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Kumar A, Wang J, Esterly A, Radcliffe C, Zhou H, Wyk BV, Allore HG, Tsang S, Barakat L, Mohanty S, Zhao H, Shaw AC, Zapata HJ. Dectin-1 stimulation promotes a distinct inflammatory signature in the setting of HIV-infection and aging. Aging (Albany NY) 2023; 15:7866-7908. [PMID: 37606991 PMCID: PMC10497004 DOI: 10.18632/aging.204927] [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: 12/08/2022] [Accepted: 07/11/2023] [Indexed: 08/23/2023]
Abstract
Dectin-1 is an innate immune receptor that recognizes and binds β-1, 3/1, 6 glucans on fungi. We evaluated Dectin-1 function in myeloid cells in a cohort of HIV-positive and HIV-negative young and older adults. Stimulation of monocytes with β-D-glucans induced a pro-inflammatory phenotype in monocytes of HIV-infected individuals that was characterized by increased levels of IL-12, TNF-α, and IL-6, with some age-associated cytokine increases also noted. Dendritic cells showed a striking HIV-associated increase in IFN-α production. These increases in cytokine production paralleled increases in Dectin-1 surface expression in both monocytes and dendritic cells that were noted with both HIV and aging. Differential gene expression analysis showed that HIV-positive older adults had a distinct gene signature compared to other cohorts characterized by a robust TNF-α and coagulation response (increased at baseline), a persistent IFN-α and IFN-γ response, and an activated dendritic cell signature/M1 macrophage signature upon Dectin-1 stimulation. Dectin-1 stimulation induced a strong upregulation of MTORC1 signaling in all cohorts, although increased in the HIV-Older cohort (stimulation and baseline). Overall, our study demonstrates that the HIV Aging population has a distinct immune signature in response to Dectin-1 stimulation. This signature may contribute to the pro-inflammatory environment that is associated with HIV and aging.
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Affiliation(s)
- Archit Kumar
- Yale School of Medicine, Section of Infectious Diseases, Department of Internal Medicine, New Haven, CT 06520-8022, USA
| | - Jiawei Wang
- Interdepartmental Program in Computational Biology and Bioinformatics, Yale University, New Haven, CT 06520-8022, USA
| | - Allen Esterly
- Yale School of Medicine, Section of Infectious Diseases, Department of Internal Medicine, New Haven, CT 06520-8022, USA
| | - Chris Radcliffe
- Yale School of Medicine, Section of Infectious Diseases, Department of Internal Medicine, New Haven, CT 06520-8022, USA
| | - Haowen Zhou
- Interdepartmental Program in Computational Biology and Bioinformatics, Yale University, New Haven, CT 06520-8022, USA
| | - Brent Vander Wyk
- Yale University Program on Aging, Yale University, New Haven, CT 06520-8022, USA
| | - Heather G. Allore
- Yale University Program on Aging, Yale University, New Haven, CT 06520-8022, USA
| | - Sui Tsang
- Yale University Program on Aging, Yale University, New Haven, CT 06520-8022, USA
| | - Lydia Barakat
- Yale University, Yale AIDS Care Program, New Haven, CT 06520-8022, USA
| | - Subhasis Mohanty
- Yale School of Medicine, Section of Infectious Diseases, Department of Internal Medicine, New Haven, CT 06520-8022, USA
| | - Hongyu Zhao
- Interdepartmental Program in Computational Biology and Bioinformatics, Yale University, New Haven, CT 06520-8022, USA
| | - Albert C. Shaw
- Yale School of Medicine, Section of Infectious Diseases, Department of Internal Medicine, New Haven, CT 06520-8022, USA
| | - Heidi J. Zapata
- Yale School of Medicine, Section of Infectious Diseases, Department of Internal Medicine, New Haven, CT 06520-8022, USA
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Radcliffe C, Parissi C. Understanding and preserving Indigenous agricultural knowledge: a suggested way forward for future research. GKMC 2022. [DOI: 10.1108/gkmc-03-2022-0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Purpose
Indigenous farmers have, for centuries, applied practices which maintained resilient and sustainable landscapes. Thus, understanding and preserving the agricultural knowledge of Indigenous farmers may enhance the knowledge base of sustainable agriculture. The purpose of this paper is to review current research in the fields of Indigenous knowledge and sustainability to present a research approach which enables a cohesive global way forward for future research projects seeking to understand and preserve Indigenous agricultural knowledge.
Design/methodology/approach
This study applied thematic analysis to review 57 research studies in the field of Indigenous knowledge and sustainability. Key themes were identified from four overarching criteria: research methodology, data input, output and outcomes.
Findings
The findings revealed a range of commonalities among the 57 research studies reviewed. This study proposes the research should continue to seek to understand and preserve Indigenous knowledge, however, research needs to go beyond simply documenting Indigenous knowledge. The way forward requires research of Indigenous agricultural knowledge to establish databases, digital repositories (including oral, video, visual) and online repositories with globally shared access, whilst acknowledging and acting in partnership with Indigenous farmers and their communities.
Originality/value
To the best of the authors’ knowledge, this is an original study which has practical implications for enhancing research outcomes with regard to preservation of Indigenous knowledge. The findings of this study may be used to influence research policy formulation and implementation.
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Radcliffe C, Beck E. The effect of cereal fibre intake on postprandial blood glucose response. Journal of Nutrition & Intermediary Metabolism 2014. [DOI: 10.1016/j.jnim.2014.10.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Rudd P, Royle L, Radcliffe C, Hamid UA, Saldova R, Harvey D, Dwek R. Integrated strategy for identifying and screening potential cancer biomarkers. Comp Biochem Physiol A Mol Integr Physiol 2008. [DOI: 10.1016/j.cbpa.2008.04.431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
Supercritical fluid technology is a rapidly expanding analytical technique. Here we give a brief insight into the background of supercritical fluid technology and how supercritical fluid extraction and supercritical fluid chromatography work in analysis. The applications of these two techniques in forensic science are known to be important. The main area of forensic use of supercritical fluid technology is in the sample preparation and separation of drugs of abuse particularly opiates, cannabinoids, cocaine and sedatives. Supercritical fluid technology can be used for both time-of-death-related drug analysis and for obtaining information relating to long term drug abuse. We also give a review of the use of supercritical fluids in two other major forensic areas, fingerprinting and the extraction and separation of explosives from both bombing events and gunshot residues. Overall we show that supercritical fluid technology is fast becoming a major part of forensic investigations and that it is an invaluable analysis technique.
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Affiliation(s)
- C Radcliffe
- School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Oxford Road, Greater, Manchester, UK
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