Objective To search novel genes or pathways involved in the recovery process after restraint stress in rats. Methods We compared the hypothalamus transcriptional profiles of two different recovery patterns (fast reco...Objective To search novel genes or pathways involved in the recovery process after restraint stress in rats. Methods We compared the hypothalamus transcriptional profiles of two different recovery patterns (fast recovery vs slow recovery) from restraint stress in rats using oligonucleotide microarray, the recovery pattern was determined by the decrement of plasma adrenocorticotropic-hormone (ACTH) and corticosterone levels during one hour recovery period after stress. A real-time quantitative RT-PCR was applied to validate the differential expressed genes. Results Analysis of the microarray data showed that most of genes were not differentially expressed between fast recovery group and slow recovery group. Among the differentially expressed genes we found that talin, together with serine/threonine protein phosphatase PPl-beta catalytic subunit (PP-1B) and integrin α-6 precursor (VLA-6) genes, were at least 1.5 fold upregulated in the fast recovery group, while junctional adhesion molecule 1 (F11r) was 1.5 fold down-regulated in the fast recovery group. Conclusion The results implied that integrin signaling pathway may be involved in the recovery from restraint stress in rats. The present study provided a global overview of hypothalamus transcriptional profiles during the process of recovery from the restraint stress in rats. The integrin signaling pathway seems to be involved in the recovery process, which deserves further study to clarify the integrin-mediated recovery mechanism after restraint stress.展开更多
Objective Measuring the serum concentrations of adrenocorticotropic hormone (ACTH) and cortisol in epileptic seizures during sleep to investigate their link to the EEG changes. Methods Pre-surgical evaluation was pe...Objective Measuring the serum concentrations of adrenocorticotropic hormone (ACTH) and cortisol in epileptic seizures during sleep to investigate their link to the EEG changes. Methods Pre-surgical evaluation was performed by videoEEG monitoring using 24 channel recording. Thirty six epilepsy patients could be attributed to two groups: 28 patients had spontaneous seizures, and the other 8 patients whose seizures were induced by bemegride. Another 11 persons with confirmed psychogenic non-epileptic seizures (PNES) served as control group. Blood samples were obtained at five points: wake (08:00 a.m.), sleep (00:00 a.m.), and shortly before, during and after an epileptic seizure. The serum ACTH and cortisol were measured and analyzed by chemiluminescent immunoassay. Results The levels of ACTH and cortisol in serum underwent significant changes: declining below the average sleep-level shortly before seizures, increasing during seizures, and far above the average wake-level after seizures (P 〈 0.001). Such changes did not occur in the control group (P 〉 0.05). The ACTH and cortisol levels had no significant difference between spontaneous group and bemegride-induced group (P 〉 0.05). Conclusion The serum concentrations of ACTH and cortisol during sleep seizures are linked with pre-ictal and ictal EEG changes in epilepsy patients.展开更多
AIM: To investigate the effect and mechanism of electro-acupuncture lEA) at ST25 and ST37 on irritable bowel syndrome (IBS) of rats. METHODS: A total of 21 male Sprague-Dawley rats were randomly divided into norm...AIM: To investigate the effect and mechanism of electro-acupuncture lEA) at ST25 and ST37 on irritable bowel syndrome (IBS) of rats. METHODS: A total of 21 male Sprague-Dawley rats were randomly divided into normal group, model group and EA group. A rat model of IBS was established by constraining the limbs and distending the colorectum of rats. Rats in EA group received bilateral EA at ST25 and ST37 with a sparse and intense waveform at a frequency of 2/50 Hz for 15 min, once a day for 7 d as a course. Rats in normal and model groups were stimulated by distending colorectum (CR). An abdominal withdrawal reflex (AWR) scoring system was used to evaluate improvements in visceral hypersensitivity. Toluidine blue-improved method, immunohistochemistry and radioimmunoassay were used to observe mucosal mast cells (MC), changes of substance P (SP) and substance P receptor (SPR) in colon and change of corticotropin-releasing hormone (CRH) in hypothalamus. RESULTS: The threshold of visceral sense was significantly lower in model group than in normal group,and significantly higher in EA group than in model group. The number of mucosal MC was greater in model group than in normal group and significantly smaller in EA group than in model group. The CRH level in hypothalamus of rats was significantly higher in model group than in normal group, which was remarkably decreased after electro-acupuncture treatment. The SP and SPR expression in colon of rats in model group was decreased after electro-acupuncture treatment. CONCLUSION: EA at ST25 and ST37 can decrease the number of mucosal MC and down-regulate the expression of CRH in hypothalamus, and the expression of SP and SPR in colon of rats with IBS.展开更多
AIM:To evaluate the effect of suspended moxibustion(SM) on rectal sensory thresholds and to analyze the possible mechanisms involved in SM treatment of chronic visceral hypersensitivity(CVH) in rats.METHODS:SM was adm...AIM:To evaluate the effect of suspended moxibustion(SM) on rectal sensory thresholds and to analyze the possible mechanisms involved in SM treatment of chronic visceral hypersensitivity(CVH) in rats.METHODS:SM was administered once daily to 37-dold CVH rats for 7 d.The two pairs of acupoints(ST25 and ST37,bilateral) were simultaneously treated with SM.Each treatment lasted for 30 min.Rats undergoing treatment with SM were not anesthetized.Untreated CVH rats and normal rats were used as controls.The abdominal withdrawal reflex was determined 30-90 min after the seven treatments.The hypothalamic corticotropin-releasing hormone(CRH) mRNA level was measured using real-time quantitative reverse transcriptionpolymerase chain reaction.RESULTS:We found that SM treatment significantly decreased visceral sensitivity to colorectal distention in this rat model.In treated animals,SM also decreased the relative hypothalamic CRH mRNA expression level to control levels.CONCLUSION:Lower hypothalamic CRH levels may mediate the beneficial effects of SM in this rat irritable bowel syndrome model.展开更多
AIM:To investigate whether peripheral corticotropin releasing hormone (CRH), which is up-regulated in intestinal inflammation, mediates the post-inflammatory visceral hypersensitivity in a rat model of colitis. METHOD...AIM:To investigate whether peripheral corticotropin releasing hormone (CRH), which is up-regulated in intestinal inflammation, mediates the post-inflammatory visceral hypersensitivity in a rat model of colitis. METHODS:We measured mucosal myeloperoxidase (MPO) activity as a marker of inflammation, plasma CRH level, and abdominal withdrawal reflex (AWR) to colorectal distension as a visceral nociceptive response at 2, 7 and 14 d after the induction of colitis with 4% acetic acid. RESULTS:Colonic inflammation, quantified by MPO activity, significantly increased on d 2 and subsided thereafter, which indicated a resolution of inflammation within 7 d. On the contrary, plasma CRH level and AWR score were increased on d 2, remained high on d 7, and returned to control level on d 14. Intraperitoneal injection of a CRH antagonist, astressin (30 μg/kg), significantly attenuated the post-inflammatory visceral hypersensitivity on d 7. Furthermore, intraperitoneal administration of CRH (3 and 10 μg/kg) mimicked the post-inflammatory visceral hypersensitivity in naive rats. CONCLUSION:These results suggest that increased peripheral CRH mediates the enhanced visceral nociception in rats recovered from experimental colitis.展开更多
Objective To evaluate magnetic resonance imaging (MRI) characteristics and surgical results of adrenocorticotropin (ACTH) -secreting pituitary adenomas. Methods MRI characteristics and relationship between MRI po...Objective To evaluate magnetic resonance imaging (MRI) characteristics and surgical results of adrenocorticotropin (ACTH) -secreting pituitary adenomas. Methods MRI characteristics and relationship between MRI positive rate and surgical results of 266 patients with pathologically confn'med Cushing's disease were analyzed retrospectively. All patients underwent thin-section sagittal and coronal scans of the pituitary gland before and after administration of gadolinium-diethylene triamine pentaacetic acid (Gd-DTPA) on a 1. 5 Tesla MR/scanner, and dynamic enhanced MR/was performed in 39 patients. All patients underwent transsphenoidal adenomectomy. Endocrinological examinations and assessments were performed. Results Preoperative MR/revealed normal results in 41 ( 15.4% ) cases, microadenoma in 179 (67. 3% ), macroadenoma in 42 ( 15.8% ), and huge adenoma in 4 ( 1.5% ). Pituitary apoplexy was found in 13 (4.9%) cases. Positive rate of ACTH-secreting adenomas was 84.6% (225/266) on MR/scans, and that of small microadenomas was 87.2% (34/39) on dynamic enhanced MRI scans. Preoperative endocrinological tests of 199 cases supported the diagnosis of typical Cushing's disease, while the other 67 cases had atypical endocrinological results. The endocrinological cure rate, remission rate, and inefficacy rate were 85.7%, 7.9%, and 6. 4%, respectively. There was no difference in the initial endocrinological cure rate between the patients with positive and normal MRI results (90% vs. 87. 8%, P =0. 904). Conclusions Enhanced coronal pituitary MR/ is helpful for preoperative localization of ACTH-secreting pituitary microadenoma. Dynamic enhanced MR/may improve detection rate of microadenoma. There is no marked difference in the surgical results for patients with preoperative MR/results indicating presence or absence of microadenoma.展开更多
AIM: Glucocorticoid (GC) resistant ulcerative colitis (UC) remains a serious disease and is difficult to manage. Although the molecular basis of GC insensitivity is still unknown, GC receptors (GRAAA and GRp) may play...AIM: Glucocorticoid (GC) resistant ulcerative colitis (UC) remains a serious disease and is difficult to manage. Although the molecular basis of GC insensitivity is still unknown, GC receptors (GRAAA and GRp) may play an important role in it. This study was aimed to investigate the relationship between the expression of GRa and GRp in colonic mucosal cells of patients with UC, the efficacy of GC therapy and the intensity of inflammation. METHODS: Twenty-five cases of UC were classified into: GC sensitive (n = 16) and GC resistant (n - 9) cases. Patients consisted of mild (n = 6), moderate (n = 8) and severe (n = 11) cases. GRa and GRp expression in colonic mucosal specimens were investigated by immunohistochemistry, and compared between GC resistant and sensitive groups, and also among various degrees of inflammation. RESULTS: All cases were positive for GRa and GRp expression. Both positive association between GRa expression and the response of UC to GC and strong negative association between GRp expression and the response of UC to GC were identified. There was no significant association between GRa/GRp expression and the degree of inflammation of UC. CONCLUSION: These findings suggest that both GRa and GRp may play an important role in the action of GC, and that GRp functions as a dominant negative inhibitor of GRa. Expression of GRa and GRp in colonic mucosal cells of patients with UC may serve as predictors of glucocorticoid response, but can not function as markers of inflammatory intensity.展开更多
Objective: To investigate the effects of sleep electroencephalogram-modulated repetitive transcranial magnetic stimulation (SEM-rTMS) and conventional rTMS (C-rTMS) on the activity of hypothalamic-pituitary-adren...Objective: To investigate the effects of sleep electroencephalogram-modulated repetitive transcranial magnetic stimulation (SEM-rTMS) and conventional rTMS (C-rTMS) on the activity of hypothalamic-pituitary-adrenal (HPA) axis in patients with depression. Methods: In a double-blind, randomized controlled trial, 164 patients diagnosed with depression were randomized to treatment with SEM-rTMS (n=57), C-rTMS (n=55) or sham rTMS (n=52) for 30 rain every day for 10 d. Before and after treatment plasma concentrations of adrenocorticotropic hormone (ACTH) and cortisol (CORT) were measured, and the 24-item Hamilton Depression Rating Scale (HAMD-24) was used for assessment. Results: The HAMD-24 scores and plasma ACTH and CORT concentrations of these depressive patients before treatment were significantly different from those of the normal control group (P〈0.05). The HAMD-24 scores and plasma ACTH and CORT concentrations in the SEM-rTMS group and conventional rTMS group were decreased significantly (P〈0.05). There was a significant positive correlation between the HAMD-24 scores and plasma ACTH (n=240, r=0.105, P=0.048) and CORT concentrations (n-240, r=0.126, P=0.023) in the patients with depression before and after treatment. Conclusion: The antidepressant effect of rTMS, including SEM-rTMS, may be related to its decreasing HPA axis activity. (This trail was registered. No: ChiCTR-TRC-00000465)展开更多
文摘Objective To search novel genes or pathways involved in the recovery process after restraint stress in rats. Methods We compared the hypothalamus transcriptional profiles of two different recovery patterns (fast recovery vs slow recovery) from restraint stress in rats using oligonucleotide microarray, the recovery pattern was determined by the decrement of plasma adrenocorticotropic-hormone (ACTH) and corticosterone levels during one hour recovery period after stress. A real-time quantitative RT-PCR was applied to validate the differential expressed genes. Results Analysis of the microarray data showed that most of genes were not differentially expressed between fast recovery group and slow recovery group. Among the differentially expressed genes we found that talin, together with serine/threonine protein phosphatase PPl-beta catalytic subunit (PP-1B) and integrin α-6 precursor (VLA-6) genes, were at least 1.5 fold upregulated in the fast recovery group, while junctional adhesion molecule 1 (F11r) was 1.5 fold down-regulated in the fast recovery group. Conclusion The results implied that integrin signaling pathway may be involved in the recovery from restraint stress in rats. The present study provided a global overview of hypothalamus transcriptional profiles during the process of recovery from the restraint stress in rats. The integrin signaling pathway seems to be involved in the recovery process, which deserves further study to clarify the integrin-mediated recovery mechanism after restraint stress.
文摘Objective Measuring the serum concentrations of adrenocorticotropic hormone (ACTH) and cortisol in epileptic seizures during sleep to investigate their link to the EEG changes. Methods Pre-surgical evaluation was performed by videoEEG monitoring using 24 channel recording. Thirty six epilepsy patients could be attributed to two groups: 28 patients had spontaneous seizures, and the other 8 patients whose seizures were induced by bemegride. Another 11 persons with confirmed psychogenic non-epileptic seizures (PNES) served as control group. Blood samples were obtained at five points: wake (08:00 a.m.), sleep (00:00 a.m.), and shortly before, during and after an epileptic seizure. The serum ACTH and cortisol were measured and analyzed by chemiluminescent immunoassay. Results The levels of ACTH and cortisol in serum underwent significant changes: declining below the average sleep-level shortly before seizures, increasing during seizures, and far above the average wake-level after seizures (P 〈 0.001). Such changes did not occur in the control group (P 〉 0.05). The ACTH and cortisol levels had no significant difference between spontaneous group and bemegride-induced group (P 〉 0.05). Conclusion The serum concentrations of ACTH and cortisol during sleep seizures are linked with pre-ictal and ictal EEG changes in epilepsy patients.
基金Supported by Open Fund of Key Laboratory of Acupuncture Combined with Medication (Nanjing University of TCM), Ministry of Education, No. KJA200809Shanghai Rising-Star Program, No. 08QA14064Shanghai Leading Academic Discipline Project, No. S30304
文摘AIM: To investigate the effect and mechanism of electro-acupuncture lEA) at ST25 and ST37 on irritable bowel syndrome (IBS) of rats. METHODS: A total of 21 male Sprague-Dawley rats were randomly divided into normal group, model group and EA group. A rat model of IBS was established by constraining the limbs and distending the colorectum of rats. Rats in EA group received bilateral EA at ST25 and ST37 with a sparse and intense waveform at a frequency of 2/50 Hz for 15 min, once a day for 7 d as a course. Rats in normal and model groups were stimulated by distending colorectum (CR). An abdominal withdrawal reflex (AWR) scoring system was used to evaluate improvements in visceral hypersensitivity. Toluidine blue-improved method, immunohistochemistry and radioimmunoassay were used to observe mucosal mast cells (MC), changes of substance P (SP) and substance P receptor (SPR) in colon and change of corticotropin-releasing hormone (CRH) in hypothalamus. RESULTS: The threshold of visceral sense was significantly lower in model group than in normal group,and significantly higher in EA group than in model group. The number of mucosal MC was greater in model group than in normal group and significantly smaller in EA group than in model group. The CRH level in hypothalamus of rats was significantly higher in model group than in normal group, which was remarkably decreased after electro-acupuncture treatment. The SP and SPR expression in colon of rats in model group was decreased after electro-acupuncture treatment. CONCLUSION: EA at ST25 and ST37 can decrease the number of mucosal MC and down-regulate the expression of CRH in hypothalamus, and the expression of SP and SPR in colon of rats with IBS.
文摘AIM:To evaluate the effect of suspended moxibustion(SM) on rectal sensory thresholds and to analyze the possible mechanisms involved in SM treatment of chronic visceral hypersensitivity(CVH) in rats.METHODS:SM was administered once daily to 37-dold CVH rats for 7 d.The two pairs of acupoints(ST25 and ST37,bilateral) were simultaneously treated with SM.Each treatment lasted for 30 min.Rats undergoing treatment with SM were not anesthetized.Untreated CVH rats and normal rats were used as controls.The abdominal withdrawal reflex was determined 30-90 min after the seven treatments.The hypothalamic corticotropin-releasing hormone(CRH) mRNA level was measured using real-time quantitative reverse transcriptionpolymerase chain reaction.RESULTS:We found that SM treatment significantly decreased visceral sensitivity to colorectal distention in this rat model.In treated animals,SM also decreased the relative hypothalamic CRH mRNA expression level to control levels.CONCLUSION:Lower hypothalamic CRH levels may mediate the beneficial effects of SM in this rat irritable bowel syndrome model.
文摘AIM:To investigate whether peripheral corticotropin releasing hormone (CRH), which is up-regulated in intestinal inflammation, mediates the post-inflammatory visceral hypersensitivity in a rat model of colitis. METHODS:We measured mucosal myeloperoxidase (MPO) activity as a marker of inflammation, plasma CRH level, and abdominal withdrawal reflex (AWR) to colorectal distension as a visceral nociceptive response at 2, 7 and 14 d after the induction of colitis with 4% acetic acid. RESULTS:Colonic inflammation, quantified by MPO activity, significantly increased on d 2 and subsided thereafter, which indicated a resolution of inflammation within 7 d. On the contrary, plasma CRH level and AWR score were increased on d 2, remained high on d 7, and returned to control level on d 14. Intraperitoneal injection of a CRH antagonist, astressin (30 μg/kg), significantly attenuated the post-inflammatory visceral hypersensitivity on d 7. Furthermore, intraperitoneal administration of CRH (3 and 10 μg/kg) mimicked the post-inflammatory visceral hypersensitivity in naive rats. CONCLUSION:These results suggest that increased peripheral CRH mediates the enhanced visceral nociception in rats recovered from experimental colitis.
文摘Objective To evaluate magnetic resonance imaging (MRI) characteristics and surgical results of adrenocorticotropin (ACTH) -secreting pituitary adenomas. Methods MRI characteristics and relationship between MRI positive rate and surgical results of 266 patients with pathologically confn'med Cushing's disease were analyzed retrospectively. All patients underwent thin-section sagittal and coronal scans of the pituitary gland before and after administration of gadolinium-diethylene triamine pentaacetic acid (Gd-DTPA) on a 1. 5 Tesla MR/scanner, and dynamic enhanced MR/was performed in 39 patients. All patients underwent transsphenoidal adenomectomy. Endocrinological examinations and assessments were performed. Results Preoperative MR/revealed normal results in 41 ( 15.4% ) cases, microadenoma in 179 (67. 3% ), macroadenoma in 42 ( 15.8% ), and huge adenoma in 4 ( 1.5% ). Pituitary apoplexy was found in 13 (4.9%) cases. Positive rate of ACTH-secreting adenomas was 84.6% (225/266) on MR/scans, and that of small microadenomas was 87.2% (34/39) on dynamic enhanced MRI scans. Preoperative endocrinological tests of 199 cases supported the diagnosis of typical Cushing's disease, while the other 67 cases had atypical endocrinological results. The endocrinological cure rate, remission rate, and inefficacy rate were 85.7%, 7.9%, and 6. 4%, respectively. There was no difference in the initial endocrinological cure rate between the patients with positive and normal MRI results (90% vs. 87. 8%, P =0. 904). Conclusions Enhanced coronal pituitary MR/ is helpful for preoperative localization of ACTH-secreting pituitary microadenoma. Dynamic enhanced MR/may improve detection rate of microadenoma. There is no marked difference in the surgical results for patients with preoperative MR/results indicating presence or absence of microadenoma.
文摘AIM: Glucocorticoid (GC) resistant ulcerative colitis (UC) remains a serious disease and is difficult to manage. Although the molecular basis of GC insensitivity is still unknown, GC receptors (GRAAA and GRp) may play an important role in it. This study was aimed to investigate the relationship between the expression of GRa and GRp in colonic mucosal cells of patients with UC, the efficacy of GC therapy and the intensity of inflammation. METHODS: Twenty-five cases of UC were classified into: GC sensitive (n = 16) and GC resistant (n - 9) cases. Patients consisted of mild (n = 6), moderate (n = 8) and severe (n = 11) cases. GRa and GRp expression in colonic mucosal specimens were investigated by immunohistochemistry, and compared between GC resistant and sensitive groups, and also among various degrees of inflammation. RESULTS: All cases were positive for GRa and GRp expression. Both positive association between GRa expression and the response of UC to GC and strong negative association between GRp expression and the response of UC to GC were identified. There was no significant association between GRa/GRp expression and the degree of inflammation of UC. CONCLUSION: These findings suggest that both GRa and GRp may play an important role in the action of GC, and that GRp functions as a dominant negative inhibitor of GRa. Expression of GRa and GRp in colonic mucosal cells of patients with UC may serve as predictors of glucocorticoid response, but can not function as markers of inflammatory intensity.
基金Supported by the Social Development Guide Projects of Science and Technology Committee of Jiangsu Province in 2005 (BS2005629)"The Six Major Expert Peaks" Projects of Jiangsu Provincial Government in 2006 [Surentong (2006) 174]
文摘Objective: To investigate the effects of sleep electroencephalogram-modulated repetitive transcranial magnetic stimulation (SEM-rTMS) and conventional rTMS (C-rTMS) on the activity of hypothalamic-pituitary-adrenal (HPA) axis in patients with depression. Methods: In a double-blind, randomized controlled trial, 164 patients diagnosed with depression were randomized to treatment with SEM-rTMS (n=57), C-rTMS (n=55) or sham rTMS (n=52) for 30 rain every day for 10 d. Before and after treatment plasma concentrations of adrenocorticotropic hormone (ACTH) and cortisol (CORT) were measured, and the 24-item Hamilton Depression Rating Scale (HAMD-24) was used for assessment. Results: The HAMD-24 scores and plasma ACTH and CORT concentrations of these depressive patients before treatment were significantly different from those of the normal control group (P〈0.05). The HAMD-24 scores and plasma ACTH and CORT concentrations in the SEM-rTMS group and conventional rTMS group were decreased significantly (P〈0.05). There was a significant positive correlation between the HAMD-24 scores and plasma ACTH (n=240, r=0.105, P=0.048) and CORT concentrations (n-240, r=0.126, P=0.023) in the patients with depression before and after treatment. Conclusion: The antidepressant effect of rTMS, including SEM-rTMS, may be related to its decreasing HPA axis activity. (This trail was registered. No: ChiCTR-TRC-00000465)