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Abhijit S Deshmukh, Pallabi Mitra, Mulaka Maruthi
Cyclin-dependent kinase 7 in conjunction with CyclinH and Mat1 activates cell cycle CDKs and is a part of the general transcription factor TFIIH. Role of Cdk7 is well characterized in model eukaryotes however its relevance in protozoan parasites has not been investigated. This important regulator of key processes warrants closer examination particularly in this parasite given its unique cell cycle progression and flexible mode of replication. We report functional characterization of TgCdk7 and its partners TgCyclinH and TgMat1...
October 19, 2016: Scientific Reports
Zhao-Ru Ju, Hui-Jun Wang, Xiao-Jing Ma, Duan Ma, Guo-Ying Huang
BACKGROUND: The most typical cardiac abnormality is conotruncal defects (CTDs) in patients with 22q11 deletion syndrome (22q11DS). HIRA (histone cell cycle regulator) gene, as one of the candidate genes located at the critical region of 22q11DS, was reported as possibly relevant to CTD in animal models. This study aimed to analyze the level of expression of the HIRA gene in tetralogy of Fallot (TOF) patients and the potential DNA sequence variations in the promoter region. METHODS: The messenger RNA (mRNA) expression was examined with quantitative real-time polymerase chain reaction in 39 myocardial tissues of the right ventricular outflow tract (RVOT) from TOF patients and 4 myocardial tissues of RVOT from noncardiac death children...
2016: Chinese Medical Journal
Shinji Iida, Tadaaki Mashimo, Takashi Kurosawa, Hironobu Hojo, Hiroya Muta, Yuji Goto, Yoshifumi Fukunishi, Haruki Nakamura, Junichi Higo
The C-terminal domain (CTD) of tumor suppressor protein p53 is an intrinsically disordered region that binds to various partner proteins, where lysine of CTD is acetylated/nonacetylated and histidine neutralized/non-neutralized. Because of the flexibility of the unbound CTD, a free-energy landscape (FEL) is a useful quantity for determining its statistical properties. We conducted enhanced conformational sampling of CTD in the unbound state via virtual system coupled multicanonical molecular dynamics, in which the lysine was acetylated or nonacetylated and histidine was charged or neutralized...
December 5, 2016: Journal of Computational Chemistry
Yohei Akazawa, Noriko Motoki, Akira Tada, Shoko Yamazaki, Akira Hachiya, Satoshi Matsuzaki, Motoko Kamiya, Tomohiko Nakamura, Tomoki Kosho, Yuji Inaba
BACKGROUND: The characteristics of aortic elasticity are unclear in children with connective tissue disorders (CTDs) such as Marfan syndrome (MFS) and Loeys-Dietz syndrome (LDS), especially in those with a non-dilated aortic root (AoR). This study evaluated the aortic elasticity properties of pediatric MFS and LDS patients with either dilated or non-dilated AoR.Methods and Results:The 31 children with MFS or LDS were classified into dilated (Z score of AoR diameter ≥2.5; n=17) or non-dilated (Z score of AoR diameter <2...
October 13, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
Agnes Mayr, Daniel Kitterer, Joerg Latus, Hannah Steubing, Joerg Henes, Francesco Vecchio, Philipp Kaesemann, Alexandru Patrascu, Andreas Greiser, Stefan Groeninger, Niko Braun, M Dominik Alscher, Udo Sechtem, Heiko Mahrholdt, Simon Greulich
BACKGROUND: Severe arrhythmias or heart failure may be surrogates of myocardial involvement in patients with connective tissue disorders (CTD). However, most patients present with unspecific symptoms, normal ECG, and preserved left ventricular ejection fraction (LV-EF). Therefore, timely diagnosis by an accurate technique is crucial. Late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR) has proven value for the detection of focal processes, but due to the often diffuse character of fibrosis/inflammation in CTD patients, CMR mapping techniques might be of incremental value for the assessment of myocardial involvement...
October 13, 2016: Journal of Cardiovascular Magnetic Resonance
Wu Ren, Jian Zhang, Wei Li, Zongcheng Li, Shuofeng Hu, Jian Suo, Xiaomin Ying
BACKGROUND Aberrant expression of long non-coding RNAs (lncRNAs) is associated with prognosis of gastric cancer, some of which could be further evaluated as potential biomarkers. In this study, we attempted to identify a specific lncRNA signature to predict the prognosis of gastric cancer. MATERIAL AND METHODS The genome-wide lncRNA expression in the high-throughput RNA-sequencing data was retrieved from the Cancer Genome Atlas (TCGA). Differential expression of lncRNAs was identified using the Limma package...
October 11, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Jitesh Ahuja, Deepika Arora, Jeffrey P Kanne, Travis S Henry, J David Godwin
Connective tissue diseases (CTDs) are a heterogeneous group of conditions characterized by circulating autoantibodies and autoimmune-mediated organ damage. Common CTDs with lung manifestations are rheumatoid arthritis, scleroderma or systemic sclerosis, Sjögren syndrome, polymyositis/dermatomyositis, systemic lupus erythematosis, mixed connective tissue disease, and undifferentiated connective tissue disease. The most common histopathologic patterns of CTD-related interstitial lung disease are nonspecific interstitial pneumonia, usual interstitial pneumonia, organizing pneumonia, and lymphoid interstitial pneumonia...
November 2016: Radiologic Clinics of North America
Mohan Zhao, Heng Zhang, Guangfeng Liu, Li Wang, Jian Wang, Zengqiang Gao, Yuhui Dong, Linbo Zhang, Yong Gong
RsmI and RsmH are conserved S-Adenosylmethionine (AdoMet)-dependent methyltransferases (MTases) that are responsible for the 2'-O-methylation and N4-methylation of C1402 in bacterial 16S rRNA, respectively. Methylation of m4Cm1402 plays a role in fine-tuning the shape and functions of the P-site to increase the decoding fidelity, and was recently found to contribute to the virulence of Staphylococcus aureus in host animals. Here we report the 2.20-Å crystal structure of homodimeric RsmI from Escherichia coli in complex with the cofactor AdoMet...
2016: PloS One
Mariachiara Arisi, Ilaria Cavazzana, Maria E Cerutti, Fabio Ferrari, Nice Carabellese, Maria T Rossi, Angela Tincani, Pier G Calzavara-Pinton, Franco Franceschini
BACKGROUND: Morphea is a rare fibrosing skin disorder. Antinuclear antibodies (ANA), antihistone and rheumatoid factor are detected in high rate of morphea cases. Scleroderma-related antibodies are usually absent. METHODS: 21 adult patients affected by morphea were examined at the time of enrollment and after 6 months with the assessment of clinical outcome measures of disease severity and damage. Healthy subjects were considered as normal controls while patients affected by systemic sclerosis and other connective tissue diseases (CTD) were considered as pathological controls...
October 5, 2016: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
Purushothaman Ramamoorthy, Krishnamurthy Lakshmanan, Hari Deo Upadhyaya, Vincent Vadez, Rajeev Kumar Varshney
Chickpea is the second most important legume crop largely grown under semi-arid tropics where terminal drought is one of the major constraints for its productivity. A trait-based selection had been considered more beneficial in drought tolerance breeding to overcome the environmental influence on drought yields. Large number of traits had been suggested in literature, with less indication on their importance and priority, for use in such breeding programs resulting in poor utilization of critical traits in drought tolerance breeding...
October 2016: Field Crops Research
Xin Zhang, Xin Zhao, Hui Dong, Yunnuan Zhu, Hongyan Shi, Jianfei Chen, Da Shi, Li Feng
The transmissible gastroenteritis virus (TGEV) nucleocapsid (N) protein plays important roles in the replication and translation of viral RNA. The present study provides the first description of two monoclonal antibodies (mAbs) (5E8 and 3D7) directed against the TGEV N protein linker region (LKR) and carboxyl terminal domain (CTD). The mAbs 5E8 and 3D7 reacted with native N protein in western blotting and immunofluorescence assay (IFA). Two linear epitopes, 189SVEQAVLAALKKLG202 and 246VTRFYGARSSSA257, located in the LKR and CTD of TGEV N protein, respectively, were identified after truncating the protein and applying a peptide scanning technique...
2016: PloS One
Hye Ji Oh, Hye Yun Moon, Seon Ah Cheon, Yoonsoo Hahn, Hyun Ah Kang
O-linked β-N-acetylglucosamine (O-GlcNAc) glycosylation is an important post-translational modification in many cellular processes. It is mediated by O-GlcNAc transferases (OGTs), which catalyze the addition of O-GlcNAc to serine or threonine residues of the target proteins. In this study, we expressed a putative Yarrowia lipolytica OGT (YlOGT), the only homolog identified in the subphylum Saccharomycotina through bioinformatics analysis, and the human OGT (hOGT) as recombinant proteins in Saccharomyces cerevisiae, and performed their functional characterization...
October 2016: Journal of Microbiology / the Microbiological Society of Korea
Lorenzo Cavagna, Veronica Codullo, Stefano Ghio, Carlo Alberto Scirè, Eleonora Guzzafame, Laura Scelsi, Silvia Rossi, Carlomaurizio Montecucco, Roberto Caporali
Among different subgroups of pulmonary arterial hypertension (PAH), those associated with connective tissue diseases (CTDs) have distinct hemodynamic and prognostic features; a correct etiologic diagnosis is thus mandatory.To estimate frequency and prognosis of previously undiagnosed CTDs in a suspect idiopathic (i) PAH cohort.Consecutive patients with PAH confirmed by right heart catheterization referred at the Cardiology Division of our Hospital without a previous rheumatological assessment or the occurrence of other conditions explaining PAH were checked for CTD by a clinical, laboratory, and instrumental evaluation...
September 2016: Medicine (Baltimore)
Sheetu Singh, Bridget F Collins, Bharat B Sharma, Jyotsna M Joshi, Deepak Talwar, Sandeep Katiyar, Nishtha Singh, Lawrence Ho, Jai Kumar Samaria, Parthasarathi Bhattacharya, Rakesh Gupta, Sudhir Chaudhari, Tejraj Singh, Vijay Moond, Sudhakar Pipavath, Jitesh Ahuja, Ravindran Chetambath, Aloke G Ghoshal, Nirmal K Jain, Hj Gayathri Devi, Surya Kant, Parvaiz Koul, Raja Dhar, Rajesh Swarnakar, Suresh Kumar Sharma, Dhrubajyoti J Roy, Kripesh R Sarmah, Bhavin Jankharia, Rodney Schmidt, Santosh K Katiyar, Arpita Jindal, Daya K Mangal, Virendra Singh, Ganesh Raghu
RATIONALE: Interstitial lung disease (ILD) is a heterogeneous group of acute and chronic inflammatory and fibrotic lung diseases. Existing ILD registries have had variable findings. Little is known about the profile of ILDs in India. OBJECTIVES: Create a prospective Registry with validation of diagnoses by multidisciplinary discussion (MDD) to characterize the clinical profile of new onset-ILD in India. METHODS: Prospective recruitment of adult patients with new onset ILD (27 centers in 19 Indian cities, 3/2012-6/2015) with connective tissue disease (CTD) serologies and high-resolution computed tomography (HRCT) chest...
September 29, 2016: American Journal of Respiratory and Critical Care Medicine
H F Ge, X Q Liu, Y Q Zhu, H Q Chen, G Z Chen
Invasive pulmonary fungal infection (IPFI) is a potentially fatal complication in patients with connective tissue disease (CTD). The current study aimed to uncover the clinical characteristics and risk factors of patients with IPFI-CTD. The files of 2186 CTD patients admitted to a single center in northern China between January 2011 and December 2013 were retrospectively reviewed. A total of 47 CTD patients with IPFI were enrolled into this study and assigned to the CTD-IPFI group, while 47 uninfected CTD patients were assigned to the control group...
September 22, 2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Raquel Gago-Fuentes, John F Bechberger, Marta Varela-Eirin, Adrian Varela-Vazquez, Benigno Acea, Eduardo Fonseca, Christian C Naus, Maria D Mayan
Chondrocytes in cartilage and bone cells population express connexin43 (Cx43) and gap junction intercellular communication (GJIC) is essential to synchronize cells for coordinated electrical, mechanical, metabolic and chemical communication in both tissues. Reduced Cx43 connectivity decreases chondrocyte differentiation and defective Cx43 causes skeletal defects. The carboxy terminal domain (CTD) of Cx43 is located in the cytoplasmic side and is key for protein functions. Here we demonstrated that chondrocytes from the CTD-deficient mice, K258stop/Cx43KO and K258stop/K258stop, have reduced GJIC, increased rates of proliferation and reduced expression of collagen type II and proteoglycans...
September 22, 2016: Oncotarget
Akiko Takeuchi, Takashi Matsushita, Kenzo Kaji, Yoshinobu Okamoto, Masahide Yasui, Masayoshi Hirata, Naoto Oishi, Akira Higashi, Mariko Seishima, Tomoya Asano, Manabu Fujimoto, Masataka Kuwana, Kazuhiko Takehara, Yasuhito Hamaguchi
OBJECTIVE: To identify and characterize a novel connective tissue disease (CTD)-related autoantibody (autoAb) directed against scaffold attachment factor B (SAFB). METHODS: AutoAb specificity was analyzed using RNA and protein-immunoprecipitation assays. Autoimmune targets were affinity purified using patients' sera and subjected to liquid chromatography mass spectrometry. RESULTS: By immunoprecipitation assay, 10 sera reacted with a protein with a molecular weight of approximately 160 kDa...
September 24, 2016: Journal of Autoimmunity
Andrew Santiago-Frangos, Kumari Kavita, Daniel J Schu, Susan Gottesman, Sarah A Woodson
The bacterial Sm protein and RNA chaperone Hfq stabilizes small noncoding RNAs (sRNAs) and facilitates their annealing to mRNA targets involved in stress tolerance and virulence. Although an arginine patch on the Sm core is needed for Hfq's RNA chaperone activity, the function of Hfq's intrinsically disordered C-terminal domain (CTD) has remained unclear. Here, we use stopped flow spectroscopy to show that the CTD of Escherichia coli Hfq is not needed to accelerate RNA base pairing but is required for the release of dsRNA...
October 11, 2016: Proceedings of the National Academy of Sciences of the United States of America
Catherine D Eichhorn, Rahul Chug, Juli Feigon
The 7SK small nuclear ribonucleoprotein (snRNP) sequesters and inactivates the positive transcription elongation factor b (P-TEFb), an essential eukaryotic mRNA transcription factor. The human La-related protein group 7 (hLARP7) is a constitutive component of the 7SK snRNP and localizes to the 3' terminus of the 7SK long noncoding RNA. hLARP7, and in particular its C-terminal domain (CTD), is essential for 7SK RNA stability and assembly with P-TEFb. The hLARP7 N-terminal La module binds and protects the 3' end from degradation, but the structural and functional role of its CTD is unclear...
September 26, 2016: Nucleic Acids Research
K Hellbach, A Sterzik, W Sommer, M Karpitschka, N Hummel, J Casuscelli, M Ingrisch, M Schlemmer, A Graser, Michael Staehler
OBJECTIVES: To evaluate the potential role of dual energy CT (DECT) to visualize antiangiogenic treatment effects in patients with metastatic renal cell cancer (mRCC) while treated with tyrosine-kinase inhibitors (TKI). METHODS: 26 patients with mRCC underwent baseline and follow-up single-phase abdominal contrast enhanced DECT scans. Scans were performed immediately before and 10 weeks after start of treatment with TKI. Virtual non-enhanced (VNE) and colour coded iodine images were generated...
September 27, 2016: European Radiology
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