目的：比较全身麻醉联合硬膜外阻滞麻醉和单纯全身麻醉用于腹腔镜胆囊切除术对患者术中循环和应激反应的影响。方法行腹腔镜胆囊切除术择期手术患者60例，采用随机数字表法分为全身麻醉复合硬膜外阻滞麻醉组（A 组）和全身麻醉组（B 组...目的：比较全身麻醉联合硬膜外阻滞麻醉和单纯全身麻醉用于腹腔镜胆囊切除术对患者术中循环和应激反应的影响。方法行腹腔镜胆囊切除术择期手术患者60例，采用随机数字表法分为全身麻醉复合硬膜外阻滞麻醉组（A 组）和全身麻醉组（B 组），每组30例，比较两组麻醉前5 min（T0）、气腹后15 min （T1）、和停气腹后10 min（T2）的 MAP、HR、C-反应蛋白（CRP）、肾上腺素（E）和去甲肾上腺素（NE）浓度。结果 B 组 T1时的 MAP 和 HR[分别为（95．4±4．6）mmHg、（90．5±12．2）次／min]明显高于 A 组[分别为（87．1±6．0）mmHg、（83．2±13．5）次／min]（t1＝7．81，t2＝6．98，均 P ＜0．05）；B 组 T1、T2时的 E、NE 和 T2的CRP[分别为（242．1±40．5）ng／L、（271．5±31．5）ng／L、（238．0±41．8）ng／L、（265．1±40．6）ng／L、（39．3±3．9）mg／L]均明显高于 A 组[分别为（195．7±28．0）ng／L、（236．9±20．3）ng／L、（191．3±31．8）ng／L、（239．2±34．2）ng／L、（26．3±3．8）mg／L]（t1＝10．02，t2＝8．06，t3＝9．42，t4＝8．69，t5＝9．48，均 P ＜0．05）；A 组术后清醒及拔管时间[分别为（7．2±0．8）min、（11．2±7．3）min]明显短于 B 组[分别为（16．4±0．8）min、（18．8±0．4）min]（t1＝9．81，t2＝9．60，均 P ＜0．05）。结论相对于单纯全麻，全麻复合硬膜外阻滞则能较好地抑制术后应激反应。展开更多
OBJECTIVE: To examine the microvascular pathological characteristics and changes in related injury factors in a rat model of acute blood stasis.METHODS: A total of 75 Sprague-Dawley rats were divided randomly and equa...OBJECTIVE: To examine the microvascular pathological characteristics and changes in related injury factors in a rat model of acute blood stasis.METHODS: A total of 75 Sprague-Dawley rats were divided randomly and equally into a control group and four experimental groups assessed at different times after the induction of stasis(0, 1, 3 or 6 h after stasis)(n = 15). The acute blood stasis model was established through rat tail-vein injection of high-molecular-weight dextran. After Electrocardiograph(ECG) detection at predetermined times(0,1, 3 and 6 h after induction of stasis), the rats were sacrificed and blood and cardiac samples were harvested for analysis. Hematoxylin-eosin(HE) staining and transmission electron microscopy were used for histopathological detection; an enzyme linked immunosorbent assay(ELISA) was used to detect thromboxane B2(TXB2) and 6-keto-prostaglandin F1α(6-Keto-PGF1α) concentrations; a real-time polymerase chain reaction(PCR) reaction system was used to detect intercellular adhesion molecule1(ICAM-1) and vascular cell adhesion molecule1(VCAM-1) m RNA expression; western blotting was used to detect vascular endothelial cadherin(VE-cadherin) protein expression.RESULTS: The ST segment in the ECG showed gradual elevation after induction of stasis and continued elevation at a high level at 3 and 6 h. The HE staining showed changes in myocardial cell necrosis and tissue dissociation after the induction of stasis, along with inflammatory infiltration. Results of transmission electron microscopy showed immediate changes in blood stasis and lumen occlusion in the microvasculature, along with endothelial cell swelling. After the induction of stasis, TXB2 concentrations gradually increased while 6-Keto-PGF1αconcentrations were immediately significantly reduced. The TXB2/6-Keto-PGF1αratio was maintained at a high level. ICAM-1 m RNA expression showed an unstable elevation while VCAM-1 m RNA expression was significantly reduced after the induction of stasis. Compared with the control group, VE-cad展开更多
Objective: To test the hypothesis that acute phase reactants, such as alpha 1-antitrypsin and alpha 1-acid glycoprotein, could protect mammalian cells from further damage. Methods: Human dermal fibroblasts (5×10 ...Objective: To test the hypothesis that acute phase reactants, such as alpha 1-antitrypsin and alpha 1-acid glycoprotein, could protect mammalian cells from further damage. Methods: Human dermal fibroblasts (5×10 4) were cultured with DMEM plus 10% FBS at 37℃ in a 5% CO 2 incubator. Different doses of LPS (lipopolysaccharide) and/or acute phase reactants were added. After 24 hours, the cultured supernatant was aspirated, the cells were washed, fixed and stained by methylene blue. The unbound stain was washed off. The stained cells were solubilized in 0.1 ml of 1% Triton X-100. The absorbance of each well was measured using an ELISA spectrophotometer. The concentration of LPS which decreased the absorbance to 70% of the control (LPS-free) cultures was defined as LD 30. Results: In order to achieve LD 30 in the presence of acute phase proteins, it was necessary to alter the LPS concentrations. The LD 30 of LPS treated with 0, 0.5, 2, 10 mg/ml antitrypsin and 0, 0.5, 2, 10 mg/ml glycoprotein was 5.4, 6.5, 7.6, 14.2 mg/ml and 5.2, 5.9, 6.9, 10.5 mg/ml, respectively. Statistically, with the treatment of more than 2 mg/ml antitrypsin or glycoprotein, LD 30 increased significantly. Conclusions: Our data show that fibroblasts are susceptible to the direct toxicity of LPS. Alpha 1-antitrypsin and alpha 1-acid glycoprotein can reduce the toxicity and/or increase the tolerance of mammalian cells to LPS.展开更多
The COVID-19 pandemic has led to the greatest worldwide health crisis in decades.The number of infected patients with severe SARS-CoV-2(COVID-19)disease has overwhelmed the capacity of almost all health care systems a...The COVID-19 pandemic has led to the greatest worldwide health crisis in decades.The number of infected patients with severe SARS-CoV-2(COVID-19)disease has overwhelmed the capacity of almost all health care systems around world.Hypoalbuminemia has now been reported in patients with severe disease seeking help in the emergency room because of COVID-19 infection.In the past,hypoalbuminemia was considered to be a negative prognostic marker,not only in patients with chronic liver disease,but also in patients with SARS and MERS infections.Albumin is the major serum protein synthesized by the liver.A low serum albumin level is an ominous clinical sign.Introduction of amino acids to a patient's diet is of fundamental importance to hepatic albumin synthesis in different clinical situations.This highlights the importance of nutritional support during the early phases of COVID-19-infection.Furthermore,albumin synthesis in the hepatocyte is downregulated at a pretranslational level by the direct interaction of the major acute-phase cytokines which are released into the circulation during the cytokine"storm"induced by the viral effects on the lungs.Both mechanisms contribute to severe hypoalbuminemia which,combined with massive fluid losses due to the fever,is responsible for severe hypovolemia and shock commonly observed in patients with COVID-19 in critical care settings.展开更多
目的研究80岁以上高龄老年骨质疏松患者骨代谢特点及初次输注唑来膦酸注射液后急性期不良反应情况。方法回顾2011年1月-2017年9月在我院就诊的骨质疏松患者216例,按年龄分为高龄老年组(年龄≥80岁)96例、非高龄老年组(65岁≤年龄<80...目的研究80岁以上高龄老年骨质疏松患者骨代谢特点及初次输注唑来膦酸注射液后急性期不良反应情况。方法回顾2011年1月-2017年9月在我院就诊的骨质疏松患者216例,按年龄分为高龄老年组(年龄≥80岁)96例、非高龄老年组(65岁≤年龄<80岁)80例和绝经后非老年组(年龄<65岁绝经后女性)40例。测定并比较各组血钙、血磷、Ⅰ型胶原C-末端肽交联(C-terminal telopeptide of type I collagen,CTX)、Ⅰ型原胶原N-端前肽(procollagen type 1 N-peptide,P1NP)、甲状旁腺素(parathyroid hormone,PTH)、25-羟基维生素D[25 hydroxy vitamin D,25(OH)D]和临床等指标的差异。其中140例患者初次静滴唑来膦酸5 mg治疗,并按年龄分为80岁以上组(80^+组)75例和80岁以下组(80^-组)65例,观察两组输注唑来磷酸后两周内出现急性期不良反应(acute-phase response,APR)的情况。结果非高龄老年组血肌酐水平高于绝经后非老年组(P=0.01);高龄老年组与绝经后非老年组比较,血肌酐偏高(P=0.000),25(OH)D水平偏低(P=0.007),PTH水平偏高(P=0.032)。随着分组平均年龄的增大,CTX与P1NP有下降趋势,但组间比较差异无统计学意义。80^+组的APR总体发生率与80^-组比较差异无统计学意义,其中发热、肌骨痛的发生率在80^+组更低,差异有统计学意义(P<0.05)。结论 80岁以上高龄老年骨质疏松患者骨代谢并非都表现为低转换。初次使用5 mg唑来膦酸静滴,常见的不良反应如发热、肌骨痛的发生率更低。展开更多
文摘目的：比较全身麻醉联合硬膜外阻滞麻醉和单纯全身麻醉用于腹腔镜胆囊切除术对患者术中循环和应激反应的影响。方法行腹腔镜胆囊切除术择期手术患者60例，采用随机数字表法分为全身麻醉复合硬膜外阻滞麻醉组（A 组）和全身麻醉组（B 组），每组30例，比较两组麻醉前5 min（T0）、气腹后15 min （T1）、和停气腹后10 min（T2）的 MAP、HR、C-反应蛋白（CRP）、肾上腺素（E）和去甲肾上腺素（NE）浓度。结果 B 组 T1时的 MAP 和 HR[分别为（95．4±4．6）mmHg、（90．5±12．2）次／min]明显高于 A 组[分别为（87．1±6．0）mmHg、（83．2±13．5）次／min]（t1＝7．81，t2＝6．98，均 P ＜0．05）；B 组 T1、T2时的 E、NE 和 T2的CRP[分别为（242．1±40．5）ng／L、（271．5±31．5）ng／L、（238．0±41．8）ng／L、（265．1±40．6）ng／L、（39．3±3．9）mg／L]均明显高于 A 组[分别为（195．7±28．0）ng／L、（236．9±20．3）ng／L、（191．3±31．8）ng／L、（239．2±34．2）ng／L、（26．3±3．8）mg／L]（t1＝10．02，t2＝8．06，t3＝9．42，t4＝8．69，t5＝9．48，均 P ＜0．05）；A 组术后清醒及拔管时间[分别为（7．2±0．8）min、（11．2±7．3）min]明显短于 B 组[分别为（16．4±0．8）min、（18．8±0．4）min]（t1＝9．81，t2＝9．60，均 P ＜0．05）。结论相对于单纯全麻，全麻复合硬膜外阻滞则能较好地抑制术后应激反应。
基金the National Program on Key Basic Research Project(973 Program,No.2012CB518601)
文摘OBJECTIVE: To examine the microvascular pathological characteristics and changes in related injury factors in a rat model of acute blood stasis.METHODS: A total of 75 Sprague-Dawley rats were divided randomly and equally into a control group and four experimental groups assessed at different times after the induction of stasis(0, 1, 3 or 6 h after stasis)(n = 15). The acute blood stasis model was established through rat tail-vein injection of high-molecular-weight dextran. After Electrocardiograph(ECG) detection at predetermined times(0,1, 3 and 6 h after induction of stasis), the rats were sacrificed and blood and cardiac samples were harvested for analysis. Hematoxylin-eosin(HE) staining and transmission electron microscopy were used for histopathological detection; an enzyme linked immunosorbent assay(ELISA) was used to detect thromboxane B2(TXB2) and 6-keto-prostaglandin F1α(6-Keto-PGF1α) concentrations; a real-time polymerase chain reaction(PCR) reaction system was used to detect intercellular adhesion molecule1(ICAM-1) and vascular cell adhesion molecule1(VCAM-1) m RNA expression; western blotting was used to detect vascular endothelial cadherin(VE-cadherin) protein expression.RESULTS: The ST segment in the ECG showed gradual elevation after induction of stasis and continued elevation at a high level at 3 and 6 h. The HE staining showed changes in myocardial cell necrosis and tissue dissociation after the induction of stasis, along with inflammatory infiltration. Results of transmission electron microscopy showed immediate changes in blood stasis and lumen occlusion in the microvasculature, along with endothelial cell swelling. After the induction of stasis, TXB2 concentrations gradually increased while 6-Keto-PGF1αconcentrations were immediately significantly reduced. The TXB2/6-Keto-PGF1αratio was maintained at a high level. ICAM-1 m RNA expression showed an unstable elevation while VCAM-1 m RNA expression was significantly reduced after the induction of stasis. Compared with the control group, VE-cad
基金NationalNatureScienceFundGrant (No .395 0 0 15 0 ) OutstandingTalentFundGrantof NationalNatureScienceFundCommittee (No .3972 5 0 2 9)
文摘Objective: To test the hypothesis that acute phase reactants, such as alpha 1-antitrypsin and alpha 1-acid glycoprotein, could protect mammalian cells from further damage. Methods: Human dermal fibroblasts (5×10 4) were cultured with DMEM plus 10% FBS at 37℃ in a 5% CO 2 incubator. Different doses of LPS (lipopolysaccharide) and/or acute phase reactants were added. After 24 hours, the cultured supernatant was aspirated, the cells were washed, fixed and stained by methylene blue. The unbound stain was washed off. The stained cells were solubilized in 0.1 ml of 1% Triton X-100. The absorbance of each well was measured using an ELISA spectrophotometer. The concentration of LPS which decreased the absorbance to 70% of the control (LPS-free) cultures was defined as LD 30. Results: In order to achieve LD 30 in the presence of acute phase proteins, it was necessary to alter the LPS concentrations. The LD 30 of LPS treated with 0, 0.5, 2, 10 mg/ml antitrypsin and 0, 0.5, 2, 10 mg/ml glycoprotein was 5.4, 6.5, 7.6, 14.2 mg/ml and 5.2, 5.9, 6.9, 10.5 mg/ml, respectively. Statistically, with the treatment of more than 2 mg/ml antitrypsin or glycoprotein, LD 30 increased significantly. Conclusions: Our data show that fibroblasts are susceptible to the direct toxicity of LPS. Alpha 1-antitrypsin and alpha 1-acid glycoprotein can reduce the toxicity and/or increase the tolerance of mammalian cells to LPS.
文摘The COVID-19 pandemic has led to the greatest worldwide health crisis in decades.The number of infected patients with severe SARS-CoV-2(COVID-19)disease has overwhelmed the capacity of almost all health care systems around world.Hypoalbuminemia has now been reported in patients with severe disease seeking help in the emergency room because of COVID-19 infection.In the past,hypoalbuminemia was considered to be a negative prognostic marker,not only in patients with chronic liver disease,but also in patients with SARS and MERS infections.Albumin is the major serum protein synthesized by the liver.A low serum albumin level is an ominous clinical sign.Introduction of amino acids to a patient's diet is of fundamental importance to hepatic albumin synthesis in different clinical situations.This highlights the importance of nutritional support during the early phases of COVID-19-infection.Furthermore,albumin synthesis in the hepatocyte is downregulated at a pretranslational level by the direct interaction of the major acute-phase cytokines which are released into the circulation during the cytokine"storm"induced by the viral effects on the lungs.Both mechanisms contribute to severe hypoalbuminemia which,combined with massive fluid losses due to the fever,is responsible for severe hypovolemia and shock commonly observed in patients with COVID-19 in critical care settings.
文摘目的研究80岁以上高龄老年骨质疏松患者骨代谢特点及初次输注唑来膦酸注射液后急性期不良反应情况。方法回顾2011年1月-2017年9月在我院就诊的骨质疏松患者216例,按年龄分为高龄老年组(年龄≥80岁)96例、非高龄老年组(65岁≤年龄<80岁)80例和绝经后非老年组(年龄<65岁绝经后女性)40例。测定并比较各组血钙、血磷、Ⅰ型胶原C-末端肽交联(C-terminal telopeptide of type I collagen,CTX)、Ⅰ型原胶原N-端前肽(procollagen type 1 N-peptide,P1NP)、甲状旁腺素(parathyroid hormone,PTH)、25-羟基维生素D[25 hydroxy vitamin D,25(OH)D]和临床等指标的差异。其中140例患者初次静滴唑来膦酸5 mg治疗,并按年龄分为80岁以上组(80^+组)75例和80岁以下组(80^-组)65例,观察两组输注唑来磷酸后两周内出现急性期不良反应(acute-phase response,APR)的情况。结果非高龄老年组血肌酐水平高于绝经后非老年组(P=0.01);高龄老年组与绝经后非老年组比较,血肌酐偏高(P=0.000),25(OH)D水平偏低(P=0.007),PTH水平偏高(P=0.032)。随着分组平均年龄的增大,CTX与P1NP有下降趋势,但组间比较差异无统计学意义。80^+组的APR总体发生率与80^-组比较差异无统计学意义,其中发热、肌骨痛的发生率在80^+组更低,差异有统计学意义(P<0.05)。结论 80岁以上高龄老年骨质疏松患者骨代谢并非都表现为低转换。初次使用5 mg唑来膦酸静滴,常见的不良反应如发热、肌骨痛的发生率更低。
