PMID- 16641452 OWN - NLM STAT- MEDLINE DCOM- 20060609 LR - 20211020 IS - 0066-4804 (Print) IS - 1098-6596 (Electronic) IS - 0066-4804 (Linking) VI - 50 IP - 5 DP - 2006 May TI - Minocycline impedes African trypanosome invasion of the brain in a murine model. PG - 1798-804 AB - Passage of Trypanosoma brucei across the blood-brain barrier (BBB) is a hallmark of late-stage human African trypanosomiasis. In the present study we found that daily administration of minocycline, a tetracycline antibiotic, impedes the penetration of leukocytes and trypanosomes into the brain parenchyma of T. brucei brucei-infected C57BL/6 mice. The trypanosome-induced astrocytic and microglial reactions were reduced in the minocycline-treated mice, as were the levels in the brain of transcripts encoding adhesion molecules intercellular adhesion molecule 1 (ICAM-1) and endothelial-leukocyte adhesion molecule 1 (E-selectin); the inflammatory cytokines tumor necrosis factor alpha, interleukin-1alpha (IL-1alpha), IL-1beta, IL-6, and gamma interferon; and matrix metalloprotease 3 (MMP-3), MMP-8, and MMP-12. Loss of weight occurring during infection with T. b. brucei was not observed after treatment of the mice with minocycline; these mice also survived longer than nontreated mice. Invasion of trypanosomes and leukocytes into the brain parenchyma most likely triggered the loss of weight and death of infected animals, since minocycline did not affect the growth of T. b. brucei either in vitro or in vivo or the levels of the transcripts encoding the cytokines and MMPs in the spleen. In conclusion, our data show that T. b. brucei invasion of the brain is related to that of leukocytes and that minocycline can ameliorate the disease in trypanosome-infected mice. FAU - Masocha, Willias AU - Masocha W AD - Department of Neuroscience, Retzius vag 8, Karolinska Institutet, SE-171 77 Stockholm, Sweden. willias.masocha@ki.se FAU - Rottenberg, Martin E AU - Rottenberg ME FAU - Kristensson, Krister AU - Kristensson K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Antimicrob Agents Chemother JT - Antimicrobial agents and chemotherapy JID - 0315061 RN - 0 (Anti-Bacterial Agents) RN - 0 (Cytokines) RN - 0 (E-Selectin) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - EC 3.4.24.- (Matrix Metalloproteinases) RN - FYY3R43WGO (Minocycline) SB - IM MH - Analysis of Variance MH - Animals MH - Anti-Bacterial Agents/*pharmacology MH - Blood-Brain Barrier/cytology/*parasitology MH - Cytokines/metabolism MH - *Disease Models, Animal MH - E-Selectin/metabolism MH - Immunohistochemistry MH - Intercellular Adhesion Molecule-1/metabolism MH - Matrix Metalloproteinases/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Minocycline/*pharmacology MH - Reverse Transcriptase Polymerase Chain Reaction MH - Survival Analysis MH - Trypanosoma brucei brucei/*physiology PMC - PMC1472198 EDAT- 2006/04/28 09:00 MHDA- 2006/06/10 09:00 PMCR- 2006/09/01 CRDT- 2006/04/28 09:00 PHST- 2006/04/28 09:00 [pubmed] PHST- 2006/06/10 09:00 [medline] PHST- 2006/04/28 09:00 [entrez] PHST- 2006/09/01 00:00 [pmc-release] AID - 50/5/1798 [pii] AID - 1338-05 [pii] AID - 10.1128/AAC.50.5.1798-1804.2006 [doi] PST - ppublish SO - Antimicrob Agents Chemother. 2006 May;50(5):1798-804. doi: 10.1128/AAC.50.5.1798-1804.2006.