F-2 toxin is an estrogenic mycotoxin that causes reproductive disorders in animals.Betulinic acid(BA)is a natural pentacyclic lupane-structure triterpenoid that has diverse pharmacological activities.In this study,the...F-2 toxin is an estrogenic mycotoxin that causes reproductive disorders in animals.Betulinic acid(BA)is a natural pentacyclic lupane-structure triterpenoid that has diverse pharmacological activities.In this study,the antioxidative and anti-inflammatory effects of BA and its underlying mechanism are explored in F-2 toxin-triggered mouse ovarian damage.We found that BA alleviated the F-2 toxin-induced ovarian impairment by stimulating follicle growth,reducing inflammatory cell infiltration,repairing damaged mitochondria and endoplasmic reticulum.Simultaneously,BA not only reversed F-2 toxin-induced reduction of follicle stimulating hormone(FSH)and luteinizing hormone(LH)levels in the serum,but also restrained the protein expression of the estrogen receptors a(ERa)and ERβ.Moreover,BA restored the balance of F-2 toxin-induced ovarian redox system disorders.Subsequently,we found that 0.25 mg/kg BA played an anti-inflammatory role in the F-2 toxin-induced ovarian impairment by decreasing interleukin-1β(IL-1β).IL-6,and tumor necrosis factor-α(TNF-α)mRNA expression,as well as inhibiting p38 protein expression.These data demonstrated that BA exerts its protective effect on F-2 toxin-induced ovarian oxidative impairment and inflammation by inhibiting p38 expression,which implies a natural product-based medicine to ameliorate F-2 toxin-caused female reproductive toxicity and provides a detoxifying method for food contaminated by mycotoxin.展开更多
Mucosal vaccination has been getting more and more recognition because of its compliance and low risk of spreading infectious disease by contaminated syringes used in subcutaneous immunization. However, most vaccines ...Mucosal vaccination has been getting more and more recognition because of its compliance and low risk of spreading infectious disease by contaminated syringes used in subcutaneous immunization. However, most vaccines are unable to induce immune responses when given mucosally, and require the use of strong adjuvant for effective delivery systems. Heat-labile enterotoxin (LT) and Cholera toxin(CT) are powerful mucosal adjuvants when co-administered with soluble antigens. But high toxicity hampers their use in humans. Thanks to the fine knowledge of the structure-function relationship of LT and CT, many nontoxic or low toxic mutants have been generated, part of them retain high adjuvanticity of mucosal immunization. Among these mutants, LTS63K, LTA72R, LTR192G and CTE29H, CTE112K have been widely investigated. LTS63K and CTE112K are fully non toxic, whereas LTA72R and CTE29H are low toxic, and LTR192G is nontoxic in vitro(it remains the same toxicity as wild type LT in vivo). These mutants are extremely active as mucosal adjuvants when co-administrated with a variety of antigens in different animal models. They will be investigated more widely and deeply in the future. Some of them will be tested soon in human bodies.展开更多
Background: T-2 toxin poses a great threat to human health because it has the highest toxicity of the currently known trichothecene mycotoxins. To understand the in vivo toxicity and transformation mechanism of T-2 to...Background: T-2 toxin poses a great threat to human health because it has the highest toxicity of the currently known trichothecene mycotoxins. To understand the in vivo toxicity and transformation mechanism of T-2 toxin, we investigated the role of two principal phase Ⅰ drug-metabolizing enzymes(cytochrome P450 [CYP450] enzymes) on the metabolism of T-2 toxin, which are crucial to the metabolism of endogenous substances and xenobiotics. We also investigated carboxylesterase, which also plays an important role in the metabolism of toxic substances.Methods: A chemical inhibition method and a recombinant method were employed to investigate the metabolism of the T-2 toxin by the CYP450 enzymes, and a chemical inhibition method was used to study carboxylesterase metabolism. Samples incubated with human liver microsomes were analyzed by high performance liquid chromatography-triple quadrupole mass spectrometry(HPLC- Qq Q MS) after a simple pretreatment.Results: In the presence of a carboxylesterase inhibitor, only 20% T-2 toxin was metabolized. When CYP enzyme inhibitors and a carboxylesterase inhibitor were both present, only 3% of the T-2 toxin was metabolized. The contributions of the CYP450 enzyme family to T-2 toxin metabolism followed the descending order CYP3A4, CYP2E1, CYP1A2, CYP2B6 or CYP2D6 or CYP2C19.Conclusions: Carboxylesterase and CYP450 enzymes are of great importance in T-2 toxin metabolism, in which carboxylesterase is predominant and CYP450 has a subordinate role. CYP3A4 is the principal member of the CYP450 enzyme family responsible for T-2 toxin metabolism. The metabolite produced by carboxylesterase is HT-2, and the metabolite produced by CYP 3A4 is 3'-OH T-2. The different metabolites show different toxicities. Our results will provide useful data concerning the toxic mechanism, the safety evaluation, and the health risk assessment of T-2 toxin.展开更多
Objective To evaluate efficacy and safety of botulinum toxin type B (BTX-B) in treatment of movement disorders including blepharospasm, oromandibular dystonia, hemifacial spasm, tremor, tics, and hypersecretory disord...Objective To evaluate efficacy and safety of botulinum toxin type B (BTX-B) in treatment of movement disorders including blepharospasm, oromandibular dystonia, hemifacial spasm, tremor, tics, and hypersecretory disorders such as sia-lorrhea and hyperhidrosis. Methods A retrospective study of BTX-B injections in treatment of 58 patients with various neurological disorders was performed. The mean follow-up time was 0.9 ± 0.8 years. Results of the first and last treatment of patients with at least 3 injection sessions were compared. Results The response of 58 patients to a total of 157 BTX-B treatment sessions was analyzed. Of the 157 treatment sessions, 120 sessions (76.4%) resulted in moderate or marked improvement while 17 sessions (10.8%) had no response. The clinical benefits after BTX-B treatment lasted an average of 14 weeks. Of the 41 patients with at least 3 injection ses-sions (mean 10 ± 8.6), most patients needed increased dosage upon the last session compared to the first session. Nineteen patients (32.8%) with 27 sessions (17.2%) reported adverse effects with BTX-B treatment. Conclusions Though most patients require increased dosage to maintain effective response after repeated injections, BTX-B is an effective and safe treatment drug for a variety of movement disorders, as well as drooling and hyperhidrosis.展开更多
Objective.To introduce the properties of Chinese type A botulinum toxin(CBTXA,made by Lanzhou Institute of Biological Products),and its long?term effect for focal dystonia and hemifacial spasm.Method.The purity and re...Objective.To introduce the properties of Chinese type A botulinum toxin(CBTXA,made by Lanzhou Institute of Biological Products),and its long?term effect for focal dystonia and hemifacial spasm.Method.The purity and recovery of crude and crystalline toxin were tested.Long?term data from305patients with hemifacial spasm(HFS),blepharospasm(BS)and cervical dystonia(CD)were evalu-ated and subgroups of patients received CBTXA injections between1994and2000in at least six sepa-rate treatment sessions,with follow up for2～8years.The therapeutic results of the last session CBTXA injections were analyzed in comparison with the first session.Result.CBTXA purity was high[(2.55～2.60)×10 7 LD50/mgPr ,A260/A280≤0.55,high molecular substance accounted for99.2%of total proteins].Long term treatment with CBTXA in patients with focal dystonia and HFS was not associated with any decline in benefit,and efficacy may improve slightly with repeat treatments.CBTXA is an excellent long-term treatment of HFS,BS and CD.Conclusion.We conclude that Chinese type A botulinum toxin is of botulinum toxin therapy quality standard according to results obtained from the basic study and long?term clinical applications.The re?injection of CBTXA significantly improves the quality of life of most patients and is a safe,effective and comparatively economical treatment for patients with focal dystonia and HFS.展开更多
Nutriology relies on advanced analytical tools to study the molecular compositions of food and provide key information on sample quality/safety. Small nutrients detection is challenging due to the high diversity and b...Nutriology relies on advanced analytical tools to study the molecular compositions of food and provide key information on sample quality/safety. Small nutrients detection is challenging due to the high diversity and broad dynamic range of molecules in food samples, and a further issue is to track low abundance toxins. Herein, we developed a novel plasmonic matrix-assisted laser desorption/ionization mass spectrometry(MALDI MS)approach to detect small nutrients and toxins in complex biological emulsion samples. Silver nanoshells(SiO_2@-Ag) with optimized structures were used as matrices andachieved direct analysis of ~ 6 n L of human breast milk without any enrichment or separation. We performed identification and quantitation of small nutrients and toxins with limit-of-detection down to 0.4 pmol(for melamine) and reaction time shortened to minutes, which is superior to the conventional biochemical method currently in use. The developed approach contributes to the near-future application of MALDI MS in a broad field and personalized design of plasmonic materials for real-case bio-analysis.展开更多
Objective The experiment is to study the protective effects of Xinkang Injection on ADR-induced toxin myocarditisin mice.Methods The test of Xinkang Injection on ADR-induced toxin myocarditisin mice.Firstly,the animal...Objective The experiment is to study the protective effects of Xinkang Injection on ADR-induced toxin myocarditisin mice.Methods The test of Xinkang Injection on ADR-induced toxin myocarditisin mice.Firstly,the animal of obnormal,weight and death rate.Secondly,the influnences of cardiogram of ADR-induced toxin myocarditisin mice.Thirdly,the influnences of lactate dehydrogenase(LDH),creatine kinase(CK)and glutamic oxaloacetic transaminasw(GOT)of ADR-induced toxin myocarditisin mice.Fouthly,the influnences of changes of cardioc pathological mechanism of ADR-induced toxin myocarditisin mice.Fifthly,the influnces of the caidioc ultrastructural of ADR-induced toxin myocarditisin mice.Results Firstly,to ADR-induced toxin myocarditisin mice,the weight of middle dose and high dose of Xinkang injection had declined obviosly which contrast with the constraction model mice team.In the mean time,the weight of Xinkang injection team had obviosly changde which contrast with contrastion mice team(P<0.01).Secondly,to ADR-induced toxin myocarditisin mice,the middle dose and high dose of Xinkang injection have obviosly withstand Q abnormal cardiogram,in the meantime,Xinkang injection team had obviosly changde contrast with the contrastion model mice(P<0.01).Thirdly,to ADR-induced toxin myocarditisin mice,The activity of lactate dehydrogenase(LDH),creatine kinase(CK)and glutamic oxaloacetic transaminasw(GOT)were differently measured.The middle dose and high dose of Xinkang injection team can obviously declined the activity of LDH and CK(P<0.01).Fouthly,to ADR-induced toxin myocarditisin mice,the low dose,the middle dose and high dose of Xinkang injection team can contrast with injured on toxic myocarditisin mice cardioc.Fifthly,to ADR-induced toxin myocarditisin mice,the low dose,the middle dose and high dose of Xinkang injection team have effect of allevite the injection of the cardioc ulteasteuctural of ADR-induced toxin myocarditisin mice.Conclusions Xinkang injection can protect the ADR-induced toxin myocarditisin mice.展开更多
Objective:To observe the effects of the recombinant chimeric toxin Dsg3EC 1-2PE40 on T and B lymphocytes isolated from Pemphigus Vulgaris (PV) patients to further study its biological therapeutic function for PV. Meth...Objective:To observe the effects of the recombinant chimeric toxin Dsg3EC 1-2PE40 on T and B lymphocytes isolated from Pemphigus Vulgaris (PV) patients to further study its biological therapeutic function for PV. Methods:Recombinant chimeric toxin Dsg3EC 1-2PE40 was first identified, expressed and purified, and then its effects on T and B lymphocytes of PV patients in vitro were detected and quantified by ELISPOT assay and MTT assay.Results:The purity of the expressed protein Dsg3EC 1-2PE40 was up to 80%. In ELISPOT assay, with Dsg3EC 1-2PE40, the overall number of B cells that produce anti-Dsg3 antibodies among PV patients was only about 60% of the comparable number with Dsg3EC 1-2. The proliferation of T cells of PV patients was inhibited markedly by Dsg3EC 1-2PE40. There was significant difference between the different groups with Dsg3EC 1-2PE40 and Dsg3EC 1-2.Conclusion:The recombinant chimeric toxin Dsg3EC 1-2PE40 decrease the number of B cells that produce anti-Dsg3 antibodies in PV patients and can inhibit or kill T cells of PV patients in vitro.展开更多
目的:观察化瘀解毒汤对瘀毒内阻型脓毒症患者相关炎症指标及肠道菌群的影响。方法:将瘀毒内阻型脓毒症患者120例,随机分为对照组和观察组,每组60例。对照组予氢化可的松治疗,观察组在对照组基础上予化瘀解毒汤内服治疗,两组均连续治疗7...目的:观察化瘀解毒汤对瘀毒内阻型脓毒症患者相关炎症指标及肠道菌群的影响。方法:将瘀毒内阻型脓毒症患者120例,随机分为对照组和观察组,每组60例。对照组予氢化可的松治疗,观察组在对照组基础上予化瘀解毒汤内服治疗,两组均连续治疗7天。比较两组急性生理学及慢性健康状况评分(acute physiological and chronic health scores,APACHEⅡ)、血清肿瘤坏死因子α(tumor necrosis factorα,TNF-α)、白细胞介素6(interleukin-6,IL-6)表达水平,并比较患者肠道菌群改变情况、临床疗效和不良反应发生情况。结果:治疗后,两组患者APACHEⅡ评分及血清IL-6与TNF-α表达水平均降低,且观察组降低程度大于对照组(P<0.05);乳酸杆菌、双歧杆菌数量均明显增加(P<0.05),而肠杆菌、肠球菌数量明显减少(P<0.05),且观察组上述菌群数量增加或降低程度大于对照组(P<0.05);总有效率观察组[95.00%(57/60)]高于对照组[80.00%(48/60)](P<0.05);不良反应发生率观察组为8.33%(5/60),对照组为10.00%(6/60),差异无统计学意义(P>0.05)。结论:在西医常规治疗的基础上以化瘀解毒汤治疗瘀毒内阻型脓毒症患者,能够有效控制病情进展,减轻炎症反应,改善肠道菌群失调,提高疗效,且安全性好。展开更多
基金supported by the National Natural Science Foundation of China (32273084)the Special Funds for Construction of Innovative Provinces in Hunan Province,China (2020NK2032)+2 种基金the Natural Science Foundation of Hunan Province,China (2020JJ4368)Innovation Foundation for Postgraduate of Hunan Province,China (CX20220670)Innovation Foundation for Postgraduate of Hunan Agricultural University,China (2022XC010)。
文摘F-2 toxin is an estrogenic mycotoxin that causes reproductive disorders in animals.Betulinic acid(BA)is a natural pentacyclic lupane-structure triterpenoid that has diverse pharmacological activities.In this study,the antioxidative and anti-inflammatory effects of BA and its underlying mechanism are explored in F-2 toxin-triggered mouse ovarian damage.We found that BA alleviated the F-2 toxin-induced ovarian impairment by stimulating follicle growth,reducing inflammatory cell infiltration,repairing damaged mitochondria and endoplasmic reticulum.Simultaneously,BA not only reversed F-2 toxin-induced reduction of follicle stimulating hormone(FSH)and luteinizing hormone(LH)levels in the serum,but also restrained the protein expression of the estrogen receptors a(ERa)and ERβ.Moreover,BA restored the balance of F-2 toxin-induced ovarian redox system disorders.Subsequently,we found that 0.25 mg/kg BA played an anti-inflammatory role in the F-2 toxin-induced ovarian impairment by decreasing interleukin-1β(IL-1β).IL-6,and tumor necrosis factor-α(TNF-α)mRNA expression,as well as inhibiting p38 protein expression.These data demonstrated that BA exerts its protective effect on F-2 toxin-induced ovarian oxidative impairment and inflammation by inhibiting p38 expression,which implies a natural product-based medicine to ameliorate F-2 toxin-caused female reproductive toxicity and provides a detoxifying method for food contaminated by mycotoxin.
文摘Mucosal vaccination has been getting more and more recognition because of its compliance and low risk of spreading infectious disease by contaminated syringes used in subcutaneous immunization. However, most vaccines are unable to induce immune responses when given mucosally, and require the use of strong adjuvant for effective delivery systems. Heat-labile enterotoxin (LT) and Cholera toxin(CT) are powerful mucosal adjuvants when co-administered with soluble antigens. But high toxicity hampers their use in humans. Thanks to the fine knowledge of the structure-function relationship of LT and CT, many nontoxic or low toxic mutants have been generated, part of them retain high adjuvanticity of mucosal immunization. Among these mutants, LTS63K, LTA72R, LTR192G and CTE29H, CTE112K have been widely investigated. LTS63K and CTE112K are fully non toxic, whereas LTA72R and CTE29H are low toxic, and LTR192G is nontoxic in vitro(it remains the same toxicity as wild type LT in vivo). These mutants are extremely active as mucosal adjuvants when co-administrated with a variety of antigens in different animal models. They will be investigated more widely and deeply in the future. Some of them will be tested soon in human bodies.
基金supported by the Key Projects in the National Science & Technology Pillar Program of China (2011BAK10B07)the National Major Special Projects in the Ministry of Science and Technology of China (2012 2X09301003-001-010)
文摘Background: T-2 toxin poses a great threat to human health because it has the highest toxicity of the currently known trichothecene mycotoxins. To understand the in vivo toxicity and transformation mechanism of T-2 toxin, we investigated the role of two principal phase Ⅰ drug-metabolizing enzymes(cytochrome P450 [CYP450] enzymes) on the metabolism of T-2 toxin, which are crucial to the metabolism of endogenous substances and xenobiotics. We also investigated carboxylesterase, which also plays an important role in the metabolism of toxic substances.Methods: A chemical inhibition method and a recombinant method were employed to investigate the metabolism of the T-2 toxin by the CYP450 enzymes, and a chemical inhibition method was used to study carboxylesterase metabolism. Samples incubated with human liver microsomes were analyzed by high performance liquid chromatography-triple quadrupole mass spectrometry(HPLC- Qq Q MS) after a simple pretreatment.Results: In the presence of a carboxylesterase inhibitor, only 20% T-2 toxin was metabolized. When CYP enzyme inhibitors and a carboxylesterase inhibitor were both present, only 3% of the T-2 toxin was metabolized. The contributions of the CYP450 enzyme family to T-2 toxin metabolism followed the descending order CYP3A4, CYP2E1, CYP1A2, CYP2B6 or CYP2D6 or CYP2C19.Conclusions: Carboxylesterase and CYP450 enzymes are of great importance in T-2 toxin metabolism, in which carboxylesterase is predominant and CYP450 has a subordinate role. CYP3A4 is the principal member of the CYP450 enzyme family responsible for T-2 toxin metabolism. The metabolite produced by carboxylesterase is HT-2, and the metabolite produced by CYP 3A4 is 3'-OH T-2. The different metabolites show different toxicities. Our results will provide useful data concerning the toxic mechanism, the safety evaluation, and the health risk assessment of T-2 toxin.
文摘Objective To evaluate efficacy and safety of botulinum toxin type B (BTX-B) in treatment of movement disorders including blepharospasm, oromandibular dystonia, hemifacial spasm, tremor, tics, and hypersecretory disorders such as sia-lorrhea and hyperhidrosis. Methods A retrospective study of BTX-B injections in treatment of 58 patients with various neurological disorders was performed. The mean follow-up time was 0.9 ± 0.8 years. Results of the first and last treatment of patients with at least 3 injection sessions were compared. Results The response of 58 patients to a total of 157 BTX-B treatment sessions was analyzed. Of the 157 treatment sessions, 120 sessions (76.4%) resulted in moderate or marked improvement while 17 sessions (10.8%) had no response. The clinical benefits after BTX-B treatment lasted an average of 14 weeks. Of the 41 patients with at least 3 injection ses-sions (mean 10 ± 8.6), most patients needed increased dosage upon the last session compared to the first session. Nineteen patients (32.8%) with 27 sessions (17.2%) reported adverse effects with BTX-B treatment. Conclusions Though most patients require increased dosage to maintain effective response after repeated injections, BTX-B is an effective and safe treatment drug for a variety of movement disorders, as well as drooling and hyperhidrosis.
文摘Objective.To introduce the properties of Chinese type A botulinum toxin(CBTXA,made by Lanzhou Institute of Biological Products),and its long?term effect for focal dystonia and hemifacial spasm.Method.The purity and recovery of crude and crystalline toxin were tested.Long?term data from305patients with hemifacial spasm(HFS),blepharospasm(BS)and cervical dystonia(CD)were evalu-ated and subgroups of patients received CBTXA injections between1994and2000in at least six sepa-rate treatment sessions,with follow up for2～8years.The therapeutic results of the last session CBTXA injections were analyzed in comparison with the first session.Result.CBTXA purity was high[(2.55～2.60)×10 7 LD50/mgPr ,A260/A280≤0.55,high molecular substance accounted for99.2%of total proteins].Long term treatment with CBTXA in patients with focal dystonia and HFS was not associated with any decline in benefit,and efficacy may improve slightly with repeat treatments.CBTXA is an excellent long-term treatment of HFS,BS and CD.Conclusion.We conclude that Chinese type A botulinum toxin is of botulinum toxin therapy quality standard according to results obtained from the basic study and long?term clinical applications.The re?injection of CBTXA significantly improves the quality of life of most patients and is a safe,effective and comparatively economical treatment for patients with focal dystonia and HFS.
基金the financial support from Project 81771983, 81750110544, 81750410695, 81650110523, and 81471096 (to LXQ) by National Natural Science Foundation of China (NSFC)Project 16441909300 by Shanghai Science and Technology Commission+2 种基金Project 2017YFC0909000 by Ministry of Science and Technology of Chinasponsored by the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning (TP2015015)supported by 14DZ2272400 Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition (to WC)
文摘Nutriology relies on advanced analytical tools to study the molecular compositions of food and provide key information on sample quality/safety. Small nutrients detection is challenging due to the high diversity and broad dynamic range of molecules in food samples, and a further issue is to track low abundance toxins. Herein, we developed a novel plasmonic matrix-assisted laser desorption/ionization mass spectrometry(MALDI MS)approach to detect small nutrients and toxins in complex biological emulsion samples. Silver nanoshells(SiO_2@-Ag) with optimized structures were used as matrices andachieved direct analysis of ~ 6 n L of human breast milk without any enrichment or separation. We performed identification and quantitation of small nutrients and toxins with limit-of-detection down to 0.4 pmol(for melamine) and reaction time shortened to minutes, which is superior to the conventional biochemical method currently in use. The developed approach contributes to the near-future application of MALDI MS in a broad field and personalized design of plasmonic materials for real-case bio-analysis.
文摘Objective The experiment is to study the protective effects of Xinkang Injection on ADR-induced toxin myocarditisin mice.Methods The test of Xinkang Injection on ADR-induced toxin myocarditisin mice.Firstly,the animal of obnormal,weight and death rate.Secondly,the influnences of cardiogram of ADR-induced toxin myocarditisin mice.Thirdly,the influnences of lactate dehydrogenase(LDH),creatine kinase(CK)and glutamic oxaloacetic transaminasw(GOT)of ADR-induced toxin myocarditisin mice.Fouthly,the influnences of changes of cardioc pathological mechanism of ADR-induced toxin myocarditisin mice.Fifthly,the influnces of the caidioc ultrastructural of ADR-induced toxin myocarditisin mice.Results Firstly,to ADR-induced toxin myocarditisin mice,the weight of middle dose and high dose of Xinkang injection had declined obviosly which contrast with the constraction model mice team.In the mean time,the weight of Xinkang injection team had obviosly changde which contrast with contrastion mice team(P<0.01).Secondly,to ADR-induced toxin myocarditisin mice,the middle dose and high dose of Xinkang injection have obviosly withstand Q abnormal cardiogram,in the meantime,Xinkang injection team had obviosly changde contrast with the contrastion model mice(P<0.01).Thirdly,to ADR-induced toxin myocarditisin mice,The activity of lactate dehydrogenase(LDH),creatine kinase(CK)and glutamic oxaloacetic transaminasw(GOT)were differently measured.The middle dose and high dose of Xinkang injection team can obviously declined the activity of LDH and CK(P<0.01).Fouthly,to ADR-induced toxin myocarditisin mice,the low dose,the middle dose and high dose of Xinkang injection team can contrast with injured on toxic myocarditisin mice cardioc.Fifthly,to ADR-induced toxin myocarditisin mice,the low dose,the middle dose and high dose of Xinkang injection team have effect of allevite the injection of the cardioc ulteasteuctural of ADR-induced toxin myocarditisin mice.Conclusions Xinkang injection can protect the ADR-induced toxin myocarditisin mice.
文摘Objective:To observe the effects of the recombinant chimeric toxin Dsg3EC 1-2PE40 on T and B lymphocytes isolated from Pemphigus Vulgaris (PV) patients to further study its biological therapeutic function for PV. Methods:Recombinant chimeric toxin Dsg3EC 1-2PE40 was first identified, expressed and purified, and then its effects on T and B lymphocytes of PV patients in vitro were detected and quantified by ELISPOT assay and MTT assay.Results:The purity of the expressed protein Dsg3EC 1-2PE40 was up to 80%. In ELISPOT assay, with Dsg3EC 1-2PE40, the overall number of B cells that produce anti-Dsg3 antibodies among PV patients was only about 60% of the comparable number with Dsg3EC 1-2. The proliferation of T cells of PV patients was inhibited markedly by Dsg3EC 1-2PE40. There was significant difference between the different groups with Dsg3EC 1-2PE40 and Dsg3EC 1-2.Conclusion:The recombinant chimeric toxin Dsg3EC 1-2PE40 decrease the number of B cells that produce anti-Dsg3 antibodies in PV patients and can inhibit or kill T cells of PV patients in vitro.
文摘目的:观察化瘀解毒汤对瘀毒内阻型脓毒症患者相关炎症指标及肠道菌群的影响。方法:将瘀毒内阻型脓毒症患者120例,随机分为对照组和观察组,每组60例。对照组予氢化可的松治疗,观察组在对照组基础上予化瘀解毒汤内服治疗,两组均连续治疗7天。比较两组急性生理学及慢性健康状况评分(acute physiological and chronic health scores,APACHEⅡ)、血清肿瘤坏死因子α(tumor necrosis factorα,TNF-α)、白细胞介素6(interleukin-6,IL-6)表达水平,并比较患者肠道菌群改变情况、临床疗效和不良反应发生情况。结果:治疗后,两组患者APACHEⅡ评分及血清IL-6与TNF-α表达水平均降低,且观察组降低程度大于对照组(P<0.05);乳酸杆菌、双歧杆菌数量均明显增加(P<0.05),而肠杆菌、肠球菌数量明显减少(P<0.05),且观察组上述菌群数量增加或降低程度大于对照组(P<0.05);总有效率观察组[95.00%(57/60)]高于对照组[80.00%(48/60)](P<0.05);不良反应发生率观察组为8.33%(5/60),对照组为10.00%(6/60),差异无统计学意义(P>0.05)。结论:在西医常规治疗的基础上以化瘀解毒汤治疗瘀毒内阻型脓毒症患者,能够有效控制病情进展,减轻炎症反应,改善肠道菌群失调,提高疗效,且安全性好。
