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De Miranda N.F.C.C.,Karolinska University Hospital | Georgiou K.,Karolinska University Hospital | Chen L.,CAS Beijing Institute of Genomics | Wu C.,Karolinska University Hospital | And 10 more authors.
Blood | Year: 2014

Next-generation sequencing studies on diffuse large B-cell lymphomas (DLBCLs) have revealed novel targets of genetic aberrations but also high intercohort heterogeneity. Previous studies have suggested that the prevalence of disease subgroups and cytogenetic profiles differ between Western and Asian patients. To characterize the coding genome of Chinese DLBCL, we performed whole-exome sequencing of DNA derived from 31 tumors and respective peripheral blood samples. The mutation prevalence of B2M, CD70, DTX1, LYN, TMSB4X, and UBE2A was investigated in an additional 105 tumor samples. We discovered 11 novel targets of recurrent mutations in DLBCL that included functionally relevant genes such as LYN and TMSB4X. Additional genes were found mutated at high frequency (≥10%) in the Chinese cohort including DTX1, which was the most prevalent mutation target in the Notch pathway. We furthermore demonstrated that mutations in DTX1 impair its function as a negative regulator of Notch. Novel and previous unappreciated targets of somatic mutations in DLBCL identified in this study support the existence of additional/alternative tumorigenic pathways in these tumors. The observed differences with previous reports might be explained by the genetic heterogeneity of DLBCL, the germline genetic makeup of Chinese individuals, and/or exposure to distinct etiological agents. © 2014 by The American Society of Hematology. Source

Xie Y.-J.,Sun Yat Sen University | Yang Z.,Sun Yat Sen University | Fan Z.-P.,Sun Yat Sen University | Luo Y.-M.,Guangzhou Institute of Respiratory Disease
Tien Tzu Hsueh Pao/Acta Electronica Sinica | Year: 2010

As weak bioelectricity signals, the diaphragmatic electromyographic (EMGdi) signals are always disturbed by the strong electrocardiography (ECG) signals. A new ECG cancellation algorithm with an application of wavelet analysis is presented in this paper, which combines ECG locating and wavelet threshold. According to the analysis of wavelet coefficients of different scales, this algorithm finds the range of ECG interference by the correlation coefficients, and then processes the coefficients in the ECG scope by a wavelet threshold algorithm of absolute mean. The experimental results show that the method cancels the ECG interference in EMGdi availably and reserve its signal characteristics effectively, which offers good conditions for the diagnosis of respiratory diseases with EMGdi signals. Source

Zhou W.,Chinese Academy of Sciences | Hu W.,Chinese Academy of Sciences | Hu W.,Guangzhou Institute of Respiratory Disease
Future Medicinal Chemistry | Year: 2013

Alzheimer's disease (AD) is complicated and difficult to fully understand, it might need multiple drug-discovery strategies to combat the disease. Regardless of the cause of AD, neuronal death in the brain plays a key role in AD progression and is directly linked to neuroinflammation. Thus, the regulation of neuroinflammatory processes might be a practical strategy for the treatment of AD. This review highlights the development of anti-neuroinflammatory agents that have shown promise in vitro or in vivo by attenuating microglial activation or cognitive decline. The agents are categorized based on the related signaling pathways, including the receptor for advanced glycation end products, p38 MAPKs, NF-κB and peroxisome proliferator-activated receptor γ and inhibitors against microglial activation lacking clear mechanisms. These anti-neuroinflammatory agents support the concept and represent important chemical probes for the development of anti-neuroinflammatory drugs for the treatment of AD. © 2013 Future Science Ltd. Source

Li H.,Guangzhou Institute of Respiratory Disease
Nan fang yi ke da xue xue bao = Journal of Southern Medical University | Year: 2013

To study the different expressions of glypican-3 in lung squamous cell carcinoma and adenocarcinoma and explore the association of glypican-3 with the prognosis of the patients. Glypican-3 expression was detected immunohistochemically in the tumor tissues and adjacent tissues from 48 cases of lung squamous cell carcinoma and adenocarcinoma. Kaplan-Meier method and log-rank test were used for survival analysis of the patients. Glypican-3 expression was detected in the tumor tissues in 29.2% (14/48) of the cases, but not in the adjacent tissues. Of the 22 patients with lung squamous cell carcinoma, 12 (54.5%) showed positive glypican-3 expression in the tumor tissue, a rate significantly higher than that in patients with lung adenocarcinoma [7.7% (2/26), P<0.01]. In all the glypican-3-positive cases, the tumor tissues showed stronger glypican-3 expression in cases with lymph node metastasis or poor tumor differentiation. Kaplan-Meier survival analysis did not indicate a significant correlation of glypican-3 expression with the prognosis of the lung cancer patients. Patients with lung squamous cell carcinoma have higher glypican-3 expressions in the tumor tissues than those with lung adenocarcinoma, suggesting the value of glypican-3 protein as a potential marker to detect lung squamous cell carcinoma. Source

Quanjer P.H.,Erasmus Medical Center | Stanojevic S.,University College London | Cole T.J.,University College London | Baur X.,Universitatsklinikum Hamburg Eppendorf | And 7 more authors.
European Respiratory Journal | Year: 2012

The aim of the Task Force was to derive continuous prediction equations and their lower limits of normal for spirometric indices, which are applicable globally. Over 160,000 data points from 72 centres in 33 countries were shared with the European Respiratory Society Global Lung Function Initiative. Eliminating data that could not be used (mostly missing ethnic group, some outliers) left 97,759 records of healthy nonsmokers (55.3% females) aged 2.5-95 yrs. Lung function data were collated and prediction equations derived using the LMS method, which allows simultaneous modelling of the mean (mu), the coefficient of variation (sigma) and skewness (lambda) of a distribution family. After discarding 23,572 records, mostly because they could not be combined with other ethnic or geographic groups, reference equations were derived for healthy individuals aged 3-95 yrs for Caucasians (n=57,395), African-Americans (n=3,545), and North (n=4,992) and South East Asians (n=8,255). Forced expiratory value in 1 s (FEV1) and forced vital capacity (FVC) between ethnic groups differed proportionally from that in Caucasians, such that FEV1/FVC remained virtually independent of ethnic group. For individuals not represented by these four groups, or of mixed ethnic origins, a composite equation taken as the average of the above equations is provided to facilitate interpretation until a more appropriate solution is developed. Spirometric prediction equations for the 3-95-age range are now available that include appropriate age-dependent lower limits of normal. They can be applied globally to different ethnic groups. Additional data from the Indian subcontinent and Arabic, Polynesian and Latin American countries, as well as Africa will further improve these equations in the future. Copyright©ERS 2012. Source

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