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Tetramethylpyrazine reverses anxiety-like behaviors in a rat model of post-traumatic stress disorder
Bombi Lee, Insop Shim, Hyejung Lee, Dae-Hyun Hahm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 14 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2018, Vol.22 No.5 6 525-538 (14 pages)
Freezing behavior was defined as complete immobility except for minor movements required for respiration. Corticosterone, corticotropin-releasing hormone, adrenocorticotroic hormone, and 5-HT measurement After the 15 days of rest designed to allow the development of PTSD, corticosterone (CORT), corticotropin-releasing hormone (CRH), and adrenocorticotroic hormone (ACTH) in the plasma, and... Post-traumatic stress disorder (PTSD) is a trauma-induced psychiatric disorder characterized by impaired fear extermination, hyperarousal, and anxiety that may involve the release of monoamines in the fear circuit. The reported pharmacological properties of tetramethylpyrazine (TMP) include anti-cancer, anti-diabetic, anti-atherosclerotic, and neuropsychiatric activities. However, the anxiolytic-like effects of TMP and its mechanism of action in PTSD are unclear. This study measured several... -
Calcium permeability of transient receptor potential canonical (TRPC) 4 channels measured by TRPC4-GCaMP6s
JuyeonKo, JongyunMyeong, DongkiYang, InsukSo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.1 16 133-140 (8 pages)
induced a calcium increase. The expression of TRPC4 resulted in an additional calcium increase above the basal level. We preferred current measurement to calcium measurement for TRPC4 channels, since calcium measurements always include calcium released from CRAC channels as well as from the expressed channels. Thus, GCaMP6s-tagged TRPC4 or TRPC5 channels could be used as tools for studying... Conflicting evidence has been obtained regarding whether transient receptor potential cation channels (TRPC) are store-operated channels (SOCs) or receptor-operated channels (ROCs). Moreover, the Ca/Na permeability ratio differs depending on whether the current-voltage (I-V) curve has a doubly rectifying shape or inward rectifying shape. To investigate the calcium permeability of TRPC4 channels, we attached GCaMP6s to TRPC4 and simultaneously measured the current and calcium signals. A TRPC4... -
Effects of systemic administration of ibuprofen on stress response in a rat model of post-traumatic stress disorder
BombiLee, BongjunSur, MijungYeom, InsopShim, HyejungLee, Dae-HyunHahm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2016, Vol.20 No.4 5 357-366 (10 pages)
or interval between each behavioral test. Following behavioral testing and the measurement of body weight, all rats were sacrificed and their brain tissues were collected immediately for use in the study or stored at 70°C for later use. Elevated plus maze test Animals exhibiting anxietylike behaviors typically experience a reduced number of entries and amount of time spent in the open... Pro-inflammatory cytokine and brain-derived neurotrophic factor (BDNF) are modulated in post-traumatic stress disorder (PTSD). This study investigated the effects of ibuprofen (IBU) on enhanced anxiety in a rat model of PTSD induced by a single prolonged stress (SPS) procedure. The effects of IBU on inflammation and BDNF modulation in the hippocampus and the mechanisms underlying for anxiolytic action of IBU were also investigated. Male Sprague-Dawley rats were given IBU (20 or 40 mg/kg, i.p.,... -
Glycyrrhizin Attenuates MPTP Neurotoxicity in Mouse and MPP+-Induced Cell Death in PC12 Cells
YunJeongKim, ChungSooLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.2 5 65-72 (8 pages)
were determined using the extinction coefficient of 6.22 mM -1cm -1. One unit of the enzyme is defined as 1 nmol NADPH consumed/min/mg of protein. Measurement of lipid peroxidation The lipid peroxidation prod uct in brain homogenates was assayed by measurement of the MDA concentration using the thiobarbituric acid method. Brain homogenates (0.4 mg of protein/ml) of mice exposed to MPTP were... The present study examined the inhibitory effect of licorice compounds glycyrrhizin and a metabolite 18Ղ-glycyrrhetinic acid on the neurotoxicity of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in the mouse and on the 1-methyl-4-phenylpyridinium (MPP+)-induced cell death in differentiated PC12 cells. MPTP treatment increased the activities of total superoxide dismutase, catalase and glutathione peroxidase and the levels of malondialdehyde and carbonyls in the brain compared to... -
Dietary Ascorbate Supplementation Reduces Oxidative Tissue Damage and Expression of iNOS in the Kidney of Streptozotocin Induced Diabetic Rats
MyungSeoupChoi, YoonYoungJang, WooSeungLee, JinHoSong, YongKyooShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.1 8 39-45 (7 pages)
was calculated by using an extinction coefficient of 2.1×10 4 M -1 cm -1 at 550 nm (Cohen & Chovaniec, 1978). Measurement of lipid peroxidation The sample was homogenized in 10 volume K-H buffer using a Polytron (PCU-2) homogenizer (Kinematica GMBH, Luzern, Switzerland). Homogenates were centrifuged at 12,500 g at 4 oC for 30 minutes. The supernatants were then collected. Lipid peroxidation... Reactive oxygen species (ROS) have been suggested to be contributory factors in complications of diabetes mellitus. In the present study, we investigated the generation of superoxide, the lipid peroxide level measured as thiobarbituric acid reactive substances, the vasorelaxation of isolated thoracic aorta and the iNOS expression in kidney of streptozotocin induced diabetic rats. Sprague Dawley rats were divided into four groups: control, ascorbate (400 mg/kg rat weight daily in drinking water),... -
당뇨병성 신증의 발생에 있어서 산화성 스트레스의 역할
장연진(Yeon Jin Jang), 박형섭(Hyoung-sup Park), 김현식(Hyoun Sik Kim), 홍혜남(Hea Nam Hong), 김미경(Mi Kyung Kim) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1995, 제 31권 제 1호 10 95-102 (8 pages)
examinations. Glycated hemoglobin (GHb) assay GHb representing long-term hyperglycemia was measured with Glyc-Affin GHb kit using affinity chromatography (Abraham et al., 1983). Measurement of blood pressure and 24-hr total urine protein excretion Arterial blood pressure and 24-hr total urine protein were measured before the nephrectomy and 1 ~3 days prior to the... 당뇨병성 신증은 만성 당뇨병에서 흔히 동반되는 심각한 합병증이나 그 발생기전은 확실히 밝혀져 있지 않다. 본 연구에서는 암, 노화, 염증등 여러 가지 질환의 발생에 관여한다고 알려진 산화성 스트레스의 증가가 당뇨병성 신증의 발생에 관여하는지를 알아 보았다. 쥐에서 신증의 유발을 용이하게 하기 위해 먼저 한쪽 신장을 적출한후 스트렙토조토신을 주사하여 당뇨병을 유발하였다(NEPH-STZ). 당뇨병 유발 8주후, NEPH-STZ쥐들은 심한 고혈당증, 단백뇨, 고혈압의 증상을 보였으며 신장조직은 보상성 비대와 함께... -
Fe2+에 의한 지질 과산화에 있어서 Quercetin과 Rutin의 억제 작용
정진희(Jin-Hee Chung), 이정수(Chung-Soo Lee), 신용규(Yong-Kyoo Shin), 이광수(Kwang-Soo Lee) 대한약리학회 대한약리학잡지 12 Pages
대한약리학회 대한약리학잡지 1991, 제 27권 제 1호 8 69-80 (12 pages)
solu- tion and oxidation or redution rate of iron was measured at 512 nm. Rate of oxidation or re- duction of iron was expressed as nmoles/min using the molar extinction coefficient of 1.11 x 10 4/M/cm for ferrous ion-phenanthroline com- plex. Measurement of H202decomposition The concentration of H2O2 was measured by the method of Allen et al.(l... Iron(II)에 의한 마이크로좀의 지질 과산화에 미치는 quercetin과 rutin의 억제 효과를 iron의 산화중에서 생성되는 산소 라디칼에 대한 제거 작용과 iron에 대한 킬레이트 작용에 관하여 관찰하였다. Fe2+ 단독에 의한 지질 과산화는 quercetin 또는 rutin에 의하여 용량에 따라 현저하게 억제되었다. Fe2+의 존재하에서 ascorbate또는 NADPH에 의한 지질 과산화는 quercetin과 rutin에 의하여 거의 완전히 억제되었다. Fe2+의 과산화 작용은 SOD와 DABCO에 의하여 억제되었고 catalase, DMSO와 mannitol에 의하여 약간 억제되었다.... -
Culturing Simpler and Bacterial Wilt Suppressive Microbial Communities from Tomato Rhizosphere
Nazish Roy, Kihyuck Choi, Raees Khan, Seon-Woo Lee 한국식물병리학회 The Plant Pathology Journal 13 Pages
한국식물병리학회 The Plant Pathology Journal 2019, 35권 4호 8 362-374 (13 pages)
among the microbial communities of samples. To view what level of variation in terms of community population dynamics existed among samples, measure- ments of variation were performed. Measurement of alpha diversity for observed species and Shannon diversity index (Fig. 2) ran on Wilcoxon signed-rank test. Significant dif- ference for comparison between upland rhizosphere and upland MM9 (P =... Plant phenotype is affected by a community of associated microorganisms which requires dissection of the functional fraction. In this study, we aimed to culture the functionally active fraction of an upland soil microbiome, which can suppress tomato bacterial wilt. The microbiome fraction (MF) from the rhizosphere of Hawaii 7996 treated with an upland soil or forest soil MF was successively cultured in a designed modified M9 (MM9) medium partially mimicking the nutrient composition of tomato... -
Analysis of in planta Expressed Orphan Genes in the Rice Blast Fungus Magnaporthe oryzae
한국식물병리학회 The Plant Pathology Journal 8 Pages
한국식물병리학회 The Plant Pathology Journal 2014, 30권 4호 4 367-374 (8 pages)
7 days after inoculation. (B) Disease score measurement was performed on 7-day diseased leaves of all strains, as described by Valent et al., 1991. The data are the mean ± standard deviation of three independent experiments and all data are statistically analyzed using Tukey test (p<0.05). Fig. 3. Genomic features of new born genes in M. oryzae. (A) Gene length, (B) GC content in coding DNA... formed during the evolutionary history of M. oryzae. Synteny analyses using closely related fungal species corroborated the notion that these genes evolved de novo in the M. oryzae genome. In this report, we discuss our inability to detect phenotypic changes in the four deletion mutants. Based on these results, the four orphan genes may be products of de novo gene birth processes, and their adaptive potential is in the course of being tested for retention or extinction through natural selection.