Phenolic compounds from field-grown Inonotus obliquus sclerotia (Chaga) consist mainly of hispidin analogs and melanins, and are thought to be the active constituents to treat several human diseases. In submerged cult...Phenolic compounds from field-grown Inonotus obliquus sclerotia (Chaga) consist mainly of hispidin analogs and melanins, and are thought to be the active constituents to treat several human diseases. In submerged cultures of the fungus, however, no information is currently available on the production of phenolic compounds and their corresponding pharmacological functions. In this study, phenolic compounds from Chaga and submerged cultures of the fungus were assayed for their composition and immune-stimulating effects. Phenolic compounds produced by I. obliquus in submerged cultures mostly consist of flavonoids, together with small amounts of hispidin analogs and melanins. This is quite contrary to the situation in Chaga, where flavonoids are determined as trace elements. Furthermore, phenolic compounds from Chaga show capacity about two-fold higher than those produced in submerged cultures in inhibiting cyclophosphamide-induced reduction of bodyweight, spleen index and viability of peripheral lymphocytes in test mice. Thus less production of hispidin analogs and melanins is likely to be responsible for less immune-stimulating effects in phenolic compounds from submerged cultures, and additional factors should be imposed during submerged cultures of I. obliquus to regulate biosynthesis of phenolic compounds directed to the composition similar to Chaga.展开更多
目的:检测α-黑素细胞刺激素(α-melanocyte sti mulating hormone,α-MSH)及黑色素在不同类型自体移植皮片中的表达,并与自身正常皮肤作对照,初步认识α-MSH在自体移植皮片过度色素沉着中的作用。方法:利用免疫组织化学方法和银染-丽...目的:检测α-黑素细胞刺激素(α-melanocyte sti mulating hormone,α-MSH)及黑色素在不同类型自体移植皮片中的表达,并与自身正常皮肤作对照,初步认识α-MSH在自体移植皮片过度色素沉着中的作用。方法:利用免疫组织化学方法和银染-丽春红法检测自体移植皮片(包括全厚皮片、中厚皮片及刃厚皮片)与原供区及受区周围自体正常对照皮肤中α-MSH的蛋白表达及表皮中黑色素的含量。结果:α-MSH的表达定位于表皮基底部黑素细胞、角质形成细胞胞质,在大部分自体移植皮片中呈阳性表达,皮片愈薄α-MSH的表达愈明显(P<0.01);α-MSH在各类型皮片中的表达显著高于在自体正常对照皮肤中的表达(P<0.01);α-MSH在受区周围与原供区正常对照皮肤中的表达无显著性差异。不同类型皮片表皮中黑色素的含量较自体正常对照皮肤中黑色素含量明显增加(P<0.01);不同类型皮片间表皮中黑色素的含量亦均有显著性差异(P<0.01),皮片愈薄黑色素的含量愈多,且皮片中黑色素的含量与α-MSH的表达量呈正相关。结论:自体移植皮片中黑色素的含量与α-MSH的表达量呈正相关,表明α-MSH在自体移植皮片中的高表达能使皮片中黑色素含量增加,在自体移植皮片过度色素沉着中起重要调控作用。展开更多
基金a Grant from Natural Science Foundations of Education Department of Jiangsu Province (No. 05KJA36012)a Grant of Natural Science Foundations from the Government of Jiangsu Province (No. BK2006034)
文摘Phenolic compounds from field-grown Inonotus obliquus sclerotia (Chaga) consist mainly of hispidin analogs and melanins, and are thought to be the active constituents to treat several human diseases. In submerged cultures of the fungus, however, no information is currently available on the production of phenolic compounds and their corresponding pharmacological functions. In this study, phenolic compounds from Chaga and submerged cultures of the fungus were assayed for their composition and immune-stimulating effects. Phenolic compounds produced by I. obliquus in submerged cultures mostly consist of flavonoids, together with small amounts of hispidin analogs and melanins. This is quite contrary to the situation in Chaga, where flavonoids are determined as trace elements. Furthermore, phenolic compounds from Chaga show capacity about two-fold higher than those produced in submerged cultures in inhibiting cyclophosphamide-induced reduction of bodyweight, spleen index and viability of peripheral lymphocytes in test mice. Thus less production of hispidin analogs and melanins is likely to be responsible for less immune-stimulating effects in phenolic compounds from submerged cultures, and additional factors should be imposed during submerged cultures of I. obliquus to regulate biosynthesis of phenolic compounds directed to the composition similar to Chaga.
文摘目的:检测α-黑素细胞刺激素(α-melanocyte sti mulating hormone,α-MSH)及黑色素在不同类型自体移植皮片中的表达,并与自身正常皮肤作对照,初步认识α-MSH在自体移植皮片过度色素沉着中的作用。方法:利用免疫组织化学方法和银染-丽春红法检测自体移植皮片(包括全厚皮片、中厚皮片及刃厚皮片)与原供区及受区周围自体正常对照皮肤中α-MSH的蛋白表达及表皮中黑色素的含量。结果:α-MSH的表达定位于表皮基底部黑素细胞、角质形成细胞胞质,在大部分自体移植皮片中呈阳性表达,皮片愈薄α-MSH的表达愈明显(P<0.01);α-MSH在各类型皮片中的表达显著高于在自体正常对照皮肤中的表达(P<0.01);α-MSH在受区周围与原供区正常对照皮肤中的表达无显著性差异。不同类型皮片表皮中黑色素的含量较自体正常对照皮肤中黑色素含量明显增加(P<0.01);不同类型皮片间表皮中黑色素的含量亦均有显著性差异(P<0.01),皮片愈薄黑色素的含量愈多,且皮片中黑色素的含量与α-MSH的表达量呈正相关。结论:自体移植皮片中黑色素的含量与α-MSH的表达量呈正相关,表明α-MSH在自体移植皮片中的高表达能使皮片中黑色素含量增加,在自体移植皮片过度色素沉着中起重要调控作用。
