Clinical experimental study of Arnebia root oil promoting histological change and up-regulating bFGF expression in the wound

Objective： To explore the molecular biological mechanism of Arnebia root oil promoting wound surface healing by observing histological change and bFGF expression in wound surface tissue as well as wound surface healing rate. Methods： Raw surface in patients were randomly divided into 2 groups. Experimental group was treated by Arnebia root oil and control group was treated by petrolatum gauze, then the tissular structure of raw surface was observed by histology, histochemistry, electron microscope and raw surface healing rates was compared either, bFGF expression in wound surface tissue was also evaluated by Western-blot. Results： Raw surface healing rate of experimental group and control group had obvious difference（P〈0.05）. Raw surface of experimental group had more fibroblast, collagen and blood capillary, bFGF was expressed in both groups, and the level of bFGF expression in experimental group was higher than that in control group in every period. There were significant differences between 2 groups in gray-density value （ P〈0. 05）. Being as an internal control, no significant change was found for β-actin expression, although it occured in various phases. Conclusion： Arnebia root oil plays an important regulative role in the course of healing of wound and it can promote skin raw surface repair and accelerate wound surface healing, which are caused by enhancing bFGF in the wound tissue.     

Intervention effects of Jianpi Liqi Huoxue Decoction (健脾理气活血汤) on lipid peroxidative liver injury induced by alcohol

Objective： To study the intervention effects of Jianpi Liqi Huoxue Decoction （健脾理气活血汤, JLHD） on lipid peroxidative liver injury induced by alcohol. Methods： The rat alcoholic model of liver disease （ALD） induced by Lieber-DeCarli liquid diet was established. Thirty-two male SD rats were randomly divided into 4 groups ： the normal group （ n = 5）, the control group （ n = 9）, the model group （ n = 9） and the JLHD group （ n =9）. From the 4th week after modeling, the rats were given JLHD or distilled water by gastrogavage respectively, and the samples of blood and liver tissues were taken out from the rats for determination by the end of the 8th week. The hepatic pathological changes were observed with HE staining; the liver injury related indices, including activity of alanine aminotransferase （ALT） and aspartate aminotransferase （AST） in serum, γ-glutamyl transpeptidase （γ-GT） activity and triglyceride （TG） content in liver tissues, as well as the lipid peroxidation related indices, including malonaldehyde （MDA） content and nitric oxide synthase （NOS） activity in liver tissue, serum Fe^2＋ level, and the anti-peroxidation capacity related indices, including superoxide dismutase （SOD） activity, glutathion （GSH） content and reactive oxygen species （anti- ROS） activity in liver tissues were determined. Results： （ 1 ） There were obvious figures of fatty degeneration and inflammatory infiltration in liver tissues of the model group. As compared with the control group, in the model group, the activity of ALT and AST, and Fe^2＋ content in serum, γ-GT and NOS activity, TG and MDA content in liver tissues were significantly higher （ P〈0. 01 ）, while the activity of SOD, GSH and anti-ROS in liver tissues were significantly lower （P〈0.01）. （2） The fatty degeneration and inflammatory infiltration of liver tissues in the JLHD group were significantly lessen as compared with those in the model group; and the abnormalities of all the indexes revealed in the model rats were restored to certain extent in the JLHD group, and especially significant were the levels of ALT activity, MDA content and Fe^2＋ , which were nearly normal. Conclusion： JLHD has significant effects against alcoholic liver injury, the acting mechanism of which is likely to be related with its anti-lipid peroxidative effect.     

Intervention Effects of Jianpi Liqi Huoxue Decoction (健脾理气活血汤) on Lipid Peroxidative Liver Injury by Alcohol

Objective: To study the intervention effects of Jianpi Liqi Huoxue Decoction ( 健脾理气活血汤, JLHD) on lipid peroxidative liver injury induced by alcohol. Methods: The rat alcoholic model of liver disease (ALD) induced by Lieber-DeCarli liquid diet was established. Thirty-two male SD rats were randomly divided into 4 groups: the normal group ( n = 5), the control group ( n = 9), the model group ( n = 9) and the JLHD group (n = 9). From the 4th week after modeling, the rats were given JLHD or distilled water by gastrogavage respectively, and the samples of blood and liver tissues were taken out from the rats for determination by the end of the 8th week. The hepatic pathological changes were observed with HE staining; the liver injury related indices, including activity of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in serum, γ-glutamyl transpeptidase (γ-GT) activity and triglyceride (TG) content in liver tissues, as well as the lipid peroxidation related indices, including malonaldehyde (MDA) content and nitric oxide synthase (NOS) activity in liver tissue, serum Fe2 level, and the anti-peroxidation capacity related indices, including superoxide dismutase (SOD) activity, glutathion ( GSH) content and reactive oxygen species (antiROS) activity in liver tissues were determined. Results: ( 1 ) There were obvious figures of fatty degeneration and inflammatory infiltration in liver tissues of the model group. As compared with the control group, in the model group, the activity of ALT and AST, and Fe2 content in serum, γ-GT and NOS activity, TG and MDA content in liver tissues were significantly higher ( P＜0.01 ), while the activity of SOD, GSH and anti-ROS in liver tissues were significantly lower ( P＜0.01 ). (2) The fatty degeneration and inflammatory infiltration of liver tissues in the JLHD group were significantly lessen as compared with those in the model group; and the abnormalities of all the indexes revealed in the model rats were restored to certain extent in the JLHD group,and especially significant were the levels of ALT activity, MDA content and Fe2 , which were nearly normal.Conclusion: JLHD has significant effects against alcoholic liver injury, the acting mechanism of which is likely to be related with its anti-lipid peroxidative effect.     

Effects and mechanisms of a microcurrent dressing on skin wound healing: a review

The variety of wound types has resulted in a wide range of wound dressings, with new products frequently being introduced to target different aspects of the wound healing process. The ideal wound dressing should achieve rapid healing at a reasonable cost, with minimal inconvenience to the patient. Microcurrent dressing, a novel wound dressing with inherent electric activity, can generate low-level microcurrents at the device-wound contact surface in the presence of moisture and can provide an advanced wound healing solution for managing wounds. This article offers a review of the effects and mechanisms of the microcurrent dressing on the healing of skin wounds.     

Changes of Selenium Metabolism Glutathione Peroxidase Activity and Lipid Peroxides Content in Severely Scalding-injured Rats

The changes of sclenium metabolism, glutathione peroxidase activity and lipid peroxidescontent in the tissues of rats suffering from 30% TBSA full thickness scalding were observed in thefirst 7 days after injury. It was found that selenium content in the rat tissues decreased remarkably af-ter injury, which in turn resulted in serious reduction of glutathione peroxidasc activity and significantincrease of lipid peroxides in the scrum, crythrocytcs and liver. However the muscular tissue showedno significant changes. These facts imply that after burn injury, the body is in a state of selenium deficiency, the lossof selenium might be responsible for the reduction of anti - peroxidation ability of glutathioneperoxidase, and conscqucntly there is an increase of lipid peroxides in the tissues. Only the musculartissue is insensitive to lipid peroxidation. It is believed that the reduction of anti-peroxidation abilityof glutathione peroxidasc after bum injury might be one of the main causes to intensify, the injury re-suiting from free radicals.     

Protective Effect of Schisanhenol Against Oxygen Radical Induced Mitochondrial Toxicity on Rat Heart and Liver

Schisanhenol(SAL)had been shown to have poent antioxidant activities.The protective effects of SAL against oxygen radical induced mitochondrial injuries of rat heart and liver were investigated in the present study.The ferrous-cysteine induced mitochondrial lipid peroxidation was significantly inhibited by SAL.while the loss of ATP ase activity inducd by the lipid peroxidation was prevented.The rididification of mitochondrial membrane,aw well as swelling,lysis and disintegration of the mitochondria induced by ferrous-cysteine were all significantly inhibited by SAL.These results further confirm that SAL possesses antioxidant activity.     

Clinical experimental study of Arnebia Root oil in increasing FGF expression and promoting wound surface healing

Objective：To investigate the effection of Arnebia Root oil on the FGF expression in wound surface and the ability to promote wound surface healing. Methods：24 wound surfaces of patients were divided into two groups. Experimental group was treated by Arnebia Root oil and the control was treated by petrolatum gauze. Histology, histochemistry, electron microscope methods and healing rate measurement were used to show the FGF expression and wound healing process. Results：Endogenous FGF were expressed in both of the groups, in which of the experimental group was higher than that of the control group, the wound surface healing rate of experimental group was also higher and paralleled with FGF expression. Conclusion：Arnebia Root oil has effects to promote FGF expression and enhances wound surface repair. The wound healing mechanism between the action of Arnebia Root oil and function of FGF need further investigating.     

Oxygen free radical injury and its relation to bacterial and endotoxin translocation after delayed fluid resuscitation: clinical and experimental study.

OBJECTIVE To examine whether there is generation of oxygen free radicals (OFR) and lipid peroxidation of cell membrane after volume replacement for burn shock, and to study the relationship between OFR injury and enterogenous endotoxemia.

METHODS Forty-seven burn patients were involved in this study. Among them, 18 had delayed fluid resuscitation (DR) and the others had early fluid resuscitation (ER) within 6 hours postburn. Sixty-six gnotobiotic rats were used in a collaborating experiment as burn models. They were divided into 4 groups: sham injury (n = 6), early resuscitation (n = 24), late resuscitation (n = 24) and vitamins E and C treatment group (n = 12). All the rats, except those in the sham injury group, were inflicted with 40% total body surface area (TBSA) third-degree burns. OFR was determined in the blood of patients with electron spin resonance (ESR). S/W ratio and tau c values of patients' erythrocytes were measured with ESR spectrometer. Blood superoxide dismutase (SOD) and glutathione peroxidase (GSHPx) activities, malondialdehyde contents and plasma endotoxin levels were assayed. Rats were sacrificed at the 12th, 24th, 48th and 72nd hour after injury. Plasma endotoxin levels, mucosal SOD, GSHPx and malondialdehyde (MDA), as well as diamine oxidase activity of ileum were determined. Cultures of mesenteric lymph nodes (MLN), liver, spleen, heart, lung, kidney and blood were done.

RESULTS A significant increase in blood OFR contents and plasma MDA, and a significant decline in blood SOD and GSHPx were found after resuscitation in DR group as compared with those in ER group. Both strong to weak spectra component (S/W) ratio and tau c value were higher in DR group in contrast with those in ER group. Higher elevation in plasma endotoxin level in DR group was seen. In DR group, plasma MDA content was correlated with S/W ratio, tau c value and plasma endotoxin level. In rats, the level of mucosal MDA, plasma endotoxin and incidence of bacterial translocation (BT) were significantly higher. Mucosal SOD, GSHPx and diamine oxidase (DAO) activity were significantly lower in DR group as compared with those in ER group. In DR group, mucosal MDA content was negatively correlated with mucosal DAO activity, while the latter was negatively correlated with BT. After treatment with vitamins E and C, mucosal MDA content decreased, plasma endotoxin and BT significantly declined and mucosal DAO heightened.

CONCLUSIONS Tissue reperfusion might induce the production of OFR, resulting in lipid peroxidation injury, especially to intestinal mucosa, and resulting in disruption of mucosal barrier function followed by endotoxemia and BT.

     

Dose-effect relationships in total body irradiation on the healing of cutaneous wounds

Objective To study the effects of dosages of total body irradiation on the healing process of cutaneous wounds and to observe the changes of wound area at different periods after injury.Methods The entire body irradiation from a ^60Co γ-ray source was performed on Wistar rats. The single dosage varied from 1 to 8 Gy. Within 1 h after irradiation, two whole thickness circular cutaneous wounds corresponding to 2. 5% of total body surface area (φ=22 mm) were produced on the back of the animals (combined injury groups ). Same wounds were produced on rats with noirradiation (single wound group). Wound healing was observed at different points after injury.Results After total body irradiation with the dose of 1,2,3,4,5,6, 7 or 8 Gy, the wound healing was obviously retarded as the dosages increased. The wound area remained was larger in the large dosage groups than in the small dosage groups. Seven days after injury, there was 33. 5% wound surface left unhealed in the single wound group, whereas in the combined injury groups, 35. 4%,38. 1%, 41.6%, 48. 8%, 53. 9%, 63. 7%, 69.2% and 73. 9% of the wound surfaces remained unhealed, respectively. Statistical analysis showed marked correlations between the various times after total body irradiation and various dosages to the percentage of unhealed wound surface. Nine dose-effect relation formulae were deduced according to the statistical results.Conclusions In soft tissue trauma combined with radiation injury, the delay of wound healing is related to the dose of radiation inflicted. It is also related to the time between iniurv and time of observation.     

Moxibustion Promotes Formation of Granulation in Wound Healing Process through Induction of Transforming Growth Factor-β in Rats

Objective: To examine the effect of moxibustion on the wound healing process and its mechanism using a rat wound model. Methods: Sixty male Sprague-Dawley rats were randomly divided into a sham-treated group(n=30, wound surgery only) and a moxibustion group(n=30, wound treated with moxibustion). Circular fullthickness skin wounds were produced in rats. Moxibustion was applied to the edge of wound and was continued on alternating days till 14 days after surgery, followed by measurement of wound size. Expression of collagens, prolyl-4-hydroxylase(P4 H) and transforming growth factor-β(TGF-β) were evaluated by histochemical study and real-time polymerase chain reaction. Results: The size of the wound lesion was significantly reduced in rats treated with moxibustion as compared to that in sham-treated rats at 4–10 days after wounding(P0.01). Moxibustion stimulated mRNA expression of collagens at 4 days(P0.01), but not at 7 days, accompanied by enhanced proliferation of P4 H-positive fibroblasts. Of importance, expression of TGF-β in tissue from the wound lesion treated with moxibustion was significantly increased as compared to that in sham-treated rats at 4 days(P0.01 or P0.05), but not at 7 days. Conclusions: The treatment with moxibustion promoted the wound healing process in the early phase through proliferation of fibroblasts and rapid formation of granulation, possibly mediated by induction of TGF-β which is a key molecule in the physiological process of wound healing. Moxibustion can be expected to be effective as complementary treatment for intractable ulcers.     

火器伤合并海水浸泡兔肢体骨骼肌组织脂质过氧化反应

目的：观察兔肢体火器伤合并海水浸泡后,伤道周围骨骼肌过氧化脂质与抗氧化酶活力的 早期救治提供实验依据。方法 用滑膛枪发射２５０ｍｇ钢珠,致伤兔后肢,伤后将致伤兔随机分为两组：一组为海水浸泡组（ＳＩＧ）,将兔浸泡于粗制盐配制的人造海水中３０ｍｉｎ。另一组为单纯致伤组（ＳＷＧ）,伤后不浸泡海水。伤后３、６、１２、２４ｈ手术取距伤道边缘０．５ｃｍ（Ａ区）,１．５ｃｍ（Ｂ区）和２．５ｃｍ（Ｃ区）处肌组织,     

几丁糖促进兔角膜碱烧伤愈合的作用

目的 观察2％医用几丁糖在兔角膜碱烧伤早期对角膜上皮愈合，抗过氧化损伤和炎症反应的影响。方法 用15只新西兰大白兔制作角膜碱烧伤模型，设立几丁糖组(右眼)和磷酸盐缓冲液对照组(左眼)。裂隙灯观察角膜烧伤后角膜炎症反应及上皮修复过程。于烧伤后第7，14，28天各随机处死5只兔，取角膜和房水检测超氧化物歧化酶(SOD)活力和丙二醛(MDA)含量，并观察角膜组织病理学变化。结果 医用几丁糖组较对照组同期角膜上皮修复快，SOD活性高，MDA生成量少。角膜炎症反应轻。结论 几丁糖在角膜碱烧伤急性期治疗中具有较强的促进上皮修复，抗过氧化损伤及抑制炎症的作用。     

铅致幼鼠脑脂质过氧化的实验研究

目的 :探讨铅致发育期中枢神经系统脂质过氧化作用。方法 :通过大鼠孕期及哺乳期不同剂量染铅及用维生素E(VitaminE ,VE)干预所致幼鼠模型 ,测定出生后第 7,2 1d幼鼠脑的脂质过氧化产物 (lipidperoxidativeproduct ,LPO)水平 ,谷胱甘肽 (glutathione ,GSH)含量及超氧化物歧化酶 (superoxidedismutase ,SOD)、谷胱甘肽过氧化物酶 (glutathioneperoxidase ,GSH PX)、过氧化氢酶 (catalase ,CAT)活力。 结果 :无论出生后 7d还是 2 1d ,中、高剂量染铅组幼鼠脑组织LPO水平升高、SOD活力下降 (P <0 .0 5 ,P <0 .0 1) ;出生后 7d幼鼠高剂量染铅组GSH含量下降 (P <0 .0 5 ) ;出生后 2 1d中剂量染铅组CAT活力下降 (P <0 .0 5 ) ;且VE拮抗了这种脂质过氧化作用 (P <0 .0 5 )。结论 :铅可能通过增强脑组织脂质过氧化过程而致发育期神经系统的损伤。     

负压辅助闭合技术与负压封闭引流技术治疗糖尿病足溃疡的效果

目的:研究负压辅助闭合技术(VAC)与负压封闭引流技术(VSD)两种负压治疗模式治疗糖尿病足溃疡的效果。方法:选取2020年10月至2022年1月期间118例糖尿病足溃疡患者,随机分为VAC组和VSD组,各59例,VAC组予以VAC治疗,VSD组予以VSD治疗。比较治疗后两组创面愈合效果、创面愈合时间、住院时间、换药次数,7 d后肉芽组织覆盖率、细菌清除率、创面缩小率;治疗前后组织氧分压变化、琥珀酸脱氢酶(SDH)和乳酸脱氢酶(LDH)水平、足背动脉血流速度。结果:治疗后VAC组创面愈合效果、组织氧分压、足背动脉血流速度、SDH、肉芽组织覆盖率、细菌清除率、创面缩小率均高于VSD组(P<0.05);VAC组创面愈合时间、住院时间短于VSD组(P<0.05);VAC组换药次数少于VSD组(P<0.05);VAC组LDH浓度低于VSD组(P<0.05)。结论:相较于VSD,VAC用于糖尿病足溃疡创面时愈合效果更佳,能够更有效地提高组织氧分压,可有效缩短住院时间,减少换药次数,促进足背动脉血液循环。     

Effect of In Vivo and in Vitro Treatment with Arsenite on Rat Hepatic Mitochondrial and Microsomal Enzymes

ＥｆｆｅｃｔｏｆＩｎＶｉｖｏａｎｄｉｎＶｉｔｒｏＴｒｅａｔｍｅｎｔｗｉｔｈＡｒｓｅｎｉｔｅｏｎＲａｔＨｅｐａｔｉｃＭｉｔｏｃｈｏｎｄｒｉａｌａｎｄＭｉｃｒｏｓｏｍａｌＥｎｚｙｍｅｓＣＨＥＮＧＪｉｚｈｏｎｇ（程继忠）；ＷＵＨｕｉｑｉｏｎｇ（邬惠琼）；Ｓ...     

金钱草提取物对红细胞膜脂质过氧化损伤的保护作用

以3种自由基体系诱导的红细胞膜脂质过氧化为模型,测定金钱草提取物对脂质过氧化的抑制作用。结果表明:提取物对黄嘌呤—黄嘌呤氧化酶系统、H2O2及UV照射3种方法引起的细胞膜脂质过氧化均有抑制作用,其作用呈剂量依赖性。提示金钱草提取物对自由基引起的细胞膜脂质过氧化损伤有保护作用。     

鸸鹋油对烫伤大鼠创面的抗炎及促愈合作用

OBJECTIVE: To investigate the effects of topical application of emu oil on wound healing in scalded rats. METHODS: In 144 male Wistar rats with 10%; total body surface superficial II degree scald treated on a random basis with physiological saline, povidone iodine and emu oil, respectively, the changes of the wound were observed and the wound tissue and blood samples harvested at different times after injury for evaluation of histopathological changes, total tissue water content (measured by wet:dry weight ratios), and tumor necrosis factor (TNF)-alpha levels in the wound tissue and plasma by enzyme-linked immunosorbent assay (ELISA). The general condition of the wound healing was also observed. RESULTS: After application of emu oil, the swelling and effusion of the burn wound were alleviated and evidences of wound infection or adverse effects were not observed. Pathological examination showed that emu oil could alleviate topical inflammation, which was particularly obvious on days 1 and 3 after injury as compared with the other two groups. On day 3 after injury, water content and TNF-alpha level in the tissues was markedly decreased with the application of emu oil (P<0.05), with a significant correlation between their changes (P<0.001) and shortened wound healing time (P<0.05). Pathological examination showed that emu oil could promote epithelialization and differentiation of various epidermal layers. CONCLUSION: Emu oil has topical anti-inflammatory activity in rats with superficial II degree scald, possibly in association with decreased levels of the proinflammatory cytokines in the tissues and can promote wound healing by inhibiting local secondary inflammation.     

鸸鹋油对烫伤大鼠创面的抗炎及促愈合作用

目的 从炎症反应的角度探讨外用鸸鹋油对烫伤大鼠创面愈合的影响。方法 建立10%体表面积浅Ⅱ度烫伤大鼠模型,将144只雄性Wistar大鼠随机分为A、B、C组,分别外用生理盐水、碘伏、鸸鹋油治疗,观察创面的大体变化及愈合情况,分别留取不同时相的创面和血液标本,进行组织病理学检查和含水量测定(干湿重法)、ELISA法检测组织和血浆TNFα含量。结果 外用鸸鹋油可使创面肿胀、渗出减轻,创面无感染迹象,未见任何副作用;病理形态学观察发现鸸鹋油可使局部组织炎症反应减轻,与A、B组相比较,以伤后1、3d差异最为明显;C组伤后3d组织含水量及TNF-α含量明显减少(P<0.01),两者之间存在正相关关系(P<0.001);可使创面愈合时间缩短(P<0.01),促进创面再上皮化和表皮各层的分化。结论 在浅Ⅱ度烫伤创面外用鸸鹋油具有抗炎作用,可能与局部组织中促炎细胞因子水平的降低有关;并能促进创面愈合,可能与其抑制局部组织的继发性炎症反应有关。     

益气活血药对血管紧张素Ⅱ诱导的心肌细胞能量与脂质过氧化反应变化的影响

目的观察心肌细胞在血管紧张素Ⅱ(AngⅡ)作用后反映能量的酶与脂质过氧化反应的变化及不同类中药对其的影响.方法用AngⅡ作用于培养的SD大鼠乳鼠心肌细胞,观察作用24、48、72、96 h细胞上清液中乳酸脱氢酶(LDH)、琥珀酸脱氢酶(SDH)、丙二醛(MDA)、超氧化物歧化酶(SOD)的变化及益气、活血、益气活血中药的作用.结果在AngⅡ作用48 h后,细胞上清液中LDH、SDH明显增加(P＜0.01),MDA含量明显升高,SOD活性明显降低(P＜0.01),各中药组LDH、SDH明显降低,且可明显减少MDA含量、升高SOD活性(P＜0.05或P＜0.01).结论AngⅡ作用一定时间后,伴随着能量的变化和引发的脂质过氧化反应,使心肌细胞的功能受到影响,益气、活血、益气活血中药均有保护作用,尤以益气活血药作用明显.     

黄芩甙对大鼠心肌缺血再灌注所致脂质过氧化损伤的保护作用

目的：研究黄芩甙（baicalin,Bai)对大鼠心肌缺血再灌注所致脂质过氧化损伤的保护作用。方法：采用结扎在体大鼠冠状动脉左前降支造成心肌缺血30min,随后恢复血流行再灌注120min,复制心肌缺血再灌注损伤模型。结果：Bai能不同程度地降低缺血再灌注所引起心肌组织脂质过氧化物丙二醛（MDA）含量升高,提高超氧化物歧化酶（SOD）活性,保护Na^ -K^ -ATP酶活力,降低血清肌酸激酶（CK）和乳酸脱氢酶（LDH）水平。结论：Bai可通过保护脑组织抗氧化酶的活性,抑制脂质过氧化反应,减轻自由基对心肌组织的损害,对缺血再灌注心肌产生保护作用。