维生素B12 联合依帕司他对糖尿病周围神经病患者血清SOD及MDA水平的影响

目的:探讨维生素B12联合依帕司他对糖尿病周围神经病患者血清超氧化物歧化酶(SOD)及丙二醛(MDA)水平的影响。方法:收集我院收治的98例2型糖尿病伴周围神经病变患者,随机分为实验组和对照组,每组49例。对照组患者给予依帕司他片50 mg/次,3次/d;实验组患者在对照组基础上给予维生素B12 25~100μg/次,1次/d治疗连续4周。观察并比较两组患者周围神经评分(TCSS评分)、血清SOD、MDA水平以及临床疗效。结果:与治疗前相比,两组患者的TCSS评分、MDA水平均下降血清SOD水平升高,差异具有统计学意义(P0.05);与对照组相比,实验组患者的TCSS评分、丙二醛(MDA)水平较低,血清SOD水平较高差异具有统计学意义(P0.05);与对照组相比,实验组患者的治疗总有效率较高,差异具有统计学意义(P0.05);两组患者均未有明显的不良反应差异无统计学意义(P0.05)。结论:维生素B12联合依帕司他能够改善糖尿病周围神经病患者血清MDA、SOD水平,对临床有指导意义。     

头孢曲松联合雷尼替丁治疗急性胰腺炎患者的临床研究

目的:探讨头孢曲松联合H2受体阻断剂(雷尼替丁)治疗急性胰腺炎患者的临床疗效及可能机制。方法:92例急性胰腺炎患者按抽签法分为对照组(n=46)与实验组(n=46),对照组行头孢曲松治疗,实验组基于对照组加用雷尼替丁治疗,比较两组血清白细胞介素-6(IL-6)、C反应蛋白(CRP)、血小板活化因子(PAF)、超氧化物歧化酶(SOD)、丙二醇(MDA)、胃泌素、胃动素、心率(HR)、平均动脉压(MAP)水平的变化,临床表现缓解时间及临床疗效。结果:治疗后,实验组血清IL-6、CRP、PAF、MDA、胃泌素水平及HR均显著低于对照组(P0.05),血清SOD、胃动素水平及MAP均明显高于对照组(P0.05),临床表现缓解时间明显短于对照组,临床有效率显著高于对照组(P0.05)。结论:头孢曲松联合雷丁替尼可有效提高急性胰腺炎的临床疗效,可能与其抑制炎症反应、抗氧化作用有关。     

板蓝根联合阿奇霉素对小儿支原体肺炎血清炎症因子影响

目的:探究板蓝根联合阿奇霉素对小儿支原体肺炎患者血清中TNF-α、IL-6、IL-8和IL-10浓度的影响。方法:选择2014年1月-2014年12月在我院接受治疗的患儿80例,均确诊为支原体肺炎,按随机数字表分为实验组和对照组。对照组给予阿奇霉素粉针剂与阿奇霉素治疗。实验组在对照组基础上给予板蓝根提取液治疗。观察并比较两组治疗前后外周血TNF-α,IL-6,IL-8及IL-10水平的变化情况及疗效与不良反应发生率。结果:实验组的临床治疗的总有效率较高(P0.05);治疗后两组促炎因子TNF-α、IL-6、IL-8水平均明显下降(P0.05),与对照组相比,实验组TNF-α、IL-6、IL-8水平较低(P0.05);治疗后两组患儿血清抗炎因子IL-10水平均下降(P0.05),与对照组相比,实验组IL-10较低(P0.05);与对照组相比,实验组不良反应发生率较低(P0.05)。结论:板蓝根联合阿奇霉素能够明显降低小儿支原体肺炎患者血清中TNF-α、IL-6、IL-8和IL-10的浓度,提高治疗效果,对临床有指导意义。     

荷丹片联合依达拉奉治疗急性脑梗死的临床效果及对血清IFN-γ，Ang-2，Hcy水平的影响

目的:探讨荷丹片联合依达拉奉治疗急性脑梗死的临床效果及其对血清干扰素-γ(IFN-γ)、促血管生成素Ⅱ(Ang-2)、同型半胱氨酸(Hcy)水平的影响。方法:将102例急性脑梗死患者按抽签法分作对照组与实验组,每组各51例。对照组采用依达拉奉治疗,静脉滴注30mg依达拉奉,早晚各1次;实验组基于对照组加用荷丹片治疗,口服14.6 g荷丹片,早中晚各1次。比较两组疗效、治疗前后神经功能缺损评分(NIHSS)、血清IFN-γ、Ang-2、Hcy、丙二醇(MDA)、超氧化物歧化醇(SOD)、白细胞介素-6、10(IL-6、IL-10)、肿瘤坏死因子-α(TNF-α)水平及不良反应的发生情况。结果:实验组总有效率、血清Ang-2、SOD、IL-10水平均显著高于对照组,NIHSS、血清IFN-γ、Hcy、MDA、IL-6、TNF-α水平均明显低于对照组,差异均有统计学意义(P0.05)。两组不良反应的发生率比较差异无统计学意义(P0.05)。结论:荷丹片联合依达拉奉用于急性脑梗死的疗效肯定,可调节血清IFN-γ、Ang-2、Hcy的表达,对氧化应激及炎症反应均有改善作用。     

加兰他敏联合复方海蛇胶囊治疗阿尔茨海默病早发型痴呆的临床疗效及对血清IL-6、IL-8、TNF-α水平的影响

目的:观察加兰他敏联合复方海蛇胶囊治疗阿尔茨海默病早发型痴呆的临床效果及对血清白细胞介素-6、8(IL-6、IL-8)和肿瘤坏死因子-α(TNF-α)水平的影响。方法:选择我院2014年9月～2016年9月收治的96例阿尔茨海默病早发型痴呆患者,按照治疗方式分为对照组和实验组,每组48例。对照组予以加兰他敏治疗,实验组在对照组基础上加用复方海蛇胶囊治疗,观察和比较两组的临床疗效,治疗前后血清IL-6、IL-8、TNF-α、游离三碘甲状腺原氨酸(FT3)、游离甲状腺素(FT4)、简易智力状态评分(MMSE)、老年痴呆患者生活质量量表(QOL-AD)的变化以及不良反应的发生情况。结果:治疗后,实验组有效率显著高于对照组[93.75%vs 77.08%](P0.05)。治疗前,两组血清IL-6、IL-8、TNF-α、FT3、FT4、MMSE、QOL-AD比较差异无统计学意义(P0.05);治疗后,两组血清IL-6、IL-8、TNF-α水平均较治疗前显著降低,且实验组低于对照组(P0.05);两组FT3、FT4、MMSE、QOL-AD均较治疗前明显上升,且实验组显著高于对照组(P0.05)。两组不良反应的发生情况比较差异无统计学意义(P0.05)。结论:加兰他敏联合复方海蛇胶囊治疗阿尔茨海默病早发型痴呆的临床效果优于加兰他敏单药治疗,其能够降低患者血清IL-6、IL-8及TNF-α浓度,并能提高血清甲状腺激素的水平。     

舒血宁注射液联合布地耐德对COPD急性加重期患者血清MMP-9，IL-6，IL-8，TNF-α及肺功能的影响

目的:探讨舒血宁注射液联合布地耐德对慢性阻塞性肺病(COPD)急性加重期患者血清基质金属蛋白酶-9(MMP-9)、白细胞介素-6(IL-6)、白细胞介素-8(IL-8)、肿瘤坏死因子-α(TNF-α)及肺功能的影响。方法:将112例COPD急性加重期患者参照随机数表法分作对照组与观察组,每组各56例。对照组采用布地奈德治疗,观察组基于对照组加以舒血宁注射液治疗。比较两组总有效率,治疗前后血清MMP-9、IL-6、IL-8、TNF-α、丙二醛(MDA)、超氧化物歧化醇(SOD)水平、二氧化碳分压(Pa CO_2)、血氧分压(Pa O_2),气峰流速(PEF)、最大呼气中期流速(MMEF)、用力肺活量(FVC)、CD3~+、CD4~+、CD8~+、CD4~+/CD8~+及不良反应的发生情况。结果:观察组总有效率显著高于对照组94.64%vs 80.35%(P0.05)。观察组治疗后血清MMP-9、IL-6、IL-8、TNF-α、MDA水平、PaCO_2、CD8~+均明显低于对照组(P0.05),血清SOD水平、PaO_2、PEF、MMEF、FVC、CD3~+、CD4~+、CD4~+/CD8~+均明显高于对照组(P0.05)。两组不良反应的发生情况比较差异无统计学意义(P0.05)。结论:舒血宁注射液联合布地奈德治疗COPD急性加重期患者的疗效确切,可降低血清MMP-9、IL-6、IL-8、TNF-α水平,改善肺功能,减轻氧化应激并改善动脉血气及免疫功能。     

尼美舒利联合甲硝唑对牙周炎患者血清IL-10、TNF-α和MMP-8水平的影响

目的:研究尼美舒利联合甲硝唑对牙周炎患者血清白细胞介素-10(IL-10)、肿瘤坏死因子(TNF-α)、基质金属蛋白酶-8(MMP-8)水平的影响。方法:收集2014年3月至2015年3月我院收治的90例牙周炎患者,按照抽签法分为实验组和对照组,每组各45例。两组均采用牙结石以及牙菌斑除去、根面平整、冲洗牙周袋等常规治疗。对照组在此基础上采用甲硝唑治疗,0.9%生理盐水进行冲洗。实验组在对照组基础上采用尼美舒利治疗,每次2片,每天2次。观察和比较两组的治疗疗效,牙周情况,治疗前后血清IL-10、TNF-α、MMP-8水平的变化及不良反应的发生情况。结果:治疗后,实验组总有效率显著高于对照组(P0.05);GI、PD、PLI、AL显著低于对照组(P0.05);血清IL-10水平显著高于对照组(P0.05),血清TNF-α、MMP-8水平显著低于对照组(P0.05);两组不良反应总发生率比较差异无统计学意义(P0.05)。结论:尼美舒利联合甲硝唑治疗牙周炎可显著提高其临床疗效,消除或缓解临床症状,可能与其提高血清IL-10水平,降低TNF-α、MMP-8水平,抑制炎症反应,保持牙内环境稳定有关。     

健胃消痞汤联合雷贝拉唑治疗慢性萎缩性胃炎的临床疗效及对血清G-17、ET-1、胃蛋白酶原、EGF及NO水平的影响

目的:探讨健胃消痞汤联合雷贝拉唑治疗慢性萎缩性胃炎(chronic atrophic gastritis,CAG)的临床疗效及对血清胃泌素-17(G-17)、内皮素-1(endothelin-1,ET-1)、胃蛋白酶原、表皮生长因子(EGF)及一氧化氮(NO)水平的影响。方法:选择2015年6月到2017年3月我院收治的100例CAG患者,随机分为对照组和治疗组,每组各50例。对照组患者给予雷贝拉唑治疗,治疗组患者在对照组治疗的基础上联合健胃消痞汤治疗,两组患者均治疗8周。评价并比较两组患者的临床疗效、治疗前后血清G-17、ET-1、胃蛋白酶原I(PG I)、胃蛋白酶原II(PG II)、EGF及NO水平的变化及治疗期间不良反应的发生情况。结果:治疗后,治疗组患者的总有效率为94.00%,明显高于对照组(78.00%)(P=0.021);两组患者血清G-17、PG I、PG II及NO水平均较治疗前明显升高,血清ET-1和EGF水平均明显下降,且治疗组以上指标的改善情况均显著优于对照组(P0.05)。两组患者治疗期间不良反应的发生率比较差异无统计学意义(P=0.461)。结论:健胃消痞汤联合雷贝拉唑治疗CAG的临床疗效显著,且安全性较高,可能与其明显改善患者血清G-17、ET-1、PG I、PG II、EGF及NO水平有关。     

大承气汤辅助治疗ARDS患者对其pH、PaO2/FiO2和氧化应激状态的影响

目的:观察大承气汤辅助治疗ARDS患者对其pH、氧合指数(PaO_2/FiO_2)及氧化应激状态的影响。方法:选择2014年8月~2016年8月于成都中医药大学临床医学院就诊的82例ARDS患者,按治疗方式的不同随机分为对照组与实验组,对照组接受常规治疗,实验组在对照组的基础上联合大承气汤治疗,两组均持续用药7天。观察两组ICU住院时间、机械通气时间、不良反应的发生情况、治疗前后pH、PaO_2/FiO_2、血气超氧化物歧化醇(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、丙二醇(MDA)水平的变化。结果:实验组ICU住院时间、机械通气时间及不良反应的发生率均显著短于或低于对照组(P0.05)。治疗前,两组pH、PaO_2/FiO_2、血清SOD、GSH-Px、MDA水平比较差异无统计学意义(P0.05);治疗后,两组pH、PaO_2/FiO_2、血清SOD、GSH-Px水平均较治疗前显著上升,且实验组PaO_2/FiO_2、血清SOD、GSH-Px水平明显高于对照组,两组血清MDA水平均较治疗前明显降低,且实验组血清MDA水平显著低于对照组(P0.05)。结论:大承气汤辅助治疗ARDS能够有效改善患者pH、PaO_2/FiO_2,缓解氧化应激状态,利于患者恢复。     

复方黄柏液联合派瑞松治疗脂溢性皮炎的临床研究

目的:探讨复方黄柏液联合派瑞松治疗脂溢性皮炎的临床疗效及其对患者血清白细胞介素-8(IL-8)、白细胞介素-2(IL-2)及白细胞介素-10(IL-10)水平的影响。方法:选择于我院就诊的脂溢性皮炎患者120例,随机分为实验组和对照组,每组各60例。对照组患者采用派瑞松进行治疗,实验组患者采用复方黄柏液联合派瑞松进行治疗。比较治疗前后两组患者血清白细胞介素-2(IL-2)、白细胞介素-8(IL-8)、白细胞介素-10(IL-10)水平,并比较治疗后脂溢性皮炎复发率、复发间隔天数及临床治疗效果。结果:治疗后,与对照组相比,实验组患者血清IL-10水平及复发率明显较低(P0.05);血清IL-2、IL-8水平及临床总有效率较高(P0.05);痊愈至复发的间隔时间较长(P0.05)。结论:复方黄柏液联合派瑞松能够明显提高脂溢性皮炎的临床治疗效果,降低临床复发率,可能与缓解机体的炎症反应有关。     

A Unique Protease Cleavage Site Predicted in the Spike Protein of the Novel Pneumonia Coronavirus (2019-nCoV) Potentially Related to Viral Transmissibility

正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases     

Curcuminoids as inhibitors of thioredoxin reductase: A receptor based pharmacophore study with distance mapping of the active site

Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable potent antiproliferative synthetic drugs.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.     

Comparative morphology of the carpel in the Liliaceae: Hewardieae, Petrosavieae, and Tricyrteae

The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细