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https://www.readbyqxmd.com/read/28936190/oxytocin-and-opioid-receptor-gene-polymorphisms-associated-with-greeting-behavior-in-dogs
#1
Enikő Kubinyi, Melinda Bence, Dora Koller, Michele Wan, Eniko Pergel, Zsolt Ronai, Maria Sasvari-Szekely, Ádám Miklósi
Meeting humans is an everyday experience for most companion dogs, and their behavior in these situations and its genetic background is of major interest. Previous research in our laboratory reported that in German shepherd dogs the lack of G allele, and in Border collies the lack of A allele, of the oxytocin receptor gene (OXTR) 19208A/G single nucleotide polymorphism (SNP) was linked to increased friendliness, which suggests that although broad traits are affected by genetic variability, the specific links between alleles and behavioral variables might be breed-specific...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28884566/effects-on-cognitive-function-of-propofol-medium-and-long-chain-lipid-emulsion-in-patients-with-hepatic-encephalopathy
#2
Shenghui Yu, Jianlei Hu, Li Ding, Da Yu
BACKGROUND: Our study aimed to investigate the effects of propofol medium and long chain lipid emulsion on cognitive function of the patients with hepatic encephalopathy undergoing hemofiltration treatment. METHODS: A total of 87 patients diagnosed with hepatic encephalopathy from January 2014 to January 2016 were continuously selected, and randomly (Using Random number method) divided into an observation group (45 cases) and a control group (42 cases). All patients were treated with persistent hemofiltration; the patients in control group were not given any sedative measures, while the patients in observation group were given a propofol medium-long chain lipid emulsion injection with a dose determined by each individual's degree of restlessness and tolerance to hemofiltration (Intravenous injection was performed with the first dose of 100mg, and then patients are subjected to micro-infusion pump with a dose of 0...
September 7, 2017: Panminerva Medica
https://www.readbyqxmd.com/read/28834870/diagnostic-value-of-brain-natriuretic-peptide-and-%C3%AE-endorphin-plasma-concentration-changes-in-patients-with-acute-left-heart-failure-and-atrial-fibrillation
#3
Shao-Dan Feng, Yong Jiang, Zhi-Hong Lin, Pei-Hong Lin, Si-Ming Lin, Qi-Cai Liu
RATIONALE: This study aims to evaluate the diagnostic value of beta-endorphin (β-EP) and brain natriuretic peptid (BNP) plasma concentrations for the early diagnosis of acute left heart failure and atrial fibrillation. PATIENT CONCERNS: A total of 45 patients were included. These patients comprised 23 male and 22 female patients,and 20 healthy subjects who underwent physical examinations in the Outpatient Department during the same periodwere included and assigned to the control group...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28826978/a-review-of-the-physiological-effects-and-mechanisms-of-singing
#4
REVIEW
Jing Kang, Austin Scholp, Jack J Jiang
Daily experience suggests that singing can energize us and even provide a physical workout. A growing amount of evidence has been presented to support anecdotal claims of the benefits of singing on health and well-being. Singing has been shown to be related to numerous physiological changes. The cardiorespiratory system is utilized during persistent singing training, resulting in enhanced respiratory muscles and an optimized breathing mode. In addition, singing can also cause changes in neurotransmitters and hormones, including the upregulation of oxytocin, immunoglobulin A, and endorphins, which improves immune function and increases feelings of happiness...
August 18, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28821664/differential-desensitization-observed-at-multiple-effectors-of-somatic-%C3%AE-opioid-receptors-underlies-sustained-agonist-mediated-inhibition-of-proopiomelanocortin-neuron-activity
#5
Philip D Fox, Shane T Hentges
Activation of somatic μ-opioid receptors (MORs) in hypothalamic proopiomelanocortin (POMC) neurons leads to the activation of G-protein-coupled inward rectifier potassium (GIRK) channels and hyperpolarization, but in response to continued signaling MORs undergo acute desensitization resulting in robust reduction in the peak GIRK current after minutes of agonist exposure. We hypothesized that the attenuation of the GIRK current would lead to a recovery of neuronal excitability whereby desensitization of the receptor would lead to a new steady state of POMC neuron activity reflecting the sustained GIRK current observed after the initial decline from peak with continued agonist exposure...
September 6, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28766982/serum-met-5-enkephalin-levels-are-reduced-in-multiple-sclerosis-and-restored-by-low-dose-naltrexone
#6
Michael D Ludwig, Ian S Zagon, Patricia J McLaughlin
Low-dose naltrexone is a widely used off-label therapeutic prescribed for a variety of immune-related disorders. The mechanism underlying low-dose naltrexone's efficacy for fatigue, Crohn's disease, fibromyalgia, and multiple sclerosis is, in part, intermittent blockade of opioid receptors followed by upregulation of endogenous opioids. Short, intermittent blockade by naltrexone specifically blocks the opioid growth factor receptor resulting in biofeedback events that increase production of the endogenous opioid growth factor (OGF) (chemically termed [Met(5)]-enkephalin) facilitating interactions between opioid growth factor and opioid growth factor receptor that ultimately, result in inhibited cell proliferation...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28761205/pain-relief-with-wet-cupping-therapy-in-rats-is-mediated-by-heat-shock-protein-70-and-%C3%A3-endorphin
#7
Imam Subadi, Boya Nugraha, Hening Laswati, Harjanto Josomuljono
BACKGROUND: Wet cupping therapy is a complementary therapy in pain management. The mechanism of this therapy, however, needs further elucidation. Cells injured by wet cupping therapy seem to stimulate the expression of heat shock protein 70 (HSP70). Its benefit in pain reduction could be mediated by the expression of ß-endorphin. This study aimed at determining the correlation between HSP70 and ß-endorphin after wet cupping therapy. METHODS: Sixteen male Wistar rats were divided into control (CG; n=8) and treatment (TG; n=8) groups...
July 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28716934/sigma-1-receptors-control-immune-driven-peripheral-opioid-analgesia-during-inflammation-in-mice
#8
Miguel A Tejada, Angeles Montilla-García, Shane J Cronin, Domagoj Cikes, Cristina Sánchez-Fernández, Rafael González-Cano, M Carmen Ruiz-Cantero, Josef M Penninger, José M Vela, José M Baeyens, Enrique J Cobos
Sigma-1 antagonism potentiates the antinociceptive effects of opioid drugs, so sigma-1 receptors constitute a biological brake to opioid drug-induced analgesia. The pathophysiological role of this process is unknown. We aimed to investigate whether sigma-1 antagonism reduces inflammatory pain through the disinhibition of the endogenous opioidergic system in mice. The selective sigma-1 antagonists BD-1063 and S1RA abolished mechanical and thermal hyperalgesia in mice with carrageenan-induced acute (3 h) inflammation...
August 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28690569/the-effect-of-different-phases-of-synchrony-on-pain-threshold-in-a-drumming-task
#9
Philip Sullivan, Mishka Blacker
Behavioral synchrony has been linked to endorphin activity (Cohen et al., 2010; Sullivan and Rickers, 2013; Sullivan et al., 2014; Tarr et al., 2015, 2016; Weinstein et al., 2016). This has been called the synchrony effect. Synchrony has two dominant phases of movement; in-phase and anti-phase. The majority of research investigating synchrony's effect on endorphin activity has focused on in-phase synchrony following vigorous activities. The only research to investigate the effects of anti-phase synchrony on endorphin activity found that anti-phase synchronized rowing did not produce the synchrony effect (Sullivan et al...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28687197/opioid-receptor-activation-is-involved-in-neuroprotection-induced-by-trpv1-channel-activation-against-excitotoxicity-in-the-rat-retina
#10
Kenji Sakamoto, Taiyo Kuroki, Tomonori Sagawa, Hiroko Ito, Asami Mori, Tsutomu Nakahara, Kunio Ishii
Recently, we reported that capsaicin, a transient receptor potential vanilloid type1 (TRPV1) agonist, protected against excitotoxicity induced by intravitreal N-methyl-D-aspartic acid (NMDA) in the rats in vivo. It has been reported that morphine, an opioid receptor agonist, ameliorated excitotoxicity induced by ischemia-reperfusion in the retina, and that capsaicin-induced neuroprotection was reduced by naloxone, an opioid receptor antagonist in the brain. The aim of the present study is to clarify whether activation of opioid receptors is involved in the capsaicin-induced neuroprotection in the retina...
July 4, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28684258/effects-of-transcranial-direct-current-stimulation-on-pain-mood-and-serum-endorphin-level-in-the-treatment-of-fibromyalgia-a-double-blinded-randomized-clinical-trial
#11
Eman M Khedr, Eman A H Omran, Nadia M Ismail, Dina H El-Hammady, Samar H Goma, Hassan Kotb, Hannan Galal, Ayman M Osman, Hannan S M Farghaly, Ahmed A Karim, Gehad A Ahmed
BACKGROUND: Recent studies have shown that novel neuro-modulating techniques can have pain-relieving effects in the treatment of chronic pain. The aim of this work is to evaluate the effects of transcranial direct current stimulation (tDCS) in relieving fibromyalgia pain and its relation with beta-endorphin changes. MATERIAL AND METHODS: Forty eligible patients with primary fibromyalgia were randomized to receive real anodal tDCS or sham tDCS of the left motor cortex (M1) daily for 10 days...
June 23, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28675777/effects-of-myricetin-containing-ethanol-solution-on-high-fat-diet-induced-obese-rats
#12
Hsueh-Chin Chao, Pei-Feng Tsai, Sheng-Chi Lee, Yeong-Shenn Lin, Ming-Chang Wu
Myricetin is a natural flavonol widely occurring in wines. Many beneficial effects of myricetin in alcoholic beverages have been reported before, but never including anti-obesity. In the present study, we fed obese male Sprague-Dawley rats with ethanol solutions containing various concentrations of myricetin and found that myricetin may maintain the food intake while reduce the weight-gain, feed efficiency, level of blood lipids, adipocyte size, and weight and size of the perirenal and epididymal adipose tissues (P < 0...
July 4, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28665324/diosmin-a-citrus-nutrient-activates-imidazoline-receptors-to-alleviate-blood-glucose-and-lipids-in-type-1-like-diabetic-rats
#13
Chia-Chen Hsu, Mang Hung Lin, Juei-Tang Cheng, Ming Chang Wu
Diosmin is a nutrient that is widely contained in citrus and that has been indicated to improve glucose metabolism in diabetic disorders. Recently, we demonstrated that diosmin induces β-endorphin to lower hyperglycemia in diabetic rats. However, the mechanisms of diosmin in opioid secretion were unclear. Therefore, we focused on the secretion of opioids from isolated adrenal glands induced by diosmin. The changes in the released β-endorphin-like immunoreactivity (BER) were determined using ELISA. Diosmin increased the BER level in a dose-dependent manner, and this effect was markedly reduced in the absence of calcium ions...
June 30, 2017: Nutrients
https://www.readbyqxmd.com/read/28663110/sucrose-and-naltrexone-prevent-increased-pain-sensitivity-and-impaired-long-term-memory-induced-by-repetitive-neonatal-noxious-stimulation-role-of-bdnf-and-%C3%AE-endorphin
#14
Khawla Q Nuseir, Karem H Alzoubi, Ahmed Alhusban, Areej Bawaane, Mohammed Al-Azzani, Omar F Khabour
Pain in neonates is associated with short and long-term adverse outcomes. Data demonstrated that long-term consequences of untreated pain are linked to the plasticity of the neonate's brain. Sucrose is effective and safe for reducing painful procedures from single events. However, the mechanism of sucrose-induced analgesia is not fully understood. The role of the opioid system in this analgesia using the opioid receptor antagonist Naltrexone was investigated, plus the long-term effects on learning and memory formation during adulthood...
June 27, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28657424/heroin-piracetam-mixture-suggested-mechanisms-of-action-and-risks-of-misinterpretation-for-drug-users
#15
Simone Cappelletti, Francesco Lombardo, Pasquale Vitale, Giuseppe Vallone, Costantino Ciallella
Piracetam is a positive allosteric modulator of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor that has been frequently used in the treatment of cognitive disorders. Press and internet reports indicate that the use of piracetam, as a heroin adulterant, has spread rapidly in some countries, especially in Asia and Europe. Its use, as adulterant, is believed to produce more profound desirable effects, while decreasing hangover. Recent surveys demonstrated that piracetam protects neurons from heroin-induced apoptosis...
January 1, 2017: Medico-legal Journal
https://www.readbyqxmd.com/read/28642689/integrating-neural-circuits-controlling-female-sexual-behavior
#16
REVIEW
Paul E Micevych, Robert L Meisel
The hypothalamus is most often associated with innate behaviors such as is hunger, thirst and sex. While the expression of these behaviors important for survival of the individual or the species is nested within the hypothalamus, the desire (i.e., motivation) for them is centered within the mesolimbic reward circuitry. In this review, we will use female sexual behavior as a model to examine the interaction of these circuits. We will examine the evidence for a hypothalamic circuit that regulates consummatory aspects of reproductive behavior, i...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28638432/mechanical-stimulation-of-the-ht7-acupuncture-point-to-reduce-ethanol-self-administration-in-rats
#17
Suk-Yun Kang, O Sang Kwon, Ji-Young Moon, Seong Jin Cho, Kwang-Ho Choi, Junbeom Kim, Seong-Hun Ahn, Yeonhee Ryu
BACKGROUND: Alcoholism, which is a disabling addiction disorder, is a major public health problem worldwide. The present study was designed to determine whether the application of acupuncture at the Shenmen (HT7) point suppresses voluntary alcohol consumption in addicted rats and whether this suppressive effect is potentiated by the administration of naltrexone. METHODS: Rats were initially trained to self-administer a sucrose solution by operating a lever. A mechanical acupuncture instrument (MAI) for objective mechanical stimulation was used on rats whose baseline response had been determined...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28630099/kndy-neurone-activation-prior-to-the-lh-surge-of-the-ewe-is-disrupted-by-lps
#18
Chrysanthi Fergani, Jean Routly, David Jones, Lucy Pickavance, Robert Frank Smith, Hilary Dobson
In the ewe, steroid hormones act on the hypothalamic arcuate nucleus (ARC) to initiate the GnRH/LH surge. Within the ARC, steroid signal transduction may be mediated by dopamine, β-endorphin or neuropeptide Y (NPY) expressing cells, as well as those co-localising kisspeptin, neurokinin B (NKB), and dynorphin (termed KNDy). We investigated the time during the follicular phase when these cells become activated (i.e., co-localise c-Fos) relative to the timing of the LH surge onset and may, therefore, be involved in the surge generating mechanism...
June 19, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28596129/sync-to-link-endorphin-mediated-synchrony-effects-on-cooperation
#19
Martin Lang, Vladimír Bahna, John H Shaver, Paul Reddish, Dimitris Xygalatas
Behavioural synchronization has been shown to facilitate social bonding and cooperation but the mechanisms through which such effects are attained are poorly understood. In the current study, participants interacted with a pre-recorded confederate who exhibited different rates of synchrony, and we investigated three mechanisms for the effects of synchrony on likeability and trusting behaviour: self-other overlap, perceived cooperation, and opioid system activation measured via pain threshold. We show that engaging in highly synchronous behaviour activates all three mechanisms, and that these mechanisms mediate the effects of synchrony on liking and investment in a Trust Game...
June 6, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28587847/molecular-cloning-and-tissue-distribution-of-crh-and-pomc-mrna-in-the-fat-tailed-dunnart-sminthopsis-crassicaudata-an-australian-marsupial
#20
Ellyse B Noy, Melissa K Scott, Sylvia V H Grommen, Kylie A Robert, Bert De Groef
Like all vertebrates, marsupials respond to stressors with the activation of the hypothalamo-pituitary-adrenal axis. However, peptides operating at the higher regulatory levels of this hormonal system, i.e. corticotropin-releasing hormone (CRH) and adrenocorticotropic hormone (ACTH), have not been investigated in marsupials. Here we report the molecular cloning of the precursor cDNAs of CRH (prepro-CRH) and of ACTH (proopiomelanocortin; POMC) in an Australian marsupial, the fat-tailed dunnart (Sminthopsis crassicaudata)...
September 5, 2017: Gene
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