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10.1046/j.1365-2567.2000.00070.x http://scihub22266oqcxt.onion/10.1046/j.1365-2567.2000.00070.x C2327029!2327029 !10929076     free     free     free Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=10929076 &cmd=llinks): Failed to open stream: HTTP request failed! 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Vitamin E supplementation increases T helper 1 cytokine production in old mice infected with influenza virus |pdf=|usr=}}{{10929076 }} gab.com Text Vitamin E supplementation increases T helper 1 cytokine production in old mice infected with influenza virus JO: Immunology http://www.kidney.de/pget.php?&tw=1&pmid=10929076 #FOAvip Compared with young mice, old mice infected with influenza virus have significantly higher pulmonary viral titres, although these can be reduced significantly with dietary vitamin E supplementation. T helper 1 (Th1) cytokines, especially interferon-gamma (IFN-gamma), play an important role in defending against influenza infection. However, there is an age-associated loss of Th1 cytokine production. Prostaglandin E2 (PGE2) production, which increases with age, can modulate the T helper cell function by suppressing Th1 cytokine production. To investigate the mechanism of vitamin E supplementation on reduction of influenza severity in old mice, we studied the cytokine production by splenocytes, and PGE2 production by macrophages (Mphi), in young and old C57BL mice fed semipurified diets containing 30 (control) or 500 parts per million (ppm) (supplemented) vitamin E for 8 weeks, and then infected with influenza A/PC/1/73 (H3N2). Old mice fed the control diet had significantly higher viral titres than young mice; old mice fed the vitamin E-supplemented diet had significantly lower pulmonary viral titres than those fed the control diet (P = 0.02 and 0.001 for overall age and diet effect, respectively). Following influenza infection, interleukin (IL)-2 and IFN-gamma production was significantly lower in old mice than in young mice. Vitamin E supplementation increased production of IL-2 and IFN-gamma in old mice; higher IFN-gamma production was associated with lower pulmonary viral titre. Old mice fed the control diet showed significantly higher lipopolysaccharide (LPS)-stimulated Mphi PGE2 production than old mice fed the vitamin E diet or young mice fed either diet. There was no significant age difference in IL-6, IL-1beta, or tumour necrosis factor-alpha (TNF-alpha) production by splenocytes. Young mice fed the vitamin E-supplemented diet had significantly lower IL-1beta (day 7) and TNF-alpha production (day 5) compared with those fed the control diet. Old mice fed the vitamin E-supplemented diet had significantly lower TNF-alpha production (day 2) than those fed the control diet. Our results indicate that the vitamin E-induced decrease in influenza viral titre is mediated through enhancement of Th1 cytokines, which may be the result of reduced PGE2 production caused by vitamin E. Twit Text FOAVip Vitamin E supplementation increases T helper 1 cytokine production in old mice infected with influenza virus ????Immunology http://www.kidney.de/pget.php?&tw=1&pmid=10929076 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=10929076 #FOAvip English Wikipedia <ref>{{Cite pmid|10929076 }}</ref> Vitamin E supplementation increases T helper 1 cytokine production in old mice infected with influenza virus #MMPMID10929076 Han SN ; Wu D ; Ha WK ; Beharka A ; Smith DE ; Bender BS ; Meydani SN Immunology 2000[Aug]; 100 (4 ): 487-93 PMID10929076 show ga Compared with young mice, old mice infected with influenza virus have significantly higher pulmonary viral titres, although these can be reduced significantly with dietary vitamin E supplementation. T helper 1 (Th1) cytokines, especially interferon-gamma (IFN-gamma), play an important role in defending against influenza infection. However, there is an age-associated loss of Th1 cytokine production. Prostaglandin E2 (PGE2) production, which increases with age, can modulate the T helper cell function by suppressing Th1 cytokine production. To investigate the mechanism of vitamin E supplementation on reduction of influenza severity in old mice, we studied the cytokine production by splenocytes, and PGE2 production by macrophages (Mphi), in young and old C57BL mice fed semipurified diets containing 30 (control) or 500 parts per million (ppm) (supplemented) vitamin E for 8 weeks, and then infected with influenza A/PC/1/73 (H3N2). Old mice fed the control diet had significantly higher viral titres than young mice; old mice fed the vitamin E-supplemented diet had significantly lower pulmonary viral titres than those fed the control diet (P = 0.02 and 0.001 for overall age and diet effect, respectively). Following influenza infection, interleukin (IL)-2 and IFN-gamma production was significantly lower in old mice than in young mice. Vitamin E supplementation increased production of IL-2 and IFN-gamma in old mice; higher IFN-gamma production was associated with lower pulmonary viral titre. Old mice fed the control diet showed significantly higher lipopolysaccharide (LPS)-stimulated Mphi PGE2 production than old mice fed the vitamin E diet or young mice fed either diet. There was no significant age difference in IL-6, IL-1beta, or tumour necrosis factor-alpha (TNF-alpha) production by splenocytes. Young mice fed the vitamin E-supplemented diet had significantly lower IL-1beta (day 7) and TNF-alpha production (day 5) compared with those fed the control diet. Old mice fed the vitamin E-supplemented diet had significantly lower TNF-alpha production (day 2) than those fed the control diet. Our results indicate that the vitamin E-induced decrease in influenza viral titre is mediated through enhancement of Th1 cytokines, which may be the result of reduced PGE2 production caused by vitamin E. |*Influenza A virus [MESH] |Aging/immunology [MESH] |Animals [MESH] |Cell Culture Techniques [MESH] |Cytokines/*biosynthesis [MESH] |Dinoprostone/biosynthesis [MESH] |Macrophages, Peritoneal/immunology [MESH] |Male [MESH] |Mice [MESH] |Mice, Inbred C57BL [MESH] |Orthomyxoviridae Infections/*immunology/prevention & control/virology [MESH] |Spleen/immunology [MESH] |Th1 Cells/*drug effects/immunology [MESH]Vitamin E supplementation increases T helper 1 cytokine production in (epmc).pdf DeepDyve Pubget Overpricing