Abstract:
:Alpha-melanocyte-stimulating hormone (alpha-MSH) is an endogenous neuroimmunomodulatory peptide that can inhibit a broad range of inflammatory mediators known to be involved in the pathophysiology of bacterial meningitis. We evaluated the effect of alpha-MSH in a rat model of pneumococcal meningitis. Rats were intracisternally infected with Streptococcus pneumoniae and treatment was started 6 h after infection. Both systemic and intracisternal alpha-MSH failed to influence blood-brain barrier disruption, increased intracranial pressure, brain cytokine concentrations (IL-1beta, IL-6, TNF-alpha, MIP-2, and IL-10), CSF bacterial titers, and clinical parameters of disease severity (weight loss, body temperature, and blood pressure), although the treatment strongly increased the CNS concentrations of alpha-MSH. However, systemic but not intracisternal alpha-MSH slightly reduced the CNS leukocyte accumulation, indicating that leukocyte extravasation is inhibited by alpha-MSH from the blood side. Our results show that alpha-MSH reduces the CNS leukocyte accumulation by its systemic action, but does not attenuate meningitis-associated intracranial complications.
journal_name
J Neuroimmunoljournal_title
Journal of neuroimmunologyauthors
Kastenbauer S,Koedel U,Brzoska T,Luger TA,Pfister HWdoi
10.1016/s0165-5728(01)00277-6subject
Has Abstractpub_date
2001-05-01 00:00:00pages
56-61issue
1eissn
0165-5728issn
1872-8421pii
S0165-5728(01)00277-6journal_volume
116pub_type
杂志文章abstract::HLA-DR, Iba1 and CD68 are widely used microglia markers in human tissue. However, due to differences in gene regulation, they may identify different activation stages of microglia. Here, we directly compared the expression of HLA-DR, Iba1 and CD68 in microglia with different phenotypes, ranging from ramified to amoebo...
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journal_title:Journal of neuroimmunology
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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