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Hmiel L, Zhang S, Obare LM, Santana MADO, Wanjalla CN, Titanji BK, Hileman CO, Bagchi S. Inflammatory and Immune Mechanisms for Atherosclerotic Cardiovascular Disease in HIV. Int J Mol Sci 2024; 25:7266. [PMID: 39000373 PMCID: PMC11242562 DOI: 10.3390/ijms25137266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 06/26/2024] [Accepted: 06/28/2024] [Indexed: 07/16/2024] Open
Abstract
Atherosclerotic vascular disease disproportionately affects persons living with HIV (PLWH) compared to those without. The reasons for the excess risk include dysregulated immune response and inflammation related to HIV infection itself, comorbid conditions, and co-infections. Here, we review an updated understanding of immune and inflammatory pathways underlying atherosclerosis in PLWH, including effects of viral products, soluble mediators and chemokines, innate and adaptive immune cells, and important co-infections. We also present potential therapeutic targets which may reduce cardiovascular risk in PLWH.
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Affiliation(s)
- Laura Hmiel
- Department of Medicine, Division of Infectious Disease, MetroHealth Medical Center and Case Western Reserve University, Cleveland, OH 44109, USA
| | - Suyu Zhang
- Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Laventa M. Obare
- Division of Infectious Diseases, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | | | - Celestine N. Wanjalla
- Division of Infectious Diseases, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Boghuma K. Titanji
- Division of Infectious Diseases, Emory University, Atlanta, GA 30322, USA
| | - Corrilynn O. Hileman
- Department of Medicine, Division of Infectious Disease, MetroHealth Medical Center and Case Western Reserve University, Cleveland, OH 44109, USA
| | - Shashwatee Bagchi
- Division of Infectious Diseases, Washington University in St. Louis, St. Louis, MO 63110, USA
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Hanser S, Choshi J, Mokoena H, Mabhida SE, Mchiza ZJR, Moetlediwa MT, Muvhulawa N, Nkambule BB, Ndwandwe D, Nqebelele U, Kengne AP, Dludla PV. A systematic review assessing the potential use of cystatin c as a biomarker for kidney disease in people living with HIV on antiretroviral therapy. Front Med (Lausanne) 2024; 11:1295217. [PMID: 38566923 PMCID: PMC10985183 DOI: 10.3389/fmed.2024.1295217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 02/26/2024] [Indexed: 04/04/2024] Open
Abstract
The introduction of antiretroviral therapy (ART) has significantly prolonged the lifespan of people living with human immunodeficiency virus (PLWH). However, the sustained use of this drug regimen has also been associated with a cluster of metabolic anomalies, including renal toxicity, which can lead to the development of kidney diseases. In this study, we reviewed studies examining kidney disease in PLWH sourced from electronic databases such as PubMed/MEDLINE, Scopus, and Google Scholar, as well as gray literature. The narrative synthesis of data from these clinical studies demonstrated that the serum levels of cystatin C remained unchanged or were not affected in PLWH on ART, while the creatinine-based glomerular filtration rate (GFR) fluctuated. In fact, some of the included studies showed that the creatinine-based GFR was increased in PLWH taking tenofovir disoproxil fumarate-containing ART, perhaps indicating that the use of both cystatin C- and creatinine-based GFRs is vital to monitor the development of kidney disease in PLWH. Clinical data summarized within this study indicate the potential detrimental effects of tenofovir-based ART regimens in causing renal tubular injury, while highlighting the possible beneficial effects of dolutegravir-based ART on improving the kidney function in PLWH. However, the summarized literature remains limited, while further clinical studies are required to provide insights into the potential use of cystatin C as a biomarker for kidney disease in PLWH.
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Affiliation(s)
- Sidney Hanser
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga, South Africa
| | - Joel Choshi
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga, South Africa
| | - Haskly Mokoena
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga, South Africa
| | - Sihle E. Mabhida
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town, South Africa
| | - Zandile J. R. Mchiza
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town, South Africa
- School of Public Health, University of the Western Cape, Bellville, South Africa
| | | | - Ndivhuwo Muvhulawa
- Department of Biochemistry, North-West University, Mmabatho, South Africa
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Bongani B. Nkambule
- School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Duduzile Ndwandwe
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
| | - Unati Nqebelele
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town, South Africa
- Department of Medicine, University of Cape Town, Cape Town, South Africa
- Department of Internal Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - André P. Kengne
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town, South Africa
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Phiwayinkosi V. Dludla
- Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, South Africa
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Mokoena H, Mabhida SE, Choshi J, Dludla PV, Nkambule BB, Mchiza ZJ, Ndwandwe DE, Kengne AP, Hanser S. Endothelial dysfunction and cardiovascular diseases in people living with HIV on specific highly active antiretroviral therapy regimen: A systematic review of clinical studies. ATHEROSCLEROSIS PLUS 2024; 55:47-54. [PMID: 38379882 PMCID: PMC10876676 DOI: 10.1016/j.athplu.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/19/2024] [Accepted: 01/28/2024] [Indexed: 02/22/2024]
Abstract
Despite the improved efficacy of highly active antiretroviral therapy (HAART) in viral suppression, emerging evidence indicates an increased burden of noncommunicable diseases in people living with HIV (PLWH). Immune activation and persistently elevated levels of inflammation have been associated with endothelial dysfunction in PLWH, likely contributing to the development of cardiovascular diseases (CVDs). Here, electronic search databases including PubMed, Google Scholar, Cochrane Library, and Science Direct were used to retrieve scientific evidence reporting on any association between markers of endothelial function and CVD-related outcomes in PLWH on HAART. Extracted data was subjected to quality assessment using the Downs and Black checklist. Most (60 %) of the results indicated the presence of endothelial dysfunction in PLWH on HAART, and this was mainly through reduced flow mediated dilation and elevated serum makers of adhesion molecules like ICAM-1, VCAM-1, and P-selectin. The summarized evidence indicates an association between persistently elevated markers of endothelial dysfunction and a pro-inflammatory state in PLWH on HAART. Only a few studies reported on improved endothelial function markers in PLWH on HAART, while limited evidence is available to prove that endothelial dysfunction is associated with CVD-risk, which could be attributed to therapeutic effects of HAART. Limited studies with relatively high quality of evidence were included in this systematic review. In conclusion, results from this review lay an important foundation for future research, even a meta-analysis, that will improve the understanding of the contributing factors to the burden of CVDs in PLWH on HAART.
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Affiliation(s)
- Haskly Mokoena
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga, 0727, South Africa
| | - Sihle E. Mabhida
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Tygerberg, 7505, South Africa
| | - Joel Choshi
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga, 0727, South Africa
| | - Phiwayinkosi V. Dludla
- Cochrane South Africa, South African Medical Research Council, Tygerberg, 7505, South Africa
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, 3880, South Africa
| | - Bongani B. Nkambule
- School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa
| | - Zandile J. Mchiza
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Tygerberg, 7505, South Africa
- School of Public Health, University of the Western Cape, Bellville, 7535, South Africa
| | - Duduzile E. Ndwandwe
- Cochrane South Africa, South African Medical Research Council, Tygerberg, 7505, South Africa
| | - André P. Kengne
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Tygerberg, 7505, South Africa
- Department of Medicine, University of Cape Town, Cape Town, 7700, South Africa
| | - Sidney Hanser
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga, 0727, South Africa
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Kamau E, Maisiba R, Dear N, Esber A, Parikh AP, Iroezindu M, Bahemana E, Kibuuka H, Owuoth J, Maswai J, Opot B, Okoth RO, Abdi F, Mwalo M, Juma D, Andagalu B, Akala HM, Shah N, Crowell TA, Cowden J, Polyak CS, Ake JA. Implications of asymptomatic malaria infections on hematologic parameters in adults living with HIV in malaria-endemic regions with varying transmission intensities. Int J Infect Dis 2023; 137:82-89. [PMID: 37788741 DOI: 10.1016/j.ijid.2023.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/22/2023] [Accepted: 09/24/2023] [Indexed: 10/05/2023] Open
Abstract
OBJECTIVES HIV and malaria coinfection impacts disease management and clinical outcomes. This study investigated hematologic abnormalities in malaria-asymptomatic people living with HIV (PLHIV) in regions with differing malaria transmission. METHODS Study participants were enrolled in the African Cohort Study: two sites in Kenya, one in Uganda, and one in Nigeria. Data was collected at enrollment and every 6 months. Logistic regression estimated odds ratios for associations between HIV/malaria status and anemia, thrombocytopenia, and leucopenia. RESULTS Samples from 1587 participants with one or more visits comprising 1471 (92.7%) from PLHIV and 116 (7.3%) without HIV were analyzed. Parasite point prevalence significantly differed across the study sites (P <0.001). PLHIV had higher odds of anemia, with males at lower odds compared to females; the odds of anemia decreased with age, reaching significance in those ≥50 years old. Participants in Kisumu, Kenya had higher odds of anemia compared to other sites. PLHIV had higher odds of leucopenia, but malaria co-infection was not associated with worsened leucopenia. The odds of thrombocytopenia were decreased in HIV/malaria co-infection compared to the uninfected group. CONCLUSION Hematological parameters are important indicators of health and disease. In PLHIV with asymptomatic malaria co-infection enrolled across four geographic sites in three African countries, abnormalities in hematologic parameters differ in different malaria transmission settings and are region-specific.
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Affiliation(s)
- Edwin Kamau
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; Department of Pathology and Area Laboratory Service, Tripler Army Medical Center, Honolulu, USA.
| | - Risper Maisiba
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya
| | - Nicole Dear
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, USA
| | - Allahna Esber
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, USA
| | - Ajay P Parikh
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, USA
| | - Michael Iroezindu
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; HJF Medical Research International, Abuja, Nigeria
| | - Emmanuel Bahemana
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; HJF Medical Research International, Mbeya, Tanzania
| | - Hannah Kibuuka
- Makerere University Walter Reed Project, Kampala, Uganda
| | - John Owuoth
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya; HJF Medical Research International, Kisumu, Kenya
| | - Jonah Maswai
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; U.S. Army Medical Research Directorate - Africa, Kericho, Kenya
| | - Benjamin Opot
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya
| | - Raphael O Okoth
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya
| | - Farid Abdi
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya
| | - Maureen Mwalo
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya
| | - Dennis Juma
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya
| | - Ben Andagalu
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya; Kenya Medical Research Institute, Kisumu, Kenya
| | - Hoseah M Akala
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya
| | - Neha Shah
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA
| | - Trevor A Crowell
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, USA
| | - Jessica Cowden
- Department of Emerging and Infectious Diseases (DEID), United States Army Medical Research Directorate-Africa (USAMRD-A), Kenya Medical Research Institute (KEMRI) / Walter Reed Project, Kisumu, Kenya
| | - Christina S Polyak
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, USA
| | - Julie A Ake
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, USA
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5
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Mfusi SA, Hanley S, Nkambule BB. Platelet and endothelial cell activation in antiretroviral therapy-treated African women living with HIV and obesity. Thromb Res 2023; 226:30-32. [PMID: 37087806 DOI: 10.1016/j.thromres.2023.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/17/2023] [Accepted: 04/11/2023] [Indexed: 04/25/2023]
Affiliation(s)
- Snenhlanhla A Mfusi
- School of Laboratory Medicine and Medical Sciences (SLMMS), College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Sherika Hanley
- Department of Family Medicine, College of Health Sciences and Centre for the AIDS Programme of Research of South Africa, University of KwaZulu-Natal, Durban, South Africa
| | - Bongani B Nkambule
- School of Laboratory Medicine and Medical Sciences (SLMMS), College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
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Akinosoglou K, Kolosaka M, Schinas G, Delastic AL, Antonopoulou S, Perperis A, Marangos M, Mouzaki A, Gogos C. Association of Antiretroviral Therapy with Platelet Function and Systemic Inflammatory Response in People Living with HIV: A Cross-Sectional Study. Microorganisms 2023; 11:microorganisms11040958. [PMID: 37110381 PMCID: PMC10144397 DOI: 10.3390/microorganisms11040958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
People living with HIV (PLWHIV) present an increased risk of adverse cardiovascular events. We aimed to assess whether antiretroviral therapy (ART) pharmacologically enhances platelet reactivity and platelet activation intensity, and explore the potential association with underlying inflammatory status. This was a cross-sectional cohort study carried out among PLWHIV on diverse ART regimens. Platelet reactivity and activation intensity were assessed using the bedside point-of-care VerifyNow assay, in P2Y12 reaction units (PRU), measurements of monocyte-platelet complexes, and P-selectin and GPIIb/IIIa expression increase, following activation with ADP, respectively. Levels of major inflammatory markers and whole blood parameters were also evaluated. In total, 71 PLWHIV, 59 on ART and 22 healthy controls, were included in this study. PRU values were significantly elevated in PLWHIV compared to controls [Mean; 257.85 vs. 196.67, p < 0.0001], but no significant differences were noted between ART-naïve or ART-experienced PLWHIV, or between TAF/TDF and ABC based regimens, similar to systemic inflammatory response. However, within-group analysis showed that PRUs were significantly higher in ABC/PI vs ABC/INSTI or TAF/TDF + PI patients, in line with levels of IL-2. PRU values did not correlate strongly with CD4 counts, viral load, or cytokine values. P-selectin and GPIIb/IIIa expression increased following ADP activation and were significantly more prominent in PLWHIV (p < 0.005). Platelet reactivity and platelet activation intensity were shown to be increased in PLWHIV, but they did not appear to be related to ART initiation, similar to the underlying systemic inflammatory response.
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Affiliation(s)
- Karolina Akinosoglou
- Department of Internal Medicine, University General Hospital of Patras, 26504 Patras, Greece
- Medical School, University of Patras, 26504 Patras, Greece
- Division of Infectious Diseases, Department of Internal Medicine, University of Patras, 26504, Patras, Greece
| | - Martha Kolosaka
- Department of Internal Medicine, University General Hospital of Patras, 26504 Patras, Greece
| | - George Schinas
- Medical School, University of Patras, 26504 Patras, Greece
| | - Anne-Lise Delastic
- Laboratory of Immuno-Hematology, Medical School, University of Patras, 26504 Patras, Greece
| | - Stefania Antonopoulou
- Laboratory of Immuno-Hematology, Medical School, University of Patras, 26504 Patras, Greece
| | - Angelos Perperis
- Department of Cardiology, University General Hospital of Patras, 26504 Patras, Greece
| | - Markos Marangos
- Department of Internal Medicine, University General Hospital of Patras, 26504 Patras, Greece
- Medical School, University of Patras, 26504 Patras, Greece
- Division of Infectious Diseases, Department of Internal Medicine, University of Patras, 26504, Patras, Greece
| | - Athanasia Mouzaki
- Medical School, University of Patras, 26504 Patras, Greece
- Laboratory of Immuno-Hematology, Medical School, University of Patras, 26504 Patras, Greece
| | - Charalambos Gogos
- Department of Internal Medicine, University General Hospital of Patras, 26504 Patras, Greece
- Medical School, University of Patras, 26504 Patras, Greece
- Division of Infectious Diseases, Department of Internal Medicine, University of Patras, 26504, Patras, Greece
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Lu N, Tay HM, Petchakup C, He L, Gong L, Maw KK, Leong SY, Lok WW, Ong HB, Guo R, Li KHH, Hou HW. Label-free microfluidic cell sorting and detection for rapid blood analysis. LAB ON A CHIP 2023; 23:1226-1257. [PMID: 36655549 DOI: 10.1039/d2lc00904h] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Blood tests are considered as standard clinical procedures to screen for markers of diseases and health conditions. However, the complex cellular background (>99.9% RBCs) and biomolecular composition often pose significant technical challenges for accurate blood analysis. An emerging approach for point-of-care blood diagnostics is utilizing "label-free" microfluidic technologies that rely on intrinsic cell properties for blood fractionation and disease detection without any antibody binding. A growing body of clinical evidence has also reported that cellular dysfunction and their biophysical phenotypes are complementary to standard hematoanalyzer analysis (complete blood count) and can provide a more comprehensive health profiling. In this review, we will summarize recent advances in microfluidic label-free separation of different blood cell components including circulating tumor cells, leukocytes, platelets and nanoscale extracellular vesicles. Label-free single cell analysis of intrinsic cell morphology, spectrochemical properties, dielectric parameters and biophysical characteristics as novel blood-based biomarkers will also be presented. Next, we will highlight research efforts that combine label-free microfluidics with machine learning approaches to enhance detection sensitivity and specificity in clinical studies, as well as innovative microfluidic solutions which are capable of fully integrated and label-free blood cell sorting and analysis. Lastly, we will envisage the current challenges and future outlook of label-free microfluidics platforms for high throughput multi-dimensional blood cell analysis to identify non-traditional circulating biomarkers for clinical diagnostics.
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Affiliation(s)
- Nan Lu
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
- HP-NTU Digital Manufacturing Corporate Lab, Nanyang Technological University, 65 Nanyang Drive, Block N3, 637460, Singapore
| | - Hui Min Tay
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
| | - Chayakorn Petchakup
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
| | - Linwei He
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
| | - Lingyan Gong
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
| | - Kay Khine Maw
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
| | - Sheng Yuan Leong
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
| | - Wan Wei Lok
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
| | - Hong Boon Ong
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
| | - Ruya Guo
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing, 100083, China
| | - King Ho Holden Li
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
- HP-NTU Digital Manufacturing Corporate Lab, Nanyang Technological University, 65 Nanyang Drive, Block N3, 637460, Singapore
| | - Han Wei Hou
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Blk N3, Level 2, Room 86 (N3-02c-86), 639798, Singapore.
- HP-NTU Digital Manufacturing Corporate Lab, Nanyang Technological University, 65 Nanyang Drive, Block N3, 637460, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Clinical Sciences Building, 308232, Singapore
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Marcantoni E, Garshick MS, Schwartz T, Ratnapala N, Cambria M, Dann R, O’Brien M, Heguy A, Berger JS. Antiplatelet Effects of Clopidogrel Vs Aspirin in Virologically Controlled HIV: A Randomized Controlled Trial. JACC Basic Transl Sci 2022; 7:1086-1097. [PMID: 36687270 PMCID: PMC9849466 DOI: 10.1016/j.jacbts.2022.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 06/01/2022] [Accepted: 06/01/2022] [Indexed: 11/16/2022]
Abstract
Patients with HIV exhibit platelet activation and increased risk of cardiovascular disease, the prevention of which is not fully known. Fifty-five HIV-positive patients were randomized to clopidogrel, aspirin, or no-treatment for 14 days, and the platelet phenotype and ability to induce endothelial inflammation assessed. Clopidogrel as opposed to aspirin and no-treatment reduced platelet activation (P-selectin and PAC-1 expression). Compared with baseline, platelet-induced proinflammatory transcript expression of cultured endothelial cells were reduced in those assigned to clopidogrel, with no change in the aspirin and no-treatment arms. In HIV, clinical trials of clopidogrel to prevent cardiovascular disease are warranted. (Antiplatelet Therapy in HIV; NCT02559414).
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Affiliation(s)
- Emanuela Marcantoni
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Michael S. Garshick
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, New York, New York, USA,Center for the Prevention of Cardiovascular Disease, Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Tamar Schwartz
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Nicole Ratnapala
- Dartmouth Geisel School of Medicine, Hanover, New Hampshire, USA
| | - Matthew Cambria
- Division of Vascular and Endovascular Surgery, Department of Surgery, New York University School of Medicine, New York, New York, USA
| | - Rebecca Dann
- New York Medical College, Valhalla, New York, USA
| | - Meagan O’Brien
- Regeneron Pharmaceuticals, Inc, Tarrytown, New York, USA
| | - Adriana Heguy
- Genome Technology Center, New York University School of Medicine, New York, New York, USA
| | - Jeffrey S. Berger
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, New York, New York, USA,Center for the Prevention of Cardiovascular Disease, Department of Medicine, New York University School of Medicine, New York, New York, USA,Division of Hematology, Department of Medicine, New York University School of Medicine, New York, New York, USA,Division of Vascular Surgery, Department of Surgery, New York University School of Medicine, New York, New York, USA,Address for correspondence: Dr Jeffrey S. Berger, Center for the Prevention of Cardiovascular Disease, New York University School of Medicine, 435 East 30th Street, 7th Floor, New York, New York 10016, USA. @plateletdoc
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Castell N, Guerrero-Martin SM, Rubin LH, Shirk EN, Brockhurst JK, Lyons CE, Najarro KM, Queen SE, Carlson BW, Adams RJ, Morrell CN, Gama L, Graham DR, Zink C, Mankowski JL, Clements JE, Metcalf Pate KA. Effect of Single Housing on Innate Immune Activation in Immunodeficiency Virus-Infected Pigtail Macaques ( Macaca nemestrina ) as a Model of Psychosocial Stress in Acute HIV Infection. Psychosom Med 2022; 84:966-975. [PMID: 36162063 PMCID: PMC9553260 DOI: 10.1097/psy.0000000000001132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 07/27/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Simian immunodeficiency virus (SIV) infection of macaques recapitulates many aspects of HIV pathogenesis and is similarly affected by both genetic and environmental factors. Psychosocial stress is associated with immune system dysregulation and worse clinical outcomes in people with HIV. This study assessed the impact of single housing, as a model of psychosocial stress, on innate immune responses of pigtailed macaques ( Macaca nemestrina ) during acute SIV infection. METHODS A retrospective analysis of acute SIV infection of 2- to si6-year-old male pigtailed macaques was performed to compare the innate immune responses of socially ( n = 41) and singly ( n = 35) housed animals. Measures included absolute monocyte count and subsets, and in a subset ( n ≤ 18) platelet counts and activation data. RESULTS SIV infection resulted in the expected innate immune parameter changes with a modulating effect from housing condition. Monocyte number increased after infection for both groups, driven by classical monocytes (CD14 + CD16 - ), with a greater increase in socially housed animals (227%, p < .001, by day 14 compared with preinoculation time points). Platelet numbers recovered more quickly in the socially housed animals. Platelet activation (P-selectin) increased by 65% ( p = .004) and major histocompatibility complex class I surface expression by 40% ( p = .009) from preinoculation only in socially housed animals, whereas no change in these measures occurred in singly housed animals. CONCLUSIONS Chronic psychosocial stress produced by single housing may play an immunomodulatory role in the innate immune response to acute retroviral infection. Dysregulated innate immunity could be one of the pathways by which psychosocial stress contributes to immune suppression and increased disease severity in people with HIV.
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Teer E, Dominick L, Mukonowenzou NC, Essop MF. HIV-Related Myocardial Fibrosis: Inflammatory Hypothesis and Crucial Role of Immune Cells Dysregulation. Cells 2022; 11:cells11182825. [PMID: 36139400 PMCID: PMC9496784 DOI: 10.3390/cells11182825] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
Although the underlying mechanisms driving human immunodeficiency virus (HIV)-mediated cardiovascular diseases (CVD) onset and progression remain unclear, the role of chronic immune activation as a significant mediator is increasingly being highlighted. Chronic inflammation is a characteristic feature of CVD and considered a contributor to diastolic dysfunction, heart failure, and sudden cardiac death. This can trigger downstream effects that result in the increased release of pro-coagulant, pro-fibrotic, and pro-inflammatory cytokines. Subsequently, this can lead to an enhanced thrombotic state (by platelet activation), endothelial dysfunction, and myocardial fibrosis. Of note, recent studies have revealed that myocardial fibrosis is emerging as a mediator of HIV-related CVD. Together, such factors can eventually result in systolic and diastolic dysfunction, and an increased risk for CVD. In light of this, the current review article will focus on (a) the contributions of a chronic inflammatory state and persistent immune activation, and (b) the role of immune cells (mainly platelets) and cardiac fibrosis in terms of HIV-related CVD onset/progression. It is our opinion that such a focus may lead to the development of promising therapeutic targets for the treatment and management of CVD in HIV-positive patients.
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Affiliation(s)
- Eman Teer
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Leanne Dominick
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Nyasha C. Mukonowenzou
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch 7600, South Africa
| | - M. Faadiel Essop
- Centre for Cardio-Metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town 8000, South Africa
- Correspondence: ; Tel.: +27-21-938-9388
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11
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Schapkaitz E, Jacobson BF, Libhaber E. Pregnancy Related Venous Thromboembolism-Associated with HIV Infection and Antiretroviral Therapy. Semin Thromb Hemost 2022; 49:355-363. [PMID: 36055274 DOI: 10.1055/s-0042-1754391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Human immunodeficiency virus (HIV) infection in pregnancy is associated with substantial morbidity and mortality. Improved access to effective antiretroviral therapy (ART) has shifted the spectrum of pregnancy-related complications among HIV-infected pregnant women. In addition to placental vascular complications and preterm delivery, increased rates of venous thromboembolism (VTE) have been described. HIV infection is characterized by immune activation, inflammation, and endothelial dysfunction, which contribute to the activation of coagulation and its prothrombotic consequences. Indeed, activated coagulation factors have been reported to be increased and natural anticoagulants reduced in HIV. Several mechanisms for this persistent prothrombotic balance on ART have been identified. These may include: co-infections, immune recovery, and loss of the gastrointestinal mucosal integrity with microbial translocation. In addition to the direct effects of HIV and ART, traditional venous and obstetric risk factors also contribute to the risk of VTE. A research priority has been to understand the mechanisms of VTE in HIV-infected pregnant women receiving suppressive ART and to translate this into HIV-specific thromboprophylaxis recommendations. Management requires a multidisciplinary approach and further studies are indicated to guide the prevention and management of pregnancy-associated VTE in this population. The current review describes the epidemiology, mechanisms, and management of VTE in HIV-infected women in pregnancy and the postpartum period.
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Affiliation(s)
- Elise Schapkaitz
- Department of Molecular Medicine and Hematology, University of Witwatersrand, Johannesburg, South Africa
| | - Barry F Jacobson
- Department of Molecular Medicine and Hematology, University of Witwatersrand, Johannesburg, South Africa
| | - Elena Libhaber
- Department of Research Methodology and Statistics, University of Witwatersrand, Johannesburg, South Africa
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12
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Ogweno G. Challenges in Platelet Functions in HIV/AIDS Management. Infect Dis (Lond) 2022. [DOI: 10.5772/intechopen.105731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The interest in platelet functions in HIV/AIDS is due to the high incidence of microvascular thrombosis in these individuals. A lot of laboratory data have been generated regarding platelet functions in this population. The tests demonstrate platelet hyperactivity but decreased aggregation, though results are inconsistent depending on the study design. Antiretroviral treatments currently in use display complex interactions. Many studies on platelet functions in these patients have been for research purposes, but none have found utility in guiding drug treatment of thrombosis.
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13
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Cardiovascular effects of intrauterine exposure to maternal HIV and antiretroviral therapy in Ethiopian infants followed from fetal life. AIDS 2022; 36:941-951. [PMID: 35142707 DOI: 10.1097/qad.0000000000003188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To assess cardiovascular effects of in-utero HIV and antiretroviral treatment (ART) exposure on offspring of HIV-positive mothers in Ethiopia. DESIGN HIV-positive and HIV-negative pregnancies were identified from a prospective cohort of women recruited at their first antenatal care visit in Ethiopia, using a nested case-control design. METHODS Fetal standard ultrasound and echocardiography were performed at 2237 weeks of pregnancy to assess fetal biometry and cardiac structure. Postnatal cardiovascular evaluation, including echocardiography and vascular assessment, was performed at 6 months of age. Cardiovascular data were correlated to HIV serostatus, antiretroviral drug exposure and HIV-unrelated maternal characteristics. RESULTS Fetuses from 29 HIV-positive and 67 HIV-negative women paired by gestational age at scan were included. Among HIV-positive women, 25 were on ART before conception, and 4 initiated ART during pregnancy. Estimated fetal weight was similar in both groups [mean 1873 g (standard deviation; SD 569) vs. 1839 g (SD 579) P = 0.79, respectively]. Fetal cardiac morphometry was similar with regard to maternal HIV serostatus: cardiothoracic ratio mean 0.26 (SD 0.05) vs. 0.25 (SD 0.06), P = 0.48; and septal wall thickness mean 4.03 mm (SD 0.58) vs. 3.98 mm (SD 0.70), P = 0.94. No significant cardiovascular differences were detected postnatally according to maternal HIV serostatus: septal wall thickness mean 5.46 mm (SD 0.65) vs. 5.49 (SD 0.89); P = 0.896; isovolumic relaxation time 55.08 ms (SD 6.57) vs. 56.56 (SD 6.74); P = 0.359. CONCLUSION In offspring of Ethiopian women, intrauterine exposure to HIV and ART were not associated with cardiovascular changes from fetal life up to infanthood.
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Reno TA, Tarnus L, Tracy R, Landay AL, Sereti I, Apetrei C, Pandrea I. The Youngbloods. Get Together. Hypercoagulation, Complement, and NET Formation in HIV/SIV Pathogenesis. FRONTIERS IN VIROLOGY 2022. [DOI: 10.3389/fviro.2021.795373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Chronic, systemic T-cell immune activation and inflammation (IA/INFL) have been reported to be associated with disease progression in persons with HIV (PWH) since the inception of the AIDS pandemic. IA/INFL persist in PWH on antiretroviral therapy (ART), despite complete viral suppression and increases their susceptibility to serious non-AIDS events (SNAEs). Increased IA/INFL also occur during pathogenic SIV infections of macaques, while natural hosts of SIVs that control chronic IA/INFL do not progress to AIDS, despite having persistent high viral replication and severe acute CD4+ T-cell loss. Moreover, natural hosts of SIVs do not present with SNAEs. Multiple mechanisms drive HIV-associated IA/INFL, including the virus itself, persistent gut dysfunction, coinfections (CMV, HCV, HBV), proinflammatory lipids, ART toxicity, comorbidities, and behavioral factors (diet, smoking, and alcohol). Other mechanisms could also significantly contribute to IA/INFL during HIV/SIV infection, notably, a hypercoagulable state, characterized by elevated coagulation biomarkers, including D-dimer and tissue factor, which can accurately identify patients at risk for thromboembolic events and death. Coagulation biomarkers strongly correlate with INFL and predict the risk of SNAE-induced end-organ damage. Meanwhile, the complement system is also involved in the pathogenesis of HIV comorbidities. Despite prolonged viral suppression, PWH on ART have high plasma levels of C3a. HIV/SIV infections also trigger neutrophil extracellular traps (NETs) formation that contribute to the elimination of viral particles and infected CD4+ T-cells. However, as SIV infection progresses, generation of NETs can become excessive, fueling IA/INFL, destruction of multiple immune cells subsets, and microthrombotic events, contributing to further tissue damages and SNAEs. Tackling residual IA/INFL has the potential to improve the clinical course of HIV infection. Therefore, therapeutics targeting new pathways that can fuel IA/INFL such as hypercoagulation, complement activation and excessive formation of NETs might be beneficial for PWH and should be considered and evaluated.
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15
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Dai XP, Wu FY, Cui C, Liao XJ, Jiao YM, Zhang C, Song JW, Fan X, Zhang JY, He Q, Wang FS. Increased Platelet-CD4+ T Cell Aggregates Are Correlated With HIV-1 Permissiveness and CD4+ T Cell Loss. Front Immunol 2021; 12:799124. [PMID: 34987521 PMCID: PMC8720770 DOI: 10.3389/fimmu.2021.799124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/06/2021] [Indexed: 12/12/2022] Open
Abstract
Chronic HIV-1 infection is associated with persistent inflammation, which contributes to disease progression. Platelet-T cell aggregates play a critical role in maintaining inflammation. However, the phenotypic characteristics and clinical significance of platelet-CD4+ T cell aggregates remain unclear in different HIV-infected populations. In this study, we quantified and characterized platelet-CD4+ T cell aggregates in the peripheral blood of treatment-naïve HIV-1-infected individuals (TNs), immunological responders to antiretroviral therapy (IRs), immunological non-responders to antiretroviral therapy (INRs), and healthy controls (HCs). Flow cytometry analysis and immunofluorescence microscopy showed increased platelet-CD4+ T cell aggregate formation in TNs compared to HCs during HIV-1 infection. However, the frequencies of platelet-CD4+ T cell aggregates decreased in IRs compared to TNs, but not in INRs, which have shown severe immunological dysfunction. Platelet-CD4+ T cell aggregate frequencies were positively correlated with HIV-1 viral load but negatively correlated with CD4+ T cell counts and CD4/CD8 ratios. Furthermore, we observed a higher expression of CD45RO, HIV co-receptors, HIV activation/exhaustion markers in platelet-CD4+ T cell aggregates, which was associated with HIV-1 permissiveness. High levels of caspase-1 and caspase-3, and low levels of Bcl-2 in platelet-CD4+ T cell aggregates imply the potential role in CD4+ T cell loss during HIV-1 infection. Furthermore, platelet-CD4+ T cell aggregates contained more HIV-1 gag viral protein and HIV-1 DNA than their platelet-free CD4+ T cell counterparts. The platelet-CD4+ T cell aggregate levels were positively correlated with plasma sCD163 and sCD14 levels. Our findings demonstrate that platelet-CD4+ T cell aggregate formation has typical characteristics of HIV-1 permissiveness and is related to immune activation during HIV-1 infection.
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Affiliation(s)
- Xiao-Peng Dai
- Medical School of Chinese People’s Liberation Army of China (PLA), Beijing, China
- Noncommissioned Officer School, Army Medical University, Shijiazhuang, China
| | - Feng-Ying Wu
- Medical School of Chinese People’s Liberation Army of China (PLA), Beijing, China
- Department of Infectious Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Cheng Cui
- Noncommissioned Officer School, Army Medical University, Shijiazhuang, China
| | - Xue-Jiao Liao
- The Third People’s Hospital of Shenzhen, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Yan-Mei Jiao
- Department of Infectious Diseases, The Fifth Medical Centre of Chinese People’s Liberation Army of China (PLA) General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Chao Zhang
- Department of Infectious Diseases, The Fifth Medical Centre of Chinese People’s Liberation Army of China (PLA) General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Jin-Wen Song
- Department of Infectious Diseases, The Fifth Medical Centre of Chinese People’s Liberation Army of China (PLA) General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Xing Fan
- Department of Infectious Diseases, The Fifth Medical Centre of Chinese People’s Liberation Army of China (PLA) General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Ji-Yuan Zhang
- Department of Infectious Diseases, The Fifth Medical Centre of Chinese People’s Liberation Army of China (PLA) General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
- *Correspondence: Fu-Sheng Wang, ; Ji-Yuan Zhang, ; Qing He,
| | - Qing He
- The Third People’s Hospital of Shenzhen, School of Medicine, Southern University of Science and Technology, Shenzhen, China
- *Correspondence: Fu-Sheng Wang, ; Ji-Yuan Zhang, ; Qing He,
| | - Fu-Sheng Wang
- Medical School of Chinese People’s Liberation Army of China (PLA), Beijing, China
- Department of Infectious Diseases, The Fifth Medical Centre of Chinese People’s Liberation Army of China (PLA) General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
- *Correspondence: Fu-Sheng Wang, ; Ji-Yuan Zhang, ; Qing He,
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Mwakyandile T, Shayo G, Mugusi S, Sunguya B, Sasi P, Moshiro C, Mugusi F, Lyamuya E. Effect of aspirin on HIV disease progression among HIV-infected individuals initiating antiretroviral therapy: study protocol for a randomised controlled trial. BMJ Open 2021; 11:e049330. [PMID: 34728445 PMCID: PMC8565540 DOI: 10.1136/bmjopen-2021-049330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION An increase in cardiovascular disease (CVD) among people living with HIV infection is linked to platelet and immune activation, a phenomenon unabolished by antiretroviral (ARV) drugs alone. In small studies, aspirin (acetylsalicylic acid [ASA]) has been shown to control immune activation, increase CD4+ count, halt HIV disease progression and reduce HIV viral load (HVL). We present a protocol for a larger ongoing randomised placebo controlled trial on the effect of an addition of ASA to ARV drugs on HIV disease progression. METHODS AND ANALYSIS A single-centre phase IIA double-blind, parallel-group randomised controlled trial intends to recruit 454 consenting ARV drug-naïve, HIV-infected adults initiating ART. Participants are randomised in blocks of 10 in a 1:1 ratio to receive, in addition to ARV drugs, 75 mg ASA or placebo for 6 months. The primary outcome is the proportion of participants attaining HVL of <50 copies/mL by 8, 12 and 24 weeks. Secondary outcomes include proportions of participants with HVL of >1000 copies/mL at week 24, attaining a >30% rise of CD4 count from baseline value at week 12, experiencing adverse events, with normal levels of biomarkers of platelet and immune activation at weeks 12 and 24 and rates of morbidity and all-cause mortality. Intention-to-treat analysis will be done for all study outcomes. ETHICS AND DISSEMINATION Ethical approval has been obtained from institutional and national ethics review committees. Findings will be submitted to peer-reviewed journals and presented in scientific conferences. TRIAL REGISTRATION NUMBER PACTR202003522049711.
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Affiliation(s)
- Tosi Mwakyandile
- Department of Clinical Pharmacology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Grace Shayo
- Department of Internal Medicine, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Sabina Mugusi
- Department of Clinical Pharmacology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Bruno Sunguya
- Department of Community Health, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Dar es Salaam, Tanzania
| | - Philip Sasi
- Department of Clinical Pharmacology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Candida Moshiro
- Department of Epidemiology and Biostatistics, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Ferdinand Mugusi
- Department of Internal Medicine, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Eligius Lyamuya
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
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Riche M, Marijon P, Amelot A, Bielle F, Mokhtari K, Chambrun MPD, Joncour AL, Idbaih A, Touat M, Do CH, Deme M, Pasqualotto R, Jacquens A, Degos V, Shotar E, Chougar L, Carpentier A, Mathon B. Severity, timeline, and management of complications after stereotactic brain biopsy. J Neurosurg 2021; 136:867-876. [PMID: 34507289 DOI: 10.3171/2021.3.jns21134] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 03/12/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The literature shows discrepancies in stereotactic brain biopsy complication rates, severities, and outcomes. Little is known about the timeline of postbiopsy complications. This study aimed to analyze 1) complications following brain biopsies, using a graded severity scale, and 2) a timeline of complication occurrence. The secondary objectives were to determine factors associated with an increased risk of complications and to assess complication-related management and extra costs. METHODS The authors retrospectively examined 1500 consecutive stereotactic brain biopsies performed in adult patients at their tertiary medical center between April 2009 and April 2019. RESULTS Three hundred eighty-one biopsies (25.4%) were followed by a complication, including 88.2% of asymptomatic hemorrhages. Symptomatic complications involved 3.0% of the biopsies, and 0.8% of the biopsies were fatal. The severity grading scale had a 97.6% interobserver reproducibility. Twenty-three (51.1%) of the 45 symptomatic complications occurred within the 1st hour following the biopsy, while 75.6% occurred within the first 6 hours. Age ≥ 65 years, second biopsy procedures, gadolinium-enhanced lesions, glioblastomas, and lymphomas were predictors of biopsy-related complications. Brainstem biopsy-targeted lesions and cerebral toxoplasmosis were predictive of mortality. Asymptomatic hemorrhage was associated with delayed (> 6 hours) symptomatic complications. Symptomatic complications led to extended hospitalization in 86.7% of patients. The average extra cost for management of a patient with postbiopsy symptomatic complication was $35,702. CONCLUSIONS Symptomatic complications from brain biopsies are infrequent but associated with substantial adverse effects and cost implications for the healthcare system. The use of a severity grading scale, as the authors propose in this article, helps to classify complications according to the therapeutic consequences and the patient's outcome. Because this study indicates that most complications occur within the first few hours following the biopsy, postbiopsy monitoring can be tailored accordingly. The authors therefore recommend systematic monitoring for 2 hours in the recovery unit and a CT scan 2 hours after the end of the biopsy procedure. In addition, they propose a modern algorithm for optimal postoperative management of patients undergoing stereotactic biopsy.
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Affiliation(s)
- Maximilien Riche
- Departments of1Neurosurgery.,2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM
| | - Pauline Marijon
- Departments of1Neurosurgery.,2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM
| | | | - Franck Bielle
- 2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM.,3Neuropathology
| | - Karima Mokhtari
- 2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM.,3Neuropathology
| | - Marc Pineton de Chambrun
- 4Internal Medicine 2.,5Intensive Care Medicine.,6INSERM, UMRS_1166-ICAN, Institute of Cardiometabolism and Nutrition
| | | | - Ahmed Idbaih
- 2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM.,8Neurology Mazarin
| | - Mehdi Touat
- 2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM.,8Neurology Mazarin
| | - Chung-Hi Do
- 9Anesthesia, Critical Care, and Perioperative Medicine, and
| | - Mamadou Deme
- 9Anesthesia, Critical Care, and Perioperative Medicine, and
| | | | - Alice Jacquens
- 9Anesthesia, Critical Care, and Perioperative Medicine, and
| | - Vincent Degos
- 9Anesthesia, Critical Care, and Perioperative Medicine, and.,10Clinical Research Group ARPE, Sorbonne University.,11INSERM UMR 1141, PROTECT, Paris, France
| | - Eimad Shotar
- 12Neuroradiology, APHP, Sorbonne University, La Pitié-Salpêtrière Hospital
| | - Lydia Chougar
- 2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM.,12Neuroradiology, APHP, Sorbonne University, La Pitié-Salpêtrière Hospital
| | - Alexandre Carpentier
- Departments of1Neurosurgery.,2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM
| | - Bertrand Mathon
- Departments of1Neurosurgery.,2INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM
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The Role of P-Selectin in COVID-19 Coagulopathy: An Updated Review. Int J Mol Sci 2021; 22:ijms22157942. [PMID: 34360707 PMCID: PMC8348106 DOI: 10.3390/ijms22157942] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 01/14/2023] Open
Abstract
In severe COVID-19, which is characterized by blood clots and neutrophil-platelet aggregates in the circulating blood and different tissues, an increased incidence of cardiovascular complications and venous thrombotic events has been reported. The inflammatory storm that characterizes severe infections may act as a driver capable of profoundly disrupting the complex interplay between platelets, endothelium, and leukocytes, thus contributing to the definition of COVID-19-associated coagulopathy. In this frame, P-selectin represents a key molecule expressed on endothelial cells and on activated platelets, and contributes to endothelial activation, leucocyte recruitment, rolling, and tissue migration. Briefly, we describe the current state of knowledge about P-selectin involvement in COVID-19 pathogenesis, its possible use as a severity marker and as a target for host-directed therapeutic intervention.
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