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https://www.readbyqxmd.com/read/29454288/apocynum-venetum-leaf-extract-reverses-depressive-like-behaviors-in-chronically-stressed-rats-by-inhibiting-oxidative-stress-and-apoptosis
#1
Xiangting Li, Ting Wu, Zhonghai Yu, Tingting Li, Jingsi Zhang, Zhennian Zhang, Min Cai, Wen Zhang, Jun Xiang, Dingfang Cai
BACKGROUND: Major depressive disorder (MDD) is a common but serious psychiatric disorder, but current treatments are inadequate for approximately half of the patients with MDD. Thus, better methods of treatment are urgently needed. This study aimed to investigate the antidepressant-like effects and potential mechanism of Apocynum venetum leaf extract (AVLE) in chronic unpredictable mild stress (CUMS) rat model of depression. MATERIALS AND METHODS: The CUMS rat model of depression was used to investigate the antidepressant-like activity and relevant mechanism of AVLE (30, 60, and 125 mg/kg, i...
February 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29452586/the-role-of-glucocorticoid-interleukin-1%C3%AE-and-antioxidants-in-prenatal-stress-effects-on-embryonic-microglia
#2
Jada Bittle, Hanna E Stevens
Maternal stress during pregnancy is associated with an increased risk of psychopathology in offspring. Resident immune cells of the brain, microglia, may be mediators of prenatal stress and altered neurodevelopment. Here, we demonstrate that neither the exogenous pro-inflammatory cytokine, interleukin-1β (IL-1β), nor the glucocorticoid hormone, corticosterone, recapitulated the full effects of prenatal stress on the morphology of microglial cells in the cortical plate of embryonic mice; IL-1β effects showed greater similarity to prenatal stress effects on microglia...
February 16, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29452193/antidepressant-activity-of-vorinostat-is-associated-with-amelioration-of-oxidative-stress-and-inflammation-in-a-corticosterone-induced-chronic-stress-model-in-mice
#3
Athira Kv, Rajaram Mohanrao Madhana, Indu Chandran Js, Mangala Lahkar, Swapnil Sinha, V G M Naidu
Major depressive disorder (MDD) is a multifactorial neuropsychiatric disorder. Chronic administration of corticosterone (CORT) to rodents is used to mimic the stress associated dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis, a well-established feature found in depressive patients. Recently, preclinical studies have demonstrated the antidepressant potential of histone deacetylase (HDAC) inhibitors. So, we examined the antidepressant potential of vorinostat (VOR), a HDAC inhibitor against CORT injections in male mice...
February 13, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29452152/behavioral-and-endocrine-consequences-of-placentophagia-in-male-california-mice-peromyscus-californicus
#4
Juan P Perea-Rodriguez, Meng Zhao, Breanna N Harris, Joel Raqueno, Wendy Saltzman
Ingestion of placenta by mammalian mothers can lead to changes in pain sensitivity, hormone levels, and behavioral responses to newborns. In some biparental mammals, males, in addition to females, ingest placenta when their offspring are born. In the monogamous, biparental California mouse (Peromyscus californicus), males first become attracted to placenta when cohabitating with their pregnant mate, and virgin males administered placenta are less neophobic than males given oil vehicle. In this study, we investigated the effects of placentophagia on pain sensitivity, anxiety-like behavior, behavioral responses to pups, and circulating corticosterone levels of both breeding and nonbreeding male California mice...
February 13, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29451058/developmental-differences-in-stress-responding-after-repeated-underwater-trauma-exposures-in-rats
#5
Daniel E Altman, Laurence P Simmons, Chau T Vuong, Rachel M Taylor, Jason C Sousa, Sean R Marcsisin, Victor E Zottig, Nicole L T Moore
Adolescence is a distinct developmental period characterized by behavioral and physiological maturation. Rapid ongoing changes during neurodevelopment in particular present potential opportunities for stress to have lasting effects on longitudinal outcomes of behavioral and neuroendocrine function. While adult stress effects on outcomes during adulthood have been characterized, little is known about the lasting effects of adolescent repeated stressor exposure on outcomes during adolescence. We have previously reported different stress responses in adolescent rats relative to adult rats, including a blunted fear response outcome in adulthood in rats stressed during adolescence...
February 16, 2018: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/29448033/environmental-enrichment-decreases-avoidance-responses-in-the-elevated-t-maze-and-delta-fosb-immunoreactivity-in-anxiety-related-brain-regions
#6
Danielle A Lopes, Thaissa M O Souza, José S de Andrade, Mariana F S Silva, Hanna K M Antunes, Luciana Le Seur Maluf, Isabel C Céspedes, Milena B Viana
Environmental enrichment (EE) is an animal management technique, which seems to improve adaptation to the experimental conditions of housing in laboratory animals. Previous studies have pointed to different beneficial effects of the procedure in the treatment of several disorders, including psychiatric conditions such as depression. The anxiolytic effects induced by EE, on the other hand, are not as clear. In fact, it has been proposed that EE acts as a mild stressor agent. To better understand the relationship of EE with anxiety-related responses, the present study exposed rats to one week of EE and subsequently tested these animals in the inhibitory avoidance and escape tasks of the elevated T-maze (ETM)...
February 12, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29444592/antidepressant-like-effects-of-vaccinium-bracteatum-in-chronic-restraint-stress-mice-functional-actions-and-mechanism-explorations
#7
Dool-Ri Oh, Yujin Kim, Eun-Jin Choi, Myung-A Jung, Kyo-Nyeo Oh, Ji-Ae Hong, Donghyuck Bae, Kwangsu Kim, Huwon Kang, Jaeyong Kim, Young Ran Kim, Seung Sik Cho, Chul-Young Choi
The fruit of Vaccinium bracteatum Thunb. (VBF) is commonly known as the oriental blueberry in Korea. The aim of this study was to evaluate the antidepressant-like effects of water VBF extract (VBFW) in a mouse model of chronic restraint stress (CRS) and to identify the underlying mechanisms of its action. The behavioral effects of VBFW were assessed in the forced swim test (FST) and open field test (OFT). The levels of serum corticosterone (CORT), brain monoamines, in addition to the extracellular signal-regulated kinases (ERKs)/protein kinase B (Akt) signaling pathway were evaluated...
February 14, 2018: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/29438841/anti-migraine-and-anti-depression-activities-of-tianshu-capsule-by-mediating-monoamine-oxidase
#8
Xiaoping Sun, Fangfang Zhu, Jun Zhou, Xiujuan Chang, Liang Li, Hanfei Hu, Zhenzhong Wang, Wei Xiao
BACKGROUND: Tianshu capsule(TSC)is a Chinese patent medicine. It's widely used to treat migraine clinically in China. AIM OF THE STUDY: In the present study, we investigated anti-migraine and anti-depression activities of TSC using in vivo animal models together with in vitro studies to investigate the mechanism of action. MATERIALS AND METHODS: Nitroglycerin (NTG) -induced migraine rat model, rat was given a subcutaneous injection of the NTG suspension (10 mg/kg) once a week for 5 weeks...
February 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29438543/curcumin-attenuates-heat-stress-induced-oxidant-damage-by-simultaneous-activation-of-gsh-related-antioxidant-enzymes-and-nrf2-mediated-phase-ii-detoxifying-enzyme-systems-in-broiler-chickens
#9
J F Zhang, K W Bai, W P Su, A A Wang, L L Zhang, K H Huang, T Wang
The object of this study was to investigate the effect of curcumin on modulating the glutathione (GSH)-related antioxidant enzymes and antioxidant responses via NF-E2-related factor 2 (Nrf2) signaling pathway in heat-stressed broiler chickens. A total of 400 one-day-old male Arbor Acres broiler chicks was reared in an environmentally controlled room. At 21 d, broiler chicks were divided into 5 treatment groups and were fed one of 4 diets under 2 temperature conditions: 22°C + a basal diet (CON treatment); 34°C for 8 h (0900-1700) + a basal diet supplemented with 0, 50, 100, or 200 mg/kg curcumin (HS, CMN1, CMN2, and CMN3 treatments, respectively)...
February 8, 2018: Poultry Science
https://www.readbyqxmd.com/read/29436637/nicotinamide-phosphoribosyltransferase-and-the-hypothalamic-pituitary-adrenal-axis-of-the-rat
#10
Piotr Celichowski, Karol Jopek, Paulina Milecka, Marta Szyszka, Marianna Tyczewska, Ludwik K Malendowicz, Marcin Ruciński
Nicotinamide phosphoribosyltransferase (Nampt), also termed visfatin, catalyses the rate‑limiting step in the nicotinamide adenine dinucleotide (NAD) salvage pathway. In addition to its intracellular function (iNampt), extracellular Nampt (eNampt) also affects numerous intracellular signalling pathways. The current study investigated the role of Nampt in the regulation of the hypothalamic‑pituitary‑adrenal (HPA) axis in rats. At 1 h after intraperitoneal administration of eNampt (4 µg/100 g) in adult male rats, serum adrenocorticotropic hormone(ACTH) and aldosterone levels remained unchanged, while corticosterone levels were notably elevated compared with the control group, as determined by ELISA...
February 7, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29434572/stress-and-corticosteroids-aggravate-morphological-changes-in-the-dentate-gyrus-after-early-life-experimental-febrile-seizures-in-mice
#11
Jolien S van Campen, Ellen V S Hessel, Kirsten Bohmbach, Giorgio Rizzi, Paul J Lucassen, Sada Lakshmi Turimella, Eduardo H L Umeoka, Gideon F Meerhoff, Kees P J Braun, Pierre N E de Graan, Marian Joëls
Stress is the most frequently self-reported seizure precipitant in patients with epilepsy. Moreover, a relation between ear stress and epilepsy has been suggested. Although ear stress and stress hormones are known to influence seizure threshold in rodents, effects on the development of epilepsy (epileptogenesis) are still unclear. Therefore, we studied the consequences of ear corticosteroid exposure for epileptogenesis, under highly controlled conditions in an animal model. Experimental febrile seizures (eFS) were elicited in 10-day-old mice by warm-air induced hyperthermia, while a control group was exposed to a normothermic condition...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29432437/experimental-increase-in-baseline-corticosterone-level-reduces-oxidative-damage-and-enhances-innate-immune-response
#12
Csongor I Vágási, Laura Pătraș, Péter L Pap, Orsolya Vincze, Cosmin Mureșan, József Németh, Ádám Z Lendvai
Glucocorticoid (GC) hormones are significant regulators of homeostasis. The physiological effects of GCs critically depend on the time of exposure (short vs. long) as well as on their circulating levels (baseline vs. stress-induced). Previous experiments, in which chronic and high elevation of GC levels was induced, indicate that GCs impair both the activity of the immune system and the oxidative balance. Nonetheless, our knowledge on how mildly elevated GC levels, a situation much more common in nature, might influence homeostasis is limited...
2018: PloS One
https://www.readbyqxmd.com/read/29428549/importance-of-the-brain-corticosteroid-receptor-balance-in-metaplasticity-cognitive-performance-and-neuro-inflammation
#13
REVIEW
E R de Kloet, O C Meijer, A F de Nicola, R H de Rijk, M Joëls
Bruce McEwen's discovery of receptors for corticosterone in the rat hippocampus introduced higher brain circuits in the neuroendocrinology of stress. Subsequently, these receptors were identified as mineralocorticoid receptors (MRs) that are involved in appraisal processes, choice of coping style, encoding and retrieval. The MR-mediated actions on cognition are complemented by slower actions via glucocorticoid receptors (GRs) on contextualization, rationalization and memory storage of the experience. These sequential phases in cognitive performance depend on synaptic metaplasticity that is regulated by coordinate MR- and GR activation...
February 8, 2018: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/29427582/increased-plasma-nesfatin-1-levels-may-be-associated-with-corticosterone-il-6-and-crp-levels-in-patients-with-major-depressive-disorder
#14
Qing-Rong Xia, Jun Liang, Yin Cao, Feng Shan, Yang Liu, Ya-Yun Xu
OBJECTIVES: The aim of the present study was to evaluate the plasma nesfatin-1, corticosterone, and inflammatory cytokine (IL-6, CRP, and TNF-α) concentrations cross-sectionally in patients with major depressive disorder. METHODS: Subjects in the patient group were randomly selected from the Anhui Mental Health Center, and subjects in the control group were selected from healthy volunteers. Healthy control subjects were matched in terms of weight and body mass index...
February 7, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29425286/central-neuropeptide-y-plays-an-important-role-in-mediating-the-adaptation-mechanism-against-chronic-stress-in-male-rats
#15
Yu Yang, Reji Babygirija, Jun Zheng, Bei Shi, Weinan Sun, Xiaojiao Zheng, Fan Zhang, Yu Cao
Exposure to continuous life stress often causes gastrointestinal (GI) symptoms. Studies have shown that neuropeptide Y (NPY) counteracts the biological actions of corticotrophin-releasing factor (CRF), and is involved in the termination of the stress response. However, in chronic repeated restraint stress (CRS) conditions, the actions of NPY on GI motility remain controversial. To evaluate the role of NPY in mediation of the adaptation mechanism and GI motility in CRS conditions, a CRS rat model was set up...
February 7, 2018: Endocrinology
https://www.readbyqxmd.com/read/29424043/sex-differences-in-binge-like-etoh-drinking-corticotropin-releasing-hormone-and-corticosterone-effects-of-%C3%AE-endorphin
#16
Todd B Nentwig, Diane E Wilson, Erin M Rhinehart, Judith E Grisel
Binge drinking is an increasingly common pattern of risky use associated with numerous health problems, including alcohol use disorders. Because low basal plasma levels of β-endorphin (β-E) and an increased β-E response to alcohol are evident in genetically at-risk human populations, this peptide is thought to contribute to the susceptibility for disordered drinking. Animal models suggest that the effect of β-E on consumption may be sex-dependent. Here, we studied binge-like EtOH consumption in transgenic mice possessing varying levels of β-E: wild-type controls with 100% of the peptide (β-E +/+), heterozygous mice constitutively modified to possess 50% of wild-type levels (β-E +/-) and mice entirely lacking the capacity to synthesize β-E (-/-)...
February 8, 2018: Addiction Biology
https://www.readbyqxmd.com/read/29420593/preconception-paternal-bisphenol-a-exposure-induces-sex-specific-anxiety-and-depression-behaviors-in-adult-rats
#17
Ying Fan, Chong Tian, Qilin Liu, Xianyue Zhen, Hui Zhang, Liangneng Zhou, Taibiao Li, Yun Zhang, Shibin Ding, Dongliang He, Xin Jin, Jian Liu, Beibei Zhang, Nannan Wu, Anne Manyande, Maoshu Zhu
Bisphenol A (BPA), an environmental endocrine-disrupting compound, has drawn a great attention for its adverse effect on behavioral development. Maternal exposure to this compound has been reported to induce anxiety and depression in offspring, but the effect of its paternal exposure is rarely discussed. This study investigated whether preconception paternal BPA exposure can affect the emotions of male rats and their offspring. Eighteen adult male rats (F0) received either a vehicle or 50 μg/kg/day BPA diet for 21 weeks and were then mated with non-exposed females to produce offspring (F1)...
2018: PloS One
https://www.readbyqxmd.com/read/29419799/inhibition-of-phosphodiesterase-4-by-fcpr03-alleviates-lipopolysaccharide-induced-depressive-like-behaviors-in-mice-involvement-of-p38-and-jnk-signaling-pathways
#18
Hui Yu, Zhengqiang Zou, Xiaolin Zhang, Wanli Peng, Chen Chen, Yicheng Ye, Jiangping Xu, Haitao Wang
Inflammatory responses induced by peripheral administration of lipopolysaccharide (LPS) triggers depressive-like behavioral syndrome in rodents. Inhibition of phosphodiesterase 4 (PDE4) produces a robust anti-inflammatory effect in inflammatory cells. Unfortunately, archetypal PDE4 inhibitors cause intolerable gastrointestinal side-effects, such as vomiting and nausea. N-isopropyl-3-(cyclopropylmethoxy)-4-difluoromethoxy benzamide (FCPR03) is a novel, selective PDE4 inhibitor with little, or no, emetic potency...
February 8, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29416857/glp1-and-gip-are-involved-in-the-action-of-synbiotics-in-broiler-chickens
#19
Pawel Antoni Kolodziejski, Maciej Sassek, Daniela Chalupka, Natalia Leciejewska, Leszek Nogowski, Pawel Mackowiak, Damian Jozefiak, Katarzyna Stadnicka, Maria Siwek, Marek Bednarczyk, Tomasz Szwaczkowski, Ewa Pruszynska-Oszmalek
Background: In order to discover new strategies to replace antibiotics in the post-antibiotic era in meat-type chicken production, two new synbiotics were tested: (Lactobacillus salivarius IBB3154 plus galactooligosaccharide (Syn1) and Lactobacillus plantarum IBB3036 plus raffinose family oligosaccharides (Syn2). Methods: The synbiotics were administered via syringe, using a special automatic system, into the egg air chamber of Cobb 500 broiler chicks on the 12th day of egg incubation (2 mg of prebiotics + 105 cfu bacteria per egg)...
2018: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/29414008/analysis-by-lc-ms-ms-of-endogenous-steroids-from-human-serum-plasma-endometrium-and-endometriotic-tissue
#20
Merja R Häkkinen, Taija Heinosalo, Niina Saarinen, Tero Linnanen, Raimo Voutilainen, Timo Lakka, Jarmo Jääskeläinen, Matti Poutanen, Seppo Auriola
An LC-MS/MS method was developed and validated to analyze simultaneously estrogens (estradiol, E2; estrone, E1), androgens (testosterone, T; androstenedione, A4; dehydroepiandrosterone, DHEA), progestagens (17a-hydroxypregnenolone, 17OHP5; 17a-hydroxyprogesterone, 17OHP4; progesterone, P4), glucocorticoids (cortisol, F; cortisone E; corticosterone, B; 11-deoxycortisol, S; 21-hydroxyprogesterone, 21OHP4), and mineralocorticoids (aldosterone, A) from 150 μl of human serum, plasma, or endometrium and endometriotic tissue homogenates...
January 31, 2018: Journal of Pharmaceutical and Biomedical Analysis
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