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https://www.readbyqxmd.com/read/28431235/improving-surgeons-comfort-with-prismatic-glasses-during-cleft-palate-surgery-preliminary-findings
#1
Hai Kuang, Guosheng Chen, Qitao Wen, Shuai Li, Lei Che, Feixin Liang
PURPOSE: We aimed to observe the effect of prismatic glasses on improving surgeons' comfort during cleft palate surgery. MATERIALS AND METHODS: A within-subjects design was used. We included 3 oral-maxillofacial surgeons and 6 patients with complete cleft palate in the study. One group of cleft palate patients (3 complete cleft palates) was allocated to each of the 3 surgeons not wearing prismatic glasses, and another similar group of cleft palate patients was allocated to the same 3 surgeons wearing prismatic glasses...
March 27, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28424519/mechanism-of-chromatin-remodelling-revealed-by-the-snf2-nucleosome-structure
#2
Xiaoyu Liu, Meijing Li, Xian Xia, Xueming Li, Zhucheng Chen
Chromatin remodellers are helicase-like, ATP-dependent enzymes that alter chromatin structure and nucleosome positions to allow regulatory proteins access to DNA. Here we report the cryo-electron microscopy structure of chromatin remodeller Switch/sucrose non-fermentable (SWI2/SNF2) from Saccharomyces cerevisiae bound to the nucleosome. The structure shows that the two core domains of Snf2 are realigned upon nucleosome binding, suggesting activation of the enzyme. The core domains contact each other through two induced Brace helices, which are crucial for coupling ATP hydrolysis to chromatin remodelling...
April 19, 2017: Nature
https://www.readbyqxmd.com/read/28422190/current-carried-by-the-slc26-family-member-prestin-does-not-flow-through-the-transporter-pathway
#3
Jun-Ping Bai, Iman Moeini-Naghani, Sheng Zhong, Fang-Yong Li, Shumin Bian, Fred J Sigworth, Joseph Santos-Sacchi, Dhasakumar Navaratnam
Prestin in the lateral membrane of outer hair cells, is responsible for electromotility (EM) and a corresponding nonlinear capacitance (NLC). Prestin's voltage sensitivity is influenced by intracellular chloride. A regulator of intracellular chloride is a stretch-sensitive, non-selective conductance within the lateral membrane, GmetL. We determine that prestin itself possesses a stretch-sensitive, non-selective conductance that is largest in the presence of thiocyanate ions. This conductance is independent of the anion transporter mechanism...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28413147/branchial-cleft-cyst-an-unusual-site-for-the-cervical-metastasis-of-nasopharyngeal-carcinoma
#4
Yu-Chang Liao, Mohamad Adel, Li-Yu Lee, Kai-Ping Chang
OBJECTIVE: Cancers found in the resected branchial cleft cyst are rare clinically but usually impose substantive diagnostic and treatment challenges for clinicians. METHODS: A 31-year-old man presented with a lateral neck mass that was suspected to be an inflammatory branchial cleft cyst. After excision, the pathologic specimen revealed a benign cystic appearance with a focus of undifferentiated carcinoma. Serologic tests for Epstein-Barr virus were negative. A positron emission tomography scan and upper aerodigestive tract endoscopies were negative for any other suspicious lesion...
April 13, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28412278/disruption-of-glutamate-neurotransmitter-transmission-is-modulated-by-snap-25-in-benzo-a-pyrene-induced-neurotoxic-effects
#5
Kai Yang, Xuejun Jiang, Qiuping Su, Jing Wang, Chunlin Li, Yinyin Xia, Shuqun Cheng, Qizhong Qin, Xianqing Cao, Chengzhi Chen, Baijie Tu
Benzo[a]pyrene (B[a]P), a ubiquitous chemical contaminant in the environment, is a well-established neurotoxicant to human. However, the molecular mechanisms for B[a]P neurotoxicity are still unclear. In the present study, after treating Sprague-Dawley rats with 0.02, 0.2 and 2.0mg/kg/day B[a]P for 7 weeks [from postnatal day (PND) 5 to PND54], our results showed that B[a]P exposure caused a significant deficits in learning and memory function. By using U87 cells as in vitro model, the significant cytotoxicity and the induction of apoptosis caused by B[a]P were further verified...
April 18, 2017: Toxicology
https://www.readbyqxmd.com/read/28403008/a-new-design-for-reconstruction-about-nasal-dimensions-during-the-primary-repair-of-unilateral-cleft-lip
#6
Ren-Kai Liu, Cheng-Hao Li, Jiayu Shi, Bing Shi
No abstract text is available yet for this article.
February 15, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28383424/polymorphic-variants-in-vax1-and-the-risk-of-nonsyndromic-cleft-lip-with-or-without-cleft-palate-in-a-population-from-northern-china
#7
Dongmei Li, Tingting Liu, Xiangbiao Meng, Qiang Guo, Jinna Shi, Yanru Hao, Xiaohui Jiao, Kewen Lv, Tao Song
BACKGROUND: Nonsyndromic cleft lip with or without cleft palate (NSCL/P) is one of the most common craniofacial birth defects, and the etiology of NSCL/P involves both genetic and environmental factors. Genome-wide association study (GWAS) identified a novel susceptibility locus of ventral anterior homeobox 1 (VAX1) in patients with NSCL/P. However, the association of single nucleotide polymorphisms (SNPs) of VAX1 with NSCL/P is inconclusive due to the differences in the racial and ethnic populations...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28363736/systems-biology-of-facial-development-contributions-of-ectoderm-and-mesenchyme
#8
Joan E Hooper, Weiguo Feng, Hong Li, Sonia Leach, Tzulip Phang, Charlotte Siska, Kenneth L Jones, Richard A Spritz, Lawrence E Hunter, Trevor Williams
The rapid increase in gene-centric biological knowledge coupled with analytic approaches for genomewide data integration provides an opportunity to develop systems-level understanding of facial development. Experimental analyses have demonstrated the importance of signaling between the surface ectoderm and the underlying mesenchyme in coordinating facial patterning. However, current transcriptome data from the developing vertebrate face is dominated by the mesenchymal component, and the contributions of the ectoderm are not easily identified...
March 28, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28326722/-application-of-team-approach-and-key-techniques-of-cleft-lip-and-palate
#9
Shi Bing, Fu Yuchuan, Yin Ningbei, Huang Hong-Zhang, Liu Jianhua, Chen Renji, Zhu Hongping, Liu Qiang, Huang Yongqing, Ren Zhanping, Lu Yong, Xiao Wenlin, Song Qinggao, Li Wanshan, Li Sheng, Wang Hongtao, Zhang Junrui, Jiang Liping, Ma Li, Wang Ling, He Dengqi
The development of an expert consensus based on specific domestic situations will provide practical guidance to the efforts aiming at improving cleft care in China. The team approach of twenty-one cleft centers were pooled together, covering pre-surgical orthopedics, primary surgical repair, orthodontic treatment, alveolar bone graft, secondary deformity correction, palatal fistulae repair, the diagnosis and treatment of velopharyngeal incompetence, speech therapy, otitis media management, and skeletal deformity correction...
February 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28326707/-morphological-classification-and-velopharyngeal-function-analysis-of-submucous-cleft-palate-patients
#10
Yin Heng, Guo Chunli, Shi Bing, Li Yang, Li Jingtao
OBJECTIVE: To enhance the accuracy in diagnosis and management of submucous cleft palate via a thorough analysis of its anatomical and functional details. METHODS: Two hundred seventy-six submucous cleft palate cases from 2008 to 2014 were retrospectively investigated. Subgroup analysis were performed on the basis of preoperative velopharyngeal function, palatal morphology, cleft lip concurrence, and patient motives for treatment. RESULTS: Among the included cases, 96 (34...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28319083/structures-of-human-o-glcnacase-and-its-complexes-reveal-a-new-substrate-recognition-mode
#11
Baobin Li, Hao Li, Lei Lu, Jiaoyang Jiang
Human O-GlcNAcase (hOGA) is the unique enzyme responsible for the hydrolysis of the O-linked β-N-acetyl glucosamine (O-GlcNAc) modification, an essential protein glycosylation event that modulates the function of numerous cellular proteins in response to nutrients and stress. Here we report crystal structures of a truncated hOGA, which comprises the catalytic and stalk domains, in apo form, in complex with an inhibitor, and in complex with a glycopeptide substrate. We found that hOGA forms an unusual arm-in-arm homodimer in which the catalytic domain of one monomer is covered by the stalk domain of the sister monomer to create a substrate-binding cleft...
April 2017: Nature Structural & Molecular Biology
https://www.readbyqxmd.com/read/28317355/-three-dimensional-analysis-of-alveolar-changes-of-complete-unilateral-cleft-lip-patients-after-presurgical-nasoalveolar-molding-treatment
#12
Li Hongyi, Kuang Hai, Wang Xiaomeng, Li Dongshuang
OBJECTIVE: This study analyzed the alveolar changes of complete unilateral cleft lip (UCCL) patients after pre-surgical nasoalveolar molding (PNAM) treatment using a three-dimensional method. METHODS: Palate impressions of thirty UCCL patients who underwent PNAM treatment in the Affiliated Stomatology Hospital of Guangxi Medical University were taken pre- and post-PNAM. The plaster impressions were scanned using cone beam computed tomography (CBCT). The DICOM files were exported and 3D models reconstructed in Mimics 15...
August 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28304389/manifestation-and-grading-of-ocular-involvement-in-patients-with-tessier-number-10-clefts
#13
C Shao, W Lu, J Li, J Chen, Q Yao, X Fan, Y Fu
PurposeThe objective of this study is to evaluate and grade the extent and severity of ocular involvement in Tessier number 10 cleft.Patients and methodsA retrospective, noncomparative, interventional case series was conducted between January 2006 and December 2015. Clinical data were reviewed from 59 patients (85 eyes) with Tessier number 10 clefts. Detailed medical history and ophthalmic examination of patients with a confirmed diagnosis of Tessier number 10 cleft were recorded on an itemized data collection form...
March 17, 2017: Eye
https://www.readbyqxmd.com/read/28296686/sternal-development-and-variations-and-anomalies-in-patients-with-microtia-evaluation-using-3-dimensional-computed-tomography
#14
MeiRong Yang, Haiyue Jiang, Xiaobo Yu, Weiwei Chen, Qingsong Li, Ye Zhang, Bo Pan
OBJECTIVE: The objectives of this study were to evaluate sternal development and variations in patients with microtia and to identify the incidence of congenital sternal anomalies and then to investigate the interaction between microtia and sternal anomalies. METHODS: A total of 212 consecutive patients received a preoperative 3-dimensional chest computed tomography. A retrospective study was performed with the clinical and imaging data from November 2014 to July 2015...
March 15, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28252640/crystal-structure-of-the-bont-a2-receptor-binding-domain-in-complex-with-the-luminal-domain-of-its-neuronal-receptor-sv2c
#15
Roger M Benoit, Martin A Schärer, Mara M Wieser, Xiaodan Li, Daniel Frey, Richard A Kammerer
A detailed molecular understanding of botulinum neurotoxin (BoNT)/host-cell-receptor interactions is fundamental both for developing strategies against botulism and for generating improved BoNT variants for medical applications. The X-ray crystal structure of the receptor-binding domain (HC) of BoNT/A1 in complex with the luminal domain (LD) of its neuronal receptor SV2C revealed only few specific side-chain - side-chain interactions that are important for binding. Notably, two BoNT/A1 residues, Arg 1156 and Arg 1294, that are crucial for the interaction with SV2, are not conserved among subtypes...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28203419/diagnosis-of-mitral-valve-cleft-using-real-time-3-dimensional-echocardiography
#16
Xinchun Yuan, Aiyun Zhou, Li Chen, Cheng Zhang, Yan Zhang, Pan Xu
BACKGROUND: Mitral valve cleft (MVC) is the most common cause of congenital mitral insufficiency, and MVC may occur alone or in association with other congenital heart lesions. Direct suture and valvuloplasty are the major and effective treatments for mitral regurgitation (MR) caused by MVC. Therefore, it is important to determine the location and magnitude of the pathological damage due to MVC when selecting a surgical procedure for treatment. This study explored the application value of transthoracic real-time 3-dimensional (3D) echocardiography (RT-3DE) in the diagnosis of MVC...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28193329/characterization-and-crystal-structure-of-a-thermostable-glycoside-hydrolase-family-45-1-4-%C3%AE-endoglucanase-from-thielavia-terrestris
#17
Jian Gao, Jian-Wen Huang, Qian Li, Weidong Liu, Tzu-Ping Ko, Yingying Zheng, Xiansha Xiao, Chih-Jung Kuo, Chun-Chi Chen, Rey-Ting Guo
1,4-β-Endoglucanase is one of the most important biocatalysts in modern industries. Here, a glycoside hydrolase (GH) family 45 endoglucanase from thermophilic fungus Theilavia terrestris (TtCel45A) was expressed in Pichia pastoris. The recombinant protein shows optimal activity at 60°C, pH 4-5. The enzyme exhibits extraordinary thermostability that more than 80% activity was detected after heating at 80°C for 2.5h. The high resolution crystal structures of apo-form enzyme and that in complex with cellobiose and cellotetraose were solved to 1...
April 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28191659/lumbar-syndrome-a-case-manifesting-as-cutaneous-infantile-hemangiomas-of-the-lower-extremity-perineum-and-gluteal-region-and-a-review-of-published-work
#18
Xia Yu, Jia Zhang, Zhouwei Wu, Ming Liu, Ruhong Chen, Yan Gu, Ming Li, Zhirong Yao
We herein report a rare case of LUMBAR syndrome. A 1-month-old female infant presented with extensive segmental hemangiomas on the left lower extremity, left perineum and gluteal region with ulceration. Bilateral labia minoras were asymmetrical. Both legs were asymmetrical with left leg atrophy, and the intergluteal cleft was deviated. A dark red pustule and a sacrococcygeal dimple could be seen in the lumbosacral region. Lipomyelomeningocele, tethered cord and sacrum dysplasia were noted by magnetic resonance imaging...
February 13, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28075445/a-clinical-and-molecular-analysis-of-a-patient-with-emanuel-syndrome
#19
Jin-Wen Luo, Huan Yang, Zhi-Ping Tan, Ming Tu, Hong Luo, Yi-Feng Yang, Li Xie
Emanuel syndrome (ES) is the most frequent type of recurrent non‑Robertsonian translocation that is characterized by numerous anomalies. Over 100 patients with ES have been described in the literature. The phenotype of this syndrome varies but often consists of facial dysmorphism, microcephaly, severe intellectual disability, developmental retardation, congenital heart disease and genital anomalies. The present study describes a 2‑year‑old boy with multiple malformations, including facial dysmorphism, severe intellectual disability, growth retardation, congenital heart disease, cleft lip and palate, genital malformation (micropenis), amblyopia, thymic dysplasia and hearing impairment...
March 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28071053/functional-characterization-of-the-unique-terminal-thioesterase-domain-from-polymyxin-synthetase
#20
Charles A Galea, Kade D Roberts, Yan Zhu, Philip E Thompson, Jian Li, Tony Velkov
Polymyxins remain one of the few antibiotics available for treating antibiotic resistant bacteria. Here we describe polymyxin B thioesterase which performs the final step in polymyxin B biosynthesis. Isolated thioesterase catalyzed cyclization of an N-acetylcystamine polymyxin B analogue to form polymyxin B. The thioesterase contained a catalytic cysteine unlike most thioesterases which possess a serine. Supporting this, incubation of polymyxin B thioesterase with reducing agents abolished enzymatic activity, while mutation of the catalytic cysteine to serine significantly decreased activity...
January 17, 2017: Biochemistry
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