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Objective:To investigate the efficacy and safety of dual wavelength pulsed dye laser combined with 30% supramolecular salicylic acid in the treatment of moderate and severe facial acne.Methods:Sixty patients with moderate and severe acne that visited the Dermatology Department of the First Affiliated Hospital of Chongqing Medical University from May 2020 to January 2021, were selected and randomly divided into observation group and control group, with 30 patients in each group. The observation group was given dual-wavelength pulsed dye laser combined with 30% supramolecular salicylic acid. 30% supramolecular salicylic acid was used once every two weeks, for a total of six times. Dual-wavelength pulsed dye laser was given once a month, for a total of three times. The control group was only given dual-wavelength pulsed dye laser, once a month, a total of three times.Results:Twenty-two cases (73.33%) in the observation group were effective, while 14 cases (46.67%) in the control group were effective. The efficacy of the observation group was better than that of the control group, and the difference was statistically significant (χ 2=4.44, P<0.05). There were no obvious adverse reactions in both groups. Conclusions:Dual-wavelength pulsed dye laser combined with 30% supramolecular salicylic acid is effective and safe in the treatment of moderate and severe facial acne, which is worth popularizing.
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Background: Visceral hypersensitivity is considered as a key pathophysiological mechanism involved in functional gastrointestinal disorders (FGIDs). Visceral nociception and hyperalgesia is existed extensively following exposure to post-traumatic stress disorder (PTSD), however, its molecular mechanism in intestinal tract is unclear. Aims: To explore the potential role of N-Myc downstream-regulated gene 2 (NDRG2) in intestinal tract for mediating visceral hypersensitivity following exposure to PTSD. Methods: PTSD model was established by single prolonged stress (SPS). SD rats were divided into normal control group, CTX group, PTSD group and PTSD+CTX group. Mice were divided into normal control group, PTSD group, NDRG2
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Objective To observe the clinical efficacy of 595 nm pulsed dye laser and 595 nm pulsed dye laser combined with glycolic acid on patients with acne vulgaris.Methods From October 2017 to October 2018,60 patients with acne vulgaris (28 men,32 women,average age of 24.25 years) were divided randomly into two groups:one group was treated by 595 nm pulsed dye laser only,and other group used 595 nm pulsed dye laser combined with glycolic acid.Results The total effective rates of two groups were 50.00％ (15/30 cases) and 77.00％ (23/30 cases),respectively,and there was a significant statistic difference between the two groups (x2 =4.59,P＜0.05).Conclusions Patients with acne vulgaris have more significant benefits from 595 nm pulsed dye laser combind with glycolic acid than the laser alone.
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Objective To investigate the expression of microRNA-134 ( miR-134 ) , CREB and pCREB in the temporal lobe tissue of patients and epileptic rats and to explore their roles in pathogenesis of epilepsy.Methods Tempo-ral lobe tissue samples of 14 patients with refractory epilepsy and 10 non-epileptic patients, and hippocampus and brain tis-sue samples of 42 rats were used in this study.Forty-two healthy adult male Sprague-Dawley rats were randomly divided in-to 6 epilepsy groups (24 h, 72 h, 7 d, 14 d, 30 d, and 60 d after kindling epilepsy) and a normal control group (n=6 for all groups) .The rat model of epilepsy was generated by intraperitoneal injection of 127 mg/kg lithium chloride and 16-20 h later, 35 mg/kg pilocarpine.In the temporal lobe tissue of patients and hippocampal tissue of rats, the expression level of miR-134 was detected by real-time polymerase chain reaction.The expression levels of CREB and pCREB were de-termined by Western blot, and CREB and pCREB localization was assessed by immunohistochemistry.Results Compared with the control rats, the expression of miR-134 was significantly decreased in the temporal lobe tissue of experimental rats at 72 h,7 d,14 d, 60 d after kindling (P＜0.05),and no significant change at 24 h and 30 d after kindling (P>0.05). Expression of miR-134 in patients with refractory epilepsy was significantly lower than that of the controls ( P＜0.05 ) , while up-regulation of CREB expression was at the same time points (P＜0.05).Up-regulation of pCREB expression was at all the time points after kindling (P＜0.05).CREB and p-CREB expressions were seen in the nuclei of neurons, and significantly higher in patients with refractory epilepsy and epileptic rats.Conclusions The expression of miR-134 is sig-nificantly decreased and that of CREB and pCREB was significantly increased in the temporal lobe tissue of patients with re-fractory epilepsy and the hippocampal tissue of epileptic rats.These findings indicate that the signaling pathway of miR-134/CREB/pCREB may play an important role in the pathogenesis of epilepsy.
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<p><b>OBJECTIVE</b>To investigate the expression and activity of silent information regulator 1 (SIRT1) in the temporal lobe of epileptic patients and rat models and explore its role in the occurrence and progression of epilepsy.</p><p><b>METHODS</b>The temporal lobe tissue of epileptic patients and rat models (induced by lithium-pilocarpine) were examined for SIRT1 expression using immunohistochemistry and Western blotting and also for SIRT1 activity using SIRT1 Deacetylase Assay Kit.</p><p><b>RESULTS</b>Immunohistochemistry detected positive SIRT1 expression mainly in the cytoplasm of the neurons in both human and rat brains, and the epileptic groups showed stronger SIRT1 immunoreactivity than the control group. Western blotting and activity assay showed that the expression and activity of SIRT1 were significantly increased in the temporal lobe of patients with refractory epilepsy as compared with the tissues samples from non-epileptic patients (P<0.05). In the rat models of epilepsy, SIRT1 expression was up-regulated at 6, 24, and 72 h and at 7, 14, 30, and 60 days after kindling (P<0.05) and SIRT1 activity was significantly increased at 6, 24, and 72 h and at 7 and 14 days (P<0.05), with the peak level of SIRT1 expression and activity occurring at 72 h.</p><p><b>CONCLUSION</b>Up-regulation of SIRT1 expression and activity in the temporal lobe of epileptic patients and rat models may play an important role in the pathogenesis of epilepsy.</p>
Subject(s)
Adolescent , Adult , Animals , Female , Humans , Male , Rats , Young Adult , Disease Models, Animal , Epilepsy , Metabolism , Rats, Sprague-Dawley , Sirtuin 1 , Metabolism , Temporal Lobe , MetabolismABSTRACT
Objective To observe the phosphorylation of extraceUular signal-regulated kinase (p-ERK1/2) and its nuclear translocation at different time points after the hippocampal neurons were cul-tured in the magnesium-free medium, and discuss the changes of ERK1/2 signal pathway after epileptic injury of hippocampal neurons. Methods Hippocampal neurons from newly-born Wistar rats were cul-tured with NB medium and B-27 for 9 days, and then were transferred to the magnesium-free medium to induce epileptic injury to the hippocampal neurons. The distribution of p-ERK1/2 in the hippocampal neurons before and after the epileptic injury was observed under laser scanning confocal microscope, and the expression of p-ERK1/2 at different time points after culturing the hippocampal neurons in the magne-sium-free medium was detected by Western blot. Results Before the epileptic injury of hippocampal neurons, p-ERK1/2 mainly expressed in the cytoplasm and axoplasm of the neurons. While after the epi-leptic injury, the expression of p-ERK1/2 was detected in the cytoplasm, axoplasm and nucleus of the neurons. The expression of p-ERK1/2 was increased one hour after the epileptic injury, and peaked at hour 3 (p-ERK1:2.2838±0.1 186; p-ERK2:4.1 273±0.0 927). There was significant difference in the expression of p-ERK1/2 between the hippocampal neurons cultured with or without magnesium-free medium (P < 0.05). Conclusion Epileptic injury may induce increased expression of p-ERK1/2 in hippocampal neurons, and the activated ERK1/2 signal pathway may be associated with the epileptic dis-charge in neurons.
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Objective To study the changes of reactive astrocytosis after heat shock protein 70 (HSPT0) was blocked by anti-HSP70 antibody. Methods We established cell model of scratch inju-ries by in situ culture and prurification of rat astrocytcs. Anti-HSP70 antibody was added into the nutrient medium at once after injury for intervention (intervention group). Then, immunocytochemical staining of glial fibrillary acidic protein (GFAP) was done at different time points in control group and intervention group to observe astrocytosis and morphologic changes, mRNA expression of GFAP was observed by means of reverse transcriptase-polymerase chain reaction (RT-PCR). Results Compared with the con-trol group, average cell area, average dentritic length and number of dentrities of astrocytes were signifi-cantly reduced in the intervention group(P < 0.05 or P < 0.01), with down-regulated mRNA expression of GFAP (P < 0.05). Conclusion HSP70 plays a facilitative role in reactive astrocytosis after injury of astrocytes. Reactive astrocytosis can be controlled to some extent by blocking HSP70 with anti-HSP70 antibody.
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Objective To explore the pathogenic mechanisms of intractable epilepsy by searching for the differential cell signal transduction associated genes expression in intractable and non intractable epilepsy rat brain using cDNA microarray Methods Intractable epilepsy and non intractable epilepsy rat model were build The total RNAs were isolated from the brain tissues Both mRNAs from the brains of the intractable and non intractable epilepsy rats were reversely transcribed to the cDNA with the incorporation of fluorescent dUTP to prepare the hybridization probes The PCR products of 4 096 human genes were spotted on a chemical material coated glass plates in array The mixed probes were then hybridized to the cDNA microarray After high stringent washing, the cDNA microarray was scanned for the fluorescent signals and showed differences between 2 tissues Results Among the 4 096 target genes, 29 genes associated with cell signal transduction differentially expressed were identified, 10 were up regulated(34 48%) and 19 down regulated(65 52%) Conclusion cDNA microarray technology is an effective technique in screening the differentially expressed genes between intractable and non intractable epilepsy rat brain Disturbances of cell signal transduction play a role in the pathogenic mechanism of intractable epilepsy