• 제목/요약/키워드: Medical Department

검색결과 45,588건 처리시간 0.065초

BMI1 and TWIST1 Downregulated mRNA Expression in Basal Cell Carcinoma

  • Rajabpour, Fatemeh Vand;Raoofian, Reza;Youssefian, Leila;Vahidnezhad, Hassan;Shahshahani, Mostafa Mirshams;Fathi, Hamidreza;Noormohammadpour, Pedram;Hesari, Kambiz Kamyab;Hashemzadeh-Chaleshtori, Morteza;Tabrizi, Mina
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권8호
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    • pp.3797-3800
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    • 2014
  • Background: BMI1, TWIST1 and SNAI2/SLUG have been implicated in aggressive behavior of squamous cell carcinoma (SCC) and melanoma and BMI1 expression could identify subtypes of Merkel cell carcinoma (MCC). However, BMI1, TWIST1 and SNAI2 expression levels in basal cell carcinomas (BCCs) have not been elucidated. We hypothesized BCC could be a good model system to decipher mechanisms which inhibit processes that drive tumor metastasis. The aim of this study was to examine the mRNA expression level of BMI1, TWIST1, and SNAI2 in BCCs. Materials and Methods: Thirty-five fresh non-metastatic BCC tissue samples and seven fresh normal skin tissue samples were evaluated by real-time RT-PCR. Results: BMI1 and TWIST1 demonstrated marked down-regulation (p<0.00l, p=0.00l respectively), but SNAI2 showed no significant change (p=0.12). Conclusions: Previous literature has clearly demonstrated a positive association between BMI1 and TWIST1 expression and metastatic BCC, aggressive SCC and melanoma. Here, we demonstrated a negative association between BMI1 and TWIST1 mRNA expression level and BCC.

Taurine Regulates Mitochondrial Function During 7,12-Dimethyl Benz[a]anthracene Induced Experimental Mammary Carcinogenesis

  • Vanitha, Manickam Kalappan;Priya, Kalpana Deepa;Baskaran, Kuppusamy;Periyasamy, Kuppusamy;Saravanan, Dhravidamani;Venkateswari, Ramachandran;Mani, Balasundaram Revathi;Ilakkia, Aruldass;Selvaraj, Sundaramoorthy;Menaka, Rajendran;Geetha, Mahendran;Rashanthy, Nadarajah;Anandakumar, Pandi;Sakthisekaran, Dhanapal
    • 대한약침학회지
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    • 제18권3호
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    • pp.68-74
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    • 2015
  • Objectives: The present study was undertaken to determine the modulatory effect of taurine on the liver mitochondrial enzyme system with reference to mitochondrial lipid peroxidation (LPO), antioxidants, major tricarboxylic acid cycle enzymes, and electron transport chain enzymes during 7,12-dimethyl benz[a]anthracene (DMBA) induced breast cancer in Sprague-Dawley rats. Methods: Animals in which breast cancer had been induced by using DMBA (25 mg/kg body weight) showed an increase in mitochondrial LPO together with decreases in enzymic antioxidants (superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR) and glutathione-S-transferase (GST)), non-enzymic antioxidants (reduced glutathione (GSH), vitamin C, and vitamin E), in citric acid cycle enzymes (isocitrate dehydrogenase (ICDH), alpha ketoglutarate dehydrogenase (alpha KDH), succinate dehydrogenase (SDH) and malate dehydrogenase (MDH)), and in electron transport chain (ETC) complexes. Results: Taurine (100 mg/kg body weight) treatment decreased liver mitochondrial LPO and augmented the activities/levels of enzymic, and non-enzymic antioxidants, tricarboxylic acid cycle enzymes and ETC complexes. Conclusion: The results of our present study demonstrated the chemotherapeutic efficacy of taurine treatment for DMBA-induced breast carcinomas.

Magnetic Resonance Image Manifestations of the Atypical Meningioma

  • Wu, Qing-Wu;Yan, Rui-Fang;Li, Qiang;Hu, Ying;Zhou, Feng-Mei;Ren, Ji-Peng;Yang, Rui-Min;Zhang, Yan
    • Asian Pacific Journal of Cancer Prevention
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    • 제14권11호
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    • pp.6337-6340
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    • 2013
  • Through retrospective analysis of 13 cases of magnetic resonance image (MRI) manifestations of atypical meningiomas confirmed by operation and pathology in the First Affiliated Hospital of Xinxiang Medical University, the objective of this study was to evaluate the diagnostic value of MRI in order to improve the accuracy rate of preoperative diagnosis. In this retrospective analysis of MRI findings for atypical meningiomas in First Affiliated Hospital of Xinxiang Medical University from January to July in 2012, the location, morphology and tumor signals and other tumor imaging characteristics were covered. In 13 cases of atypical meningioma patients of this group, most tumors were located at typical sites (10/13), mainly the falx cerebri, parasagittal, convexity, saddle area. Only two cases were at atypical locations, 1 in the cerebellar hemisphere and 1 in a lateral ventricle. Most of the tumors showed T1 and T2 isointensity signals, and necrosis, calcification, and peritumoral edema were always featured. DWI showed isointensity in 11 cases (11/13), and hyperintensity in 2. Some 9 cases had dural tail signs, 12 had accurate positioning (12/13), and 2 were postoperative recurrences. MRI has high value in the diagnosis of atypical meningiomas, with important roles in early clinical diagnosis, treatment and prognosis evaluation.

Autophagy inhibition through PI3K/Akt increases apoptosis by sodium selenite in NB4 cells

  • Ren, Yun;Huang, Fang;Liu, Yuan;Yang, Yang;Jiang, Qian;Xu, Caimin
    • BMB Reports
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    • 제42권9호
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    • pp.599-604
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    • 2009
  • Selenium possesses the chemotherapeutic feature by inducing apoptosis in cancer cell with trivial side effects on normal cells. However, the mechanism in which is not clearly understood. Emerging evidence indicates the overlaps between the autophagy and the apoptosis. In this study, we have investigated the role of autophagy in selenium-induced apoptosis in NB4 cells. We find that autophagy is suppressed in NB4 cells treated by sodium selenite, as measured by electron microscope, acridine orange staining and western blot. Moreover, selenite combined with autophagy inhibitor contributes to the up-regulation of apoptosis, while the PI3K/Akt signaling pathway is down- regulated. Consistently, when the inhibitor of PI3K was applied, the autophagic level significantly decreased. In summary, sodium selenite increases NB4 cell apoptosis by autophagy inhibition through PI3K/Akt, and the inhibition of autophagy contributes to the up-regulation of apoptosis.

Inclusion body myositis accompanied with T-cell large granular lymphocyte leukemia

  • Dong-Young Jeong;Seung-Hee Lee;Jungmin So;Ji Yon Kim;Young Chul, Kim;Miyoung Kim;Eun-Ji Choi;Eun-Jae Lee;Hyung Jun Park;Young-Min Lim;Hyunjin Kim
    • Annals of Clinical Neurophysiology
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    • 제25권2호
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    • pp.106-109
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    • 2023
  • Inclusion body myositis (IBM) is a late-onset myopathy that manifests as distinct muscle weakness in the quadriceps, finger flexors, and ankle dorsiflexors. T-cell large granular lymphocyte (T-LGL) leukemia is a late-onset clonal disorder of CD8+ cytotoxic T-cells that is often accompanied by autoimmune diseases. To date, the association between IBM and T-LGL leukemia has been infrequently reported. Here, we report a case of a patient with T-LGL leukemia who developed IBM, along with in-depth laboratory, electrophysiological, and pathologic findings.

Two Cases of Delayed Tension Pneumocephalus

  • Hong, Won-Jin;Yoo, Chan-Jong;Park, Cheol-Wan;Lee, Sang-Gu
    • Journal of Korean Neurosurgical Society
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    • 제37권1호
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    • pp.59-62
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    • 2005
  • We describe two cases of tension pneumocephalus, one caused by ventriculoperitoneal shunt for communicating hydrocephalus, and the other caused by craniocerebral trauma. In the first case report, we examined the relationship between cerebrospinal fluid leakage and delayed onset tension pneumocephalus. The second case report, we addressed issues such as the diagnosis, management, and pathogenesis, as well as computerized tomography(CT) findings.