ABSTRACT
Objective:To explore the effect of abdominal massage on the behavior of rats with neonatal hypoxia-ischemia and its mechanism.Methods:7-day-old SD rats were made as the HIBD model by the classical method of RICE and then the HIBD model rats were divided into the abdominal massage group and model group according to the random number table method, with 12 rats in each group, and 12 rats were selected as the normal group. The abdominal massage group was given abdominal massage 24 hours after the modeling, and the intervention continued for 28 days. Rats in each group underwent a balance beam test on the 7th, 14th, 21st, and 28th day of the intervention. After the intervention, HE staining was applied to observe the morphological structure of the hippocampal CA1 region of the rats; Quantitative Real-time PCR method was used to measure the serotonin receptor (5-HTR1A) in the hippocampus. The expression of cAMP, PKA and CREB in the hippocampus were measured by immunohistochemistry, and the expression of SYP protein was measured by Western blotting.Results:After the intervention, the cells in the hippocampal CA1 area of the model group were diffusely distributed, the number of neurons reduced, and the condition of inflammatory edema appeared; the cells in hippocampal CA1 area of the abdominal massage group were arranged clearly, and the condition of inflammatory edema has significantly improved; on the 21st and 28th day of the intervention, the balance beam test scores in the abdominal massage group significantly decreased ( P<0.05), and the relative expression of 5-HTR1A mRNA (1.18±0.08 vs. 0.77±0.04) in the abdominal massage group significantly increased ( P<0.05). The expression of cAMP (0.32±0.02 vs. 0.31±0.01), PKA (0.32±0.02 vs. 0.29±0.01),CREB (0.31±0.02 vs. 0.28±0.01) and SYP in the abdominal massage group significantly increased ( P<0.05). Conclusion:Abdominal massage could improve the behavior of neonatal hypoxic-ischemic rats, which may play a role on nerve repair by regulating 5-HTR1A/cAMP/PKA signaling pathway.
ABSTRACT
OBJECTIVE To evaluate the correlation between 5-HTR1A gene C- 1019G polymorphism and the efficacy of antidepressants. METHODS PubMed，Embase，Cochrane Library ，CNKI，Wanfang database ，CBM and VIP database were searched for domestic and foreign literatures on the correlation between 5-HTR1A gene C- 1019G polymorphism and antidepressant efficacy. The retrieval time limit was from the inception to February 2022. According to different outcome measures of drug response，Stata 14.0 and RevMan 5.4 software were used for meta-analysis of efficacy group and remission group ，respectively. RESULTS A total of 18 literature were included. The combined results showed that among recessive gene model in valid group ， the correlation of 5-HTR1A gene C- 1019G polymorphism with the efficacy of antidepressants had statistically significance in Asian population（GG vs. CG+CC ，OR＝0.751，95％CI＝0.585-0.964，P＝0.024）. There was statistical significance in the correlation of 5-HTR1A gene C- 1019G polymorphism and the efficacy of antidepressants in China （GG vs. CG+CC ，OR＝0.677，95％CI＝ 0.508-0.901，P＝0.007）. There was no statistical significance in the correlation of 5-HTR1A gene C- 1019G polymorphism and the efficacy of antidepressants in remission group （P＞0.05）. CONCLUSIONS In the effective group ，5-HTR1A gene C- 1019G polymorphism is correlated with the efficacy of antidepressants in the Asian population and the Chinese population ；while in the remission group ，it is not proved that this polymorphism is correlated with the efficacy of antidepressants.
ABSTRACT
OBJECTIVE: Serotonin-1A receptors (5-HTR1A) is suggested to be involved in the etiology of several psychiatric disorders including panic disorder (PD). A few imaging studies have suggested the alterations of the cingulum bundle in PD. The objective of this study is to examine the structural changes of cingulum related to the 5-HTR1A polymorphism rs6295 in the patients with PD. METHODS: Thirty-two right-handed patients with PD [11 men, 21 women; 40.34+/-13.17 (mean+/-SD) age] who met the diagnostic criteria in Structured Clinical Interview for DSM-IV were examined by means of MRI at 3 Tesla. We divided the patients with PD into CC genotype group and non CC genotype group (GG/CG genotype group) of the 5-HTR1A rs6295 polymorphism to compare the cingulum white matter connectivity. RESULTS: Tract-based spatial statistics showed significantly increased fractional anisotropy (FA) values in cingulate gyrus process of left cingulum in 5-HTR1A CC genotype compared to GG/CG genotype in PD. Significant positive correlations were shown between the Albany Panic and Phobia Questionnaire (APPQ) interoceptive fear subscale scores, the Anxiety Sensitivity Inventory-Revised fear of publicly observable anxiety reaction subscale scores and FA values of cingulate gyrus process of left cingulum in 5-HTR1A rs6295 GG/CG genotype group. In CC genotype group, APPQ total, APPQ agoraphobia subscale and APPQ social phobia subscale scores also showed significant positive correlations with FA values of hippocampal process of right cingulum. CONCLUSION: This preliminary study suggests that 5-HTR1A polymorphism may be associated with the cingulum white matter connectivity in PD.