Protective Roles of α-lipoic Acid in Rat Model of Mitochondrial DNA4834bp Deletion in Inner Ear

The protective roles of α-lipoic acid in the rat model of mitochondrial DNA (mtDNA) 4834bp deletion in inner ear were investigated. Forty female Wistar rats at 4 weeks of age were divided into four groups: group A (D-galactose group, n=10), group B (D-galactose+α-lipoic acid group, n=10), group C (α-lipoic acid group, n=10), and group D (control group, n=10). Auditory brainstem response (ABR) was used to detect the hearing threshold. Colorimetry was used to analyze activity of superoxide dismutase (SOD) and concentration of malondialdehyde (MDA). The percentage of mtDNA4834bp deletion in inner ear was identified by real-time PCR. There was no significant difference in ABR threshold shift among all groups. The percentage of mtDNA4834bp deletion in group A was higher than that in other groups, but there was no significant difference in percentage of mtDNA4834bp deletion among groups B, C, and D. The activity of SOD in group A was lower than that in other groups. The concentration of MDA in group A was higher than that in other groups. It was concluded that there was no significant hearing loss when the percentage of mtDNA4834bp deletion was lower than 12.5%. α-Lipoic acid could prevent the reactive oxygen species (ROS)-induced mtDNA4834bp deletion in inner ear of rats.

Protective Effects of α-Lipoic Acid on Vascular Oxidative Stress in Rats with Hyperuricemia

The aim of the present study was to observe the protective effects of α-lipoic acid(ALA)on vascular injury in rats with hyperuricemia(HUA).The ALA treatment groups(10,30 and 90 mg/kg,respectively)were administered with ALA via gavage for 2 weeks.Subsequently,the levels of blood urea nitrogen(BUN),creatinine(CREA),uric acid(UA),total cholesterol(TC),high density lipoprotein-C(HDL-C)and low density lipoprotein-C(LDL-C)were measured;the activities of glutathione peroxidase(GSH-Px),catalase(CAT),malonaldehyde(MDA),superoxide dismutase(SOD)and xanthine oxidase(XOD)were also determined.The thoracic aorta of rats in each experimental group was observed under a light microscope;ultrastructural analysis was performed.SOD and CAT protein contents were investigated by Western blotting.The results revealed that:i)Compared with the model group,the levels of UA were decreased in the ALA groups and the levels of BUN,CREA,TC,and LDL-C decreased in the 30 and 90 mg/kg ALA groups(P<0.05);ii)compared with the model group,the activities of GSH-Px,SOD and XOD were increased and the levels of MDA were reduced in the 90 mg/kg ALA group (P<0.05);and iii)in the model and 10 mg/kg ALA groups,edema and shedding were observed in endothelial cells.Compared with the model and 10 mg/kg ALA groups,the 30 and 90 mg/kg ALA groups exhibited fewer swollen endothelial cells.In summary,the results of the present study indicated that HUA resulted in vascular oxidative stress injury and decreased the activity of antioxidative enzymes,which leads to endothelial cell damage and vascular lesions.ALA may serve as a therapeutic agent for the treatment of HUA-induced endothelial dysfunction.

Influence ofα-Lipoic acid adjuvant therapy on sugar metabolism,peripheral nerve conduction velocity and oxidative stress in patients with diabetic peripheral neuropathy

Objective: To explore the influence of α-Lipoic acid adjuvant therapy on glucose metabolism, peripheral nerve conduction velocity and oxidative stress in patients with diabetic peripheral neuropathy. Methods: A total of 92 cases of patients with diabetic peripheral neuropathy were divided into observation group and control group according to the odd and even admission number, 46 cases in each group. All patients were given the conventional treatment, on this basis, patients in control group were given orally Pancreatic Kinionoge, patients in observation group were given α-Lipoic acid intravenous injection. They were treated for 14 d. The following indicators were observed in two groups before and after treatment: glucose metabolic index: fasting blood glucose (FBG), 2 h postprandial blood glucose (2hPBG) and glycosylated hemoglobin (HbA1c);peripheral nerve conduction velocity, median nerve, sensory nerve conduction velocity of nervus peroneus communis (MCV) and motor nerve conduction velocity (SCV), ankle arm index (ABI) and inner diameter of lower limb artery (femoral artery, dorsalis pedis artery, popliteal artery), oxidative stress indicators: superoxide dismutase (SOD) and malondialdehyde (MDA). Results: Compared with before treatment, the FBG, 2hPBG, HbA1c level in two groups after treatment were significantly reduced, but the difference of intergroup after treatment was no statistical significance;MCV and SCV of median nerve and nervus peroneus communis was increased significantly than control group after treatment, moreover MCV and SCV of median nerve and nervus peroneus communis in observation group were higher than control group after treatment, the difference was significant. After treatment, ABI and femoral artery, dorsalis pedis arteries, popliteal artery inner diameter in two groups were increased significantly, moreover after treatment the above level in observation group was obviously higher than control group, there was significant difference. After treatment, the MDA in observation group were reduced significantly and SOD level increased significantly, difference was statistically significant compared with before treatment and control group after the treatment;The difference in control group compared between before treatment and after treatment had no statistical significance. Conclusion: Diabetic peripheral neuropathy treated adjuvantly by α-Lipoic acid can significantly improve lower limb blood supply, improve the peripheral nerve conduction velocity, reduce level of oxidative stress, the effect on glucose metabolism still need long course of observation.

Efficacy evaluation of high-frequency ultrasound in the treatment of diabetic peripheral neuropathy with α-lipoic acid combined with traditional Chinese medicine package treatment

Objective:To use high-frequency ultrasound to evaluate the efficacy ofα-lipoic acid combined with traditional Chinese medicine in the treatment of diabetic peripheral neuropathy(DPN),so as to provide a basis for clinical medication and evaluation of therapeutic effect.Methods:From December 2018 to December 2019,110 patients with DPN who met the inclusion and exclusion criteria were divided into observation group and control group according to different treatment plans.The control group was treated withα-lipoic acid,and the observation group was treated withα-lipoic acid combined with traditional Chinese medicine encapsulation treatment,and used high-frequency ultrasound,nerve conduction velocity and serological examination to comprehensively evaluate the effectiveness of the two treatment methods.Results:The mean amplitude of glycemic excursions(MAGE)value of the observation group and the control group after treatment was significantly lower than before treatment(P<0.05);After treatment,the SCV of the ulnar nerve,median nerve,and common peroneal nerve in the two groups was significantly faster than before treatment(P<0.05).Similar to SCV,the MCV of the three nerves measured after treatment in the two groups was significantly faster than before treatment(P<0.05).Compared between the groups after treatment,the three kinds of nerve SCV and MCV in the observation group were significantly faster than those in the control group(P<0.05).The cross-sectional area(CSA)value of the ulnar nerve,median nerve and common peroneal nerve in the observation group after treatment was significantly lower than before treatment(P<0.05).Compared with the control group after treatment,the three nerves CSA in the observation group was significantly lower than that in the control group(P<0.05).Abnormal ultrasound performance:The proportion of abnormal ultrasound performances of the ulnar nerve,median nerve,and common peroneal nerve in the observation group after treatment was significantly lower than before treatment(P<0.05).The composition ratio of internal echo reduction and ambiguity in the observation group after three nerve treatments was significantly lower than that in the control group after treatment(P<0.05).In the correlation analysis,the three kinds of nerve CSA before and after treatment were negatively correlated with SCV and amplitude(P<0.05),and positively correlated with latency(P<0.05).Conclusion:The combination ofα-lipoic acid and Chinese medicine encapsulation technology has a good effect on the treatment and repair of DPN nerve damage,and can be routinely applied in clinical treatment.High-frequency ultrasound can intuitively observe changes in peripheral nerves and can be used to evaluate the prognosis of DPN.

Effects of dietary CoQ₁₀and α-lipoic acid on CoQ₁₀levels in plasma and tissues of eggs laying hens

In this paper we described the effect of administrated CoQ10, and alfa-lipoic acid on the concentration of total CoQ10 inplasma end body tissues of eggs laying hens. Organisms raise a complex network of enzymes, metabolites and molecules with antioxidant activities in order to prevent oxidative damage of theirs bodies. Adequate blood concentrations of small weight molecules ingested with food and food additives are important for the proper functioning of the antioxidant defense. To test this hypothesis we prepared following experiment. Forty weeks old hens were selected from two genotypes;Ross 308 broiler mothers and Lohmann breed hens. Animals were fed for a period of 84 days. Concentrations of supplemented CoQ10 and ALAwere calculated from feed instruction tables so each hen received an average of approximately 5 mg of CoQ10 and 50 mg ofALAper kg of animal weight per day. During the experiment blood samples were taken and at the end of the experiment different body tissues (heart, liver, breast, legs) were collected and analyzed with originally developed HPLC-MS/MS method based selective ionization with LiCl on MRM scanning. We found a number of interesting and unexpected results. Supplemented CoQ10 increased concentrations of coenzyme CoQ10 inplasma and different hen’s tissues. Increased concentration of CoQ10 is the result of its transfer with chylomicrons from the digestive tract to various organs of the body and to the liver where exogenous and endogenous CoQ10 has been re-redistributed through lipoproteins. Supplemented ALA caused much greater concentration of CoQ10 indifferent tissues and plasma then CoQ10. Plausible explanation of our results is such that ALA may regenerates the antioxidants and accelerate the formation of endogenous CoQ10 which is distributed with lipoprotein carriers and increases overall concentration of CoQ10. Our experiments definitely show that Lipoic acid beside glutathione promotes also a synthesis of CoQ10 and increases the total concentration especially in liver and heart tissues.

Effects of α-lipoic acid on oxidative stress, vascular endothelium function and renal function in patients with diabetic nephropathy

Objective:To investigate the effects ofα-lipoic acid on oxidative stress, vascular endothelium function and renal function in diabetic nephropathy patients.Methods: According to random data table method, a total of 80 patients with diabetic nephropathy from September 2016 to August 2017 were divided into observation group and control group (n=40). The patients of control group were treated with routine therapy while the patients of observation group were given intravenous infusion ofα-lipoic acid on the basis of conventional therapy. The levels of oxidative stress, vascular endothelium function and renal function changes were compared between the two groups before and after the treatment.Results:The levels of SOD, MDA, NO, ET-1, RBP and CysC in the two groups before treatment were not statistically significant. Compared with the levels before treatment, the level of SOD in the observation group was significantly increased and the level of MDA was significantly decreased;the level of SOD in the observation group was significantly higher than that in the control group, and the level of MDA was significantly lower than that of the control group;the above differences were statistically significant. The levels of SOD and MDA had no significant changes in the control group before and after treatment. After treatment, the levels of ET-1, RBP and CysC in the two groups were significantly lower than those in the same group before treatment, and the observation group levels were significantly lower than those in the control group;the levels of NO in the two groups after treatment were significantly higher than those in the same group before treatment, and the observation group was significantly higher than that of the control group;the above differences were statistically significant.Conclusions: On the basis of conventional treatment, combining withα-lipoic acid can better reduce the level of oxidative stress, improve vascular endothelial function, renal function in patients with diabetic nephropathy, which has an important clinical value.

Effect of α-lipoic acid combined with nerve growth factor on bone metabolism, oxidative stress and nerve conduction function after femoral fracture surgery

Objective: To discuss the effect of α-lipoic acid combined with nerve growth factor on bone metabolism, oxidative stress and nerve conduction function after femoral fracture surgery. Methods: A total of 110 patients with femoral fracture who received surgical treatment in the hospital between January 2015 and January 2017 were collected and divided into the control group (n=55) and study group (n=55) by random number table. Control group received postoperative nerve growth factor therapy, and study group received postoperative α-lipoic acid combined with nerve growth factor therapy. The differences in the contents of bone metabolism and oxidative stress indexes as well as the levels of nerve conduction function indexes were compared between the two groups before and after treatment. Results: Before treatment, the differences in the contents of bone metabolism and oxidative stress indexes as well as the levels of nerve conduction function indexes were not statistically significant between the two groups. After treatment, serum bone metabolism indexes BGP and PⅠNP contents of study group were higher than those of control group while CTX-Ⅰ and TRAP contents were lower than those of control group;serum oxidative stress indexes TAC, CAT and SOD contents of study group were higher than those of control group while MDA content was lower than that of control group;limb nerve conduction velocity SCV and MCV levels of study group were higher than those of control group. Conclusion: α-lipoic acid combined with nerve growth factor therapy after femoral fracture surgery can effectively balance osteoblast/osteoclast activity, reduce oxidative stress and improve limb nerve conduction velocity.

高效液相色谱法测定α-硫辛酸绿茶片中α-硫辛酸的含量

目的 建立α-硫辛酸绿茶片中α-硫辛酸的含量测定方法。方法 利用高效液相色谱(HPLC)技术,采用Alltima C_(18)柱(250 mm×4.6 mm,5μm),流动相为乙腈-0.1%磷酸溶液(55∶45),流速为1.0 mL·min^(-1),检测波长为215 nm,柱温为30℃。结果 α-硫辛酸在102.6~307.7μg·mL^(-1)与峰面积呈良好的线性关系,相关系数(r)为1.000;精密度、重复性和稳定性考察RSD均小于2.0%;3个浓度的加样回收率为98.44%~100.2%,RSD值均小于1.0%。结论 该方法准确、简单、快速,能够用于α-硫辛酸绿茶片中α-硫辛酸的含量测定。

α-硫辛酸在微囊藻毒素-LR诱导草鱼卵巢细胞损伤中的作用

为研究α-硫辛酸(Alpha lipoic acid,α-LA)在微囊藻毒素-LR(Microcystin-LR,MC-LR)诱导水生动物毒性效应中的保护作用,本研究以草鱼卵巢(Grass carp ovary,GCO)细胞为研究对象,检测分析了不同浓度α-LA以及α-LA与MC-LR共同暴露对GCO细胞活力的影响,随后根据测定的结果设置对照组(不添加MC-LR和α-LA)、125μmol·L^(-1)α-LA组、24μmol·L^(-1)MC-LR组及125μmol·L^(-1)α-LA+24μmol·L^(-1)MC-LR组,检测分析了α-LA在缓解MC-LR对GCO细胞活性、氧化应激以及炎症方面的影响。结果表明:与对照组相比,24μmol·L^(-1)MC-LR可诱导乳酸脱氢酶(LDH)活性和丙二醛(MDA)含量显著上升,同时显著抑制谷胱甘肽(GSH)活性(P<0.05),当MC-LR处理组中加入125μmol·L^(-1)α-LA后,与MC-LR单独暴露组相比,LDH活性和MDA含量均显著下降(P<0.05),但GSH活性却显著上升(P<0.05)。对氧化相关基因分析发现,与对照组相比,24μmol·L^(-1)MC-LR可显著降低SOD1、CAT和GST基因的表达量(P<0.05),当125μmol·L^(-1)α-LA与24μmol·L^(-1)MC-LR共同作用于GCO细胞后,与MC-LR单独暴露组相比,联合暴露组的GST基因的表达量显著上升(P<0.05),但SOD1和CAT两个基因的表达变化不显著(P>0.05)。此外,对炎症因子进行分析发现,MC-LR单独暴露组TNFα和IL11基因的相对表达水平显著高于对照组(P<0.05),但联合暴露组中的TNFα和IL11基因的相对表达水平却显著低于MC-LR单独暴露组(P<0.05)。研究结果表明,α-LA可缓解MC-LR诱导的氧化应激,提高细胞活力,抑制GCO细胞炎症的发生,从而减弱MC-LR对GCO细胞的损伤。

α-硫辛酸联合前列地尔治疗对糖尿病足患者微血管生成、氧化应激及创面愈合的影响

目的 探究α-硫辛酸联合前列地尔治疗对糖尿病足(DF)患者微血管生成、氧化应激及创面愈合的影响。方法 采用随机数字表法将98例DF患者分为联合组(49例)和对照组(49例)。对照组接受前列地尔治疗,联合组接受α-硫辛酸联合前列地尔治疗。比较两组患者临床疗效、创面微血管生成情况、氧化应激反应及创面愈合情况。结果 联合组临床总有效率95.91%显著高于对照组的81.63%(P<0.05)。治疗1个月后,两组血管内皮生长因子(VEGF)水平显著高于治疗前、内皮抑素(ES)水平显著低于治疗前,联合组VEGF(135.28±13.58)ng/L显著高于对照组的(103.29±12.39)ng/L、ES(41.06±4.59)ng/ml显著低于对照组的(49.68±5.12)ng/ml(P<0.05)。治疗1个月后,两组超氧化物歧化酶(SOD)水平显著高于治疗前、丙二醛(MDA)水平显著低于治疗前,联合组SOD(92.77±10.25)U/ml显著高于对照组的(86.29±9.21)U/ml、MDA(2.29±0.94)μmol/L显著低于对照组的(2.97±1.06)μmol/L(P<0.05)。联合组创面愈合时间(16.28±3.12)d显著短于对照组的(21.58±4.05)d,创面愈合率(76.29±10.39)%显著高于对照组的(54.95±11.28)%(P<0.05);治疗1个月后,两组创周肿势评分均低于本组治疗前,联合组创周肿势评分(0.93±0.34)分显著低于对照组的(1.17±0.41)分(P<0.05)。结论 α-硫辛酸联合前列地尔治疗DF患者较前列地尔单药治疗的临床效果更显著,促进微血管生成,改善氧化应激反应,促进创面愈合。

α-Lipoic Acid Exerts Its Antiviral Effect against Viral Hemorrhagic Septicemia Virus(VHSV) by Promoting Upregulation of Antiviral Genes and Suppressing VHSV-Induced Oxidative Stress

Viral hemorrhagic septicemia virus(VHSV), belonging to the genus Novirhabdovirus, Rhabdoviridae family, is a causative agent of high mortality in fish and has caused significant losses to the aquaculture industry. Currently, no effective vaccines, Food and Drug Administration-approved inhibitors, or other therapeutic intervention options are available against VHSV. α-Lipoic Acid(LA), a potent antioxidant, has been proposed to have antiviral effects against different viruses. In this study, LA(CC_(50)= 472.6 lmol/L) was repurposed to exhibit antiviral activity against VHSV. In fathead minnow cells,LA significantly increased the cell viability post-VHSV infection(EC_(50)= 42.7 lmol/L), and exerted a dose-dependent inhibitory effect on VHSV induced-plaque, cytopathic effects, and VHSV glycoprotein expression. The time-of-addition assay suggested that the antiviral activity of LA occurred at viral replication stage. Survival assay revealed that LA could significantly upregulated the survival rate of VHSV-infected largemouth bass in both co-injection(38.095% vs. 1.887%,P < 0.01) and post-injection manner(38.813% vs. 8.696%, P < 0.01) compared with the control group. Additional comparative transcriptome and q RT-PCR analysis revealed LA treatment upregulated the expression of several antiviral genes, such as IRF7, Viperin, and ISG15. Moreover, LA treatment reduced VHSV-induced reactive oxygen species production in addition to Nrf2 and SOD1 expression. Taken together, these data demonstrated that LA suppressed VHSV replication by inducing antiviral genes expression and reducing VHSV-induced oxidative stress. These results suggest a new direction in the development of potential antiviral candidate drugs against VHSV infection.

木丹颗粒联合α-硫辛酸与甲钴胺治疗糖尿病周围神经病变疗效及对血清同型半胱氨酸、神经传导速度影响研究

目的 探讨对糖尿病周围神经病变(diabetic peripheral neuropathy,DPN)患者采用木丹颗粒联合α-硫辛酸、甲钴胺治疗的临床效果。方法 选取2019年1月—2020年10月在该院治疗的96例DPN患者为研究对象,采用随机数字表法将其分为对照组和研究组,每组48例。两组患者均给予甲钴胺和α-硫辛酸治疗,研究组在此基础上联合木丹颗粒进行治疗,观察并比较两组患者治疗前后左腓神经、左腓总神经、右腓神经和右腓总神经传导速度,多伦多临床评分系统(TCSS)评分,血清同型半胱氨酸(Hcy)和氧化应激指标[超敏C反应蛋白(hs-CRP)、血清超氧化物歧化酶(SOD)]水平,血液流变学指标水平;两组患者治疗后治疗效果及不良反应发生率。结果 (1)治疗前,两组患者神经传导速度比较差异无统计学意义(P>0.05);治疗后,两组患者神经传导速度较本组治疗前均提高(P<0.05),且研究组各项神经传导速度均快于对照组(P<0.05)。(2)治疗前,两组患者神经症状、感觉功能和神经反射三方面TCSS评分比较差异无统计学意义(P>0.05);治疗后两组患者三方面TCSS评分较本组治疗前均降低(P<0.05),且研究组三方面TCSS评分均低于对照组(P<0.05)。(3)治疗后,研究组治疗总有效率(93.75%)高于对照组(77.08%),差异有统计学意义(P<0.05)。(4)治疗前,两组患者血清Hcy、hs-CRP和SOD水平比较差异无统计学意义(P>0.05);治疗后,两组患者Hcy和hs-CRP水平较本组治疗前均降低(P<0.05),SOD水平较本组治疗前均升高(P<0.05),且研究组与对照组比较差异有统计学意义(P<0.05)。(5)治疗前,两组患者血浆黏度、红细胞体积、纤维蛋白原、全血低切黏度和全血高切黏度5项血液流变学指标水平比较差异无统计学意义(P>0.05);治疗后,两组患者5项血液流变学指标水平较本组治疗前均降低(P<0.05),且研究组水平均低于对照组(P<0.05)。(6)研究组不良反应发生率(22.92%)与对照组(18.75%)比较差异无统计学意义(P>0.05)。结论 α-硫辛酸、甲钴胺和木丹颗粒3种药物联合治疗DPN可以有效改善神经感知异常症状,提高神经传导速度,降低Hcy水平,提高临床治疗效果并保障患者治疗的安全性,联合用药临床价值较高。

依达拉奉联合α-硫辛酸对糖尿病周围神经病变患者临床症状与神经传导功能的影响

目的 探讨依达拉奉联合α-硫辛酸对糖尿病周围神经病变患者临床症状与神经传导功能的影响。方法 将2021年1月至2022年12月我院收治的150例糖尿病周围神经病变患者随机分为两组各75例。对照组采用α-硫辛酸治疗,观察组采用依达拉奉联合α-硫辛酸治疗。比较两组的临床症状评分、神经传导速度以及药物相关不良反应发生率。结果 治疗后,观察组灼烧感、刺痛、麻木、感觉减退等临床症状评分低于对照组,胫神经、尺神经、腓总神经传导速度高于对照组(P <0.05)。两组的不良反应发生率(4.0%vs. 5.3%)比较无统计学差异(P>0.05)。结论 依达拉奉联合α-硫辛酸治疗糖尿病周围神经病变的临床效果显著,可有效改善临床症状及神经传导速度,且安全性良好。

低分子肝素钙联合α-硫辛酸对糖尿病足的疗效

目的探讨低分子肝素钙联合α-硫辛酸对糖尿病足的疗效及作用机制。方法回顾性分析2019年1月—2022年12月在我院接受治疗的糖尿病足患者89例,按照治疗方式的不同分为观察组(44例)和对照组(45例)。两组患者在常规治疗的基础上,对照组采用α-硫辛酸治疗,观察组采用低分子肝素钙联合α-硫辛酸联合治疗,比较两组患者治疗前后的经皮氧分压(TcPO_(2))值、足背动脉血流速度和半径、血清指标变化、治疗后的溃疡面积、创面肉芽情况、临床疗效及不良反应情况。结果治疗后,两组患者的TcPO_(2)值均较治疗前降低,且观察组显著低于对照组(P<0.05)。治疗前,两组足背动脉血流速度和足背动脉内径差异无统计学意义(P>0.05),治疗后,观察组与对照组相比增高明显(P<0.05)。治疗前,两组血清IL-6、基质金属蛋白(MMP)-2及MMP-9差异无统计学意义(P>0.05),治疗后,观察组血清Il-6、MMP-2、MMP-9水平均低于对照组(P<0.05)。治疗后,观察组溃疡面积、创面肉芽改善优于对照组(P<0.05);观察组的临床治疗总有效率高于对照组(P<0.05);观察组的不良反应发生率与对照组对比差异无统计学意义(P>0.05)。结论给予糖尿病足患者低分子肝素钙与α-硫辛酸联合干预,有利于改善患者肢端局部缺血,增加足部血液循环,促进创面愈合,提高临床治疗效果,且不良反应较少,可供临床借鉴。

糖尿病周围神经病变患者通过联用α-硫辛酸及甲钴胺的治疗价值分析

目的评估联用α-硫辛酸及甲钴胺对于糖尿病周围神经病变治疗的价值。方法选取2021年1月—2023年9月江苏省江阴市人民医院收治的198例糖尿病周围神经病变患者为研究对象,根据掷骰子分为单药组和联合组,每组99例。前者采用甲钴胺治疗,后者采用α-硫辛酸及甲钴胺联用治疗,比较两组疗效、氧化应激指标与炎症因子指标、神经传导速度及不良反应发生率。结果联合组治疗总有效率高于单药组,差异有统计学意义(P<0.05);联合组治疗后超氧化物歧化酶高于单药组,丙二醛、超敏C反应蛋白低于单药组,差异有统计学意义(P<0.05);联合组治疗后腓神经、尺神经、正中神经高于单药组,差异有统计学意义(P<0.05)。联合组不良反应发生率低于单药组,差异有统计学意义(P<0.05)。结论α-硫辛酸及甲钴胺联用治疗具有良好效果,有利于改善神经功能指标,在糖尿病周围神经病变患者治疗中较为适用。

铅对大鼠血液生化指标和脏器病理组织学的影响及α-硫辛酸的保护作用

为探究铅对大鼠血液生化及脏器病理组织学的影响和α-硫辛酸的保护效应,将24只雌性大鼠随机平均分为对照组、铅组、α-硫辛酸组、铅与α-硫辛酸联合组。对照组SD大鼠自由饮用双蒸水,铅组大鼠自由饮用铅水(300 mg/L),α-硫辛酸组大鼠按每千克体重50 mgα-硫辛酸剂量灌胃,铅与α-硫辛酸联合组大鼠在灌胃硫辛酸的同时饮用300 mg/L的铅水,每周记录体重。12周后,断尾采血分离血清进行生化分析,剖检采集肝脏、肾脏、肺脏、大脑,制作病理切片并镜检观察。结果显示:与对照组相比,铅组大鼠体重12周时显著减轻(P<0.05);丙氨酸氨基转移酶(ALT)和天门冬氨酸氨基转移酶(AST)活性,肌酐(CREA)水平显著升高(P<0.05);肝脏、肾脏、肺脏出现病理损伤,大脑皮质未见明显的病理损伤。与铅组相比,铅与α-硫辛酸联合组大鼠体重12周时显著增加(P<0.05),ALT活性显著降低(P<0.05),肝脏、肾脏、肺脏病理损伤有所缓解,大脑皮质未见明显病理损伤。结果表明,α-硫辛酸在铅致大鼠血液生化指标变化和脏器病理损害中具有一定保护效应。

燕麦β-葡聚糖—酪蛋白—玉米醇溶蛋白纳米粒子的制备及其负载α-硫辛酸

通过反溶剂共沉淀法制备出以玉米醇溶蛋白(Zein)包埋α-硫辛酸(LA)为内核,酪蛋白酸钠和燕麦β-葡聚糖的美拉德反应聚合物(MC)为外壳涂层的LA-Zein-MC纳米粒子。利用SEM、FTIR、XRD、DSC对LA-Zein-MC纳米粒子进行了表征,并对其稳定性和胃肠道模拟进行了测试。结果表明,LA-Zein-MC纳米粒子的最佳制备工艺条件为m(Zein)∶m(LA)=25∶1、m(Zein)∶m(MC)=1∶2.4。在该条件下制备的LA-Zein-MC纳米粒子粒径为235.4 nm,Zeta电位为–32.1 mV,多分散系数为0.144,最大包封率为56.17%,载药量为0.56%。LA-Zein-MC纳米粒子形貌光滑,LA被包埋在纳米粒子内部,该纳米粒子具有较高的NaCl稳定性和热稳定性。此外,LA实现了可控缓释。

离子凝胶的制备及其用于柔性应变传感器的研究

利用氯化胆碱-丙烯酰胺合成的低共熔溶剂(DES)与α-硫辛酸、微晶纤维素之间的共价键、离子键和高密度氢键的网络结构,形成了稳定、高黏附性、机械性能优异的离子凝胶。研究发现,制备的离子凝胶具有理想的黏附性(对玻璃的黏附力达69.3 kPa)、良好的自愈性(10 s可恢复到最大应力的41%)、优异的导电性(8.1×10^(-4) S/cm)和抗紫外性能(100%紫外线阻挡能力)。同时,该离子凝胶在不同材料和形状的基底上具有较好的黏附性,且在人体皮肤上具有很高的黏合性。基于该离子凝胶所组装成的柔性应变传感器可用于监测不同动作的相对电阻信号变化,并且表现出持续且稳定的信号。

α-硫辛酸药用价值的研究进展

α-硫辛酸是一种天然存在的万能抗氧化剂,作为多种线粒体复合酶的辅酶发挥着重要的生理作用。从α-硫辛酸各种最新药用价值开发入手,综述了其在抗氧化、抗炎症、糖尿病治疗、抗肿瘤及抗菌抗病毒等方面的研究进展,包括其生物化学机制、分子信号通路及临床应用实例等。展望了α-硫辛酸在营养补剂、联合治疗、减毒增效等方面的开发应用潜力。

甲钴胺联合α-硫辛酸治疗糖尿病周围神经病变对神经电生理的影响与相关机制研究

目的研究甲钴胺联合α-硫辛酸治疗糖尿病周围神经病变对神经电生理的影响与相关机制。方法104例糖尿病周围神经病变患者,根据治疗方式不同分为实验组与对照组,每组52例。对照组接受甲钴胺治疗,实验组在对照组基础上接受α-硫辛酸治疗。比较两组患者治疗效果以及治疗前后神经电生理指标(运动神经传导速度、感觉神经传导速度)、氧化应激指标[超氧化物歧化酶(SOD)、丙二醛(MDA)]。结果实验组治疗总有效率96.15%高于对照组的84.62%,差异具有统计学意义(P<0.05)。治疗后,实验组患者正中神经运动神经传导速度(55.12±3.01)m/s、腓总神经运动神经传导速度(49.86±2.89)m/s、正中神经感觉神经传导速度(48.72±2.25)m/s、腓总神经感觉神经传导速度(45.86±2.56)m/s均高于对照组的(47.12±2.96)、(42.67±1.69)、(42.09±1.79)、(38.12±2.61)m/s,差异均具有统计学意义(P<0.05)。实验组患者SOD(134.42±6.80)U/ml高于对照组的(125.09±6.26)U/ml,MDA(4.09±0.73)nmol/ml低于对照组的(5.88±0.60)nmol/ml,差异均具有统计学意义(P<0.05)。结论运用甲钴胺联合α-硫辛酸治疗糖尿病周围神经病变患者效果显著,可以显著改善患者的神经电生理指标,具有较高的疗效,可推广。