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Full-Text Articles in Medicine and Health Sciences
Differential Role Of Type 2 Diabetes As A Risk Factor For Tuberculosis In The Elderly Versus Younger Adults, Blanca I. Restrepo, Julia M. Scordo, Genesis P. Aguillón-Durán, Doris Ayala, Ana P. Quirino-Cerrillo, Raúl Loera-Salazar, America Cruz-González, Jose A. Caso, Mateo Joya-Ayala, Esperanza M. García-Oropesa, Alejandra B. Salinas
Differential Role Of Type 2 Diabetes As A Risk Factor For Tuberculosis In The Elderly Versus Younger Adults, Blanca I. Restrepo, Julia M. Scordo, Genesis P. Aguillón-Durán, Doris Ayala, Ana P. Quirino-Cerrillo, Raúl Loera-Salazar, America Cruz-González, Jose A. Caso, Mateo Joya-Ayala, Esperanza M. García-Oropesa, Alejandra B. Salinas
School of Medicine Publications and Presentations
The elderly are understudied despite their high risk of tuberculosis (TB). We sought to identify factors underlying the lack of an association between TB and type 2 diabetes (T2D) in the elderly, but not adults. We conducted a case–control study in elderly (≥65 years old; ELD) vs. younger adults (young/middle-aged adults (18–44/45–64 years old; YA|MAA) stratified by TB and T2D, using a research study population (n = 1160) and TB surveillance data (n = 8783). In the research study population the adjusted odds ratio (AOR) of TB in T2D was highest in young adults (AOR 6.48) but waned with age …
Novel Automation Of An Enzyme-Linked Immunosorbent Spot Assay Testing Method: Comparable Diagnostic Performance Of The T-Spot.Tb Test Using Manual Density Gradient Cell Isolation Versus Automated Positive Selection With The T-Cell Select Kit, Shu-Hua Wang, Murgesean V. S. Rajaram, Andre Trollip, Qian Wu, Doris Ayala, Danyelle Garza, Marielena A. Benavidez, Kelsie Fox, Genesis P. Aguillón-Durán, Blanca I. Restrepo
Novel Automation Of An Enzyme-Linked Immunosorbent Spot Assay Testing Method: Comparable Diagnostic Performance Of The T-Spot.Tb Test Using Manual Density Gradient Cell Isolation Versus Automated Positive Selection With The T-Cell Select Kit, Shu-Hua Wang, Murgesean V. S. Rajaram, Andre Trollip, Qian Wu, Doris Ayala, Danyelle Garza, Marielena A. Benavidez, Kelsie Fox, Genesis P. Aguillón-Durán, Blanca I. Restrepo
School of Medicine Publications and Presentations
The diagnosis of latent tuberculosis (TB) infection (LTBI) is critical to improve TB treatment and control, and the T-SPOT.TB test is a commercial enzyme-linked immunosorbent spot assay used for this purpose. The objective of the study was to increase automation and extend the time between blood collection and processing for the T-SPOT.TB test from 0 to 8 h to 0 to 54 h. The previous maximum time between blood collection and processing for the T-SPOT.TB test is 32 h using T-Cell Xtend. For this, we compared the T-SPOT.TB test using manual peripheral blood mononuclear cell …
Antibody-Mediated Lilrb2-Receptor Antagonism Induces Human Myeloid-Derived Suppressor Cells To Kill Mycobacterium Tuberculosis, Vipul K. Singh, Arshad Khan, Yitian Xu, Sunny Mai, Licheng Zhang, Abhishek Mishra, Blanca I. Restrepo, Ping-Ying Pan, Shu-Hsia Chen
Antibody-Mediated Lilrb2-Receptor Antagonism Induces Human Myeloid-Derived Suppressor Cells To Kill Mycobacterium Tuberculosis, Vipul K. Singh, Arshad Khan, Yitian Xu, Sunny Mai, Licheng Zhang, Abhishek Mishra, Blanca I. Restrepo, Ping-Ying Pan, Shu-Hsia Chen
School of Medicine Publications and Presentations
Tuberculosis is a leading cause of death in mankind due to infectious agents, and Mycobacterium tuberculosis (Mtb) infects and survives in macrophages (MФs). Although MФs are a major niche, myeloid-derived suppressor cells (MDSCs) are an alternative site for pathogen persistence. Both MФs and MDSCs express varying levels of leukocyte immunoglobulin-like receptor B (LILRB), which regulate the myeloid cell suppressive function. Herein, we demonstrate that antagonism of LILRB2 by a monoclonal antibody (mab) induced a switch of human MDSCs towards an M1-macrophage phenotype, increasing the killing of intracellular Mtb. Mab-mediated antagonism of LILRB2 alone and its combination with a pharmacological blockade …
Human Macrophages Exhibit Gm-Csf Dependent Restriction Of Mycobacterium Tuberculosis Infection Via Regulating Their Self-Survival, Differentiation And Metabolism, Abhishek Mishra, Vipul K. Singh, Chinnaswamy Jagannath, Margaret Sunitha Selvaraj, Selvakumar Subbian, Blanca I. Restrepo, Marie-Claire Gauduin, Arshad Khan
Human Macrophages Exhibit Gm-Csf Dependent Restriction Of Mycobacterium Tuberculosis Infection Via Regulating Their Self-Survival, Differentiation And Metabolism, Abhishek Mishra, Vipul K. Singh, Chinnaswamy Jagannath, Margaret Sunitha Selvaraj, Selvakumar Subbian, Blanca I. Restrepo, Marie-Claire Gauduin, Arshad Khan
School of Medicine Publications and Presentations
GM-CSF is an important cytokine that regulates the proliferation of monocytes/macrophages and its various functions during health and disease. Although growing evidences support the notion that GM-CSF could play a major role in immunity against tuberculosis (TB) infection, the mechanism of GM-CSF mediated protective effect against TB remains largely unknown. Here in this study we examined the secreted levels of GM-CSF by human macrophages from different donors along with the GM-CSF dependent cellular processes that are critical for control of M. tuberculosis infection. While macrophage of different donors varied in their ability to produce GM-CSF, a significant correlation was observed …
The Impact Of Aging On The Lung Alveolar Environment, Predetermining Susceptibility To Respiratory Infections, Jordi B. Torrelles, Blanca I. Restrepo, Yidong Bai, Corinna Ross, Larry S. Schlesinger, Joanne Turner
The Impact Of Aging On The Lung Alveolar Environment, Predetermining Susceptibility To Respiratory Infections, Jordi B. Torrelles, Blanca I. Restrepo, Yidong Bai, Corinna Ross, Larry S. Schlesinger, Joanne Turner
School of Medicine Publications and Presentations
Respiratory infections are one of the top causes of death in the elderly population, displaying susceptibility factors with increasing age that are potentially amenable to interventions. We posit that with increasing age there are predictable tissue-specific changes that prevent the immune system from working effectively in the lung. This mini-review highlights recent evidence for altered local tissue environment factors as we age focusing on increased tissue oxidative stress with associated immune cell changes, likely driven by the byproducts of age-associated inflammatory disease. Potential intervention points are presented.