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https://www.readbyqxmd.com/read/28199838/islet-coordinately-regulates-motor-axon-guidance-and-dendrite-targeting-through-the-frazzled-dcc-receptor
#1
Celine Santiago, Greg J Bashaw
Motor neuron axon targeting in the periphery is correlated with the positions of motor neuron inputs in the CNS, but how these processes are coordinated to form a myotopic map remains poorly understood. We show that the LIM homeodomain factor Islet (Isl) controls targeting of both axons and dendrites in Drosophila motor neurons through regulation of the Frazzled (Fra)/DCC receptor. Isl is required for fra expression in ventrally projecting motor neurons, and isl and fra mutants have similar axon guidance defects...
February 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/28187180/comparative-evaluation-of-visual-outcomes-and-corneal-asphericity-after-laser-assisted-in-situ-keratomileusis-with-the-six-dimension-amaris-excimer-laser-system
#2
JunJie Piao, Ying-Jun Li, Woong-Joo Whang, Mihyun Choi, Min Ji Kang, Jee Hye Lee, Geunyoung Yoon, Choun-Ki Joo
PURPOSE: To compare the visual and refractive outcomes after laser-assisted in situ keratomileusis (LASIK) surgery for correction of myopia or myopic astigmatism using a six-dimensional Amaris excimer laser. METHODS: In this retrospective cohort study, we enrolled 47 eyes of 28 patients (age: 19-36 years) with myopia or myopic astigmatism. We used the Custom Ablation Manager protocol and performed ablations with the SCHWIND AMARIS system. LASIK flaps were cut with an iFS Advanced Femtosecond Laser...
2017: PloS One
https://www.readbyqxmd.com/read/28169527/molecular-biodynamers-dynamic-covalent-analogues-of-biopolymers
#3
Yun Liu, Jean-Marie Lehn, Anna K H Hirsch
Constitutional dynamic chemistry (CDC) features the use of reversible linkages at both molecular and supramolecular levels, including reversible covalent bonds (dynamic covalent chemistry, DCC) and noncovalent interactions (dynamic noncovalent chemistry, DNCC). Due to its inherent reversibility and stimuli-responsiveness, CDC has been widely utilized as a powerful tool for the screening of bioactive compounds, the exploitation of receptors or substrates driven by molecular recognition, and the fabrication of constitutionally dynamic materials...
February 7, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28156483/impact-of-financial-burden-on-information-and-opportunity-for-cancer-ca-patients-pts-participation-par-in-clinical-trials-cts
#4
Dana Dornsife
: 166 Background: The degree to which cancer caused financial problems may influence ca pts par in cts and negatively impact quality of life (QoL). Financial burden of cts par, may include finding an appropriate trial, traveling to the trial site, paying for travel, lodging and some medical expenses. The Lazarex Cancer Foundation (LCF) was founded in 2006 with mission to improve care, giving hope, dignity, and life to advanced ca pts by providing assistance with options and costs to cts par, community outreach, and education...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28154463/association-of-gingivitis-with-dental-calculus-thickness-or-dental-calculus-coverage-and-subgingival-bacteria-in-feline-leukemia-virus-and-feline-immunodeficiency-virus-negative-cats
#5
Naris Thengchaisri, Jörg M Steiner, Jan S Suchodolski, Panpicha Sattasathuchana
Periodontal disease is the most common oral disease in cats. The objectives of this study were to determine the relationships between gingivitis and dental calculus thickness (DCT), or dental calculus coverage (DCC); determine the association of gingivitis scores and types of oral bacteria; and to evaluate bacterial co-infection in cats with periodontal disease. Twelve cats that were not infected with feline leukemia or feline immunodeficiency viruses were enrolled in the study. Gingivitis, DCT, and DCC were scored and recorded...
January 2017: Canadian Journal of Veterinary Research, Revue Canadienne de Recherche Vétérinaire
https://www.readbyqxmd.com/read/28138968/recurrence-after-resection-with-curative-intent-for-distal-cholangiocarcinoma
#6
K Komaya, T Ebata, K Shirai, S Ohira, N Morofuji, A Akutagawa, R Yamaguchi, M Nagino
BACKGROUND: Few studies have been conducted on patterns of recurrence after resection for distal cholangiocarcinoma (DCC). The aim of this study was to investigate the incidence and pattern of recurrence after resection of DCC, and to evaluate prognostic factors for time to recurrence and recurrence-free survival (RFS). METHODS: Patients who underwent pancreatoduodenectomy with curative intent for DCC between 2001 and 2010 at one of 30 hospitals in Japan were reviewed retrospectively, with special attention to recurrence patterns...
January 31, 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28138909/colloidal-gels-with-extracellular-matrix-particles-and-growth-factors-for-bone-regeneration-in-critical-size-rat-calvarial-defects
#7
Jakob M Townsend, S Connor Dennis, Jonathan Whitlow, Yi Feng, Jinxi Wang, Brian Andrews, Randolph J Nudo, Michael S Detamore, Cory J Berkland
Colloidal gels encapsulating natural materials and exhibiting paste-like properties for placement are promising for filling complex geometries in craniofacial bone regeneration applications. Colloidal materials have demonstrated modest clinical outcomes as bone substitutes in orthopedic applications, but limited success in craniofacial applications. As such, development of a novel colloidal gel will fill a void in commercially available products for use in craniofacial reconstruction. One likely application for this technology is cranial reconstruction...
January 30, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28125149/assessment-of-fatigue-using-the-identity-consequence-fatigue-scale-in-patients-with-lung-cancer
#8
Ingrid Correia Nogueira, Amanda Souza Araújo, Maria Tereza Morano, Antonio George Cavalcante, Pedro Felipe de Bruin, Johana Susan Paddison, Guilherme Pinheiro da Silva, Eanes Delgado Pereira
Objective: To evaluate the properties of the Identity-Consequence Fatigue Scale (ICFS) in patients with lung cancer (LC), assessing the intensity of fatigue and associated factors. Methods: This was a cross-sectional study involving LC patients, treated at a teaching hospital in Brazil, who completed the ICFS. Patients with chronic heart disease (CHD) and healthy controls, matched for age and gender, also completed the scale. Initially, a Brazilian Portuguese-language version of the ICFS was administered to 50 LC patients by two independent interviewers; to test for reproducibility, it was readministered to those same patients...
January 23, 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28108253/dcc-haploinsufficiency-regulates-dopamine-receptor-expression-across-postnatal-lifespan
#9
Matthew Pokinko, Alanna Grant, Florence Shahabi, Yvan Dumont, Colleen Manitt, Cecilia Flores
Adolescence is a period during which the medial prefrontal cortex (mPFC) undergoes significant remodeling. The netrin-1 receptor, deleted in colorectal cancer (DCC), controls the extent and organization of mPFC dopamine connectivity during adolescence and in turn directs mPFC functional and structural maturation. Dcc haploinsufficiency leads to increased mPFC dopamine input, which causes improved cognitive processing and resilience to behavioral effects of stimulant drugs of abuse. Here we examine the effects of Dcc haploinsufficiency on the dynamic expression of dopamine receptors in forebrain targets of C57BL6 mice...
January 17, 2017: Neuroscience
https://www.readbyqxmd.com/read/28108067/prognostic-impact-of-type-of-preoperative-biliary-drainage-in-patients-with-distal-cholangiocarcinoma
#10
Fumihiko Miura, Keiji Sano, Keita Wada, Makoto Shibuya, Yutaka Ikeda, Kunihiko Takahashi, Masahiko Kainuma, Sachiyo Kawamura, Koichi Hayano, Tadahiro Takada
BACKGROUND: Surgical results of patients with resected distal cholangiocarcinoma (DCC) were evaluated to elucidate prognostic impact of the type of preoperative biliary drainage (PBD). METHODS: Eighty-eight patients with resected DCC were stratified into two groups according to the type of PBD: the percutaneous transhepatic biliary drainage (PTBD) group (n = 25) and the endoscopic biliary drainage (EBD) group (n = 63). RESULTS: Overall 5-year survival rate of the patients in the PTBD group was poorer than in the EBD group (24% vs...
January 10, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28101224/impact-of-chromosome-17q-deletion-in-the-primary-lesion-of-colorectal-cancer-on-liver-metastasis
#11
Masaya Kawai, Hiromitsu Komiyama, Masaki Hosoya, Haruna Okubo, Tomoaki Fujii, Norihiko Yokoyama, Chiyo Sato, Takae Ueyama, Atsushi Okuzawa, Michitoshi Goto, Yutaka Kojima, Makoto Takahashi, Kiichi Sugimoto, Shun Ishiyama, Shinya Munakata, Dai Ogura, Shin-Ichiro Niwa, Yuichi Tomiki, Takumi Ochiai, Kazuhiro Sakamoto
Colorectal cancer is a prevalent malignancy worldwide, and investigations are required to elucidate the underlying carcinogenic mechanisms. Amongst these mechanisms, de novo carcinogenesis and the adenoma to carcinoma sequence, are the most understood. Metastasis of colorectal cancer to the liver often results in fatality, therefore, it is important for any associated risk factors to be identified. Regarding the treatment of the disease, it is important to manage not only the primary colorectal tumor, but also the liver metastases...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28077435/blu-285-dcc-2618-show-activity-against-gist
#12
(no author information available yet)
Tyrosine kinase inhibitors may initially control gastrointestinal stromal tumors, but most patients eventually experience disease progression due to activation loop mutations, which are resistant to approved drugs. However, phase I trials suggest that the cancer is sensitive to two new agents: BLU-285 and DCC-2618. In addition, liquid biopsies, which were used to follow patients during the trials, may be valuable tools in tracking disease progression and assessing tumor heterogeneity.
January 11, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28068852/maternal-outcomes-following-the-initiation-of-an-institutional-delayed-cord-clamping-protocol-an-observational-case-control-study
#13
Kelly Kuo, Priyanka Gohale, David N Hackney, Chayatat Ruangkit, Monika Bhola, Melissa I March
OBJECTIVE: To evaluate maternal outcomes before and after implementation of an institutional delayed cord clamping (DCC) protocol. STUDY DESIGN: We performed a secondary analysis of a retrospective cohort study of deliveries occurring at <34 weeks at a tertiary care center in 2013-2014. 139 women who underwent early cord clamping were compared to 130 women delivered after DCC protocol implementation. Maternal estimated blood loss (EBL) was the primary outcome of interest...
January 9, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28068334/two-paralogous-tetraspanins-tsp-12-and-tsp-14-function-with-the-adam10-metalloprotease-sup-17-to-promote-bmp-signaling-in-caenorhabditis-elegans
#14
Lin Wang, Zhiyu Liu, Herong Shi, Jun Liu
The highly conserved bone morphogenetic protein (BMP) signaling pathway regulates many developmental and homeostatic processes. While the core components of the BMP pathway have been well studied, much research is needed for understanding the mechanisms involved in the precise spatiotemporal control of BMP signaling in vivo. Here, we provide evidence that two paralogous and evolutionarily conserved tetraspanins, TSP-12 and TSP-14, function redundantly to promote BMP signaling in C. elegans. We further show that the ADAM10 (a disintegrin and metalloprotease 10) ortholog SUP-17 also functions to promote BMP signaling, and that TSP-12 can bind to and promote the cell surface localization of SUP-17...
January 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28057929/a-novel-role-for-the-dna-repair-gene-rad51-in-netrin-1-signalling
#15
K A Glendining, D Markie, R J M Gardner, E A Franz, S P Robertson, C L Jasoni
Mutations in RAD51 have recently been linked to human Congenital Mirror Movements (CMM), a developmental disorder of the motor system. The only gene previously linked to CMM encodes the Netrin-1 receptor DCC, which is important for formation of corticospinal and callosal axon tracts. Thus, we hypothesised that Rad51 has a novel role in Netrin-1-mediated axon development. In mouse primary motor cortex neurons, Rad51 protein was redistributed distally down the axon in response to Netrin-1, further suggesting a functional link between the two...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28056843/the-influence-of-day-care-centres-designed-for-people-with-dementia-on-family-caregivers-a-qualitative-study
#16
Signe Tretteteig, Solfrid Vatne, Anne Marie Mork Rokstad
BACKGROUND: Dementia is one of the most challenging age-related illnesses for family caregivers, whose care-related burden is well known. Research indicates that day care centres (DCCs) can reduce the caregiver burden and help family caregivers to cope with demands; however, the current body of knowledge is still tentative and inconsistent, and more research is recommended. The aim of this study is to provide an extended understanding of the situation of family caregivers and to examine to what extent DCCs can meet their need for support and respite...
January 5, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28054144/aerobic-fitness-impacts-sympathoadrenal-axis-responses-to-concurrent-challenges
#17
Heather E Webb, Deena A Rosalky, Matthew J McAllister, Edmund O Acevedo, Gary H Kamimori
: The combination of mental and physical challenges can elicit exacerbated cardiorespiratory (CR) and catecholamine responses above that of a single challenge alone. PURPOSE: This study examined the effects of a combination of acute mental challenges and physical stress on cardiorespiratory and catecholamine responses. METHOD: Eight below-average fitness (LF VO2max = 36.58 ± 3.36 ml(-1) kg(-1) min(-1)) and eight above-average fitness (HF VO2max = 51...
January 4, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28052247/sema-1a-reverse-signaling-promotes-midline-crossing-in-response-to-secreted-semaphorins
#18
Melissa Hernandez-Fleming, Ethan W Rohrbach, Greg J Bashaw
Commissural axons must cross the midline to form functional midline circuits. In the invertebrate nerve cord and vertebrate spinal cord, midline crossing is mediated in part by Netrin-dependent chemoattraction. Loss of crossing, however, is incomplete in mutants for Netrin or its receptor Frazzled/DCC, suggesting the existence of additional pathways. We identified the transmembrane Semaphorin, Sema-1a, as an important regulator of midline crossing in the Drosophila CNS. We show that in response to the secreted Semaphorins Sema-2a and Sema-2b, Sema-1a functions as a receptor to promote crossing independently of Netrin...
January 3, 2017: Cell Reports
https://www.readbyqxmd.com/read/28049617/synthesis-of-antimicrobial-glucosamides-as-bacterial-quorum-sensing-mechanism-inhibitors
#19
Nripendra N Biswas, Tsz Tin Yu, Önder Kimyon, Shashidhar Nizalapur, Christopher R Gardner, Mike Manefield, Renate Griffith, David StC Black, Naresh Kumar
Bacteria communicate with one another and regulate their pathogenicity through a phenomenon known as quorum sensing (QS). When the bacterial colony reaches a threshold density, the QS system induces the production of virulence factors and the formation of biofilms, a powerful defence system against the host's immune responses. The glucosamine monomer has been shown to disrupt the bacterial QS system by inhibiting autoinducer (AI) signalling molecules such as the acyl-homoserine lactones (AHLs). In this study, the synthesis of acetoxy-glucosamides 8, hydroxy-glucosamides 9 and 3-oxo-glucosamides 12 was performed via the 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC·HCl) and N,N'-dicyclohexylcarbodiimide (DCC) coupling methods...
December 21, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28033683/snare-proteins-play-a-role-in-motor-axon-guidance-in-vertebrates-and-invertebrates
#20
Pablo José Barrecheguren, Oriol Ros, Tiziana Cotrufo, Beat Kunz, Eduardo Soriano, Fausto Ulloa, Esther T Stoeckli, Sofia J Araújo
Axonal growth and guidance rely on correct growth cone responses to guidance cues, both in the central nervous system (CNS) and in the periphery. Unlike the signaling cascades that link axonal growth to cytoskeletal dynamics, little is known about the crosstalk mechanisms between guidance and membrane dynamics and turnover in the axon. Our studies have shown that Netrin-1/Deleted in Colorectal Cancer (DCC) signaling triggers exocytosis through the SNARE Syntaxin-1 (STX-1) during the formation of commissural pathways...
December 29, 2016: Developmental Neurobiology
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