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941.
942.
Ganoderma mutabile is described as new from Yunnan Province, southwestern China. Morphologically, G. mutabile is characterized by the sessile basidiocarps, laccate and reddish brown pileus, white pore surface, cinnamon to fulvous context, broadly ellipsoid basidiospores (9.7–11.2?×?7–7.8 μm) with coarse echinulae, and the strongly irregular diverticulated cuticle hyphae of diverse shapes. Phylogenetic analysis of nuc-ITS sequences shows that G. mutabile is closely related to the G. applanatum complex. 相似文献
943.
Ping Wang Jiugang Yuan Xuehong Ren Li Cui Qiang Wang Xuerong Fan 《Engineering in Life Science》2013,13(1):102-108
Covalently bound lipids cover the wool surface and make enzymatic degradation of wool scales very difficult. In this paper, methanolic potassium hydroxide (MPH) pretreatment was used prior to enzymatic treatment of wool with protease, aiming at hydrolyzing the outmost lipids on the wool surface and promoting the subsequent proteolytic reaction. The efficacy of lipid removal from the fiber surface and the properties of the protease‐treated wool were evaluated. The results indicated that mild MPH pretreatment with 0.10 mol/L MPH for 10 min improved the wettability of the wool without adverse impacts on its mechanical properties. The wetting time and area shrinkage of the wool fabric reached 0.5 s and 5.6%, respectively, and the strength loss was within the acceptable range. Pretreatment with high concentrations of MPH for longer times led to significant damage to the wool fibers and caused heavy strength loss, without improving the antifelting properties after protease treatment. Thus, the combination of mild MPH and protease treatments endowed the wool with desirable properties in contrast to the treatment with protease alone. 相似文献
944.
945.
目的:通过检测肿瘤出芽、淋巴结转移以及血管内皮生长因子-C(VEGF—C)表达水平,分析口腔癌中肿瘤出芽与VEGF—C表达及淋巴结转移的相关关系,为临床治疗提供理论参考。方法:选取2009年1月-2013年1月4年间在我院接受诊治且资料完整63例口腔癌患者作为研究对象,观察肿瘤出芽、VEGF-C表达和淋巴结转移情况,分析相互之间的相关关系。结果:本次纳入研究的患者中,检出肿瘤出芽患者40例,所占比例为63.5%,VEGF—C表达阳性患者39例,阳性率率为61.9%,淋巴结转移患者40例,转移率为63.5%;肿瘤出芽与淋巴结转移的符合率为84.1%,肿瘤出芽与VEGF—C的表达符合率为79.4%,VEGF-C的表达与淋巴结转移发生的符合率为76.2%。肿瘤出芽与淋巴结转移呈正相关,经Spear相关分析,r=0.932,P〈0.05,与VEGF-C的表达也呈正相关,经Spear相关分析,r=0.897,P〈0.05。结论:肿瘤出芽与VEGF—C的表达水平和淋巴结转移均呈正相关关系,可用于预测判断口腔癌淋巴结转移情况。 相似文献
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947.
948.
Eunice Sok Ping Leong Yan Jun Liu Chan Choy Chum Jing Hua Teng 《Plasmonics (Norwell, Mass.)》2013,8(2):1221-1226
Optical magnetic responses were demonstrated in subwavelength Ag–MgF2–Ag grating structures for transverse magnetic-polarized light. The subwavelength Ag–MgF2–Ag grating structures were fabricated using e-beam lithography followed by a lift-off process. By fixing the Ag–MgF2–Ag strip dimension, the effect of the stripe width on the magnetic resonances was compared for two different grating pitches. With further reduced grating pitch, we pushed the optical magnetic resonances to near UV (deep blue). Numerical simulations confirmed our experimental observations and were in good agreement with the experimental results. 相似文献
949.
Tianjiao Lyu Nan Jia Jieyu Wang Xiaohui Yan Yinhua Yu Zhen Lu Robert C Bast Jr Keqin Hua Weiwei Feng 《Epigenetics》2013,8(12):1330-1346
The initiation of angiogenesis can mark the transition from tumor dormancy to active growth and recurrence. Mechanisms that regulate recurrence in human cancers are poorly understood, in part because of the absence of relevant models. The induction of ARHI (DIRAS3) induces dormancy and autophagy in human ovarian cancer xenografts but produces autophagic cell death in culture. The addition of VEGF to cultures maintains the viability of dormant autophagic cancer cells, thereby permitting active growth when ARHI is downregulated, which mimics the “recurrence” of growth in xenografts. Two inducible ovarian cancer cell lines, SKOv3-ARHI and Hey-ARHI, were used. The expression level of angiogenesis factors was evaluated by real-time PCR, immunohistochemistry, immunocytochemistry and western blot; their epigenetic regulation was measured by bisulfite sequencing and chromatin immunoprecipitation. Six of the 15 angiogenesis factors were upregulated in dormant cancer cells (tissue inhibitor of metalloproteinases-3, TIMP3; thrombospondin-1, TSP1; angiopoietin-1; angiopoietin-2; angiopoietin-4; E-cadherin, CDH1). We found that TIMP3 and CDH1 expression was regulated epigenetically and was related inversely to the DNA methylation of their promoters in cell cultures and in xenografts. Increased H3K9 acetylation was associated with higher TIMP3 expression in dormant SKOv3-ARHI cells, while decreased H3K27me3 resulted in the upregulation of TIMP3 in dormant Hey-ARHI cells. Elevated CDH1 expression during dormancy was associated with an increase in both H3K4me3 and H3K9Ac in two cell lines. CpG demethylating agents and/or histone deacetylase inhibitors inhibited the re-growth of dormant cancer cells, which was associated with the re-expression of anti-angiogenic genes. The expression of the anti-angiogenic genes TIMP3 and CDH1 is elevated during dormancy and is reduced during the transition to active growth by changes in DNA methylation and histone modification. 相似文献
950.