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  • Nature Publishing Group (NPG)  (23)
  • MDPI Publishing  (17)
  • Blackwell Science Ltd  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    International journal of dermatology 43 (2004), S. 0 
    ISSN: 1365-4632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    European journal of neuroscience 20 (2004), S. 0 
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Our previous data based on an imaging study suggested that, in cat area 17, the representations of cardinal orientations overlap less than the representation of their nearby angles. The purpose of this study was to further investigate the underlying single-cell properties. Optical imaging was performed first to map the cortical regions corresponding to the four principal contours, the two cardinals and the two obliques. The cortical region activated by a principal orientation but not by the +10° or −10° neighbouring angles, namely the area with optically relative independent orientation selectivity (RIOS), was mapped together with the regions that overlapped with the +10° and/or −10° neighbouring angles (non-RIOS). Electrode penetrations were targeted to the RIOS and non-RIOS regions in each of the four orientations. A comparison between the RIOS and the non-RIOS regions documented a significantly higher percentage of cells with the orientation preference of the cardinal orientations in the cardinal RIOS region than that seen in the other regions. Additionally, the difference in the tuning width of cells between the RIOS and non-RIOS in the cardinal region was significantly larger than the difference between the RIOS and non-RIOS in the oblique region. The cells in the cardinal RIOS region were tuned more sharply and the cells in cardinal non-RIOS region more broadly than the oblique RIOS and/or the non-RIOS region, which showed no significant difference. These data strongly suggest the existence of functional segregation in the region corresponding to the cardinal contours.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    International journal of dermatology 43 (2004), S. 0 
    ISSN: 1365-4632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A 13-year-old female presented complaining of swelling of the skin and purplish red papules and nodules on her left leg. These lesions had been present from early childhood and had slowly enlarged, increased in number, and become more verrucous. At the age of 8 years, one of the nodules had been excised by laser, but recurrence was noted within a few months. There was occasional pain and bleeding from the lesion. Physical examination revealed a group of several well-circumscribed, hyperkeratotic, blue-red, vascular plaques arranged linearly along the inside aspect of her left lower extremity, ranging in size from 0.5 to 4.0 cm in diameter (〈link href="#f1"〉Fig. 1). Smaller, discrete satellite nodules with a similar appearance were noted in the vicinity.〈figure xml:id="f1"〉1〈mediaResource alt="image" href="urn:x-wiley:00119059:IJD2261:IJD_2261_f1"/〉Blue-red, hyperkeratotic vascular plaques arranged linearly along the left lower extremityHistopathologic examination showed hyperproliferation and hyperkeratosis of the epidermis. The superficial dermis showed multiple, thin-walled, dilated blood-filled spaces (〈link href="#f2"〉Fig. 2). Similar spaces were present in the lower dermis and subcutaneous tissue. A diagnosis of verrucous hemangioma was made.〈figure xml:id="f2"〉2〈mediaResource alt="image" href="urn:x-wiley:00119059:IJD2261:IJD_2261_f2"/〉Dermatohistopathology revealing hyperproliferation and hyperkeratosis of the epidermis, and multiple dilated blood-filled spaces in the dermis and subcutaneous tissue (hematoxylin and eosin, ×20)
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 2013-07-10
    Description: The aim of this study was to investigate the possible protective role of sodium selenite on aflatoxin B1-induced oxidative stress and apoptosis in spleen of broilers. Two hundred one-day-old male broilers, divided into five groups, were fed with basal diet (control group), 0.3 mg/kg AFB1 (AFB1 group), 0.3 mg/kg AFB1 + 0.2 mg/kg Se (+Se group I), 0.3 mg/kg AFB1 + 0.4 mg/kg Se (+Se group II) and 0.3 mg/kg AFB1 + 0.6 mg/kg Se (+Se group III), respectively. According to biochemical assays, AFB1 significantly decreased the activities of glutathione peroxidase, total superoxide dismutase, glutathione reductase, catalase and the level of glutathione hormone, while it increased the level of malondialdehyde. Moreover, AFB1 increased the percentage of apoptosis cells by flow cytometry and the occurrence of apoptotic cells by TUNEL assay. Simultaneous supplementation with sodium selenite restored these parameters to be close to those in control group. In conclusion, sodium selenite exhibited protective effects on AFB1-induced splenic toxicity in broilers by inhibiting oxidative stress and excessive apoptosis.
    Print ISSN: 1661-7827
    Electronic ISSN: 1660-4601
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by MDPI Publishing
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  • 5
    Publication Date: 2015-01-29
    Description: Nature Genetics 47, 158 (2015). doi:10.1038/ng.3178 Authors: Zheng Hu, Da Zhu, Wei Wang, Weiyang Li, Wenlong Jia, Xi Zeng, Wencheng Ding, Lan Yu, Xiaoli Wang, Liming Wang, Hui Shen, Changlin Zhang, Hongjie Liu, Xiao Liu, Yi Zhao, Xiaodong Fang, Shuaicheng Li, Wei Chen, Tang Tang, Aisi Fu, Zou Wang, Gang Chen, Qinglei Gao, Shuang Li, Ling Xi, Changyu Wang, Shujie Liao, Xiangyi Ma, Peng Wu, Kezhen Li, Shixuan Wang, Jianfeng Zhou, Jun Wang, Xun Xu, Hui Wang & Ding Ma Human papillomavirus (HPV) integration is a key genetic event in cervical carcinogenesis. By conducting whole-genome sequencing and high-throughput viral integration detection, we identified 3,667 HPV integration breakpoints in 26 cervical intraepithelial neoplasias, 104 cervical carcinomas and five cell lines. Beyond recalculating frequencies for the previously reported frequent integration sites POU5F1B (9.7%), FHIT (8.7%), KLF12 (7.8%), KLF5 (6.8%), LRP1B (5.8%) and LEPREL1 (4.9%), we discovered new hot spots HMGA2 (7.8%), DLG2 (4.9%) and SEMA3D (4.9%). Protein expression from FHIT and LRP1B was downregulated when HPV integrated in their introns. Protein expression from MYC and HMGA2 was elevated when HPV integrated into flanking regions. Moreover, microhomologous sequence between the human and HPV genomes was significantly enriched near integration breakpoints, indicating that fusion between viral and human DNA may have occurred by microhomology-mediated DNA repair pathways. Our data provide insights into HPV integration-driven cervical carcinogenesis.
    Print ISSN: 1061-4036
    Electronic ISSN: 1546-1718
    Topics: Biology , Medicine
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  • 6
    Publication Date: 2014-12-10
    Description: Article So-called two-dimensional superconductivity has been reported in several material systems but just how thin a system can be and maintain a superconducting state has been difficult to determine. Da Jiang and colleagues demonstrate that Bi2Sr2CaCu2O8+ x continues to be superconducting even when it is just half a unit cell thick. Nature Communications doi: 10.1038/ncomms6708 Authors: Da Jiang, Tao Hu, Lixing You, Qiao Li, Ang Li, Haomin Wang, Gang Mu, Zhiying Chen, Haoran Zhang, Guanghui Yu, Jie Zhu, Qiujuan Sun, Chengtian Lin, Hong Xiao, Xiaoming Xie, Mianheng Jiang
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2015-03-18
    Description: We aimed to investigate the clinicoradiologic determinants of negative diffusion-weighted image (DWI) results in patients with acute cerebral infarction (ACI). The medical records were reviewed of ACI patients. Patients were divided to the DWI positive and negative group. Positive DWI was used as independent variable and patients' clinicoradiologic factors were used as co-variables for multivariate logistic regression analysis. 349 patients received initial cerebral MRI within 72 hours of admission. Lacunar infarction was most common (42.1%) followed by posterior circulation infarction (30.1%) and partial anterior circulation infarction (18.1%). The majority of the patients (72.2%) had an NIHSS score of less than 5 at admission. 316 patients (90.54%) were positive on initial DWI. Patients with smoking, initial SBP ≥ 140 or DBP ≥ 90 mmHg, initial fasting plasma glucose (FPG) ≥7.0 mmol/L, initial MRI from onset of disease 〉1 d and anterior circulation infarction were liable to show positive DWI. Furthermore, DWI negative patients had significantly lower NIHSS scores (IQR 0,1,2) than DWI positive patients (IQR 1,2,4) (P = 0.000) at two weeks post onset of acute cerebral infarction. In conclusion, multiple clinicoradiologic factors are associated with negative and positive DWI and further delineation of these factors is required in future prospective studies. Scientific Reports 5 doi: 10.1038/srep08910
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
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  • 8
    Publication Date: 2015-09-18
    Description: Nowadays, sensor development focuses on miniaturization and non-contact measurement. According to the D-dot principle, a D-dot voltage sensor with a new structure was designed based on the differential D-dot sensor with a symmetrical structure, called an asymmetric open D-dot voltage sensor. It is easier to install. The electric field distribution of the sensor was analyzed through Ansoft Maxwell and an open D-dot voltage sensor was designed. This open D-voltage sensor is characteristic of accessible insulating strength and small electric field distortion. The steady and transient performance test under 10 kV-voltage reported satisfying performances of the designed open D-dot voltage sensor. It conforms to requirements for a smart grid measuring sensor in intelligence, miniaturization and facilitation.
    Electronic ISSN: 1424-8220
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Published by MDPI Publishing
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  • 9
    Publication Date: 2014-10-24
    Description: Article Multilevel societies (MLS) are a complex form of group organization found in mammals, yet the origin of MLS is poorly understood. Here the authors show that MLS of the golden snub-nosed monkey evolved from the aggregation of independent one-male, multifemale units found in ancestral Asian colobines. Nature Communications doi: 10.1038/ncomms6296 Authors: Xiao-Guang Qi, Paul A. Garber, Weihong Ji, Zhi-Pang Huang, Kang Huang, Peng Zhang, Song-Tao Guo, Xiao-Wei Wang, Gang He, Pei Zhang, Bao-Guo Li
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2016-05-29
    Description: Article The ataxia-telangiectasia mutated (ATM) protein kinase is a key player in the response to DNA damage and is essential for the maintenance of cellular homeostasis. Here the authors describe the cryo-EM structure of ATM/Tel1 from fission yeast that suggests how dimerization regulates its activity. Nature Communications doi: 10.1038/ncomms11655 Authors: Xuejuan Wang, Huanyu Chu, Mengjuan Lv, Zhihui Zhang, Shuwan Qiu, Haiyan Liu, Xuetong Shen, Weiwu Wang, Gang Cai
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
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