AI Article Synopsis
- Bovine viral diarrhea virus (BVDV) causes acute and chronic infections in cattle and alpacas, affecting their immune responses.
- In a study with BVDV-infected alpacas, significant decreases in certain lymphocyte populations were observed in peripheral blood shortly after infection, alongside changes in gut-associated lymphoid tissue.
- Increased serum interferon levels were noted during infection, indicating an immune response, but alterations in T-lymphocyte subsets could lead to temporary immunosuppression, increasing the risk of subsequent infections.
Article Abstract
Bovine viral diarrhea virus (BVDV) is a pathogen in cattle and alpacas ( Vicugna pacos), causing acute and persistent BVDV infections. We characterized the effect of acute BVDV infection on the immune system of alpacas by determining lymphocyte subpopulations in peripheral blood and gut-associated lymphoid tissues (GALT) as well as serum interferon levels. Alpacas were experimentally infected with BVDV-1b (strain CO-06). Peripheral blood leukocytes were isolated at 0, 3, 6, and 9 d postinfection (dpi), and leukocytes of GALT at 9 dpi, and evaluated using flow cytometry. Serum interferon levels were determined daily. Flow cytometric analyses of peripheral blood leukocytes showed a significant decrease in CD4+, CD8+, and αβ T-lymphocytes at 3 dpi. CD8+ lymphocytes were significantly increased, and activated lymphocytes were significantly decreased in the C3-stomach region in BVDV-infected alpacas. Serum interferon concentrations significantly increased in BVDV-infected alpacas at 3-6 dpi, peaking at 3 dpi. Our study confirms that BVDV can be a primary acute pathogen in alpacas and that it induces an interferon response and alters leukocyte subset populations. The changes in the proportion of T-lymphocytes during the early stages of BVDV infection may result in transient immunosuppression that may contribute to secondary bacterial and viral infections, similar to cattle.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1177/1040638717690015 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Clonal haematopoiesis of indeterminate potential and risk of microvascular complications among individuals with type 2 diabetes: a cohort study.
Diabetes
January 2025
Department of Big Data in Health Science, Zhejiang University School of Public Health and Department of Psychiatry, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Clonal haematopoiesis of indeterminate potential (CHIP) is associated with macrovascular diseases, including coronary artery disease and stroke. However, the effects of CHIP on microvascular complication have not been evaluated in individuals with type 2 diabetes (T2D). This study included 20,712 T2D participants without prevalent diabetic microvascular complication (DMCs) and hematologic malignancy at baseline.
View Article and Find Full Text PDFEgg allergen-specific T-cell and cytokine responses in healthy and egg-allergic children naturally tolerating baked egg.
Pediatr Allergy Immunol
January 2025
Department of Microbiology, Immunology and Transplantation, Allergy and Immunology Research Group, KU Leuven, Leuven, Belgium.
Background: Type 1 regulatory T (Tr1) cells are critical players in maintaining peripheral tolerance, by producing high IL-10 levels in association with inducible T-cell co-stimulator (ICOS) expression. Whether these cells play a role in naturally acquired baked egg tolerance is unknown.
Objectives: Evaluate frequencies of egg-responsive Tr1 and Th2 cells in egg-allergic children that naturally acquired baked egg tolerance (BET) versus non-egg-allergic (NEA) children.
Investigation of the Mesencephalic Astrocyte Derived Neurotrophic Factor-Endoplasmic Reticulum Stress Pathway in Mood Disorders.
Int J Neuropsychopharmacol
January 2025
Centre for Clinical Neurosciences, McMaster University, Hamilton, ON.
Background: Bipolar disorder (BD) has been associated with impaired cellular resilience. Recent studies have shown abnormalities in the unfolded protein response (UPR) in BD. The UPR is the cellular response to endoplasmic reticulum (ER) stress.
View Article and Find Full Text PDFL-theanine promotes angiogenesis in limb ischemic mice by modulating NRP1/VEGFR2 signaling.
Biomol Biomed
January 2025
Department of Cardiology of The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; State Key Laboratory of Transvascular Implantation Devices, Hangzhou, China; Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, China.
Peripheral artery disease (PAD), primarily caused by atherosclerosis, leads to the narrowing or blockage of arteries that supply blood to the limbs. This study explores the pro-angiogenic effects of L-theanine and its underlying mechanisms in a mouse model of hindlimb ischemia (HLI). To evaluate L-theanine's pro-angiogenic effects, human umbilical vein endothelial cells (HUVECs) were subjected to tube formation, migration, sprouting, and proliferation assays.
View Article and Find Full Text PDFBlastic Plasmacytoid Dendritic Cell Neoplasm, a Very Rare Hematological Malignancy With Initial Cutaneous Involvement: A Case Report.
Acta Dermatovenerol Croat
November 2024
Prof. Miloš Nikolić, MD, PhD, University of Belgrade, School of Medicine,, Belgrade, Serbia;
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a very rare and aggressive hematologic malignancy, arising from plasmacytoid dendritic cells (pDCs). BPDCN frequently has, at least initially, exclusively cutaneous presentation. We present a 45-year-old woman with a 3-month history of rapidly evolving violaceous patches, infiltrated plaques, and bruise-like tumefactions, disseminated on her face and upper trunk.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!