Rare primary proximal epithelioid sarcoma in skull base: clinical analysis of four cases / 中华耳鼻咽喉头颈外科杂志

Objective@#To report the clinical and pathological features of primary proximal epithelioid sarcoma (PES) in skull base.@*Methods@#The clinical and pathological features of four cases of PES in skull base from Sanbo Brain Institute of Capital Medical University and Kunming Sanbo Brain Institute were analysed retrospectively.@*Results@#Three cases was female, and one male, the age ranged from 46 to 52 years.All cases occurred in skull base, and sellar region was the main site of involvement.Under the microscope, the tumor cells characterized by epithelioid cell changes, with or without rhabdoid tumor cells.Mitotic figure was active.Immunohistochemical staining showed that AE1/AE3, EMA and CD34 were variously expression in tumor cells.INI-1 protein was lost in all cases.Three cases were detected by FISH, and INI1 (22q11.2) gene locus was absent in them.Three patients died less than 3 months after surgery, and case 4 was under treatment after five months of surgery.@*Conclusions@#Primary PES in skull base mostly occurs in sellar region and its clinical prognosis is poor.It features with epithelioid/rhabdoid tumor cells with lack granuloma structure as distal ES.It has epithelial and mesenchymal differentiation characteristics.CD34 is always positive.INI1 gene deletion and protein loss expression are characteristic molecular alteration of PES.

VCAM-1 improves migration and invasion of human glioma cell lines / 基础医学与临床

Objective To investigate the effects of VCAM-1 on migration and invasion of glioma cell lines . Methods The techniques of lentivirus pSGU6/GFP/Neo-based VCAM-1 shRNA and EF1 a-GFP/puro-based VCAM-1 expression vector, the scratch wound healing migration and transwell invasion assays , and the Western blot and cell staining were applied to observe the effects of VCAM-1 expression levels on migration and invasion of glioma cell line cells.There are four groups in T98G cells including control, vector, scramble and shRNA-VCAM-1 groups and three groups in U251 cells covering control, vector and VCAM-1 overexpressed groups ( n=6 per group) .Results The stabled glioma cell lines of T98 G cells with down-regulated VCAM-1 and U251 cells with VCAM-1 overexpression were established by using lentivirus-based VCAM-1 shRNA and expression vector.The ability of scratch wound healing (migration activity) decreased significantly (P<0.01) in T98G cells with lower VCAM-1 expression levels, while the migration activity was obviously improved in U251 cells with overexpressed VCAM-1 ( P <0.05 ) .Similarly, the invasion ability was significantly inhibited ( P <0.05) in T98G cells with silenced VCAM-1, as well as VCAM-1 overexpression could enhance the invasion ability of U251 cells ( P<0.01 ) .Conclusions VCAM-1 improves the migration activity and invasion ability of human glioma cell line cells.

Changes of folate receptor -α protein expression in human gliomas and its clinical relevance / 中华外科杂志

<p><b>OBJECTIVE</b>To study the expression level of folate receptor α (FR-α) in glioma tissue and its clinical significance.</p><p><b>METHODS</b>Forty-eight human glioma specimens were collected from patients who underwent surgery from March 2012 to March 2013. These specimens were as follows:12 cases of glioblastoma (WHO IV), 6 cases of astrocytoma of each malignancy grade(WHO II, III), 6 cases of oligodendroastrocytoma of each malignancy grade (WHO II, III), 6 cases of oligodendroglioma of each malignancy grade (WHO II, III ). In addition, 6 cases of normal brain tissue resected from brain traumatic patients were taken as negative control, and one case of placental tissue (had got the consent of the parents and their families) was taken as positive control. The expression level of FR-α in tumor tissues was evaluated by Western blot analysis. The results of Western blot analysis were analyzed by t-test. The expression level of FR-α and Ki-67 in tumor tissues was evaluated immunohistochemistry, the results were analyzed by Kruskal-Wallis test and Nemenyi test. The correlation between the expression level of FR-α and cell proliferation index Ki-67 was analyzed by Pearson correlation analysis.</p><p><b>RESULTS</b>Western blot analysis showed that the FR-α was not expressed in normal brain tissue and oligodendroglioma tissue, but highly expressed in astrocytoma, oligodendroastrocytoma and gliomablastoma. The expression level in WHO III astrocytoma was significantly higher than in WHO II (t = 4.497, P < 0.05). FR-α was also highly expressed in oligodendroastrocytoma and its expression level in WHO III was also significantly higher than in the WHO II (t = 2.876, P < 0.05). Foremore, immunohistochemistry analysis also showed that FR-α was not expressed in oligodendroglioma, but expressed in astrocytoma, oligodendroastrocytoma and gliomablastoma. The positive rate of FR-α of WHO III was significantly higher than the WHO II astrocytoma(57.8% ± 2.2% vs. 45.7% ± 2.3%,χ(2) = 3.871, P = 0.034). In oligodendroastrocytoma, the positive rate of FR-α of WHO III was significantly higher than the WHO II(56.5% ± 5.4% vs. 37.1% ± 5.2%,χ(2) = 4.454, P = 0.021). Moreover, the expression level of FR-α in gliomablastoma was highest in all histological types of gliomas, the positive rate of FR-α was up to 65.0% ± 4.5%. Pearson correlation analysis showed that the positive rate of FR-α was positively correlated with Ki-67 index (r = 0.903, P < 0.05).</p><p><b>CONCLUSIONS</b>FR-α is expressed in astrocytoma, oligodendroastrocytoma and glioblastoma, and the expression level of FR-α is positively correlated with malignancy grade and Ki-67 index. Therefore, FR-α may be applied as a special target for diagnosis and treatment of glioma.</p>

The clinical observation of high-energy red fight combined with human-like collagen dressing in treatment of facial corticosteroid addictive dermatitis / 中国医师进修杂志

Objective To observe the efficacy of high-energy red light combined with human-like collagen dressing in treatment of facial corticosteroid addictive dermatitis.Methods Eighty-three patients with facial corticosteroid addictive dermatitis were divided into treatment group (42 cases) and control group (41 cases) by random digits table method.All patients in 2 groups were treated with ebastine 10 mg,once a day,and vitamin E cream,twice a day.At the same time,the patients in control group were given human-like collagen dressing,once a day in the first week,then 3 times/week.On the basis of control treatment,the patients in treatment group were irradiated with high-energy red light 10 min in face,2-3 times/week.The treatment of both groups lasted for 12 weeks.The symptoms,skin lesions and untoward reaction were observed after treatment of 4,8 and 12 weeks.Results After treatment of 4 weeks,there was no statistical difference in the effective rate between 2 groups (P ＞ 0.05).After treatment of 8 and 12 weeks,the effective rates in treatment group were significantly higher than those in control group [83.3％(35/42) vs.58.5％ (24/41),90.5％ (38/42) vs.65.9％ (27/41)],there were statistical differences (P ＜ 0.05).No untoward reaction was found in 2 groups.Conclusion High-energy red light combined with human-like collagen dressing is effective and safe in treatment of facial corticosteroid addictive dermatitis.

Sustained hypoxia increases membrane translocation of conventional protein kinase C isoforms in SH-SY5Y neuroblastoma cells / 中国组织工程研究

BACKGROUND: The protein kinase C (PKC) family consists of 3 groups of PKCs, namely the conventional PKC (cPKC), atypical PKC and novel PKC.Accumulating studies conducted in recent years have suggested that PKCs may play important roles in the development of cerebral ischemic/hypoxic preconditioning ( I / HPC ).OBJECTIVE: To observe membrane translocation of hypoxia-activated cPKC isoforms(α, βⅠ, βⅡ and γ) at cellular levels in a cell hypoxia model.DESIGN: Randomized block design.SETTING: Department of Neurobiology, College of Basic Medical Sciences,Capital University of Medical Sciences.MATERIALS: The experiment was completed at the Neurobiological Cell Culture Laboratory of Capital University of Medical Sciences in May 2004.Human neuroblastoma cells with the properties of neurons were maintained and passaged in this laboratory.METHODS: The activation of cPKC isoforms under hypoxic condition and changes of cPKCα, βⅠ, βⅡ and γ membrane translocation(an indicator of PKCs activation) in SH-SY5Y neuroblastoma cells in response to hypoxia (1% 02, 5% CO2 and 94% N2) for 0 to 24 hours were observed using SDS-PAGE, Western blotting and immunocytochemistry.MAIN OUTCOME MEASURES: Effect of sustained hypoxia on cPKC membrane translocation in human neuroblastoma cells was observed with SDS-PAGE, cPKC Western blotting, and immunocytochemistry.RESULTS: cPKCα, βⅠ and βⅡ membrane translocation were increased significantly ( P ＜ 0.05 ) in a time-dependent manner in response to hypoxic exposure, and the increase of cPKCβⅠ was more evident( P ＜ 0. 001 ) after 4hours of hypoxic exposure, whereas no cPKCγ was detected in SH-SY5Y neuroblastoma cells either under normoxic or hypoxic condition. The results suggested that all cPKC isoforms, epically cPKCβⅠ, could be activated by sustained hypoxia, and the absence of cPKCγ in SH-SY5Y neuroblastoma cells may be relevant to the loss of specific biological features of the cultured cells.CONCLUSION: Sustained hypoxia activates the isoforms of cPKCα, βⅠ and βⅡ in human neuroblastoma cells and induces their membrane translocation.cPKCγ isoform may not exist in human neuroblastoma cells, or the cells has lost certain biological characteristics.