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Dai Y, Zheng Y, Hu K, Chen J, Lu S, Li Q, Xiao J. Heterogeneity in the co-occurrence of depression and anxiety among adolescents: Results of latent profile analysis. J Affect Disord 2024; 357:77-84. [PMID: 38670464 DOI: 10.1016/j.jad.2024.04.065] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024]
Abstract
BACKGROUND Depression and anxiety co-occur frequently and there is heterogeneity in the co-occurrence of such symptoms; however, few previous studies investigated the heterogeneity based on person-centered perspectives in adolescents. The primary aim of our study was to explore it using latent profile analysis (LPA), a person-centered statistical approach. METHOD The Patient Health Questionnaire-9 (PHQ-9) and General Anxiety Disorder-7 (GAD-7) were used to examine depression and anxiety symptoms in 7422 Chinese adolescents from 23 primary and secondary schools. To investigate latent profiles and assess profile validity, we employed Latent Profile Analysis (LPA), multinomial logistic regression, and analysis of variance. RESULTS A three-profile model was suggested as the optimum: low (69.9 %), moderate (21.6 %), and high depression/anxiety (8.5 %). Female with higher negative cognitive bias and higher emotional regulation difficulty are more likely to be categorized in the high depression/anxiety group. Internet addiction, academic "Lying flat" and involution are significantly and positively linked with the severity of anxiety and depression. LIMITATIONS Reliance on self-reported measures may lead to response bias; the cross-sectional design limits our ability to study how symptom profiles and category membership change over time. CONCLUSIONS Three latent profiles of the co-occurrence of depression and anxiety presented a parallel pattern, which serves as a poignant reminder of the imperative need to identify Chinese adolescents who may be at elevated risk for depression and/or anxiety, and promoting intervention that are meticulously tailored to address the unique symptom presentations of each individual.
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Affiliation(s)
- Yuelian Dai
- Beijing Key Laboratory of Learning and Cognition and Department of Psychology, Capital Normal University, Beijing, China
| | - Ya Zheng
- Department of Psychology, Guangzhou University, Guangzhou, China
| | - Kesong Hu
- Department of Psychological Science, University of Arkansas, Little Rock, AR, USA
| | - Jingyan Chen
- Beijing Key Laboratory of Learning and Cognition and Department of Psychology, Capital Normal University, Beijing, China
| | - Shan Lu
- Beijing Key Laboratory of Learning and Cognition and Department of Psychology, Capital Normal University, Beijing, China; Center for Child Development, Capital Normal University, Beijing 100048, China.
| | - Qi Li
- Beijing Key Laboratory of Learning and Cognition and Department of Psychology, Capital Normal University, Beijing, China.
| | - Jing Xiao
- Beijing Key Laboratory of Learning and Cognition and Department of Psychology, Capital Normal University, Beijing, China.
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Zhang P, Zhang H, Li C, Yang B, Feng X, Cao J, Du W, Shahzad M, Khan A, Sun SC, Zhao X. Effects of Regulating Hippo and Wnt on the Development and Fate Differentiation of Bovine Embryo. Int J Mol Sci 2024; 25:3912. [PMID: 38612721 PMCID: PMC11011455 DOI: 10.3390/ijms25073912] [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: 03/03/2024] [Revised: 03/29/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
The improvement of in vitro embryo development is a gateway to enhance the output of assisted reproductive technologies. The Wnt and Hippo signaling pathways are crucial for the early development of bovine embryos. This study investigated the development of bovine embryos under the influence of a Hippo signaling agonist (LPA) and a Wnt signaling inhibitor (DKK1). In this current study, embryos produced in vitro were cultured in media supplemented with LPA and DKK1. We comprehensively analyzed the impact of LPA and DKK1 on various developmental parameters of the bovine embryo, such as blastocyst formation, differential cell counts, YAP fluorescence intensity and apoptosis rate. Furthermore, single-cell RNA sequencing (scRNA-seq) was employed to elucidate the in vitro embryonic development. Our results revealed that LPA and DKK1 improved the blastocyst developmental potential, total cells, trophectoderm (TE) cells and YAP fluorescence intensity and decreased the apoptosis rate of bovine embryos. A total of 1203 genes exhibited differential expression between the control and LPA/DKK1-treated (LD) groups, with 577 genes upregulated and 626 genes downregulated. KEGG pathway analysis revealed significant enrichment of differentially expressed genes (DEGs) associated with TGF-beta signaling, Wnt signaling, apoptosis, Hippo signaling and other critical developmental pathways. Our study shows the role of LPA and DKK1 in embryonic differentiation and embryo establishment of pregnancy. These findings should be helpful for further unraveling the precise contributions of the Hippo and Wnt pathways in bovine trophoblast formation, thus advancing our comprehension of early bovine embryo development.
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Affiliation(s)
- Peipei Zhang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Hang Zhang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Chongyang Li
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Baigao Yang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Xiaoyi Feng
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Jianhua Cao
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Weihua Du
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Muhammad Shahzad
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Adnan Khan
- Genome Analysis Laboratory of the Ministry of Agriculture, Agriculture Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xueming Zhao
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
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Komakech K, Nakiyingi L, Fred A, Achan B, Joloba M, Kirenga BJ, Ssengooba W. Effect of mixed Mycobacterium tuberculosis infection on rapid molecular diagnostics among patients starting MDR-TB treatment in Uganda. BMC Infect Dis 2024; 24:70. [PMID: 38200467 PMCID: PMC10782568 DOI: 10.1186/s12879-023-08968-5] [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: 09/04/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND Mixed M. tuberculosis (MTB) infection occurs when one is infected with more than one clonally distinct MTB strain. This form of infection can assist MTB strains to acquire additional mutations, facilitate the spread of drug-resistant strains, and boost the rate of treatment failure. Hence, the presence of mixed MTB infection could affect the performance of some rapid molecular diagnostic tests such as Line Probe Assay (LPA) and GeneXpert MTB/RIF (Xpert) assays. METHODS This was a cross-sectional study that used sputum specimens collected from participants screened for STREAM 2 clinical trial between October 2017 and October 2019. Samples from 62 MTB smear-positive patients and rifampicin-resistant patients from peripheral health facilities were processed for Xpert and LPA as screening tests for eligibility in the trial. From November 2020, processed stored sputum samples were retrieved and genotyped to determine the presence of mixed-MTB strain infection using a standard 24-locus Mycobacterial Interspersed Repetitive Unit-Variable Number Tandem-Repeat (MIRU-VNTR). Samples with at least 20/24 MIRU-VNTR loci amplified were considered for analysis. Agar proportional Drug Susceptibility Test (DST) was performed on culture isolates of samples that had discordant results between LPA and Xpert. The impact of the presence of mixed-MTB strain on Xpert and LPA test interpretation was analyzed. RESULTS A total of 53/62 (85%) samples had analyzable results from MIRU-VNTR. The overall prevalence of mixed-MTB infection was 5/53 (9.4%). The prevalence was highest among male's 3/31 (9.7%) and among middle-aged adults, 4/30 (33.3%). Lineage 4 of MTB contributed 3/5 (60.0%) of the mixed-MTB infection prevalence. Having mixed MTB strain infection increased the odds of false susceptible Xpert test results (OR 7.556, 95% CI 0.88-64.44) but not for LPA. Being HIV-positive (P = 0.04) independently predicted the presence of mixed MTB infection. CONCLUSIONS The presence of mixed-MTB strain infection may affect the performance of the GeneXpert test but not for LPA. For patients with high pre-test probability of rifampicin resistance, an alternative rapid method such as LPA should be considered.
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Affiliation(s)
- Kevin Komakech
- Department of Medical Microbiology, Mycobacteriology (BSL-3) Laboratory, Makerere University, Kampala, Uganda
| | - Lydia Nakiyingi
- Department of Medicine, School of Medicine, Makerere University, Kampala, Uganda
| | - Ashab Fred
- Department of Immunology and Molecular Biology, Makerere University, Kampala, Uganda
| | - Beatrice Achan
- Department of Medical Microbiology, Mycobacteriology (BSL-3) Laboratory, Makerere University, Kampala, Uganda
| | - Moses Joloba
- Department of Immunology and Molecular Biology, Makerere University, Kampala, Uganda
| | - Bruce J Kirenga
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Willy Ssengooba
- Department of Medical Microbiology, Mycobacteriology (BSL-3) Laboratory, Makerere University, Kampala, Uganda.
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda.
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Goldman A, Mullokandov M, Zaltsman Y, Regev L, Levin-Zaidman S, Gross A. MTCH2 cooperates with MFN2 and lysophosphatidic acid synthesis to sustain mitochondrial fusion. EMBO Rep 2024; 25:45-67. [PMID: 38177900 PMCID: PMC10897490 DOI: 10.1038/s44319-023-00009-1] [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: 06/01/2023] [Revised: 10/27/2023] [Accepted: 11/07/2023] [Indexed: 01/06/2024] Open
Abstract
Fusion of the outer mitochondrial membrane (OMM) is regulated by mitofusin 1 (MFN1) and 2 (MFN2), yet the differential contribution of each of these proteins is less understood. Mitochondrial carrier homolog 2 (MTCH2) also plays a role in mitochondrial fusion, but its exact function remains unresolved. MTCH2 overexpression enforces MFN2-independent mitochondrial fusion, proposedly by modulating the phospholipid lysophosphatidic acid (LPA), which is synthesized by glycerol-phosphate acyl transferases (GPATs) in the endoplasmic reticulum (ER) and the OMM. Here we report that MTCH2 requires MFN1 to enforce mitochondrial fusion and that fragmentation caused by loss of MTCH2 can be specifically counterbalanced by overexpression of MFN2 but not MFN1, partially independent of its GTPase activity and mitochondrial localization. Pharmacological inhibition of GPATs (GPATi) or silencing ER-resident GPATs suppresses MFN2's ability to compensate for the loss of MTCH2. Loss of either MTCH2, MFN2, or GPATi does not impair stress-induced mitochondrial fusion, whereas the combined loss of MTCH2 and GPATi or the combined loss of MTCH2 and MFN2 does. Taken together, we unmask two cooperative mechanisms that sustain mitochondrial fusion.
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Affiliation(s)
- Andres Goldman
- Montreal Neurological Institute, McGill University, Montreal, Canada.
| | - Michael Mullokandov
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Yehudit Zaltsman
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Limor Regev
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Smadar Levin-Zaidman
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, Israel
| | - Atan Gross
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel.
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Xu X, Liang F, Chen J, Chen F, Kong L, Ding Y. Association of FHL5 and LPA genetic polymorphisms with diabetes mellitus risk: a case-control study. Aging Male 2023; 26:2235005. [PMID: 37452735 DOI: 10.1080/13685538.2023.2235005] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023] Open
Abstract
BACKGROUND China is one of the countries with the fastest growing prevalence of diabetes mellitus (DM) in the world. This study intended to investigate the association of single nucleotide polymorphisms (SNPs) of FHL5 and LPA with DM risk in the Chinese population. METHODS This case-control study involved 1,420 Chinese individuals (710 DM patients and 710 controls). Four candidate loci (rs2252816/rs9373985 in FHL5 and rs3124784/rs7765781 in LPA) were successfully screened. The association of SNPs with DM risk was assessed by logistic regression analysis. Differences in clinical characteristics among subjects with different genotypes were analyzed by one-way analysis of variance. RESULTS Overall analysis indicated that rs3124784 was associated with an increased risk of DM. Stratification analysis showed that rs3124784 significantly increased DM risk in different subgroups (male, non-smoking, non-drinking, and BMI > 24), while rs7765781 increased DM risk only in participants with BMI ≤ 24. Rs2252816 was associated with the course of DM. We also found that rs2252816 GG genotype and rs9373985 GG genotype were linked to the increased cystatin c in DM patients. CONCLUSION The genetic polymorphisms of LPA may be associated with DM risk in the Chinese population, which will provide useful information for the prevention and diagnosis of DM.
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Affiliation(s)
- Xuezhong Xu
- Department of Endocrinology, People's Hospital of Wanning, Wanning, Hainan, China
| | - Fangyun Liang
- Department of Endocrinology, People's Hospital of Wanning, Wanning, Hainan, China
| | - Jinmei Chen
- Department of Endocrinology, People's Hospital of Wanning, Wanning, Hainan, China
| | - Feihong Chen
- Department of Endocrinology, People's Hospital of Wanning, Wanning, Hainan, China
| | - Lingyi Kong
- Department of Endocrinology, People's Hospital of Wanning, Wanning, Hainan, China
| | - Yipeng Ding
- Department of Pulmonary and Critical Care Medicine, Hainan Affiliated Hospital of Hainan Medical University, Hainan General Hospital, Haikou, Hainan, China
- Department of General Practice, Hainan Affiliated Hospital of Hainan Medical University, Hainan General Hospital, Haikou, Hainan, China
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Bai R, Pei J, Pei S, Cong X, Chun J, Wang F, Chen X. LPA2 Alleviates Septic Acute Lung Injury via Protective Endothelial Barrier Function Through Activation of PLC-PKC-FAK. J Inflamm Res 2023; 16:5095-5109. [PMID: 38026263 PMCID: PMC10640838 DOI: 10.2147/jir.s419578] [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: 06/27/2023] [Accepted: 09/27/2023] [Indexed: 12/01/2023] Open
Abstract
Background Increased endothelial permeability of pulmonary vessels is a primary pathological characteristic of septic acute lung injury (ALI). Previously, elevated lysophosphatidic acid (LPA) levels and LPA2 (an LPA receptor) expression have been found in the peripheral blood and lungs of septic mice, respectively. However, the specific role of LPA2 in septic ALI remains unclear. Methods A lipopolysaccharide (LPS)-induced model of sepsis was established in wild-type (WT) and global LPA2 knockout (Lpar2-/-) mice. We examined mortality, lung injury, assessed endothelial permeability through Evans blue dye (EBD) assay in vivo, and transendothelial electrical resistance (TEER) of mouse lung microvascular endothelial cells (MLMECs) in vitro. Enzyme-linked immunosorbent assay (ELISA), histopathological, immunofluorescence, immunohistochemistry, and Western blot were employed to investigate the role of LPA2 in septic ALI. Results Lpar2 deficiency increased vascular endothelial permeability, impaired lung injury, and increased mortality. Histological examination revealed aggravated inflammation, edema, hemorrhage and alveolar septal thickening in the lungs of septic Lpar2-/- mice. In vitro, loss of Lpar2 resulted in increased permeability of MLMECs. Pharmacological activation of LPA2 by the agonist DBIBB led to significantly reduced inflammation, edema and hemorrhage, as well as increased expression of the vascular endothelial tight junction (TJ) protein zonula occludens-1 (ZO-1) and claudin-5, as well as the adheren junction (AJ) protein VE-cadherin. Moreover, DBIBB treatment was found to alleviate mortality by protecting against vascular endothelial permeability. Mechanistically, we demonstrated that vascular endothelial permeability was alleviated through LPA-LPA2 signaling via the PLC-PKC-FAK pathway. Conclusion These data provide a novel mechanism of endothelial barrier protection via PLC-PKC-FAK pathway and suggest that LPA2 may contribute to the therapeutic effects of septic ALI.
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Affiliation(s)
- Ruifeng Bai
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Jianqiu Pei
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Shengqiang Pei
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Xiangfeng Cong
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Jerold Chun
- Neuroscience Drug Discovery, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Fang Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- Diagnostic Laboratory Service, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- Department of Clinical Laboratory, Fuwai Yunnan Cardiovascular Hospital, Kunming, People’s Republic of China
| | - Xi Chen
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- Diagnostic Laboratory Service, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
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Wang S, Arizmendi CJ, Blalock DV, Chen D, Lin L, Thissen D, Huang IC, DeWalt DA, Reeve BB. Health-related quality of life profiles in adolescents and young adults with chronic conditions. Qual Life Res 2023; 32:3171-3183. [PMID: 37340132 DOI: 10.1007/s11136-023-03463-5] [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] [Accepted: 06/11/2023] [Indexed: 06/22/2023]
Abstract
PURPOSE To assess health-related quality of life (HRQOL) among adolescents and young adults (AYAs) with chronic conditions. METHODS AYAs (N = 872) aged 14-20 years completed NIH's Patient-Reported Outcomes Measurement Information System® (PROMIS®) measures of physical function, pain interference, fatigue, social health, depression, anxiety, and anger. Latent profile analysis (LPA) was used to group AYAs into HRQOL profiles using PROMIS T-scores. The optimal number of profiles was determined by model fit statistics, likelihood ratio test, and entropy. Multinomial logistic regression models were used to examine how LPA's HRQOL profile membership was associated with patient demographic and chronic conditions. The model prediction accuracy on profile membership was evaluated using Huberty's I index with a threshold of 0.35 for good effect. RESULTS A 4-profile LPA model was selected. A total of 161 (18.5%), 256 (29.4%), 364 (41.7%), and 91 (10.4%) AYAs were classified into Minimal, Mild, Moderate, and Severe HRQOL Impact profiles. AYAs in each profile had distinctive mean scores with over a half standard deviation (5-points in PROMIS T-scores) of difference between profiles across most HRQOL domains. AYAs who were female or had conditions such as mental health condition, hypertension, and self-reported chronic pain were more likely to be in the Severe HRQOL Impact profile. The Huberty's I index was 0.36. CONCLUSIONS Approximately half of AYAs with a chronic condition experience moderate to severe HRQOL impact. The availability of risk prediction models for HRQOL impact will help to identify AYAs who are in greatest need of closer clinical care follow-up.
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Affiliation(s)
- Suwei Wang
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, 215 Morris Street; Suite 230, DUMC 104023, Durham, NC, 27701, USA
| | - Cara J Arizmendi
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, 215 Morris Street; Suite 230, DUMC 104023, Durham, NC, 27701, USA
| | - Dan V Blalock
- Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, USA
- Health Services Research and Development, Durham Veterans Affairs Medical Center, Durham, NC, USA
| | - Dandan Chen
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, 215 Morris Street; Suite 230, DUMC 104023, Durham, NC, 27701, USA
| | - Li Lin
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, 215 Morris Street; Suite 230, DUMC 104023, Durham, NC, 27701, USA
| | - David Thissen
- Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - I-Chan Huang
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Darren A DeWalt
- Department of Medicine, University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC, USA
| | - Bryce B Reeve
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, 215 Morris Street; Suite 230, DUMC 104023, Durham, NC, 27701, USA.
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA.
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Komakech K, Nakiyingi L, Fred A, Achan B, Joloba M, Kirenga BJ, Ssengooba W. Effect of mixed Mycobacterium tuberculosis infection on rapid molecular diagnostics among patients starting MDR-TB treatment in Uganda. Res Sq 2023:rs.3.rs-3324330. [PMID: 37841871 PMCID: PMC10571598 DOI: 10.21203/rs.3.rs-3324330/v1] [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] [Indexed: 10/17/2023]
Abstract
Background We evaluated the effect of mixed-MTB strain infection on the performance of Line Probe Assay (LPA) and GeneXpert MTB/RIF (Xpert) assays among patients initiating MDR-TB treatment in Uganda. Methods This was a cross-sectional study using sputum specimens collected from participants screened for STREAM 2 clinical trial between October 2017 and October 2019. Samples from 62 MTB smear-positive patients and rifampicin-resistant patients from the peripheral health facilities were processed for Xpert and LPA as screening tests for eligibility in the trial. From November 2020, processed stored sputum samples were retrieved and genotyped to determine the presence of mixed-MTB strain infection using a standard 24-locus Mycobacterial Interspersed Repetitive Unit-Variable Number Tandem-Repeat (MIRU-VNTR). Samples with at least 20/24 MIRU-VNTR loci amplified were considered for analysis. Agar proportional Drug Susceptibility Test (DST) was performed on culture isolates of samples that had discordant results between LPA and Xpert. The impact of the presence of mixed-MTB strain on Xpert and LPA test interpretation was analyzed. Results A total of 53/62 (85%) samples had analyzable results from MIRU-VNTR. The overall prevalence of mixed-MTB infection was 5/53 (9.4%). The prevalence was highest among males 3/33 (9.7%) and among middle-aged adults, 4/30 (13.3%). Lineage 4 of MTB contributed 3/33 (9.1%) of the mixed-MTB infection prevalence. Having mixed MTB strain infection increased the odds of false susceptible Xpert test results (OR 7.556, 95% CI 0.88-64.44) but not for LPA. Being HIV-positive (P=0.04) independently predicted the presence of mixed MTB infection. Conclusions The presence of mixed-MTB strain infection may affect the performance of the GeneXpert test but not for LPA. For patients with high pre-test probability of rifampicin resistance, an alternative rapid method such as LPA should be considered.
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Affiliation(s)
| | | | | | | | | | - Bruce J Kirenga
- Makerere University Lung Institute, Makerere University College of Health Sciences
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9
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Davis SN. Patterns of housework performance in the United States before, during, and after the Great Recession. Front Sociol 2023; 8:1153321. [PMID: 37808427 PMCID: PMC10556670 DOI: 10.3389/fsoc.2023.1153321] [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] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 08/17/2023] [Indexed: 10/10/2023]
Abstract
Housework is a key area of research across many academic fields as it represents the intersection of micro- and macro-level gender dynamics. Despite many shifts in both women's and men's economic activities, and men's changing gender beliefs, women remain largely responsible for the management and performance of domestic labor. Given the relationship between paid employment and household work, this research describes patterns of women's and men's housework before, during, and after the Great Recession. Using American Time Use Survey data, I perform latent profile analysis to document the distributions of housework tasks and time for women and men across these three time periods. While women perform the majority of housework across the time frame, women and men converge in their time during the Recession. Further, men's time becomes more varied and more similar to women's Post-Recession. The findings in this research brief highlight the connections between macro-level change and micro-level behavior.
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Affiliation(s)
- Shannon N. Davis
- Office of Faculty and Academic Affairs, George Mason University Korea, Incheon, Republic of Korea
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Curtoni A, Cordovana M, Bondi A, Scaiola F, Criscione G, Ghibaudo D, Pastrone L, Zanotto E, Camaggi A, Caroppo MS, Kostrzewa M, Cavallo R, Costa C. Application of FT-IR Spectroscopy for Mycobacterium abscessus complex subspecies differentiation. J Microbiol Methods 2023; 212:106792. [PMID: 37517511 DOI: 10.1016/j.mimet.2023.106792] [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: 06/12/2023] [Revised: 07/27/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
Mycobacterium abscessus complex (MABSC) subspecies differentiation improves patients' therapy and outcome. Fourier-Transform-Infrared Spectroscopy (FT-IRS) was applied for subspecies discrimination of 15 strains on different media: Löwenstein-Jensen showed the best resolution power; Linear Discriminant Analysis model differentiated M. abscessus susbsp. abscessus from M. abscessus subsp. massiliense. FT-IRS has a potential role in rapidly MABSC subspecies identification.
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Affiliation(s)
- Antonio Curtoni
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, Turin, Italy; Department of Public Health and Paediatrics, University of Turin, Turin, Italy
| | | | - Alessandro Bondi
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, Turin, Italy; Department of Public Health and Paediatrics, University of Turin, Turin, Italy.
| | - Francesca Scaiola
- Department of Public Health and Paediatrics, University of Turin, Turin, Italy
| | - Giulia Criscione
- Department of Public Health and Paediatrics, University of Turin, Turin, Italy
| | - Davide Ghibaudo
- Department of Public Health and Paediatrics, University of Turin, Turin, Italy
| | - Lisa Pastrone
- Department of Public Health and Paediatrics, University of Turin, Turin, Italy
| | - Elisa Zanotto
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, Turin, Italy
| | - Anna Camaggi
- Microbiology and Virology Unit, Azienda Ospedaliero-Universitaria Maggiore della Carità di Novara, Novara, Italy
| | - Maria Simona Caroppo
- Microbiology and Virology Unit, Azienda Ospedaliero-Universitaria Maggiore della Carità di Novara, Novara, Italy
| | - Markus Kostrzewa
- Department of Public Health and Paediatrics, University of Turin, Turin, Italy
| | - Rossana Cavallo
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, Turin, Italy; Department of Public Health and Paediatrics, University of Turin, Turin, Italy
| | - Cristina Costa
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, Turin, Italy; Department of Public Health and Paediatrics, University of Turin, Turin, Italy
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11
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Schwaninger G, Forer L, Ebenbichler C, Dieplinger H, Kronenberg F, Zschocke J, Witsch-Baumgartner M. Filling the gap: Genetic risk assessment in hypercholesterolemia using LDL-C and LPA genetic scores. Clin Genet 2023. [PMID: 37417318 DOI: 10.1111/cge.14387] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/11/2023] [Accepted: 05/29/2023] [Indexed: 07/08/2023]
Abstract
Routine genetic testing in hypercholesterolemia patients reveals a causative monogenic variant in less than 50% of affected individuals. Incomplete genetic characterization is partly due to polygenic factors influencing low-density-lipoprotein-cholesterol (LDL-C). Additionally, functional variants in the LPA gene affect lipoprotein(a)-associated cholesterol concentrations but are difficult to determine due to the complex structure of the LPA gene. In this study we examined whether complementing standard sequencing with the analysis of genetic scores associated with LDL-C and Lp(a) concentrations improves the diagnostic output in hypercholesterolemia patients. 1.020 individuals including 252 clinically diagnosed hypercholesterolemia patients from the FH Register Austria were analyzed by massive-parallel-sequencing of candidate genes combined with array genotyping, identifying nine novel variants in LDLR. For each individual, validated genetic scores associated with elevated LDL-C and Lp(a) were calculated based on imputed genotypes. Integrating these scores especially the score for Lp(a) increased the proportion of individuals with a clearly defined disease etiology to 68.8% compared to 46.6% in standard genetic testing. The study highlights the major role of Lp(a) in disease etiology in clinically diagnosed hypercholesterolemia patients, of which parts are misclassified. Screening for monogenic causes of hypercholesterolemia and genetic scores for LDL-C and Lp(a) permits more precise diagnosis, allowing individualized treatment.
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Affiliation(s)
- Gunda Schwaninger
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Lukas Forer
- Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christoph Ebenbichler
- University Clinic for Internal Medicine I, Medical University of Innsbruck, Innsbruck, Austria
| | - Hans Dieplinger
- Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Florian Kronenberg
- Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Johannes Zschocke
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
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12
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Dahiya B, Mehta N, Soni A, Mehta PK. Diagnosis of extrapulmonary tuberculosis by GeneXpert MTB/RIF Ultra assay. Expert Rev Mol Diagn 2023; 23:561-582. [PMID: 37318829 DOI: 10.1080/14737159.2023.2223980] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 02/15/2023] [Accepted: 06/06/2023] [Indexed: 06/17/2023]
Abstract
INTRODUCTION Diagnosis of extrapulmonary tuberculosis (EPTB) is an arduous task owing to different anatomical locations, unusual clinical presentations, and sparse bacillary load in clinical specimens. Although GeneXpert® MTB/RIF is a windfall in TB diagnostics including EPTB, it yields low sensitivities but high specificities in many EPTB specimens. To further improve the sensitivity of GeneXpert®, GeneXpert® Ultra, a fully nested real-time PCR targeting IS6110, IS1081 and rpoB (Rv0664) has been endorsed by the WHO (2017), wherein melt curve analysis is utilized to detect rifampicin-resistance (RIF-R). AREA COVERED We described the assay chemistry/work design of Xpert Ultra and evaluated its performance in several EPTB types, that is, TB lymphadenitis, TB pleuritis, TB meningitis, and so on, against the microbiological reference standard or composite reference standard. Notably, Xpert Ultra exhibited better sensitivities than Xpert, but mostly at the compensation of specificity values. Moreover, Xpert Ultra exhibited low false-negative and false-positive RIF-R results, compared with Xpert. We also detailed other molecular tests, that is, Truenat MTBTM/TruPlus, commercial real-time PCR, line probe assay, and so on, for EPTB diagnosis. EXPERT OPINION A combination of clinical features, imaging, histopathological findings, and Xpert Ultra are adequate for definite EPTB diagnosis so as to initiate an early anti-tubercular therapy.
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Affiliation(s)
- Bhawna Dahiya
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, India
| | - Neeru Mehta
- Department of Medical Electronics, Ambedkar Delhi Skill & Entrepreneurship University, Shakarpur, New Delhi, India
| | - Aishwarya Soni
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, India
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonipat, India
| | - Promod K Mehta
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, India
- Microbiology Department, Faculty of Allied Health Sciences, SGT University, Budhera, Gurgaon, India
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13
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Mieno MN, Yamasaki M, Kuchiba A, Yamaji T, Ide K, Tanaka N, Sawada N, Inoue M, Tsugane S, Sawabe M, Iwasaki M. Lack of significant associations between single nucleotide polymorphisms in LPAL2-LPA genetic region and all cancer incidence and mortality in Japanese population: The Japan public health center-based prospective study. Cancer Epidemiol 2023; 85:102395. [PMID: 37321067 DOI: 10.1016/j.canep.2023.102395] [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: 01/24/2023] [Revised: 05/02/2023] [Accepted: 05/25/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND High lipoprotein (a) level is an established cardiovascular risk, but its association with non-cardiovascular diseases, especially cancer, is controversial. Serum lipoprotein (a) levels vary widely by genetic backgrounds and are largely determined by the genetic variations of apolipoprotein (a) gene, LPA. In this study, we investigate the association between SNPs in LPA region and cancer incidence and mortality in Japanese. METHODS A genetic cohort study was conducted utilizing the data from 9923 participants in the Japan Public Health Center-based Prospective Study (JPHC Study). Twenty-five SNPs in the LPAL2-LPA region were selected from the genome-wide genotyped data. Cox regression analysis adjusted for the covariates and competing risks of death from other causes, were used to estimate the relative risk (hazard ratios (HR) with 95% confidence intervals (CI)) of overall and site-specific cancer incidence and mortality, for each SNP. RESULTS No significant association was found between SNPs in the LPAL2-LPA region and cancer incidence or mortality (overall/site-specific cancer). In men, however, HRs for stomach cancer incidence of 18SNPs were estimated higher than 1.5 (e.g., 2.15 for rs13202636, model free, 95%CI: 1.28-3.62) and those for stomach cancer mortality of 2SNPs (rs9365171, rs1367211) were estimated 2.13 (recessive, 95%CI:1.04-4.37) and 1.61 (additive, 95%CI: 1.00-2.59). Additionally, the minor allele for SNP rs3798220 showed increased death risk from colorectal cancer (CRC) in men (HR: 3.29, 95% CI:1.59 - 6.81) and decreased CRC incidence risk in women (HR: 0.46, 95%CI: 0.22-0.94). Minor allele carrier of any of 4SNPs could have risk of prostate cancer incidence (e.g., rs9365171 dominant, HR: 1.71, 95%CI: 1.06-2.77). CONCLUSIONS None of the 25 SNPs in the LPAL2-LPA region was found to be significantly associated with cancer incidence or mortality. Considering the possible association between SNPs in LPAL2-LPA region and colorectal, prostate and stomach cancer incidence or mortality, further analysis using different cohorts is warranted.
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Affiliation(s)
- Makiko Naka Mieno
- Department of Medical Informatics, Center for Information, Jichi Medical University, Shimotsuke 329-0498, Japan; Health Data Science Research Section, Healthy Aging Innovation Center, Tokyo Metropolitan Geriatric Research Institute, Tokyo 173-0015, Japan
| | - Maria Yamasaki
- Health Data Science Research Section, Healthy Aging Innovation Center, Tokyo Metropolitan Geriatric Research Institute, Tokyo 173-0015, Japan
| | - Aya Kuchiba
- Biostatistics Division, Center for Research Administration and Support/Division of Biostatistical Research, Institute for Cancer Control, National Cancer Center, Tokyo 104-0045, Japan; Graduate School of Health Innovation, Kanagawa University of Human Services, Kanagawa, 210-0821, Japan
| | - Taiki Yamaji
- Division of Epidemiology, National Cancer Center Institute for Cancer Control, Tokyo 104-0045, Japan.
| | - Keigo Ide
- Health Data Science Research Section, Healthy Aging Innovation Center, Tokyo Metropolitan Geriatric Research Institute, Tokyo 173-0015, Japan; Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo 162-8480, Japan
| | - Noriko Tanaka
- Health Data Science Research Section, Healthy Aging Innovation Center, Tokyo Metropolitan Geriatric Research Institute, Tokyo 173-0015, Japan.
| | - Norie Sawada
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, Tokyo 104-0045, Japan
| | - Manami Inoue
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, Tokyo 104-0045, Japan; Division of Prevention, National Cancer Center Institute for Cancer Control, Tokyo 104-0045, Japan
| | - Shoichiro Tsugane
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, Tokyo 104-0045, Japan; National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo 162-8636, Japan
| | - Motoji Sawabe
- Department of Molecular Pathology, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
| | - Motoki Iwasaki
- Division of Epidemiology, National Cancer Center Institute for Cancer Control, Tokyo 104-0045, Japan; Division of Cohort Research, National Cancer Center Institute for Cancer Control, Tokyo 104-0045, Japan
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Gopalaswamy R, Palani N, Viswanathan D, Preysingh B, Rajendran S, Vijayaraghavan V, Thangavel K, Vadivel SD, Stanley H, Thiruvengadam K, Jayabal L, Murugesan K, Rathinam S, Frederick A, Sivaramakrishnan G, Padmapriyadarsini C, Shanmugam S. Resistance Profiles to Second-Line Anti-Tuberculosis Drugs and Their Treatment Outcomes: A Three-Year Retrospective Analysis from South India. Medicina (Kaunas) 2023; 59:1005. [PMID: 37374209 DOI: 10.3390/medicina59061005] [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] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/12/2023] [Accepted: 05/19/2023] [Indexed: 06/29/2023]
Abstract
Background: Patients with first-line drug resistance (DR) to rifampicin (RIF) or isoniazid (INH) as a first-line (FL) line probe assay (LPA) were subjected to genotypic DST using second-line (SL) LPA to identify SL-DR (including pre-XDR) under the National TB Elimination Program (NTEP), India. SL-DR patients were initiated on different DR-TB treatment regimens and monitored for their outcomes. The objective of this retrospective analysis was to understand the mutation profile and treatment outcomes of SL-DR patients. Materials and Methods: A retrospective analysis of mutation profile, treatment regimen, and treatment outcome was performed for SL-DR patients who were tested at ICMR-NIRT, Supra-National Reference Laboratory, Chennai between the years 2018 and 2020. All information, including patient demographics and treatment outcomes, was extracted from the NTEP Ni-kshay database. Results: Between 2018 and 2020, 217 patients out of 2557 samples tested were identified with SL-DR by SL-LPA. Among them, 158/217 were FQ-resistant, 34/217 were SLID-resistant, and 25/217 were resistant to both. D94G (Mut3C) of gyrA and a1401g of rrs were the most predominant mutations in the FQ and SLID resistance types, respectively. Favorable (cured and treatment complete) and unfavorable outcomes (died, lost to follow up, treatment failed, and treatment regimen changed) were recorded in a total of 82/217 and 68/217 patients in the NTEP Ni-kshay database. Conclusions: As per the testing algorithm, SL- LPA is used for genotypic DST following identification of first-line resistance, for early detection of SL-DR in India. The fluoroquinolone resistance pattern seen in this study population corelates with the global trend. Early detection of fluoroquinolone resistance and monitoring of treatment outcome can help achieve better patient management.
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Affiliation(s)
- Radha Gopalaswamy
- ICMR-National Institute for Research in Tuberculosis, Chennai 600031, India
| | - Nandhini Palani
- ICMR-National Institute for Research in Tuberculosis, Chennai 600031, India
| | - Dinesh Viswanathan
- ICMR-National Institute for Research in Tuberculosis, Chennai 600031, India
| | - Bershila Preysingh
- ICMR-National Institute for Research in Tuberculosis, Chennai 600031, India
| | | | | | | | | | - Hannah Stanley
- ICMR-National Institute for Research in Tuberculosis, Chennai 600031, India
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15
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Wang S, Arizmendi CJ, Chen D, Lin L, Blalock DV, Huang IC, Thissen D, DeWalt DA, Pan W, Reeve BB. Applying latent profile analysis to identify adolescents and young adults with chronic conditions at risk for poor health-related quality of life. J Biopharm Stat 2023:1-14. [PMID: 37183393 DOI: 10.1080/10543406.2023.2210684] [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] [Indexed: 05/16/2023]
Abstract
The impact of chronic diseases on health-related quality of life (HRQOL) in adolescents and young adults (AYAs) is understudied. Latent profile analysis (LPA) can identify profiles of AYAs based on their HRQOL scores reflecting physical, mental, and social well-being. This paper will (1) demonstrate how to use LPA to identify profiles of AYAs based on their scores on multiple HRQOL indicators; (2) explore associations of demographic and clinical factors with LPA-identified HRQOL profiles of AYAs; and (3) provide guidance on the selection of adult or pediatric versions of Patient-Reported Outcomes Measurement Information System® (PROMIS®) in AYAs. A total of 872 AYAs with chronic conditions completed the adult and pediatric versions of PROMIS measures of anger, anxiety, depression, fatigue, pain interference, social health, and physical function. The optimal number of LPA profiles was determined by model fit statistics and clinical interpretability. Multinomial regression models examined clinical and demographic factors associated with profile membership. As a result of the LPA, AYAs were categorized into 3 profiles: Minimal, Moderate, and Severe HRQOL Impact profiles. Comparing LPA results using either the pediatric or adult PROMIS T-scores found approximately 71% of patients were placed in the same HRQOL profiles. AYAs who were female, had hypertension, mental health conditions, chronic pain, and those on medication were more likely to be placed in the Severe HRQOL Impact Profile. Our findings may facilitate clinicians to screen AYAs who may have low HRQOL due to diseases or treatments with the identified risk factors without implementing the HRQOL assessment.
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Affiliation(s)
- Suwei Wang
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
| | - Cara J Arizmendi
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
| | - Dandan Chen
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
| | - Li Lin
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
| | - Dan V Blalock
- Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, North Carolina, USA
- Health Services Research & Development, Durham Veterans Affairs Medical Center, Durham, North Carolina, USA
| | - I-Chan Huang
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - David Thissen
- Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Darren A DeWalt
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Wei Pan
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
- Division of Clinical Health Systems and Analytics in the School of Nursing, Duke University, Durham, North Carolina, USA
| | - Bryce B Reeve
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
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16
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Bangarwa M, Dhingra D, Mittal M, Saigal K, Ghosh A. Role of line probe assay in detection of Mycobacterium tuberculosis in children with pulmonary tuberculosis. Indian J Tuberc 2023; 70 Suppl 1:S100-S103. [PMID: 38110251 DOI: 10.1016/j.ijtb.2023.04.023] [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: 01/12/2023] [Revised: 04/11/2023] [Accepted: 04/25/2023] [Indexed: 12/20/2023]
Abstract
BACKGROUND India is the highest TB burden country in the world with almost 27 lakh cases reported in 2019. Pediatric tuberculosis in India accounts for almost 31% of global TB burden. Despite such high mortality and morbidity in children, diagnosis of pulmonary TB in children still remains very challenging. MATERIAL AND METHODS This cross-sectional study was conducted in a tertiary care hospital in Delhi, India. Children between 1 and 12 months with clinical suspicion of pulmonary tuberculosis who had not previously taken ATT were included. Early morning gastric aspirate samples were collected after overnight fasting, on two days. Both days sputum sample were subjected to sputum smear microscopy and one of the two samples was subjected to line probe assay (LPA), cartridge based nucleic acid amplification (CBNAAT) and mycobacterium growth in tube (MGIT-960). RESULTS 84 children with pulmonary tuberculosis were enrolled. The most common presenting complaint was fever seen in 83 patients (98.8%). Only 17 (20.24%) were sputum smear positive by Ziehl- Neelsen (ZN) staining. LPA was positive in 47 (55.95%) samples and among these positive samples both INH and RIF resistance was detected in 2 (4.26%) samples. CBNAAT was positive in 53 patients (63%). Growth in liquid culture media (MGIT 960) was observed in 44 (52.38%) samples. Among 17 smear positive samples, LPA was detected in 14 (82.35%) samples and among 67 smear negative sample LPA was detected in 33 (49.25%) samples. LPA had 63.46% sensitivity, 100% specificity in detecting mycobacterium tuberculosis. DISCUSSION WHO's recommendation for using LPAs has been limited to culture isolates or smear-positive sputum specimens. New data has since been generated on the use of LPAs as newer versions of LPA have been developed over past few years. Previous studies conducted using LPA version 1.0 reported much lower detection rate of mycobacterium tuberculosis in smear negative specimens. With the availability of newer versions such as Hain GenoTypeMTBDRplusversion 2 and Nipro NTM + MDRTB detection kit 2, the diagnostic utility of LPA may be enhanced.
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Affiliation(s)
- Manisha Bangarwa
- Department of Paediatrics, Chacha Nehru Bal Chikitsalya, New Delhi, 110031, Delhi
| | - Dhulika Dhingra
- Department of Paediatrics, Chacha Nehru Bal Chikitsalya, New Delhi, 110031, Delhi.
| | - Medha Mittal
- Department of Paediatrics, Chacha Nehru Bal Chikitsalya, New Delhi, 110031, Delhi
| | - Karnika Saigal
- Department of Microbiology, Chacha Nehru Bal Chikitsalya
| | - Arnab Ghosh
- Department of Microbiology, Post Graduate Institute of Medical Education & Research, Chandigarh, Delhi
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17
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Behera S, Belyeu JR, Chen X, Paulin LF, Nguyen NQH, Newman E, Mahmoud M, Menon VK, Qi Q, Joshi P, Marcovina S, Rossi M, Roller E, Han J, Onuchic V, Avery CL, Ballantyne CM, Rodriguez CJ, Kaplan RC, Muzny DM, Metcalf GA, Gibbs R, Yu B, Boerwinkle E, Eberle MA, Sedlazeck FJ. Identification of allele-specific KIV-2 repeats and impact on Lp(a) measurements for cardiovascular disease risk. bioRxiv 2023:2023.04.24.538128. [PMID: 37163057 PMCID: PMC10168217 DOI: 10.1101/2023.04.24.538128] [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] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The abundance of Lp(a) protein holds significant implications for the risk of cardiovascular disease (CVD), which is directly impacted by the copy number (CN) of KIV-2, a 5.5 kbp sub-region. KIV-2 is highly polymorphic in the population and accurate analysis is challenging. In this study, we present the DRAGEN KIV-2 CN caller, which utilizes short reads. Data across 166 WGS show that the caller has high accuracy, compared to optical mapping and can further phase ~50% of the samples. We compared KIV-2 CN numbers to 24 previously postulated KIV-2 relevant SNVs, revealing that many are ineffective predictors of KIV-2 copy number. Population studies, including USA-based cohorts, showed distinct KIV-2 CN, distributions for European-, African-, and Hispanic-American populations and further underscored the limitations of SNV predictors. We demonstrate that the CN estimates correlate significantly with the available Lp(a) protein levels and that phasing is highly important.
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Affiliation(s)
- S Behera
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | | | - X Chen
- Illumina Inc., San Diego, CA, USA
| | - L F Paulin
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - N Q H Nguyen
- School of Public Health, University of Texas Health Science Center at Houston, TX, USA
| | - E Newman
- Illumina Inc., San Diego, CA, USA
| | - M Mahmoud
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - V K Menon
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Q Qi
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - P Joshi
- Medpace Reference Laboratories, Cincinnati, OH, USA
| | - S Marcovina
- University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - M Rossi
- Illumina Inc., San Diego, CA, USA
| | - E Roller
- Illumina Inc., San Diego, CA, USA
| | - J Han
- Illumina Inc., San Diego, CA, USA
| | | | - C L Avery
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - C M Ballantyne
- Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - C J Rodriguez
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - R C Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Fred Hutchinson Cancer Center, Public Health Sciences Division, Seattle WA 98109
| | - D M Muzny
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - G A Metcalf
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - R Gibbs
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - B Yu
- School of Public Health, University of Texas Health Science Center at Houston, TX, USA
| | - E Boerwinkle
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- School of Public Health, University of Texas Health Science Center at Houston, TX, USA
| | | | - F J Sedlazeck
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Computer Science, Rice University, 6100 Main Street, Houston, TX, USA
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18
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Nagata W, Koizumi A, Nakagawa K, Takahashi S, Gotoh M, Satoh Y, Ishizuka T. Treatment with lysophosphatidic acid prevents microglial activation and depression-like behaviours in a murine model of neuropsychiatric systemic lupus erythematosus. Clin Exp Immunol 2023; 212:81-92. [PMID: 36718978 PMCID: PMC10128163 DOI: 10.1093/cei/uxad010] [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: 08/04/2022] [Revised: 01/05/2023] [Accepted: 01/30/2023] [Indexed: 02/01/2023] Open
Abstract
Neuropsychiatric systemic lupus erythematosus (NPSLE) is an incurable disease characterised by neuropsychiatric symptoms, particularly depression. Novel therapeutic options for NPSLE are urgently needed. Several previous reports have suggested that both microglial activation and impaired neurogenesis may be involved in the progression of depression. In contrast, the administration of lysophosphatidic acid (LPA) ameliorates depression and anxiety. Therefore, in the present study, we determined whether treatment with LPA affects microglial activation, impaired neurogenesis, and abnormal behaviour in MRL/lpr mice. In both tail suspension test and forced swim test, the MRL/lpr mice exhibited a significant increase in total immobility time compared with MRL/+ mice. Treatment with LPA significantly suppressed the prolonged immobility time in MRL/lpr mice. In contrast, pretreatment with ki16425 (a specific antagonist of LPA receptor 1 and 3) significantly reversed the effects of LPA. Furthermore, MRL/lpr mice exhibited impairments in spatial working memory and visual cognitive memory, which were suppressed by LPA treatment. The expression levels of TMEM119, CD68, GFAP, and caspase-3 in the hippocampus and prefrontal cortex of MRL/lpr mice were significantly higher than those in MRL/+ mice. Treatment with LPA inhibited these increases in MRL/lpr mice. Pretreatment with ki16425 reversed LPA-mediated inhibition of microglial activation. The quantity of sodium fluorescein that leaked into the brain tissues in MRL/lpr mice were significantly higher than that in MRL/+ mice. Treatment with LPA tended to decrease the sodium fluorescein leakage. These findings suggest that treatment with LPA may regulate microglial activation, which is important in the pathogenesis of NPSLE, as well as blood-brain-barrier weakening and abnormal behaviour.
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Affiliation(s)
- Wataru Nagata
- Department of Pharmacology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Akiho Koizumi
- Department of Pharmacology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Keiichi Nakagawa
- Department of Pharmacology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Sayaka Takahashi
- Department of Pharmacology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Mari Gotoh
- Department of Clinical Laboratory Medicine, Faculty of Medical Technology, Teikyo University, Itabashi, Tokyo, Japan
- Institute for Human Life Science, Ochanomizu University, Bunkyo, Tokyo, Japan
| | - Yasushi Satoh
- Department of Biochemistry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Toshiaki Ishizuka
- Department of Pharmacology, National Defense Medical College, Tokorozawa, Saitama, Japan
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19
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Farooqui AA, Farooqui T, Sun GY, Lin TN, Teh DBL, Ong WY. COVID-19, Blood Lipid Changes, and Thrombosis. Biomedicines 2023; 11:biomedicines11041181. [PMID: 37189799 DOI: 10.3390/biomedicines11041181] [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: 03/13/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 05/17/2023] Open
Abstract
Although there is increasing evidence that oxidative stress and inflammation induced by COVID-19 may contribute to increased risk and severity of thromboses, the underlying mechanism(s) remain to be understood. The purpose of this review is to highlight the role of blood lipids in association with thrombosis events observed in COVID-19 patients. Among different types of phospholipases A2 that target cell membrane phospholipids, there is increasing focus on the inflammatory secretory phospholipase A2 IIA (sPLA2-IIA), which is associated with the severity of COVID-19. Analysis indicates increased sPLA2-IIA levels together with eicosanoids in the sera of COVID patients. sPLA2 could metabolise phospholipids in platelets, erythrocytes, and endothelial cells to produce arachidonic acid (ARA) and lysophospholipids. Arachidonic acid in platelets is metabolised to prostaglandin H2 and thromboxane A2, known for their pro-coagulation and vasoconstrictive properties. Lysophospholipids, such as lysophosphatidylcholine, could be metabolised by autotaxin (ATX) and further converted to lysophosphatidic acid (LPA). Increased ATX has been found in the serum of patients with COVID-19, and LPA has recently been found to induce NETosis, a clotting mechanism triggered by the release of extracellular fibres from neutrophils and a key feature of the COVID-19 hypercoagulable state. PLA2 could also catalyse the formation of platelet activating factor (PAF) from membrane ether phospholipids. Many of the above lipid mediators are increased in the blood of patients with COVID-19. Together, findings from analyses of blood lipids in COVID-19 patients suggest an important role for metabolites of sPLA2-IIA in COVID-19-associated coagulopathy (CAC).
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Affiliation(s)
- Akhlaq A Farooqui
- Department of Molecular and Cellular Biochemistry, Ohio State University, Columbus, OH 43210, USA
| | - Tahira Farooqui
- Department of Molecular and Cellular Biochemistry, Ohio State University, Columbus, OH 43210, USA
| | - Grace Y Sun
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA
| | - Teng-Nan Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11929, Taiwan
| | - Daniel B L Teh
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119260, Singapore
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119260, Singapore
- Neurobiology Research Programme, Life Sciences Institute, National University of Singapore, Singapore 119260, Singapore
| | - Wei-Yi Ong
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119260, Singapore
- Neurobiology Research Programme, Life Sciences Institute, National University of Singapore, Singapore 119260, Singapore
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20
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Kinnunen U, Mäkikangas A. Longitudinal Profiles of Recovery-Enhancing Processes: Job-Related Antecedents and Well-Being Outcomes. Int J Environ Res Public Health 2023; 20:5382. [PMID: 37047996 PMCID: PMC10094142 DOI: 10.3390/ijerph20075382] [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] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
The present study aimed to examine longitudinal recovery profiles based on three recovery-enhancing processes, i.e., psychological detachment from work, physical exercise, and sleep. In addition, we examined whether job-related demands and resources predict profile membership and whether profile membership predicts well-being outcomes. The participants were Finnish employees (N = 664) who filled in an electronic questionnaire in three successive years. Latent profile analysis (LPA) revealed five stable profiles of recovery-enhancing processes across time: (1) physically inactive, highly detaching (15%), (2) impaired recovery processes (19%), (3) enhanced recovery processes (25%), (4) physically active, poorly detaching and sleeping (19%), and (5) physically active (29%). In addition, job-related antecedents and well-being outcomes showed unique differences between the five profiles identified. Altogether, our study takes recovery research a step forward in helping to understand how recovery-enhancing processes function simultaneously over the long-term and suggests that, from the perspective of well-being, detachment from work and good sleep are more crucial recovery processes than physical activity.
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Affiliation(s)
- Ulla Kinnunen
- Faculty of Social Sciences, Psychology, Tampere University, 33014 Tampere, Finland
| | - Anne Mäkikangas
- Faculty of Social Sciences, Work Research Centre, Tampere University, 33014 Tampere, Finland
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21
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Spackman E, Smillie LD, Frazier TW, Hardan AY, Alvares GA, Whitehouse A, Uljarević M. Profiles of circumscribed interests in autistic youth. Front Behav Neurosci 2023; 17:1037967. [PMID: 36844650 PMCID: PMC9947294 DOI: 10.3389/fnbeh.2023.1037967] [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: 09/06/2022] [Accepted: 01/18/2023] [Indexed: 02/11/2023] Open
Abstract
Circumscribed interests (CI) encompass a range of different interests and related behaviors that can be characterized by either a high intensity but otherwise usual topic [referred to as restricted interests (RI)] or by a focus on topics that are not salient outside of autism [referred to as unusual interests (UI)]. Previous research has suggested that there is pronounced variability across individuals in terms of the endorsement of different interests, however, this variability has not been quantified using formal subtyping approaches. Therefore, using Latent Profile Analysis in a sample of 1,892 autistic youth (Mage = 10.82, SDage = 4.14; 420 females), this study aimed to identify subgroups based on the RU and UI profiles. Three profiles of autistic individuals were identified. They were characterized as Low CI, Predominantly RI, and Predominantly UI. Importantly, profiles differed on several key demographic and clinical variables, including age, sex composition, IQ, language level, social and communication abilities, anxiety, and obsessive-compulsive behaviors. Although replication across other samples is needed, the profiles identified in this study are potentially promising for future research given their distinct profiles of RI and UI and unique patterns of associations with key cognitive and clinical variables. Therefore, this study represents an important initial step towards more individualized assessment and support for diverse presentations of CI in autistic youth.
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Affiliation(s)
- Emily Spackman
- Melbourne School of Psychological Sciences, University of Melbourne, Melbourne, VIC, Australia,*Correspondence: Emily Spackman
| | - Luke D. Smillie
- Melbourne School of Psychological Sciences, University of Melbourne, Melbourne, VIC, Australia
| | | | - Antonio Y. Hardan
- Psychiatry and Behavioral Sciences, Stanford Medicine, Stanford University, Stanford, CA, United States
| | - Gail A. Alvares
- UWA Centre for Child Health Research, University of Western Australia, Perth, WA, Australia
| | - Andrew Whitehouse
- UWA Centre for Child Health Research, University of Western Australia, Perth, WA, Australia
| | - Mirko Uljarević
- Melbourne School of Psychological Sciences, University of Melbourne, Melbourne, VIC, Australia,Psychiatry and Behavioral Sciences, Stanford Medicine, Stanford University, Stanford, CA, United States
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22
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Pastrone L, Curtoni A, Criscione G, Scaiola F, Bottino P, Guarrasi L, Iannaccone M, Timke M, Costa C, Cavallo R. Evaluation of Two Different Preparation Protocols for MALDI-TOF MS Nontuberculous Mycobacteria Identification from Liquid and Solid Media. Microorganisms 2023; 11:microorganisms11010120. [PMID: 36677412 PMCID: PMC9866535 DOI: 10.3390/microorganisms11010120] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/29/2022] [Accepted: 12/30/2022] [Indexed: 01/04/2023] Open
Abstract
Nontuberculous mycobacteria (NTM) identification is essential for establishing the relevance of the isolate and for appropriate antimicrobial therapy. Traditionally, NTM identification is performed by using Line Probe Assays (LPA), a costly and time-consuming technique requiring trained personnel. MALDI-TOF MS is a promising tool for NTM identification, and its use is rapidly growing. We evaluated the newly introduced MBT Mycobacteria kit (MBT) and the MycoEx preparation protocol (Bruker Daltonics, Germany) for NTM MALDI-TOF MS identification using LPA results as a reference. Fifty NTM grown on 7H11 agar and MGIT broth were analyzed with both protocols using the Bruker Microflex® LT MALDI-TOF MS (Bruker Daltonics) instrument. MBT and MycoEx provided identification results in 97.0% and 95.0% of the cases, respectively. With both protocols, 100% of the provided results agreed with LPA with no registered mismatch. MBT achieved an elevated number of highly probable identifications (88.0% vs. 83.0%) and a higher reproducibility rate of correct results (86.6% vs. 75.8%) in comparison to MycoEx. This study provides results about MBT performance for liquid and solid media, underlining the strengths and weakness under different conditions. Our results suggest that MALDI-TOF MS could provide a great advantage for timely and cost-saving NTM identification with potential implications for patient outcome.
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Affiliation(s)
- Lisa Pastrone
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Antonio Curtoni
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Correspondence: ; Tel.: +39-011-633-7005
| | - Giulia Criscione
- Department of Public Health and Paediatrics, University of Turin, 10126 Turin, Italy
| | - Francesca Scaiola
- Department of Public Health and Paediatrics, University of Turin, 10126 Turin, Italy
| | - Paolo Bottino
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Luisa Guarrasi
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Marco Iannaccone
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Markus Timke
- Bruker Daltonics GmbH & Co. KG, 28359 Bremen, Germany
| | - Cristina Costa
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Department of Public Health and Paediatrics, University of Turin, 10126 Turin, Italy
| | - Rossana Cavallo
- Microbiology and Virology Unit, University Hospital Città della Salute e della Scienza di Torino, 10126 Turin, Italy
- Department of Public Health and Paediatrics, University of Turin, 10126 Turin, Italy
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23
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Chhabra R, Guergues J, Wohlfahrt J, Rockfield S, Espinoza Gonzalez P, Rego S, Park MA, Berglund AE, Stevens SM, Nanjundan M. Deregulated expression of the 14q32 miRNA cluster in clear cell renal cancer cells. Front Oncol 2023; 13:1048419. [PMID: 37139155 PMCID: PMC10150008 DOI: 10.3389/fonc.2023.1048419] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 02/21/2023] [Indexed: 05/05/2023] Open
Abstract
Clear cell renal cell carcinomas (ccRCC) are characterized by arm-wide chromosomal alterations. Loss at 14q is associated with disease aggressiveness in ccRCC, which responds poorly to chemotherapeutics. The 14q locus contains one of the largest miRNA clusters in the human genome; however, little is known about the contribution of these miRNAs to ccRCC pathogenesis. In this regard, we investigated the expression pattern of selected miRNAs at the 14q32 locus in TCGA kidney tumors and in ccRCC cell lines. We demonstrated that the miRNA cluster is downregulated in ccRCC (and cell lines) as well as in papillary kidney tumors relative to normal kidney tissues (and primary renal proximal tubule epithelial (RPTEC) cells). We demonstrated that agents modulating expression of DNMT1 (e.g., 5-Aza-deoxycytidine) could modulate 14q32 miRNA expression in ccRCC cell lines. Lysophosphatidic acid (LPA, a lysophospholipid mediator elevated in ccRCC) not only increased labile iron content but also modulated expression of a 14q32 miRNA. Through an overexpression approach targeting a subset of 14q32 miRNAs (specifically at subcluster A: miR-431-5p, miR-432-5p, miR-127-3p, and miR-433-3p) in 769-P cells, we uncovered changes in cellular viability and claudin-1, a tight junction marker. A global proteomic approach was implemented using these miRNA overexpressing cell lines which uncovered ATXN2 as a highly downregulated target. Collectively, these findings support a contribution of miRNAs at 14q32 in ccRCC pathogenesis.
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Affiliation(s)
- Ravneet Chhabra
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
| | - Jennifer Guergues
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
| | - Jessica Wohlfahrt
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
| | - Stephanie Rockfield
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
- Department of Cell and Molecular Biology, St. Jude Children’s Research Hospital, Memphis, TN, United States
| | - Pamela Espinoza Gonzalez
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
| | - Shanon Rego
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
| | - Margaret A. Park
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
- Department of Gastrointestinal Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, United States
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, United States
| | - Anders E. Berglund
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, United States
| | - Stanley M. Stevens
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
| | - Meera Nanjundan
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, United States
- *Correspondence: Meera Nanjundan,
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24
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Kumari SL, Kongara S, Bhaskar K, Srikanti R, Bhushana Rao CRN, Sanjana PH. Outcomes and adherence of shorter MDR TB regimen in patients with multidrug resistant tuberculosis. Indian J Tuberc 2023; 70:103-6. [PMID: 36740304 DOI: 10.1016/j.ijtb.2022.03.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 03/25/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND In 2016 WHO guidelines conditionally recommended standardized shorter 9-12 months regimen for MDR-TB treatment. The objective is to study outcome analysis of cured, lost to follow-up, treatment completed, treatment failure and mortality of MDR Patients on shorter standardized MDR TB regimen. METHODS In this prospective study, 360 adults with confirmed Rifampicin Resistant pulmonary TB were studied between March 2018 to February 2020 at Department of Pulmonary Medicine, Guntur Medical College, Govt. Fever Hospital, Guntur. RESULTS Among 360 confirmed MDR Patients, 42.50% patients were cured, 41.60% completed treatment, 6.11% of them were lost to follow-up, 0.50% were considered as treatment failure and 9.10% of them were died. CONCLUSION Overall success with a standardized shorter MDR regimen was high with low treatment failure. When introducing shorter regimens base line drug susceptibility testing and minimizing missed doses are critical.
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25
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Vít O, Petrák J. Autotaxin and Lysophosphatidic Acid Signalling: the Pleiotropic Regulatory Network in Cancer. Folia Biol (Praha) 2023; 69:149-162. [PMID: 38583176 DOI: 10.14712/fb2023069050149] [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] [Indexed: 04/09/2024]
Abstract
Autotaxin, also known as ecto-nucleotide pyrophosphatase/phosphodiesterase family member 2, is a secreted glycoprotein that plays multiple roles in human physiology and cancer pathology. This protein, by converting lysophosphatidylcholine into lysophosphatidic acid, initiates a complex signalling cascade with significant biological implications. The article outlines the autotaxin gene and protein structure, expression regulation and physiological functions, but focuses mainly on the role of autotaxin in cancer development and progression. Autotaxin and lysophosphatidic acid signalling influence several aspects of cancer, including cell proliferation, migration, metastasis, therapy resistance, and interactions with the immune system. The potential of autotaxin as a diagnostic biomarker and promising drug target is also examined.
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Affiliation(s)
- Ondřej Vít
- BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czech Republic.
| | - Jiří Petrák
- BIOCEV, First Faculty of Medicine, Charles University, Vestec, Czech Republic
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26
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Zhao H, Jia P, Nanding K, Wu M, Bai X, Morigen M, Fan L. Lysophosphatidic acid suppresses apoptosis of high-grade serous ovarian cancer cells by inducing autophagy activity and promotes cell-cycle progression via EGFR-PI3K/Aurora-A Thr288-geminin dual signaling pathways. Front Pharmacol 2022; 13:1046269. [PMID: 36601056 PMCID: PMC9806123 DOI: 10.3389/fphar.2022.1046269] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 11/30/2022] [Indexed: 12/23/2022] Open
Abstract
Lysophosphatidic acid (LPA) and geminin are overexpressed in ovarian cancer, and increasing evidence supports their contribution to ovarian tumor development. Here, we reveal that geminin depletion induces autophagy suppression and enhances reactive oxygen species (ROS) production and apoptosis of high-grade serous ovarian cancer (HGSOC) cells. Bioinformatics analysis and pharmacological inhibition studies confirm that LPA activates geminin expression in the early S phase in HGSOC cells via the LPAR1/3/MMPs/EGFR/PI3K/mTOR pathway. Furthermore, LPA phosphorylates Aurora-A kinase on Thr288 through EGFR transactivation, and this event potentiates additional geminin stabilization. In turn, overexpressed and stabilized geminin regulates DNA replication, cell-cycle progression, and cell proliferation of HGSOC cells. Our data provide potential targets for enhancing the clinical benefit of HGSOC precision medicine.
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27
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Lim HK, Kim K, Son YK, Nah SY, Ahn SM, Song M. Gintonin stimulates dendritic growth in striatal neurons by activating Akt and CREB. Front Mol Neurosci 2022; 15:1014497. [PMID: 36385759 PMCID: PMC9643712 DOI: 10.3389/fnmol.2022.1014497] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 10/04/2022] [Indexed: 09/26/2023] Open
Abstract
Gintonin, a glycolipid protein conjugated with lysophosphatidic acid (LPA), is a newly identified compound extracted from Korean ginseng. LPA receptor isotypes exhibit high affinity for gintonin and mediate intracellular calcium signaling in various animal cell models. In this study, we found that gintonin induced the activation of Akt and cAMP-response element binding protein (CREB) in mouse striatal neurons, and chronic treatment with gintonin potently induced dendritic growth and filopodia formation. Gintonin-induced Akt/CREB activation and dendritic development were significantly impaired by LPA receptor (LPAR1/3) inhibition with Ki16425. Intriguingly, prolonged treatment with gintonin ameliorated the reduction in dendritic formation caused by Shank3 and Slitrk5 deficiency in the striatal neurons. In addition, gintonin and brain-derived neurotrophic factor (BDNF) had a synergistic effect on AKT/CREB activation and dendritic growth at suboptimal concentrations. These findings imply that gintonin-stimulated LPA receptors play a role in dendritic growth in striatal neurons and that they may act synergistically with BDNF, which is known to play a role in dendritogenesis.
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Affiliation(s)
- Hye Kyung Lim
- Department of Life Sciences, Yeungnam University, Gyeongsan, South Korea
| | - Kitaek Kim
- Department of Life Sciences, Yeungnam University, Gyeongsan, South Korea
| | - Youn Kyoung Son
- National Institute of Biological Resources, Incheon, South Korea
| | - Seung-Yeol Nah
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - Soo Min Ahn
- Department of Pediatric Surgery, Metabolic and Bariatric Surgery Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Minseok Song
- Department of Life Sciences, Yeungnam University, Gyeongsan, South Korea
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28
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Doerfler AM, Park SH, Assini JM, Youssef A, Saxena L, Yaseen AB, De Giorgi M, Chuecos M, Hurley AE, Li A, Marcovina SM, Bao G, Boffa MB, Koschinsky ML, Lagor WR. LPA disruption with AAV-CRISPR potently lowers plasma apo(a) in transgenic mouse model: A proof-of-concept study. Mol Ther Methods Clin Dev 2022; 27:337-51. [PMID: 36381302 DOI: 10.1016/j.omtm.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022]
Abstract
Lipoprotein(a) (Lp(a)) represents a unique subclass of circulating lipoprotein particles and consists of an apolipoprotein(a) (apo(a)) molecule covalently bound to apolipoprotein B-100. The metabolism of Lp(a) particles is distinct from that of low-density lipoprotein (LDL) cholesterol, and currently approved lipid-lowering drugs do not provide substantial reductions in Lp(a), a causal risk factor for cardiovascular disease. Somatic genome editing has the potential to be a one-time therapy for individuals with extremely high Lp(a). We generated an LPA transgenic mouse model expressing apo(a) of physiologically relevant size. Adeno-associated virus (AAV) vector delivery of CRISPR-Cas9 was used to disrupt the LPA transgene in the liver. AAV-CRISPR nearly completely eliminated apo(a) from the circulation within a week. We performed genome-wide off-target assays to determine the specificity of CRISPR-Cas9 editing within the context of the human genome. Interestingly, we identified intrachromosomal rearrangements within the LPA cDNA in the transgenic mice as well as in the LPA gene in HEK293T cells, due to the repetitive sequences within LPA itself and neighboring pseudogenes. This proof-of-concept study establishes the feasibility of using CRISPR-Cas9 to disrupt LPA in vivo, and highlights the importance of examining the diverse consequences of CRISPR cutting within repetitive loci and in the genome globally.
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29
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Lama C, Adhikari S, Sapkota S, Regmi RS, Ghimire GR, Banjara MR, Ghimire P, Rijal KR. Evaluation of Xpert MTB/RIF Assay, MTB Culture and Line Probe Assay for the Detection of MDR Tuberculosis in AFB Smear Negative Specimens. Diseases 2022; 10:82. [PMID: 36278581 PMCID: PMC9624312 DOI: 10.3390/diseases10040082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 08/28/2022] [Revised: 10/02/2022] [Accepted: 10/04/2022] [Indexed: 09/17/2023] Open
Abstract
The global burden of tuberculosis (TB), particularly with multidrug resistance (MDR), is escalating and has become a major health challenge. It is well known that acid-fast bacilli (AFB) smear-negative TB patients are the major source of spreading TB to healthy individuals when left untreated. Early diagnosis of TB and rapid detection of drug resistance are important for the proper management of drug-resistant TB (DR-TB). Therefore, a laboratory based cross-sectional study was conducted from July to December 2019 at the National Tuberculosis Centre, Thimi, Nepal, with the objective of evaluating the diagnostic performance of Xpert MTB/RIF assay, Mycobacterium tuberculosis (MTB) culture and line probe assay (LPA) for the detection of MDR-TB in AFB smear-negative sputum samples. We evaluated a total of 222 AFB smear-negative sputum specimens, of which 21.6% (n = 48) showed MTB positive with Xpert MTB/RIF assay and, while culturing on Lowenstein-Jensen (LJ) media, 21.2% (n = 47) were MTB culture positive. The sensitivity, specificity, PPV and NPV at 95% confidence interval of Xpert MTB/RIF assay on diagnosing M. tuberculosis from smear-negative specimens were 73% (57-84), 92% (87-96), 71% (59-81) and 93% (89-95), respectively. In addition, the sensitivity of Xpert MTB/RIF assay and LPA in detecting rifampicin resistance was 75% (42-94, 95% CI) and 91.67% (62-99, 95% CI), respectively. The current study also assessed a significant association between the occurrence of pulmonary tuberculosis with different age group, TB history and alcohol consumption. These findings indicate that Xpert MTB/RIF assay and LPA are appropriate methods for early detection and accurate diagnosis of TB and RIF mono-resistant cases.
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Affiliation(s)
- Chandri Lama
- Central Department of Microbiology, Tribhuvan University, Kirtipur 44618, Nepal
| | - Sanjib Adhikari
- Central Department of Microbiology, Tribhuvan University, Kirtipur 44618, Nepal
| | - Sanjeep Sapkota
- Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Ramesh Sharma Regmi
- Central Department of Microbiology, Tribhuvan University, Kirtipur 44618, Nepal
| | - Gokarna Raj Ghimire
- National TB Reference Laboratory, National Tuberculosis Centre, Thimi 44600, Nepal
| | - Megha Raj Banjara
- Central Department of Microbiology, Tribhuvan University, Kirtipur 44618, Nepal
| | - Prakash Ghimire
- Central Department of Microbiology, Tribhuvan University, Kirtipur 44618, Nepal
| | - Komal Raj Rijal
- Central Department of Microbiology, Tribhuvan University, Kirtipur 44618, Nepal
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30
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Toft-Bertelsen TL, Barbuskaite D, Heerfordt EK, Lolansen SD, Andreassen SN, Rostgaard N, Olsen MH, Norager NH, Capion T, Rath MF, Juhler M, MacAulay N. Lysophosphatidic acid as a CSF lipid in posthemorrhagic hydrocephalus that drives CSF accumulation via TRPV4-induced hyperactivation of NKCC1. Fluids Barriers CNS 2022; 19:69. [PMID: 36068581 PMCID: PMC9450297 DOI: 10.1186/s12987-022-00361-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [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: 04/08/2022] [Accepted: 07/20/2022] [Indexed: 11/17/2022] Open
Abstract
Background A range of neurological pathologies may lead to secondary hydrocephalus. Treatment has largely been limited to surgical cerebrospinal fluid (CSF) diversion, as specific and efficient pharmacological options are lacking, partly due to the elusive molecular nature of the CSF secretion apparatus and its regulatory properties in physiology and pathophysiology. Methods CSF obtained from patients with subarachnoid hemorrhage (SAH) and rats with experimentally inflicted intraventricular hemorrhage (IVH) was analyzed for lysophosphatidic acid (LPA) by alpha-LISA. We employed the in vivo rat model to determine the effect of LPA on ventricular size and brain water content, and to reveal the effect of activation and inhibition of the transient receptor potential vanilloid 4 (TRPV4) ion channel on intracranial pressure and CSF secretion rate. LPA-mediated modulation of TRPV4 was determined with electrophysiology and an ex vivo radio-isotope assay was employed to determine the effect of these modulators on choroid plexus transport. Results Elevated levels of LPA were observed in CSF obtained from patients with subarachnoid hemorrhage (SAH) and from rats with experimentally-inflicted intraventricular hemorrhage (IVH). Intraventricular administration of LPA caused elevated brain water content and ventriculomegaly in experimental rats, via its action as an agonist of the choroidal transient receptor potential vanilloid 4 (TRPV4) channel. TRPV4 was revealed as a novel regulator of ICP in experimental rats via its ability to modulate the CSF secretion rate through its direct activation of the Na+/K+/2Cl− cotransporter (NKCC1) implicated in CSF secretion. Conclusions Together, our data reveal that a serum lipid present in brain pathologies with hemorrhagic events promotes CSF hypersecretion and ensuing brain water accumulation via its direct action on TRPV4 and its downstream regulation of NKCC1. TRPV4 may therefore be a promising future pharmacological target for pathologies involving brain water accumulation. Supplementary Information The online version contains supplementary material available at 10.1186/s12987-022-00361-9.
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Affiliation(s)
- Trine L Toft-Bertelsen
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark
| | - Dagne Barbuskaite
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark
| | - Eva Kjer Heerfordt
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark
| | - Sara Diana Lolansen
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark
| | - Søren Norge Andreassen
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark
| | - Nina Rostgaard
- Department of Neurosurgery, Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Markus Harboe Olsen
- Department of Neuroanaesthesiology, Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Nicolas H Norager
- Department of Neurosurgery, Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Tenna Capion
- Department of Neurosurgery, Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Martin Fredensborg Rath
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark
| | - Marianne Juhler
- Department of Neurosurgery, Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Nanna MacAulay
- Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200, Copenhagen, Denmark.
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Sakakibara S, Sakane A, Sasaki T, Shinohara M, Maruo T, Miyata M, Mizutani K, Takai Y. Identification of lysophosphatidic acid in serum as a factor that promotes epithelial apical junctional complex organization. J Biol Chem 2022; 298:102426. [PMID: 36030821 PMCID: PMC9520027 DOI: 10.1016/j.jbc.2022.102426] [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: 04/26/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 11/26/2022] Open
Abstract
The apical junctional complex (AJC) consists of adherens junctions (AJs) and tight junctions and regulates epithelial integrity and remodeling. However, it is unclear how AJC organization is regulated based on environmental cues. We found here using cultured EpH4 mouse mammary epithelial cells that fetal bovine serum (FBS) in a culture medium showed an activity to promote AJC organization and that FBS showed an activity to promote tight junction formation even in the absence of AJ proteins, such as E-cadherin, αE-catenin, and afadin. Furthermore, we purified the individual factor responsible for these functions from FBS and identified this molecule as lysophosphatidic acid (LPA). In validation experiments, purified LPA elicited the same activity as FBS. In addition, we found that the AJC organization–promoting activity of LPA was mediated through the LPA receptor 1/5 via diacylglycerol–novel PKC and Rho–ROCK pathway activation in a mutually independent, but complementary, manner. We demonstrated that the Rho–ROCK pathway activation–mediated AJC organization was independent of myosin II-induced actomyosin contraction, although this signaling pathway was previously shown to induce myosin II activation. These findings are in contrast to the literature, as previous results suggested an AJC organization–disrupting activity of LPA. The present results indicate that LPA in serum has an AJC organization–promoting activity in a manner dependent on or independent of AJ proteins.
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Affiliation(s)
- Shotaro Sakakibara
- Department of Biochemistry, Tokushima University Graduate School of Medicine, Tokushima 770-8503, Japan; Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan
| | - Ayuko Sakane
- Department of Biochemistry, Tokushima University Graduate School of Medicine, Tokushima 770-8503, Japan; Department of Interdisciplinary Researches for Medicine and Photonics, Institute of Post-LED Photonics, Tokushima University, Tokushima 770-8503, Japan.
| | - Takuya Sasaki
- Department of Biochemistry, Tokushima University Graduate School of Medicine, Tokushima 770-8503, Japan
| | - Masakazu Shinohara
- Division of Epidemiology, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan; The Integrated Center for Mass Spectrometry, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Tomohiko Maruo
- Department of Biochemistry, Tokushima University Graduate School of Medicine, Tokushima 770-8503, Japan; Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan
| | - Muneaki Miyata
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan
| | - Kiyohito Mizutani
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan.
| | - Yoshimi Takai
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan.
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Liu X, Pei M, Yu Y, Wang X, Gui J. Reduction of LPAR1 Expression in Neuroblastoma Promotes Tumor Cell Migration. Cancers (Basel) 2022; 14:3346. [PMID: 35884407 DOI: 10.3390/cancers14143346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/04/2022] [Accepted: 07/07/2022] [Indexed: 11/17/2022] Open
Abstract
Neuroblastoma is the most common extracranial solid tumor in children. Tumor metastasis in high-risk NB patients is an essential problem that impairs the survival of patients. In this study, we aimed to use a comprehensive bioinformatics analysis to identify differentially expressed genes between NB and control cells, and to explore novel prognostic markers or treatment targets in tumors. In this way, FN1, PIK3R5, LPAR6 and LPAR1 were screened out via KEGG, GO and PPI network analysis, and we verified the expression and function of LPAR1 experimentally. Our research verified the decreased expression of LPAR1 in NB cells, and the tumor migration inhibitory effects of LPA on NB cells via LPAR1. Moreover, knockdown of LPAR1 promoted NB cell migration and abolished the migration-inhibitory effects mediated by LPA-LPAR1. The tumor-suppressing effects of the LPA-LPAR1 axis suggest that LPAR1 might be a potential target for future treatment of NB.
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Li D, Hu Y, Liu S, Lu C, Li J, Zhou J, Zhang Y, Lu S. A Latent Profile Analysis of Chinese Physicians' Workload Tethered to Paperwork During Outpatient Encounters. Front Public Health 2022; 10:854772. [PMID: 35548081 PMCID: PMC9082025 DOI: 10.3389/fpubh.2022.854772] [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: 01/14/2022] [Accepted: 03/18/2022] [Indexed: 11/13/2022] Open
Abstract
Background Physician dissatisfaction with more time spent on related paperwork but less time available for direct interaction with patients is increasing internationally. Increased physician workload resulting from paperwork might negatively affect their interaction with patients and increase the risk for burnout. This study aimed to investigate the level of physician workload tethered to paperwork during outpatient encounters and explore its latent workload subgroups among Chinese physicians. Methods A cross-sectional survey was conducted via online questionnaire primarily in 24 hospitals in 6 provinces in Eastern, Central, and Western China from November 2020 to February 2021. The Chinese physician mental workload scale developed by our research team was used for assessment of physician workload tethered to paperwork. Physicians were categorized into different subgroups of workload via latent profile analysis. Multinomial logistic regression was subsequently performed to examine how demographic variables differ among physicians belonging to different subgroups. Results A total of 1,934 valid questionnaires were received. Chinese physicians reported medium levels of workload while performing non-physician-patient communication work tasks characterized by paperwork during outpatient encounters. Four latent workload subgroups were identified: "low workload group" (8.8%), "medium workload group" (34.0%), "high workload group" (42.1%) and "very high workload group" (15.1%). Compared with the other latent workload subgroups, physicians belonging to the "very high workload group" were more likely to be younger, married, those who had worse health status, lower educational levels and lower average monthly incomes, those who worked more years in the current institution, more hours per week and longer outpatient hours per week, and those who worked in public general hospitals, tertiary B hospitals and Obstetrics and Gynecology, and saw more than 50 outpatients per day, with more time spent on per patient. Conclusions There exit four latent workload subgroups among Chinese physicians tethered to paperwork during outpatient encounters along with great individual variations among these subgroups. The characteristics of the latent "very high workload group" can help permit more targeted guidance for developing interventions with optimized human resource allocation to, in turn, increase the time available for direct interaction with patients, thereby resulting in improved quality of physician-patient interactions and decreased risk for physician burnout.
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Affiliation(s)
- Dehe Li
- School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yinhuan Hu
- School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sha Liu
- School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chuntao Lu
- Jingmen No. 2 People's Hospital, Jingmen, China
| | - Jiayi Li
- School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jinghan Zhou
- School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yeyan Zhang
- School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shaoyu Lu
- School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Su P, Xiao L, Ye L, Wang Z, Xiong W, Wang Q, Ma X, Xian M, Yang M, Zu Y, Pingali SR, Qian J, Yi Q. A novel role of lysophosphatidic acid ( LPA) in human myeloma resistance to proteasome inhibitors. J Hematol Oncol 2022; 15:55. [PMID: 35526043 PMCID: PMC9077919 DOI: 10.1186/s13045-022-01269-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 04/06/2022] [Accepted: 04/09/2022] [Indexed: 11/10/2022] Open
Abstract
Lysophosphatidic acid (LPA) is a naturally occurring phospholipid that regulates cell proliferation, survival, and migration. However, its role on human multiple myeloma (MM) cells is largely unknown. In this study, we show that LPA, which is highly elevated in MM patients, plays an important role in protecting human MM cells against proteasome inhibitor (PI)-induced apoptosis. LPA bound to its receptor LPAR2 activated its downstream MEK1/2-ERK1/2 signaling pathway and enhanced oxidative phosphorylation (OXPHOS) in mitochondria in MM cells. Increased OXPHOS activity produced more NAD+ and ATP, reduced proteasome activity, and enhanced protein folding and refolding in endoplasmic reticulum (ER), leading to induction of MM resistance to PIs. Importantly, inhibiting LPAR2 activity or knocking out LPAR2 in MM cells significantly enhanced MM sensitivity to PI-induced apoptosis in vitro and in vivo. Interestingly, primary MM cells from LPA-high patients were more resistant to PI-induced apoptosis than MM cells from LPA-low patients. Thus, our study indicates that LPA-LPAR2-mediated signaling pathways play an important role in MM sensitivity to PIs and targeting LPA or LPAR2 may potentially be used to (re)sensitize patients to PI-based therapy.
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Affiliation(s)
- Pan Su
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Liuling Xiao
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Lingqun Ye
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Zhuo Wang
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Wei Xiong
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Qiang Wang
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Xingzhe Ma
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Miao Xian
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Maojie Yang
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Youli Zu
- Department of Pathology and Genomic Medicine, Institute for Academic Medicine, Houston Methodist Research Institute, Houston, TX, USA
| | - Sai Ravi Pingali
- Houston Methodist Cancer Center, Houston Methodist Hospital, Houston, TX, USA
| | - Jianfei Qian
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA
| | - Qing Yi
- Center for Translational Research in Hematological Malignancies, Houston Methodist Cancer Center/Houston Methodist Research Institute, Houston, TX, USA.
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Wang Y, Zhang J, Huang L, Mo Y, Wang C, Li Y, Zhang Y, Zhang Z. The LPA-CDK5-tau pathway mediates neuronal injury in an in vitro model of ischemia-reperfusion insult. BMC Neurol 2022; 22:166. [PMID: 35501719 PMCID: PMC9059403 DOI: 10.1186/s12883-022-02694-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 07/04/2021] [Accepted: 04/29/2022] [Indexed: 11/23/2022] Open
Abstract
Lysophosphatidic acid (LPA) is a common glycerol phospholipid and an important extracellular signaling molecule. LPA binds to its receptors and mediates a variety of biological effects, including the pathophysiological process underlying ischemic brain damage and traumatic brain injury. However, the molecular mechanisms mediating the pathological role of LPA are not clear. Here, we found that LPA activates cyclin-dependent kinase 5 (CDK5). CDK5 phosphorylates tau, which leads to neuronal cell death. Inhibition of LPA production or blocking its receptors reduced the abnormal activation of CDK5 and phosphorylation of tau, thus reversing the death of neurons. Our data indicate that the LPA-CDK5-Tau pathway plays an important role in the pathophysiological process after ischemic stroke. Inhibiting the LPA pathway may be a potential therapeutic target for treating ischemic brain injury.
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Affiliation(s)
- Yaya Wang
- Department of Neurology, Renmin hospital of Wuhan University, Wuhan, 430060, China
| | - Jie Zhang
- Department of Neurology, Renmin hospital of Wuhan University, Wuhan, 430060, China
| | - Liqin Huang
- Department of Neurology, Renmin hospital of Wuhan University, Wuhan, 430060, China
| | - Yanhong Mo
- Department of Neurology, Renmin hospital of Wuhan University, Wuhan, 430060, China
| | - Changyu Wang
- Department of Neurology, Renmin hospital of Wuhan University, Wuhan, 430060, China
| | - Yiyi Li
- Department of Neurology, Renmin hospital of Wuhan University, Wuhan, 430060, China
| | - Yangyang Zhang
- Department of Neurology, Renmin hospital of Wuhan University, Wuhan, 430060, China
| | - Zhaohui Zhang
- Department of Neurology, Renmin hospital of Wuhan University, Wuhan, 430060, China.
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Kremer KN, Buser A, Thumkeo D, Narumiya S, Jacobelli J, Pelanda R, Torres RM. LPA suppresses T cell function by altering the cytoskeleton and disrupting immune synapse formation. Proc Natl Acad Sci U S A 2022; 119:e2118816119. [PMID: 35394866 DOI: 10.1073/pnas.2118816119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Cancer and chronic infections often increase levels of the bioactive lipid, lysophosphatidic acid (LPA), that we have demonstrated acts as an inhibitory ligand upon binding LPAR5 on CD8 T cells, suppressing cytotoxic activity and tumor control. This study, using human and mouse primary T lymphocytes, reveals how LPA disrupts antigen-specific CD8 T cell:target cell immune synapse (IS) formation and T cell function via competing for cytoskeletal regulation. Specifically, we find upon antigen-specific T cell:target cell formation, IP3R1 localizes to the IS by a process dependent on mDia1 and actin and microtubule polymerization. LPA not only inhibited IP3R1 from reaching the IS but also altered T cell receptor (TCR)–induced localization of RhoA and mDia1 impairing F-actin accumulation and altering the tubulin code. Consequently, LPA impeded calcium store release and IS-directed cytokine secretion. Thus, targeting LPA signaling in chronic inflammatory conditions may rescue T cell function and promote antiviral and antitumor immunity.
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Liang Z, He P, Han Y, Yun CC. Survival of Stem Cells and Progenitors in the Intestine Is Regulated by LPA5-Dependent Signaling. Cell Mol Gastroenterol Hepatol 2022; 14:129-150. [PMID: 35390517 PMCID: PMC9120264 DOI: 10.1016/j.jcmgh.2022.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/28/2022] [Accepted: 03/29/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Regeneration of the epithelium by stem cells in the intestine is supported by intrinsic and extrinsic factors. Lysophosphatidic acid (LPA), a bioactive lipid mediator, regulates many cellular functions, including cell proliferation, survival, and cytokine secretion. Here, we identify LPA5 receptor as a potent regulator of the survival of stem cells and transit-amplifying cells in the intestine. METHODS We have used genetic mouse models of conditional deletion of Lpar5, Lpar5f/f;Rosa-CreERT (Lpar5KO), and intestinal epithelial cell-specific Lpar5f/f;AhCre (Lpar5IECKO) mice. Mice were treated with tamoxifen or β-naphthoflavone to delete Lpar5 expression. Enteroids derived from these mice were used to determine the effect of Lpar5 loss on the apoptosis and proliferation of crypt epithelial cells. RESULTS Conditional loss of Lpar5 induced ablation of the intestinal mucosa, which increased morbidity of Lpar5KO mice. Epithelial regeneration was compromised with increased apoptosis and decreased proliferation of crypt epithelial cells by Lpar5 loss. Interestingly, intestinal epithelial cell-specific Lpar5 loss did not cause similar phenotypic defects in vivo. Lpar5 loss reduced intestinal stem cell marker gene expression and reduced lineage tracing from Lgr5+ ISCs. Lpar5 loss induced CXCL10 expression which exerts cytotoxic effects on intestinal stem cells and progenitors in the intestinal crypts. By co-culturing Lpar5KO enteroids with wild-type or Lpar5KO splenocytes, we demonstrated that lymphocytes protect the intestinal crypts via a LPA5-dependent suppression of CXCL10. CONCLUSIONS LPA5 is essential for the regeneration of intestinal epithelium. Our findings reveal a new finding that LPA5 regulates survival of stem cells and transit-amplifying cells in the intestine.
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Affiliation(s)
- Zhongxing Liang
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Peijian He
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Yiran Han
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - C. Chris Yun
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia,Gastroenterology Research, Atlanta Veterans Administration Medical Center, Decatur, Georgia,Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia,Correspondence Address correspondence to: Chris Yun, PhD, Division of Digestive Diseases, Emory University School of Medicine, Atlanta, GA 30324. fax: (404) 727-5767.
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Gupta VK, Kumar A. Targeting lysophosphatidic acid receptor with Ki16425 impedes T cell lymphoma progression through apoptosis induction, glycolysis inhibition, and activation of antitumor immune response. Apoptosis 2022. [PMID: 35366141 DOI: 10.1007/s10495-022-01723-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2022] [Indexed: 11/02/2022]
Abstract
Lysophosphatidic acid (LPA) is a small phospholipid that acts as an extracellular lipid mediator. It promotes cancer progression by altering a wide array of cellular processes, including apoptosis, survival, angiogenesis, invasion, and migration through binding with its cognate receptors. Intriguingly, our previous study showed that in vitro treatment of LPA induced survival of T lymphoma cells. Hence, the present investigation was designed to investigate the antitumor potential of Ki16425, an antagonist of LPA receptors, against T cell lymphoma. Our in vitro results showed inhibition of LPA-mediated survival and metabolic activity of T lymphoma cells by Ki16425. Further, in vivo experimental findings indicated the tumor retarding potential of Ki16425 against T cell lymphoma through apoptosis induction, glycolysis inhibition, and immunoactivation. The administration of Ki16425 triggered apoptosis by down-regulating the expression of Bcl2 and up-regulating p53, Bax, cleaved caspase-3, and Cyt c expression. Further, Ki16425 suppressed glycolytic activity with concomitantly decreased expression of GLUT3 and MCT1. Moreover, we also noticed an elevated level of NO and iNOS in tumor cells after Ki16425 administration which might also be responsible for apoptosis induction and suppressed glycolysis. Additionally, we observed an increased population of total leukocytes, lymphocytes, and monocytes along with increased thymocytes count and IL-2 and IFN-γ levels. Besides, we observed amelioration of tumor-induced kidney and liver damages by Ki16425. Taken together, this is the first study that demonstrates that LPA receptors could be potential future therapeutic targets for designing promising therapeutic strategies against T cell lymphoma.
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Zeng L, Moser S, Mirza-Schreiber N, Lamina C, Coassin S, Nelson CP, Annilo T, Franzén O, Kleber ME, Mack S, Andlauer TFM, Jiang B, Stiller B, Li L, Willenborg C, Munz M, Kessler T, Kastrati A, Laugwitz KL, Erdmann J, Moebus S, Nöthen MM, Peters A, Strauch K, Müller-Nurasyid M, Gieger C, Meitinger T, Steinhagen-Thiessen E, März W, Metspalu A, Björkegren JLM, Samani NJ, Kronenberg F, Müller-Myhsok B, Schunkert H. Cis-epistasis at the LPA locus and risk of cardiovascular diseases. Cardiovasc Res 2022; 118:1088-1102. [PMID: 33878186 PMCID: PMC8930071 DOI: 10.1093/cvr/cvab136] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 04/16/2021] [Indexed: 12/28/2022] Open
Abstract
AIMS Coronary artery disease (CAD) has a strong genetic predisposition. However, despite substantial discoveries made by genome-wide association studies (GWAS), a large proportion of heritability awaits identification. Non-additive genetic effects might be responsible for part of the unaccounted genetic variance. Here, we attempted a proof-of-concept study to identify non-additive genetic effects, namely epistatic interactions, associated with CAD. METHODS AND RESULTS We tested for epistatic interactions in 10 CAD case-control studies and UK Biobank with focus on 8068 SNPs at 56 loci with known associations with CAD risk. We identified a SNP pair located in cis at the LPA locus, rs1800769 and rs9458001, to be jointly associated with risk for CAD [odds ratio (OR) = 1.37, P = 1.07 × 10-11], peripheral arterial disease (OR = 1.22, P = 2.32 × 10-4), aortic stenosis (OR = 1.47, P = 6.95 × 10-7), hepatic lipoprotein(a) (Lp(a)) transcript levels (beta = 0.39, P = 1.41 × 10-8), and Lp(a) serum levels (beta = 0.58, P = 8.7 × 10-32), while individual SNPs displayed no association. Further exploration of the LPA locus revealed a strong dependency of these associations on a rare variant, rs140570886, that was previously associated with Lp(a) levels. We confirmed increased CAD risk for heterozygous (relative OR = 1.46, P = 9.97 × 10-32) and individuals homozygous for the minor allele (relative OR = 1.77, P = 0.09) of rs140570886. Using forward model selection, we also show that epistatic interactions between rs140570886, rs9458001, and rs1800769 modulate the effects of the rs140570886 risk allele. CONCLUSIONS These results demonstrate the feasibility of a large-scale knowledge-based epistasis scan and provide rare evidence of an epistatic interaction in a complex human disease. We were directed to a variant (rs140570886) influencing risk through additive genetic as well as epistatic effects. In summary, this study provides deeper insights into the genetic architecture of a locus important for cardiovascular diseases.
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Affiliation(s)
- Lingyao Zeng
- Deutsches Herzzentrum München, Klinik für Herz- und Kreislauferkrankungen, Technische Universität München, 80636 Munich, Germany
| | - Sylvain Moser
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, 80804 Munich, Germany
- International Max Planck Research School for Translational Psychiatry (IMPRS-TP), Munich 80804, Germany
| | - Nazanin Mirza-Schreiber
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, 80804 Munich, Germany
- Institute of Neurogenomics, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Claudia Lamina
- Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Stefan Coassin
- Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Christopher P Nelson
- Department of Cardiovascular Sciences, University of Leicester, BHF Cardiovascular Research Centre, Glenfield Hospital, Groby Rd, Leicester LE3 9QP, UK
- NIHR Leicester Biomedical Research Centre, Glenfield Hospital, Leicester LE3 9QP, UK
| | - Tarmo Annilo
- Estonian Genome Center, Institute of Genomics, University of Tartu, 51010 Tartu, Estonia
| | - Oscar Franzén
- Department of Genetics and Genomic Sciences and Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
- Integrated Cardio Metabolic Centre, Karolinska Institutet, Huddinge, 14186 Stockholm, Sweden
| | - Marcus E Kleber
- Medizinische Klinik V (Nephrologie, Hypertensiologie, Rheumatologie, Endokrinologie, Diabetologie), Medizinische Fakultät Mannheim der Universität Heidelberg, 69120 Heidelberg, Germany
| | - Salome Mack
- Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Till F M Andlauer
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, 80804 Munich, Germany
- Department of Neurology, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675 Munich, Germany
| | - Beibei Jiang
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, 80804 Munich, Germany
| | - Barbara Stiller
- Deutsches Herzzentrum München, Klinik für Herz- und Kreislauferkrankungen, Technische Universität München, 80636 Munich, Germany
| | - Ling Li
- Deutsches Herzzentrum München, Klinik für Herz- und Kreislauferkrankungen, Technische Universität München, 80636 Munich, Germany
| | - Christina Willenborg
- Institute for Cardiogenetics and University Heart Center Luebeck, University of Lübeck, 23562 Lübeck, Germany
| | - Matthias Munz
- Institute for Cardiogenetics and University Heart Center Luebeck, University of Lübeck, 23562 Lübeck, Germany
- Deutsches Zentrum für Herz- und Kreislauf-Forschung (DZHK), Partner Site Hamburg/Lübeck/Kiel, 23562 Lübeck, Germany
- Charité – University Medicine Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute for Dental and Craniofacial Sciences, Department of Periodontology and Synoptic Dentistry, 14197 Berlin, Germany
| | - Thorsten Kessler
- Deutsches Herzzentrum München, Klinik für Herz- und Kreislauferkrankungen, Technische Universität München, 80636 Munich, Germany
- Deutsches Zentrum für Herz- und Kreislauf-Forschung (DZHK), Partner Site Munich Heart Alliance, 80636 Munich, Germany
| | - Adnan Kastrati
- Deutsches Herzzentrum München, Klinik für Herz- und Kreislauferkrankungen, Technische Universität München, 80636 Munich, Germany
- Deutsches Zentrum für Herz- und Kreislauf-Forschung (DZHK), Partner Site Munich Heart Alliance, 80636 Munich, Germany
| | - Karl-Ludwig Laugwitz
- Medizinische Klinik, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - Jeanette Erdmann
- Institute for Cardiogenetics and University Heart Center Luebeck, University of Lübeck, 23562 Lübeck, Germany
- Deutsches Zentrum für Herz- und Kreislauf-Forschung (DZHK), Partner Site Hamburg/Lübeck/Kiel, 23562 Lübeck, Germany
| | - Susanne Moebus
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital Essen, 45147 Essen, Germany
- Centre for Urbane Epidemiology, University Hospital Essen, 45147 Essen, Germany
| | - Markus M Nöthen
- Institute of Human Genetics, University of Bonn School of Medicine & University Hospital Bonn, 53012 Bonn, Germany
| | - Annette Peters
- Institute of Genetic Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
- IBE, Faculty of Medicine, LMU Munich, 81377 Munich, Germany
| | - Konstantin Strauch
- Institute of Genetic Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
- IBE, Faculty of Medicine, LMU Munich, 81377 Munich, Germany
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center, Johannes Gutenberg University, 55101 Mainz, Germany
| | - Martina Müller-Nurasyid
- Institute of Genetic Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
- IBE, Faculty of Medicine, LMU Munich, 81377 Munich, Germany
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center, Johannes Gutenberg University, 55101 Mainz, Germany
- Department of Internal Medicine I (Cardiology), Hospital of the Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Christian Gieger
- Institute of Genetic Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Thomas Meitinger
- Institute of Human Genetics, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | | | - Winfried März
- Medizinische Klinik V (Nephrologie, Hypertensiologie, Rheumatologie, Endokrinologie, Diabetologie), Medizinische Fakultät Mannheim der Universität Heidelberg, 69120 Heidelberg, Germany
- Synlab Akademie, Synlab Holding Deutschland GmbH, Mannheim und Augsburg, 86156 Augsburg, Germany
| | - Andres Metspalu
- Estonian Genome Center, Institute of Genomics, University of Tartu, 51010 Tartu, Estonia
- Institute of Molecular and Cell Biology, University of Tartu, 51010 Tartu, Estonia
| | - Johan L M Björkegren
- Department of Genetics and Genomic Sciences and Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
- Integrated Cardio Metabolic Centre, Karolinska Institutet, Huddinge, 14186 Stockholm, Sweden
| | - Nilesh J Samani
- Department of Cardiovascular Sciences, University of Leicester, BHF Cardiovascular Research Centre, Glenfield Hospital, Groby Rd, Leicester LE3 9QP, UK
- NIHR Leicester Biomedical Research Centre, Glenfield Hospital, Leicester LE3 9QP, UK
| | - Florian Kronenberg
- Institute of Genetic Epidemiology, Department of Genetics and Pharmacology, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Bertram Müller-Myhsok
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, 80804 Munich, Germany
- Munich Cluster of Systems Biology, SyNergy, 81377 Munich, Germany
- Department of Health Data Science, University of Liverpool, Liverpool L69 3BX, UK
| | - Heribert Schunkert
- Deutsches Herzzentrum München, Klinik für Herz- und Kreislauferkrankungen, Technische Universität München, 80636 Munich, Germany
- Deutsches Zentrum für Herz- und Kreislauf-Forschung (DZHK), Partner Site Hamburg/Lübeck/Kiel, 23562 Lübeck, Germany
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Xu F, Deng C, Ren Z, Sun L, Meng Y, Liu W, Wan J, Chen G. Lysophosphatidic acid shifts metabolic and transcriptional landscapes to induce a distinct cellular state in human pluripotent stem cells. Cell Rep 2021; 37:110063. [PMID: 34852227 DOI: 10.1016/j.celrep.2021.110063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 09/06/2021] [Accepted: 11/04/2021] [Indexed: 12/17/2022] Open
Abstract
Pluripotent stem cells (PSCs) can be maintained in a continuum of cellular states with distinct features. Exogenous lipid supplements can relieve the dependence on de novo lipogenesis and shift global metabolism. However, it is largely unexplored how specific lipid components regulate metabolism and subsequently the pluripotency state. In this study, we report that the metabolic landscape of human PSCs (hPSCs) is shifted by signaling lipid lysophosphatidic acid (LPA), which naturally exists. LPA leads to a distinctive transcriptome profile that is not associated with de novo lipogenesis. Although exogenous lipids such as cholesterol, common free fatty acids, and LPA can affect cellular metabolism, they are not necessary for maintaining primed pluripotency. Instead, LPA induces distinct and reversible phenotypes in cell cycle, morphology, and mitochondria. This study reveals a distinct primed state that could be used to alter cell physiology in hPSCs for basic research and stem cell applications.
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Li Y, Zhang L, Xu T, Zhao X, Jiang X, Xiao F, Sun H, Wang L. Aberrant ENPP2 expression promotes tumor progression in multiple myeloma. Leuk Lymphoma 2021; 63:963-974. [PMID: 34847837 DOI: 10.1080/10428194.2021.2010055] [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] [Indexed: 10/19/2022]
Abstract
Ectonucleotide pyrophosphatase/phosphodiesterase 2 (ENPP2) has been recently linked to tumor development. However, its role in modulating multiple myeloma (MM) disease progression remains unclear. Here, we demonstrated that CD138+ cells isolated from MM patients presented with higher expression of ENPP2 compared with CD138- cells. Treatment of MM cells with IL-6 resulted in ENPP2 upregulation. ENPP2 overexpression promoted proliferation, inhibited apoptosis, increased lysophosphatidic acid (LPA) generation, and upregulated osteoclastogenesis mediator expression in MM cells. In contrast, ENPP2 inhibition induced apoptosis, suppressed proliferation and survival, decreased LPA generation and downregulated osteoclastogenesis mediator expression. In an MM xenograft mouse model, ENPP2 knockdown significantly reduced MM tumor burden by inhibiting cell proliferation and inducing apoptosis. Furthermore, ENPP2 knockdown decreased the levels of LPA, osteoclastogenesis mediators in sera of mice with MM. Our findings revealed the tumor-promoting role of ENPP2 in MM, thus providing new molecular evidence for targeting the ENPP2-LPA axis in MM therapy.
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Affiliation(s)
- Yuxiang Li
- Laboratory of Molecular Diagnosis and Regenerative Medicine, the Affiliate Hospital of Qingdao University, Qingdao, P. R. China.,Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, P.R. China
| | - Lin Zhang
- Laboratory of Molecular Diagnosis and Regenerative Medicine, the Affiliate Hospital of Qingdao University, Qingdao, P. R. China
| | - Tianxin Xu
- School of Nursing, Jilin University, Changchun, P. R. China
| | - Xia Zhao
- Laboratory of Molecular Diagnosis and Regenerative Medicine, the Affiliate Hospital of Qingdao University, Qingdao, P. R. China
| | - Xiaona Jiang
- Laboratory of Molecular Diagnosis and Regenerative Medicine, the Affiliate Hospital of Qingdao University, Qingdao, P. R. China
| | - Fengjun Xiao
- Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing, P.R. China
| | - Huiyan Sun
- Central Laboratory, Hebei Yanda Medical Research Institute, Sanhe, P. R. China
| | - Lisheng Wang
- Laboratory of Molecular Diagnosis and Regenerative Medicine, the Affiliate Hospital of Qingdao University, Qingdao, P. R. China.,Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing, P.R. China
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Zhao H, Gezi G, Tian X, Jia P, Morigen M, Fan L. Lysophosphatidic Acid-Induced EGFR Transactivation Promotes Gastric Cancer Cell DNA Replication by Stabilizing Geminin in the S Phase. Front Pharmacol 2021; 12:706240. [PMID: 34658851 PMCID: PMC8511314 DOI: 10.3389/fphar.2021.706240] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/13/2021] [Indexed: 11/15/2022] Open
Abstract
Geminin, an inhibitor of the DNA replication licensing factor, chromatin licensing and DNA replication factor (Cdt) 1, is essential for the maintenance of genomic integrity. As a multifunctional protein, geminin is also involved in tumor progression, but the molecular details are largely unknown. Here, we found that lysophosphatidic acid (LPA)–induced upregulation of geminin was specific to gastric cancer cells. LPA acted via LPA receptor (LPAR) 3 and matrix metalloproteinases (MMPs) signaling to transactivate epidermal growth factor receptor (EGFR) (Y1173) and thereby stabilize geminin expression level during the S phase. LPA also induced the expression of deubiquitinating protein (DUB) 3, which prevented geminin degradation. These results reveal a novel mechanism underlying gastric cancer progression that involves the regulation of geminin stability by LPA-induced EGFR transactivation and provide potential targets for the signaling pathway and tumor cell–specific inhibitors.
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Affiliation(s)
- Haile Zhao
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Gezi Gezi
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Xiaoxia Tian
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Peijun Jia
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Morigen Morigen
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Lifei Fan
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
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Morris S, Ling M, Sheen J, Sciberras E. Variation in latent social profiles of adolescent ADHD and related clinical features. Psychiatry Res 2021; 302:114014. [PMID: 34102374 DOI: 10.1016/j.psychres.2021.114014] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 05/13/2021] [Indexed: 12/15/2022]
Abstract
Social impairment is a hallmark of Attention-deficit/hyperactivity disorder (ADHD), but the extent of variation in adolescent social strengths and weaknesses is unclear. We compared teacher-reported characteristics of social functioning in adolescents with a history of ADHD (N = 340), and without ADHD (N = 182) from the NIMH Collaborative Multisite Multimodal Treatment Study of Children with ADHD (MTA) at 72-month follow-up (13 - 15.9 years-old). Latent profile analysis of teacher-reported cooperation, assertion and self-control on the Social Skills Rating System (SSRS), was used to identify "social profiles". Their associations with clinical features were explored. Significant differences in social functioning were identified between adolescents with a history of ADHD, and without ADHD (ES = 0.54 - 0.77). Four distinct social profiles were identified in adolescents with a history of ADHD: unskilled (N = 24, 7%), low average (N = 144, 42%), average (N = 141, 41%), and skilled (N = 31, 9%). Profiles with worse social functioning (low average, unskilled) displayed more symptoms of inattention, hyperactivity/impulsivity, oppositionality, depression, global impairment, and were less liked, more rejected and ignored by peers than average and skilled. Social profile membership was not associated with sex, anxiety symptoms, or remittance / persistence of ADHD. Social functioning in adolescents with a history of ADHD is variable, and associated with worse symptomology, global functioning, and peer relationships, irrespective of persistence or remittance of ADHD. Group level summaries of social difficulties in ADHD may be inadequate given nearly half of adolescents with a history of ADHD presented with average or skilled social profiles.
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Affiliation(s)
- Sarah Morris
- School of Psychology, Deakin University, Geelong, VIC, Australia
| | - Mathew Ling
- School of Psychology, Deakin University, Geelong, VIC, Australia
| | - Jade Sheen
- School of Psychology, Deakin University, Geelong, VIC, Australia
| | - Emma Sciberras
- School of Psychology, Deakin University, Geelong, VIC, Australia; Murdoch Childrens Research Institute, Parkville, VIC, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC, Australia.
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Gaire BP, Choi JW. Critical Roles of Lysophospholipid Receptors in Activation of Neuroglia and Their Neuroinflammatory Responses. Int J Mol Sci 2021; 22:7864. [PMID: 34360625 DOI: 10.3390/ijms22157864] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/21/2021] [Accepted: 07/21/2021] [Indexed: 12/12/2022] Open
Abstract
Activation of microglia and/or astrocytes often releases proinflammatory molecules as critical pathogenic mediators that can promote neuroinflammation and secondary brain damages in diverse diseases of the central nervous system (CNS). Therefore, controlling the activation of glial cells and their neuroinflammatory responses has been considered as a potential therapeutic strategy for treating neuroinflammatory diseases. Recently, receptor-mediated lysophospholipid signaling, sphingosine 1-phosphate (S1P) receptor- and lysophosphatidic acid (LPA) receptor-mediated signaling in particular, has drawn scientific interest because of its critical roles in pathogenies of diverse neurological diseases such as neuropathic pain, systemic sclerosis, spinal cord injury, multiple sclerosis, cerebral ischemia, traumatic brain injury, hypoxia, hydrocephalus, and neuropsychiatric disorders. Activation of microglia and/or astrocytes is a common pathogenic event shared by most of these CNS disorders, indicating that lysophospholipid receptors could influence glial activation. In fact, many studies have reported that several S1P and LPA receptors can influence glial activation during the pathogenesis of cerebral ischemia and multiple sclerosis. This review aims to provide a comprehensive framework about the roles of S1P and LPA receptors in the activation of microglia and/or astrocytes and their neuroinflammatory responses in CNS diseases.
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Hasse S, Duchez AC, Fortin P, Boilard E, Bourgoin SG. Interplay between LPA2 and LPA3 in LPA-mediated phosphatidylserine cell surface exposure and extracellular vesicles release by erythrocytes. Biochem Pharmacol 2021; 192:114667. [PMID: 34216604 DOI: 10.1016/j.bcp.2021.114667] [Citation(s) in RCA: 3] [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: 04/27/2021] [Revised: 06/10/2021] [Accepted: 06/28/2021] [Indexed: 11/27/2022]
Abstract
Evidence is growing for the role of red blood cells (RBCs) in vascular homeostasis, including thrombogenic events and inflammation. Lysophosphatidic acid (LPA) is known to induce phosphatidylserine (PS) exposure and the release of RBC Extracellular Vesicles (REVs). Using high sensitivity flow cytometry, we examined the effects and the mechanisms by which the LPA species commonly found in human plasma could activate RBCs. We report that LPA 16:0, 18:0 and 18:1, but not LPA 20:4, induced PS exposure and the release of small PS- and large PS+ REVs through LPA3 receptor signalling in RBCs. The release of large PS+ REVs required higher concentrations of LPA. RBCs were not activated by LPA 20:4. Interestingly, blockade of LPA2 enhanced LPA-mediated PS- REV release in RBCs. Furthermore, LPA receptor agonists and antagonists highlighted that LPA 20:4 inhibited LPA3-dependent PS exposure and, through the LPA2 receptor, inhibited PS- REV production. Activation of RBCs with LPA 18:1 in normal plasma stimulated the release of PS- and PS+ REVs. REVs released in response to LPA were similar to those found in the plasma of systemic lupus erythematosus patients. Our results suggest that LPA species exhibit different biological activities in RBCs through targeting LPA2 and/or LPA3 receptors.
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Affiliation(s)
- Stephan Hasse
- Centre de recherche du CHU de Québec-Université Laval, Centre ARThrite de l'Université Laval, Département de microbiologie-infectiologie et d'immunologie, Université Laval, Québec, QC G1V 4G2, Canada.
| | - Anne-Claire Duchez
- Centre de recherche du CHU de Québec-Université Laval, Centre ARThrite de l'Université Laval, Département de médecine, Faculté de médecine, Université Laval, QC G1V 4G2, Canada
| | - Paul Fortin
- Centre de recherche du CHU de Québec-Université Laval, Centre ARThrite de l'Université Laval, Département de médecine, Faculté de médecine, Université Laval, QC G1V 4G2, Canada.
| | - Eric Boilard
- Centre de recherche du CHU de Québec-Université Laval, Centre ARThrite de l'Université Laval, Département de microbiologie-infectiologie et d'immunologie, Université Laval, Québec, QC G1V 4G2, Canada.
| | - Sylvain G Bourgoin
- Centre de recherche du CHU de Québec-Université Laval, Centre ARThrite de l'Université Laval, Département de microbiologie-infectiologie et d'immunologie, Université Laval, Québec, QC G1V 4G2, Canada.
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Abstract
Lymphatic vessels are necessary for maintaining tissue fluid balance, trafficking of immune cells, and transport of dietary lipids. Growing evidence suggest that lymphatic functions are limited under hypercholesterolemic conditions, which is closely related to atherosclerotic development involving the coronary and other large arteries. Indeed, ablation of lymphatic systems by Chy-mutation as well as depletion of lymphangiogenic factors, including vascular endothelial growth factor-C and -D, in mice perturbs lipoprotein composition to augment hypercholesterolemia. Several investigations have reported that periarterial microlymphatics were attracted by atheroma-derived lymphangiogenic factors, which facilitated lymphatic invasion into the intima of atherosclerotic lesions, thereby modifying immune cell trafficking. In contrast to the lipomodulatory and immunomodulatory roles of the lymphatic systems, the critical drivers of lymphangiogenesis and the details of lymphatic insults under hypercholesterolemic conditions have not been fully elucidated. Interestingly, cholesterol-lowering trials enable hypercholesterolemic prevention of lymphatic drainage in mice; however, a causal relationship between hypercholesterolemia and lymphatic defects remains elusive. In this review, the contribution of aberrant lymphangiogenesis and lymphatic cholesterol transport to hypercholesterolemic atherosclerosis was highlighted. The causal relationship between hypercholesterolemia and lymphatic insults as well as the current achievements in the field were discussed.
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Affiliation(s)
- Takuro Miyazaki
- Department of Biochemistry, Showa University School of Medicine, Tokyo, Japan
| | - Akira Miyazaki
- Department of Biochemistry, Showa University School of Medicine, Tokyo, Japan
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Lua I, Balog S, Yanagi A, Tateno C, Asahina K. Loss of lysophosphatidic acid receptor 1 in hepatocytes reduces steatosis via down-regulation of CD36. Prostaglandins Other Lipid Mediat 2021; 156:106577. [PMID: 34147666 DOI: 10.1016/j.prostaglandins.2021.106577] [Citation(s) in RCA: 3] [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: 11/27/2020] [Revised: 05/19/2021] [Accepted: 06/15/2021] [Indexed: 12/13/2022]
Abstract
Nonalcoholic steatohepatitis is a major public health concern and is characterized by the accumulation of triglyceride in hepatocytes and inflammation in the liver. Steatosis is caused by dysregulation of the influx and efflux of lipids, lipogenesis, and mitochondrial β-oxidation. Extracellular lysophosphatidic acid (LPA) regulates a broad range of cellular processes in development, tissue injury, and cancer. In the present study, we examined the roles of LPA in steatohepatitis induced by a methionine-choline-deficient (MCD) diet in mice. Hepatocytes express LPA receptor (Lpar) 1-3 mRNAs. Steatosis developed in mice fed the MCD diet was reduced by treatment with inhibitors for pan-LPAR or LPAR1. Hepatocyte-specific deletion of the Lpar1 gene also reduced the steatosis in the MCD model. Deletion of the Lpar1 gene in hepatocytes reduced expression of Cd36, a gene encoding a fatty acid transporter. Although LPA/LPAR1 signaling induces expression of Srebp1 mRNA in hepatocytes, LPA does not fully induce expression of SREBP1-target genes involved in lipogenesis. Human hepatocytes repopulated in chimeric mice are known to develop steatosis and treatment with an LPAR1 inhibitor reduces expression of CD36 mRNA and steatosis. Our data indicate that antagonism of LPAR1 reduces steatosis in mouse and human hepatocytes by down-regulation of Cd36.
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Affiliation(s)
- Ingrid Lua
- The Southern California Research Center for ALPD and Cirrhosis, Department of Pathology, Keck School of Medicine, University of Southern California, CA, 90033, United States
| | - Steven Balog
- The Southern California Research Center for ALPD and Cirrhosis, Department of Pathology, Keck School of Medicine, University of Southern California, CA, 90033, United States
| | - Ami Yanagi
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, 739-0046, Japan
| | - Chise Tateno
- Department of Research and Development, PhoenixBio Co., Ltd., Higashi-Hiroshima, Hiroshima, 739-0046, Japan
| | - Kinji Asahina
- The Southern California Research Center for ALPD and Cirrhosis, Department of Pathology, Keck School of Medicine, University of Southern California, CA, 90033, United States.
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48
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Tran KC, Zhao J. Lysophosphatidic Acid Regulates Rho Family of GTPases in Lungs. Cell Biochem Biophys 2021. [PMID: 34110567 DOI: 10.1007/s12013-021-00993-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
The bio-active lipid, lysophosphatidic acid (LPA) interacts with various lysophosphatidic acid receptors (LPARs) to affect a variety of cellular functions, including proliferation, differentiation, survival, migration, morphogenesis and others. The Rho family of small GTPases, is well-known downstream signaling pathways activated by LPA. Among the Rho GTPases, RhoA, Rac1, and Cdc42 are best characterized and LPA-induced activation of the GTPases RhoA, Rac1, and Cdc42 influences a wide range of cellular processes and functions such as cell differentiation, contractile movements, cellular migration, or infiltration. In this review, we will briefly discuss the interplay between LPA and each of these three Rho family proteins, summarizing the main interactions between them. Our discussion will focus mainly on their interplay within lung endothelial and epithelial cells, drawing attention to how these interactions may contribute to pro-inflammatory processes.
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Desale SE, Chidambaram H, Chinnathambi S. G-protein coupled receptor, PI3K and Rho signaling pathways regulate the cascades of Tau and amyloid-β in Alzheimer's disease. Mol Biomed 2021; 2:17. [PMID: 35006431 PMCID: PMC8607389 DOI: 10.1186/s43556-021-00036-1] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 03/18/2021] [Indexed: 12/16/2022] Open
Abstract
Alzheimer's disease is a progressive neurodegenerative disease characterized by the presence of amyloid-β plaques in the extracellular environment and aggregates of Tau protein that forms neurofibrillary tangles (NFTs) in neuronal cells. Along with these pathological proteins, the disease shows neuroinflammation, neuronal death, impairment in the immune function of microglia and synaptic loss, which are mediated by several important signaling pathways. The PI3K/Akt-mediated survival-signaling pathway is activated by many receptors such as G-protein coupled receptors (GPCRs), triggering receptor expressed on myeloid cells 2 (TREM2), and lysophosphatidic acid (LPA) receptor. The signaling pathway not only increases the survival of neurons but also regulates inflammation, phagocytosis, cellular protection, Tau phosphorylation and Aβ secretion as well. In this review, we focused on receptors, which activate PI3K/Akt pathway and its potential to treat Alzheimer's disease. Among several membrane receptors, GPCRs are the major drug targets for therapy, and GPCR signaling pathways are altered during Alzheimer's disease. Several GPCRs are involved in the pathogenic progression, phosphorylation of Tau protein by activation of various cellular kinases and are involved in the amyloidogenic pathway of amyloid-β synthesis. Apart from various GPCR signaling pathways, GPCR regulating/ interacting proteins are involved in the pathogenesis of Alzheimer's disease. These include several small GTPases, Ras homolog enriched in brain, GPCR associated sorting proteins, β-arrestins, etc., that play a critical role in disease progression and has been elaborated in this review.
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Affiliation(s)
- Smita Eknath Desale
- Neurobiology Group, Division of Biochemical Sciences, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Hariharakrishnan Chidambaram
- Neurobiology Group, Division of Biochemical Sciences, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Subashchandrabose Chinnathambi
- Neurobiology Group, Division of Biochemical Sciences, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
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Yu B, van Tol HTA, Oei CHY, Stout TAE, Roelen BAJ. Lysophosphatidic Acid Accelerates Bovine In Vitro-Produced Blastocyst Formation through the Hippo/YAP Pathway. Int J Mol Sci 2021; 22:5915. [PMID: 34072880 DOI: 10.3390/ijms22115915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/17/2021] [Accepted: 05/21/2021] [Indexed: 12/25/2022] Open
Abstract
The segregation of trophectoderm (TE) and inner cell mass in early embryos is driven primarily by the transcription factor CDX2. The signals that trigger CDX2 activation are, however, less clear. In mouse embryos, the Hippo-YAP signaling pathway is important for the activation of CDX2 expression; it is less clear whether this relationship is conserved in other mammals. Lysophosphatidic acid (LPA) has been reported to increase YAP levels by inhibiting its degradation. In this study, we cultured bovine embryos in the presence of LPA and examined changes in gene and protein expression. LPA was found to accelerate the onset of blastocyst formation on days 5 and 6, without changing the TE/inner cell mass ratio. We further observed that the expression of TAZ and TEAD4 was up-regulated, and YAP was overexpressed, in LPA-treated day 6 embryos. However, LPA-induced up-regulation of CDX2 expression was only evident in day 8 embryos. Overall, our data suggest that the Hippo signaling pathway is involved in the initiation of bovine blastocyst formation, but does not affect the cell lineage constitution of blastocysts.
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