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determinants of occlusal morphology

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https://www.readbyqxmd.com/read/28930824/evaluating-the-morphology-of-the-left-atrial-appendage-by-a-transesophageal-echocardiographic-3-dimensional-printed-model
#1
Hongning Song, Qing Zhou, Lan Zhang, Qing Deng, Yijia Wang, Bo Hu, Tuantuan Tan, Jinling Chen, Yiteng Pan, Fazhi He
The novel 3-dimensional printing (3DP) technique has shown its ability to assist personalized cardiac intervention therapy. This study aimed to determine the feasibility of 3D-printed left atrial appendage (LAA) models based on 3D transesophageal echocardiography (3D TEE) data and their application value in treating LAA occlusions.Eighteen patients with transcatheter LAA occlusion, and preprocedure 3D TEE and cardiac computed tomography were enrolled. 3D TEE volumetric data of the LAA were acquired and postprocessed for 3DP...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28871268/xylem-vessel-diameter-affects-the-compartmentalization-of-the-vascular-pathogen-phaeomoniella-chlamydospora-in-grapevine
#2
Jérôme Pouzoulet, Elia Scudiero, Marco Schiavon, Philippe E Rolshausen
Fungal wilt diseases are a threat to global food safety. Previous studies in perennial crops showed that xylem vessel diameter affects disease susceptibility. We tested the hypothesis that xylem vessel diameter impacts occlusion processes and pathogen compartmentalization in Vitis vinifera L. We studied the interaction between four grape commercial cultivars with the vascular wilt pathogen Phaeomoniella chlamydospora. We used qPCR and wood necrotic lesion length to measure fungal colonization coupled with histological studies to assess differences in xylem morphology, pathogen compartmentalization, and fungal colonization strategy...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28866449/fractional-flow-reserve-in-below-the-knee-arteries-with-critical-limb-ischemia-and-validation-against-gold-standard-morphologic-functional-measures-and-long-term-clinical-outcomes
#3
Zoltán Ruzsa, Szilárd Róna, Gábor G Tóth, Péter Sótonyi, Olivier F Bertrand, Balázs Nemes, Béla Merkely, Kálmán Hüttl
INTRODUCTION: The aim of this study was to assess the applicability of fractional flow reserve measurement (FFR) in below-the-knee (BTK) arteries and to evaluate its correlation with non-invasive functional parameters before and after angioplasty. METHODS: We enrolled 39 patients with severe BTK arterial lesions. Inclusion criteria were critical limb ischemia (Rutherford 4-6) and angiographically proven arterial stenosis of the distal lower limb (percent diameter stenosis ≥70%)...
July 18, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28780385/relationships-between-chewing-rate-occlusion-cephalometric-anatomy-muscle-activity-and-masticatory-performance
#4
Brent A Fulks, Kathryn X Callaghan, Claire D Tewksbury, Geoffrey E Gerstner
OBJECTIVE: Mastication consists of rhythmic jaw openings and closings. Recent studies suggest that muscle mechanical properties determine the rhythmic rate; however, speed-accuracy tradeoffs may also play a role. This study evaluated how variation in chewing rate affected chewing performance, how masticatory muscle activity varied with chewing rate, and whether morphology and demographics contributed to performance. DESIGN: Chewing performance and muscle activity were sampled in 23 healthy, fully-dentate adults, who chewed a standardized test food to a metronome set at 0...
July 29, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28763889/-study-of-neuron-protective-effect-and-mechanism-of-neuregulin1%C3%AE-against-cerebral-ischemia-reperfusion-induced-injury-in-rats
#5
Y Q Ji, R Zhang, L Teng, H Y Li, Y L Guo
Objective: Thecurrent study is to explore the neuron-protective mechanism of neuregulin1β (NRG1β) in a rat model of middle cerebral artery occlusion/reperfusion (MCAO/R) through inhibiting the c-Jun phosphorylation. Methods: After 24 h of MCAO/R (referring to Longa's method), neurobehavioral function was measured by modified neurological severity score (mNSS) test; the cerebral infarction volume was detected by triphenyltetrazolium chloride (TTC) staining; the blood brain barrier (BBB) permeability was measured by Evans Blue (EB); the neuron morphology of brain tissue was observed by Nissl stain; the ultra-structures of the neurons were observed by transmission electron microscopy (TEM); the apoptotic neurons were counted by in situ cell death detection kit colocalized with NeuN; the expressions of phospho-c-Jun was determined by immunofluorescent labeling and Western blot analysis...
July 18, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28728086/nanostructured-lipid-systems-modified-with-waste-material-of-propolis-for-wound-healing-design-in-vitro-and-in-vivo-evaluation
#6
Hélen Cássia Rosseto, Lucas de Alcântara Sica de Toledo, Lizziane Maria Belloto de Francisco, Elisabetta Esposito, Yunsook Lim, Giuseppe Valacchi, Rita Cortesi, Marcos Luciano Bruschi
Propolis, a natural compound that can accelerate the wound healing process, is mainly used as ethanolic extract. The extractive solution may also be obtained from the propolis by-product (BP), transforming this waste material into a pharmaceutical active ingredient. Even if propolis does not show toxicity, when used as an extract over harmed skin or mucosa, the present ethanol content may be harmful to the tissue recovering, besides hindering the drug release. This study describes the development of solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) as topical propolis delivery systems and the investigation of their in vitro and in vivo activities...
July 10, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28721987/evaluation-of-occlusal-groove-patterns-of-mandibular-first-and-second-molars-in-an-indian-population-a-forensic-anthropological-study
#7
Rashmi Gs Phulari, Rajendrasinh Rathore, Mili D Takvani, Shivani Jain
BACKGROUND: The study of dental morphological characteristics is important in anthropological research as it can provide information on the phylogenetic relationship between species, as well as variations and diversities within a population. AIMS AND OBJECTIVES: To determine the prevalence of six types of mandibular second molars in Gujarat state and the results can be used in both forensic anthropological researches and clinical aspects of dental sciences. MATERIALS AND METHODS: This descriptive investigation was undertaken among 1000 students (13-25 years old) in high schools and dental institutes of Gujarat state...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28721054/neuroprotective-effects-of-curdione-against-focal-cerebral-ischemia-reperfusion-injury-in-rats
#8
Xing-Jie Li, Li Liang, Hong-Xia Shi, Xiao-Ping Sun, Jing Wang, Lian-Sheng Zhang
BACKGROUND: Curdione is one of the most highly concentrated component of the active constituents in E-zhu, which has been reported to possess a variety of activities. However, the pharmacologic neuroprotective activity of curdione has not been evaluated. The present study aimed to investigate the protective effect of curdione on focal cerebral ischemia reperfusion-induced injury in rats and further exploring the underlying mechanisms. MATERIALS AND METHODS: Adult male Sprague Dawley rats were subjected to middle cerebral artery occlusion (MCAO) surgery for 2 h, followed by reperfusion stage...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28704875/sonographic-and-doppler-sonographic-diagnosis-of%C3%A2-neonatal-ischemic-stroke
#9
Karl-Heinz Deeg
Children are particularly at risk for stroke in the neonatal period. 1/3 of all strokes in children occur during the perinatal period. The incidence of perinatal stroke is 1:4000. A differentiation is made between ischemic stroke and hemorrhagic stroke. Ischemic strokes are caused by arterial occlusion due to thrombosis or embolism. As a result of the nonspecific clinical symptoms in this age group, diagnosis is usually made too late. The only relatively specific symptom is focal cerebral seizure during the first week of life...
August 2017: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/28615104/-mechanism-of-heart-and-lung-injury-induced-by-cerebral-ischemia-reperfusion-in-both-young-and-old-mice
#10
Yanni Lyu, Longsheng Fu, Yisong Qian, Mingjin Jiang, Libiao He, Aijun Ouyang, Yu Zheng
Objective To study the mechanism of heart and lung injury after cerebral ischemia/reperfusion in mice. Methods C57BL/6J mice were divided into young and old groups according to their ages, the former being 5-6 months old and the latter being 20-21 months old. Each group was divided into five subgroups subjected to sham operation, middle cerebral artery occlusion for 1-hour ischemia followed by 1-, 12-, 24-, 48-hour reperfusion. At different reperfusion time, HE and TUNEL staining were used to observe the morphological changes of heart and lung tissues; meanwhile, chemical colorimetry was performed to determine the changes of cardiac Na(+)-K(+)-ATPase and Ca(2+)-ATPase; the lung indexes were evaluated; the levels of nuclear factor (NF)-κBp65, p-NF-κBp65, IκBα, p-IκBα were detected by Western blotting; the levels of interleukin 1β (IL-1β), tumor necrosis factor α (TNF-α) were determined by ELISA; and the release of NO was examined by colorimetry...
June 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28579278/higher-30-day-mortality-in-patients-with-familial-abdominal-aortic-aneurysm-after-evar
#11
K M van de Luijtgaarden, F Bastos Gonçalves, S E Hoeks, J D Blankensteijn, D Böckler, R J Stolker, H J M Verhagen
OBJECTIVES: To determine the influence of a positive family history for aneurysms on clinical success and mortality after endovascular aneurysm repair (EVAR). METHODS: From 2009 to 2011, 1262 patients with abdominal aortic aneurysms (AAA) treated by EVAR were enrolled in a prospective, industry sponsored clinical registry ENGAGE. Patients were classified into familial and sporadic AAA patients according to baseline clinical reports. Clinical characteristics, aneurysm morphology, and follow-up were registered...
June 1, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28565759/oral-administration-of-ampelopsin-protects-against-acute-brain-injury-in-rats-following-focal-cerebral-ischemia
#12
Xiao-Li Ye, Ling-Qun Lu, Wei Li, Qi Lou, Hong-Gang Guo, Qiao-Juan Shi
Ampelopsin (AMP) is isolated from the Chinese medicinal herb Ampelopsis grossedentata (Hand-Mazz) and has been associated with numerous biological and pharmacological activities. However, it is not clear whether AMP has a direct protective effect on cerebral ischemia reperfusion injury. Therefore, the present study investigated its role in acute brain injury following focal cerebral ischemia in rats. The current study induced transient focal cerebral ischemia by performing middle cerebral artery occlusion (MCAO) for 60 min, followed by 24 h of reperfusion...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28558311/prevalence-of-the-number-of-cusps-and-occlusal-groove-patterns-of-the-mandibular-molars-in-a-saudi-arabian-population
#13
Nayef H Felemban, Bhari S Manjunatha
A dental trait in humans can be a valuable diagnostic tool in anthropological studies for classifying and characterizing different ethnic groups. Many studies have attempted to relate the prevalence of dental morphologies with different factors. Several variations, such as variations in the size, number of cusps, and groove pattern, have been observed in the mandibular molars of diverse populations. The morphological features of the occlusal surfaces of the mandibular molars have been described by Gregory and Hellman...
July 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28508173/neuroprotective-effects-of-lycium-barbarum-polysaccharide-on-focal-cerebral-ischemic-injury-in-mice
#14
Peng Zhao, Ru Zhou, Xiao-Yun Zhu, Gang Liu, Yu-Ping Zhao, Peng-Sheng Ma, Wei Wu, Yang Niu, Tao Sun, Yu-Xiang Li, Jian-Qiang Yu, Zhong-Ming Qian
Increasing evidence demonstrates inflammation contributes to neuronal death following cerebral ischemia. Lycium barbarum polysaccharide (LBP) has been reported to prevent scopolamine-induced cognitive and memory deficits. We recently indicated that LBP exerts neuroprotective effect against focal cerebral ischemic injury in mice via attenuating the mitochondrial apoptosis pathway. The aim of this study was to investigate the neuroprotective effects of LBP against the behavioral dysfunction induced by focal cerebral ischemia injury in mice...
May 15, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28505080/first-insights-into-human-fingertip-regeneration-by-echo-doppler-imaging-and-wound-microenvironment-assessment
#15
Paris Jafari, Camillo Muller, Anthony Grognuz, Lee Ann Applegate, Wassim Raffoul, Pietro G di Summa, Sébastien Durand
Fingertip response to trauma represents a fascinating example of tissue regeneration. Regeneration derives from proliferative mesenchymal cells (blastema) that subsequently differentiate into soft and skeletal tissues. Clinically, conservative treatment of the amputated fingertip under occlusive dressing can shift the response to tissue loss from a wound repair process towards regeneration. When analyzing by Immunoassay the wound exudate from occlusive dressings, the concentrations of brain-derived neurotrophic factor (BDNF) and leukemia inhibitory factor (LIF) were higher in fingertip exudates than in burn wounds (used as controls for wound repair versus regeneration)...
May 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28502550/lower-extremity-computed-tomography-angiography-can-help-predict-technical-success-of-endovascular-revascularization-in-the-superficial-femoral-and-popliteal-artery
#16
Nathan K Itoga, Tanner Kim, Anna M Sailer, Dominik Fleischmann, Matthew W Mell
OBJECTIVE: Preprocedural computed tomography angiography (CTA) assists in evaluating vascular morphology and disease distribution and in treatment planning for patients with lower extremity peripheral artery disease (PAD). The aim of the study was to determine the predictive value of radiographic findings on CTA and technical success of endovascular revascularization of occlusions in the superficial femoral artery-popliteal (SFA-pop) region. METHODS: Medical records and available imaging studies were reviewed for patients undergoing endovascular intervention for PAD between January 2013 and December 2015 at a single academic institution...
September 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28480846/dependence-of-morphometric-parameters-of-the-dental-occlusion-on-the-type-of-the-lower-jaw-growth-in-children-with-class-ii1-dentofacial-anomalies-who-line-in-the-northern-ukraine
#17
L V Galich, V Kuroedova, Yu Lakhtin, L B Galich, P Moskalenko
The aim of the work was to study the structure of dentofacial anomalies in children and adolescents in Sumy city and Sumy oblast, to identify dentoalveolar morphological peculiarities of the occlusion in 10-13 years old patients with class ІІ1 anomalies according to Angle's classification with different types of lower jaw bone growth. A retrospective analysis of 2236 outpatient dental cards of urban and rural patients with orthodontic pathology was conducted. Patients were divided into three age groups: 6-9 years old (early mixed occlusion) - 592 children; 10-13 years old (late mixed occlusion) - 1180 children; over 13 years old (permanent occlusion) - 464 persons; besides 76 patients with class ІІ1 anomalies according to Angle's classification aged 10-13 years were examined...
March 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28478981/effects-of-noggin-transfected-neural-stem-cells-on-neural-functional-recovery-and-underlying-mechanism-in-rats-with-cerebral-ischemia-reperfusion-injury
#18
Jun-de Zhu, Jun-Jie Wang, Guo Ge, Chao-Sheng Kang
OBJECTIVE: To investigate neuroprotection of noggin-transfected neural stem cells (NSCs) against focal cerebral ischemia reperfusion injury (IRI) in rats. METHODS: Eighty Wistar rats were randomly divided into the sham, IRI, NSCs, and noggin + NSCs groups. Noggin containing adenoviral vectors was transfected into rat NSCs. Rats were subjected to 2.0 hours middle cerebral artery occlusion and reperfusion 1.0 hour, followed by infusion into the lateral ventricles of NSCs alone, noggin-transfected NSCs, and saline at 3 days in the NSCs, noggin + NSCs, and sham groups, respectively...
May 3, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28474283/hucmncs-protect-vascular-endothelium-and-prevent-isr-after-endovascular-interventional-therapy-for-vascular-diseases-in-t2dm-rabbits
#19
Haixia Ding, Tong Zhang, Yaping Du, Bei Liu, Yueqin Liu, Fujun Wang
The therapeutic effect of transplantation of human umbilical cord blood cell-derived mononuclear cells (HUCMNCs) on treating in-stent restenosis (ISR) after endovascular interventional therapy (EIT) was evaluated in preclinical rabbit model of type 2 diabetes mellitus (T2DM)-related peripheral artery disease (PAD). HUCMNCs were transplanted to T2DM rabbits subjected to femoral artery occlusion surgery and received EIT. Serum concentration of soluble vascular endothelial cadherin (VE-cad) and plasma concentration of lipoprotein-associated phospholipase A2 (Lp-PLA2) were determined with enzyme-linked immunosorbent assay before and after the transplantation...
May 4, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28362646/the-de-winter-ecg-pattern-morphology-and-accuracy-for-diagnosing-acute-coronary-occlusion-systematic-review
#20
Niall P Morris, Richard Body
The De Winter ECG pattern has been reported to indicate acute left anterior descending coronary artery occlusion and is often considered to be an 'ST elevation myocardial infarction (STEMI) equivalent'. We aimed to investigate the morphology of the 'De Winter ECG pattern' and evaluate the test characteristics of the De Winter pattern for the diagnosis of acute coronary occlusion. We identified papers through the Medline, EMBASE and COCHRANE databases and screened for bias using QUADAS-2. First, measurements were recorded from every ECG reported in the literature and aggregated...
August 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
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