AIM: To assess corticotropin-releasing factor receptor 2 (CRF 2 ) expression in the colon of healthy subjects and patients with ulcerative colitis (UC). METHODS: We examined CRF2 gene and protein expression in the dis...AIM: To assess corticotropin-releasing factor receptor 2 (CRF 2 ) expression in the colon of healthy subjects and patients with ulcerative colitis (UC). METHODS: We examined CRF2 gene and protein expression in the distal/sigmoid colonic mucosal biopsies from healthy subjects and patients with UC (active or disease in remission), human immunodeficiency virus (HIV) and functional bowel disease (FBD) by reverse transcriptionpolymerase chain reaction and immunofluorescence. RESULTS: Gene expression of CRF2 was demonstrated in the normal human colonic biopsies, but not in the human colorectal adenocarcinoma cell line Caco2. Receptor protein localization showed immunoreactive CRF 2 receptors in the lamina propria and in the epithelial cells of the distal/sigmoid biopsy samples. Interestingly, CRF 2 immunoreactivity was no longer observed in epithelial cells of patients with mild-moderately active UC and disease in remission, while receptor protein expression did not change in the lamina propria. No differences in CRF 2 expression profile were observed in distal/sigmoid intestinal biopsies from HIV infection and FBD patients, showing no signs of inflammation. CONCLUSION: The down-regulation of the CRF2 receptor in the distal/sigmoid biopsies of UC patients is indicative of change in CRF 2 signalling associated with the process of inflammation.展开更多
To assess the merits of PEGylated poly （lactic-co-glycolic acid） （PEG-PLGA） nanoparticles as drug carriers for tumor necrosis factor-α receptor blocking peptide （TNFR-BP）, PEG-PLGA copolymer, which could be use...To assess the merits of PEGylated poly （lactic-co-glycolic acid） （PEG-PLGA） nanoparticles as drug carriers for tumor necrosis factor-α receptor blocking peptide （TNFR-BP）, PEG-PLGA copolymer, which could be used to prepare the stealth nanoparticles, was synthesized with methoxypolyethyleneglycol, DL-lactide and glycolide. The structure of PEG-PLGA was confirmed with ^1H-NMR and FT-IR spectroscopy, and the molecular weight （MW） was determined by gel permeation chromatography. Fluorescent FITC-TNFR- BP was chosen as model protein and encapsulated within PEG-PLGA nanoparticles using the double emulsion method. Atomic force microscopy and photon correlation spectroscopy were employed to characterize the stealth nanoparticles fabricated for morphology, size with polydispersity index and zeta potential. Encapsulation efficiency （EE） and the release of FITC-TNFR-BP in nanopartieles in vitro were measured by the fluorescence measurement. The stealth nanoparticles were found to have the mean diameter less than 270 nm and zeta potential less than -20 mV. In all nanoparticle formulations, more than 45% of EE were obtained. FITC-TNFR-BP release from the PEG-PLGA nanoparticles exhibited a biphasic pattern, initial burst release and consequently sustained release. The experimental results show that PEG-PLGA nanoparticles possess the potential to develop as drug carriers for controlled release applications of TNFR-BP.展开更多
During the development of the nervous system,there is an overproduction of neurons and synapses.Hebbian competition between neighboring nerve endings and synapses performing different activity levels leads to their el...During the development of the nervous system,there is an overproduction of neurons and synapses.Hebbian competition between neighboring nerve endings and synapses performing different activity levels leads to their elimination or strengthening.We have extensively studied the involvement of the brain-derived neurotrophic factor-Tropomyosin-related kinase B receptor neurotrophic retrograde pathway,at the neuromuscular junction,in the axonal development and synapse elimination process versus the synapse consolidation.The purpose of this review is to describe the neurotrophic influence on developmental synapse elimination,in relation to other molecular pathways that we and others have found to regulate this process.In particular,we summarize our published results based on transmitter release analysis and axonal counts to show the different involvement of the presynaptic acetylcholine muscarinic autoreceptors,coupled to downstream serine-threonine protein kinases A and C(PKA and PKC)and voltage-gated calcium channels,at different nerve endings in developmental competition.The dynamic changes that occur simultaneously in several nerve terminals and synapses converge across a postsynaptic site,influence each other,and require careful studies to individualize the mechanisms of specific endings.We describe an activity-dependent balance(related to the extent of transmitter release)between the presynaptic muscarinic subtypes and the neurotrophin-mediated TrkB/p75NTR pathways that can influence the timing and fate of the competitive interactions between the different axon terminals.The downstream displacement of the PKA/PKC activity ratio to lower values,both in competing nerve terminals and at postsynaptic sites,plays a relevant role in controlling the elimination of supernumerary synapses.Finally,calcium entry through L-and P/Q-subtypes of voltage-gated calcium channels(both channels are present,together with the N-type channel in developing nerve terminals)contributes to reduce transmitter release and promote withdrawal of the most unfavorable nerve terminals during elimination(the weakest in acetylcholine release and those that have already become silent).The main findings contribute to a better understanding of punishment-rewarding interactions between nerve endings during development.Identifying the molecular targets and signaling pathways that allow synapse consolidation or withdrawal of synapses in different situations is important for potential therapies in neurodegenerative diseases.展开更多
Background Capsular contracture has become the most common complication associated with breast implant.Transforming growth factor-beta （TGF-β） is well known for a prominent role in fibrotic diseases.Due to the crit...Background Capsular contracture has become the most common complication associated with breast implant.Transforming growth factor-beta （TGF-β） is well known for a prominent role in fibrotic diseases.Due to the critical role of TGF-β in pathogenesis of capsular formation,we utilized thermosensitive C/GP hydrogel to controlled release of TGF-β receptor kinase inhibitor （SD208） and investigated their effects on capsular contracture.Methods In vitro degradation and drug release of C/GP hydrogel were performed.Twenty-four rabbits underwent subpanniculus implantation with 30 ml smooth silicone implants and were randomly divided into four groups as fellows：Group 1 received saline solution;Group 2 received SD208;Group 3 received SD208-C/GP;Group 4 received C/GP.At 8 weeks,the samples of capsular tissues were analyzed by hematoxylin and eosin and immunohistological staining.The mRNA expression of collagen Ⅲ and TGF-β1 was detected by RT-PCR assay.Results C/GP hydrogel could be applied as an ideal drug delivery vehicle which supported the controlled release of SD208.SD208-C/GP treatment showed a significant reduction in capsule thickness with fewer vessels.The histological findings confirmed that the lower amounts of inflammatory cells and fibroblasts infiltrate in SD208-C/GP group.In contrast,typical capsules with more vessel predominance were developed in control group.We did not observe the same inhibitory effect of SD208 or C/GP treatment on capsular contracture.Moreover,SD208-C/GP therapy yielded an evident down-regulation of collagen Ⅲ and TGF-β1 mRNA expression.Conclusions This study demonstrated that controlled release of TGF-β receptor kinase inhibitor from thermosensitive C/GP hydrogel could significantly prevent capsule formation after mammary implants.展开更多
AIM:To study the production and secretion of corticotropin-releasing factor (CRF) by dendritic cells and the influence of commensal bacteria.METHODS:JAWSⅡ cells (ATCC CRL-11904),a mouse dendritic cell line,were seede...AIM:To study the production and secretion of corticotropin-releasing factor (CRF) by dendritic cells and the influence of commensal bacteria.METHODS:JAWSⅡ cells (ATCC CRL-11904),a mouse dendritic cell line,were seeded into 24-well culture plates and grown for 3 d.Commensal bacterial strains of Clostridium clostrodiiforme (JCM1291),Bacteroides vulgatus (B.vulgatus) (JCM5856),Escherichia coli (JCM1649),or Fusobacterium varium (F.varium) (ATCC8501) were added to the cells except for the control well,and incubated for 2 h.After incubation,we performed enzyme-linked immunosorbent assay for the cultured medium and reverse transcription polymerase chain reaction for the dendritic cells,and compared these values with controls.RESULTS:The level of CRF secretion by control dendritic cells was 40.4±6.2 pg/mL.The CRF levels for cells incubated with F.varium and B.vulgatus were significantly higher than that of the control (P<0.0001).CRF mRNA was present in the control sample without bacteria,and CRF mRNA levels in all samples treated with bacteria were above that of the control sample.F.varium caused the greatest increase in CRF mRNA expression.CONCLUSION:Our results suggest that dendritic cells produce CRF,a process augmented by commensal bacteria.展开更多
Hypothalamic Corticotropin-releasing factor (CRF) directly activates the hypothalamic pituitary adrenal axis (HPA axis) during the surgical trauma induced stress response. Electroacupuncture (EA) has been demonstrated...Hypothalamic Corticotropin-releasing factor (CRF) directly activates the hypothalamic pituitary adrenal axis (HPA axis) during the surgical trauma induced stress response. Electroacupuncture (EA) has been demonstrated to have stress relieving effects in breast surgery, colorectal surgery, prostatectomy and craniotomy. This study was aimed to investigate the hypothesis that EA could regulate hypothalamic CRF in surgical trauma rats. In experiment one, Sprague-Dawley (SD) male rats were divided into intact, model (10% partial hepatectomy), sham EA and EA group. Rats from the Sham EA and EA group were stimulated at ST36-Zusanli and SP6-Sanyiniiao acupoints twice, 24 hours before the surgery and immediately after the surgery. Expressions of hypothalamic CRF and CRFR, GABA receptors, glutamate decarboxylase (GAD), serum adrenocorticotropic hormone (ACTH) and Corticosterone (CORT) were observed at 2, 4, 8 and 24 h after the surgery by radioimmunoassay (RIA), western blot, real-time PCR and immunohistochemistry. In the experiment two, SD male rats were divided into the intact, model, model + vehicle, model + L-838,417 EA and EA + L838,417 group. It was found that hypothalamus CRF, serum ACTH and CORT levels were increased in model group compared with the intact group, and those in the EA group decreased in comparison with the model group. Compared with the model group, hypothalamus-aminobutyric acid (GABA) receptor Aα3 mRNA and protein expressions of the EA group raised strikingly. In conclusion, EA alleviated surgical stress response by improving the GABA synthesis in hypothalamus, thus enhancing GABA receptors’ inhibitory regulation of the HPA axis dysfunction in rats with acute surgical trauma.展开更多
目的 探讨腹腔镜下卵巢囊肿剥离术后使用促性腺激素释放激素激动剂(GnRH-a)辅助治疗对患者外周血肿瘤坏死因子-α(TNF-α)与白细胞介素-6(IL-6)及核苷酸结合寡聚域样受体(NLRs)表达水平的影响。方法选取2020年1月至2021年10月哈尔滨市...目的 探讨腹腔镜下卵巢囊肿剥离术后使用促性腺激素释放激素激动剂(GnRH-a)辅助治疗对患者外周血肿瘤坏死因子-α(TNF-α)与白细胞介素-6(IL-6)及核苷酸结合寡聚域样受体(NLRs)表达水平的影响。方法选取2020年1月至2021年10月哈尔滨市第一医院收治的84例卵巢囊肿患者为研究对象,按照随机数字表法将患者分成观察组(42例)与对照组(42例),对照组应用腹腔镜下卵巢囊肿剥离术治疗,观察组在对照组的基础上,术后应用Gn RH-a辅助治疗,观察两组术后6个月的疗效与妊娠率以及术前术后血清TNF-α与IL-6表达水平、NLRs家族NOD1与NOD2 m RNA表达水平。结果 观察组总有效率与妊娠率分别为95.24%、78.57%,对照组分别为78.57%、50.00%,观察组总有效率与妊娠率均高于对照组,差异有统计学意义(P<0.05);治疗后,两组患者的TNF-α、IL-6、NOD1 m RNA、NOD2 m RNA水平均低于本组治疗前,且观察组低于对照组,差异有统计学意义(P<0.05)。结论 Gn RH-a辅助腹腔镜下卵巢囊肿剥离术治疗,可以取得良好的治疗效果,提高临床妊娠率,降低外周血TNF-α、IL-6及NLRs表达水平。展开更多
目的:从结肠、海马及下丘脑中促肾上腺皮质激素释放因子(corticotropin releasing factor,CRF)和CRF受体1(CRF receptor 1,CRFR1)角度探讨健脾化湿颗粒改善腹泻型肠易激综合征(diarrhea-predominant irritable bowel syndrome,D-IBS)模...目的:从结肠、海马及下丘脑中促肾上腺皮质激素释放因子(corticotropin releasing factor,CRF)和CRF受体1(CRF receptor 1,CRFR1)角度探讨健脾化湿颗粒改善腹泻型肠易激综合征(diarrhea-predominant irritable bowel syndrome,D-IBS)模型大鼠结肠运动和内脏敏感性的作用机制.方法:采用番泻叶灌胃结合束缚应激法建立D-I B S大鼠模型,应用健脾化湿颗粒进行干预,采用酶联免疫法(ELISA)检测大鼠结肠中CRF含量,采用免疫组织化学法检测结肠中CRFR1及海马、下丘脑中CRF,CRFR1阳性表达,采用RT-PCR法检测结肠、海马中CRF m RNA和CRFR1 m RNA的表达水平.结果:与正常组相比,模型组结肠中CRF含量(67.1±3.8 vs 36.0±3.0),海马、下丘脑中CRF阳性表达(0.23±0.02 vs 0.09±0.01,0.17±0.02 v s 0.09±0.01)明显升高(P<0.01);结肠、海马、下丘脑中C R F R1阳性表达(0.17±0.01 vs 0.03±0.01,0.20±0.02 vs 0.09±0.01,0.19±0.02 vs 0.07±0.01)明显升高(P<0.01);结肠、海马中C R F m RNA和CRFR1 m RNA的表达(结肠:0.89±0.04 vs 0.09±0.01,1.09±0.09 vs 0.21±0.04;海马:0.56±0.01 vs 0.15±0.05,1.26±0.14 vs 0.23±0.06)显著升高(P<0.01).与模型组相比,各治疗组结肠、海马中C R F(51.0±3.4,54.6±4.1,45.1±4.7,43.3±3.9 vs 67.1±3.8;0.18±0.02,0.19±0.02,0.15±0.02,0.11±0.01 vs 0.23±0.02)显著下降(P<0.01),阳性对照组、中、高剂量组下丘脑中CRF(0.15±0.02,0.13±0.01,0.12±0.01 vs 0.17±0.02)下降显著(P<0.05,P<0.0 1);阳性对照组、中、高剂量组结肠、海马、下丘脑中C R F R1表达(结肠:0.10±0.01,0.08±0.01,0.05±0.01 vs 0.17±0.01;海马:0.16±0.01,0.14±0.02,0.13±0.01 vs 0.20±0.02;下丘脑:0.15±0.02,0.13±0.01,0.11±0.01 vs 0.19±0.02)下降显著(P<0.05,P<0.01);结肠中CRF m RNA表达(0.63±0.04,0.76±0.06,0.32±0.06,0.13±0.03 v s 0.89±0.04)及中、高剂量组海马中CRF m RNA表达(0.76±0.11,0.67±0.10 v s 1.09±0.09)显著降低(P<0.01);阳性对照组、中、高剂量组结肠中C R F R1m RNA表达(0.47±0.03,0.40±0.06,0.24±0.06 vs 0.56±0.01)及中、高剂量组海马中CRFR1 m RNA表达(0.62±0.06,0.60±0.07vs 1.26±0.14)显著降低(P<0.05,P<0.01).结论:健脾化湿颗粒可能通过下调结肠、海马及下丘脑中CRF、CRFR1表达来改善D-IBS模型大鼠结肠运动和内脏敏感性.展开更多
基金Supported by The National Institute of Diabetes and Digestive and Kidney Diseases R01 grant DK-57238Center Grant DK-41301 (Clinical core)+1 种基金Veteran Administration Research Career Scientist Award (YT)NIH DK-78676 (MM)
文摘AIM: To assess corticotropin-releasing factor receptor 2 (CRF 2 ) expression in the colon of healthy subjects and patients with ulcerative colitis (UC). METHODS: We examined CRF2 gene and protein expression in the distal/sigmoid colonic mucosal biopsies from healthy subjects and patients with UC (active or disease in remission), human immunodeficiency virus (HIV) and functional bowel disease (FBD) by reverse transcriptionpolymerase chain reaction and immunofluorescence. RESULTS: Gene expression of CRF2 was demonstrated in the normal human colonic biopsies, but not in the human colorectal adenocarcinoma cell line Caco2. Receptor protein localization showed immunoreactive CRF 2 receptors in the lamina propria and in the epithelial cells of the distal/sigmoid biopsy samples. Interestingly, CRF 2 immunoreactivity was no longer observed in epithelial cells of patients with mild-moderately active UC and disease in remission, while receptor protein expression did not change in the lamina propria. No differences in CRF 2 expression profile were observed in distal/sigmoid intestinal biopsies from HIV infection and FBD patients, showing no signs of inflammation. CONCLUSION: The down-regulation of the CRF2 receptor in the distal/sigmoid biopsies of UC patients is indicative of change in CRF 2 signalling associated with the process of inflammation.
基金Funded by the National 863 Project of China (No. 2004AA215162)
文摘To assess the merits of PEGylated poly （lactic-co-glycolic acid） （PEG-PLGA） nanoparticles as drug carriers for tumor necrosis factor-α receptor blocking peptide （TNFR-BP）, PEG-PLGA copolymer, which could be used to prepare the stealth nanoparticles, was synthesized with methoxypolyethyleneglycol, DL-lactide and glycolide. The structure of PEG-PLGA was confirmed with ^1H-NMR and FT-IR spectroscopy, and the molecular weight （MW） was determined by gel permeation chromatography. Fluorescent FITC-TNFR- BP was chosen as model protein and encapsulated within PEG-PLGA nanoparticles using the double emulsion method. Atomic force microscopy and photon correlation spectroscopy were employed to characterize the stealth nanoparticles fabricated for morphology, size with polydispersity index and zeta potential. Encapsulation efficiency （EE） and the release of FITC-TNFR-BP in nanopartieles in vitro were measured by the fluorescence measurement. The stealth nanoparticles were found to have the mean diameter less than 270 nm and zeta potential less than -20 mV. In all nanoparticle formulations, more than 45% of EE were obtained. FITC-TNFR-BP release from the PEG-PLGA nanoparticles exhibited a biphasic pattern, initial burst release and consequently sustained release. The experimental results show that PEG-PLGA nanoparticles possess the potential to develop as drug carriers for controlled release applications of TNFR-BP.
基金supported by Catalan Government,Nos.2014SGR344(to JT),2017SGR704(to JT),2021SGR01214(to MAL)MCIN/AEI/10.13039/501100011033/by“ERDF A way of making Europe,”Nos.SAF2015-67143(to JT),PID2019-106332GB-I00(to JT and MAL)and PID2022-141252NB-I00(to MAL).
文摘During the development of the nervous system,there is an overproduction of neurons and synapses.Hebbian competition between neighboring nerve endings and synapses performing different activity levels leads to their elimination or strengthening.We have extensively studied the involvement of the brain-derived neurotrophic factor-Tropomyosin-related kinase B receptor neurotrophic retrograde pathway,at the neuromuscular junction,in the axonal development and synapse elimination process versus the synapse consolidation.The purpose of this review is to describe the neurotrophic influence on developmental synapse elimination,in relation to other molecular pathways that we and others have found to regulate this process.In particular,we summarize our published results based on transmitter release analysis and axonal counts to show the different involvement of the presynaptic acetylcholine muscarinic autoreceptors,coupled to downstream serine-threonine protein kinases A and C(PKA and PKC)and voltage-gated calcium channels,at different nerve endings in developmental competition.The dynamic changes that occur simultaneously in several nerve terminals and synapses converge across a postsynaptic site,influence each other,and require careful studies to individualize the mechanisms of specific endings.We describe an activity-dependent balance(related to the extent of transmitter release)between the presynaptic muscarinic subtypes and the neurotrophin-mediated TrkB/p75NTR pathways that can influence the timing and fate of the competitive interactions between the different axon terminals.The downstream displacement of the PKA/PKC activity ratio to lower values,both in competing nerve terminals and at postsynaptic sites,plays a relevant role in controlling the elimination of supernumerary synapses.Finally,calcium entry through L-and P/Q-subtypes of voltage-gated calcium channels(both channels are present,together with the N-type channel in developing nerve terminals)contributes to reduce transmitter release and promote withdrawal of the most unfavorable nerve terminals during elimination(the weakest in acetylcholine release and those that have already become silent).The main findings contribute to a better understanding of punishment-rewarding interactions between nerve endings during development.Identifying the molecular targets and signaling pathways that allow synapse consolidation or withdrawal of synapses in different situations is important for potential therapies in neurodegenerative diseases.
基金This research was supported by grants from the Heilongjiang Provincial Health Department （No. 2006-063） and National Natural Science Foundation of China （No. 30325042）.
文摘Background Capsular contracture has become the most common complication associated with breast implant.Transforming growth factor-beta （TGF-β） is well known for a prominent role in fibrotic diseases.Due to the critical role of TGF-β in pathogenesis of capsular formation,we utilized thermosensitive C/GP hydrogel to controlled release of TGF-β receptor kinase inhibitor （SD208） and investigated their effects on capsular contracture.Methods In vitro degradation and drug release of C/GP hydrogel were performed.Twenty-four rabbits underwent subpanniculus implantation with 30 ml smooth silicone implants and were randomly divided into four groups as fellows：Group 1 received saline solution;Group 2 received SD208;Group 3 received SD208-C/GP;Group 4 received C/GP.At 8 weeks,the samples of capsular tissues were analyzed by hematoxylin and eosin and immunohistological staining.The mRNA expression of collagen Ⅲ and TGF-β1 was detected by RT-PCR assay.Results C/GP hydrogel could be applied as an ideal drug delivery vehicle which supported the controlled release of SD208.SD208-C/GP treatment showed a significant reduction in capsule thickness with fewer vessels.The histological findings confirmed that the lower amounts of inflammatory cells and fibroblasts infiltrate in SD208-C/GP group.In contrast,typical capsules with more vessel predominance were developed in control group.We did not observe the same inhibitory effect of SD208 or C/GP treatment on capsular contracture.Moreover,SD208-C/GP therapy yielded an evident down-regulation of collagen Ⅲ and TGF-β1 mRNA expression.Conclusions This study demonstrated that controlled release of TGF-β receptor kinase inhibitor from thermosensitive C/GP hydrogel could significantly prevent capsule formation after mammary implants.
基金Supported by Grants in Aid for Scientific Research (C) from the Japanese Ministry of Education,Culture,Sports,Science and Technology,No. 17590679
文摘AIM:To study the production and secretion of corticotropin-releasing factor (CRF) by dendritic cells and the influence of commensal bacteria.METHODS:JAWSⅡ cells (ATCC CRL-11904),a mouse dendritic cell line,were seeded into 24-well culture plates and grown for 3 d.Commensal bacterial strains of Clostridium clostrodiiforme (JCM1291),Bacteroides vulgatus (B.vulgatus) (JCM5856),Escherichia coli (JCM1649),or Fusobacterium varium (F.varium) (ATCC8501) were added to the cells except for the control well,and incubated for 2 h.After incubation,we performed enzyme-linked immunosorbent assay for the cultured medium and reverse transcription polymerase chain reaction for the dendritic cells,and compared these values with controls.RESULTS:The level of CRF secretion by control dendritic cells was 40.4±6.2 pg/mL.The CRF levels for cells incubated with F.varium and B.vulgatus were significantly higher than that of the control (P<0.0001).CRF mRNA was present in the control sample without bacteria,and CRF mRNA levels in all samples treated with bacteria were above that of the control sample.F.varium caused the greatest increase in CRF mRNA expression.CONCLUSION:Our results suggest that dendritic cells produce CRF,a process augmented by commensal bacteria.
文摘Hypothalamic Corticotropin-releasing factor (CRF) directly activates the hypothalamic pituitary adrenal axis (HPA axis) during the surgical trauma induced stress response. Electroacupuncture (EA) has been demonstrated to have stress relieving effects in breast surgery, colorectal surgery, prostatectomy and craniotomy. This study was aimed to investigate the hypothesis that EA could regulate hypothalamic CRF in surgical trauma rats. In experiment one, Sprague-Dawley (SD) male rats were divided into intact, model (10% partial hepatectomy), sham EA and EA group. Rats from the Sham EA and EA group were stimulated at ST36-Zusanli and SP6-Sanyiniiao acupoints twice, 24 hours before the surgery and immediately after the surgery. Expressions of hypothalamic CRF and CRFR, GABA receptors, glutamate decarboxylase (GAD), serum adrenocorticotropic hormone (ACTH) and Corticosterone (CORT) were observed at 2, 4, 8 and 24 h after the surgery by radioimmunoassay (RIA), western blot, real-time PCR and immunohistochemistry. In the experiment two, SD male rats were divided into the intact, model, model + vehicle, model + L-838,417 EA and EA + L838,417 group. It was found that hypothalamus CRF, serum ACTH and CORT levels were increased in model group compared with the intact group, and those in the EA group decreased in comparison with the model group. Compared with the model group, hypothalamus-aminobutyric acid (GABA) receptor Aα3 mRNA and protein expressions of the EA group raised strikingly. In conclusion, EA alleviated surgical stress response by improving the GABA synthesis in hypothalamus, thus enhancing GABA receptors’ inhibitory regulation of the HPA axis dysfunction in rats with acute surgical trauma.
文摘目的 探讨腹腔镜下卵巢囊肿剥离术后使用促性腺激素释放激素激动剂(GnRH-a)辅助治疗对患者外周血肿瘤坏死因子-α(TNF-α)与白细胞介素-6(IL-6)及核苷酸结合寡聚域样受体(NLRs)表达水平的影响。方法选取2020年1月至2021年10月哈尔滨市第一医院收治的84例卵巢囊肿患者为研究对象,按照随机数字表法将患者分成观察组(42例)与对照组(42例),对照组应用腹腔镜下卵巢囊肿剥离术治疗,观察组在对照组的基础上,术后应用Gn RH-a辅助治疗,观察两组术后6个月的疗效与妊娠率以及术前术后血清TNF-α与IL-6表达水平、NLRs家族NOD1与NOD2 m RNA表达水平。结果 观察组总有效率与妊娠率分别为95.24%、78.57%,对照组分别为78.57%、50.00%,观察组总有效率与妊娠率均高于对照组,差异有统计学意义(P<0.05);治疗后,两组患者的TNF-α、IL-6、NOD1 m RNA、NOD2 m RNA水平均低于本组治疗前,且观察组低于对照组,差异有统计学意义(P<0.05)。结论 Gn RH-a辅助腹腔镜下卵巢囊肿剥离术治疗,可以取得良好的治疗效果,提高临床妊娠率,降低外周血TNF-α、IL-6及NLRs表达水平。
文摘目的:从结肠、海马及下丘脑中促肾上腺皮质激素释放因子(corticotropin releasing factor,CRF)和CRF受体1(CRF receptor 1,CRFR1)角度探讨健脾化湿颗粒改善腹泻型肠易激综合征(diarrhea-predominant irritable bowel syndrome,D-IBS)模型大鼠结肠运动和内脏敏感性的作用机制.方法:采用番泻叶灌胃结合束缚应激法建立D-I B S大鼠模型,应用健脾化湿颗粒进行干预,采用酶联免疫法(ELISA)检测大鼠结肠中CRF含量,采用免疫组织化学法检测结肠中CRFR1及海马、下丘脑中CRF,CRFR1阳性表达,采用RT-PCR法检测结肠、海马中CRF m RNA和CRFR1 m RNA的表达水平.结果:与正常组相比,模型组结肠中CRF含量(67.1±3.8 vs 36.0±3.0),海马、下丘脑中CRF阳性表达(0.23±0.02 vs 0.09±0.01,0.17±0.02 v s 0.09±0.01)明显升高(P<0.01);结肠、海马、下丘脑中C R F R1阳性表达(0.17±0.01 vs 0.03±0.01,0.20±0.02 vs 0.09±0.01,0.19±0.02 vs 0.07±0.01)明显升高(P<0.01);结肠、海马中C R F m RNA和CRFR1 m RNA的表达(结肠:0.89±0.04 vs 0.09±0.01,1.09±0.09 vs 0.21±0.04;海马:0.56±0.01 vs 0.15±0.05,1.26±0.14 vs 0.23±0.06)显著升高(P<0.01).与模型组相比,各治疗组结肠、海马中C R F(51.0±3.4,54.6±4.1,45.1±4.7,43.3±3.9 vs 67.1±3.8;0.18±0.02,0.19±0.02,0.15±0.02,0.11±0.01 vs 0.23±0.02)显著下降(P<0.01),阳性对照组、中、高剂量组下丘脑中CRF(0.15±0.02,0.13±0.01,0.12±0.01 vs 0.17±0.02)下降显著(P<0.05,P<0.0 1);阳性对照组、中、高剂量组结肠、海马、下丘脑中C R F R1表达(结肠:0.10±0.01,0.08±0.01,0.05±0.01 vs 0.17±0.01;海马:0.16±0.01,0.14±0.02,0.13±0.01 vs 0.20±0.02;下丘脑:0.15±0.02,0.13±0.01,0.11±0.01 vs 0.19±0.02)下降显著(P<0.05,P<0.01);结肠中CRF m RNA表达(0.63±0.04,0.76±0.06,0.32±0.06,0.13±0.03 v s 0.89±0.04)及中、高剂量组海马中CRF m RNA表达(0.76±0.11,0.67±0.10 v s 1.09±0.09)显著降低(P<0.01);阳性对照组、中、高剂量组结肠中C R F R1m RNA表达(0.47±0.03,0.40±0.06,0.24±0.06 vs 0.56±0.01)及中、高剂量组海马中CRFR1 m RNA表达(0.62±0.06,0.60±0.07vs 1.26±0.14)显著降低(P<0.05,P<0.01).结论:健脾化湿颗粒可能通过下调结肠、海马及下丘脑中CRF、CRFR1表达来改善D-IBS模型大鼠结肠运动和内脏敏感性.
