PMID- 16979157 OWN - NLM STAT- MEDLINE DCOM- 20070130 LR - 20131121 IS - 0014-2999 (Print) IS - 0014-2999 (Linking) VI - 549 IP - 1-3 DP - 2006 Nov 7 TI - Aldose reductase inhibitor zopolrestat restores allergic hyporesponsiveness in alloxan-diabetic rats. PG - 173-8 AB - This study was undertaken to investigate the role of the aldose reductase in the refractoriness of diabetic rats to allergic inflammation. Wistar rats were actively sensitized with a mixture of Al(OH)3 plus ovalbumin and intrapleurally challenged with ovalbumin, 14 days later. Diabetes was induced by intravenous injection of alloxan into fasted rats, 7 days before sensitization, and the aldose reductase inhibitor zopolrestat was administered after 3 days of diabetes induction, once a day during 18 consecutive days. The treatment with zopolrestat restored antigen-induced protein extravazation and mast cell degranulation in the pleural cavity of diabetic sensitized rats. Zopolrestat also significantly reversed the suppression in the increase of total and specific levels of serum immunoglobulin E (IgE) noted in sensitized animals under conditions of diabetes. In addition, we noted that the drop in the pleural mast cell numbers as well as the increase in serum corticosterone levels in diabetic rats were inhibited by the drug. Our findings show that zopolrestat restored the hyporesponsiveness of diabetic rats to antigen provocation, in parallel with impairment of alloxan-induced mast cell depletion and hypercorticolism, indicating that polyol pathway activity seems to play an important role in these phenomena. FAU - Carvalho, Vinicius F AU - Carvalho VF AD - Laboratorio de Inflamacao, Departamento de Fisiologia e Farmacodinamica, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil, no 4365, Manguinhos, CEP 21045-900, Rio de Janeiro, Brazil. FAU - Barreto, Emiliano O AU - Barreto EO FAU - Serra, Magda F AU - Serra MF FAU - Cordeiro, Renato S B AU - Cordeiro RS FAU - Martins, Marco A AU - Martins MA FAU - Fortes, Zuleica Bruno AU - Fortes ZB FAU - e Silva, Patricia M R AU - e Silva PM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060826 PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Benzothiazoles) RN - 0 (Hypoglycemic Agents) RN - 0 (Immunoglobulin G) RN - 0 (Insulin) RN - 0 (Phthalazines) RN - 0 (Proteins) RN - 1PV3S9WP3D (zopolrestat) RN - 5QB0T2IUN0 (Aluminum Hydroxide) RN - 6SW5YHA5NG (Alloxan) RN - 9006-59-1 (Ovalbumin) RN - EC 1.1.1.21 (Aldehyde Reductase) RN - W980KJ009P (Corticosterone) SB - IM MH - Aldehyde Reductase/*antagonists & inhibitors/metabolism MH - Alloxan MH - Aluminum Hydroxide/immunology MH - Animals MH - Benzothiazoles/*pharmacology MH - Cell Count MH - Cell Degranulation/drug effects MH - Corticosterone/blood MH - Diabetes Mellitus, Experimental/blood/chemically induced/*physiopathology MH - Hypersensitivity/immunology/*physiopathology/prevention & control MH - Hypoglycemic Agents/pharmacology MH - Immunoglobulin G/blood MH - Insulin/blood MH - Male MH - Mast Cells/cytology/drug effects/physiology MH - Ovalbumin/immunology MH - Phthalazines/*pharmacology MH - Pleural Cavity/cytology/drug effects/metabolism MH - Proteins/metabolism MH - Rats MH - Rats, Wistar EDAT- 2006/09/19 09:00 MHDA- 2007/01/31 09:00 CRDT- 2006/09/19 09:00 PHST- 2006/02/23 00:00 [received] PHST- 2006/08/07 00:00 [revised] PHST- 2006/08/14 00:00 [accepted] PHST- 2006/09/19 09:00 [pubmed] PHST- 2007/01/31 09:00 [medline] PHST- 2006/09/19 09:00 [entrez] AID - S0014-2999(06)00883-1 [pii] AID - 10.1016/j.ejphar.2006.08.037 [doi] PST - ppublish SO - Eur J Pharmacol. 2006 Nov 7;549(1-3):173-8. doi: 10.1016/j.ejphar.2006.08.037. Epub 2006 Aug 26.