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Zhang CC, Song C, Yang DK, Li ZZ, Wang D, Gao TY, Hu J, Zhang K. [Precise minimally invasive treatment of mandibular fracture in children assisted by digital surgery technology]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:1173-1178. [PMID: 37885191 DOI: 10.3760/cma.j.cn112144-20230912-00156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Objective: To explore the role of digital three-dimensional printing technology and multifunctional board in the treatment of mandibular fracture in children. Methods: From January 2006 to January 2022, 42 children with mandibular fracture were treated by Department of Stomatology, in The First Affiliated Hospital of Bengbu Medical College, including 25 males and 17 females. The patients, aged from 4 to 12 years, with the median age was 10 years old, were divided into observation group (22 cases) and routine group (20 cases) according to the treatment methods. In the observation group, the multifunctional board was made before operation, and the CT data of the children were imported into Mimics software in".dicom"format, and the displaced mandible was virtually reset. The jaw reduction model was made by three-dimensional printing, and the surgical operation was simulated on the reduction model to determine the model and position of the internal fixation device and shape it. During the operation, the fracture was reduced and fixed according to the preoperative design; The conventional group was treated with open reduction and internal fixation of mandibular fracture by traditional methods, and the clinical application value was compared and analyzed through the intraoperative situation, occlusal relationship, and follow-up of the two groups. Results: The total intraoperative bleeding volume [(30.25±4.02) ml] and surgical time [(64.3±9.2) min] in the observation group were significantly lower than those in the conventional group [(35.13±5.69) ml and (84.6±13.9) min, respectively] (F=6.18, P=0.003; F=1.32, P=0.001). The excellent and good rate of occlusal relationship in the observation group [96% (21/22)] was significantly higher than that in the conventional group [85% (17/20)] (F=4.27, P=0.039). The incidence of complications, the observation group, 1 case of poor occlusion, 1 case of postoperative infection; In the routine group, there were 3 cases with poor occlusion, 1 case with nerve injury, 1 case with root injury and 1 case with tooth germ injury. Conclusions: The application of digitization three-dimensional printing technology combined with multifunctional occlusal plate in children's mandibular fracture is minimally invasive, safe, efficient and accurate, and the clinical effect is good.
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Affiliation(s)
- C C Zhang
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College Stomatology, Bengbu 233000, China
| | - C Song
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College Stomatology, Bengbu 233000, China
| | - D K Yang
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College Stomatology, Bengbu 233000, China
| | - Z Z Li
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College Stomatology, Bengbu 233000, China
| | - D Wang
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College Stomatology, Bengbu 233000, China
| | - T Y Gao
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College Stomatology, Bengbu 233000, China
| | - J Hu
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College Stomatology, Bengbu 233000, China
| | - K Zhang
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College Stomatology, Bengbu 233000, China
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Yang DK, Liao LY, Li YH, Zhong GQ, Zhang XJ, Zhang W, Hao BL, Hu LQ, Wan BN, Hu ZM, Zhang YM, Gorini G, Nocente M, Tardocchi M, Li XQ, Xiao CJ, Fan TS. Simulations of neutral beam injection and ion cyclotron resonance heating synergy in high power EAST scenarios. Rev Sci Instrum 2022; 93:113501. [PMID: 36461431 DOI: 10.1063/5.0101645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/28/2022] [Indexed: 06/17/2023]
Abstract
The EAST plasmas heated with deuterium neutral beam injection and ion cyclotron resonance heating (ICRH) have been simulated by the TRANSP code. The analysis has been conducted using the full wave solver TORIC5, the radio frequency (RF)-kick operator, and NUBEAM to model the RF heating effects on fast ion velocity distribution. In this work, we present several simulated results compared with experiments for high power EAST scenarios, indicating that the interactions between ICRH and fast ions can significantly accelerate fast ions, which are confirmed by the increased neutron yield and broadened neutron emission spectrum measurements.
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Affiliation(s)
- D K Yang
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - L Y Liao
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - Y H Li
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - G Q Zhong
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - X J Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - W Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - B L Hao
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - Z M Hu
- Interdisciplinary InnoCentre for Nuclear Technology, Nanjing University, Nanjing 211106, Jiangsu, China
| | - Y M Zhang
- China Academy of Engineering Physics, Mianyang 621900, Sichuan, China
| | - G Gorini
- Dipartimento di Fisica "G. Occhialini," Università degli Studi di Milano-Bicocca, Milano 20126, Italy
| | - M Nocente
- Dipartimento di Fisica "G. Occhialini," Università degli Studi di Milano-Bicocca, Milano 20126, Italy
| | - M Tardocchi
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - X Q Li
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - C J Xiao
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - T S Fan
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
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Yang DK, Zhang YM, Xiao M, Hu ZM, Liao LY, Sun JQ, Zhong GQ, Hu LQ, Wan BN, Gorini G, Nocente M, Tardocchi M, Xiao CJ, Fan TS. Neutron emission and fast ion simulation for high performance long pulses at EAST. Rev Sci Instrum 2021; 92:043552. [PMID: 34243473 DOI: 10.1063/5.0043797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/05/2021] [Indexed: 06/13/2023]
Abstract
Neutron emission spectroscopy and neutron yield measurements are important for high neutral beam injection (NBI) power heating at the Experimental Advanced Superconducting Tokamak (EAST). The neutron yields mainly depend on the deposition from NBI to the deuterium plasmas in the EAST. We have recently used TRANSP with time dependent diagnostic results to simulate the transport process of 30 s long pulse deuterium plasma discharges in the EAST, obtaining the time dependent fast ion distribution, neutron emission spectrum, and total neutron emission rate. Combined with the time trace of the result measured by a standard 235U fission chamber, the effects of different configurations of NBI heating in EAST fusion plasmas have been evaluated.
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Affiliation(s)
- D K Yang
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - Y M Zhang
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - M Xiao
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - Z M Hu
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - L Y Liao
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - J Q Sun
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - G Q Zhong
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - G Gorini
- Dipartimento di Fisica 'G. Occhialini', Università degli Studi di Milano-Bicocca, Milano 20126, Italy
| | - M Nocente
- Dipartimento di Fisica 'G. Occhialini', Università degli Studi di Milano-Bicocca, Milano 20126, Italy
| | - M Tardocchi
- Institute for Plasma Science and Technology, National Research Council, Milan 20125, Italy
| | - C J Xiao
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - T S Fan
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
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Liao LY, Zhang YM, Hu ZM, Yang DK, Ge LJ, Sun JQ, Zhong GQ, Hu LQ, Wan BN, Gorini G, Nocente M, Tardocchi M, Li XQ, Fan TS. A compact stilbene crystal neutron spectrometer for NBI-heated plasma neutron diagnostics at EAST. Rev Sci Instrum 2021; 92:043506. [PMID: 34243369 DOI: 10.1063/5.0043617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/11/2021] [Indexed: 06/13/2023]
Abstract
Stilbene crystal detectors are widely used as fast neutron measurement tools based on recoil proton detection, such as liquid scintillators. A compact stilbene crystal neutron spectrometer (CSCNS) has been installed at the Experimental Advanced Superconducting Tokamak (EAST) to obtain information on fuel ions produced in the plasma core because of its merits of good n/γ discrimination capability, high detection efficiency, and fast response. For the first time, CSCNS has been used for neutron emission spectroscopy measurements in EAST plasmas with neutral beam injection (NBI) heating. The CSCNS has the same horizontal line of sight as the time-of-flight enhanced diagnostics neutron spectrometer. Under NBI heating scenarios, the time trace of the neutron yield monitored by the CSCNS is similar to the one monitored by a standard 235U fission chamber. The experimental pulse height spectra are also similar to the simulated ones generated by folding the simulated neutron energy spectrum with the detector response functions. These results demonstrate the capability of the CSCNS for neutron diagnostics and the study of fast-ion physics in EAST.
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Affiliation(s)
- L Y Liao
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y M Zhang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Z M Hu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - D K Yang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - L J Ge
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - J Q Sun
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - G Q Zhong
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - G Gorini
- Dipartimento di Fisica "G. Occhialini," Università degli Studi di Milano-Bicocca, Milano 20126, Italy
| | - M Nocente
- Dipartimento di Fisica "G. Occhialini," Università degli Studi di Milano-Bicocca, Milano 20126, Italy
| | - M Tardocchi
- Dipartimento di Fisica "G. Occhialini," Università degli Studi di Milano-Bicocca, Milano 20126, Italy
| | - X Q Li
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - T S Fan
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
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Gu Y, Jiang L, Miao JH, Liang TS, Kan QC, Yang DK. Clinical effects of thermotherapy in combination with intracavitary infusion of traditional Chinese medicine in the treatment of malignant pleural effusion. J BIOL REG HOMEOS AG 2016; 30:1023-1028. [PMID: 28078848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Malignant fluid, a commonly seen tumor associated complication, mainly includes peritoneal effusion, malignant pleural effusion and pericardial effusion. It can produce huge negative influence on the quality of life of patients and even lead to death. Treatment of malignant effusion is one of the effective measures for improving life expectancy of patients. To evaluate the effect of thermotherapy in combination with intracavitary infusion of Kangai injection in treating malignant pleural effusion, 195 patients who received treatment from April 2010 to October 2014 in the First Affiliated Hospital of Zhengzhou University were selected and divided into an observation group and two control groups (group A and B). The observation group was treated by thermotherapy in combination with intracavitary infusion of kangai injection. Control group A was treated by intracavitary infusion of kangai injection and control group B was treated by hyperthermal perfusion in combination with intracavity chemotherapy. Clinical effects, quality of life, treatment safety and untoward reactions were compared between the groups. It was found that differences of WBC, RBC and PLT levels before and after treatment had no statistical significance comparisons within group and comparisons between groups (P>0.05); hepatic and renal functions of the groups had no remarkable difference before or after treatment (P>0.05). The clinical effect of the observation group was superior to that of control groups A and B (P less than 0.05); the Karnofsky performance status (KPS) score of the observation group was much higher than that of control groups A and B (79.34±10.58 vs 71.11±9.64), but the difference of the ZPS score between groups had no statistical significance (P>0.05). It can be concluded that thermotherapy in combination with intracavitary infusion of traditional Chinese medicine can be safely applied as it has positive effects and remarkably improves quality of life, therefore it is clinically worth promoting.
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Affiliation(s)
- Y Gu
- Radiotherapy Ward III, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Jiang
- Radiotherapy Ward II, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - J H Miao
- Integrated Medical Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - T S Liang
- Radiotherapy Ward III, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Q C Kan
- Deans Office, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - D K Yang
- Compositive Thermotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Yang DK, Liang HJ, Gao HL, Wang XW, Wang Y. Analysis of drug-resistant gene detection of blaOXA-like genes from Acinetobacter baumannii. Genet Mol Res 2015; 14:18999-9004. [PMID: 26782550 DOI: 10.4238/2015.december.29.7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Our study determines the resistance gene profile of a set of Acinetobacter baumannii hospital isolates. A. baumannii is responsible for nosocomial outbreaks and sporadic infections. We extracted and PCR amplified bacterial DNA isolated from patients with ages below 60 years (23.36%) and above 60 years (76.64%). Most of the patients were admitted in the ICU (36.13%) and pneumology departments (28.47%). Of 164 isolated strains, 16 (9.75%) contained OXA-51, 8 (4.88%) contained OXA-58, and 140 (85.37%) contained both OXA-51 and OXA-23. Additionally, 8 (7.41%) strains containing OXA-58 and 100 (92.59%) strains containing both OXA-51 and OXA-23 showed multidrug-resistance. Drug resistance rates of A. baumannii to amikacin, tobramycin-levofloxacin, and cotrimoxazole were above 90%, while drug resistance rates to ampicillin, cefotetan, cefazolin, cefoperazone, and nitrofurantoin were 100%. In conclusion, we found that isolated strains containing OXA-51 and OXA-23 were more likely to be resistant or have decreased sensitivity to carbapenems.
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Affiliation(s)
- D K Yang
- Department of Infections, The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
| | - H J Liang
- Department of Infections, The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
| | - H L Gao
- Department of Infections, The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
| | - X W Wang
- Department of Infections, The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
| | - Y Wang
- Department of Infections, The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
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Gu Y, Yang DK, Spinas E, Kritas SK, Saggini A, Caraffa A, Antinolfi P, Saggini R, Conti P. Role of TNF in mast cell neuroinflammation and pain. J BIOL REG HOMEOS AG 2015; 29:787-791. [PMID: 26753638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Inflammatory mediators, such as cytokines, chemokines and arachidonic acid compounds, lead to vascular permeability and dilation and increase sensitization and pain receptors. Proinflammatory cytokines, including tumor necrosis factor, are involved in the etiology of clinical neurological disorders. These cytokines activate nuclear factor-κB (NF-κB) which leads to the activation of different inflammatory genes. TNF implicated in neurological disorders has an important role in the activation of microglia and astrocytes. The inhibition of TNF may lead to the decrease of microglia activation and can be useful for therapeutic intervention. TNF, at the site of nerve injury may activate mast cells (MCs) which mediate pathologic events such as headache and pain. TNF is the only cytokine stored in mast cells and can be rapidly released along with biogenic amines after MC stimulation. Activation of MCs leads to NF-κB and AP1 generation with release of many cytokines including TNF, IL-33 and IL-1. In this paper we discuss the role of TNF in MC activation, mediating pain and neurological disorders.
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Affiliation(s)
- Y Gu
- Radiotherapy Ward 3, The First Affiliated Hospital of Zhengzhou, Zhengzhou, Henan, China
| | - D K Yang
- Compositive Thermotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - E Spinas
- Department of Surgery and dontostomatological Sciences, University of Cagliari, Italy
| | - S K Kritas
- Department of Microbiology and Infectious Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, Macedonia, Greece
| | - A Saggini
- Department of Dermatology, University of Rome Tor Vergata, Rome, Italy
| | - A Caraffa
- Orthopedic Division, University of Perugia, Perugia, Italy
| | - P Antinolfi
- Orthopedic Division, University of Perugia, Perugia, Italy
| | - R Saggini
- Department of Neurosciences and Imaging, Faculty of Medicine and Surgery, G. DAnnunzio University Chieti-Pescara, Chieti, Italy
| | - P Conti
- Immunology Division, Post Graduate School of Medicine, Chieti, Italy
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Son CH, Lee CU, Roh MS, Lee SK, Kim KH, Yang DK. Acute generalized exanthematous pustulosis as a manifestation of carbamazepine hypersensitivity syndrome. J Investig Allergol Clin Immunol 2008; 18:461-464. [PMID: 19123438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
Anticonvulsant hypersensitivity syndrome (AHS) is a multisystemic disorder involving cutaneous changes and typical blood abnormalities that can be triggered by aromatic anticonvulsant drugs.The syndrome is commonly associated with a macular or papular rash or erythroderma. Acute generalized exanthematous pustulosis is a very rare cutaneous manifestation of AHS. A 41-year-old man was referred to our hospital for evaluation of a 3-day history of fever, leukocytosis, and generalized skin eruption. The patient had been taking carbamazepine for 1 month to treat hand tremor following surgery for intracerebral hemorrhage. Physical examination revealed facial edema and a large number of variable-sized pustules covering the body. Initial laboratory testing showed peripheral blood eosinophilia and abnormal liver function.A biopsy of pustular lesions revealed intraepidermal pustules, with perivascular lymphocytic infiltration. The skin lesions and laboratory results improved after withdrawal of carbamazepine and treatment with oral corticosteroids.
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Affiliation(s)
- C H Son
- Department of Internal Medicine, College of Medicine, Dong-A University, Busan, Republic of Korea
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Son CH, Kim HI, Kim KN, Lee KN, Lee CU, Roh MS, Kim KH, Yang DK, Lee SK. Moxifloxacin-associated drug hypersensitivity syndrome with drug-induced hypersensitivity pneumonitis. J Investig Allergol Clin Immunol 2008; 18:72-73. [PMID: 18361108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Affiliation(s)
- C H Son
- Department of Internal Medicine, College of Medicine, Dong-A University, Busan, Korea
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Abstract
Relaxation of the corpus cavernosum smooth muscle is an absolute prerequisite for penile erection. Potassium channels play a role in the physiologic regulation of corporal smooth muscle tone. In spite of the physiological importance of K(ATP) channel in the modulation of corporal smooth muscle tone, there is a shortage of information available about the K(ATP) channel subtype(s) present in the corporal smooth muscle. The purpose of this study was to investigate the subunit type of K(ATP) channel, that is, the combinations of the Kir subunit and the SUR subunit in the human corporal smooth muscle and determine whether the electrophysiological kinetics and pharmacological properties of K(ATP) channels meet the subunit characteristics of the ion channel. We used cultured human corporal smooth muscle cells. To determine the presence of Kir and SURs subunits, RT-PCR was performed using Kir6.1, Kir6.2, SUR1, SUR2A, and SUR2B gene-specific primers. For electrophysiological recordings, the whole-cell, inside-out, and cell-attached configurations of the patch-clamp technique were used. We observed transcripts for Kir6.1, Kir6.2, and SUR2B in mRNA isolated from smooth muscle cells of cultured human corpus carvernosum. We recorded the unitary K(ATP) channel under the condition of intracellular and extracellular 140 mM [K(+)], and the slope conductance of the channel was 42.0+/-2.6 pS which is an intermediate conductance between that of either Kir6.1 or Kir6.2. The pinacidil (10 microM) increased the magnitude of the outward K(+) current (214.6+/-89.2%, n=12, < or = 0.05), which was blocked by the subsequent addition of the specific K(ATP) channel subtype selective blocker, glibenclamide (10 microM). The SIN-1(200 microM) induced increases in whole-cell outward K(+) currents (126.0+/-1.4%, n=4). The increased currents by SIN-1 were inhibited by glibenclamide (10 microM). We are the first to show that K(ATP) channel in human corporal smooth muscle is composed of Kir6.1-Kir6.2 construct expressed with SUR2B by RT-PCR. These findings, taken together with the electrophysiological results, suggest that K(ATP) channel in corporal smooth muscle cells is composed of heteromultimers of Kir6.1 and Kir6.2 with the ratio of 3 : 1 or 4 : 0 and SUR2B.
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Affiliation(s)
- S O Insuk
- Department of Physiology and Biophysics, Seoul National University College of Medicine, Seoul, Korea
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Yang DK, Koros WJ, Hopfenberg HB, Stannett VT. The effects of morphology and hygrothermal aging on water sorption and transport in Kapton® polyimide. J Appl Polym Sci 2003. [DOI: 10.1002/app.1986.070310608] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ma RQ, Yang DK. Freedericksz transition in polymer-stabilized nematic liquid crystals. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 2000; 61:1567-1573. [PMID: 11046438 DOI: 10.1103/physreve.61.1567] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/1999] [Indexed: 05/23/2023]
Abstract
We have constructed polymer-stabilized nematic liquid crystals by photopolymerizing diacrylate monomers in the nematic phase. The orientation of the liquid crystal was controlled by the polymer network. We studied the Freedericksz transition in these systems. Experimentally we studied the transition by measuring the capacitance of the liquid crystal cells as a function of applied voltage. The transition was affected profoundly by the dispersed polymer network. The threshold was higher with shorter interpolymer network distance. Theoretically we studied the systems using a two-dimensional model in which the polymer networks were represented by parallel cylinders with random location. The interaction between the liquid crystal and the polymer network was described by the boundary condition imposed by the polymer network. By fitting the experimental data, we found that the polymer cylinders had diameters of a few submicrons, and a substantial amount of liquid crystal was trapped inside the cylinders.
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Affiliation(s)
- RQ Ma
- Liquid Crystal Institute and Chemical Physics Program, Kent State University, Kent, Ohio 44242, USA
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Zhang JX, Yang DK. [Nursing care of multiple wounded in earthquakes]. Zhonghua Hu Li Za Zhi 1997; 32:201-2. [PMID: 9325736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Crawford GP, Yang DK, Zumer S, Finotello D, Doane JW. Ordering and self-diffusion in the first molecular layer at a liquid-crystal-polymer interface. Phys Rev Lett 1991; 66:723-726. [PMID: 10043884 DOI: 10.1103/physrevlett.66.723] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Yang DK, Crooker PP, Tanimoto K. Reflectivity of surface-aligned blue phase III of chiral liquid crystals. Phys Rev Lett 1988; 61:2685-2688. [PMID: 10039196 DOI: 10.1103/physrevlett.61.2685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Kook YJ, Kim KK, Yang DK, Ahn DS, Choi BK. Mechanism of renal effects of intracerebroventricular histamine in rabbits. Arch Int Pharmacodyn Ther 1988; 291:280-95. [PMID: 3365067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Histamine, when given intracerebroventricularly (i.c.v.), has been reported to produce antidiuresis in the rabbit. In this study it was attempted to elucidate the mechanism involved in the effect. Histamine (H), 100 micrograms/kg i.c.v., produced antidiuresis with decreases in renal plasma flow and glomerular filtration rate in urethane-anesthetized rabbits. With larger doses, a tendency towards increased electrolyte excretion was noted in spite of decreased filtration. In the denervated kidney, marked diuresis and natriuresis were observed following i.c.v. H, whereas the contralateral innervated kidney responded with typical antidiuresis. Reserpinized rabbits also responded with marked natriuresis to i.c.v. H. Diphenhydramine (D), 250 micrograms/kg i.c.v., increased urine flow rate, sodium and potassium excretion, along with increase in renal perfusion. With 750 micrograms/kg i.c.v., marked natriuresis was observed in spite of decreased filtration. When H was given after D (250 micrograms/kg) the antidiuresis was completely abolished, and diuresis became more prominent. Cimetidine, 250 micrograms/kg i.c.v., elicited antidiuresis with decreases in renal hemodynamics, the pretreatment with cimetidine did not influence the antidiuresis by H and no natriuresis was noted. The present study suggests that histamine, given i.c.v., influences renal function in dual ways, i.e., antidiuresis by increasing the sympathetic tone to the kidney and diuresis due to some humoral natriuretic factor, the latter becoming apparent only when the former influence has been removed, and further suggests that H1-receptors might be involved in the nerve-mediated antidiuresis, whereas H2-receptors might mediate the humorally induced natriuresis and diuresis.
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Affiliation(s)
- Y J Kook
- Department of Pharmacology, Chonnam University Medical School, Kwangju, Korea
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Miller JD, Battle PR, Collings PJ, Yang DK, Crooker PP. Temperature-concentration phase diagram for the blue phases of a highly chiral liquid crystal. Phys Rev A Gen Phys 1987; 35:3959-3960. [PMID: 9898627 DOI: 10.1103/physreva.35.3959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Uragami T, Hopfenberg HB, Koros WJ, Yang DK, Stannett VT, Chern RT. Dual-mode analysis of subatomspheric-pressure CO2 sorption and transport in Kapton H polyimide film. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/polb.1986.090240405] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Rhee WS, Kim KS, Yang DK. [The effects of sclerosing agents on rabbit mental nerves and surrounding tissues]. Taehan Chikkwa Uisa Hyophoe Chi 1976; 14:157-65. [PMID: 1072251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Yang DK. [Study for medicinal penetration in dental tissue (author's transl)]. Taehan Chikkwa Uisa Hyophoe Chi 1973; 11:271-6. [PMID: 4143519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Yang DK, Kim SN. [Statistical studies of primary causes of tooth extraction due to inflammatory disease]. Taehan Chikkwa Uisa Hyophoe Chi 1971; 9:427-30. [PMID: 5287224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Yang DK, Kim SN. [Causes of tooth mortality]. Taehan Chikkwa Uisa Hyophoe Chi 1971; 9:448-50. [PMID: 5287227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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