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Calcium Current in the Unfertilized Egg of the Hamster
Haan, Jae-Hee, Cho, Soo-Wan, Yang, Young-Sun, Park, Young-Geun, Park, Hong-Gi, Chang, Gyeong-Jae, Kim, Yang-Mi, Park, Choon-Ok, Hong, Se 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 12 215-224 (10 pages)
..PAGE:1 Kor J Physiol (1994) 28(2), 215-224 Calcium Current in the Unfertilized Egg of the Hamster Jae-Hee Haan, Soo-Wan Cho, Young-Sun Yang, Young-Geun Park, Hong-Gi Park, Gyeong-Jae Chang, Yang-Mi Kim, Choon-Ok Park and Seong-Geun Hong Department of Physiology, Gyeongsang National University College of Medicine, Chinju 660-280 =ABSTRACT= The presence of a calcium current (ica) passed... in the bathing solution, indicating that the inward current is carried by Ca2+. The maximal amplitude was -4.12±0.58nA (n=12) with 10mM Ca2+ at -3OmV from a holding potential of -8OmV. This current reached its maximum within 20ms beyond -3OmV and decayed rapidly with an inactivation time constant τ of 15ms. Activation and inactivation of this iCa2+ was steeply dependent on the membrane potential. The iCa2+ began to activate at the lower voltage of -55 mV and reached its peak at -35 mV, being... -
Calcium-sensing receptor-mediated L-tryptophan-induced secretion of cholecystokinin and glucose-dependent insulinotropic peptide in swine duodenum
Xiuying Zhao, Yihan Xian, Chao Wang, Liren Ding, Xianglong Meng, Weiyun Zhu, Suqin Hang 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 2호 4 179-187 (9 pages)
system described by Badger [1] and later modified by Hansen and Conn [7] and Tan et al. [25] was used in the current study. Panel A in Fig. 1 depicts the perfusion system, which is composed of an oxygen bomb, a constant-flow pump, a media reservoir, a water bath, a tissue chamber, and a silica-gel pipe. A sterile single-use 5-mL syringe was used for construction of the chamber (panel B in... This study aimed to elucidate the effect of tryptophan (Trp) on gut hormone secretion as well as the roles of the calcium-sensing receptor (CaSR) and its downstream signaling pathway in gut hormone secretion by assessing swine duodenal perfusion in vitro. Swine duodenum was perfused with Krebs-Henseleit buffer as a basal solution. Various concentrations (0, 10, and 20 mM) of Trp were applied to investigate its effect on gut hormone secretion. A CaSR antagonist was used to detect the involvement... -
Cloning, expression and functional analysis of the duck Toll-like receptor 5 (TLR5) gene
Yuqiang Cheng, Yingjie Sun, Hengan Wang, Shuduan Shi, Yaxian Yan, Jing Li, Chan Ding, Jianhe Sun 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 1호 6 37-46 (10 pages)
spleen after Herts33 infection. Unlike Mx and PKR, OAS expression was especially strong in liver after infection with Herts33 while PKR and Mx expression was stronger in spleen. Discussion In the current study, we cloned the 2580 bp dTLR5 gene, which shared a high amino acid sequence similarity with goose and chicken TLR5 genes as well as a moderate similarity with mouse and human TLR5 gene... Toll-like receptor 5 (TLR5) is responsible for the recognition of bacterial flagellin in vertebrates. In the present study, the first TLR5 gene in duck was cloned. The open reading frame (ORF) of duck TLR5 (dTLR5) cDNA is 2580 bp and encodes a polypeptide of 859 amino acids. We also cloned partial sequences of myeloid differentiation factor 88, 2’-5’-oligoadenylate synthetase (OAS), and myxovirus resistance (Mx) genes from duck. dTLR5 mRNA was highly expressed in the... -
Distinct Cellular Calcium Metabolism in Radiation-sensitive RKO Human Colorectal Cancer Cells
YunTaiKim, SooShinJo, YoungJunPark, MyungZaLee, ChangKookSuh 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.6 10 509-516 (8 pages)
2＋ current in human prostate cancer LNCaP cells: involvement in apoptosis. J Physiol. 2000;527 Pt 1:71-83. 22. C h e n R , V a l e n c i a I , Z h o n g F , M c C o l l K S , R o d e r i c k H L , Bootman MD, Berridge MJ, Conway SJ, Holmes AB, Mignery GA, Velez P, Distelhorst CW. Bcl-2 functionally interacts with inositol 1,4,5-trisphosphate receptors to regulate calcium release from the ER... Radiation therapy for variety of human solid tumors utilizes mechanism of cell death after DNA damage caused by radiation. In response to DNA damage, cytochrome c was released from mitochondria by activation of pro-apoptotic Bcl-2 family proteins, and then elicits massive Ca2＋ release from the ER that lead to cell death. It was also suggested that irradiation may cause the deregulation of Ca2＋ homeostasis and trigger programmed cell death and regulate death specific enzymes. Thus, in this... -
The Downregulation of Somatic A-Type K+ Channels Requires the Activation of Synaptic NMDA Receptors in Young Hippocampal Neurons of Rats
Moon-SeokKang, Yoon-SilYang, Seon-HeeKim, Joo-MinPark, Su-YongEun, Sung-CherlJung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2014, Vol.18 No.2 7 135-141 (7 pages)
current modulated by arachidonic acid regulates synaptic integration and threshold for LTP induction in hippocampal pyramidal cells. Proc Natl Acad Sci U S A. 2002;99:10144-10149. 9. Schoppa NE, Westbrook GL. Regulation of synaptic timing in the olfactory bulb by an A-type potassium current. Nat Neu- rosci. 1999;2:1106-1113. 10. Chen X, Yuan LL, Zhao C, Birnbaum SG, Frick A, Jung WE, Schwarz... The downregulation of A-type K+ channels (IA channels) accompanying enhanced somatic excitability can mediate epileptogenic conditions in mammalian central nervous system. As IA channels are domi-nantly targeted by dendritic and postsynaptic processings during synaptic plasticity, it is presumable that they may act as cellular linkers between synaptic responses and somatic processings under various excitable conditions. In the present study, we electrophysiologically tested if the downregulation... -
The electrical and heating properties of copper-incorporated graphite fibers fabricated using different ultrasonication techniques
Kyeong Min Lee, Min-Ji Kim, Hanjoo Jo, Sang Young Yeo, Young-Seak Lee 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 15 111-114 (4 pages)
of copper introduced onto the graphite fber. Therefore, the electrical current of the treated graphite fbers increased at the same applied voltage, and the treated graphite fbers showed improved heating properties. In conclusion, copper was effectively introduced onto graphite fbers with an easy and simple method using tip and bath ultrasonication techniques. The amount of copper on the... Electrical energy can be converted into heat energy through ohmic joule heating. Metallic materials are typically used in electrical heating elements because of their great electrical conductivity. However, metallic materials have several weaknesses, such as corrosion susceptibility, heavy weight, high manufacturing costs, and electromagnetic wave emissions [1,2]. To resolve these problems, carbon materials with good electrical conductivity, such as carbon fibers, graphite fibers, carbon... -
Modifications of mechanical, thermal, and electrical characteristics of epoxy through dispersion of multi-walled carbon nanotubes in supercritical carbon dioxide
MGH ZAIDI, Sanjeev Joshi, Manoj Kumar, Deepak Sharma, Ashwin Kumar, Sarfaraz Alam, Prakash Sah 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.4 4 218-227 (10 pages)
a 6221 current source and an indigenous sample holder with a PID controlled oven provided by Scientifc Instruments, Roorkee, India. Two parallel surfaces of each sample 1 mm apart were polished with silver paint and checked for good electrical conduction. Conduc- tivity of samples was recorded through the four probe method at compliance of 2 V DC at 35 ± 1°C. 2.2.3. Fourier transformed... -
Carbon Doping of TiO2 for Visible Light Photo Catalysis - A review
K. Palanivelu, Ji Sun Im, Young-Seak Lee 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2007, Vol.8 No.3 6 214-224 (11 pages)
eV Photo current generation Shankar et al. 2005 [70] 9. Hydrolysis reaction with TiCl 4and tetrabutyl ammo- nium hydroxide followed by calcinations at 400 oC in air carbon-doped materials consisted of pure anatase modifica- tion (101 reflex, 12.64 o; 200 reflex, 24.02 o-XRD, Diffuse reflectance spectra reveal that the new absorption at 400-700 nm is related to the carbon content, Band gap... -
Prevalence and characteristics of Shiga toxin-producing Escherichia coli (STEC) from cattle in Korea between 2010 and 2011
Eun Kang, Sun Young Hwang, Ka Hee Kwon, Ki Yeon Kim, Jae Hong Kim, Yong Ho Park* 대한수의학회 Journal of Veterinary Science 11 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 3호 5 369-379 (11 pages)
for isolates from Gyeonggi overlapped with those of STEC from other regions. This is because there is vigorous exchange of STEC between Gyeonggi (located in the capital area) and other areas. The current study used two methods to evaluated STEC epidemiology but could not compare the PFGE and MLST findings due to a number of new STs. However, both PFGE and MLST findings can be meaningful for... A total of 156 Shiga-like toxin producing Escherichia coli (STEC) were isolated from fecal samples of Korean native (100/568, 18%) and Holstein dairy cattle (56/524, 11%) in Korea between September 2010 and July 2011. Fifty-two STEC isolates (33%) harbored both of shiga toxin1 (stx1) and shiga toxin2 (stx2) genes encoding enterohemolysin (EhxA) and autoagglutinating adhesion (Saa) were detected by PCR in 83 (53%) and 65 (42%) isolates, respectively. By serotyping, six STEC from native cattle and...