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https://www.readbyqxmd.com/read/28340458/toxic-effects-of-environmental-pollutants-comparative-investigation-using-allium-cepa-l-and-lactuca-sativa-l
#1
Graciele Lurdes Silveira, Maria Gabriela Franco Lima, Gabriela Barreto Dos Reis, Marcel José Palmieri, Larissa Fonseca Andrade-Vieria
Studies that help understand the mechanisms of action of environmental pollutants are extremely important in environmental toxicology. In this context, assays using plants as models stand out for their simplicity and low performance cost. Among the plants used for this purpose, Allium cepa L. is the model most commonly applied for cytogenotoxic tests, while Lactuca sativa L., already widely used in phytotoxic investigations, has been gaining prominence in cytotoxic analyses. The present study aimed to compare the responses of A...
March 21, 2017: Chemosphere
https://www.readbyqxmd.com/read/28340408/ongoing-evolution-of-pseudomonas-aeruginosa-pao1-sublines-complicates-studies-of-dna-damage-repair-and-tolerance
#2
Julia Sidorenko, Tatjana Jatsenko, Maia Kivisaar
Sublines of the major P. aeruginosa reference strain PAO1 are derivatives of the original PAO1 isolate, which are maintained in laboratories worldwide. These sublines display substantial genomic and phenotypic variation due to ongoing microevolution. Here, we examined four sublines, MPAO1, PAO1-L, PAO1-DSM and PAO1-UT, originated from different laboratories, and six DNA polymerase-deficient mutants from the P. aeruginosa MPAO1 transposon library for their employment in elucidation of DNA damage repair and tolerance mechanisms in P...
March 16, 2017: Mutation Research
https://www.readbyqxmd.com/read/28334676/manual-motor-speed-dysfunction-as-a-neurocognitive-endophenotype-in-euthymic-bipolar-disorder-patients-and-their-healthy-relatives-evidence-from-a-5-year-follow-up-study
#3
P Correa-Ghisays, V Balanzá-Martínez, G Selva-Vera, J Vila-Francés, E Soria-Olivas, J Vivas-Lalinde, C San Martín, A M Borrás, R Ayesa-Arriola, J Sanchez-Moreno, J Sánchez-Ort, B Crespo-Facorro, E Vieta, R Tabarés-Seisdedos
BACKGROUND: Few studies have examined Manual Motor Speed (MMS) in bipolar disorder (BD). The aim of this longitudinal, family study was to explore whether dysfunctional MMS represents a neurocognitive endophenotype of BD. METHODS: A sample of 291 subjects, including 131 BD patients, 77 healthy first-degree relatives (BD-Rel), and 83 genetically-unrelated healthy controls (HC), was assessed with the Finger-Tapping Test (FTT) on three occasions over a 5-year period...
March 16, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28329664/prospective-evaluation-of-complications-in-dermatologic-surgery-associated-with-hypertension-conroy
#4
Conroy Chow, Matthew J Simpson, Niko Pascua, Harjot Maan, Jacqueline G Berlier, Siegrid Yu, Isaac Neuhaus, Roy Grekin, Sarah T Arron
BackgroundPoorly controlled hypertension is a known risk factor for surgical complications. OBJECTIVE: This study examines the incidence of complications in participants undergoing Mohsmicrographic surgery (MMS) based on preoperative blood pressure (BP) measurement and investigates the role of potential confounders in the relationship between preoperative BP and postoperative complications.MethodsThis 10-month prospective cohort study at the University of California, San Francisco (UCSF) Dermatologic Surgery Center approached all patients undergoing MMS for participation and assessed for the diagnosis of hypertension, anti-hypertensive medication use, use of tobacco or blood thinners, immunosuppression, concomitant diabetes, or previous treatment with radiation therapy at the surgical site...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328141/a-590-kb-deletion-caused-by-non-allelic-homologous-recombination-between-two-line-1-elements-in-a-patient-with-mesomelia-synostosis-syndrome
#5
Tomohiro Kohmoto, Takuya Naruto, Miki Watanabe, Yuji Fujita, Sae Ujiro, Nana Okamoto, Hideaki Horikawa, Kiyoshi Masuda, Issei Imoto
Mesomelia-synostoses syndrome (MSS) is a rare, autosomal-dominant, syndromal osteochondrodysplasia characterized by mesomelic limb shortening, acral synostoses, and multiple congenital malformations due to a non-recurrent deletion at 8q13 that always encompasses two coding-genes, SULF1 and SLCO5A1. To date, five unrelated patients have been reported worldwide, and MMS was previously proposed to not be a genomic disorder associated with deletions recurring from non-allelic homologous recombination (NAHR) in at least two analyzed cases...
April 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28327556/control-of-structure-specific-endonucleases-to-maintain-genome-stability
#6
REVIEW
Pierre-Marie Dehé, Pierre Henri L Gaillard
Structure-specific endonucleases (SSEs) have key roles in DNA replication, recombination and repair, and emerging roles in transcription. These enzymes have specificity for DNA secondary structure rather than for sequence, and therefore their activity must be precisely controlled to ensure genome stability. In this Review, we discuss how SSEs are controlled as part of genome maintenance pathways in eukaryotes, with an emphasis on the elaborate mechanisms that regulate the members of the major SSE families - including the xeroderma pigmentosum group F-complementing protein (XPF) and MMS and UV-sensitive protein 81 (MUS81)-dependent nucleases, and the flap endonuclease 1 (FEN1), XPG and XPG-like endonuclease 1 (GEN1) enzymes - during processes such as DNA adduct repair, Holliday junction processing and replication stress...
March 22, 2017: Nature Reviews. Molecular Cell Biology
https://www.readbyqxmd.com/read/28326483/assessment-of-sperm-quality-in-palaemonid-prawns-using-comet-assay-methodological-optimization
#7
Alexandre Erraud, Marc Bonnard, Aurélie Duflot, Alain Geffard, Jean-Michel Danger, Joëlle Forget-Leray, Benoît Xuereb
The aim of this study was to adapt the Comet assay in spermatozoa of the marine prawn Palaemon serratus to use it as a marker of sperm quality. Indeed, due to the characteristics of their spermatozoa, the measurement of DNA integrity is one of the few markers which can be transferred to crustaceans to assess the quality of their semen. In the first step, the methods of collecting and maintaining spermatozoa were optimized. Cell survival was estimated during kinetics of preservation (i.e. 1, 2, 4 and 8 h) in various suspension media to define artificial seawater (ASW) as optimal...
March 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28324886/the-effect-of-ovarian-cancer-screening-on-sexual-activity-and-functioning-results-from-the-uk-collaborative-trial-of-ovarian-cancer-screening-rct
#8
Lesley Fallowfield, Ivonne Solis-Trapala, Usha Menon, Carolyn Langridge, Shirley May, Ian Jacobs, Valerie Jenkins
BACKGROUND: To examine the impact of multimodal (MMS) and ultrasound (USS) screening on the sexual activity and functioning of 22 966 women in the UK Collaborative Trial of Ovarian Cancer Screening (UKCTOCS) RCT. METHODS: Fallowfield's Sexual Activity Questionnaire (FSAQ) was completed prior to randomisation, then annually in a random sample (RS) of women from MMS, USS and control groups. Any women in the study who required repeat screening due to unsatisfactory results formed an Events Sample (ES); they completed questionnaires following an event and annually thereafter...
March 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28319637/online-patient-reported-reviews-of-mohs-micrographic-surgery-qualitative-analysis-of-positive-and-negative-experiences
#9
Shuai Xu, Zaza Atanelov, Ashish C Bhatia
Mohs micrographic surgery (MMS) is the gold standard for treating high-risk skin cancers and skin cancers in areas where skin sparing is essential. However, relatively little is known about patient-reported satisfaction with this procedure. In this study, we used qualitative research methods to determine themes of patient-reported satisfaction and dissatisfaction with MMS on one popular online resource (RealSelf). Real-world patient feedback provides an opportunity for physicians to explore the patient mind-set and to target areas of potential improvement in MMS patient satisfaction...
February 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28296794/solitary-large-keratoacanthomas-of-the-head-and-neck-an-observational-study
#10
Anthony M Rossi, Brian Park, Bernice Qi, Erica H Lee, Klaus J Busam, Kishwer S Nehal
BACKGROUND: Solitary large keratoacanthomas (KAs) of the head and neck present a management dilemma, as no reliable means to predict the clinical course is available. Although typically considered a low-grade tumor, KAs are reported to invade/metastasize, prompting more aggressive treatment. There is little published regarding factors that predict when a KA behaves more like an aggressive squamous cell carcinoma (SCC). OBJECTIVE: To study the clinical and pathologic features of large solitary head and neck KAs and assess response to intralesional methotrexate (IL-MTX) as well as predictors of clinical course...
March 14, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28274982/implementation-of-an-interprofessional-clinical-pharmacology-selective-learning-experience-for-pharmacy-residents-and-medical-students
#11
Garrett E Schramm, Prasanna P Narayanan, Darryl S Chutka, Wayne T Nicholson
PURPOSE: The implementation of an interprofessional clinical pharmacology selective (CPS) learning experience for pharmacy residents and medical students is described. SUMMARY: The opportunity for pharmacy residents to provide didactic lectures at a college of pharmacy and to develop teaching and preceptor skills with experiential pharmacy students may be limited by institution-specific affiliations and geographic location. In order to overcome these barriers, the Mayo Clinic Hospital postgraduate year 1 (PGY1) pharmacy residency program implemented an interprofessional learning experience in which pharmacy residents serve the role of preceptors for first- and second-year medical students on a CPS...
March 15, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28272106/m1-and-m2-macrophages-clinicopathological-significance-in-cutaneous-melanoma
#12
Monica Falleni, Federica Savi, Delfina Tosi, Elena Agape, Amilcare Cerri, Laura Moneghini, Gaetano P Bulfamante
Skin malignant melanoma (MM) is an aggressive cancer with an increasing incidence with limited therapies in advanced stages. Tumor-associated macrophages (TAMs) are the major immune constituent of the MM microenvironment and contribute toward its prognosis. TAMs' characterization and localization in human cancer is important to understand cancer progression and to identify molecular personalized therapies. M2 TAMs in stage I-II MMs are associated with worse prognostic parameters. A comprehensive M1-macrophage and M2-macrophage intratumoral localization and quantification in all stages of skin MMs is documented here with its clinical significance...
March 7, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28265305/the-10th-anniversary-of-the-publication-of-genes-and-environment-memoir-of-establishing-the-japanese-environmental-mutagen-society-and-a-proposal-for-a-new-collaborative-study-on-mutagenic-hormesis
#13
Shizuyo Sutou
The Japanese Environmental Mutagen Society (JEMS) was established in 1972 by 147 members, 11 of whom are still on the active list as of May 1, 2016. As one of them, I introduce some historic topics here. These include 1) establishment of JEMS, 2) the issue of 2-(2-furyl)-3-(3-nitro-2-furyl)acrylamide (AF-2), 3) the Mammalian Mutagenicity Study Group (MMS) and its achievements, and 4) the Collaborative Study Group of the Micronucleus Test (CSGMT) and its achievements. In addition to these historic matters, some of which are still ongoing, a new collaborative study is proposed on adaptive response or hormesis by mutagens...
2017: Genes and Environment: the Official Journal of the Japanese Environmental Mutagen Society
https://www.readbyqxmd.com/read/28264457/utilization-of-a-terrestrial-laser-scanner-for-the-calibration-of-mobile-mapping-systems
#14
Seunghwan Hong, Ilsuk Park, Jisang Lee, Kwangyong Lim, Yoonjo Choi, Hong-Gyoo Sohn
This paper proposes a practical calibration solution for estimating the boresight and lever-arm parameters of the sensors mounted on a Mobile Mapping System (MMS). On our MMS devised for conducting the calibration experiment, three network video cameras, one mobile laser scanner, and one Global Navigation Satellite System (GNSS)/Inertial Navigation System (INS) were mounted. The geometric relationships between three sensors were solved by the proposed calibration, considering the GNSS/INS as one unit sensor...
February 27, 2017: Sensors
https://www.readbyqxmd.com/read/28250972/antitumor-effects-of-naturally-occurring-cardiac-glycosides-convallatoxin-and-peruvoside-on-human-er-and-triple-negative-breast-cancers
#15
Vivek Kaushik, Neelam Azad, Juan Sebastian Yakisich, Anand Krishnan V Iyer
Breast cancer is second most prevalent cancer in women, and the second only to lung cancer in cancer-related deaths. It is a heterogeneous disease and has several subtypes based on the presence or absence of hormone receptors and/or human epidermal growth factor receptor 2 (HER2). Hormone receptor-positive and HER2-enriched cancers can be targeted using hormone and HER2-targeting therapies such as trastuzumab or lapatinib. However, triple-negative breast cancers (TNBCs) do not express any of the receptors and therefore are resistant to most targeted therapies, and cytotoxic chemotherapies are the only viable option available for the treatment of TNBCs...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28241261/outcomes-of-melanoma-in-situ-treated-with-mohs-micrographic-surgery-compared-with-wide-local-excision
#16
Adi Nosrati, Jacqueline G Berliner, Shilpa Goel, Joseph McGuire, Vera Morhenn, Juliana R de Souza, Yildiray Yeniay, Rasnik Singh, Kristina Lee, Mio Nakamura, Rachel R Wu, Ann Griffin, Barbara Grimes, Eleni Linos, Mary Margaret Chren, Roy Grekin, Maria L Wei
Importance: Melanoma in situ (MIS) is increasing in incidence, and expert consensus opinion recommends surgical excision for therapeutic management. Currently, wide local excision (WLE) is the standard of care. However, Mohs micrographic surgery (MMS) is now used to treat a growing subset of individuals with MIS. During MMS, unlike WLE, the entire cutaneous surgical margin is evaluated intraoperatively for tumor cells. Objective: To assess the outcomes of patients with MIS treated with MMS compared with those treated with WLE...
February 22, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28231346/in-vitro-three-dimensional-accuracy-of-digital-implant-impressions-the-effect-of-implant-angulation
#17
Vanessa A Chia, Roxanna J Esguerra, Khim Hean Teoh, Juin Wei Teo, Keng Mun Wong, Keson B Tan
PURPOSE: To compare the three-dimensional (3D) accuracy of conventional impressions (CIs) with digital scans (DSs) using an intraoral scanner (IOS) with intraoral scan bodies (SBs) and varying buccolingual interimplant angulations. A secondary aim was to measure the SB machining tolerance and height with and without application of torque. MATERIALS AND METHODS: Three master models (MMs) with two implants simulating an implant-supported three-unit fixed partial denture for bone-level implants were used...
March 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28230747/dynamic-method-of-neutral-axis-position-determination-and-damage-identification-with-distributed-long-gauge-fbg-sensors
#18
Yongsheng Tang, Zhongdao Ren
The neutral axis position (NAP) is a key parameter of a flexural member for structure design and safety evaluation. The accuracy of NAP measurement based on traditional methods does not satisfy the demands of structural performance assessment especially under live traffic loads. In this paper, a new method to determine NAP is developed by using modal macro-strain (MMS). In the proposed method, macro-strain is first measured with long-gauge Fiber Bragg Grating (FBG) sensors; then the MMS is generated from the measured macro-strain with Fourier transform; and finally the neutral axis position coefficient (NAPC) is determined from the MMS and the neutral axis depth is calculated with NAPC...
February 20, 2017: Sensors
https://www.readbyqxmd.com/read/28225162/mandibular-position-and-movements-suitability-for-diagnosis-of-sleep-apnoea
#19
Jean-Benoit Martinot, Jean-Christian Borel, Valérie Cuthbert, Hervé Jean-Pierre Guénard, Stéphane Denison, Philip E Silkoff, David Gozal, Jean-Louis Pepin
BACKGROUND AND OBJECTIVE: Mandibular movements (MMs) and position during sleep reflect respiratory efforts related to increases in upper airway resistance and micro-arousals. The study objective was to assess whether MM identifies sleep-disordered breathing (SDB) in patients with moderate to high pre-test probability. METHODS: This was a prospective study of 87 consecutive patients referred for an in-laboratory sleep test. Magnetometer-derived MM signals were incorporated into standard polysomnography (PSG)...
April 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28216051/morin-activates-the-nrf2-are-pathway-and-reduces-oxidative-stress-induced-dna-damage-in-pancreatic-beta-cells
#20
Pachamuthu Vanitha, Sankareswaran Senthilkumar, Sireesh Dornadula, Sundaramurthy Anandhakumar, Palanisamy Rajaguru, Kunka Mohanram Ramkumar
Oxidative stress is an important factor contributing to the pathogenesis of diabetes and its complications. In our earlier study, we demonstrated the antidiabetic efficacy of morin by regulating key enzymes of carbohydrate metabolism in diabetic rats. The present study was designed to assess the antigenotoxic potential of morin in pancreatic β-cells, using the COMET assay. To explore its potential mechanisms of action, three genotoxic agents, H2O2 which induces DNA damage by the generation of reactive oxygen species, streptozotocin (STZ) by RNS and Methyl methanesulfonate (MMS) by DNA alkylation was used...
February 16, 2017: European Journal of Pharmacology
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