PMID- 18687297 OWN - NLM STAT- MEDLINE DCOM- 20081110 LR - 20131121 IS - 1567-5769 (Print) IS - 1567-5769 (Linking) VI - 8 IP - 10 DP - 2008 Oct TI - Pentoxifylline down modulate in vitro T cell responses and attenuate pathology in Leishmania and HTLV-I infections. PG - 1344-53 LID - 10.1016/j.intimp.2008.03.020 [doi] AB - Tumor necrosis factor-alpha (TNF-alpha) is known to have numerous biological properties relating to inflammation. This cytokine participates in the tissue damage of chronic inflammatory, autoimmune and infectious diseases. Pentoxifylline is a methylxanthine that inhibits phosphodiesterase IV, which inhibits the degradation of the cAMP and prostanoids. The increased intracellular concentration of the cAMP leads to a negative regulation of NF-kappaB and NF-AT transcription factors and suppresses TNF-alpha production. This review describes studies that support evidences that TNF-alpha is involved in the pathogenesis of HTLV-1 associated myelopathy and of cutaneous and mucosal leishmaniasis. Additionally, it demonstrates the effect of pentoxifylline in vitro in inhibiting TNF-alpha and IFN-gamma spontaneous production in PBMC from HTLV-1-infected patients, as well as its in vivo effect in inhibiting TNF-alpha in sera from mucosal leishmaniasis patients. Moreover, we review the results of clinical studies from the last 10 years using pentoxifylline to treat HTLV-1 associated myelopathy and cutaneous and mucosal leishmaniasis. FAU - Ribeiro de Jesus, Amelia AU - Ribeiro de Jesus A AD - Servico de Imunologia, Hospital Universitario Prof. Edgard Santos, Universidade Federal da Bahia, Salvador, BA, Brazil. FAU - Luna, Tania AU - Luna T FAU - Pacheco de Almeida, Roque AU - Pacheco de Almeida R FAU - Machado, Paulo Roberto Lima AU - Machado PR FAU - Carvalho, Edgar M AU - Carvalho EM LA - eng PT - Journal Article DEP - 20080428 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Tumor Necrosis Factor-alpha) RN - 82115-62-6 (Interferon-gamma) RN - SD6QCT3TSU (Pentoxifylline) SB - IM MH - Animals MH - HTLV-I Infections/blood/immunology/*pathology MH - Humans MH - Interferon-gamma/blood MH - Leishmania MH - Leishmaniasis/blood/immunology/*pathology MH - Pentoxifylline/*pharmacology MH - T-Lymphocytes/*drug effects/immunology MH - Tumor Necrosis Factor-alpha/blood EDAT- 2008/08/09 09:00 MHDA- 2008/11/11 09:00 CRDT- 2008/08/09 09:00 PHST- 2007/10/15 00:00 [received] PHST- 2008/03/27 00:00 [revised] PHST- 2008/03/31 00:00 [accepted] PHST- 2008/08/09 09:00 [pubmed] PHST- 2008/11/11 09:00 [medline] PHST- 2008/08/09 09:00 [entrez] AID - S1567-5769(08)00111-2 [pii] AID - 10.1016/j.intimp.2008.03.020 [doi] PST - ppublish SO - Int Immunopharmacol. 2008 Oct;8(10):1344-53. doi: 10.1016/j.intimp.2008.03.020. Epub 2008 Apr 28.