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Mesquita LP, Diaz MH, Howerth EW, Stallknecht DE, Noblet R, Gray EW, Mead DG. Pathogenesis of Vesicular Stomatitis New Jersey Virus Infection in Deer Mice ( Peromyscus maniculatus) Transmitted by Black Flies ( Simulium vittatum). Vet Pathol 2016; 54:74-81. [PMID: 27312365 DOI: 10.1177/0300985816653172] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 11/16/2022]
Abstract
The natural transmission of vesicular stomatitis New Jersey virus (VSNJV), an arthropod-borne virus, is not completely understood. Rodents may have a role as reservoir or amplifying hosts. In this study, juvenile and nestling deer mice ( Peromyscus maniculatus) were exposed to VSNJV-infected black fly ( Simulium vittatum) bites followed by a second exposure to naive black flies on the nestling mice. Severe neurological signs were observed in some juvenile mice by 6 to 8 days postinoculation (DPI); viremia was not detected in 25 juvenile deer mice following exposure to VSNJV-infected fly bites. Both juvenile and nestling mice had lesions and viral antigen in the central nervous system (CNS); in juveniles, their distribution suggested that the sensory pathway was the most likely route to the CNS. In contrast, a hematogenous route was probably involved in nestling mice, since all of these mice developed viremia and had widespread antigen distribution in the CNS and other tissues on 2 DPI. VSNJV was recovered from naive flies that fed on viremic nestling mice. This is the first report of viremia in a potential natural host following infection with VSNJV via insect bite and conversely of an insect becoming infected with VSNJV by feeding on a viremic host. These results, along with histopathology and immunohistochemistry, show that nestling mice have widespread dissemination of VSNJV following VSNJV-infected black fly bite and are a potential reservoir or amplifying host for VSNJV.
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Affiliation(s)
- L P Mesquita
- 1 Department of Pathology, University of Georgia, Athens, GA, USA.,2 Department of Pathology, University of São Paulo, São Paulo, Brazil
| | - M H Diaz
- 3 Southeastern Cooperative Wildlife Disease Study, College of Veterinary Medicine, University of Georgia, Athens, GA, USA.,4 Centers for Disease Control and Prevention, Division of Bacterial Diseases, Respiratory Diseases Branch, Atlanta, GA, USA
| | - E W Howerth
- 1 Department of Pathology, University of Georgia, Athens, GA, USA
| | - D E Stallknecht
- 3 Southeastern Cooperative Wildlife Disease Study, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - R Noblet
- 5 Department of Entomology, University of Georgia, Athens, GA, USA
| | - E W Gray
- 5 Department of Entomology, University of Georgia, Athens, GA, USA
| | - D G Mead
- 3 Southeastern Cooperative Wildlife Disease Study, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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Currier CB, Montalbert C, Dholakia SV, Diaz MH, Helfrich GB, Sulkin MD. Surgical management of infected Thomas shunts. Surgery 1981; 89:375-7. [PMID: 7466628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Infected Thomas shunts pose a problem for the surgeon treating end-stage renal failure patients. Complete removal of the prosthesis with ligation of the femoral vessels may jeopardize the limb. Removal of the shunt without the Dacron patch usually will not eradicate the infection. The present article describes a two-stage approach in six patients with arterial bypass of the infected area and complete removal of the prosthesis. There were no postoperative complications. Arterial circulation was maintained, and all operative sites healed completely.
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Currier CB, Papadopoulou Z, Helfrich GB, Diaz MH, Sulkin MD. Successful renal transplantation in focal segmental glomerulosclerosis. Transplant Proc 1979; 11:49-54. [PMID: 377682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Smyth NP, Magovern GJ, Ramirez RG, Diaz MH, Dixon CM, Fecht DC, Johnson A. In vivo study of a new radioisotope-powered cardiac pacer. J Thorac Cardiovasc Surg 1975; 70:2-8. [PMID: 1152502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new radioisotopic pulse generator has been developed. It is 6 cm. long, 4.7 cm. high, 1.92 cm. wide, and weighs 61 Gm. (2 oz.). It is the smallest pulse generator made and has a life expectancy of over 20 years. The circuit is a conventional ventricular-inhibited (V.V.I.) type. In vitro testing has passed all Atomic Energy Commission requirements. The present study is concerned with in vivo testing of the complete pacemaker system, by means of both myocardial and endocranial electrodes, in 20 dogs with and without induced heart block. Extensive testing for electromagnetic compatability was carried out on 1 animal with induced heart block and a special, fast-rate pulse generator. Based on studies to date, the Atomic Energy Commission has issued a license for limited clinical trial which has already begun at the collaborating institutions.
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