Renal involvement in feline immunodeficiency virus infection: p24 antigen detection, virus isolation and PCR analysis.
Renal alterations characterized morphologically by glomerular and tubulo-interstitial lesions and clinically by a heavy proteinuria and sometimes by renal failure are frequent in feline immunodeficiency virus (FIV) infected cats. To investigate the possible role of local FIV replication in the genesis of this renal damage, renal tissues of 15 consecutive naturally infected and five non-infected cats were examined for traces of the virus by immunohistochemistry, using a monoclonal anti-p24 antibody in a streptavidin-biotin peroxidase labeled system, cultivation and polymerase chain reaction (PCR). Tubular epithelial cells as well as scattered interstitial inflammatory and glomerular cells were positive for p24 antigen in 13 cats. Viral isolation was successful in seven cats, and FIV gag DNA and RNA sequences were detected in 14 and five cats, respectively. Control cats were constantly negative. Although not conclusive, these results suggest that a direct role of FIV in the induction of the renal damage observed in infected animals is possible.
Poli
A
A
Department of Animal Pathology, University of Pisa, Italy.
Abramo
F
F
Matteucci
D
D
Baldinotti
F
F
Pistello
M
M
Lombardi
S
S
Barsotti
P
P
Bendinelli
M
M
D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D002371:Cat Diseases / Q000821:virology*; D002415:Cats; D004279:DNA, Viral / Q000032:analysis; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary; D016181:Feline Acquired Immunodeficiency Syndrome / Q000821:virology*; D005260:Female; D015683:Gene Products, gag / Q000032:analysis / Q000235:genetics; D016089:Immunodeficiency Virus, Feline / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*; D007124:Immunoenzyme Techniques / Q000662:veterinary; D007668:Kidney / Q000473:pathology / Q000821:virology*; D007674:Kidney Diseases / Q000662:veterinary* / Q000821:virology; D008297:Male; D016133:Polymerase Chain Reaction / Q000662:veterinary; D012367:RNA, Viral / Q000032:analysis; D014776:Virus Cultivation / Q000662:veterinary; D014779:Virus Replication
D000956:Antigens, Viral; D004279:DNA, Viral; D015683:Gene Products, gag; D012367:RNA, Viral; C074662:p24 protein, Feline immunodeficiency virus