目的:探讨身体质量指数(body mass index,BMI)与放疗前、后乳腺癌相关淋巴水肿(breast cancer related lymphedema,BCRL)的相关性。方法:分析2013年11月至2015年2月281例于河北医科大学第四医院收治的单侧乳腺癌术后女性患者的前瞻性临...目的:探讨身体质量指数(body mass index,BMI)与放疗前、后乳腺癌相关淋巴水肿(breast cancer related lymphedema,BCRL)的相关性。方法:分析2013年11月至2015年2月281例于河北医科大学第四医院收治的单侧乳腺癌术后女性患者的前瞻性临床资料,根据BMI<25、25~27、BMI≥28分为BMI低组(n=94)、中组(n=89)、高组(n=98),比较健患侧上肢体积差(upper limb volume difference,ULVD),采用广义估计方程(GEE)模型和线性逻辑回归模型进行单因素和多因素分析,评估放疗对BCRL(定义为ULVD≥200 m L)的影响,并与其他BMI分界值分组结果进行比较。结果:放疗前、后ULVD平均值分别为40.6、42.9 m L,中位值均为30.0 m L,二者之间差异无统计学意义(P>0.05)。放疗前(2例缺失)BMI低、中、高组的BCRL发生率分别为2.2%(2/93)、6.8%(6/88)、13.3%(13/98),放疗后(1例缺失)分别为1.1%(1/93)、12.4%(11/89)、12.2%(12/98),GEE模型多因素分析显示放疗未增加BCRL率(P=0.529)。线性逻辑回归模型多因素分析显示,与BMI低组相比中组和高组放疗前(RR=4.199,P=0.693和RR=10.999,P=0.002)、放疗后(RR=13.287,P=0.047和RR=14.308,P=0.029)的BCRL发生率差异具有统计学意义。按BMI<25、25~29、BMI≥30分组,分析结果与以上类似。结论:乳腺癌患者术后放疗发生BCRL,中国乳腺癌患者理想的BMI<28,与国外欧美患者为主的BMI<30不同。展开更多
Lignocellulose is the most abundant renewable resource on earth.However,owing to the tightly entangled structural characteristics,it is challenging to convert lignocellulose into bio-based products in the biorefinery ...Lignocellulose is the most abundant renewable resource on earth.However,owing to the tightly entangled structural characteristics,it is challenging to convert lignocellulose into bio-based products in the biorefinery process without pretreatment.Pretreatment can destroy the natural resistance structure of lignocellulosic biomass,which is conducive to its downstream enzymatic saccharification and fermentation process.Physical,chemical,and physicochemical pretreatments have been widely conducted for lignocellulosic biomass;several updated approaches and peculiar chemicals have also been proposed for these pretreatment methods in the recent years.Hence,this study comprehensively reviews the novel technologies and chemicals that were applied in the various pretreatments.In addition,the mechanisms,advantages,and disadvantages of the updated pretreatments are discussed to provide a reference for developing new pretreatment methods.展开更多
文摘目的:探讨身体质量指数(body mass index,BMI)与放疗前、后乳腺癌相关淋巴水肿(breast cancer related lymphedema,BCRL)的相关性。方法:分析2013年11月至2015年2月281例于河北医科大学第四医院收治的单侧乳腺癌术后女性患者的前瞻性临床资料,根据BMI<25、25~27、BMI≥28分为BMI低组(n=94)、中组(n=89)、高组(n=98),比较健患侧上肢体积差(upper limb volume difference,ULVD),采用广义估计方程(GEE)模型和线性逻辑回归模型进行单因素和多因素分析,评估放疗对BCRL(定义为ULVD≥200 m L)的影响,并与其他BMI分界值分组结果进行比较。结果:放疗前、后ULVD平均值分别为40.6、42.9 m L,中位值均为30.0 m L,二者之间差异无统计学意义(P>0.05)。放疗前(2例缺失)BMI低、中、高组的BCRL发生率分别为2.2%(2/93)、6.8%(6/88)、13.3%(13/98),放疗后(1例缺失)分别为1.1%(1/93)、12.4%(11/89)、12.2%(12/98),GEE模型多因素分析显示放疗未增加BCRL率(P=0.529)。线性逻辑回归模型多因素分析显示,与BMI低组相比中组和高组放疗前(RR=4.199,P=0.693和RR=10.999,P=0.002)、放疗后(RR=13.287,P=0.047和RR=14.308,P=0.029)的BCRL发生率差异具有统计学意义。按BMI<25、25~29、BMI≥30分组,分析结果与以上类似。结论:乳腺癌患者术后放疗发生BCRL,中国乳腺癌患者理想的BMI<28,与国外欧美患者为主的BMI<30不同。
基金This work was sponsored by the Natural Science Foundation of Jiangsu Province(BK20180772)National Natural Science Foundation of China(31800501)Qing Lan Project.
文摘Lignocellulose is the most abundant renewable resource on earth.However,owing to the tightly entangled structural characteristics,it is challenging to convert lignocellulose into bio-based products in the biorefinery process without pretreatment.Pretreatment can destroy the natural resistance structure of lignocellulosic biomass,which is conducive to its downstream enzymatic saccharification and fermentation process.Physical,chemical,and physicochemical pretreatments have been widely conducted for lignocellulosic biomass;several updated approaches and peculiar chemicals have also been proposed for these pretreatment methods in the recent years.Hence,this study comprehensively reviews the novel technologies and chemicals that were applied in the various pretreatments.In addition,the mechanisms,advantages,and disadvantages of the updated pretreatments are discussed to provide a reference for developing new pretreatment methods.
