Document Detail

Isolation and chemical analysis of a fatty acid fraction of Kalanchoe pinnata with a potent lymphocyte suppressive activity.
MedLine Citation:
PMID:  10763586     Owner:  NLM     Status:  MEDLINE    
Previously we demonstrated that Kalanchoe pinnata (KP) leaf extracts inhibited in vitro lymphocyte proliferation and showed in vivo immunosuppressive activity. Here we attempt to identify the immunosuppressive substances present in KP guided by the lymphoproliferative assays. From the ethanolic extract was purified a fraction (KP12SA) twenty-fold more potent to block murine lymphocyte proliferation than the crude extract. Chemical analysis by 1H- and 13C-NMR, IR and GC-MS of KP12SA (methylated sample) showed 89.3% of palmitic acid (C16), 10.7% of stearic acid (C18) and traces of arachidic (C20) and behenic acids (C22). This study provides evidence that fatty acids present in Kalanchoe pinnata may be responsible, at least in part, for its immunosuppressive effect in vivo.
A P Almeida; S A Da Silva; M L Souza; L M Lima; B Rossi-Bergmann; V L de Moraes; S S Costa
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Planta medica     Volume:  66     ISSN:  0032-0943     ISO Abbreviation:  Planta Med.     Publication Date:  2000 Mar 
Date Detail:
Created Date:  2000-05-18     Completed Date:  2000-05-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0066751     Medline TA:  Planta Med     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  134-7     Citation Subset:  IM    
Nucleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Brazil.
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MeSH Terms
Cell Division / drug effects
Fatty Acids / isolation & purification,  pharmacology*
Immunosuppressive Agents / pharmacology*
Mice, Inbred BALB C
Plant Extracts / pharmacology*
Plants, Medicinal / chemistry*
T-Lymphocytes / cytology,  drug effects*
Reg. No./Substance:
0/Fatty Acids; 0/Immunosuppressive Agents; 0/Plant Extracts

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