AIM:To investigate the effect of human umbilical cord stem cells,both mesenchymal and hematopoietic(CD34+),in the treatment of arthritis.METHODS:Mesenchymal stem cells(MSCs) and hematopoietic(CD34+) stem cells(HSC) we...AIM:To investigate the effect of human umbilical cord stem cells,both mesenchymal and hematopoietic(CD34+),in the treatment of arthritis.METHODS:Mesenchymal stem cells(MSCs) and hematopoietic(CD34+) stem cells(HSC) were isolated from human umbilical cord blood obtained from the umbilical cord of healthy pregnant donors undergoing fullterm normal vaginal delivery.MSC,HSC,methotrexate(MTX) and sterile saline were injected intra-articularly into the rat hindpaw with complete freunds adjuvant(CFA) induced arthritis after the onset of disease(day 34),when arthritis had become well established(arthritis score ≥ 2).Arthritic indices were evaluated and the levels of interleukin(IL)-1,tumor necrosis factor(TNF)-α and interferon(IFN)-γ and anti-inflammatory cytokine IL-10 in serum were determined using enzyme-linked immunosorbent assay.Animals of all groups were sacrificed 34 d after beginning treatment,except positive control(PC) which was sacrificed at 10,21 and 34 d for microscopic observation of disease progression.We used hematoxylin,eosin and Masson's trichrome stains for histopathological examination of cartilage and synovium.RESULTS:The mean arthritis scores were similar in all groups at 12 and 34 d post immunization,with no statistical significant difference.Upon the injection of stem cells(hematopoietic and mesenchymal),the overall arthritis signs were significantly improved around 21 d after receiving the injection and totally disappeared at day 34 post treatment in MSC group.Mean hindpaw diameter(mm) in the MSC rats was about half that of the PC and MTX groups(P = 0.007 and P = 0.021,respectively) and 0.6 mm less than the HSC group(P = 0.047),as indicated by paw swelling.Associated with these findings,serum levels of TNF-α,IFN-γ and IL-1 decreased significantly in HSC and MSC groups compared to PC and MTX groups(P < 0.05),while the expression of IL-10 was increased.Histopathological examination with H and E stain revealed that the MTX treated group showed significant reduction of leucocytic infiltrate and hypertrophy of the synovial tissue with moderate obliteration of the joint cavity.Stem cells treated groups(both hematopoietic CD34+ and mesenchymal),showed significant reduction in leucocytic infiltrate and hypertrophy of the synovial tissue with mild obliteration of the joint cavity.With Masson's trichrome,stain sections from the PC group showed evidence of vascular edema of almost all vessels within the synovium in nearly all arthritic rats.Vacuoles were also visible in the outer vessel wall.The vessel became hemorrhagic and finally necrotic.In addition,there was extensive fibrosis completely obliterating the joint cavity.The mean color area percentage of collagen in this group was 0.324 ± 0.096,which was significantly increased when compared to the negative control group.The mean color area percentage of collagen in hematopoietic CD34+ and mesenchymal groups was 0.176 ± 0.0137 and 0.174 ± 0.0197 respectively,which showed a marked decrement compared to the PC group,denoting a mild increase in synovial tissue collagen fibers.CONCLUSION:MSC enhance the efficacy of CFAinduced arthritis treatment,most likely through the modulation of the expression of cytokines and amelioration of pathological changes in joints.展开更多
Objective:Celastrus paniculatus(CP)Willd.is a plant indigenous to India with medicinal properties.It is used in the ayurvedic treatment of inflammatory ailments such as rheumatoid arthritis.The present study was desig...Objective:Celastrus paniculatus(CP)Willd.is a plant indigenous to India with medicinal properties.It is used in the ayurvedic treatment of inflammatory ailments such as rheumatoid arthritis.The present study was designed to investigate the therapeutic efficacy of the petroleum ether fraction(PCP)obtained from CP seeds on adjuvant-induced arthritis in rats.Methods:Arthritis was induced in SpragueeDawley rats by immunization with Freund’s complete adjuvant(FCA).Arthritis severity was evaluated by arthritis score,paw volume,tibiotarsal joint thickness,body weight,dorsal flexion pain,motility test,stair climbing ability and index of thymus and spleen.Moreover,histopathology of knee joints supported by haematological analysis was used to assess the anti-arthritic action of PCP.The levels of superoxide dismutase(SOD),glutathione(GSH),catalase(CAT),nitric oxide(NO)and malondialdehyde(MDA)in liver were also assessed.Serum samples were collected for estimation of aspartate transaminase(AST),alanine transaminase(ALT)and alkaline phosphatase(ALP).In addition,cytokines such as tumour necrosis factor-alpha(TNF-a)and interleukin-6(IL-6)were estimated in plasma.Results:PCP significantly alleviated arthritic progression with regards to paw swelling,arthritic score,immune organ indices,hyperalgesic effect and body weight.This phenomenon was correlated with significant suppression of overproduction of inflammatory cytokines(TNFa and IL-6),oxidant stress markers(MDA and NO)and cellular enzyme(AST,ALT and ALP)levels versus arthritic rats without treatment.Moreover,PCP restored the decreased levels of SOD,CAT and GSH.Conclusion:Our results suggest that the anti-arthritic properties of PCP may be due to immunosuppressive effects,cytokine regulation,antioxidant effects and bone-protective activities.展开更多
Pain is a global problem and has been found sensitive to acupuncture. A large number of existing and newly published studies have demonstrated the analgesic effect of electroacupuncture(EA) in complete Freund's ad...Pain is a global problem and has been found sensitive to acupuncture. A large number of existing and newly published studies have demonstrated the analgesic effect of electroacupuncture(EA) in complete Freund's adjuvant(CFA) rat model, necessitating a new and comprehensive review. To evaluate the curative effect of EA on thermal hyperalgesia in CFA rats, and to explore parameters that influence treatment effects, studies of EA treatment on thermal hyperalgesia of CFA rat model were identified from nine databases up to June 17, 2017. Outcome measure was heat pain threshold. All the data were analyzed using Stata 14.0/MP software. 26 studies identified included 801 rats. The quality score of the studies ranged from 3 to 6, with a mean of 4.08. The effect of EA group was improvement in outcome compared with CFA group. In subgroup analyses, frequency 2, 100, 2/100 or 20-100 Hz. acupoint Huántiào(环跳GB30),Kūnlún(昆仑 BL60) +Xuánzhōng(悬钟 GB39), Zúsānlī(足三里 ST36) +BL60 or ST36+Sānyīnjiāo(三阴交SP6), retention time 20 or 30 min, treatment time for post-CFA injection immediately, the same day as CFA injection, post-CFA injection 24 or 48 h and interval 24 or 48 h all can improve the effect on CFA rat heat pain threshold. These results show that there is positive effective of EA in CFA-induced pain,different parameters have different effects on EA treatment of CFA heat hyperalgesia, however, because of the number of eligible researches and the high risk of bias, the evidence supporting this conclusion is limited.展开更多
Objective:To establish a collagen type II-induced rat model of rheumatoid arthritis(RA)presenting characteristics of the human form of the traditional Chinese syndrome pattern of toxic heat-stasis painful obstruction(...Objective:To establish a collagen type II-induced rat model of rheumatoid arthritis(RA)presenting characteristics of the human form of the traditional Chinese syndrome pattern of toxic heat-stasis painful obstruction(bi zheng;arthromyodynia)as well as pathologic features of active RA.The Chinese herbal medicine Tengmei decoction was used to validate the animal model.Methods:Ninety specific pathogen free Sprague-Dawley rats were randomly divided into a normal group of 6 rats and a model group of 84 rats.To establish the rat model of collageninduced arthritis(CIA),bovine type II collagen in complete Freund’s adjuvant was injected into the model group rats as a priming dose(Day 0)and boosting dose(Day 9).Changes in arthritic index(AI)scores,including limb swelling,were monitored.Thereafter,24 successfullyestablished CIA rats were randomly assigned to 4 groups with 6 animals each:model,positive control drug,high-dose traditional Chinese herbal medicine,and traditional Chinese herbal medicine.A blank control group of 6 rats was included.After 12 weeks of intervention with Tengmei decoction,articular synovial tissue and serum specimens were collected to detect interleukin-2(IL-2)and IL-17 transcription and protein expression levels.展开更多
Objective:To evaluate the anti-arthritic effect of aqueous and methanolic extracts of Distemonanthus benthamianus.Methods:Monoarthritis was induced by an injection of 0.3 mL zymosan A(0.9%NaCl,v/v)in the right posteri...Objective:To evaluate the anti-arthritic effect of aqueous and methanolic extracts of Distemonanthus benthamianus.Methods:Monoarthritis was induced by an injection of 0.3 mL zymosan A(0.9%NaCl,v/v)in the right posterior knee joints of rats.Then,joint diameter and pain threshold were determined.Polyarthritis was induced by an intracaudal injection of complete Freund’s adjuvant and rats were treated from day 14 post 1st complete Freund’s adjuvant injection until 28 day.The clinical,hematological,biochemical and oxidative stress parameters were evaluated.In addition,histological analysis of the knee joint was perfomed in both tests.Results:The aqueous and methanolic extracts of Distemonanthus benthamianus at a dose of 500 mg/kg ameliorated zymosan A-induced monoarthritis,as evidenced by reduced joint diameter,increased pain threshold,as well as improved joint architecture.In addition,both extracts of Distemonanthus benthamianus markedly increased body weight and pain threshold,while reducing paw edema in polyarthritic rats.They also led to a marked decrease in platelets and white blood cells(P<0.05),as well as a significant increase in red blood cells,hemoglobin and hematocrit(P<0.05).The aqueous and methanolic extracts of Distemonanthus benthamianus significantly reduced alanine aminotransferase,aspartate aminotransferase,alkaline phosphatase activities,while increasing serum protein levels(P<0.05)with no significant variation in creatinine level.Moreover,both extracts increased catalase and glutathione activities(P<0.05),and inhibited malondialdehyde and nitric oxide production(P<0.01 and P<0.001)in the liver and kidneys.Histological analysis of the joints showed that both extracts triggered tissue reparation.Conclusions:Distemonanthus benthamianus could be used as a potential candidate in the treatment of rheumatoid arthritis.展开更多
目的利用完全弗氏佐剂(CFA)建立雌性SD大鼠类风湿关节炎(RA)模型,并考察不同给药方式的塞来昔布对RA的治疗效果。方法将24只雌性SD大鼠随机分成正常对照组和低、中、高剂量模型组(n=6),低、中、高剂量模型组分别用0.05、0.1、0.2 mL CFA...目的利用完全弗氏佐剂(CFA)建立雌性SD大鼠类风湿关节炎(RA)模型,并考察不同给药方式的塞来昔布对RA的治疗效果。方法将24只雌性SD大鼠随机分成正常对照组和低、中、高剂量模型组(n=6),低、中、高剂量模型组分别用0.05、0.1、0.2 mL CFA(10 mg/mL)于大鼠右后肢足跖部注射诱导构建RA模型,筛选出合适的剂量。另取24只雌性SD大鼠分为正常对照组、模型对照组、塞来昔布口服组、塞来昔布注射组(n=6),后3组利用最佳致炎剂量CFA建立RA模型。塞来昔布口服组给予市售塞来昔布胶囊,每天灌胃1次,每次20 mg;塞来昔布注射组给予用原料药配制的塞来昔布混悬液,每周于大鼠右后肢足跖部注射给药1次,剂量20 mg/kg。测量各组大鼠足容积,并进行临床评分。通过ELISA检测各组大鼠血清中3种炎症因子(IL-1β、IL-6、TNF-α)的浓度,取大鼠踝关节组织进行H-E染色以观察组织病变情况。结果在雌性SD大鼠中,足跖部注射0.1 mL CFA(10 mg/mL)可较好地模拟RA中度炎症反应,注射CFA后逐渐出现足爪红肿,全身临床评分及足部关节炎指数评分均有升高,炎症高峰期在免疫后19 d。塞来昔布口服组和注射组足容积较模型对照组减小(P均<0.05),全身临床评分及足部关节炎指数评分均较模型对照组降低(P均<0.01),血清IL-1β、IL-6、TNF-α浓度均较模型对照组降低(P均<0.05),踝关节组织病理改变均较模型对照组减轻;其中塞来昔布注射组的全身临床评分及足部关节炎指数评分低于口服组(P均<0.05),踝关节组织病理改变轻于口服组。结论足跖部注射0.1 mL CFA(10 mg/mL)可致SD雌性大鼠中度炎症反应,能较好地模拟RA的病理过程。每周经足跖部注射1次塞来昔布混悬液对模型大鼠RA的疗效优于每天口服1次塞来昔布。展开更多
Enicostemma littorale (Blume), the folk medicine is used for rheumatic pain and it was selected for scientific validation. The 85% methanolic extract obtained from the whole plant of Enicostemma littorale has been ass...Enicostemma littorale (Blume), the folk medicine is used for rheumatic pain and it was selected for scientific validation. The 85% methanolic extract obtained from the whole plant of Enicostemma littorale has been assessed for analgesic and anti-inflammatory activity. The analgesic activity has been evaluated by hot plate and tail immersion method and the anti-inflammatory and antioxidant activities are evaluated by Complete Freund’s adjuvant induced arthritic model. The results of the evaluation of analgesic activity in hot plate and tail immersion method revealed that the extract exhibits significant activity at 150 mg/kg body weight and the effect is found to increase dose dependently. In Freund’s adjuvant induced arthritis, Enicostemma littorale is found to decrease the paw volume (15.81%). Significant protection is also observed by elevating antioxidant enzymes. In conclusion, the 85% methanolic extract of Enicostemma littorale possesses significant analgesic and anti-inflammatory activities in Freund’s adjuvant induced arthritic model in rats.展开更多
Rheumatoid arthritis (RA) is a common form of chronic inflammatory arthritis, and it mainly causes the destruction of small joints. The development of this disease is a relatively secret and repeated process, and ther...Rheumatoid arthritis (RA) is a common form of chronic inflammatory arthritis, and it mainly causes the destruction of small joints. The development of this disease is a relatively secret and repeated process, and therefore early diagnosis and evaluation of the disease is usually difficult. In this study, an arthritis model was successfully induced by injecting complete Freund’s adjuvant (CFA) into the toes of lower limbs of Wistar rats. Seven days after injection of CFA, obvious redness and swelling appeared at the toe joints of lower limbs accompanied by more sensitivity to thermal stimulation. Using the ultraweak bio-photon imaging system (UBIS) established by us, the toe joint area of the lower limbs of rats was imaged 7 days after injection of CFA. It was found that the volar part of lower limbs of arthritis rats showed significantly higher biophoton emissions compared with the control group. The results of this study may provide a basis for further research and devel-opment of early diagnosis and assessment of lesion progression of rheumatoid arthritis.展开更多
文摘AIM:To investigate the effect of human umbilical cord stem cells,both mesenchymal and hematopoietic(CD34+),in the treatment of arthritis.METHODS:Mesenchymal stem cells(MSCs) and hematopoietic(CD34+) stem cells(HSC) were isolated from human umbilical cord blood obtained from the umbilical cord of healthy pregnant donors undergoing fullterm normal vaginal delivery.MSC,HSC,methotrexate(MTX) and sterile saline were injected intra-articularly into the rat hindpaw with complete freunds adjuvant(CFA) induced arthritis after the onset of disease(day 34),when arthritis had become well established(arthritis score ≥ 2).Arthritic indices were evaluated and the levels of interleukin(IL)-1,tumor necrosis factor(TNF)-α and interferon(IFN)-γ and anti-inflammatory cytokine IL-10 in serum were determined using enzyme-linked immunosorbent assay.Animals of all groups were sacrificed 34 d after beginning treatment,except positive control(PC) which was sacrificed at 10,21 and 34 d for microscopic observation of disease progression.We used hematoxylin,eosin and Masson's trichrome stains for histopathological examination of cartilage and synovium.RESULTS:The mean arthritis scores were similar in all groups at 12 and 34 d post immunization,with no statistical significant difference.Upon the injection of stem cells(hematopoietic and mesenchymal),the overall arthritis signs were significantly improved around 21 d after receiving the injection and totally disappeared at day 34 post treatment in MSC group.Mean hindpaw diameter(mm) in the MSC rats was about half that of the PC and MTX groups(P = 0.007 and P = 0.021,respectively) and 0.6 mm less than the HSC group(P = 0.047),as indicated by paw swelling.Associated with these findings,serum levels of TNF-α,IFN-γ and IL-1 decreased significantly in HSC and MSC groups compared to PC and MTX groups(P < 0.05),while the expression of IL-10 was increased.Histopathological examination with H and E stain revealed that the MTX treated group showed significant reduction of leucocytic infiltrate and hypertrophy of the synovial tissue with moderate obliteration of the joint cavity.Stem cells treated groups(both hematopoietic CD34+ and mesenchymal),showed significant reduction in leucocytic infiltrate and hypertrophy of the synovial tissue with mild obliteration of the joint cavity.With Masson's trichrome,stain sections from the PC group showed evidence of vascular edema of almost all vessels within the synovium in nearly all arthritic rats.Vacuoles were also visible in the outer vessel wall.The vessel became hemorrhagic and finally necrotic.In addition,there was extensive fibrosis completely obliterating the joint cavity.The mean color area percentage of collagen in this group was 0.324 ± 0.096,which was significantly increased when compared to the negative control group.The mean color area percentage of collagen in hematopoietic CD34+ and mesenchymal groups was 0.176 ± 0.0137 and 0.174 ± 0.0197 respectively,which showed a marked decrement compared to the PC group,denoting a mild increase in synovial tissue collagen fibers.CONCLUSION:MSC enhance the efficacy of CFAinduced arthritis treatment,most likely through the modulation of the expression of cytokines and amelioration of pathological changes in joints.
基金The authors are grateful for the financial support from the University Grant Commission(UGC),India(No.F 5-63/2007).The authors also wish to thank Dr Dnyaneshwar Nagmoti,Mr Nitin Gawali and Ms Sarayu Pai who contributed to this study.
文摘Objective:Celastrus paniculatus(CP)Willd.is a plant indigenous to India with medicinal properties.It is used in the ayurvedic treatment of inflammatory ailments such as rheumatoid arthritis.The present study was designed to investigate the therapeutic efficacy of the petroleum ether fraction(PCP)obtained from CP seeds on adjuvant-induced arthritis in rats.Methods:Arthritis was induced in SpragueeDawley rats by immunization with Freund’s complete adjuvant(FCA).Arthritis severity was evaluated by arthritis score,paw volume,tibiotarsal joint thickness,body weight,dorsal flexion pain,motility test,stair climbing ability and index of thymus and spleen.Moreover,histopathology of knee joints supported by haematological analysis was used to assess the anti-arthritic action of PCP.The levels of superoxide dismutase(SOD),glutathione(GSH),catalase(CAT),nitric oxide(NO)and malondialdehyde(MDA)in liver were also assessed.Serum samples were collected for estimation of aspartate transaminase(AST),alanine transaminase(ALT)and alkaline phosphatase(ALP).In addition,cytokines such as tumour necrosis factor-alpha(TNF-a)and interleukin-6(IL-6)were estimated in plasma.Results:PCP significantly alleviated arthritic progression with regards to paw swelling,arthritic score,immune organ indices,hyperalgesic effect and body weight.This phenomenon was correlated with significant suppression of overproduction of inflammatory cytokines(TNFa and IL-6),oxidant stress markers(MDA and NO)and cellular enzyme(AST,ALT and ALP)levels versus arthritic rats without treatment.Moreover,PCP restored the decreased levels of SOD,CAT and GSH.Conclusion:Our results suggest that the anti-arthritic properties of PCP may be due to immunosuppressive effects,cytokine regulation,antioxidant effects and bone-protective activities.
基金This study is subsidized by Chinese National Natural Science Foundation [Key Research Project (90209009) ]Hubei Natural Science Foundation (2002AB124)Foundation for Scientific Research of Huazhong University of Science and Technology
基金Supported by the National Natural Science Foundation of China(NSFC),grant number:81330088,81303025
文摘Pain is a global problem and has been found sensitive to acupuncture. A large number of existing and newly published studies have demonstrated the analgesic effect of electroacupuncture(EA) in complete Freund's adjuvant(CFA) rat model, necessitating a new and comprehensive review. To evaluate the curative effect of EA on thermal hyperalgesia in CFA rats, and to explore parameters that influence treatment effects, studies of EA treatment on thermal hyperalgesia of CFA rat model were identified from nine databases up to June 17, 2017. Outcome measure was heat pain threshold. All the data were analyzed using Stata 14.0/MP software. 26 studies identified included 801 rats. The quality score of the studies ranged from 3 to 6, with a mean of 4.08. The effect of EA group was improvement in outcome compared with CFA group. In subgroup analyses, frequency 2, 100, 2/100 or 20-100 Hz. acupoint Huántiào(环跳GB30),Kūnlún(昆仑 BL60) +Xuánzhōng(悬钟 GB39), Zúsānlī(足三里 ST36) +BL60 or ST36+Sānyīnjiāo(三阴交SP6), retention time 20 or 30 min, treatment time for post-CFA injection immediately, the same day as CFA injection, post-CFA injection 24 or 48 h and interval 24 or 48 h all can improve the effect on CFA rat heat pain threshold. These results show that there is positive effective of EA in CFA-induced pain,different parameters have different effects on EA treatment of CFA heat hyperalgesia, however, because of the number of eligible researches and the high risk of bias, the evidence supporting this conclusion is limited.
文摘Objective:To establish a collagen type II-induced rat model of rheumatoid arthritis(RA)presenting characteristics of the human form of the traditional Chinese syndrome pattern of toxic heat-stasis painful obstruction(bi zheng;arthromyodynia)as well as pathologic features of active RA.The Chinese herbal medicine Tengmei decoction was used to validate the animal model.Methods:Ninety specific pathogen free Sprague-Dawley rats were randomly divided into a normal group of 6 rats and a model group of 84 rats.To establish the rat model of collageninduced arthritis(CIA),bovine type II collagen in complete Freund’s adjuvant was injected into the model group rats as a priming dose(Day 0)and boosting dose(Day 9).Changes in arthritic index(AI)scores,including limb swelling,were monitored.Thereafter,24 successfullyestablished CIA rats were randomly assigned to 4 groups with 6 animals each:model,positive control drug,high-dose traditional Chinese herbal medicine,and traditional Chinese herbal medicine.A blank control group of 6 rats was included.After 12 weeks of intervention with Tengmei decoction,articular synovial tissue and serum specimens were collected to detect interleukin-2(IL-2)and IL-17 transcription and protein expression levels.
文摘Objective:To evaluate the anti-arthritic effect of aqueous and methanolic extracts of Distemonanthus benthamianus.Methods:Monoarthritis was induced by an injection of 0.3 mL zymosan A(0.9%NaCl,v/v)in the right posterior knee joints of rats.Then,joint diameter and pain threshold were determined.Polyarthritis was induced by an intracaudal injection of complete Freund’s adjuvant and rats were treated from day 14 post 1st complete Freund’s adjuvant injection until 28 day.The clinical,hematological,biochemical and oxidative stress parameters were evaluated.In addition,histological analysis of the knee joint was perfomed in both tests.Results:The aqueous and methanolic extracts of Distemonanthus benthamianus at a dose of 500 mg/kg ameliorated zymosan A-induced monoarthritis,as evidenced by reduced joint diameter,increased pain threshold,as well as improved joint architecture.In addition,both extracts of Distemonanthus benthamianus markedly increased body weight and pain threshold,while reducing paw edema in polyarthritic rats.They also led to a marked decrease in platelets and white blood cells(P<0.05),as well as a significant increase in red blood cells,hemoglobin and hematocrit(P<0.05).The aqueous and methanolic extracts of Distemonanthus benthamianus significantly reduced alanine aminotransferase,aspartate aminotransferase,alkaline phosphatase activities,while increasing serum protein levels(P<0.05)with no significant variation in creatinine level.Moreover,both extracts increased catalase and glutathione activities(P<0.05),and inhibited malondialdehyde and nitric oxide production(P<0.01 and P<0.001)in the liver and kidneys.Histological analysis of the joints showed that both extracts triggered tissue reparation.Conclusions:Distemonanthus benthamianus could be used as a potential candidate in the treatment of rheumatoid arthritis.
文摘目的利用完全弗氏佐剂(CFA)建立雌性SD大鼠类风湿关节炎(RA)模型,并考察不同给药方式的塞来昔布对RA的治疗效果。方法将24只雌性SD大鼠随机分成正常对照组和低、中、高剂量模型组(n=6),低、中、高剂量模型组分别用0.05、0.1、0.2 mL CFA(10 mg/mL)于大鼠右后肢足跖部注射诱导构建RA模型,筛选出合适的剂量。另取24只雌性SD大鼠分为正常对照组、模型对照组、塞来昔布口服组、塞来昔布注射组(n=6),后3组利用最佳致炎剂量CFA建立RA模型。塞来昔布口服组给予市售塞来昔布胶囊,每天灌胃1次,每次20 mg;塞来昔布注射组给予用原料药配制的塞来昔布混悬液,每周于大鼠右后肢足跖部注射给药1次,剂量20 mg/kg。测量各组大鼠足容积,并进行临床评分。通过ELISA检测各组大鼠血清中3种炎症因子(IL-1β、IL-6、TNF-α)的浓度,取大鼠踝关节组织进行H-E染色以观察组织病变情况。结果在雌性SD大鼠中,足跖部注射0.1 mL CFA(10 mg/mL)可较好地模拟RA中度炎症反应,注射CFA后逐渐出现足爪红肿,全身临床评分及足部关节炎指数评分均有升高,炎症高峰期在免疫后19 d。塞来昔布口服组和注射组足容积较模型对照组减小(P均<0.05),全身临床评分及足部关节炎指数评分均较模型对照组降低(P均<0.01),血清IL-1β、IL-6、TNF-α浓度均较模型对照组降低(P均<0.05),踝关节组织病理改变均较模型对照组减轻;其中塞来昔布注射组的全身临床评分及足部关节炎指数评分低于口服组(P均<0.05),踝关节组织病理改变轻于口服组。结论足跖部注射0.1 mL CFA(10 mg/mL)可致SD雌性大鼠中度炎症反应,能较好地模拟RA的病理过程。每周经足跖部注射1次塞来昔布混悬液对模型大鼠RA的疗效优于每天口服1次塞来昔布。
文摘Enicostemma littorale (Blume), the folk medicine is used for rheumatic pain and it was selected for scientific validation. The 85% methanolic extract obtained from the whole plant of Enicostemma littorale has been assessed for analgesic and anti-inflammatory activity. The analgesic activity has been evaluated by hot plate and tail immersion method and the anti-inflammatory and antioxidant activities are evaluated by Complete Freund’s adjuvant induced arthritic model. The results of the evaluation of analgesic activity in hot plate and tail immersion method revealed that the extract exhibits significant activity at 150 mg/kg body weight and the effect is found to increase dose dependently. In Freund’s adjuvant induced arthritis, Enicostemma littorale is found to decrease the paw volume (15.81%). Significant protection is also observed by elevating antioxidant enzymes. In conclusion, the 85% methanolic extract of Enicostemma littorale possesses significant analgesic and anti-inflammatory activities in Freund’s adjuvant induced arthritic model in rats.
文摘Rheumatoid arthritis (RA) is a common form of chronic inflammatory arthritis, and it mainly causes the destruction of small joints. The development of this disease is a relatively secret and repeated process, and therefore early diagnosis and evaluation of the disease is usually difficult. In this study, an arthritis model was successfully induced by injecting complete Freund’s adjuvant (CFA) into the toes of lower limbs of Wistar rats. Seven days after injection of CFA, obvious redness and swelling appeared at the toe joints of lower limbs accompanied by more sensitivity to thermal stimulation. Using the ultraweak bio-photon imaging system (UBIS) established by us, the toe joint area of the lower limbs of rats was imaged 7 days after injection of CFA. It was found that the volar part of lower limbs of arthritis rats showed significantly higher biophoton emissions compared with the control group. The results of this study may provide a basis for further research and devel-opment of early diagnosis and assessment of lesion progression of rheumatoid arthritis.