Search Results
Results 151 - 200 of 535
1 2 3 4 5 6 7 8 9 10 >
Reho John J - - 2012
The etiology of preeclampsia remains unknown. However, a contributing factor to this hypertensive disease of pregnancy is a reduction in uterine perfusion pressure resulting in placental ischemia. Uterine arteries may be a major regulator of this process through changes in vascular reactivity and localized blood flow. The reduced uterine perfusion ...
Christman Mairgareth A - - 2011
• The rare pit hypothesis predicts that the extensive inter-vessel pitting in large early-wood vessels of ring-porous trees should render many of these vessels extremely vulnerable to cavitation by air-seeding. This prediction was tested in Quercus gambelii. • Cavitation was assessed from native hydraulic conductivity at field sap tension and ...
Meeker James - - 2011
: We investigated the role of negative pressure therapy (NPT) in postoperative primary wound treatment and closure. To date, extensive evidence exists demonstrating the benefit of negative pressure dressings in the treatment of open wounds; our experiment tested the hypothesis that negative pressure dressings improve healing of closed (sutured) wounds. ...
Nakano Daisuke D Department of Pharmacology, Kagawa University Medical School, Kagawa, Japan. - - 2012
We recently reported that aldosterone-induced cellular senescence via an increase in p21, a cyclin-dependent kinase (CDK) inhibitor, in rat kidney and cultured human proximal tubular cells. In the present study, we investigated the contribution of aldosterone to the renal p21 expression and senescence during the development of angiotensin II (AngII)-induced ...
Nilsson Anna - - 2011
In contrast to the well-understood inflammatory pathway driven by TNFα, by which implant-derived particles induce bone resorption, little is known about the process in which loosening is generated as a result of force-induced mechanical stimulus at the bone-implant interface. Specifically, there is no knowledge as to what cells or signaling ...
Di Martino Elena S - - 2011
Animal models of ventricular tachypacing (VTP) have been successfully used to reproduce the relevant features observed in patients with atrial fibrillation, such as increased atrial pressure and volume, ion-channel alterations and fibrosis. After performing VTP on a healthy Yorkshire pig, we measured an increase in volume of 60%, a two-fold ...
Gómez-Guzmán Manuel - - 2011
Flavanol-rich diets have been reported to exert beneficial effects in preventing cardiovascular diseases, such as hypertension. We studied the effects of chronic treatment with epicatechin on blood pressure, endothelial function, and oxidative status in deoxycorticosterone acetate (DOCA)-salt-induced hypertension. Rats were treated for 5weeks with (-)-epicatechin at 2 or 10mg kg(-1)day(-1). ...
Palma-Rigo Kesia - - 2011
OBJECTIVE: Schlager hypertensive (BPH/2J) mice have been suggested to have high blood pressure (BP) due to an overactive sympathetic nervous system (SNS), but the contribution of the renin-angiotensin system (RAS) is unclear. In the present study, we examined the cardiovascular effects of chronically blocking the RAS in BPH/2J mice. METHODS: ...
von See C - - 2011
von See C, Rücker M, Koch A, Kokemueller H, Schumann P, Ziebolz D, Gellrich N-C. The influence of pressure changes on endodontically treated teeth during simulated dives. International Endodontic Journal,. ABSTRACT: Aim  To measure and evaluate pressure changes in the pulp chambers of extracted teeth exposed to hyperbaric conditions during ...
Meeker James - - 2011
OBJECTIVES:: We investigated the role of negative pressure therapy (NPT) in postoperative primary wound treatment and closure. To date, extensive evidence exists demonstrating the benefit of negative pressure dressings in the treatment of open wounds; our experiment tested the hypothesis that negative pressure dressings improve healing of closed (sutured) wounds. ...
Kou Xiaohong - - 2011
BACKGROUND: Aroma is one important fruit sensory attribute influenced by the volatile constituents related to species, variety and technological treatments. We analysed the variations of volatile compounds in five pear cultivars and investigated their changes related to different pear organs, different ripening stages, 1-MCP treatment and ultra-high-pressure pasteurisation. RESULTS: Considerable ...
Wang Chao C Department of Food Science and Technology, The Ohio State University, Columbus, Ohio 43210, United - - 2011
In plants, folate occurs predominantly as 5-methyltetrahydrofolate (5MTHF) polyglutamyl forms. Differences in stability and bioavailability of food folate compared to synthetic folic acid have been attributed to the presence of the polyglutamyl chain. High-pressure processing (HPP) was tested for whether it might shorten polyglutamyl chains of 5MTHF species in fresh ...
Malmsjö Malin - - 2011
BACKGROUND: Negative pressure wound therapy (NPWT) contracts the wound and alters the microvascular blood flow in the wound edge, which may be crucial in promoting wound healing. The aim of the present study was to examine these biological effects in the wound edge using different types of wound fillers. METHODS: ...
Myint Phyo K PK Norwich Medical School, Chancellors Drive, University of East Anglia, Norwich NR4 7TJ, UK. - - 2011
The effect of fruit and vegetable consumption and blood pressure is unclear. A population-based cross-sectional study was conducted in 20 926 men and women aged 40 to 79 years participating in the European Prospective Investigation Into Cancer-Norfolk who completed a health questionnaire and attended a clinic from 1993 to 1997. ...
McKay Alan M - - 2011
The objective of this study was to assess the effect of High Pressure Homogenisation (HPH) compared with High Hydrostatic Pressure (HHP) on the microbiological quality of raw apple juice during storage at ideal (4 °C) and abuse (12 °C) temperatures. In the case of HPH, only low numbers of micro-organisms were detected ...
Ritz Thomas - - 2011
Objectives To build upon prior research on stress-related breathing pattern changes in asthma. Previous research has considered a limited set of respiratory parameters and has remained equivocal. Emotions and stress are known to change the respiratory pattern. In asthma, certain breathing patterns have adverse effects on the airways and lead ...
Gupta Rockendra R Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210, - - 2011
This study highlights the changes in lycopene and β-carotene retention in tomato juice subjected to combined pressure-temperature (P-T) treatments ((high-pressure processing (HPP; 500-700 MPa, 30 °C), pressure-assisted thermal processing (PATP; 500-700 MPa, 100 °C), and thermal processing (TP; 0.1 MPa, 100 °C)) for up to 10 min. Processing treatments utilized ...
Massey Christopher J - - 2011
A significant biochemical change that takes place in intervertebral disc degeneration is the loss of proteoglycans in the nucleus pulposus. Proteoglycans attract fluid, which works to reduce mechanical stresses in the solid matrix of the nucleus and provide a hydrostatic pressure to the annulus fibrosus, whose fibrous nature accommodates this ...
Cong Yan - - 2011
Abnormal and excessive plantar pressure and shear are potential risk factors for high-heeled related foot problems, such as forefoot pain, hallux valgus deformity and calluses. Plantar shear stresses could be of particular importance with an inclined supporting surface of high-heeled shoe. This study aimed to investigate the contact pressures and ...
Timofeev Ivan I Division of Neurosurgery, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom. - - 2011
Bedside monitoring of cerebral metabolism in traumatic brain injury (TBI) with microdialysis is gaining wider clinical acceptance. The objective of this study was to examine the relationship between the fundamental physiological neuromonitoring modalities intracranial pressure (ICP), cerebral perfusion pressure (CPP), brain tissue oxygen (P(bt)O(2)), and cerebrovascular pressure reactivity index (PRx), ...
Anesäter Erik - - 2011
The use of a rigid disc as a barrier between the wound bed and the wound filler during negative pressure wound therapy (NPWT) has been suggested to prevent damage to exposed organs. However, it is important to determine that the effects of NPWT, such as wound contraction and fluid removal, ...
Anesäter Erik - - 2011
Negative pressure wound therapy (NPWT) contracts the wound and alters the pressure in the tissue of the wound edge, which accelerates wound healing. The aim of this study was to examine the effect of the type (foam or gauze) and size (small or large) of wound filler for NPWT on ...
Cilurzo Francesco - - 2011
The current work aimed to propose a system of scoring to rationalize and support the selection of the optimal diameter and length of needles. Four formulations at different viscosity and needles ranging from 21 to 26 G and length ranging from 16 to 40 mm were used. Plunger-stopper breakloose force, ...
Martínez-Nova Alfonso - - 2011
Mild hallux valgus (HV), which can lead to alteration of the plantar pressure pattern with an overpressure under the hallux, can be repaired percutaneously. Our goals were to determine whether the percutaneous distal soft tissue release (DSTR)-Akin procedure restores the loading pattern and to evaluate which are the determinants of ...
Karabulut Murat - - 2011
Blood flow restriction training technique can be affected by several factors resulting in changes in responses to training; therefore it is necessary to investigate and reveal detailed information about this novel training technique. Participants had their thigh size, thickness of subcutaneous fat, and regional bone free muscle mass measured prior ...
Jia Xiao-Yan - - 2011
The vascularized capitate transposition has been designed to treat advanced Kienböck disease, in which the necrotic lunate is excised and the vascularized capitate bone graft is proximally shifted into the lunate fossa to reconstruct the radiocarpal joint. Since it notably alters the normal anatomy of the wrist, the anatomical alterations ...
Auerbach Joshua D - - 2011
STRUCTURED ABSTRACT: Study Design: In-vitro cadaveric studyObjective: The purpose of this study was to quantify the relative biomechanical protection resulting from "saving a level" in long spinal fusions.Summary of Background Data: "Saving levels" in spinal deformity surgery is desirable. Constructs with lowest instrumented vertebrae (LIV) in the lumbar spine may ...
Job Agnès - - 2011
Middle ear sensory information has never been localized in the homunculus of the somatosensory cortex (S1). We investigated the somatosensory representation of the middle ear in 15 normal hearing subjects. We applied small air pressure variations to the tympanic membrane while performing a 3T-fMRI study. Unilateral stimulations of the right ...
Hughes C M - - 2011
Reflexology has been shown to reduce anxiety and stress in various populations. The mechanism by which this occurs may be in modulating autonomic nervous system (ANS) function; however; there is limited evidence available in the area. The aim of the study was to investigate the feasibility of using an experimental ...
Selvaraj N - - 2011
Accurate and early detection of blood volume loss would greatly improve intraoperative and trauma care. This study has attempted to determine early diagnostic and quantitative markers for blood volume loss by analyzing photoplethysmogram (PPG) data from ear, finger and forehead sites with our high-resolution time-frequency spectral (TFS) technique in spontaneously ...
Kasanen I H E - - 2011
Individual and permanent identification of experimental animals is a common and often essential research practice. There is little information available on the short-term effects of these procedures on the animals. In this study, seven rats were implanted with telemetric devices. The effects of three different identification methods (ear tattoo, ear ...
Myers Stephan R - - 2011
BACKGROUND: Anastomotic leak after gastrointestinal anastomosis is a well-known and serious complication, yet there is no standardized approach to reliably create an anastomosis with sufficient mechanical properties to consistently avoid an anastomotic leak. The purpose of this study was to evaluate the relationships among combined tissue thickness, tissue compression, closed ...
Marchioni Daniele - - 2011
Epitympanic primary cholesteatoma represents a challenge for ENT surgeons. Its exact pathogenesis is still unknown because of the very complex anatomy of this region. Until now, only a few authors have described this region and tried to hypothesize the causes that could lead to cholesteatoma genesis. We hypothesize the existence ...
Krzemiński T F - - 2011
Krzemiński TF, Gilowski Ł, Wiench R, Płocica I, Kondzielnik P, Sielańczyk A. Comparison of ropivacaine and articaine with epinephrine for infiltration anaesthesia in dentistry - a randomized study. International Endodontic Journal. ABSTRACT: Aim  To compare the efficacy, onset time and duration of maxillary infiltration anaesthesia with 0.5% plain ropivacaine or ...
Tompkins Marc - - 2011
PURPOSE: To evaluate whether the use of knotless lateral anchors in a suture bridge construct produces better contact area and pressure parameters than a suture bridge construct with standard lateral anchors that require knots or a double-row repair. The hypothesis was that knotless lateral anchors would produce better contact area ...
Hayward Wap - - 2011
Objective: Hydrodissection and high-pressure injection are important for the treatment of dense connective tissue lesions including rheumatoid nodules, Dupuytren's contracture, and trigger finger. The present study determined the optimal syringes for high-pressure injection of dense connective tissue lesions. Methods: Different sizes (1, 3, 5, 10, 20, and 60 mL) of ...
Pattavilakom Ananthababu - - 2011
BACKGROUND:: Retraction injury might explain the soft tissue complications seen after anterior cervical surgery. A novel retractor system (SRS), using a principle of bone fixation with rotation, has been shown to reduce retraction pressure in a cadaveric model of anterior cervical decompression and fusion (ACDF). OBJECTIVE:: To compare conventional Cloward ...
Christal Aric A - - 2011
: The purpose of this study was to examine the efficacy of a fluoroscopically guided hip capsulotomy. : Ten fresh-frozen paired cadaveric hips were injected under fluoroscopic guidance with saline sufficient to generate an intra-articular pressure greater than 58 mmHg. The pressure was monitored continuously using a percutaneous transducer. A ...
Atik O Sahap - - 2011
We describe a case, which gives an answer to the question of 'Does the surgical repair of the acute Achilles tendon ruptures cause the structural changes in the 15-year follow-up?' The only complaint of the patient was the feeling of that the size of the left foot is smaller than ...
Lin Hsin-Ching - - 2011
To study the effect of Z-palatopharyngoplasty plus radiofrequency of the base of the tongue on middle ear function. A retrospective review of a prospective data set at a tertiary care center. University-affiliated medical center. The study population included 47 patients (42 men and 5 women; mean age, 40.8 years) who ...
Kim Doo-Sup - - 2011
BACKGROUND: Despite the attention that has been paid to restoration of the capsulolabral complex anatomic insertion onto the glenoid, studies comparing the pressurized contact area and mean interface pressure at the anatomic insertion site between a single-row repair and a double-row labral repair have been uncommon. PURPOSE: The purpose of ...
Noble E J EJ Department of Surgery, Plymouth Hospitals NHS Trust, Plymouth, - - 2011
Several instruments are available for open and laparoscopic dissection, including electrothermal bipolar vessel sealers and ultrasonically coagulating shears. The vessel sealing ability of three devices in colorectal specimens was compared in an experimental study. Surgical specimens from patients scheduled for elective open or laparoscopic colorectal resection were allocated to one ...
Yu Jun - - 2011
The aim of the present study was to examine the expression of glutamine synthetase (GS) in rat retinal Müller cells induced by different levels of hydrostatic pressure using a novel pressure mechanism. pH, PCO(2) or PO2 in culture medium as determined by gas analysis was used to examine the pressure ...
Schrey Aleksi - - 2011
Abstract Conclusion: This study suggests that although oxygen partial pressure in tissue (p (ti)O(2)) measurement is a feasible method for continuous postoperative monitoring of free flaps, low correlation between blood pressure (BP) and p (ti)O(2) might predict compromised overall outcome. Thus, it is of utmost importance to keep the BP ...
Hofer Jason K - - 2011
BACKGROUND: Repetitive kneeling in certain occupations, hobbies and cultures is associated with tibiofemoral joint osteoarthritis. The biomechanics of kneeling is therefore of interest. This cadaveric study investigated tibiofemoral joint contact areas, pressures, and kinematics in response to kneeling. METHODS: Five human cadaveric knees were subjected to simulated kneeling at flexion ...
De Maria Carmelo - - 2011
A novel squeeze pressure bioreactor (SQPR) for non-contact hydrodynamic stimulation of cartilage is described. The bioreactor is based on a small piston which moves up and down, perpendicular to a tissue construct, in a fluid-filled chamber. Fluid displaced by the piston generates a pressure wave as well as shear stress ...
Portnoy Sigal - - 2011
Spinal cord injury patients are under daily risk for developing deep tissue injury which is a severe pressure ulcer that initiates in soft tissues at the bones' proximity. We aimed to formulate a patient-specific biomechanical model that can continuously monitor internal tissue stresses in real time. We adopted a formulation ...
Duggan John P JP - - 2011
Complete ulnar collateral ligament (UCL) injury increases articular pressure and reduces contact area compared with the normal intact UCL. UCL reconstruction restores the contact area and contact pressure observed in the native joint. Six male cadaveric elbows were mounted on a custom jig capable of simulating the 2 critical phases ...
Voermans R P - - 2011
Colonic perforation is a serious complication of colonoscopy, with surgical repair usually indicated. The aim was to compare acute strength of various endoscopic colonic closure techniques by assessing air leak pressures in a previously described ex vivo experimental apparatus. Standardized colonic perforations were created using fresh porcine colon and subsequently ...
Curtis Cara Anne - - 2011
A pressure ulcer is a medical complication that arises in persons with decreased mobility and/or sensation. Deep pressure ulcers starting at the bone-muscle interface are the most dangerous, as they can cause extensive damage before showing any signs at the skin surface. We previously proposed a novel intervention called intermittent ...
1 2 3 4 5 6 7 8 9 10 >