Articles Related to Stress

Background to Study: Lead (Pb) is ubiquitous in the environment and toxic. It has many negative effects on many organs and induces biochemical, physiological, and behavioural alterations on the brain. Monodora myristica is a calabash nutmeg belonging to the family of Annonaceae.It is a rich source of flavonoids which have been shown to exhibit both antioxi-dant and anti-inflammatory properties. We evaluated the protective role of Monodora myristica on lead-induced toxicity in D. melanogaster in this study

View complete article: PDF  |  Full-text

Grapes (Vitis vinifera L.) are among the most commonly cultivated horticultural crops on the earth covering an area of 7.5 million hectares with around 70 million tons production. Grapes being highly nutritious are majorly utilized in making beverages or used as fresh and raisin. In today’s world, the most concerned topic in agriculture is continuous change in climatic conditions leading to several negative social, ecological, economical and biological problems. Grapes are delicate fruits, their vines are sensitive towards extremes in temperature, water, heat, duration and intensity of light exposure as well as carbon dioxide and humidity alterations. Hence, one can shift to drought and heat tolerant varieties and certain training and pruning methods suitable to the prevailing environmental conditions. Vineyard management practices, including farm mechanization can be amended for improving the gains, while reducing the input

View complete article: PDF  |  Full-text

The vibrations of carbon nanotubes under the influences of various internal and external forces have been subjects of interests for some years. These researches have not really considered the effects of surface energy and initial stress which are very important from both material and mechanical aspects of views. Therefore, the current study presents the simultaneous impacts of surface energy, initial stress and nonlocality and other various parameters on the nonlinear vibration of carbon nanotube hot fluid-conveying resting on elastic foundations in a magnetic environment. The derived equations governing the behaviours are solved using Galerkin’s decomposition-Adomian decomposition method is adopted to explore the concurrent impacts of surface elasticity, initial stress, residual surface tension and nonlocality on the nonlinear vibration of singlewalled carbon conveying nanotube resting on linear and nonlinear elastic foundation and operating in a thermo-magnetic environment

View complete article: PDF  |  Full-text

Stress of the endoplasmic reticulum (ER) is induced by the accumulation of misfolded proteins in this organelle. It can be triggered by biotic and abiotic stress (particularly heat), but also by chemical treatments (such as DTT and tunicamycin) at a laboratory scale. To respond to this stress, various cellular mechanisms are involved, including the highly conserved protein repair pathway, the UPR (Unfolded Protein Response). This pathway aims to restore protein homeostasis in cells. In cereals, seed storage proteins (SSP) represent one of the characteristics that determine grain quality and are of great interest to agriculture. Unlike dicots, the dynamics of the UPR induction pathway in monocots are poorly documented in the literature.

View complete article: PDF  |  Full-text

The purpose of this study was to clarify the response of Ningxiang pig against pathogenic enterotoxigenic Escherichia coli (ETEC) during the weaning period. Sixteen weaned Ningxiang pigs, were selected from one litter at 28 days and randomly allocated into two groups, with or without oral administration of ETEC (109 colony forming units/piglet/d) for two consecutive days. Blood and intestinal samples were collected after sacrifice to investigate the influence for systemic and gastrointestinal tract influences

View complete article: PDF  |  Full-text

Low temperature (but above-freezing) during germination and early seedling growth of chilling-sensitive crop is one of the most significant limiting factors in the productivity. 2,4-Epibrassinolide (24-EB) is one of the most active forms of brassinosteroids are multifunctional plant hormones that can regulate development and respond to abiotic stresses. The effect of seed-pretreatment with 24-EB (12.5 μg/L) on photosynthetic characteristics, membrane permeability, lipid peroxidation and antioxidant activities under chilling stress were investigated in tomato (Lycopersicon esculentum Mill.) cultivars: Kulon (early ripening) and Yakhont (mid-early). Results showed that the use of 24-EB led to more pronounced changes in the pigment composition in Yakhont in the absence of a stress factor, whereas in Kulon under chilling stress (2 o C for 24 h). 24-EB pretreatment minimized the damage to cell membranes in tomato plants caused by chilling stress. The tolerance to chilling stress in Yakhont was higher than Kulon (by electrolyte leakage and content of malondialdehyde assay). Under these conditions, oxidative processes in plants of Yakhont did not show significant difference. We have not established the effect of 24-EB on the level of low molecular weight antioxidants in tomato cultivars (measured by inhibition of 2,2-diphenyl-1-picrylhydrazyl free radical method). The antioxidant activity of leaf extracts in Yakhont was twice as high as in Kulon under all experimental conditions (with/without 24-EB, 22/2 o C). It was concluded that the less pronounced reaction of plants of Yakhont to the use of 24-EB and chilling stress is due to their genetically determined higher cold resistance than that of Kulon.

View complete article: PDF  |  Full-text

Despite extensive research, the incidence of diabetes continues to increase, and the management of diabetes needs improvement, because in 2016, more than 100,000 patients had lower extremity amputated, suffered ischemic heart disease and stroke. Analysis of investigations indicates that increased oxidative stress and chronic inflammation enhance the risk, progression, diabetic–related complications, and reduce effectiveness of drug therapy. Therefore, simultaneously attenuation of these cellular abnormalities may help in reducing the risk of development, progression, and prolonging the effectiveness of drug therapy.

View complete article: PDF  |  Full-text

Based on the linear three-dimensional elastic theory, shear horizontal (SH) wave propagation along the normal direction to the piezoelectric semiconductor plate (PSC) was obtained in the presence of initial horizontal and vertical stresses. The purpose behind obtaining the numerical solutions was to evaluate the effect of stress on dimensionless frequency and phase velocity.

View complete article: PDF  |  Full-text

Opioids are commonly prescribed for acute pain management. Complications such as nausea, vomiting, itch and constipation are not uncommon. Two unusual and unexpected complications that can arise in the acute setting are opioid-induced hyperalgesia (OIH) and acute opioid tolerance (AOT). The diagnostic challenges of these two entities are mainly attributed to their unpredictable onset and lack of strict diagnostic criteria. In the pediatric setting, additional confounding factors such as separation anxiety, hunger, thirst and poor verbal communication further complicate discerning between the two phenomena.

View complete article: PDF  |  Full-text

It was a cross-sectional study including 434 apparently healthy subjects (194 males) divided into two groups: i) obese (BMI ≥ 30 Kg/m²) and ii) non-obese (BMI < 30 Kg/m²). Exclusion criteria were: current smokers, asthma, medicine intake interfering with FeNO levels, and abnormal lung function tests. The FeNO measurements were performed before spirometry. Student t test was performed to compare between the two groups. The Spearman correlation between BMI and FeNO levels was evaluated. The Piecewise linear regression with breakpoint was assessed to define the breakpoint of inflammation related to obesity.

View complete article: PDF  |  Full-text

It has a great significance to establish a high repetitive and special system to evaluate locomotion for tree shrew animal models, especially neuropsychiatric models. Thus, we designed a special open field test appliance for tree shrews by using a polymer PMMA board (plexiglass). The locomotion of naïve tree shrews was detected twice in it. By using Any-maze Software tracing the motion trajectory, we found that the motion trajectory and the distance were very similar in both tests. It demonstrated that the appliance designed for tree shrews had extremely high reliability and stability.

View complete article: PDF  |  Full-text

Difference of ability of breed/animal at tolerance of heat stress, the HSP70 effective is one of the major as a cellular thermometer in response to heat stress.

View complete article: PDF  |  Full-text

The study was aimed to evaluate the antioxidant and antiaging potential of Biofield Energy Healing Treatment (the Trivedi Effect®) on a novel test formulation in in vitro. The test formulation was divided into two parts

View complete article: PDF  |  Full-text

A growing body of evidence gathered over the past 10 years has demonstrated a clear escalation of sudden death (SD) in Chinese medical staff. This retrospective study was conceived to explore the first evidence of signs of SD, relieving clinical workload and strengthening protection against the overload of Chinese medical staff.

View complete article: PDF  |  Full-text

Obesity is a multisystemic disease. It is a coronary risk factor, that promotes or is associated with other components such as hypertension, diabetes, dyslipidemia, etc.

View complete article: PDF  |  Full-text