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1.
目的:探讨血清瘦素、甲状腺激素及肿瘤坏死因子α(TNF-α)在慢性阻塞性肺疾病(COPD)患者营养不良发生中的意义.方法:用放射免疫法测定68例COPD患者(分为营养不良组,即COPD Ⅰ组35例;非营养不良组,即COPDⅡ组33例)及30例健康人对照组的血清瘦素、甲状腺激素和TNF-α浓度,并测定体重指数(BMI)、理想体重百分比(NW%)、肱三头肌皮皱厚度(TSF)、臂中部臂圉(MAC),血清白蛋白(ALB),总淋巴细胞计数(LYM)等指标.分析瘦素与各项营养参数、TNF-α及甲状腺激素的相关性.结果:(1)COPD患者血清瘦素浓度均明显低于对照组;其中,Ⅰ组血清瘦素浓度低于Ⅱ组.(2)COPD患者血清TNF-α水平明显高于对照组.且Ⅰ组高于Ⅱ组.(3)COPD Ⅰ组血清T3浓度和T4浓度低于Ⅱ组和对照组(P<0.05),而Ⅱ组的T3、T4水平与对照组无显著差异.(4)COPD组及对照组的血清疫素均和BMI、NM%、TSF等营养状况指标呈正相关,还与促甲状腺素呈正相关,而与TNF-α浓度之间无显著相关性.(5)COPD组内女性患者血清瘦素浓度高于男性,有显著差异,而对照组内则无显著差异.结论:血清瘦素浓度与COPD患者的营养参数、性别有关.瘦素的调节不受TNF-α系统的控制,瘦素和甲状腺激素之间相互调节共同维持机体能量平衡,瘦素可能参与了COPD时营养不良的发生.  相似文献   

2.
COPD患者缺氧对TNF-α系统的激活及与营养不良的相关性   总被引:4,自引:2,他引:4  
詹娟  孙圣华 《医学临床研究》2003,20(12):881-884
目的研究慢性阻塞性肺疾病 (COPD)患者缺氧对TNF α系统的激活及与营养不良的关系 ,探讨COPD营养不良的发生机制。方法研究对象为 2 7例COPD稳定期患者及 2 9名正常人 ,COPD患者分为Ⅰ组 (营养不良组 ) 1 2例 ,Ⅱ组 (非营养不良组 ) 1 5例 ,测定其血清可溶性肿瘤坏死因子受体 5 5 (sTNF R5 5 )浓度、体重指数 (BMI)、理想体重百分比 (NW % )、体脂百分比 (fat% )、上臂中部臂围 (MAC)、血清白蛋白(ALB)、总淋巴细胞计数 (LYM) ,对COPD稳定期患者加测动脉血气分析。血清sTNF R5 5浓度通过酶联免疫吸附实验 (ELISA)法检测 ,并分析COPD患者血清sTNF R5 5浓度与动脉血氧分压 (PO2 )、营养参数之间的相关性。结果①COPD稳定期患者BMI、NW %、fat%、MAC、ALB、LYM均显著低于正常对照组 (P <0 .0 1 ) ,血清sTNF R5 5浓度显著高于正常对照组 (P <0 .0 5 ) ;②Ⅰ组年龄、血清sTNF R5 5浓度均显著高于对照组 (P <0 .0 5 ) ,BMI、NW %、fat%、MAC、ALB、LYM均显著低于对照组 (P <0 .0 1 ) ,Ⅰ组BMI、NW %、fat %、MAC、ALB、LYM也显著低于Ⅱ组 (P <0 .0 1 ) ;③Ⅰ组血清sTNF R5 5浓度与PO2 、BMI、NW %、fat%、ALB呈显著负相关 (P <0 .0 5 ) ;④COPD患者血清sTNF R5 5浓度与年龄呈正相关 ,而正常对照组  相似文献   

3.
目的了解食管癌患者手术前后白细胞介素-8(IL-8)、白细胞介素-18(IL-18)的水平及其与肿瘤临床分期之间的关系。方法用酶联免疫吸附试验(ELISA)检测130名对照者及80例食管癌早期(Ⅰ~Ⅱ)患者和58例晚期(Ⅲ~Ⅳ)患者手术前后血清IL-8、IL-18水平。结果食管癌早期组血清IL-8[(85.88±6.13)ng/L]、IL-18[(301.28±45.66)ng/L]和食管癌晚期组IL-8[(120.42±6.12)ng/L]、IL-18[(412.30±50.81)ng/L]均显著高于正常对照组IL-8[(54.38±11.18)ng/L]、IL-18[(181.36±50.32)ng/L,P<0.01],晚期组较早期组升高(P<0.01);转移组手术后血清IL-8[(148.36±9.56)ng/L]、IL-18[(451.66±50.35)ng/L]水平较手术前IL-8[(122.94±9.85)ng/L]、IL-18[(415.35±51.05)ng/L]高(P<0.01),无转移组手术后IL-8[(71.68±9.66)ng/L]、IL-18[(225.99±41.78)ng/L]较...  相似文献   

4.
目的:探讨各种不同病因心力衰竭患者血清瘦素水平改变及其与胰岛素水平间的关系。方法:入选各种心力衰竭患者90例,男性心衰患者56例,女性34名,另40例为40~75岁之间的无心衰的对照组。测定所有研究对象血清瘦素、血糖、胰岛素水平,并分别测量体重指数(BMI)和腰围/臀围比值(WHR)。结果:心衰组血清瘦素水平为[(166.78±25.76)pg/mL]显著高于同龄女性正常组[(90.60±20.90)pg/mL]和同龄男性心衰患者[(61.38±29.04)pg/mL](P<0.05,P<0.01),且与BMI、WHR及空腹胰岛素浓度呈正相关(r=0.61,0.52,0.64,P<0.01)。女性心衰患者胰岛素水平[(25.87±5.78)mU/L]较正常对照组[(19.21±6.10)mU/L]明显增高(P<0.05),但两者血糖水平并无差异。结论:心力衰竭患者血清瘦素水平显著升高,尤以女性为显著,且与胰岛素水平呈正相关。  相似文献   

5.
目的探讨慢性心力衰竭(CHF)患者血清瘦素水平改变及其与胰岛素抵抗、胰岛素水平之间的关系.方法观察40例CHF患者(男性)及20例正常对照组(男性)血清瘦素水平变化,分析血清瘦素与胰岛素抵[(以胰岛素敏感指数(IAI)表示]、胰岛素水平之间的关系. 结果 CHF组血清瘦素水平较正常对照组明显升高[(6.1±2.1) μg/L vs (3.8±1.1) μg/L, P<0.01].与对照组相比,CHF组胰岛素浓度升高[(18±3)mU/L vs (10±2)mU/L, P=0.02],具有更高的IAI(4.4±0.6 vs 3.8±0.7, P<0.01).血清瘦素与胰岛素水平及胰岛素抵抗程度(IAI)显著正相关(r=0.803, 0.716, P<0.01). 结论 CHF患者血清瘦素水平较正常对照组升高.CHF患者存在高胰岛素血症和胰岛素抵抗.血清瘦素与血胰岛素浓度和IAI呈正相关,提示胰岛素-瘦素内分泌轴可能与慢性心衰的高能量消耗状态有关.  相似文献   

6.
目的探讨血管内皮生长因子(VEGF)在阻塞性睡眠呼吸暂停低通气综合征(OSAHS)病理生理过程中的意义。方法①应用酶联免疫吸附法检测40例OSAHS患者(OSAHS合并心脑血管病26例,未合并心脑血管病的单纯OSAHS14例)和30例正常人的血浆VEGF浓度。②将26例OSAHS合并心脑血管病患者分为2组:15例经鼻持续正压通气(nCPAP)治疗(nCPAP治疗组);11例OSAHS合并心脑血管病患者不予任何针对OSAHS的治疗(对照组);比较2组治疗前后的血浆VEGF浓度。结果①OSAHS组血浆VEGF浓度高于正常对照组[(182.5±41.6)ng/L与(117.0±56.2)ng/L,P<0.01],并且与呼吸紊乱指数(r=0.919,P<0.01)、夜间缺氧时间(r=0.945、P<0.01)呈正相关。且OSAHS合并心脑血管病患者VEGF均高于单纯OSAHS患者[(248.4±105.9)ng/L与(161.7±43.2)ng/L,P<0.01]。②经nCPAP治疗半年后,OSAHS合并心脑血管病患者血浆VEGF浓度下降[(252.3±124.9)ng/L与(154.3±50.1)ng/L,P<0.01];对照组观察终点的血浆VEGF浓度较观察起点略有增加[(239.6±101.2)ng/L与(270.0±88.3)ng/L],但差异无显著性(P>0.05)。结论VEGF可能参与了OSAHS相关性心脑血管病的发生发展过程。  相似文献   

7.
目的 观察瘦素预处理和缺血预处理(IPC)对心肌缺血/再灌注损伤(MIRI)模型小鼠的心肌保护作用,探讨瘦素参与的机制.方法 将36只C57BL/6小鼠按随机数字表法分为5组:①假手术组(12只);②短暂缺血/再灌注(I/R)组(6只):缺血3 min后再灌注5 min,进行3个短暂的循环;⑨标准I/R组(6只):缺血30 min后再灌注120 min,④IPC组(6只):行3个短暂I/R循环后再进行标准I/R操作;⑤瘦素预处理组(6只):缺血前30min腹腔注射50μg/kg小鼠重组瘦素.假手术组和短暂I/R组分别于再灌注后0(RP刻)、5、30、120 min取血,动态监测血清瘦素水平;其余各组于再灌注后120 min处死小鼠,观察心肌梗死面积、心肌瘦素水平、髓过氧化物酶(MPO)活性,以及血清瘦素、肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)水平.结果 短暂I/R处理后5 min血清瘦素水平即较假手术组同期显著升高[(6.24±2.34)μg/L比(1.35±0.45)μg/L],30 min达峰值[(12.36±1.33)μg/L],之后逐渐下降,与假手术组水平同期比较差异无统计学意义[(1.96±1.33)μg/L比(1.16±0.25)μg/L,P>0.05].与标准I/R组比较,瘦素预处理组与IPC组均可显著缩小梗死面积[(11.50±2.86)%、(9.00±1.90)%比(37.00±2.53)%],降低心肌瘦素[(8.36±3.42)μg/g、(6.71±2.03)μg/g比(15.51±3.92)μg/g]、MPO((17.10±3.95)μg/g、(13.33±2.88)μg/g比(30.83±4.06)μg/g]以及血清瘦素[(15.03±1.87)μ/L、(11.85±0.72)μg/L比(29.55±2.31)μg/L]、TNF-α[(35.10±10.12)ng/L、(27.04±5.18)ng/L比(81.34±14.20)ng/L]、IL-6[(167.39±72.83)ng/L、(149.13±37.69)ng/L比(477.30±29.09)ng/L]水平(均P<0.01).结论 低剂量瘦素预处理可模仿经典的IPC以减轻MIRI,瘦素参与IPC的心肌保护机制可能与减轻炎症反应有关.  相似文献   

8.
目的 探讨慢性阻塞性肺疾病(COPD)患者白细胞介素-8(IL-8)及白细胞三烯B4(LTB4)水平的变化及在发病中的作用.方法 采用酶联免疫吸附法(ELISA)测定30例COPD患者急性加重期和缓解期及20例健康成人的血清及痰液中IL-8及LTB4含量.结果 COPD患者急性加重期血清及痰液中IL-8含量分别为(181.41±18.49)ng/L和(74.03±20.64)ng/L,高于缓解期[(152.33±17.48)ng/L和(42.30±14.99)ng/L,均P<0.05],缓解期显著高于健康对照组(52.75±13.79)ng/L和(17.15±5.36)ng/L,均P<0.05);COPD患者急性加重期痰液LTB4含量[(2300.91±496.01)ng/L],显著高于缓解期[(1884.14±651.37)ng/L,P<0.05],COPD患者急性加重期血清LTB4含量[(2044.12±309.43)ng/L]与缓解期及对照组比较差异均无统计学意义[(1941.30±301.62)、(1880.77±302.11)ng/L,均P>0.05].结论 IL-8与LTB4共同参与了COPD气道炎症反应的过程.  相似文献   

9.
目的探讨稳定期慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者血浆及诱导痰中炎性因子水平的变化及意义。方法稳定期COPD患者201例为COPD组,根据改良呼吸困难指数(modified British Medical Research Council,mMRC)评分、COPD评估测试(COPD assessment test,CAT)评分、急性加重发作次数分为4个亚组,A组11例(mMRC评分为0~1级,CAT评分10分,急性加重发作次数0~1次),B组33例(mMRC≥2级,CAT评分≥10分,急性加重发作次数0~1次),C组32例(mMRC评分为0~1级,CAT评分10分,急性加重发作次数≥2次),D组125例(mMRC评分≥2级,CAT评分≥10分,急性加重发作次数≥2次);同期体检健康者50例为对照组。比较各组一般资料,检测各组血浆及诱导痰中白细胞介素(interleukin,IL)-1β、IL-6、IL-8、肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、高敏C反应蛋白(high-sensitivity C-reactive protein,hs-CRP)水平。结果 COPD组血浆IL-6、IL-8、TNF-α水平均高于对照组(P0.05);D组血浆IL-6[(2.61±1.16)ng/L]、IL-8[(16.56±5.52)ng/L]、hs-CPR[(1 862.26±578.39)mg/L]、TNF-α[(373.39±136.24)nmol/L]水平高于C组[(2.07±0.83)ng/L、(14.06±7.26)ng/L、(1 736.19±548.37)mg/L、(380.01±128.65)nmol/L]、B组[(1.87±0.62)ng/L、(12.13±4.70)ng/L、(1 636.54±449.45)mg/L、(301.17±134.60)nmol/L]和A组[(1.69±0.43)ng/L、(9.09±2.57)ng/L、(1 602.34±390.26)mg/L、(258.14±49.48)nmol/L](P0.05),C组高于B组和A组(P0.05);COPD组诱导痰IL-6、IL-8、hs-CRP、TNF-α和IL-1β水平均高于对照组(P0.05);D组诱导痰IL-6[(289.46±131.25)ng/L]、IL-8[(1 409.29±446.95)ng/L]、hs-CRP[(3 614.89±723.25)mg/L]、TNF-α[(1 212.25±247.37)nmol/L]高于C组[(209.39±131.38)ng/L、(921.72±359.77)ng/L、(3 291.68±630.75)mg/L、(779.77±213.75)nmol/L]、B组[(194.29±77.29)ng/L、(966.63±318.65)ng/L、(3 219.12±762.31)、(1 191.50±362.56)nmol/L]和A组[(147.16±32.68)、(894.78±278.33)、(3 139.95±605.17)、(780.20±396.38)nmol/L](P0.05);A、B、C、D组诱导痰IL-1β水平比较差异均无统计学意义(P0.05)。结论稳定期COPD患者血浆及诱导痰炎性因子水平随mMRC、CAT评分增加相应增高。  相似文献   

10.
目的 :探讨螺内酯对严重心力衰竭 (心衰 )患者血浆脑钠素、心钠素、血管紧张素Ⅱ(angiotensinⅡ ,AngⅡ )、醛固酮水平及左心室功能的影响。方法 :137例严重心衰患者随机分为螺内酯组(70例 ,螺内酯 2 0~ 4 0mg/d)和常规治疗组 (6 7例 )。治疗前和治疗 3、 6个月时分别检测血浆脑钠素、心钠素、AngⅡ、醛固酮水平 ,心脏超声测量左心室功能参数的变化。结果 :①螺内酯组和常规治疗组在治疗 3、 6个月时血浆脑钠素水平 [(5 4 9± 170 )ng/L ,(4 98± 16 5 )ng/L对 (6 11± 174 )ng/L ,(5 79± 16 8)ng/L ;P <0 0 5、P <0 0 1]、心钠素水平 [(190± 2 8)ng/L ,(16 9± 2 6 )ng/L对 (2 0 9± 30 )ng/L ,(184± 2 7)ng/L ,P <0 0 1,P <0 0 1]均较治疗前脑钠素水平 [(6 6 1± 189)ng/L ,(6 75± 183)ng/L]及心钠素水平[(2 2 1± 31)ng/L ,(2 2 0± 30 )ng/L]明显下降 ,前者 2项指标在治疗 3、 6个月时较后者下降更明显 (均为P <0 0 5 ) ;螺内酯组治疗 3、 6个月时血浆AngⅡ [(2 74± 86 )ng/L ,(2 80± 92 )ng/L]、醛固酮水平 [(347± 71)pmol/L ,(345± 71)pmol/L]较治疗前 [(2 6 6± 10 4 )ng/L ,(339± 6 7)pmol/L]无明显下降 ,而常规治疗组治疗 3个月时均明显下降 [(2 36± 80 )ng/L ,(2 93± 5 4 )p  相似文献   

11.
回顾在遗传性心律失常领域最新发表的相关研究,主要关注与儿童心源性猝死关系密切的离子通道病,包括长QT综合征(LQTS)、短QT综合征(SQTS)、Brugada综合征(BrS)和儿茶酚胺敏感性多形性室性心动过速(CPVT),总结它们在发病机制及诊治方面的进展。  相似文献   

12.
Many investigators have stated that the difficulties of imaging with acoustical energy through the skull result from the marked attenuation of the energy by the skull. In the literature measurements of total attenuation have been confused with those for absorption.Measurements made by us show that absorption by compact bone varies between 2–3 dB cm?1 MHz?1 and, in the low megaHertz region appears to be directly proportional to frequency.It has also between shown that the convoluted inner surface of the ivory bone of the inner table of the skull may degrade the collimation and directionality of the beam by refraction.Cancellous bone, such as is present in the dipole of the skull, greatly attenuates the energy. It is postulated that this largely results from scattering. It is also postulated that the energy propagates through cancellous bone as two components, one in the soft tissues and the other partly in the bony spicules. Observations suggest that attenuation due to scattering much more markedly affects the latter of these components and scatters more greatly the higher frequencies in a pulse of broad bandwidth.The energy in each component has varying propagation paths so that the later cycles in the pulse of each component are subject to increasing interference as a result of the variations in propagation times. The two components moreover may have different propagation times so that interference may occur between the pulses of each component as well.All of these phenomena degrade the collimation, coherence, directionality, beam width, pulse length, frequency and other properties of the ultrasonic energy upon which imaging through the skull depends.The interference effects described above are least for the first cycle in the pulse which usually is not the cycle of highest amplitude. Since, in the free field, most of the energy is concentrated around the beam axis, most of the energy in the field which is deflected from its normal propagation path is deflected away from the beam axis. Thus the directionality of the beam is least degraded in the beam axis. The effects of the skull in degrading the properties of the ultrasonic pulse would therefore be lessened if the amplitude of the first cycle of the pulse and the directionality of its energy could be used for imaging.  相似文献   

13.
SUMMARY: Organ transplantation has developed over the past 50 years to reach the sophisticated and integrated clinical service of today through several advances in science. One of the most important of these has been the ability to apply organ preservation protocols to deliver donor organs of high quality, via a network of organ exchange to match the most suitable recipient patient to the best available organ, capable of rapid resumption of life-sustaining function in the recipient patient. This has only been possible by amassing a good understanding of the potential effects of hypoxic injury on donated organs, and how to prevent these by applying organ preservation. This review sets out the history of organ preservation, how applications of hypothermia have become central to the process, and what the current status is for the range of solid organs commonly transplanted. The science of organ preservation is constantly being updated with new knowledge and ideas, and the review also discusses what innovations are coming close to clinical reality to meet the growing demands for high quality organs in transplantation over the next few years.  相似文献   

14.
2017年,国内外学者在呼吸系统疾病的临床和基础领域均进行了深入研究,不仅对相关指南进行了更新,并且针对一些临床热点、难点问题达成专家共识,现就2017年呼吸疾病相关进展作一简单介绍。  相似文献   

15.
16.
目的加强对家族性噬血细胞性淋巴组织细胞增生症(familially hemophagocytic lymphohistiocytosis,FHL)的认识。方法报道确诊为FHL的新病例1例,结合国内外报道的FHL的病例,对该病的临床特点进行汇总分析。结果FHL2常与PRF1基因突变相关,约20%~40%的患者存在穿孔素基因突变。结论对于有阳性家族史,基因诊断明确,应尽早行化疗或者造血干细胞移植。若无家族史,未发现与继发性HLH相关的原发病因,可考虑行基因筛查以明确是否存在FHL的可能。  相似文献   

17.
This narrative review article was conducted to lay out a summarized but exhaustive review of current literature over mucocutaneous manifestations in 4 dimensions of SARS‐CoV‐2 pandemic: virus itself, treatment‐related, vaccine‐induced, and alteration of chronic dermatologic diseases following infection. Virus and vaccine‐related were mainly self‐limited and non‐severe. Treatment‐related reactions could be life‐threatening.  相似文献   

18.
Burkitt's lymphoma(BL) is an aggressive form of nonHodgkin's B-cell lymphoma with three variants namely endemic, sporadic, and immunodeficiency-associated types. It is endemic in Africa and sporadic in other parts of the world. While the endemic form is widely reported to occur in early childhood and commonly involves the jaw bones, the sporadic form typically presents as an abdominal mass. This presentation reports a rare case of sporadic form of BL clinically manifesting as a generalized gingival enlargement in an immunocompetent adult male which demonstrated an aggressive behavior. The patient reported with a prominent anterior gingival swelling of 6 mo duration which slowly enlarged in size and associated with multiple lymph node involvement. Microscopic examination of the lesion using H, E and immunohistochemical diagnosis confirmed the diagnosis as BL. The patient succumbed to the disease before any therapy could be instituted. Since a wide array of causes can be attributed to gingival enlargements, it is necessary to consider malignancies as one of the important differential diagnosis so as to facilitate the need for appropriate diagnosis and prompt treatment.  相似文献   

19.
BackgroundWe aimed to evaluate the effectiveness of different antibody therapies on nasal polyp symptoms in patients treated for severe asthma.MethodsWe performed a retrospective analysis of patients with severe asthma and comorbid CRSwNP who were treated with anti‐IgE, anti‐IL‐5/R or anti‐IL‐4R. CRSwNP symptom burden was evaluated before and after 6 months of therapy.ResultsFifty patients were included hereof treated with anti‐IgE: 9, anti‐IL‐5/R: 26 and anti‐IL‐4R: 15 patients. At baseline median SNOT‐20 was similar among groups (anti‐IgE: 55, anti‐IL‐5/R: 52 and anti‐IL‐4R: 56, p = 0.76), median visual analogue scale (VAS) for nasal symptoms was 4, 7 and 8 (p = 0.14) and VAS for total symptoms was higher in the anti‐IL‐4R group (4, 5 and 8, p = 0.002). After 6 months SNOT‐20 improved significantly in all patient groups with median improvement of anti‐IgE: −8 (p < 0.01), anti‐IL‐5/R: −13 (p < 0.001) and anti‐IL‐4R: −18 (p < 0.001), with larger improvement in the anti‐IL‐4R group than in anti‐IgE (p < 0.001) and anti‐IL‐5/R (p < 0.001) groups. VAS nasal symptoms improved by median anti‐IgE: 0 (n.s.), anti‐IL‐5/R: −1 (p < 0.01) and anti‐IL‐4R: −3 (p < 0.001), VAS total symptoms by anti‐IgE: −1 (n.s.), anti‐IL‐5/R: −2 (p < 0.001) and anti‐IL‐4R: −2 (p < 0.001).ConclusionsTreatment by all antibodies showed effectiveness in reducing symptoms of CRSwNP in patients with severe asthma, with the largest reduction observed in anti‐IL‐4R‐treated patients.  相似文献   

20.
Orf is caused by a parapoxvirus. We present a recurrent, giant digital orf case in a female patient with a history of hairy cell leukemia. In spite of shave excision, the lesion progressed and recurred after digital amputation. Treatment with topical imiquimod cream and systemic subcutaneous interferon alfa‐2a was successful.  相似文献   

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