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Chinese Journal of Physiology

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https://www.readbyqxmd.com/read/30139246/differential-expression-of-phosphorylated-erk-and-c-fos-of-limbic-cortices-activities-in-response-to-tactile-allodynia-of-neuropathic-rats
#1
Hsiao-Chun Lin, Chen-Tung Yen
Neuropathic pain is due to lesion or dysfunction of the somatosensory system. Treating patients with neuropathic pain is difficult because the underlying mechanisms are understood limitedly, especially at the supraspinal level. In this study, we used two kinds of molecular markers to investigate the neuronal activity changes in the anterior cingulate cortex, insular cortex (IC), and medial prefrontal cortex (mPFC) of the neuropathic rats under tactile allodynia. We used spared nerve injury of the sciatic nerve (SNI) as the neuropathic pain model...
August 24, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/30139245/glutathione-s-transferase-pi-is-involved-in-the-growth-of-mice
#2
Xiaoliang Dong, Bing Rui, Fangyuan Yin, Dan Chen, Ling Li, Zhimin Yin, Lan Luo
Glutathione S-transferase Pi (GSTpi) is the most important subtribe of GSTs protein superfamily, and plays an important role in the process of detoxification, antioxidant and antiinflammation. Here we use a GSTpi inhibitor, 6-(7-nitro-2, 1, 3-benzoxadiazol-4-ylthio) hexanol (NBDHEX), to evaluate the effect of GSTpi on the growth of mice. Mice treated with NBDHEX have heavier weight and longer length. But there is no significant difference in ratios of the weights of brain, kidney, lung, spleen, liver and heart to the whole body weight and Lee’s index between NBDHEX and control mice...
August 24, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/30139243/effect-of-captopril-on-ca%C3%A2-%C3%A2-%C2%BA-homeostasis-and-cell-viability-in-human-hepatoma-cells
#3
I-Shu Chen, Chiang-Ting Chou, Wei-Zhe Liang, Yuan-Yuarn Liu, Chun-Chi Kuo, Jue-Long Wang, Lyh-Jyh Hao, Chung-Ren Jan
Captopril, an angiotensin-converting enzyme (ACE) inhibitor, induced different Ca²⁺ signaling responses in various cell models. However, the effect of captopril on Ca²⁺ homeostasis and cell viability in hepatoma cells is unknown. This study examined whether captopril altered Ca²⁺ homeostasis and viability in HepG2 human hepatoma cells. Intracellular Ca²⁺ concentrations in suspended cells were monitored by using the fluorescent Ca²⁺-sensitive dye fura-2. Cell viability was examined by using 4-[3-[4-lodophenyl]-2-4(4-nitrophenyl)-2H-5-tetrazolio-1,3-benzene disulfonate] water soluble tetrazolium-1 (WST-1)...
August 24, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/30139242/farnesoid-x-receptor-activation-modulates-calcium-homeostasis-in-rat-aortic-vascular-smooth-muscle-cells
#4
Ran Zhang, Liang Peng, Haihong Ran, Yongyan Fan, Yu Zhao, Feng Cao
The farnesoid X receptor (FXR) is a member of the nuclear receptor superfamily that is expressed in the vasculature; our previous work showed that FXR regulated vascular reactivity through NO mechanism. The underlying mechanism for the regulation of vascular tension by FXR remains unclear. The present work was designed to investigate whether FXR regulates calcium homeostasis in aortic vascular smooth muscle cells (VSMCs). Protein abundances of angiotensin II type 1 and 2 receptors (AT₁R, AT₂R), bradykinin type 1 and 2 receptors (B₁R, B₂R), and the inositol 1,4,5-trisphosphate receptor (IP₃R) were analyzed by western blotting...
August 24, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/30139238/serotonin%C3%A2-receptors-in-the-prelimbic-cortex-are-involved-in-the-regulation-of-anxiety-like-behaviors-in-the-rat-6-hydroxydopamine-parkinson%C3%A2-s-disease-model
#5
Yu-Ming Zhang, Yuan Guo, Cheng-Xue Du, Jin Zhang, Shu-Xuan Lv, Jian Liu
The role of serotonin₆ (5-HT₆) receptors in the regulation of anxiety is poorly understood, particularly in Parkinson’s disease-related anxiety. Here we examined whether 5-HT₆ receptors in the prelimbic cortex (PrL) involve in the regulation of anxiety-like behaviors in sham-operated rats and rats with unilateral 6-hydroxydopamine lesions of the medial forebrain bundle. The lesion induced anxiogenic responses as measured by the open-field and elevated-plus maze tests compared to sham-operated rats. Intra-PrL injection of 5-HT₆ receptor agonist WAY208466 (0...
August 24, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29742817/effects-of-thyroid-dysfunction-on-reproductive-hormones-in-female-rats
#6
Juan Liu, Meng Guo, Xusong Hu, Xuechun Weng, Ye Tian, Kaili Xu, Dai Heng, Wenbo Liu, Yu Ding, Yanzhou Yang, Cheng Zhang
Thyroid hormones (THs) play a critical role in the development of ovarian cells. Although the effects of THs on female reproduction are of great interest, the mechanism remains unclear. We investigated the effects of TH dysregulation on reproductive hormones in rats. Propylthiouracil (PTU) and L-thyroxine were administered to rats to induce hypo- and hyperthyroidism, respectively, and the reproductive hormone profiles were analyzed by radioimmunoassay (RIA). Ovarian histology was evaluated with hematoxylin and eosin (H&E) staining, and gene protein level or mRNA content was analyzed by western blotting or reverse transcription polymerase chain reaction (RT-PCR)...
June 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29742816/angiostrongylus-cantonensis-conditioned-culture-medium-induces-myelin-basic-protein-alterations-via-erk1-2-and-nf-%C3%AE%C2%BAb-activation-in-rat-rsc96-schwann-cells
#7
Jo-Ping Chin, Chien-Min Chen, Tsong-Hai Lee, Chii-Wen Chou, Cheng-You Lu
Eating of excessive raw or undercooked environmental snails produces angiostrongyliasis demyelination caused by Angiostrongylus cantonensis (A. cantonensis). The aim of this study was to investigate the association between extracellular signal-regulated kinase (Erk)1/2-nuclear factor (NF)-κB pathway and myelin basic protein (MBP) expression in RSC96 Schwann cells treated with A. cantonensis-conditioned culture medium, which was prepared by culturing the third-stage (L3) nematode larvae in DMEM for 72 h. The supernatants were collected and filtered before use...
June 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29962179/low-intensity-exercise-with-blood-flow-restriction-increases-muscle-strength-without-altering-hscrp-and-fibrinogen-levels-in-healthy-subjects
#8
Hening Laswati, David Sugiarto, Dewi Poerwandari, Jahja Alex Pangkahila, Hiroaki Kimura
Strengthening exercise combined with blood flow restriction potentially increases muscle strength. This type of exercise does not require heavy weight liftings and is a feasible method to be performed by persons suffering illnesses. However, strengthening exercise may induce inflammatory responses due to muscle and vascular endothelial damage. This study aimed to investigate alterations of high-sensitivity C-reactive protein (hsCRP) and fibrinogen levels in healthy subjects after five weeks of low intensity resistance training (LIRT) with blood flow restriction (BFR) on increasing strength in comparison with high intensity resistance training (HIRT) and LIRT alone, and to evaluate aspects related to the relative safety of LIRT + BFR...
June 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29962178/a-single-bout-of-exercise-reduces-postprandial-lipemia-but-has-no-delayed-effect-on-hemorheological-variables
#9
Chih-Hui Chiu, Tsung-Jen Yang, Hong Jen Liang, Cheng-Kang Chang, Ching-Lin Wu
High plasma triglyceride (TG) concentration in fasting state could cause hemorheological abnormality, thus increasing the incidence of metabolic diseases. Exercise has been reported to effectively reduce postprandial TG response. This study aimed to investigate whether a single bout of pre-prandial exercise can affect lipemia and hemorheological variables after a high-fat meal. Nine healthy young male subjects completed two experimental trials. The subjects walked for 1 h at 50% maximal oxygen uptake (V̇O₂max) (the exercise, EX trial), or rested (the control, CON trial)...
June 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29962177/zerumbone-from-zingiber-zerumbet-ameliorates-lipopolysaccharide-induced-icam-1-and-cytokines-expression-via-p38-mapk-jnk-i%C3%AE%C2%BAb-nf-%C3%AE%C2%BAb-pathway-in-mouse-model-of-acute-lung-injury
#10
Chien-Ying Lee, Shih-Pin Chen, Chun-Hung Su, Yung-Chyuan Ho, Ming-Ling Yang, Shiuan-Shinn Lee, Rosa Huang-Liu, Ching-Ping Yang, Chun-Jung Chen, Yu-Hsiang Kuan
Acute lung injury (ALI) is a clinical syndrome with high morbidity and mortality rates mainly caused by Gram-negative bacteria. Nevertheless, an effective treatment strategy for ALI is yet to be developed. Zerumbone, a sesquiterpene isolated from Zingiber zerumbet Smith, possesses several advantageous bioeffects such as antioxidation, anti-inflammation, and antiulcer. Pretreatment of zerumbone inhibited lipopolysaccharide (LPS)-induced arterial blood gas exchange, neutrophils infiltration, and increased pulmonary vascular permeability...
June 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29962176/effect-of-lactobacillus-plantarum-twk10-on-improving-endurance-performance-in-humans
#11
Wen-Ching Huang, Yi-Ju Hsu, HuaShuai Li, Nai-Wen Kan, Yi-Ming Chen, Jin-Seng Lin, Tien-Ken Hsu, Tsung-Yu Tsai, Yen-Shuo Chiu, Chi-Chang Huang
Microbiota is currently an important issue in disease and health and many studies have revealed it to play an important role in physiological homeostasis and health promotion. Lactobacillus plantarum (L. plantarum), isolated from Taiwan pickled vegetables, is a well-known probiotic microorganism. In a recent animal study, it was shown that supplementation of mice with L. plantarum TWK10 (TWK10) could increase muscle mass, improve exercise performance and exert anti-fatigue effects. In order to examine the ergogenic effect of TWK10 supplementation on endurance performance in humans, we conducted a human double-blind placebo-controlled clinical study...
June 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29962175/a-novel-swimming-performance-test-in-rats
#12
Aristidis S Veskoukis, Antonios Kyparos, Vassilis Paschalis, Michalis G Nikolaidis
Swimming is an advantageous exercise modality since it induces limited muscle damage. Performance is a crucial endpoint measurement of physiological relevance in exercise physiology and clinical settings alike. To our knowledge, the literature lacks a comprehensive and widely accepted swimming performance protocol without suffering from high variability in time to exhaustion. Thus, the present study presents an easily carried out, two-phased swimming performance incremental test exhibiting low variability in the time to exhaustion among rats...
June 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29689688/swimming-exercise-induced-reversed-expression-of-mir-96-and-its-target-gene-nav1-3-in-diabetic-peripheral-neuropathy-in-rats
#13
Amir Mahmoudi Aghdam, Parviz Shahabi, Elham Karimi-Sales, Rafigheh Ghiasi, Saeed Sadigh-Eteghad, Javad Mahmoudi, Mohammad Reza Alipour
Diabetes is a common metabolic disease which leads to diabetic peripheral neuropathy. Recently, the role of microRNA-96 (miR-96) in alleviating neuropathic pain by inhibiting the expression of NaV1.3, an isoform of voltage-gated sodium channels, has been shown. Peripheral nerve injuries result in NaV1.3 elevation. Exercise has beneficial role in diabetes management and peripheral neuropathy. However, the effects of exercise on miR-96 and its target gene NaV1.3 in diabetic rats are unknown. Therefore, the present study investigated the effects of exercise training on the expression of miR-96 and NaV1...
April 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29660975/synergistic-effects-of-psychosocial-stress-and-mild-peripheral-infection-on-inducing-microglial-activation-in-the-hippocampal-dentate-gyrus-and-long-lasting-deficits-in-hippocampus-related-memory
#14
Wen-Yu Tzeng, Chien-Chou Su, Li-Han Sun, Chianfang G. Cherng, Lung Yu
Lipopolysaccharide (LPS) treatment and stress may cause immune activation in the brain, an event which has been thought to play a role in mediating stress-induced cognitive dysfunction. However, the enduring impact of psychosocial stress on brain immune activation or cognitive deficits has not been well investigated. Likewise, it remains unexplored whether there exist synergistic effects of psychosocial stress and a weak systemic LPS treatment on brain immune activation and/or cognitive function. In this work, a 10-day social defeat regimen was used to model psychosocial stress and the number and density of ionized calcium-binding adaptor molecule 1 (Iba1)-stained microglia was used to reveal brain immune activation in male Balb/C mice...
April 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29590745/high-frequency-stimulation-of-the-subthalamic-nucleus-activates-motor-cortex-pyramidal-tract-neurons-by-a-process-involving-local-glutamate-gaba-and-dopamine-receptors-in-hemi-parkinsonian-rats
#15
Chi-Fen Chuang, Chen-Wei Wu, Ying Weng, Pei-San Hu, Shin-Rung Yeh, Yen-Chung Chang
Deep brain stimulation (DBS) is widely used to treat advanced Parkinson’s disease (PD). Here, we investigated how DBS applied on the subthalamic nucleus (STN) influenced the neural activity in the motor cortex. Rats, which had the midbrain dopaminergic neurons partially depleted unilaterally, called the hemi-Parkinsonian rats, were used as a study model. c-Fos expression in the neurons was used as an indicator of neural activity. Application of high-frequency stimulation (HFS) upon the STN was used to mimic the DBS treatment...
April 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29526078/hot-water-bathing-impairs-training-adaptation-in-elite-teen-archers
#16
Ta-Cheng Hung, Yi-Hung Liao, Yung-Shen Tsai, Lisa Ferguson-Stegall, Chia-Hua Kuo, Chung-Yu Chen
Despite heat imposes considerable physiological stress to human body, hot water immersion remains as a popular relaxation modality for athletes. Here we examined the lingering effect of hot tub relaxation after training on performance-associated measures and dehydroepiandrosterone sulfate (DHEA-S) in junior archers. Ten national level archers, aged 16.6 ± 0.3 years (M = 8, F = 2), participated in a randomized counter-balanced crossover study after baseline measurements. In particular, half participants were assigned to the hot water immersion (HOT) group, whereas another halves were assigned to the untreated control (CON) group...
April 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29526077/sex-differences-in-the-age-of-peak-marathon-race-time
#17
Pantelis T. Nikolaidis, Thomas Rosemann, Beat Knechtle
Recent studies showed that women were older than men when achieving their fastest marathon race time. These studies, however, investigated a limited sample of athletes. We investigated the age of peak marathon performance in a large sample of female and male marathon finishers by using data from all finishers. We analyzed the age of peak marathon performance in 1-year and 5-year age intervals of 451,637 runners (i.e. 168,702 women and 282,935 men) who finished the ‘New York City Marathon’ between 2006 and 2016, using analysis of variance and non-linear regression analysis...
April 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29526076/semen-parameter-alteration-histological-changes-and-role-of-oxidative-stress-in-adult-rat-epididymis-on-exposure-to-electronic-cigarette-refill-liquid
#18
Dalila Rahali, Aicha Jrad-Lamine, Yosra Dallagi, Yassine Bdiri, Nathalie Ba, Michele El May, Saloua El Fazaa, Narges El Golli
Electronic cigarettes (e-cigarettes) are devices intended to substitute conventional cigarettes, with the aim of being less harmful. In a previous report, we showed that intraperitoneal (i.p.) injection of e-cigarette liquid (E-liquid), with or without nicotine, induced toxicity in the testes of Wistar rats by disrupting oxidative balance and steroidogenesis. In the present work, we further evaluated the impact of e-liquid with or without nicotine on the epididymis of rats using the same procedure. Results showed that e-liquid treatments led to alteration of semen parameters, with a significant drop of at least 50% in sperm vitality, a significant increase of morphologically abnormal spermatozoa and an imbalance of redox status in comparison to the control group...
April 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29526075/inverse-correlation-between-methylation-and-expression-of-the-delta-like-ligand-1-gene-in-gastric-cancer
#19
Chien-Heng Shen, Shui-Yi Tung, Min-Jen Tseng, Yu-Wei Leu
Notch signaling is a candidate pathway that transmits environmental information into the cell and interferes with the epigenome of gastric cancer. This study aimed to explore if the Notch pathway was abnormally regulated during gastric tumorigenesis. To achieve the goal, Delta-like ligand 1 (DLL1) gene expression, Notch upstream signal, promoter methylation and its correlation with DLL1 expression were examined by methylation-specific polymerase chain reaction (PCR) and real-time PCR (RT-PCR) in cultured gastric cancer cell lines or gastric cancer patient samples...
April 30, 2018: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/29374959/impact-of-high-altitude-on-maternal-serum-leptin-level-and-its-correlation-with-oxidative-stress-and-endothelial-inflammatory-markers-in-preeclamptic-women
#20
Salah Omar Bashir, Mohamed Darwesh Morsy, Abass Omar Elkarib, Humeda Suekit Humeda, Abdalla Abdelrahim Abusham, Moutasem Salih Aboonq, Ahmed Ibrahim Agamy
Involvement of leptin in the pathogensis of preeclampsia (PE) is still a controversy subject. Several researches reported the changes in serum leptin in high altitude (HA) residents. The aim of the present work was to investigate the impact of oxidative stress (OS) induced by HA residence on maternal serum leptin in PE and if there was a significant correlation between the serum leptin with either OS or endothelial inflammatory markers. One hundred fifty eight pregnant women were included in this study, divided into: low altitude normal pregnancies (NL), HA normal pregnancies (NH), low altitude preeclamptic (PL), and HA preeclamptic (PH) who presented to the obstetrics and gynecology outpatient clinic in both Muhayl (500 m over sea level) and Abha General Hospitals (all of them resident at Alsoda district with the average altitude 2700 m over sea level)...
February 28, 2018: Chinese Journal of Physiology
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