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find Keyword "肥大" 27 results
  • 先天性视网膜色素上皮肥大一例

    Release date:2016-09-02 05:58 Export PDF Favorites Scan
  • 肥大细胞对肠易激综合征影响的研究进展

    肠易激综合征(irritable bowel syndrome,IBS)是一种常见的功能性肠道疾病。其患病率呈逐年上升趋势,具有病程长,难治愈,易复发等特征,严重影响患者的生活质量。IBS发病机制尚不明确,目前尚无最佳治疗方案,因此,明确 IBS 的病因和发病机制是治疗 IBS 的首要任务。目前学术界研究表明,肥大细胞显著影响 IBS 的发生发展,其释放的活性物质在 IBS 病理生理变化过程中发挥关键性作用。该文对肥大细胞在 IBS 发生发展中的作用研究进展作一综述,为明确 IBS 发病机制,探索新的治疗靶点及开发新型治疗药物提供有价值的参考依据和新思路。

    Release date:2017-09-22 03:44 Export PDF Favorites Scan
  • DIAGNOSIS AND TREATMENT OF KLIPPEL-TRENAUNAY SYNDROME

    OBJECTIVE: To investigate the diagnostic criteria and therapeutic method of the Klippel-Trenaunay syndrome. METHODS: Among 5 cases, there were 2 males and 3 females aged from 11 days to 73 years. Vasography was carried out in all five patients and MRA was performed in one patients. RESULTS: After operation, the symptoms improved in 4 cases: the portine-like erythemas on their limbs got unclear; the focuses diminished obviously; the circumferences of the suffered limbs shrank and the ulcer healed. For following-up period was not long enough, the long term therapeatic result was still uncertain. CONCLUSION: Once the diagnosis of the Klippel-Trenaunay syndrome was made, operation should be performed as early as possible. If the surgical time is selected in prepuberty, optimal result can be expected.

    Release date:2016-09-01 10:15 Export PDF Favorites Scan
  • Application of liposuction technique assisted superomedial pedicle with vertical incision in reduction mammaplasty

    ObjectiveTo explore the effectiveness of liposuction technique assisted superomedial pedicle with a vertical incision in reduction mammaplasty.MethodsBetween March 2014 and March 2019, 65 patients (127 sides) with breast hypertrophy had undergone breast reduction by using liposuction technique assisted superomedial pedicle with a vertical incision. The patients were 21 to 58 years old, with an average of 42.2 years. Body mass index ranged from 18.8 to 26.5 kg/m2, with an average of 21.3 kg/m2. Among them, 62 cases were bilateral operations and 3 cases were unilateral operation. The degree of mastoptosis was rated as degreeⅡ in 73 sides and degree Ⅲ in 54 sides according to the Regnault criteria.ResultsThe unilateral breast removed 432 g on average (range, 228-932 g); the distance of nipple upward was 4.5-9.5 cm (mean, 6.5 cm); the volume of unilateral liposuction was 50-380 mL (mean, 148 mL). There were 2 sides (1.58%) of unilateral intramammary hematomas after operation, 4 sides (3.15%) of bilateral breast vertical incisions slightly split, and 1 side (0.79%) of the nipple-areola epidermis necrosis. All patients were followed up 6 months to 5 years, with an average of 18 months. During the follow-up, there was no evident re-dropping of the breast and no enlargement of the areola. No patient underwent scar excision. At last follow-up, the effectiveness was evaluated by the surgeons. There were 52 cases with very satisfactory, 10 cases with satisfactory, and 3 cases with unsatisfactory for the breast shape and symmetry. There were 51 cases with very satisfactory, 11 cases with satisfactory, and 3 cases with unsatisfactory for the nipple position and areola diameter. The incision scar was obvious in 25 cases and was not obvious in 40 cases. The results of self-assessment showed very satisfactory for the breast shape in 48 cases, satisfactory in 12 cases, and unsatisfactory in 5 cases; very satisfactory for the incision scar in 40 cases, satisfactory in 17 cases, and unsatisfactory in 8 cases. Overall evaluation of the patient was very satisfactory in 52 cases, satisfactory in 7 cases, and unsatisfactory in 6 cases.ConclusionThe liposuction technique assisted superomedial pedicle with a vertical incision in reduction mammaplasty is a safe and reliable surgical method with a satisfactory result.

    Release date:2020-07-07 07:58 Export PDF Favorites Scan
  • TREATMENT OF GYNECOMASTIA BY A COMBINED METHOD OF LIPOSUCTION AND SEMICIRCULAR PERIAREOLAR INCISION GLANDULAR ORGAN PARTIAL RESECTION

    Objective To evaluate the effect of the combined method of l iposuction and semicircular periareolar incision glandular organ partial resection in the treatment of gynecomastia. Methods From June 2004 to June 2006, 40 patients, aged 11-41 years old, were treated, with no-nodule (n=10), nodule (n=22) and female-breast-l ike with nodules (n=8). Three patients were unilateral and 37 ones were bilateral. The levels of serum prolactin, luteinizing hormone, foll icle stimulating hormone, estradiol, testosterone and cortisol were normal in 38 patients, while in the other 2 patients, the levels ofserum prolactin, luteinizing hormone, foll icle stimulating hormone and estradiol were higher than normal, and the testosterone level was lower. Li posuction alone was performed in 10 no-nodule patients (lei po-type), and combined l i posuction and semicircular periareolar incision glandular organ partial resection were conducted in the other 30 patients (lei po-glandular type). Results Except for 2 cases in which hematoma and a small amount of effusion were found on the first and second day postoperatively and then obtained heal ing by first intention right after hematoma removal in time, all the other patients’ incisions obtained heal ing by first intention. Ni pple numbness occurred in 3 cases on the first day postoperatively and no special treatment was conducted. There was still nipple hypesthesia in these 3 cases after 6-month follow-up. There were no compl ications such as hematoma, effusion, nipple and mammary areola necrosis, and nipple hypesthesia in other patients. All the 40 patients were followed up for 6-24 months (13 months on average). They were satisfied with their chest figures and no recurrence was observed. Conclusion The combined method of l iposuction and semicircular periareolar incision glandular organ partial resection in the treatment of gynecomastia has many advantages, such as safe, micro-scars, natural and beautiful male breast figures as well as high patients’ satisfaction.

    Release date:2016-09-01 09:19 Export PDF Favorites Scan
  • 心肌梗死后残存心肌细胞肥大性改变及其IGF1、IGF1R的表达

    目的 观察心肌梗死后残存心肌细胞肥大性改变及其胰岛素样生长因子-1(IGF-1)、胰岛素样生长因子-1受体(IGF-1R)的表达,探讨梗死心肌心肌细胞肥大的机制。 方法 取急性心肌梗死后2周、4周、8周的梗死心肌,制备单心肌细胞悬液,采用激光共聚焦扫描显微镜(Confocal)检测心肌细胞体积,采用免疫组织化学法检测心肌细胞IGF-1、IGF-1R的表达。 结果 〖HTSS〗急性心肌梗死8周梗死区域心肌细胞体积较正常区域心肌细胞增大(37 563.93±6 176.79 μm3 vs. 28 638.61±6 890.89 μm3, t=4.840,P=0.020),细胞肥大以宽度和厚度为主;梗死区域心肌细胞可见IGF1染色阳性颗粒,IGF-1表达高于正常区域心肌细胞(79.58±4.57 vs. 64.12±3.91,t=27.564,P=0.002);IGF-1R主要分布于心肌细胞膜,梗死区域心肌细胞IGF1R表达高于正常区域心肌细胞(67.02±2.56 vs. 66.73±3.49,t=3.845,P=0.042),其中以急性心肌梗死4周IGF-1R表达最高。 结论 心肌梗死后残存心肌细胞分泌IGF-1和IGF-1R,并可能在促使残存心肌细胞肥大中起了积极作用。

    Release date:2016-08-30 05:59 Export PDF Favorites Scan
  • MCEMP1 expression and its relationship with immune infiltration in gastric cancer: based bioinformatics analysis

    Objective To investigate the relationship between the expression of mast cell expressed membrane protein 1 (MCEMP1) in gastric cancer and its relationship with prognosis and tumor immune infiltration. Methods Transcriptome expression profile data and clinical data information of gastric cancer and normal samples were downloaded from TCGA database, and differentially expressed genes in gastric cancer tumor microenvironment were extracted using R 4.0.5 software. Protein-protein interaction network of differentially expressed genes was constructed by using STRING online website, protein-protein interaction network and univariate Cox proportional hazards regression analysis were used for cross-tabulation analysis to obtain key genes. Kruskal-Wallis rank sum test was used to investigate the correlation between key genes and clinicopathological features. The possible signaling pathways involved in key genes were predicted by gene set enrichment analysis. We further analyzed the relationship between expression of key gene and the level of immune infiltration and immune molecules in gastric cancer by TISIDB online database and CIBERSORT algorithm. Results A total of 760 differentially expressed genes in gastric cancer were found and a key gene of MCEMP1 was derived from cross-tabulation analysis based on the results of protein-protein interaction network and univariate Cox proportional hazards regression analysis. Expression of MCEMP1 was significantly upregulated in gastric cancer tissues (P<0.001), and survival analysis showed that the overall survival rate of the group with high expression level of MCEMP1 was lower than that of low expression [HR=1.176, 95%CI (1.066, 1.297), P=0.046]. Expression of MCEMP1 also correlated with age, T-stage, and clinical stage of gastric cancer (P<0.05) , and expression of MCEMP1 was significantly associated with a variety kinds of immune cells and expression of immune molecules (P<0.05). Conclusion MCEMP1 is a potential prognostic marker for gastric cancer and is associated with immune infiltration in gastric cancer.

    Release date:2022-06-08 01:57 Export PDF Favorites Scan
  • Study of Mechanism Affecting Liver Cirrhosis by Splenectomy

    ObjectiveTo investigate the possible mechanism affecting liver cirrhosis by splenectomy. MethodsBy subcutaneous administration of 20% carbon tetrachloride(CCl4), liver cirrhosis models were established in splenectomy and nonsplenectomy groups. After HE staining, special staining and immunohistochemical staining, mast cell, Kupffer’s cell and Ito cell were counted under optical microscope. Liver pathological sections and the dynamic changes of these cells in mice were studied respectively in comparison with the normal group.ResultsThe incidence of liver cirrhosis in nonsplenectomy group was significantly higher than that in splenectomy group after the 16th injection of CCl4 (P<0.05). The count of mast cell was much higher than that in splenectomy group after the 4th and the 8th injection (P<0.05). Kupffer’s cell and Ito cell significantly increased after the 12th and the 16th injection in nonsplenectomy group compared with splenectomy group (P<0.05). ConclusionSplenectomy may decline the incidence of hepatic cirrhosis caused by multifactors. In the early stage, splenectomy influences the migration, maturation and accumulation of mast cell. In the middle and late stage, it influences the proliferation of Kupper’s cell and cytokine secretion, thus the Ito cells are activated and proliferation is inhibited, in which extracellular matrix decreases in amount and the degree of hepatic fibrosis is reduced.

    Release date:2016-08-28 04:49 Export PDF Favorites Scan
  • Preliminary Investigation into the Mechanism of Cardiomyocyte Hypertrophy Induced by Visfatin

    The aim of the current study is to investigate the effect of visfatin on cardiomyocyte hypertrophy. Cultured H9c2 cardiomyocytes were exposed to visfatin at different concentrations for different periods of time, and the markers of cardiomyocyte hypertrophy were detected. Moreover, pravastatin, the inhibitor of endoplasmic reticulum stress (ERS) or thapsigargin, an ERS agonist was used respectively to pre-treat the cells before visfatin stimulation. F-actin staining was performed to measure the cell surface change. The mRNA expressions of atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP)and ERS markers including glucose-regulated protein 78(GRP78), C/EPB homologous protein (CHOP) and activating transcription factor 6 (ATF6) were assessed by real time RT-PCR. The change of protein level of GRP78 and CHOP was detected by Western blot. The experimental data demonstrated that exposure to 100 or 150 ng/mL concentrations of visfatin for 24 h, or 100 ng/mL of visfatin for 24 or 48 h, significantly increased the expression of markers for cardiomyocyte hypertrophy. Visfatin stimulation provoked ERS in H9c2 cells. Furthermore, pre-treatment with pravastatin partially inhibited the visfatin-induced mRNA expression of ANP and BNP in H9c2 cells, whereas thapsigargin promoted the visfatin-induced expression of cardiomyocyte hypertrophy markers. The results suggest that visfatin might induce cardiomyocyte hypertrophy via ERS -dependent pathways.

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  • Research progress of mast cells in the mechanism of intestinal injury caused by deep hypothermic circulatory arrest

    Deep hypothermic circulatory arrest (DHCA) is an important assistant technique for complex cardiac surgery, which creates convenient operating conditions for surgery, and is also one of the measures to protect the brain during operation. However, the complications caused by this technique cannot be ignored, and it should be noticed that the occurrence of intestinal injury is relatively insidious, but brings great pain to patients and significantly reduces the quality of life after operation. Studies have shown that intestinal ischemia-reperfusion injury is induced by DHCA. It causes mast cells to activate and release many inflammatory mediators that destroy the intestinal mucosal epithelium barrier, and eventually lead to intestinal injury. This article reviewed the research progress of mast cells in the mechanism of DHCA-induced intestinal injury.

    Release date:2019-03-01 05:23 Export PDF Favorites Scan
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