births were observed. The average PM2.5 during pregnancy was 57.2 ± 8.8 μg/m3. We found exposure to PM2.5 during the whole pregnancy (hazard ratio, HR = 1.262; 95% CI: 1.087-1.465) and in the first trimester (HR = 1.114; 95% CI: 1.007-1.232) was associated with higher risk of PTB. The associations of PM2.5 were stronger for subjects with older maternal or paternal age, lower maternal pre-pregnancy BMI, and lower family income. This study adds supports to the cumulating evidence linking PM2.5 exposure and elevated PTB risk. Measures of air pollution reduction are needed during pregnancy, especially at early stage of pregnancy to prevent adverse birth outcomes.
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Affiliation(s)
- Chen Chu
- Heart Center, Children's Hospital of Fudan University, National Center for Children's Health, Shanghai, China
| | - Yixiang Zhu
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, Shanghai, 200032, China
| | - Cong Liu
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, Shanghai, 200032, China
| | - Renjie Chen
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, Shanghai, 200032, China
| | - Yingliu Yan
- Ultrasound Department, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Yunyun Ren
- Ultrasound Department, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Xiaotian Li
- Department of Obstetrics, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Jimei Wang
- Neonatology Department, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Wenzhen Ge
- Regeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10605, United States
| | - Haidong Kan
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, Shanghai, 200032, China
| | - Yonghao Gui
- Heart Center, Children's Hospital of Fudan University, National Center for Children's Health, Shanghai, China.
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Tolossa T, Tsegaye R, Shiferaw S, Wakuma B, Ayala D, Bekele B, Shibiru T. Survival from a Triple Co-Infection of COVID-19, HIV, and Tuberculosis: A Case Report. Int Med Case Rep J 2021; 14:611-615. [PMID: 34512043 PMCID: PMC8421329 DOI: 10.2147/imcrj.s326383] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/24/2021] [Indexed: 12/24/2022] Open
Abstract
Introduction The triple burden of COVID-19, human immune virus (HIV), and TB co-infection is one of the contemporary challenges to this globe. People living with chronic medical diseases such as HIV and TB are more likely to experience poor outcomes from COVID-19. This study aimed to report survival from triple co-infection with PTB, HIV, and COVID-19 in Wollega University referral hospital (WURH), western Ethiopia. Case Presentation A 55-year-old male known HIV patient on HAART for the last 3 years presented to WURH on May 26, 2021, with chief complaints of shortness of breath of 5 days' duration associated with productive cough, history of high-grade fever, and severe headache. He had produced a lot of bloody sputum one month prior to the current complaints. On 1st day of his presentation, a Gene Expert test was done from sputum, and he was positive for pulmonary TB. On the same day, a nasopharyngeal sample for COVID-19 using polymerase chain reaction (PCR) was positive. On his 2nd day of admission, he was transferred to the COVID-19 treatment center with the diagnosis of severe COVID-19, PTB, and WHO stage-3 RVI. During his stay in the hospital, he was provided with oxygen via a nasal cannula. Intensive phase anti-TB treatment was initiated on the 3rd day of admission. HAART was continued with the same regimen he was taking prior to his presentation. On June 6, 2021, the patient was recovered and discharged from the hospital after 10 days of hospital stay. Conclusion This case report suggests, after 10 days of admission with triple infections, there is a good clinical prognosis and survival from COVID-19. On admission, further diagnosis and investigations of TB co-infection should be performed for all patients admitted with COVID-19 due to their similar and non-specific clinical manifestations.
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Affiliation(s)
- Tadesse Tolossa
- Department of Public Health, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Reta Tsegaye
- Department of Nursing, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Siraj Shiferaw
- School of Medicine, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Bizuneh Wakuma
- Department of Nursing, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Diriba Ayala
- Department of Midwifery, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Belay Bekele
- Wollega University Referral Hospital, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
| | - Tesfaye Shibiru
- School of Medicine, Institute of Health Sciences, Wollega University, Nekemte, Ethiopia
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Rambiki E, Dimba A, Banda P, Ng'ambi W, Banda K, Girma B, Shight B, Lwanda L, Dambe I, Tripathy JP, Chola M, Chanda-Kapata P, Mpunga J, Kathyola D. The prevalence of pulmonary tuberculosis among miners from the Karonga, Rumphi, Kasungu and Lilongwe Districts of Malawi in 2019. Malawi Med J 2021; 32:184-191. [PMID: 34457202 PMCID: PMC8364790 DOI: 10.4314/mmj.v32i4.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Introduction Miners in sub-Saharan Africa have a greater risk of tuberculosis (TB) than any other working population in the world. In spite of the presence of large and vulnerable population of miners in Malawi, no previous study has aimed to assess the burden of TB among these miners. This study aimed to determine the prevalence of pulmonary tuberculosis (PTB) and health-seeking behaviour (HSB) in a population of miners in Malawi, and a range of associated factors. Our goal was to develop a method to identify missing cases of TB. Methods We conducted a cross-sectional study in the Karonga, Rumphi, Kasungu and Lilongwe districts of Malawi in 2019. We calculated frequencies, proportions, odds ratios (ORs) and their 95% confidence intervals (95% CIs), and used the chi-square test in STATA version15.1 to investigate the burden and magnitude of PTB in the mining sector. Bivariate and multivariate logistic regression models were also fitted for PTB and HSB. Results Of the 2400 miners approached, we were able to interview 2013 (84%). Of these, 1435 (71%) were males, 1438 (71%) had known HIV status and 272 (14%) had PTB. Multivariate analysis showed that the miners performing informal mining were 50% more likely to develop PTB compared with those in formal mining (adjusted odds ratio [AOR]=1.50, 95% CI: 1.10–2.05, P=0.01). A total of 459 (23% of 2013) miners had presumptive TB. Of these, 120 (26%) sought health care; 80% sought health care at health facilities. Multivariate analysis also showed that miners who experienced night sweats were less likely to seek health care compared with those without night sweats (AOR=0.52, 95% CI: 0.30–0.90, P=0.02). Conclusion The prevalence of PTB was higher among miners than in the general population. Consequently, targeted TB screening programmes for miners may represent a suitable strategy to adopt if we are to end TB by 2030. Poor health-seeking behaviours among miners is worrisome and further qualitative research is necessary to understand the barriers to accessing health care in these settings.
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Affiliation(s)
- Ethel Rambiki
- Ministry of Health, Department of HIV and AIDS, Lilongwe, Malawi
| | - Andrew Dimba
- Ministry of Health, National TB Control Program, Lilongwe, Malawi
| | - Pilirani Banda
- Ministry of Health, National TB Control Program, Lilongwe, Malawi.,International Training and Education Centre for Health, Lilongwe, Malawi
| | - Wingston Ng'ambi
- Health Economics and Policy Unit, University of Malawi-College of Medicine, Lilongwe, Malawi
| | - Knox Banda
- Ministry of Health, National TB Control Program, Lilongwe, Malawi
| | - Belaineh Girma
- Ministry of Health, National TB Control Program, Lilongwe, Malawi.,International Training and Education Centre for Health, Lilongwe, Malawi
| | - Birru Shight
- Ministry of Health, National TB Control Program, Lilongwe, Malawi
| | - Levi Lwanda
- Ministry of Health, National TB Control Program, Lilongwe, Malawi
| | - Isaias Dambe
- Ministry of Health, National TB Control Program, Lilongwe, Malawi
| | | | - Mumbi Chola
- School of Public Health, University of Zambia, Lusaka, Zambia
| | | | - James Mpunga
- Ministry of Health, National TB Control Program, Lilongwe, Malawi
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29
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Qian C, Dong B, Wang XY, Zhou FQ. In vivo glial trans-differentiation for neuronal replacement and functional recovery in central nervous system. FEBS J 2021; 288:4773-4785. [PMID: 33351267 PMCID: PMC8217397 DOI: 10.1111/febs.15681] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/04/2020] [Accepted: 12/21/2020] [Indexed: 02/07/2023]
Abstract
The adult mammalian central nervous system (CNS) is deficient in intrinsic machineries to replace neurons lost in injuries or progressive degeneration. Various types of these neurons constitute neural circuitries wired to support vital sensory, motor, and cognitive functions. Based on the pioneer studies in cell lineage conversion, one promising strategy is to convert in vivo glial cells into neural progenitors or directly into neurons that can be eventually rewired for functional recovery. We first briefly summarize the well-studied regeneration-capable CNS in the zebrafish, focusing on their postinjury spontaneous reprogramming of the retinal Müller glia (MG). We then compare the signaling transductions, and transcriptional and epigenetic regulations in the zebrafish MGs with their mammalian counterparts, which perpetuate certain barriers against proliferation and neurogenesis and thus fail in MG-to-progenitor conversion. Next, we discuss emerging evidence from mouse studies, in which the in vivo glia-to-neuron conversion could be achieved with sequential or one-step genetic manipulations, such as the conversions from retinal MGs to interneurons, photoreceptors, or retinal ganglion cells (RGCs), as well as the conversions from midbrain astrocytes to dopaminergic or GABAergic neurons. Some of these in vivo studies showed considerable coverage of subtypes in the newly induced neurons and partial reestablishment in neural circuits and functions. Importantly, we would like to point out some crucial technical concerns that need to be addressed to convincingly show successful glia-to-neuron conversion. Finally, we present challenges and future directions in the field for better neural function recovery.
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Affiliation(s)
- Cheng Qian
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - Bryan Dong
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - Xu-Yang Wang
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - Feng-Quan Zhou
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21287,The Solomon H. Snyder Department of Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, MD 21287,Corresponding author: Feng-Quan Zhou, Ph.D., , Phone: 443-287-5649, Address: The John G. Rangos Building, Room 291, 855 North Wolfe Street, Baltimore, MD 21205, USA
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30
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Zhang K, Yin Y, Pei C, Wu C. MicroRNA-124 regulates lens epithelial cell apoptosis by affecting Fas alternative splicing by targeting polypyrimidine tract-binding protein in age-related cataract. Clin Exp Ophthalmol 2021; 49:591-605. [PMID: 34008270 DOI: 10.1111/ceo.13946] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 05/07/2021] [Accepted: 05/14/2021] [Indexed: 12/27/2022]
Abstract
BACKGROUND Age-related cataract (ARC) is a primary cause of visual blindness worldwide. Lens epithelial cell (LEC) apoptosis, in which Fas plays an essential role, is a vital cytological basis for cataractogenesis. However, the regulatory mechanism of Fas-dependent LEC apoptosis is not well understood. This study aimed to investigate whether MicroRNA (miRNA)-124 can regulate LEC apoptosis by targeting polypyrimidine tract-binding protein (PTB) and thereby affecting Fas alternative splicing in ARC. METHODS Lens capsule samples from patients with ARC and cornea donors with a transparent lens were collected. HLE-B3 cells were cultured and treated with hydrogen peroxide (H2 O2 ) to establish an apoptosis model in LECs. The expression of miRNA-124, PTB, Fas, and Fas isoforms in tissues and cell lines was assessed by reverse transcription-quantitative polymerase chain reaction (RT-qPCR), western blotting, polyacrylamide gel electrophoresis, and flow cytometry. The miRNA-124 mimic and inhibitor were transfected into HLE-B3 cells, and the effects of the miRNA-124/PTB/Fas pathway in LECs were assessed by analysis of their related targets. RESULTS High expression of miRNA-124 and membrane Fas (mFas) mRNA and decreased PTB expression were observed in the lens capsule samples. In cells undergoing H2 O2 -induced apoptosis, mFas expression was increased, accompanied by decreased PTB and increased miRNA-124 expression. Subsequently, miRNA-124 upregulation suppressed PTB expression, elevated the mFas level without affecting total Fas expression and promoted apoptosis; miRNA-124 downregulation exerted the opposite effects. CONCLUSION This study revealed that miRNA-124 promotes LEC apoptosis in ARC by upregulating mFas through targeted inhibition of PTB. Moreover, the identification of the miRNA-124/PTB/Fas pathway provides novel insight into Fas-dependent LEC apoptosis.
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Affiliation(s)
- Kaiyun Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yue Yin
- School of Public Health, Xi'an Jiaotong University, Xi'an, China
| | - Cheng Pei
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Changrui Wu
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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31
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Ramachandran P, Savio J, Padaki P, Chhabra R, Veluthat C, Devaraj U, Venkatanarayan K, Krishnaswamy UM, Ghosh S, D'souza GA. A simple x-ray scoring system for the diagnosis of chronic pulmonary aspergillosis. Mycoses 2021; 64:788-793. [PMID: 33835600 DOI: 10.1111/myc.13284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/01/2021] [Accepted: 04/06/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Chronic pulmonary aspergillosis (CPA) is a severe form of post-tuberculosis lung disease (PTBLD). Considering the high burden of TB in India, it can be concluded that the prevalence of CPA is also high. Chest x-ray though most feasible, interpretation is subjective. Therefore, decision on evaluation for CPA cannot be based on x-ray alone. OBJECTIVE Present study evaluated an x-ray score as a marker for extent of lung damage in patients with PTBLD presenting with haemoptysis and its utility to predict Aspergillus serum IgG levels. METHODS We used a modified scoring system developed by Anna Ralph et al X-ray score cut-offs of >71 and 40, with or without history of massive haemoptysis, were compared with serum IgG levels. RESULTS With a chest x-ray score cut-off of 71, specificity was 88%. With an x-ray score of >71 combined with history of massive haemoptysis, 86% cases were found to be IgG positive. The specificity of this combination was 96%. CONCLUSION This study concluded that a simple chest x-ray scoring system in addition to the symptom of massive haemoptysis helped in the decision on further evaluation of the subject for CPA, especially in resource constrained settings.
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Affiliation(s)
- Priya Ramachandran
- Department of Pulmonary Medicine, St. John's Medical college Hospital, Bengaluru, India
| | - Jayanthi Savio
- Department of Microbiology, St. John's Medical college Hospital, Bengaluru, India
| | - Priyadarshini Padaki
- Department of Microbiology, St. John's Medical college Hospital, Bengaluru, India
| | - Ruchita Chhabra
- Department of Microbiology, St. John's Medical college Hospital, Bengaluru, India
| | - Chitra Veluthat
- Department of Pulmonary Medicine, St. John's Medical college Hospital, Bengaluru, India
| | - Uma Devaraj
- Department of Pulmonary Medicine, St. John's Medical college Hospital, Bengaluru, India
| | | | - Uma M Krishnaswamy
- Department of Pulmonary Medicine, St. John's Medical college Hospital, Bengaluru, India
| | - Santu Ghosh
- Department of Biostatistics, St. John's Medical college Hospital, Bengaluru, India
| | - George A D'souza
- Department of Pulmonary Medicine, St. John's Medical college Hospital, Bengaluru, India
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32
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Yi X, Liu S. Impact of environmental factors on pulmonary tuberculosis in multi-levels industrial upgrading area of China. Environ Res 2021; 195:110768. [PMID: 33548291 DOI: 10.1016/j.envres.2021.110768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/20/2020] [Accepted: 01/17/2021] [Indexed: 06/12/2023]
Abstract
In the present paper, an association between the growth rate of PTB and the environmental impacting elements in the pearl river delta region and the closed industry related cities in China is studied. We summarized the characteristics of different industry characteristics in this region by three echelons of urban agglomerations conducted by K-means clustering model on the time series of their monthly AQI data. To determine the impact of environmental factors on the increase of PTB, the SMLR in GLM has been applied. We then measured the seasonal effect and suggest the spring to be the leading season which keep the highest possibility of the incidence of PTB. Besides giving the analysis by fixed meteorological factors, we presented a sensitive analysis with a variation of precipitation. The Genetic algorithms (GAs) is used to determine the "tolerant" interval and as the results, the width of "tolerant" almost keep a declining trend as the precipitation increasing except when the precipitation comes the interval [68,74]. In addition, with the precipitation increasing higher than 64 mm, the "tolerant" for the AQI values from the first and the second echelon both trend to decline, and a lenient environmental policy currently may easily cause a rapid development of PTB growth rate.
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Affiliation(s)
- Xiang Yi
- Business School, City College of Dongguan University of Technology, Dongguan, 523419, PR China.
| | - Shixiao Liu
- Public Health School, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
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Abstract
Tensins are a family of focal adhesion proteins consisting of four members in mammals (TNS1, TNS2, TNS3 and TNS4). Their multiple domains and activities contribute to the molecular linkage between the extracellular matrix and cytoskeletal networks, as well as mediating signal transduction pathways, leading to a variety of physiological processes, including cell proliferation, attachment, migration and mechanical sensing in a cell. Tensins are required for maintaining normal tissue structures and functions, especially in the kidney and heart, as well as in muscle regeneration, in animals. This Review discusses our current understanding of the domain functions and biological roles of tensins in cells and mice, as well as highlighting their relevance to human diseases.
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Affiliation(s)
- Yi-Chun Liao
- Department of Biochemical Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Su Hao Lo
- Department of Biochemistry and Molecular Medicine, University of California-Davis, Sacramento, CA 95817, USA
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Skröder H, Pettersson H, Norlén F, Gustavsson P, Rylander L, Albin M, Selander J. Occupational exposure to whole body vibrations and birth outcomes - A nationwide cohort study of Swedish women. Sci Total Environ 2021; 751:141476. [PMID: 32871309 DOI: 10.1016/j.scitotenv.2020.141476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/02/2020] [Accepted: 08/02/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND More women in reproductive ages are entering occupations where exposure to whole body vibrations (WBV) is common (e.g. in transportation and construction). Previous studies based on self-assessed exposure suggest increased risks of adverse birth outcomes, but it is unclear at what exposure levels and if the current exposure guidelines are appropriate during pregnancy. OBJECTIVES To investigate whether occupational WBV-exposure increases the risk of preterm birth, low birth weight, and/or small-for-gestational age, in a large, nationwide, prospective, cohort study. DESIGN The Fetal Air Pollution Exposure cohort (FAIR) was formed by merging data from multiple, national registers, and the present study includes singletons born 1994-2014 to working women in Sweden (n = 1,091,080 births). WBV-exposure was assessed quantitatively using a job-exposure matrix based on measurements, and calculated odds ratios were adjusted for potential confounders such as smoking and BMI, and other occupational exposures like noise, combustion particles, and physically and psychologically strenuous work. Data on absence from work (full-/part time, sick leave, parental leave, etc.) was also used. RESULTS Exposure to WBV during pregnancy, among women with low absence from work (n = 476,419), was associated with an increased risk of preterm birth, below the occupational exposure limit (1.15 m/s2). Compared to unexposed mothers, the OR was 1.38 (95% CI: 1.05, 1.83) for exposure ≥0.5 m/s2, corresponding to an increase from 47/1000 cases to 65/1000 cases. No increased risk was found for small-for-gestational age. CONCLUSIONS Exposure to WBV was associated with an increased risk of preterm birth. The results suggest that the current permissible exposure and action levels for WBV-exposure do not adequately protect pregnant women with continuous exposure.
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Affiliation(s)
- H Skröder
- Unit of Occupational Medicine, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden.
| | - H Pettersson
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, SE-901 87 Umeå, Sweden
| | - F Norlén
- Unit of Occupational Medicine, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden
| | - P Gustavsson
- Unit of Occupational Medicine, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden
| | - L Rylander
- Division of Occupational and Environmental Medicine, Institute of Laboratory Medicine, Lund University, Box 188, SE-221 85 Lund, Sweden
| | - M Albin
- Unit of Occupational Medicine, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden
| | - J Selander
- Unit of Occupational Medicine, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden
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Ustyantsev IG, Borodulina OR, Kramerov DA. Identification of nucleotide sequences and some proteins involved in polyadenylation of RNA transcribed by Pol III from SINEs. RNA Biol 2020; 18:1475-1488. [PMID: 33258402 DOI: 10.1080/15476286.2020.1857942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
We have previously reported that not only transcripts of RNA polymerase II (pol II), but also one type of RNA transcribed by RNA polymerase III (pol III), undergo AAUAAA-dependent polyadenylation. Such an unusual feature is inherent in Short Interspersed Elements (SINEs) from genomes of certain mammals. For polyadenylation of its transcript, SINE should contain, besides an AATAAA hexamer and a transcription terminator, two specific regions: β, located downstream of box B of a promoter, and τ, preceding AATAAA. Here, using nucleotide substitutions in SINEs B2 (mouse) and Ves (bat), we identified nucleotides of β regions necessary for polyadenylation of their transcripts. These sequences (β signals) are the following: ACCACATgg in B2 and GGGCATGT in Ves. Using this approach, we identified τ signal of SINE B2 (GCTACagTGTACTTACAT), where TGTA tetramer is most important for polyadenylation. In Ves, τ region is a long polypyrimidine motif which is able to interact with PTB protein in Ves transcripts. We demonstrated by knockdown that B2 and Ves transcript polyadenylation is performed by canonical poly(A) polymerase with the participation of proteins CSPF-160 and Fip1, the known factors of mRNA polyadenylation. We also showed that a factor CFIm partaking in polyadenylation of many mRNAs, is involved only in polyadenylation of B2 transcripts. CFIm seems to interact with τ signal of В2 RNA and thereby facilitates the recruiting of other proteins engaged in polyadenylation. Thus, SINEs utilize at least some proteins involved in polyadenylation of pol II transcripts to polyadenylate their pol III transcripts.
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Affiliation(s)
- Ilia G Ustyantsev
- Laboratory of Eukaryotic Genome Evolution, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Olga R Borodulina
- Laboratory of Eukaryotic Genome Evolution, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Dmitri A Kramerov
- Laboratory of Eukaryotic Genome Evolution, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
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Goud KI, Kavitha M, Mahalakshmi A, Vempati R, Alodhayani AA, Mohammed AA, Khan IA. Molecular detection of Mycobacterium tuberculosis in pulmonary and extrapulmonary samples in a hospital-based study. Afr Health Sci 2020; 20:1617-1623. [PMID: 34394222 PMCID: PMC8351870 DOI: 10.4314/ahs.v20i4.14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVE Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), remains a deadly infectious disease. India contributes to one-third of the global TB burden. However, no studies have been carried out in the Telangana (Hyderabad) population using real-time polymerase chain reaction (RT-PCR). Therefore, the current study evaluated the role of RT-PCR as a rapid and non-invasive test to diagnose TB by testing for pulmonary tuberculosis (PTB) and extrapulmonary tuberculosis (EPTB). MATERIALS AND METHODS This hospital-based study examined 1670 samples (900 EPTB; 770 PTB) comprising tissue (n = 537), peritoneal fluid (n = 420), sputum (n = 166), bronchial fluid (n = 126), cerebrospinal fluid (n = 145), ascetic fluid (n = 76), sputum pus (n = 78), urine (n = 79), and bronchoalveolar fluid (n = 43) samples. DNA from samples was separated using specific isolation kits and subjected to RT-PCR. RESULTS In this study, we enrolled 1670 subjects and categorized 54.4% as females and 45.6% as males. The collected samples were categorized as 48.5% of fluid samples, followed by tissue (32.2%), sputum (9.9%), urine (4.7%), and pus-swab (4.6%). RT-PCR analysis revealed that 4.7% patients were positive for Mtb. Our results revealed that 61% of the affected patients were male and 39% were female. Among the specimen types, tissue samples gave the highest proportion of positive results (36.3%). CONCLUSION The results showed that RT-PCR should be implemented and given top priority in TB diagnosis to save time and facilitate a definitive diagnosis. Tissue samples are highly recommended to screen the Mtb through the technique RTPCR. Future studies should extend the technique to the global population and exome sequencing analysis should be performed to identify TB risk markers.
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Affiliation(s)
- Kalal Iravathy Goud
- Molecular Biology and Cytogenetics Department, Apollo Hospitals, Jubilee Hills Hyderabad-500096, Telangana, India
| | - Matam Kavitha
- Molecular Biology and Cytogenetics Department, Apollo Hospitals, Jubilee Hills Hyderabad-500096, Telangana, India
| | - Adi Mahalakshmi
- Molecular Biology and Cytogenetics Department, Apollo Hospitals, Jubilee Hills Hyderabad-500096, Telangana, India
| | - Ravi Vempati
- Molecular Biology and Cytogenetics Department, Apollo Hospitals, Jubilee Hills Hyderabad-500096, Telangana, India
| | - Abdulaziz A Alodhayani
- Family & Community Medicine Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Arif A Mohammed
- Center of Excellence in Biotechnology Research, King Saud University, PO Box-2455, Riyadh, Saudi Arabia
| | - Imran Ali Khan
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box-10219, Riyadh-11433, Saudi Arabia
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Rizvi SMS, Tarafder S, Anwar S, Perdigão J, Johora FT, Sattar H, Kamal SMM. Circulating strains of Mycobacterium tuberculosis: 24 loci MIRU-VNTR analysis in Bangladesh. Infect Genet Evol 2020; 86:104634. [PMID: 33186780 DOI: 10.1016/j.meegid.2020.104634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 11/06/2020] [Accepted: 11/07/2020] [Indexed: 10/23/2022]
Abstract
Bangladesh is among the high burden countries for tuberculosis (TB) and multidrug resistant TB (MDR-TB). As the genetic diversity and distinct phylogeographic distribution of Mycobacterium tuberculosis are responsible for regional differences in drug resistance, this cross sectional study was conducted to identify the circulating M. tuberculosis strains belonging to different lineages among pulmonary tuberculosis and, to investigate the contribution of distinct M. tuberculosis lineages to rifampicin resistant (RR) and rifampicin sensitive (RS) TB. A total of 40 RR and 20 RS isolates were enrolled in this study, all of which confirmed as M. tuberculosis by MPT 64 antigen detection. Furthermore, all isolates were genotyped by 24 loci Mycobacterial Interspersed Repetitive Units-Variable Number of Tandem Repeats (MIRU-VNTR), thus comprising the first study to employ this approach in Bangladesh. Beijing was the predominant lineage (26.8%) followed by EAI (23.2%), Delhi/CAS (16.1%), H37Rv (8.9%), Haarlem (7.1%), LAM (5.4%), Cameroon (3.6%) and a NEW-1 (1.8%). Four (7.1%) isolates remained as unidentified. Beijing strains were the significantly predominant (36.8%; p = 0.0135) among the RR isolates in comparison with other strains whereas EAI was the predominant (38.8%) lineage among RS isolates. Also, approximately 13% RR isolates showed genotypic resistance against fluoroquinolones by LPA and, hence, classed as pre-XDR TB albeit no specific lineage was found associated with these latter strains. A low transmission rate (10.5%) and high genetic diversity was detected in this setting with all the clustered strains herein identified belonging to the Beijing lineage. This study highlights 24 loci MIRU-VNTR analysis as a powerful tool for genotyping of Mycobacterium tuberculosis in this setting as it shows a high discriminatory index (0.81).
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Affiliation(s)
- S M Shahriar Rizvi
- Communicable Disease Control (CDC), Directorate General of Health Services, Mohakhali, Dhaka 1212, Bangladesh.
| | - Shirin Tarafder
- Department of Microbiology & Immunology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - Shaheda Anwar
- Department of Microbiology & Immunology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
| | - João Perdigão
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Fatima Tuj Johora
- Department of Microbiology, East West Medical College, Dhaka, Bangladesh
| | - Humayun Sattar
- Department of Microbiology & Immunology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh
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Johnston RC, Faulkner M, Carpenter PM, Nael A, Haydel D, Sandman CA, Wing DA, Davis EP. Associations Between Placental Corticotropin-Releasing Hormone, Maternal Cortisol, and Birth Outcomes, Based on Placental Histopathology. Reprod Sci 2020; 27:1803-1811. [PMID: 32219714 PMCID: PMC7396307 DOI: 10.1007/s43032-020-00182-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 03/13/2020] [Indexed: 01/21/2023]
Abstract
Preterm birth remains the leading cause of neonatal morbidity and mortality, with complex biochemical pathways requiring continued understanding and assessment. The objective of this study is to assess the associations between maternal cortisol and placental corticotropin-releasing hormone (placental CRH) concentrations with birth outcomes when stratified by placental histopathology. We conducted an analysis of 112 singleton pregnancies who received betamethasone between 23 and 34 weeks' gestation. Maternal blood and saliva were collected prior to betamethasone administration and samples assayed for plasma cortisol (pCort), salivary cortisol (sCort), and placental CRH levels. Placental findings were characterized as inflammatory, maternal vascular underperfusion (MVU), or no pathology, and compared for the outcomes of placental CRH, pCort, and sCort levels, gestational age at birth (GAB), and birthweight percentiles (BWP). Thirty-six subjects were characterized as inflammatory, 38 as MVU, and 38 without placental abnormalities. Histopathology groups differed significantly on placental CRH levels, GAB, and BWP. Post hoc tests suggested that the MVU group had higher placental CRH than the inflammatory or no pathology groups, and despite delivering earlier than the other two groups, the inflammatory group had infants with significantly higher BWP. No differences existed between groups in terms of mean plasma or sCort levels. Higher placental CRH and pCort levels were associated with earlier GAB in the overall sample, but when split by group, these associations remained significant only among the MVU group. Higher placental CRH was also associated with lower BWP in the overall sample but did not remain significant when split by group. Higher sCort was associated with lower BWP only in the MVU group. There is differentiation of placental CRH, cortisol, and birth outcomes when evaluated by placental histopathology. This highlights the importance of evaluating birth outcomes within the context of placental histopathology.
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Affiliation(s)
- Robert C Johnston
- University of California, Irvine, Orange, CA, 92868, USA.
- Austin Maternal Fetal Medicine, 12200 Renfert Way, Suite G-3, Austin, TX, 78758, USA.
| | - Megan Faulkner
- University of California, Irvine, Orange, CA, 92868, USA
| | - Philip M Carpenter
- University of California, Irvine, Orange, CA, 92868, USA
- University of Southern California, Los Angeles, CA, 90033, USA
| | - Ali Nael
- University of California, Irvine, Orange, CA, 92868, USA
- Children's Hospital Orange County, Orange County, CA, 92868, USA
| | - Dana Haydel
- Texas Children's Hospital, Houston, TX, 77030, USA
| | - Curt A Sandman
- University of California, Irvine, Orange, CA, 92868, USA
- University of Denver, Denver, CO, 80208, USA
| | - Deborah A Wing
- University of California, Irvine, Orange, CA, 92868, USA
| | - Elysia Poggi Davis
- University of California, Irvine, Orange, CA, 92868, USA
- University of Denver, Denver, CO, 80208, USA
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Lin L, Zhang M, Stoilov P, Chen L, Zheng S. Developmental Attenuation of Neuronal Apoptosis by Neural-Specific Splicing of Bak1 Microexon. Neuron 2020; 107:1180-1196.e8. [PMID: 32710818 DOI: 10.1016/j.neuron.2020.06.036] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 05/29/2020] [Accepted: 06/28/2020] [Indexed: 12/12/2022]
Abstract
Continuous neuronal survival is vital for mammals because mammalian brains have limited regeneration capability. After neurogenesis, suppression of apoptosis is needed to ensure a neuron's long-term survival. Here we describe a robust genetic program that intrinsically attenuates apoptosis competence in neurons. Developmental downregulation of the splicing regulator PTBP1 in immature neurons allows neural-specific splicing of the evolutionarily conserved Bak1 microexon 5. Exon 5 inclusion triggers nonsense-mediated mRNA decay (NMD) and unproductive translation of Bak1 transcripts (N-Bak mRNA), leading to suppression of pro-apoptotic BAK1 proteins and allowing neurons to reduce apoptosis. Germline heterozygous ablation of exon 5 increases BAK1 proteins exclusively in the brain, inflates neuronal apoptosis, and leads to early postnatal mortality. Therefore, neural-specific exon 5 splicing and depletion of BAK1 proteins uniquely repress neuronal apoptosis. Although apoptosis is important for development, attenuation of apoptosis competence through neural-specific splicing of the Bak1 microexon is essential for neuronal and animal survival.
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Yan J, Guo J, Fan C, Juan J, Yu X, Li J, Feng L, Li C, Chen H, Qiao Y, Lei D, Wang C, Xiong G, Xiao F, He W, Pang Q, Hu X, Wang S, Chen D, Zhang Y, Poon LC, Yang H. Coronavirus disease 2019 in pregnant women: a report based on 116 cases. Am J Obstet Gynecol 2020; 223:111.e1-111.e14. [PMID: 32335053 PMCID: PMC7177142 DOI: 10.1016/j.ajog.2020.04.014] [Citation(s) in RCA: 417] [Impact Index Per Article: 104.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 01/08/2023]
Abstract
Background The coronavirus disease 2019, caused by severe acute respiratory syndrome coronavirus 2, is a global public health emergency. Data on the effect of coronavirus disease 2019 in pregnancy are limited to small case series. Objective To evaluate the clinical characteristics and outcomes in pregnancy and the vertical transmission potential of severe acute respiratory syndrome coronavirus 2 infection. Study Design Clinical records were retrospectively reviewed for 116 pregnant women with coronavirus disease 2019 pneumonia from 25 hospitals in China between January 20, 2020, and March 24, 2020. Evidence of vertical transmission was assessed by testing for severe acute respiratory syndrome coronavirus 2 in amniotic fluid, cord blood, and neonatal pharyngeal swab samples. Results The median gestational age on admission was 38+0 (interquartile range, 36+0–39+1) weeks. The most common symptoms were fever (50.9%, 59/116) and cough (28.4%, 33/116); 23.3% (27/116) patients presented without symptoms. Abnormal radiologic findings were found in 96.3% (104/108) of cases. Of the 116 cases, there were 8 cases (6.9%) of severe pneumonia but no maternal deaths. One of 8 patients who presented in the first trimester and early second trimester had a missed spontaneous abortion. Of 99 patients, 21 (21.2%) who delivered had preterm birth, including 6 with preterm premature rupture of membranes. The rate of spontaneous preterm birth before 37 weeks’ gestation was 6.1% (6/99). One case of severe neonatal asphyxia resulted in neonatal death. Furthermore, 86 of the 100 neonates tested for severe acute respiratory syndrome coronavirus 2 had negative results; of these, paired amniotic fluid and cord blood samples from 10 neonates used to test for severe acute respiratory syndrome coronavirus 2 had negative results. Conclusion Severe acute respiratory syndrome coronavirus 2 infection during pregnancy is not associated with an increased risk of spontaneous abortion and spontaneous preterm birth. There is no evidence of vertical transmission of severe acute respiratory syndrome coronavirus 2 infection when the infection manifests during the third trimester of pregnancy.
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San Martin Porter MA, Kisely S, Betts KS, Alati R. The effect of antenatal screening for depression on neonatal birthweight and gestation. Women Birth 2020; 34:389-395. [PMID: 32622751 DOI: 10.1016/j.wombi.2020.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Antenatal depression has been associated with poor perinatal outcomes such as preterm birth and low birth weight. Universal screening of perinatal depression has been recommended to improve maternal and pregnancy outcomes. HYPOTHESIS AND AIM We hypothesise that screening for antenatal depressive symptoms may reduce the risk of preterm birth and low birth weight. To assess the hypothesis, we explore the association between antenatal depression screening using the Edinburgh Postnatal Depression Scale and neonatal outcomes. METHODS A retrospective analysis of state-wide population-based health administrative data. Inclusion criteria were pregnant women who gave birth to a singleton in Queensland in the second half of 2015 (29,543 women). Logistic regression analyses were run in 27,817 women with information in all variables. Main outcomes were preterm birth (<37 weeks of gestation) and low birth weight (<2500 grs). RESULTS Women who did not complete the screening had increased odds of preterm birth (AOR, 1.56; 95% CI, 1.39-1.74; p < 0.001) and low birth weight (AOR, 1.48; 95% CI, 1.30-1.68; p < 0.001) before and after adjustments for relevant confounders when compared to women who completed the screening. Sensitivity analyses performed in women with spontaneous labour and in women without a diagnosis of depression showed similar results. CONCLUSION(S) We found an association between screening for depressive symptoms during pregnancy and better neonatal outcomes. However, this result does not necessarily infer causality. Any association may represent a previously unknown benefit to screening, which could support the case for universal antenatal depression screening.
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Affiliation(s)
| | - Steve Kisely
- Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Kim S Betts
- School of Public Health, Curtin University, Perth, Western Australia, Australia
| | - Rosa Alati
- Institute for Social Science Research, University of Queensland, Brisbane, Queensland, Australia; School of Public Health, Curtin University, Perth, Western Australia, Australia
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Vitner D, Melamed N, Elhadad D, Phang M, Ram M, Asztalos E, Zaltz A, Shah PS, Barrett J. Removal vs. retention of cervical cerclage in pregnancies complicated by preterm premature rupture of membranes: a retrospective study. Arch Gynecol Obstet 2020; 302:603-609. [PMID: 32533285 DOI: 10.1007/s00404-020-05642-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 06/06/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE To compare pregnancy outcomes in women with pPROM and a cervical cerclage in whom the cerclage was removed within 24 h and those in whom the cerclage was retained in situ. METHODS A two-center retrospective cohort study of women with a singleton gestation with pPROM at < 340/7 weeks of gestation in the presence of cervical cerclage (January 1, 2012-July 30, 2016). Maternal and perinatal outcomes were compared between women in whom cerclage was removed within 24 h from pPROM and those in whom cerclage was retained until the onset of delivery. The primary outcome was time from pPROM to delivery. RESULTS Seventy women met inclusion criteria. Cerclage was left in situ in 47 (67.1%) and removed in 23 (32.9%) women. Women in the cerclage retention group had a higher pPROM-to-delivery interval (7.0 ± 7.2 vs. 6.0 ± 10.9 days, p = 0.03), and were more likely to have a latency period > 48 h (87.2% vs. 65.2%, p = 0.03; aOR 3.9, 95% CI 3.1-4.9) or > 7 days (29.8% vs. 8.7%, p = 0.04; aOR 7.0, 95% CI 2.5-19.6) compared with women in whom cerclage was removed. Furthermore, chorioamnionitis rate was lower in the cerclage retention group compared to cerclage removal group (aOR 0.7, 95% CI 0.5-1.0). There were no differences between the groups in early neonatal sepsis, severe brain injury, or composite neonatal outcome. CONCLUSION In women with pPROM and cervical cerclage, retention of cerclage may be associated with a longer latency period, and a lower chorioamnionitis rate, without an associated increase in the risk of neonatal infectious morbidity. Presentation information: The abstract of this study was presented as a poster at the 38th SMFM (Society of Maternal and Fetal Medicine) annual meeting, February 2018, Dallas, Texas, USA.
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Affiliation(s)
- Dana Vitner
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada. .,Rambam HealthCare Campus, Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
| | - Nir Melamed
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - David Elhadad
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - Michael Phang
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - Maya Ram
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - Elizabeth Asztalos
- Department of Newborn and Developmental Paediatrics, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - Arthur Zaltz
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - Prakesh S Shah
- Departments of Paediatrics and HPME, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
| | - Jon Barrett
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
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Visser L, de Boer MA, Ravelli ACJ, Groen H, Mol BW, de Groot CJM. Increased incidence of hypertensive disorders of pregnancy in women with a history of spontaneous preterm birth: A longitudinal linked national cohort study. Pregnancy Hypertens 2020; 22:59-63. [PMID: 32739719 DOI: 10.1016/j.preghy.2020.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/30/2020] [Accepted: 05/25/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Determine the risk of hypertensive disorders of pregnancy (HD) in women with a history of spontaneous preterm birth (SPTB). STUDY DESIGN Longitudinal linked national cohort study within the Dutch Perinatal Registry (1999-2009) on linked data among 349,291 women with a first and second singleton pregnancy in the Netherlands. MAIN OUTCOME MEASURES The incidence of HD, small for gestational age (SGA) and placental abruption in the second pregnancy. RESULTS Out of 349,291 women with a singleton first pregnancy, 19,991 (5.7%) had a SPTB. The incidence of HD in the second pregnancy was 8.1% in women with a previous SPTB, as compared to 5.6% in women with a previous term birth (aOR 1.49 (CI 1.41-1.57)). Also after excluding HD, SGA and/or placental abruption in the first pregnancy, women with a history of SPTB had a higher risk of HD in their second pregnancy compared to women with a previous term birth (4.6% versus 2.7%, aOR 1.77 (CI 1.64-191)). Similarly, the incidence of SGA and placental abruption was higher in the second pregnancy in women with a history of SPTB compared to term birth in the first pregnancy. CONCLUSIONS Women with a history of SPTB are at elevated risk of HD in the subsequent pregnancy. These results support shared pathophysiology between SPTB and HD.
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Affiliation(s)
- Laura Visser
- Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands; Monash University, Clayton, Australia.
| | - Marjon A de Boer
- Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands; Monash University, Clayton, Australia.
| | - Anita C J Ravelli
- Amsterdam UMC, University of Amsterdam, The Netherlands; Monash University, Clayton, Australia.
| | - Henk Groen
- University of Groningen, The Netherlands; Monash University, Clayton, Australia.
| | - Ben Willem Mol
- University of Groningen, The Netherlands; Monash University, Clayton, Australia.
| | - Christianne J M de Groot
- Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands; Monash University, Clayton, Australia.
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Gebretsadik D, Ahmed N, Kebede E, Mohammed M, Belete MA. Prevalence of Tuberculosis by Automated GeneXpert Rifampicin Assay and Associated Risk Factors Among Presumptive Pulmonary Tuberculosis Patients at Ataye District Hospital, North East Ethiopia. Infect Drug Resist 2020; 13:1507-1516. [PMID: 32547120 PMCID: PMC7247715 DOI: 10.2147/idr.s248059] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/29/2020] [Indexed: 01/05/2023] Open
Abstract
Background Tuberculosis is a communicable disease that is a major cause of ill health, one of the top 10 causes of death worldwide, and the leading cause of death from a single infectious agent, even ranking above human immuno-deficiency virus (HIV/AIDS). Objective To assess the prevalence and associated risk factor of Mycobacterium tuberculosis among pulmonary tuberculosis (PTB) suspects attending at Ataye District Hospital from October 1, 2018, to February 30, 2019. Methodology A facility-based cross-sectional study was conducted among 423 presumptive tuberculosis patients at Ataye District Hospital. Sputum was processed by MTB/RIF Xpert assay. Data were entered into EpiData 3.1 software and exported to SPSS version 20.0 (SPSS, Chicago, IL, USA) for analysis. Univariate and multivariate analyses were used to examine the relationship between the dependent and independent variables. Variables that show significance at P-value of 0.3 during univariate analysis were selected for multivariable analysis. A P-value of less than or equal to 0.05 was used to indicate statistical significance. Results Out of the total study participants, about 60% were male, and 39% were aged between 18 and 24 years. Of the total 423 PTB suspected patients, 38 (8.98%) of them were identified as having PTB by GeneXpert and 2/38 (5.3%) were resistant to rifampicin and 3/38 (7.89%) patients were co-infected with HIV. Participant age between 18 and 24 years and between 25 and 34 years, weight loss, chest pain, having contact history with confirmed PTB cases, utilization of congested transportation, and a history of imprisonment were significantly associated with the prevalence of PTB. Conclusion A considerable prevalence of PTB in the area was observed and the magnitude of MDR-TB was low. PTB is still a public health problem in Ethiopia and there is a need for collaborative prevention and control activities in the study area.
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Affiliation(s)
- Daniel Gebretsadik
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Nuru Ahmed
- Ataye District Hospital, Ataye, Ethiopia
| | - Edosa Kebede
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Miftah Mohammed
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Melaku Ashagrie Belete
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
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Yang WB, Wang HL, Mao JT, Chen Z, Xu JW, Wang LH, Xu M, Zhang X. The correlation between CT features and insulin resistance levels in patients with T2DM complicated with primary pulmonary tuberculosis. J Cell Physiol 2020; 235:9370-9377. [PMID: 32346889 DOI: 10.1002/jcp.29741] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/06/2020] [Accepted: 04/18/2020] [Indexed: 01/19/2023]
Abstract
The aim is to investigate the correlation between computed tomography (CT) features and insulin resistance levels in patients with type 2 diabetes mellitus (T2DM) complicated with primary pulmonary tuberculosis (PTB). Nearly, 268 untreated PTB patients complicated with T2DM were divided into two groups according to the optimal cutoff value of HOMA-IR score for the Chinese population: HOMA-IR ≤ 2.69 (Group I: 74 patients), >2.69 (Group II: 194 patients). The basic characteristics and changes of CT manifestations were analyzed. In the two groups, the detection rate of large segmented leafy shadow was 39.2% and 78.9%; the air bronchogram sign detection rate was 40.5% and 80.9%; the discovery rate of mouth-eaten cavity was 33.8% and 73.7%; the thin-walled cavity detection rate was 2.7% and 16.0%; the rate of multiple cavities was 35.1% and 69.6%; and bronchial tuberculosis was found in 4.1% and 35.6%, respectively. The detection rates of lesions in Group II were significantly higher than in Group I (p < .05). HOMA-IR was found independently associated with large segmented leafy shadow, air bronchial sign, thin-walled cavity, and bronchial tuberculosis. The level of insulin resistance can effectively reflect the severity of PTB patients with T2DM. CT scan can directly provide image information in clinics. These two examinations can guide clinicians to accurately formulate subsequent treatment plans.
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Affiliation(s)
- Wei-Bin Yang
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, The Fifth Affiliated Hospital of Wenzhou Medical University/Affiliated Lishui Hospital of Zhejiang University/The Central Hospital of Zhejiang Lishui, Lishui, China
| | - Hai-Lin Wang
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, The Fifth Affiliated Hospital of Wenzhou Medical University/Affiliated Lishui Hospital of Zhejiang University/The Central Hospital of Zhejiang Lishui, Lishui, China
| | - Jian-Ting Mao
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, The Fifth Affiliated Hospital of Wenzhou Medical University/Affiliated Lishui Hospital of Zhejiang University/The Central Hospital of Zhejiang Lishui, Lishui, China
| | - Zhen Chen
- Department of Medical Imaging, The Fourth People's Hospital of Huai'an, Huai'an, Jiangsu, China
| | - Jin-Wei Xu
- Department of Medical Imaging, The Fourth People's Hospital of Huai'an, Huai'an, Jiangsu, China
| | - Lian-Hong Wang
- Department of Medical Imaging, The Fourth People's Hospital of Huai'an, Huai'an, Jiangsu, China
| | - Min Xu
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, The Fifth Affiliated Hospital of Wenzhou Medical University/Affiliated Lishui Hospital of Zhejiang University/The Central Hospital of Zhejiang Lishui, Lishui, China
| | - Xin Zhang
- Department of Medical Imaging, The Fourth People's Hospital of Huai'an, Huai'an, Jiangsu, China
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Mertaniasih NM, Soedarsono, Kusmiati T, Koendhori EB, Kusumaningrum D, Koesprijani, Sulistyowati T, Nuha Z, Chanifah H. Difficulties with the implemented xpert MTB/RIF for determining diagnosis of pulmonary and extrapulmonary tuberculosis in adults and children. J Clin Tuberc Other Mycobact Dis 2020; 19:100159. [PMID: 32258438 DOI: 10.1016/j.jctube.2020.100159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background and aims Handling of PTB and EPTB patients with adequate standard detection of MTBC and anti-TB drug sensitivity using accurate and rapid methods could provide good TB management and clinical treatment outcomes. The Xpert MTB/RIF assay is an automated, cartridge-based NAAT that can simultaneously detect MTBC and RIF resistance within 2 h. The aim of this study was to evaluate the implementation of Xpert for determining diagnosis of PTB and EPTB in adults and children. Methods A descriptive study was performed using e-TB Manager data from the MDR-TB Clinic at Dr. Soetomo Academic Hospital. Suspected TB cases were from the areas of East Java Province from January 2016 to December 2018. Xpert assay was conducted using standardized criteria for clinically suspected TB, and MTBC-positive results with RR were examined by the culture method using MGIT 960 BACTEC System. Results A total of 1181 (1181/3009, 39.25%) sputum samples from suspected new MDR-PTB cases tested positive for MTBC with 3.02% RR. Among 3893 sputum samples from previously treated probable MDR-PTB cases tested using Xpert, 1936 (49.73%) were MTBC positive with 13.20% RR. Among 59 new suspected MDR-PTB cases tested using MGIT 960 BACTEC System, 55 tested positive for MTBC, although all RR strains were highly sensitive to amikacin (100%), kanamycin (95%), and ofloxacin (89%). A total of 49 children with suspected PTB were tested using Xpert, revealing low positivity (12%) for MTBC, with all RR strains being rifampicin sensitive (RS). Of the 86 suspected EPTB cases tested using Xpert, very few were MTBC-positive (26%), with 91% RS. Conclusions This study revealed that in adults and children with PTB and EPTB, the Xpert assay achieved a low positivity detection rate for MTBC in samples from new or previously treated cases, and this could be the result of many factors.
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Getahun M, Blumberg HM, Sinshaw W, Diriba G, Mollalign H, Tesfaye E, Yenew B, Taddess M, Zewdie A, Dagne K, Beyene D, Kempker RR, Ameni G. Low Prevalence of Mycobacterium bovis in Tuberculosis Patients, Ethiopia. Emerg Infect Dis 2020; 26:613-615. [PMID: 32091379 PMCID: PMC7045829 DOI: 10.3201/eid2603.190473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
An estimated 17% of all tuberculosis cases in Ethiopia are caused by Mycobacterium bovis. We used M. tuberculosis complex isolates to identify the prevalence of M. bovis as the cause of pulmonary tuberculosis. Our findings indicate that the proportion of pulmonary tuberculosis due to M. bovis is small (0.12%).
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Dave P, George B, Balakrishnan S, Sharma DK, Raheja H, Dixit NM, Das S. Strand-specific affinity of host factor hnRNP C1/C2 guides positive to negative-strand ratio in Coxsackievirus B3 infection. RNA Biol 2019; 16:1286-1299. [PMID: 31234696 DOI: 10.1080/15476286.2019.1629208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Coxsackievirus B3 is an enterovirus, with positive-sense single-stranded RNA genome containing 'Internal Ribosome Entry Site' (IRES) in the 5'UTR. Once sufficient viral proteins are synthesized in the cell from the input RNA, viral template switches from translation to replication to synthesize negative-strand RNA. Inhibition of translation is a key step in regulating this switch as the positive-strand RNA template should be free of ribosomes to enable polymerase movement. In this study, we show how a host protein hnRNP C1/C2 inhibits viral RNA translation. hnRNP C1/C2 interacts with stem-loop V in the IRES and displaces poly-pyrimidine tract binding protein, a positive regulator of translation. We further demonstrate that hnRNP C1/C2 induces translation to replication switch, independently from the already known role of the ternary complex (PCBP2-3CD-cloverleaf RNA). These results suggest a novel function of hnRNP C1/C2 in template switching of positive-strand from translation to replication by a new mechanism. Using mathematical modelling, we show that the differential affinity of hnRNP C1/C2 for positive and negative-strand RNAs guides the final ± RNA ratio, providing first insight in the regulation of the positive to negative-strand RNA ratio in enteroviruses.
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Affiliation(s)
- Pratik Dave
- a Department of Microbiology and Cell Biology, Indian Institute of Science , Bangalore , Karnataka , India
| | - Biju George
- a Department of Microbiology and Cell Biology, Indian Institute of Science , Bangalore , Karnataka , India
| | - Sreenath Balakrishnan
- b Center for BioSystems Science and Engineering, Indian Institute of Science , Bangalore , Karnataka , India
| | - Divya Khandige Sharma
- a Department of Microbiology and Cell Biology, Indian Institute of Science , Bangalore , Karnataka , India
| | - Harsha Raheja
- a Department of Microbiology and Cell Biology, Indian Institute of Science , Bangalore , Karnataka , India
| | - Narendra M Dixit
- b Center for BioSystems Science and Engineering, Indian Institute of Science , Bangalore , Karnataka , India.,c Department of Chemical Engineering, Indian Institute of Science , Bangalore , Karnataka , India
| | - Saumitra Das
- a Department of Microbiology and Cell Biology, Indian Institute of Science , Bangalore , Karnataka , India.,b Center for BioSystems Science and Engineering, Indian Institute of Science , Bangalore , Karnataka , India.,d Centre for Infectious Disease Research, Indian Institute of Science , Bangalore , Karnataka , India.,e Infectious Disease Research, National Institute of Biomedical Genomics , Kalyani , West Bengal , India
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Malede A, Taye B, Legesse M, Debie A, Shibabaw A. Pulmonary tuberculosis preventive practices among Anibessa Bus users at Addis Ababa, Ethiopia: a cross-sectional study. BMC Res Notes 2019; 12:104. [PMID: 30808404 PMCID: PMC6390587 DOI: 10.1186/s13104-019-4135-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 02/15/2019] [Indexed: 12/03/2022] Open
Abstract
Objective Tuberculosis (TB) is a chronic infectious disease caused by Mycobacterium tuberculosis. Smear positive tuberculosis patients are responsible for up to 90% of transmission occurring in the community. However, little is known about pulmonary tuberculosis preventive practices among bus users in Ethiopia. This study aimed to assess the level of Pulmonary Tuberculosis (PTB) preventive practices and associated factors among bus users at Addis Ababa. Results Community based cross-sectional study was conducted among bus users at Addis Ababa. Participants were selected using systematic sampling technique. Overall, 50.5% of bus users had good practices on prevention of PTB at Addis Ababa. The odds of practicing prevention of PTB among participants who were attended secondary school (AOR = 4.63; 95% CI 2.62, 11.17) and higher education (AOR = 2.86: 95% CI 1.13, 7.73), resided at Addis Ababa (AOR = 2.51; 95% CI 1.61, 5.21), knowledgeable about PTB (AOR = 4.12; 95% CI 3.14, 5.70), and using mass media (AOR = 2.14; 95% CI 1.78, 4.27) as a source of information were higher than the odds of their respective counterparts. The overall practice of pulmonary tuberculosis prevention among city bus users in the study area was low. Therefore, enhancing educational opportunity and increase community awareness about the causes, risk factors and means of transmission using mass media might improve the practices of PTB prevention during bus transportation. Electronic supplementary material The online version of this article (10.1186/s13104-019-4135-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Asmamaw Malede
- College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Biruhalem Taye
- Akililu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Mengistu Legesse
- College of Medicine and Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Ayal Debie
- Department of Health Systems & Policy, College Medicine and Health Sciences, Institute of Public Health, University of Gondar, P.O.Box 196, Gondar, Ethiopia.
| | - Agumas Shibabaw
- College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
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50
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Xi J, Ye F, Wang G, Han W, Wei Z, Yin B, Yuan J, Qiang B, Peng X. Polypyrimidine Tract-Binding Protein Regulates Enterovirus 71 Translation Through Interaction with the Internal Ribosomal Entry Site. Virol Sin 2019; 34:66-77. [PMID: 30796736 PMCID: PMC6420457 DOI: 10.1007/s12250-019-00089-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/19/2018] [Indexed: 02/05/2023] Open
Abstract
Enterovirus 71 (EV71), a major causative agent of hand, foot, and mouth disease, has caused periodic infection outbreaks in children in the Asia–Pacific region. In order to describe the largely unknown life cycle of EV71, the molecular basis of its virus-host interactions must first be determined. The 5′ untranslated region of EV71 contains a cloverleaf-like structure and internal ribosomal entry site (IRES), which play an important role in transcription and translation of viral protein. We found that polypyrimidine tract-binding protein 1 (PTB) bound to the IRES of EV71. RNA recognition motifs 1 and 2 of PTB were responsible for its binding to the EV71 IRES. Moreover, PTB protein was shuttled from nucleus to cytoplasm after EV71 infection. Additionally, IRES activity and viral protein production were inhibited by PTB knockdown. These results suggest that PTB interacts with the EV71 IRES, and positively regulates viral protein translation.
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Affiliation(s)
- Juemin Xi
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, China
| | - Fei Ye
- The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China
| | - Guanzhou Wang
- The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China
| | - Wei Han
- The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China
| | - Zhizhong Wei
- The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China
| | - Bin Yin
- The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China
| | - Jiangang Yuan
- The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China
| | - Boqin Qiang
- The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China
| | - Xiaozhong Peng
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, China. .,The State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China.
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