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Wu Y, Xu LC, Yeager E, Beita KG, Crutchfield N, Wilson SN, Maffe P, Schmiedt C, Siedlecki CA, Handa H. In vivo assessment of dual-function submicron textured nitric oxide releasing catheters in a 7-day rabbit model. Acta Biomater 2024; 180:372-382. [PMID: 38614415 DOI: 10.1016/j.actbio.2024.04.009] [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: 01/22/2024] [Revised: 04/01/2024] [Accepted: 04/04/2024] [Indexed: 04/15/2024]
Abstract
Catheter-induced thrombosis is a major contributor to infectious and mechanical complications of biomaterials that lead to device failure. Herein, a dualfunction submicron textured nitric oxide (NO)-releasing catheter was developed. The hemocompatibility and antithrombotic activity of vascular catheters were evaluated in both 20 h in vitro blood loop and 7 d in vivo rabbit model. Surface characterization assessments via atomic force microscopy show the durability of the submicron pattern after incorporation of NO donor S-nitroso-N-acetylpenicillamine (SNAP). The SNAP-doped catheters exhibited prolonged and controlled NO release mimicking the levels released by endothelium. Fabricated catheters showed cytocompatibility when evaluated against BJ human fibroblast cell lines. After 20h in vitro evaluation of catheters in a blood loop, textured-NO catheters exhibited a 13-times reduction in surface thrombus formation compared to the control catheters, which had 83% of the total area covered by clots. After the 7 d in vivo rabbit model, analysis on the catheter surface was examined via scanning electron microscopy, where significant reduction of platelet adhesion, fibrin mesh, and thrombi can be observed on the NO-releasing textured surfaces. Moreover, compared to relative controls, a 63% reduction in the degree of thrombus formation within the jugular vein was observed. Decreased levels of fibrotic tissue decomposition on the jugular vein and reduced platelet adhesion and thrombus formation on the texture of the NO-releasing catheter surface are indications of mitigated foreign body response. This study demonstrated a biocompatible and robust dual-functioning textured NO PU catheter in limiting fouling-induced complications for longer-term blood-contacting device applications. STATEMENT OF SIGNIFICANCE: Catheter-induced thrombosis is a major contributor to infectious and mechanical complications of biomaterials that lead to device failure. This study demonstrated a robust, biocompatible, dual-functioning textured nitric oxide (NO) polyurethane catheter in limiting fouling-induced complications for longer-term blood-contacting device applications. The fabricated catheters exhibited prolonged and controlled NO release that mimics endothelium levels. After the 7 d in vivo model, a significant reduction in platelet adhesion, fibrin mesh, and thrombi was observed on the NO-releasing textured catheters, along with decreased levels of fibrotic tissue decomposition on the jugular vein. Results illustrate that NO-textured catheter surface mitigates foreign body response.
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Affiliation(s)
- Yi Wu
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Li-Chong Xu
- Department of Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, United States
| | - Eric Yeager
- Department of Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, United States
| | - Keren Gabriela Beita
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, United States
| | - Natalie Crutchfield
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Sarah N Wilson
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Patrick Maffe
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Chad Schmiedt
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, United States
| | - Christopher A Siedlecki
- Department of Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, United States; Department of Biomedical Engineering, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, United States.
| | - Hitesh Handa
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States; Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, United States.
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Wilson SN, Maffe P, Pant J, Grommersch BM, Handa H. S-Nitroso-N-acetylpenicillamine impregnated latex: A new class of barrier contraception for the prevention of intercourse-associated UTIs. J Biomed Mater Res B Appl Biomater 2024; 112:e35371. [PMID: 38359176 PMCID: PMC10919893 DOI: 10.1002/jbm.b.35371] [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: 08/08/2023] [Revised: 10/31/2023] [Accepted: 01/02/2024] [Indexed: 02/17/2024]
Abstract
Urinary tract infections (UTIs) are some of the most common infections seen in humans, affecting over half of the female population. Though easily and quickly treatable, if gone untreated for too long, UTIs can lead to narrowing of the urethra as well as bladder and kidney infections. Due to the disease potential, it is crucial to mitigate the development of UTIs throughout healthcare. Unfortunately, sexual activity and the use of condoms have been identified as common risk factors for the development of sexually acquired UTIs. Therefore, this study outlines a potential alteration to existing condom technology to decrease the risk of developing sexually acquired UTIs using S-nitroso-N-acetylpenicillamine (SNAP), a nitric oxide (NO) donor. Herein, varying concentrations of SNAP are integrated into commercialized condoms through a facile solvent swelling method. Physical characterization studies showed that 72%-100% of the ultimate tensile strength was maintained with lower SNAP concentrations, validating the modified condom's mechanical integrity. Additionally, the evaluation of room-temperature storage stability via NO release analysis outlined a lack of special storage conditions needed compared to commercial products. Moreover, these samples exhibited >90% relative cell viability and >96% bacterial killing, proving biocompatibility and antimicrobial properties. SNAP-Latex maintains the desired condom durability while demonstrating excellent potential as an effective new contraceptive technology to mitigate the occurrence of sexually acquired UTIs.
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Affiliation(s)
- Sarah N. Wilson
- School of Chemical, Materials and Biological Engineering, College of Engineering, University of Georgia, Athens, GA 30602, US
| | - Patrick Maffe
- School of Chemical, Materials and Biological Engineering, College of Engineering, University of Georgia, Athens, GA 30602, US
| | - Jitendra Pant
- School of Chemical, Materials and Biological Engineering, College of Engineering, University of Georgia, Athens, GA 30602, US
| | - Bryan M. Grommersch
- School of Chemical, Materials and Biological Engineering, College of Engineering, University of Georgia, Athens, GA 30602, US
| | - Hitesh Handa
- School of Chemical, Materials and Biological Engineering, College of Engineering, University of Georgia, Athens, GA 30602, US
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, US
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Mondal A, Maffe P, Wilson SN, Ghalei S, Palacio R, Handa H, Brisbois EJ. Catalytic effect of transition metal-doped medical grade polymer on S-nitrosothiol decomposition and its biological response. Mater Adv 2023; 4:3197-3206. [PMID: 38013687 PMCID: PMC10388399 DOI: 10.1039/d3ma00191a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/04/2023] [Indexed: 11/29/2023]
Abstract
Nitric oxide (NO)-release from polymer metal composites is achieved through the incorporation of NO donors such as S-nitrosothiols (RSNO). Several studies have shown that metal nanoparticles catalytically decompose RSNO to release NO. In polymer composites, the NO surface flux from the surface can be modulated by the application of metal nanoparticles with a varying degree of catalytic activity. In this study, we compare the NO-releasing polymer composite design strategy - demonstrating how different ways of incorporating RSNO and metal nanoparticles can affect NO flux, donor leaching, or biological activity of the films. The first approach included blending both the RSNO and metal nanoparticle in the matrix (non-layered), while the second approach involved dip-coating metal nanoparticle/polymer layer on the RSNO-containing polymer composite (layered). Secondly, we compare both designs with respect to metal nanoparticles, including iron (Fe), copper (Cu), nickel (Ni), zinc (Zn), and silver (Ag). Differential NO surface flux is observed for each metal nanoparticle, with the Cu-containing polymer composites showing the highest flux for layered composites, whereas Fe demonstrated the highest NO flux for non-layered composites in 24 h. Additionally, a comparative study on NO flux modulation via the choice of metal nanoparticles is shown. Furthermore, mouse fibroblast cell viability when exposed to leachates from the polymer metal composites was dependent on (1) the design of the polymer composite where the layered approach performed better than non-layered composites (2) diffusion of metal nanoparticles from the composites plays a key role. Antibacterial activity on methicillin-resistant Staphylococcus aureus was also dependent on individual metal nanoparticles and flux levels in a 24 h in vitro CDC bioreactor study. Therefore, the study establishes the need for a layered polymer metal composite strategy that synergizes NO flux without negatively affecting biocompatibility.
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Affiliation(s)
- Arnab Mondal
- School of Chemical, Materials & Biomedical Engineering, University of Georgia 302 E Campus Road, Suite 2212 GA 30605 Athens 30602 USA
| | - Patrick Maffe
- School of Chemical, Materials & Biomedical Engineering, University of Georgia 302 E Campus Road, Suite 2212 GA 30605 Athens 30602 USA
| | - Sarah N Wilson
- School of Chemical, Materials & Biomedical Engineering, University of Georgia 302 E Campus Road, Suite 2212 GA 30605 Athens 30602 USA
| | - Sama Ghalei
- School of Chemical, Materials & Biomedical Engineering, University of Georgia 302 E Campus Road, Suite 2212 GA 30605 Athens 30602 USA
| | - Ricky Palacio
- School of Chemical, Materials & Biomedical Engineering, University of Georgia 302 E Campus Road, Suite 2212 GA 30605 Athens 30602 USA
| | - Hitesh Handa
- School of Chemical, Materials & Biomedical Engineering, University of Georgia 302 E Campus Road, Suite 2212 GA 30605 Athens 30602 USA
- Department of Pharmaceutical & Biomedical Sciences, University of Georgia Athens 30602 USA
| | - Elizabeth J Brisbois
- School of Chemical, Materials & Biomedical Engineering, University of Georgia 302 E Campus Road, Suite 2212 GA 30605 Athens 30602 USA
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Roberts TR, Garren MRS, Wilson SN, Handa H, Batchinsky AI. Development and In Vitro Whole Blood Hemocompatibility Screening of Endothelium-Mimetic Multifunctional Coatings. ACS Appl Bio Mater 2022; 5:2212-2223. [PMID: 35404571 DOI: 10.1021/acsabm.2c00073] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Multifunctional antithrombotic surface modifications for blood-contacting medical devices have emerged as a solution for foreign surface-mediated coagulation disturbance. Herein, we have developed and evaluated an endothelium-inspired strategy to reduce the thrombogenicity of medical plastics by imparting nitric oxide (NO) elution and heparin immobilization on the material surface. This dual-action approach (NO+Hep) was applied to polyethylene terephthalate (PET) blood incubation vials and compared to isolated modifications. Vials were characterized to evaluate NO surface flux as well as heparin density and activity. Hemocompatibility was assessed in vitro using whole blood from human donors. Compared to unmodified surfaces, blood incubated in the NO+Hep vials exhibited reduced platelet aggregation (15% decrease AUC, p = 0.040) and prolonged plasma clotting times (aPTT = 147% increase, p < 0.0001, prothrombin time = 5% increase, p = 0.0002). Prolongation of thromboelastography reaction time and elevated antifactor Xa levels in blood from NO+Hep versus PET vials suggests some heparin leaching from the vial surface, confirmed by post-blood incubation heparin density assessment. Results suggest NO+Hep surface modification is a promising approach for blood-contacting plastics; however, careful tuning of NO flux and heparin stabilization are essential and require assessment using human blood as performed here.
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Affiliation(s)
- Teryn R Roberts
- Autonomous Reanimation and Evacuation Research Program, The Geneva Foundation, 2509 Kennedy Circle Bldg 125, San Antonio, Texas 78235, United States
| | - Mark R S Garren
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Sarah N Wilson
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Hitesh Handa
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States.,Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Andriy I Batchinsky
- Autonomous Reanimation and Evacuation Research Program, The Geneva Foundation, 2509 Kennedy Circle Bldg 125, San Antonio, Texas 78235, United States
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Porier DL, Wilson SN, Auguste DI, Leber A, Coutermarsh-Ott S, Allen IC, Caswell CC, Budnick JA, Bassaganya-Riera J, Hontecillas R, Weger-Lucarelli J, Weaver SC, Auguste AJ. Enemy of My Enemy: A Novel Insect-Specific Flavivirus Offers a Promising Platform for a Zika Virus Vaccine. Vaccines (Basel) 2021; 9:vaccines9101142. [PMID: 34696250 PMCID: PMC8539214 DOI: 10.3390/vaccines9101142] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 08/25/2021] [Revised: 09/25/2021] [Accepted: 09/30/2021] [Indexed: 11/30/2022] Open
Abstract
Vaccination remains critical for viral disease outbreak prevention and control, but conventional vaccine development typically involves trade-offs between safety and immunogenicity. We used a recently discovered insect-specific flavivirus as a vector in order to develop an exceptionally safe, flavivirus vaccine candidate with single-dose efficacy. To evaluate the safety and efficacy of this platform, we created a chimeric Zika virus (ZIKV) vaccine candidate, designated Aripo/Zika virus (ARPV/ZIKV). ZIKV has caused immense economic and public health impacts throughout the Americas and remains a significant public health threat. ARPV/ZIKV vaccination showed exceptional safety due to ARPV/ZIKV’s inherent vertebrate host-restriction. ARPV/ZIKV showed no evidence of replication or translation in vitro and showed no hematological, histological or pathogenic effects in vivo. A single-dose immunization with ARPV/ZIKV induced rapid and robust neutralizing antibody and cellular responses, which offered complete protection against ZIKV-induced morbidity, mortality and in utero transmission in immune-competent and -compromised murine models. Splenocytes derived from vaccinated mice demonstrated significant CD4+ and CD8+ responses and significant cytokine production post-antigen exposure. Altogether, our results further support that chimeric insect-specific flaviviruses are a promising strategy to restrict flavivirus emergence via vaccine development.
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Affiliation(s)
- Danielle L. Porier
- Department of Entomology, Fralin Life Science Institute, Virginia Tech, Blacksburg, VA 24061, USA; (D.L.P.); (S.N.W.); (D.I.A.)
| | - Sarah N. Wilson
- Department of Entomology, Fralin Life Science Institute, Virginia Tech, Blacksburg, VA 24061, USA; (D.L.P.); (S.N.W.); (D.I.A.)
| | - Dawn I. Auguste
- Department of Entomology, Fralin Life Science Institute, Virginia Tech, Blacksburg, VA 24061, USA; (D.L.P.); (S.N.W.); (D.I.A.)
| | - Andrew Leber
- Nutritional Immunology and Molecular Medicine Laboratory Institute, Blacksburg, VA 24060, USA; (A.L.); (J.B.-R.); (R.H.)
| | - Sheryl Coutermarsh-Ott
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA 24060, USA; (S.C.-O.); (I.C.A.); (C.C.C.); (J.A.B.); (J.W.-L.)
| | - Irving C. Allen
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA 24060, USA; (S.C.-O.); (I.C.A.); (C.C.C.); (J.A.B.); (J.W.-L.)
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Tech, Blacksburg, VA 24061, USA
| | - Clayton C. Caswell
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA 24060, USA; (S.C.-O.); (I.C.A.); (C.C.C.); (J.A.B.); (J.W.-L.)
- Center for One Health Research, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA 24060, USA
| | - James A. Budnick
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA 24060, USA; (S.C.-O.); (I.C.A.); (C.C.C.); (J.A.B.); (J.W.-L.)
- Center for One Health Research, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA 24060, USA
| | - Josep Bassaganya-Riera
- Nutritional Immunology and Molecular Medicine Laboratory Institute, Blacksburg, VA 24060, USA; (A.L.); (J.B.-R.); (R.H.)
| | - Raquel Hontecillas
- Nutritional Immunology and Molecular Medicine Laboratory Institute, Blacksburg, VA 24060, USA; (A.L.); (J.B.-R.); (R.H.)
| | - James Weger-Lucarelli
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA 24060, USA; (S.C.-O.); (I.C.A.); (C.C.C.); (J.A.B.); (J.W.-L.)
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Tech, Blacksburg, VA 24061, USA
| | - Scott C. Weaver
- World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, TX 77555, USA;
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Albert J. Auguste
- Department of Entomology, Fralin Life Science Institute, Virginia Tech, Blacksburg, VA 24061, USA; (D.L.P.); (S.N.W.); (D.I.A.)
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Tech, Blacksburg, VA 24061, USA
- Correspondence:
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López K, Wilson SN, Coutermash-Ott S, Tanelus M, Stone WB, Porier DL, Auguste DI, Muller JA, Allicock OM, Paulson SL, Erasmus JH, Auguste AJ. Novel murine models for studying Cache Valley virus pathogenesis and in utero transmission. Emerg Microbes Infect 2021; 10:1649-1659. [PMID: 34353229 PMCID: PMC8381923 DOI: 10.1080/22221751.2021.1965497] [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] [Indexed: 11/17/2022]
Abstract
Cache Valley virus (CVV) is a prevalent emerging pathogen of significant importance to agricultural and human health in North America. Emergence in livestock can result in substantial agroeconomic losses resulting from the severe embryonic lethality associated with infection during pregnancy. Although CVV pathogenesis has been well described in ruminants, small animal models are still unavailable, which limits our ability to study its pathogenesis and perform preclinical testing of therapeutics. Herein, we explored CVV pathogenesis, tissue tropism, and disease outcomes in a variety of murine models, including immune -competent and -compromised animals. Our results show that development of CVV disease in mice is dependent on innate immune responses, and type I interferon signalling is essential for preventing infection in mice. IFN-αβR-/- mice infected with CVV present with significant disease and lethal infections, with minimal differences in age-dependent pathogenesis, suggesting this model is appropriate for pathogenesis-related, and short- and long-term therapeutic studies. We also developed a novel CVV in utero transmission model that showed high rates of transmission, spontaneous abortions, and congenital malformations during infection. CVV infection presents a wide tissue tropism, with significant amplification in liver, spleen, and placenta tissues. Immune-competent mice are generally resistant to infection, and only show disease in an age dependent manner. Given the high seropositivity rates in regions of North America, and the continuing geographic expansion of competent mosquito vectors, the risk of epidemic and epizootic emergence of CVV is high, and interventions are needed for this important pathogen.
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Affiliation(s)
- Krisangel López
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Sarah N Wilson
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Sheryl Coutermash-Ott
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD College of Veterinary Medicine, Blacksburg, VA, USA
| | - Manette Tanelus
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - William B Stone
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Danielle L Porier
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Dawn I Auguste
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - John A Muller
- Department of Biology, University of Oklahoma, Norman, OK, USA
| | - Orchid M Allicock
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA
| | - Sally L Paulson
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | | | - Albert J Auguste
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.,Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
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Wilson SN, López K, Coutermash-Ott S, Auguste DI, Porier DL, Armstrong PM, Andreadis TG, Eastwood G, Auguste AJ. La Crosse Virus Shows Strain-Specific Differences in Pathogenesis. Pathogens 2021; 10:pathogens10040400. [PMID: 33805389 PMCID: PMC8066585 DOI: 10.3390/pathogens10040400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 01/31/2021] [Revised: 03/19/2021] [Accepted: 03/24/2021] [Indexed: 01/08/2023] Open
Abstract
La Crosse virus (LACV) is the leading cause of pediatric viral encephalitis in North America, and is an important public health pathogen. Historically, studies involving LACV pathogenesis have focused on lineage I strains, but no former work has explored the pathogenesis between or within lineages. Given the absence of LACV disease in endemic regions where a robust entomological risk exists, we hypothesize that some LACV strains are attenuated and demonstrate reduced neuroinvasiveness. Herein, we compared four viral strains representing all three lineages to determine differences in neurovirulence or neuroinvasiveness using three murine models. A representative strain from lineage I was shown to be the most lethal, causing >50% mortality in each of the three mouse studies. However, other strains only presented excessive mortality (>50%) within the suckling mouse neurovirulence model. Neurovirulence was comparable among strains, but viruses differed in their neuroinvasive capacities. Our studies also showed that viruses within lineage III vary in pathogenesis with contemporaneous strains, showing reduced neuroinvasiveness compared to an ancestral strain from the same U.S. state (i.e., Connecticut). These findings demonstrate that LACV strains differ markedly in pathogenesis, and that strain selection is important for assessing vaccine and therapeutic efficacies.
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Affiliation(s)
- Sarah N. Wilson
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (S.N.W.); (K.L.); (D.I.A.); (D.L.P.); (G.E.)
| | - Krisangel López
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (S.N.W.); (K.L.); (D.I.A.); (D.L.P.); (G.E.)
| | - Sheryl Coutermash-Ott
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD College of Veterinary Medicine, Blacksburg, VA 24061, USA;
| | - Dawn I. Auguste
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (S.N.W.); (K.L.); (D.I.A.); (D.L.P.); (G.E.)
| | - Danielle L. Porier
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (S.N.W.); (K.L.); (D.I.A.); (D.L.P.); (G.E.)
| | - Philip M. Armstrong
- Environmental Sciences, Center for Vector Biology and Zoonotic Diseases, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, USA; (P.M.A.); (T.G.A.)
| | - Theodore G. Andreadis
- Environmental Sciences, Center for Vector Biology and Zoonotic Diseases, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, USA; (P.M.A.); (T.G.A.)
| | - Gillian Eastwood
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (S.N.W.); (K.L.); (D.I.A.); (D.L.P.); (G.E.)
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - Albert J. Auguste
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (S.N.W.); (K.L.); (D.I.A.); (D.L.P.); (G.E.)
- Center for Emerging, Zoonotic, and Arthropod-Borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
- Correspondence: ; Tel.: +1-540-231-6158
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Robertson MJ, Schacterle RS, Mackin GA, Wilson SN, Bloomingdale KL, Ritz J, Komaroff AL. Lymphocyte subset differences in patients with chronic fatigue syndrome, multiple sclerosis and major depression. Clin Exp Immunol 2005; 141:326-32. [PMID: 15996197 PMCID: PMC1809442 DOI: 10.1111/j.1365-2249.2005.02833.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Chronic fatigue syndrome (CFS) is a heterogeneous disorder of unknown aetiology characterized by debilitating fatigue, along with other symptoms, for at least 6 months. Many studies demonstrate probable involvement of the central and autonomic nervous system, as well as a state of generalized immune activation and selective immune dysfunction in patients with CFS. The aim of this study was to compare the lymphocyte subsets of patients with chronic fatigue syndrome to those of patients with major depression and multiple sclerosis as well as those of healthy control subjects. No differences were found in total numbers of T cells, B cells or natural killer (NK) cells. However, differences were found in T, B and NK cell subsets. Patients with major depression had significantly fewer resting T (CD3(+)/CD25(-)) cells than the other groups. Patients with major depression also had significantly more CD20(+)/CD5(+) B cells, a subset associated with the production of autoantibodies. Compared to patients with multiple sclerosis, patients with CFS had greater numbers of CD16(+)/CD3(-) NK cells. Further study will be required to determine whether these alterations in lymphocyte subsets are directly involved in the pathophysiology of these disorders, or are secondary effects of the causal agent(s).
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Affiliation(s)
- M J Robertson
- Division of Hematologic Malignancies, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
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Wilson SN. Sharing credit / sharing blame. Fam Life Matters 2002:2. [PMID: 12321919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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Abstract
We begin by defining the concept of a 'CareMap', before briefly examining the context in which CareMaps emerged, as well as both their potential applications and the benefits arising from their implementation in health care services. We identify and discuss the history of, and critical aspects involved in, the development of the Antenatal Ward Care Delivery Map for the Mater Mothers' Hospital, Brisbane. We will address the multiple applications of, and specific benefits arising from, the formulation and implementation of the Antenatal Ward Care Delivery Map. Additionally, the relationship between the Care Delivery Map and other projects aimed at enhancing and maintaining high quality service delivery for patients across the continuum of care, will be explored. We examine the benefits of utilising the Care Delivery Map in professional education for clinical staff, as well as for health care consumers and their families. In conclusion, future projects enabled through the development of the Care Delivery Map are identified, as well as areas requiring further research.
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11
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Wilson SN. Sexuality education: our current status, and an agenda for 2010. Fam Plann Perspect 2000; 32:252-4. [PMID: 11030263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- S N Wilson
- Network for Family Life Education, Rutgers University, Piscataway, NJ, USA
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Wilson SN. Raising the voices of teens to change sexuality education. SIECUS Rep 2000; 28:20-4. [PMID: 12322610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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13
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Abstract
Patients with posttraumatic stress disorder (PTSD) have a past history of extremely stressful experience and often present with somatic complaints. Peripheral blood lymphocytes (PBL) of patients with PTSD associated with a history of childhood sexual abuse were examined for changes in immune phenotype. The ratio of CD45RO-positive to CD45RA-positive lymphocytes (CD45RO/CD45RA), an index of lymphocyte activation, was higher (P = 0.04) in the PTSD subjects than in the normal subjects. No differences were observed for the number of PBL or the representation of major T, B, or NK lymphocyte subsets. These findings suggest the presence of increased lymphocyte activation in the PBL of patients with PTSD.
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Affiliation(s)
- S N Wilson
- Massachusetts General Hospital, Harvard Medical School, Boston, USA
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Egnew RC, Geary C, Wilson SN. Coordinating physical and behavioral healthcare services for Medicaid populations: issues and implications in integrated and carve-out systems. Behav Healthc Tomorrow 1996; 5:67-71. [PMID: 10161579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
A history of government-funded health and behavioral health services has resulted in separate and parallel systems of care for Medicaid beneficiaries. Accountability for coordination of medical and behavioral services has been poorly delineated, with adverse consequences for the medically indigent population. The author defines current opportunities and approaches for service coordination within the Medicaid arena.
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Affiliation(s)
- R C Egnew
- National Association of County Behavioral Health Directors, Salinas, CA 93906, USA
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15
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Egnew RC, Geary C, Wilson SN. Coordination of services for Medicaid populations. Behav Healthc Tomorrow 1995; 4:25-6. [PMID: 10156799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Wilson SN, Surman OS, Colvin R, Ozonoff D, Gelenberg AJ, Jenike MA, Manschreck T, Pato C. Unusual lymphocyte subset distribution in some depressed patients. J Clin Psychiatry 1990; 51:51-2. [PMID: 2137122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Depression has been previously associated with immunologic dysfunction. The lymphocyte subsets of 10 patients with major depression were found to show a mean T4-T8 (helper-suppressor) ratio lower than that of controls, a difference attributable to increased numbers of suppressor cells in the depressed group. One possible cause of increased suppressor cells is prior or current viral infection.
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Affiliation(s)
- S N Wilson
- Department of Psychiatry, Massachusetts General Hospital, Boston
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17
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Wilson SN. Medical education concerns new AOA president. Interview by Gail Finlayson. OH 1984; 28:6-7. [PMID: 10267040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Kornfeld DS, Heller SS, Frank KA, Wilson SN, Malm JR. Psychological and behavioral responses after coronary artery bypass surgery. Circulation 1982; 66:III24-8. [PMID: 6982120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
One hundred consecutive patients who underwent coronary artery bypass surgery at the Columbia-Presbyterian Medical Center from December 1972 through February 1975 were evaluated at surgery and then followed for as long as 4 1/2 years to study their postoperative psychosocial and behavioral course. One patient died during the first 30 days. At 4 1/2 years, 23 patients were reported as deceased, 15 from cardiac causes. The majority of the long-term survivors had substantially less angina and greater exercise capacity; surgery did not increase the number of patients who were employed, but led to substantial improvements in the quality of life, including general pleasure, reduction of anxiety and depression and subjective improvement in job and family roles. Sexual adjustment improved the least; the frequency of sexual relations tended to decrease. Compliance with the medical regimen was relatively good for smoking and exercise, but not for diet or type A behavior, suggesting a need for psychological intervention.
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