135 research outputs found
The effects of swimming exercise and supraphysiological doses of nandrolone decanoate on the testis in adult male rats: a transmission electron microscope study
Anabolic-androgenic steroids (AAS) are used in high doses by athletes to improve
athletic ability, physical appearance, and muscle mass. Unfortunately,
the abuse of these agents has significantly increased. It has been established
that exercise and high doses of AAS may influence the hypothalamic-pituitary
gonadal (H-P-G) axis, which can in turn affect the ultrastructure of the testes.
However, the effect of the combination of exercise and high doses of AAS on
the ultrastructure of the testes is not known. This study was undertaken in
order to examine the combination effects of swimming exercise and supraphysiological
doses of nandrolone decanoate on the ultrastructural changes in
rat testes. Five groups of male Wistar strain albino rats were treated as follows
for 8 weeks: solvent of nandrolone decanoate (peanut oil) as a vehicle (sham);
nandrolone decanoate (ND) (10 mg/kg/week) - ND; exercise (1 h/day, 5 days
a week) - exercise; ND (10 mg/kg/week) and exercise (1 h/day, 5 days a week)
- ND-EX; and sedentary control without any injection or exercise - control.
Ultrastructural changes in the rat testes were characterised by transmission
electron microscopy. The number and size of Leydig cells were considerably
decreased in the interstitial space in the experimental rats. The increased thickness
and irregular wavy multilaminar appearance of basement membrane in
the treated animals, especially in the ND-EX group, are associated with well
developed myoid cells. Cytoplasm vacuolisation, vesicular-like crista of the mitochondria,
numerous lipid droplets, and lysosome and phagolysosome in Sertoli
cells were significantly observed in the experimental groups. Several apoptotic
germ cells were considerably observed in the experimental rats (p ≤ 0.05).
Exercise training seems to increase the extent of ultrastructural changes caused
by supraphysiological doses of ND in rats, which in turn may affect fertility.
(Folia Morphol 2010; 69, 3: 138-146
Search for composite and exotic fermions at LEP 2
A search for unstable heavy fermions with the DELPHI detector at LEP is
reported. Sequential and non-canonical leptons, as well as excited leptons and
quarks, are considered. The data analysed correspond to an integrated
luminosity of about 48 pb^{-1} at an e^+e^- centre-of-mass energy of 183 GeV
and about 20 pb^{-1} equally shared between the centre-of-mass energies of 172
GeV and 161 GeV. The search for pair-produced new leptons establishes 95%
confidence level mass limits in the region between 70 GeV/c^2 and 90 GeV/c^2,
depending on the channel. The search for singly produced excited leptons and
quarks establishes upper limits on the ratio of the coupling of the excited
fermio
Search for lightest neutralino and stau pair production in light gravitino scenarios with stau NLSP
Promptly decaying lightest neutralinos and long-lived staus are searched for
in the context of light gravitino scenarios. It is assumed that the stau is the
next to lightest supersymmetric particle (NLSP) and that the lightest
neutralino is the next to NLSP (NNLSP). Data collected with the Delphi detector
at centre-of-mass energies from 161 to 183 \GeV are analysed. No evidence of
the production of these particles is found. Hence, lower mass limits for both
kinds of particles are set at 95% C.L.. The mass of gaugino-like neutralinos is
found to be greater than 71.5 GeV/c^2. In the search for long-lived stau,
masses less than 70.0 to 77.5 \GeVcc are excluded for gravitino masses from 10
to 150 \eVcc . Combining this search with the searches for stable heavy leptons
and Minimal Supersymmetric Standard Model staus a lower limit of 68.5 \GeVcc
may be set for the stau mas
An analysis of material consumption culture in the Muslim world
In this paper, we examine the notion of material consumption culture in Islamic societies. We differentiate between institutionalised religion and religion as culture. We contest the Orientalist portrayal of Islam as a fanatic ideology opposed to Western Modernity’s features of secularism, individualism, and pluralism. With reference to the Qur’anic text, we discuss that such qualities are embedded with Islam. We do not interpret the Qur’an from a theological perspective; rather, we seek to demonstrate the possibilities of its multiple interpretations. We argue that, in their everyday life consumption practices, Muslims (re)interpret religious guidelines in different ways and refer to Islam, as a transcendental set of guidelines, to make better sense of their cultural practices in different ways. We summarise our discussion by highlighting the importance of analysing the culture of consumption from the lens of insiders and offer directions for future research
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Advanced imaging use in intensive care units has decreased, resulting in lower charges without negative effects on patient outcomes
There has been both greater recognition and scrutiny of the increased use of advanced imaging. Our aim was to determine whether there has been a change over time in the use of computed tomography (CT), magnetic resonance imaging (MRI), ultrasound (US) modalities in the intensive care units (ICUs).
A retrospective review of 75657 admissions to 20 ICUs was conducted. Results were analyzed with multivariate linear, negative binomial, and Poisson regressions. Primary outcomes were rates of use of CT, MRI, and US per 1000 ICU admissions every 6 months. Secondary outcomes were changes in radiology use associated with impacts on mortality, hospital length of stay (LOS), ICU LOS, and hospital charges.
The rate of imaging use decreased by 13.5% between 2007 and 2011 (incidence rate ratio [IRR], 0.982; P < .001). Most of this decrease was by CTs (21.0%; IRR, 0.973; P < .001). Use of MRI decreased by 6.0% (IRR, 0.991; P = .04), whereas US increased by 18.9% (IRR, 1.012; P < .001). The charges associated with imaging decreased by 1.2 million in charges during 2011. Decreased imaging was not associated with changes in mortality, hospital, and ICU LOS.
Advanced imaging use decreased for 5 years in the ICUs, resulting in decreased charges without negative effects on patient outcomes
Advanced imaging use in intensive care units has decreased, resulting in lower charges without negative effects on patient outcomes
There has been both greater recognition and scrutiny of the increased use of advanced imaging. Our aim was to determine whether there has been a change over time in the use of computed tomography (CT), magnetic resonance imaging (MRI), ultrasound (US) modalities in the intensive care units (ICUs).
A retrospective review of 75657 admissions to 20 ICUs was conducted. Results were analyzed with multivariate linear, negative binomial, and Poisson regressions. Primary outcomes were rates of use of CT, MRI, and US per 1000 ICU admissions every 6 months. Secondary outcomes were changes in radiology use associated with impacts on mortality, hospital length of stay (LOS), ICU LOS, and hospital charges.
The rate of imaging use decreased by 13.5% between 2007 and 2011 (incidence rate ratio [IRR], 0.982; P < .001). Most of this decrease was by CTs (21.0%; IRR, 0.973; P < .001). Use of MRI decreased by 6.0% (IRR, 0.991; P = .04), whereas US increased by 18.9% (IRR, 1.012; P < .001). The charges associated with imaging decreased by 1.2 million in charges during 2011. Decreased imaging was not associated with changes in mortality, hospital, and ICU LOS.
Advanced imaging use decreased for 5 years in the ICUs, resulting in decreased charges without negative effects on patient outcomes
Neuroscience20 (BRAIN20, SPINE20, and MENTAL20) Health Initiative: A Global Consortium Addressing the Human and Economic Burden of Brain, Spine, and Mental Disorders through Neurotech Innovations and Policies
Neurological disorders significantly impact the world's economy due to their often chronic and life-threatening nature afflicting individuals which, in turn, creates a global disease burden. The Group of Twenty (G20) member nations, which represent the largest economies globally, should come together to formulate a plan on how to overcome this burden. The Neuroscience-20 (N20) initiative of the Society for Brain Mapping and Therapeutics (SBMT) is at the vanguard of this global collaboration to comprehensively raise awareness about brain, spine, and mental disorders worldwide. This paper aims to provide a comprehensive review of the various brain initiatives worldwide and highlight the need for cooperation and recommend ways to bring down costs associated with the discovery and treatment of neurological disorders. Our systematic search revealed that the cost of neurological and psychiatric disorders to the world economy by 2030 is roughly 1.5T annually and growing given the impact of COVID-19. We also discovered there is a shortfall of effective collaboration between nations and a lack of resources in developing countries. Current statistical analyses on the cost of neurological disorders to the world economy strongly suggest that there is a great need for investment in neurotechnology and innovation or fast-tracking therapeutics and diagnostics to curb these costs. During the current COVID-19 pandemic, SBMT, through this paper, intends to showcase the importance of worldwide collaborations to reduce the population's economic and health burden, specifically regarding neurological/brain, spine, and mental disorders. © 2021 - IOS Press. All rights reserved
Heterotopic ossification after total hip arthroplasty (THA) in congenital hip disease: comparison of two different prophylactic protocols
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