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https://www.readbyqxmd.com/read/28737427/the-effect-of-different-dietary-levels-of-dl-methionine-and-dl-methionine-hydroxy-analogue-on-the-antioxidant-and-immune-status-of-young-turkeys
#1
Zenon Zduńczyk, Jan Jankowski, Magdalena Kubińska, Katarzyna Ognik, Anna Czech, Jerzy Juśkiewicz
The hypothesis postulating that the antioxidant and immunological effects of dietary methionine (Met) in young turkeys (1-8 weeks of age) can be differentiated by level and source of Met was investigated in this study. A total of 544 female Hybrid Converter turkeys were divided into four groups and fed diets in which Met content was tailored through supplementation with dl-methionine (dl-Met) or dl-methionine hydroxy analogue (MHA) to levels recommended by NRC (1994) (Groups dl-MetL and MHAL) and exceeding them by 50% (Groups dl-MetH and MHAH)...
July 24, 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28736450/screening-survey-of-ocular-nasal-respiratory-and-skin-symptoms-in-manicurists-in-poland
#2
Marta Kieć-Świerczyńska, Dominika Świerczyńska-Machura, Dorota Chomiczewska-Skóra, Beata Kręcisz, Jolanta Walusiak-Skorupa
OBJECTIVES: Manicurists are exposed to various chemicals in nail and skin care products and may develop ocular, nasal, respiratory or skin adverse reactions to them. To investigate the occurrence of ocular, nasal, respiratory and skin problems among manicurists and to identify their causal factors, particularly allergic etiology and occupational origin. MATERIAL AND METHODS: Manicurists employed in beauty salons in the central region of Poland were invited to fill in the questionnaire and undergo medical examination, skin prick tests with common aeroallergens, patch tests with European Baseline Series and (Meth)Acrylates Series-Nails and spirometry...
July 12, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28735534/investigation-and-application-of-a-new-passive-sampling-technique-for-in-situ-monitoring-of-illicit-drugs-in-waste-waters-and-rivers
#3
Changsheng Guo, Tingting Zhang, Song Hou, Jiapei Lv, Yuan Zhang, Fengchang Wu, Zhendong Hua, Wei Meng, Hao Zhang, Jian Xu
Illicit drugs constitute a class of emerging contaminants that has been drawing significant concern due to its potent pharmacological and biological activities. In this study, an in situ passive sampling approach that uses diffusive gradients in thin films (DGT) was successfully tested for measuring ketamine (KET), methamphetamine (METH), and amphetamine (AMP) in water. The diffusion coefficients of KET, METH, and AMP in diffusive gel were (8.13±0.12)×10-6, (8.55±0.14)×10-6, and (7.72±0.18)×10-6 cm2 s-1 at 22 °C, respectively...
July 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28731367/methamphetamine-causes-photoreceptor-cell-damage-through-promoting-polarization-of-macrophages-and-inducing-inflammatory-response
#4
Aihui Zhang, Laiwei Wu, Zilin Chen, Guoqiang Huang, Xiaohe Lu
Classically activated macrophages (M1) are proinflammatory effectors and closely related to the progression of neurotoxicity. As a powerful psychostimulant and addictive drug, methamphetamine (Meth) abuse could result in long-lasting abnormalities in retina. This study investigated the effect of Meth at nontoxic concentration on macrophage activation state and its resultant toxicity to photoreceptor cells. Results showed that cytotoxicity was caused by Meth on 661 W cells after coculturing with RAW264.7 macrophage...
January 1, 2017: International Journal of Toxicology
https://www.readbyqxmd.com/read/28721538/-methamphetamine-epidemiology-clinical-importance-and-sequelae-of-abuse
#5
N Arnaud, T Thomasius
Methamphetamine (also known as meth and crystal meth) is a highly psychoactive synthetic amphetamine type stimulant, which falls under the German Federal Narcotics Law. The substance is similar to other stimulants but has distinct features with respect to psychoactive effects, clinical symptoms, user characteristics and short and long-term consequences including substance-induced problems and comorbidities. The consumption and misuse of crystal meth is still limited to certain regions in Germany; however, the substance causes significant clinical and public health concerns in the affected regions and beyond due to the associated high potential for misuse and dependence, neurotoxic and neurodegenerative effects as well as many other severe health risks...
July 18, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28715601/methamphetamine-increases-prion-protein-and-induces-dopamine-dependent-expression-of-protease-resistant-prpsc
#6
M Ferrucci, L Ryskalin, F Biagioni, S Gambardella, C L Busceti, A Falleni, G Lazzeri, F Fornai
The cellular prion protein (PrPc) is physiologically expressed within selective brain areas of mammals. Alterations in the secondary structure of this protein lead to scrapie-like prion protein (PrPsc), which precipitates in the cell. PrPsc has been detected in infectious, inherited or sporadic neurodegenerative disorders. Prion protein metabolism is dependent on autophagy and ubiquitin proteasome. Despite not being fully elucidated, the physiological role of prion protein relates to chaperones which rescue cells under stressful conditions...
July 1, 2017: Archives Italiennes de Biologie
https://www.readbyqxmd.com/read/28714720/the-behavioral-effects-of-chronic-sugar-and-or-caffeine-consumption-in-adult-and-adolescent-rats
#7
Jane L Franklin, Travis A Wearne, Judi Homewood, Jennifer L Cornish
Caffeine is a psychostimulant frequently consumed by adults and children, often in combination with high levels of sugar. Chronic pretreatment with either substance can amplify both amphetamine and cocaine-induced hyperactivity in rodents. The present study sought to elucidate whether age at the time of exposure to sugar and/or caffeine alters sensitivity to an acute illicit psychostimulant (methamphetamine, [METH]) challenge in adulthood. Adult and adolescent (Postnatal Day 35 on first day of treatment) male Sprague-Dawley rats were treated for 26 days with water, caffeine (0...
August 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28712749/nicotine-and-cocaine-triggered-methamphetamine-reinstatement-in-female-and-male-sprague-dawley-rats
#8
Steven T Pittenger, Shinnyi Chou, Scott T Barrett, Isabella Catalano, Maxwell Lydiatt, Rick A Bevins
Preclinical studies have demonstrated a return to methamphetamine (meth)-seeking behavior (reinstatement) induced by injections of meth administered by the experimenter (drug-prime). Notably, females tend to be more sensitive to drug-prime; often displaying more reinstatement behavior when compared to males. While meth-primed reinstatement of meth-seeking behavior has been established, little is known about the ability of other drugs of abuse to substitute for meth during drug-primed reinstatement; nicotine and cocaine were the focus of the present work...
July 13, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28712049/ginkgolide-b-suppresses-methamphetamine-induced-microglial-activation-through-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway-in-bv2-cells
#9
Fen Wan, Songsong Zang, Guoqing Yu, Hang Xiao, Jun Wang, Jinrong Tang
Accumulating evidence suggests that microglial cells have altered morphology and proliferation in different brain regions of methamphetamine (Meth) abusers and Meth-abusing animal models. However, the possible mechanisms underlying Meth-induced microglial activation remain poorly understood. Meanwhile, Toll-like receptor4 (TLR4) is closely associated with inflammation. Therefore the aim of the present study was to assess whether Meth treatment affects TLR4 expression; in addition, we evaluated the effects of ginkgolide B (GB), a diterpene lactone extracted from Ginkgo biloba, on Meth-mediated inflammation...
July 15, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28707389/methamphetamine-promotes-habitual-action-and-alters-the-density-of-striatal-glutamate-receptor-and-vesicular-proteins-in-dorsal-striatum
#10
Teri M Furlong, Laura H Corbit, Robert A Brown, Bernard W Balleine
Goal-directed actions are controlled by the value of the consequences they produce and so increase when what they produce is valuable and decrease when it is not. With continued invariant practice, however, goal-directed actions can become habits, controlled not by their consequences but by antecedent, reward-related states and stimuli. Here, we show that pre-exposure to methamphetamine (METH) caused abnormally rapid development of habitual control. Furthermore, these drug-induced habits differed strikingly from conventional habits; we found that they were insensitive both to changes in reward value and to the effects of negative feedback...
July 14, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28698151/the-effects-of-methamphetamine-and-buprenorphine-and-their-interaction-on-anxiety-like-behavior-and-locomotion-in-male-rats
#11
Farshid Etaee, Masoumeh Asadbegi, Zahra Taslimi, Siamak Shahidi, Abdolrahman Sarihi, Sara Soleimani Asl, Alireza Komaki
Methamphetamine (Meth) abuse and dependence are major global problems. Most of previous studies showed that Meth is anxiogenic. While buprenorphine (Bup) is used to treat anxiety-related behaviors, the effects of Meth in combination with Bup on anxiety-like behavior are unclear. In this study, we examined the effects of these drugs on anxiety-like behavior with the elevated plus maze (EPM) and open field (OF) tests, which are widely used to assess anxiety-like behavior in small rodents. Forty male Wistar rats were divided into four groups: sham, Meth, Bup, and Bup+Meth...
July 8, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28695221/core-shell-nano-latex-blending-method-to-prepare-multi-shape-memory-polymers
#12
Hongze Li, Yingwu Luo, Xiang Gao
Multi-shape memory polymers were prepared by blending a series of styrene (St)-block-(styrene-random-meth acrylate (MA))-block-styrene triblock copolymer nano-latexes. These latexes synthesized using a reversible addition-fragmentation chain transfer (RAFT) emulsion polymerization method have a core-shell structure. The cores are formed by the middle poly(St-random-MA) blocks. They act as transition phases with variable transition temperatures via adjusting the St/MA ratio. When the latexes are blended with an identical PSt shell but different poly(St-random-MA) cores, the shells play a role in preventing the aggregation of these poly(St-random-MA) cores forming a crosslinked network after hot-press treatment...
July 11, 2017: Soft Matter
https://www.readbyqxmd.com/read/28694771/nupr1-modulates-methamphetamine-induced-dopaminergic-neuronal-apoptosis-and-autophagy-through-chop-trib3-mediated-endoplasmic-reticulum-stress-signaling-pathway
#13
Xiang Xu, Enping Huang, Yunchun Tai, Xu Zhao, Xuebing Chen, Chuanxiang Chen, Rui Chen, Chao Liu, Zhoumeng Lin, Huijun Wang, Wei-Bing Xie
Methamphetamine (METH) is an illegal and widely abused psychoactive stimulant. METH exposure causes detrimental effects on multiple organ systems, primarily the nervous system, especially dopaminergic pathways, in both laboratory animals and humans. In this study, we hypothesized that Nuclear protein 1 (Nupr1/com1/p8) is involved in METH-induced neuronal apoptosis and autophagy through endoplasmic reticulum (ER) stress signaling pathway. To test this hypothesis, we measured the expression levels of Nupr1, ER stress protein markers CHOP and Trib3, apoptosis-related protein markers cleaved-caspase3 and PARP, as well as autophagy-related protein markers LC3 and Beclin-1 in brain tissues of adult male Sprague-Dawley (SD) rats, rat primary cultured neurons and the rat adrenal pheochromocytoma cells (PC12 cells) after METH exposure...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28690968/miniemulsion-copolymerization-of-meth-acrylates-in-the-presence-of-functionalized-multiwalled-carbon-nanotubes-for-reinforced-coating-applications
#14
Bertha T Pérez-Martínez, Lorena Farías-Cepeda, Víctor M Ovando-Medina, José M Asua, Lucero Rosales-Marines, Radmila Tomovska
Film forming, stable hybrid latexes made of methyl metacrylate (MMA), butyl acrylate (BA) and 2-hydroxyethyl methacrylate (HEMA) copolymer reinforced with modified multiwalled carbon nanotubes (MWCNTs) were synthesized by in situ miniemulsion polymerization. The MWCNTs were pretreated by an air sonication process and stabilized by polyvinylpyrrolidone. The presence of the MWCNTs had no significant effect on the polymerization kinetics, but strongly affected the polymer characteristics (Tg and insoluble polymer fraction)...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28689763/remodeling-of-brain-lipidome-in-methamphetamine-sensitized-mice
#15
Linhong Jiang, Hui Gu, Yiyun Lin, Wei Xu, Ruiming Zhu, Jueying Kong, Li Luo, Hailei Long, Bing Liu, Bo Chen, Yinglan Zhao, Xiaobo Cen
Lipids are predominant components of the brain and key regulators for neural structure and function. The effect of methamphetamine (METH) on behavior, cognition as well as memory has been intensively investigated; however, the impact of METH on brain lipid profiles is largely unknown. Here, we used a global lipidomic approach to investigate brain lipidome of METH-sensitized mice. We found that repeated METH significantly modified the lipidome in the hippocampus, prefrontal cortex (PFC) and striatum. Interestingly, nucleus accumbens showed no obvious alteration in lipidomic profiling...
July 6, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28686721/systemic-pd149163-a-neurotensin-receptor-1-agonist-decreases-methamphetamine-self-administration-in-dba-2j-mice-without-causing-excessive-sedation
#16
Amanda L Sharpe, Erika Varela, Michael J Beckstead
Methamphetamine (METH) is a psychostimulant that exhibits significant abuse potential. Although METH addiction is a major health and societal concern, no drug is currently approved for its therapeutic management. METH activates the central dopaminergic "reward" circuitry, and with repeated use increases levels of the neuromodulatory peptide neurotensin in the nucleus accumbens and ventral tegmental area. Previous studies in rats suggest that neurotensin agonism decreases METH self-administration, but these studies did not examine the effect of neurotensin agonism on the pattern of self-administration or open field locomotion...
2017: PloS One
https://www.readbyqxmd.com/read/28681200/microrna-expression-signature-of-methamphetamine-use-and-addiction-in-the-rat-nucleus-accumbens
#17
Maw Shin Sim, Tomoko Soga, Vijayapandi Pandy, Yuan Seng Wu, Ishwar S Parhar, Zahurin Mohamed
Methamphetamine (METH) is a highly addictive psycho-stimulant that induces behavioral changes due to high level of METH-induced dopamine in the brain. Nucleus accumbens (NAc) plays an important role in these changes, especially in drug addiction. However, little is known about the underlying molecular mechanisms of METH-induced addiction. The objective of this study was to establish a behavioral model of METH use and addiction using escalating doses of METH over 15 days and to determine the global miRNA expression profiling in NAc of METH-addicted rats...
July 5, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28676882/dermoscopy-digital-dermoscopy-and-other-diagnostic-tools-in-the-early-detection-of-melanoma-and-follow-up-of-high-risk-skin-cancer-patients
#18
Luc Thomas, Susana Puig
Early detection is a key strategy for reducing the mortality and economic burden associated with melanoma. Dermoscopy is a non-invasive and cost-effective tool for melanoma diagnosis, which has been shown to be a reliable and sensitive method for detecting early-stage skin cancer and reducing the number of unnecessary excisions. Patients at high risk of developing melanoma require long-term surveillance. Use of digital dermoscopy follow-up of these patients has led to improved outcomes. Combined follow-up programmes using total-body photography and digital dermoscopy have led to further improvements in early diagnosis and diagnostic accuracy...
July 5, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28661609/-estimation-of-bilio-oigestive-and-interintestinal-anastomoses-formed-in-accordance-to-method-of-a-high-frequency-electric-welding-of-tissues-in-experiment
#19
A I Hutsuliak
In the experiment on 50 rabbits cholecysto-entero and entero-entero anastomoses were formed on intestinal Roux loop. In 35 animals (the main group) a single layer evert- ing anastomoses by using high frequence (HF) electric welding method were formed, in 15 (the comparison group) single row suture anastomoses has been done. The anas- tomosis sufficiency were performed by using hydropressure, pneumopressure meth- ods and breakload test. It was established that all anastomoses formed by HF-electric welding method were passable and hermetic, also had strong sufficiency...
August 2016: Klinichna Khirurhiia
https://www.readbyqxmd.com/read/28661099/self-administration-of-methamphetamine-alters-gut-biomarkers-of-toxicity
#20
Amanda Flack, Amanda L Persons, Sharanya M Kousik, T Celeste Napier, Anna Moszczynska
Methamphetamine (METH) is a highly abused psychostimulant that is associated with an increased risk for developing Parkinson's disease (PD). This enhanced vulnerability likely relates to the toxic effects of METH that overlap with PD pathology, e.g., aberrant functioning of α-synuclein and parkin. In PD, peripheral factors are thought to contribute to central nervous system (CNS) degeneration. For example, α-synuclein levels in the enteric nervous system (ENS) are elevated, and this precedes the onset of motor symptoms...
June 29, 2017: European Journal of Neuroscience
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