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Results 351 - 400 of 820
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King, N.A. - - 2010
Background: Exercise is widely promoted as a method of weight management, while the other health benefits are often ignored. The purpose of this study was to examine whether exercise-induced improvements in health are influenced by changes in body weight.
Cook, Ian - - 2010
Episodic or recurrent events are a class of data that is frequently reported in health sciences research. The purpose of this paper is to highlight the prevalence of published reports, especially within the South African context, that have used inappropriate statistical techniques when dealing with episodic events and to urge ...
Ramchandani, Girish - - 2010
Objectives. This paper predicts South Africa's performance at the Delhi 2010 Commonwealth Games.
Posthumus, Michael - - 2010
Background. It has been shown that there is an association between various genetic variants and Achilles tendon injuries as well as anterior cruciate ligament (ACL) ruptures. Among other variants the BstUI restriction fragment length polymorphism (RFLP) within the COL5A1 gene has been shown to be over-represented in asymptomatic participants when ...
Gradidge, Philippe - - 2010
Introduction. The environment of youth sport in South Africa has transformed considerably, where adolescent athletes are faced with more pressure from coaches, peers and parents to perform well. Some of the athletes are using nutritional supplements or prohibited means such as doping to cope with these pressures and gain an ...
Jweinat, Jillian - - 2010
O'Connor, Stephen - - 2010
Vereecken, N.J. - - 2010
Chemical mimicry is an essential part of certain interspecific interactions, where the outcome for both species may depend on the degree to which the original signals are mimicked. In this review, we discuss a number of specific cases relating to pollination and obtaining nutrient resources that we believe exemplify recent ...
Arnason, John - - 2010
Plants defend themselves from pests with deterrent or toxic phytochemicals. In addition to the development of preformed mechanical barriers such as cutin and suberin, the first line of defense for plants against pathogens and herbivores is constitutive (preformed) biologically active inhibitors. Because of the adaptation of insects and pathogens to ...
Bernards, M.A. - - 2010
Over the course of evolution, plants have adapted various structural and chemical mechanisms to protect themselves and interact with their environment. The chemical mechanisms are largely based on the secondary metabolites or natural products. Although plant natural products are generally divided into three main categories (terpenoids, alkaloids, and phenylpropanoids) that ...
Mumm, Roland - - 2010
Plants can respond to feeding or egg deposition by herbivorous arthropods by changing the volatile blend that they emit. These herbivore-induced plant volatiles (HIPVs) can attract carnivorous natural enemies of the herbivores, such as parasiloids and predators, a phenomenon that is called indirect plant defense. The volatile blends of infested ...
Dotterl, S. - - 2010
Bees and angiosperms have shared a long and intertwined evolutionary history and their interactions have resulted in remarkable adaptations. Yet, at a time when the "pollination crisis" is of major concern as natural populations of both wild and honey bees (Apis mellifera L., 1758) face alarming decline rates at a ...
Ferrari, Maud - - 2010
The interaction between predator and prey is an evolutionary arms race, for which early detection by either party is often the key to success. In aquatic ecosystems, olfaction is an essential source of information for many prey and predators and a number of cues have been shown to play a ...
Liu, Jinjun - - 2010
It has been shown that angiotensin II (Ang II) is involved in cardiac remodeling mediated by NADPH oxidasedependent reactive oxygen species (ROS). Accordingly, NADPH oxidase-dependent ROS may play a role in cardiac hypertrophy induced by pressure overload. In the present study, we sought to determine whether inhibition of NADPH oxidase ...
dos Santos, - - 2010
After myocardial infarction, the hemodynamics under basal conditions might appear to be unaltered, which makes it difficult to identify cardiac dysfunction by the usual approaches. Thus, we tested the response to sudden afterload stress in infarcted rats with apparently normal ejection function. Control (CT) and infarcted (Ml) Wistar rats with ...
Pei, Lichun - - 2010
Peroxisome proliferator-activated receptor [gamma] (PPAR[gamma]) has been shown to protect against stroke and improve neurological outcome after cerebral ischemia. This study investigated whether activation of cerebral PPAR[gamma] improves recovery from focal cerebral ischemia by reducing expression of cyclin DI, which is associated with programmed neuron death. Focal cerebral ischemia was ...
Saini-Chohan, Harjot - - 2010
Earlier studies have demonsitrated that ouabain-induced increase in [[[Ca.sup.2+]].sub.i], as a consequence of sarcolemma (SL) [Na.sup.+]/[K.sup.+]-ATPase inhibition, is associated with activation of both the SL [Na.sup.+]/[Ca.sup.2+] exchanger and SL [Ca.sup.2+] channels. In view of the importance of sarcoplasmic reticulum (SR) in the regulation of [[[Ca.sup.2+]].sub.i], this study examined the role ...
Gao, Jian - - 2010
Ventricular remodeling is an independent risk factor for many cardiovascular events. Inhibiting ventricular remodeling early may be an effective way to postpone heart failure for patients with cardiovascular illness. The study was designed to examine the effect of sodium houttuyfonate on ventricular remodeling induced by pressure overload in rats, as ...
Frih, Hacene - - 2010
Disturbances in the activity of the corticotropic axis and immune system have been widely reported to be linked to the development of depression. The aim of this study was to explore the effects of ketoconazole, an imidazole derivative that inhibits gonadal and adrenal steroidogenesis, on changes in the total leukocyte ...
Takenouchi, Yasuhiro - - 2010
The aim of the present study was to investigate the relationship among superoxide anion, peroxisome proliferator-activated receptors (PPARs), and endothelium-dependent relaxation in murine aortas organ-cultured in a high-glucose condition. Aortas organ-cultured with a high concentration of glucose (40 mmol/L, 20 h; HG group) exhibited the following characteristics (versus aortas cultured ...
Der-Boghossian, Asdghig - - 2010
The aim of this study was to determine whether the jejunal oligopeptide transporter PepT1 is regulated by insulin and whether this regulation is sex-dependent in type 1 diabetic rats. PepT1 expression, real-time polymerase chain reaction, and Western blots were performed using jejunal segments from 4 groups of male and female ...
Lasker, George - - 2010
It has been reported that sodium nitrite (NaN[O.sub.2]) can act as a storage form of nitric oxide (NO) that can have beneficial pharmacologic actions. The present study was undertaken to investigate the effects of NaN[O.sub.2] on erectile function in the rat. The intracavernosal (i.c.) injection of NaN[O.sub.2] produced dose-related increases ...
Shin, Gwy-Am - - 2010
In an effort to reduce human exposure to adenoviruses through drinking water, we determined the effectiveness of sequential disinfection with an alternative ultraviolet (UV) technology (medium-pressure (MP) UV) and monochloramine. The results of this study showed that MP UV was much more effective than traditional UV technology (lowpressure (LP) UV) ...
Pathak, Ravi - - 2010
Arthrospira (Spirulina) platensis is widely used as a food supplement and has been an economically important species for centuries. However, the genetic aspect of studies of this particular organism has always been neglected, mainly because of the nonavailability of suitable methods for isolation of nucleic acids and the difficulties faced ...
Lopes-Assad, Maria - - 2010
The fungus Aspergillus niger was cultivated in culture medium with an alkaline ultramafic rock powder to evaluate the solubilization of potassium for biofertilizer production. The assays were carried out with 2 strains (CCT4355 and CCT911) in small-scale batch fermentations using 125, 500, 1000, and 2000 mL Erlenmeyer flasks, with a ...
Beaudoin, Trevor - - 2010
Pseudomonas aeruginosa is an opportunistic pathogen that can form biofilms in the lungs and airways of cystic fibrosis (CF) patients, resulting in chronic endobronchial infection. Two clonal strains of P. aeruginosa, named type A and type B, have recently been identified and have been found to infect more than 20% ...
Ulloa, Juan - - 2010
Porcine astrovirus (PAstV) has been poorly studied and has been associated mainly with gastroenteritis. Computational analysis has revealed the close relationship of PAstV with astroviruses of humans (HAstV) and cats (FAstV). In this study, 105 and 171 stool specimens were collected from piglets and children under 5 years of age, ...
Sorger, George - - 2010
Sewage, a major source of bacterial contamination of the environment, can be an important health hazard. The presence of antibiotic-resistant bacteria in sewage can exacerbate this problem. The sources of antibiotic-resistant bacteria in sewage are, for this reason, worth identifying and addressing. The bacterial flora in the effluent of the ...
Yu, Yi-Gang - - 2010
A selective enrichment broth (SSL) was formulated to allow concurrent growth of 3 prominent food-borne pathogens: Salmonella enterica serovar Enteritidis, Staphylococcus aureus, and Listeria monocytogenes. Nalidixic acid, lithium chloride, and potassium tellurite were added as the selective agents, while sodium pyruvate and mannitol were employed as the supplemented elements. In ...
Sheng, Jiangyun - - 2010
Alkali production by oral streptococci is considered important for dental plaque ecology and caries moderation. Recently, malolactic fermentation (MLF) was identified as a major system for alkali production by oral streptococci, including Streptococcus mutans. Our major objectives in the work described in this paper were to further define the physiology ...
Hunter, Ryan - - 2010
Environmental growth conditions and cell physiology have the potential to influence bacterial surface-metal interactions in both planktonic and biofilm systems. Here, Pseudomonas aeruginosa was studied to determine the influence of these factors (pH, redox potential, and active respiration) on surface electrostatics and metal immobilization. Acid-base titrations revealed a decrease in ...
Bartuskova, Alena - - 2010
Regrowth of injured plants occurs from dormant meristems. Its success is known to be dependent on extrinsic factors, such as the severity of an injury and nutrient availability, although little is known about the effect of intrinsic factors. We conducted a growth-chamber experiment with the short-lived root-sprouting herb Rorippa palustris ...
Tsuneda, A. - - 2010
Cleistopycnidial ontogeny and sequences of nuclear internal transcribed spacers (ITS) and large subunits (LSU) were compared for five strains of Endoconidioma populi Tsuneda et al.: three from trembling aspen and two from alder. The cleistopycnidia of two of the aspen strains, including the type strain, were subglobose to flask-shaped (mostly ...
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