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Gardner JP, Cho JH, Skurnick JH, Awad G, Gutkin M, Byrd LH, Lasker N, Aviv A. Blood pressure inversely correlates with thrombin-evoked calcium rise in platelets. Hypertension 1994; 23:703-9. [PMID: 8206566 DOI: 10.1161/01.hyp.23.6.703] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Earlier investigations showed a positive correlation between basal cytosolic free calcium in human platelets and blood pressure; however, recent studies have failed to show this relation. We undertook the present work to examine which platelet cytosolic calcium parameters (namely, cytosolic calcium in resting or stimulated states in calcium-containing and calcium-free media) present the least variability and best correlation with blood pressure. We studied 17 healthy white men on three different occasions separated by 1- and 4-week intervals. Their manual and ambulatory automated 24-hour blood pressure measurements were correlated with cytosolic calcium in resting and stimulated (thrombin-treated) fura 2-loaded platelets. The following cytosolic calcium parameters were measured in 1 mmol/L calcium and calcium-free media: basal cytosolic calcium, peak thrombin-evoked cytosolic calcium, and post-transient cytosolic calcium 5 minutes after thrombin treatment. The highest and lowest coefficients of variation were respectively shown by the basal cytosolic calcium (22.8%) and peak thrombin-evoked cytosolic calcium (10.1%) in calcium medium. Basal cytosolic calcium did not correlate with any of the blood pressure parameters. Of the cytosolic calcium parameters, peak thrombin-evoked cytosolic calcium in calcium medium demonstrated consistent (negative) correlations with blood pressure, with better correlations shown with diastolic than systolic blood pressure of both automated and manual blood pressure readings. Peak thrombin-evoked cytosolic calcium in calcium medium showed similar correlations with nighttime and daytime automated blood pressure measurements. There were no correlations between peak thrombin-evoked cytosolic calcium in calcium-free medium and blood pressure.(ABSTRACT TRUNCATED AT 250 WORDS)
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252
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Cho JH, Kang MH. Atomic structure of the Ge/Si(100)-(2 x 1) surface. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:13670-13673. [PMID: 10010308 DOI: 10.1103/physrevb.49.13670] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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253
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Cho JH, Kang MH. Pseudopotential study of the magnetic and metal-insulator transitions in metallic lithium. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:9555-9559. [PMID: 10009753 DOI: 10.1103/physrevb.49.9555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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254
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Kimura M, Cho JH, Lasker N, Aviv A. Differences in platelet calcium regulation between African Americans and Caucasians: implications for the predisposition of African Americans to essential hypertension. J Hypertens 1994; 12:199-207. [PMID: 8021471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To study differences in cytosolic free calcium regulation between African Americans and Caucasians, using platelets as a model for studying cellular physiology. DESIGN Platelet calcium regulation in apparently healthy African American and Caucasian males was examined. METHODS Using fura-2, calcium influx and cytosolic calcium extrusion were monitored after treatment with thapsigargin, an inhibitor of the Ca-ATPase in the dense tubular membrane system. RESULTS Compared with Caucasians, platelets from African Americans demonstrated a higher calcium influx into the cytosol (from the external medium and dense tubular membrane system), as well as enhanced calcium extrusion from the cytosol. CONCLUSIONS Such findings indicate that platelets from African Americans have increased intracellular calcium stores or increased cellular calcium turnover, or both. If these racial differences involve other cells, such as vascular smooth muscle cells, they could underlie the predisposition of African Americans to essential hypertension.
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255
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Cho JH, Noguchi M, Ochiai A, Uchino S, Hirohashi S. Analysis of regional differences of p53 mutation in advanced gastric carcinoma: relation to heterogeneous differentiation and invasiveness. Mod Pathol 1994; 7:205-11. [PMID: 8008744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In order to examine the correlation of p53 mutation with heterogeneous histological differentiation and invasiveness of gastric carcinoma, we analyzed 46 areas (three to six per case) that were different histologically and anatomically in 12 advanced gastric carcinomas, shown previously to be positive for p53 mutation, using immunohistochemical, polymerase chain reaction-single strand conformation polymorphism, and direct DNA sequencing analyses. DNA derived from different sites in nine cases had the same pattern of p53 mutation, even in cases manifesting heterogeneous histology within a single tumor. Site difference of the p53 mutation was found in three cases: two showed no mutation in superficial tumor areas but presence of mutation in deep-infiltrating areas. In contrast, one case contained a mutation in the superficial area but not in the deep-infiltrating area. These results suggest that in most cases, tumor cells forming a single advanced gastric carcinoma, even though they may present a heterogeneous histology and deep invasion, seem to be derived from the same cellular clone.
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256
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Oh CH, Cho JH. Studies on the synthesis and antibacterial activity of new zwitterionic carbapenems. J Antibiot (Tokyo) 1994; 47:126-8. [PMID: 8119856 DOI: 10.7164/antibiotics.47.126] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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257
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Chou FC, Borsa F, Cho JH, Johnston DC, Lascialfari A, Torgeson DR, Ziolo J. Magnetic phase diagram of lightly doped La2-xSrxCuO4 from 139La nuclear quadrupole resonance. PHYSICAL REVIEW LETTERS 1993; 71:2323-2326. [PMID: 10054644 DOI: 10.1103/physrevlett.71.2323] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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258
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Kogan VG, Ledvij M, Simonov AY, Cho JH, Johnston DC. Role of vortex fluctuations in determining superconducting parameters from magnetization data for layered superconductors. PHYSICAL REVIEW LETTERS 1993; 70:1870-1873. [PMID: 10053407 DOI: 10.1103/physrevlett.70.1870] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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259
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Cho JH, Kang MH. Bulk structural properties of Mo: Plane-wave-basis pseudopotential study with a partial-core-correction scheme. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:2979-2982. [PMID: 10006373 DOI: 10.1103/physrevb.47.2979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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260
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Cho JH, Chou FC, Johnston DC. Phase Separation and Finite Size Scaling in La2-xSrxCuO4+ delta. PHYSICAL REVIEW LETTERS 1993; 70:222-225. [PMID: 10053733 DOI: 10.1103/physrevlett.70.222] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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261
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Abstract
We report a primary choriocarcinoma of the urinary bladder in a 63-year-old man who presented with painless hematuria. He was diagnosed as having an invasive carcinoma and underwent a total cystectomy. The tumor was diffusely hemorrhagic and occupied the dome of the bladder. Histologically, it consisted of cyto-and syncytiotrophoblasts with extensive hemorrhage. No coexisting transitional cell carcinoma component was present. By immunohistochemistry, the tumor expressed beta-hCG and low-molecular weight cytokeratin intensely while it was negative for CEA or EMA. The post-cystectomy serum beta-hCG was 237mlU/ml, and decreased later. The pertinent literature is reviewed and diagnostic criteria are discussed.
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262
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Zentay Z, Reddi A, Raguwanshi M, Gardner JP, Cho JH, Lasker N, Dasmahapatra A, Aviv A. Platelet sodium-hydrogen antiport in obese and diabetic black women. Hypertension 1992; 20:549-54. [PMID: 1328048 DOI: 10.1161/01.hyp.20.4.549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this investigation we correlated platelet Na-H antiport parameters with blood pressure and serum lipids in a sample population of non-insulin-dependent diabetic obese, nondiabetic obese, and nondiabetic nonobese black women. Parameters of the Na-H antiport were examined in aspirin-treated platelets. These parameters were not altered in resting or in thrombin-stimulated platelets of diabetic patients. The activity index of platelet Na-H antiport after thrombin stimulation was positively correlated with the blood pressure (systolic blood pressure, r = 0.5320 and p = 0.0001; diastolic blood pressure, r = 0.5123 and p = 0.0017). Lower high density lipoprotein cholesterol levels were associated with an alkaline shift in the cytosolic pH set point for activation of the Na-H antiport. Highly significant correlations were also observed between the total cholesterol/high density lipoprotein cholesterol ratio and the cytosolic pH set point for activation of the Na-H antiport. These correlations were independent of diabetes or the body mass index. Together, these observations indicate that parameters of platelet Na-H antiport are altered with an increase in blood pressure and a decrease in serum high density lipoprotein cholesterol.
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263
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Cho JH, Hao Z, Johnston DC. Magnetization scaling of single-crystal Bi2Sr2CaCu2O8 below Tc. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:8679-8682. [PMID: 10002652 DOI: 10.1103/physrevb.46.8679] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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264
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Cho JH, Borsa F, Johnston DC, Torgeson DR. Spin dynamics in La2-xSrxCuO4 (0.02 <= x <= 0.08) from 139La NQR relaxation: Fluctuations in a finite-length-scale system. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:3179-3182. [PMID: 10004028 DOI: 10.1103/physrevb.46.3179] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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265
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Kim JS, Cho JH. Progressive atypical peripheral neuropathy following nephrectomy in a patient with renal cell carcinoma. J Korean Med Sci 1992; 7:167-9. [PMID: 1326285 PMCID: PMC3053818 DOI: 10.3346/jkms.1992.7.2.167] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Peripheral neuropathy or amyotropic lateral sclerosis can be associated with renal cell carcinoma. We report a 63-year-old male patient with renal cell carcinoma who developed an atypical, progressive neuropathy after nephrectomy.
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266
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Abstract
Cytogenetic analysis of 4 cases of meningiomas from 3 male and 1 female patients is reported. One of male patients suffered from neurofibromatosis type 2. Histologically, the meningiomas were meningotheliomatous (1), transitional (2), and psammomatous (1). Chromosomal abnormalities were found in all cases with a karyotype 45,XY,-22, 45,XY,-16, 45,XX,-2, and 45,XY,t (15p;22q), respectively. Monosomy of chromosome 22 was detected only in the patient with neurofibromatosis type 2. These cytogenetic analysis demonstrates that variable clonal karyotype aberrations exist in meningiomas.
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267
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Kodama K, Ushida N, Mokhtarani A, Paolone VS, Volk JT, Wilcox JO, Yager PM, Edelstein RM, Freyberger AP, Gibaut DB, Lipton RJ, Nichols WR, Potter DM, Russ JS, Zhang Y, Jang HI, Kim JY, Lim IT, Pac MY, Baller BR, Stefanski RJ, Nakazawa K, Tasaka S, Choi YS, Chung KH, Kim DC, Park IG, Song JS, Yoon CS, Chikawa M, Abe T, Fujii T, Fujioka G, Fujiwara K, Fukushima H, Hara T, Takahashi Y, Taruma K, Tsuzuki Y, Yokoyama C, Chang SD, Cheon BG, Cho JH, Kang JS, Kim CO, Kim KY, Kim TY, Lee JC, Lee SB, Lim GY, Nam SW, Shin TS, Sim KS, Woo JK, Isokane Y, Tsuneoka Y, Aoki S, Gauthier A, Hoshino K, Kitamura H, Kobayashi M, Miyanishi M, Nakamura K, Nakamura M. Measurement of the relative branching fraction Gamma (D0-->K micro nu )/ Gamma (D0--> microX). PHYSICAL REVIEW LETTERS 1991; 66:1819-1822. [PMID: 10043318 DOI: 10.1103/physrevlett.66.1819] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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268
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Bahk SY, Chang SD, Cheon BG, Cho JH, Jang HI, Hahn CH, Hara T, Lim GY, Kang JS, Kim CO, Kim JY, Kim KY, Kim SN, Kim TI, Kim TY, Koo DG, Lee SB, Lim IT, Moon KH, Nam SW, Pac MY, Park IG, Park JN, Ryu JY, Shin TS, Sim KS, Song JS, Woo JK, Yokoyama C, Yoon CS. Diffractive excitation of 14.6-, 60-, and 200-GeV/nucleon 16O and 14.6-GeV/nucleon 28Si nuclei in nuclear emulsion. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1991; 43:1410-1419. [PMID: 9967181 DOI: 10.1103/physrevc.43.1410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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269
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Sun K, Cho JH, Chou FC, Lee WC, Miller LL, Johnston DC, Hidaka Y, Murakami T. Heat capacity of single-crystal La2CuO4 and polycrystalline La2-xSrxCuO4 (0 <= x <= 0.20) from 110 to 600 K. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:239-246. [PMID: 9996208 DOI: 10.1103/physrevb.43.239] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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270
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Johnston DC, Cho JH. Magnetic-susceptibility anisotropy of single-crystal Bi2Sr2CaCu2O8. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:8710-8713. [PMID: 9995070 DOI: 10.1103/physrevb.42.8710] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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271
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Chou FC, Cho JH, Miller LL, Johnston DC. New phases induced by hydrogen reduction and by subsequent oxidation of L2CuO4 (L=La,Pr,Nd,Sm,Eu,Gd). PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:6172-6180. [PMID: 9994694 DOI: 10.1103/physrevb.42.6172] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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272
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Lee ML, Cho JH. [Development of a scale to measure the self concept of cesarean section mothers]. KANHO HAKHOE CHI [THE JOURNAL OF NURSES ACADEMIC SOCIETY] 1990; 20:131-41. [PMID: 2232439 DOI: 10.4040/jnas.1990.20.2.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Recently, the rate of cesarean section in Korea has been increasing. The results of several previous studies in foreign countries on the emotional responses of cesarean section mothers showed that they might experience difficulties in the mother-infant interaction due to fatigue, lack of early mother-infant interaction, disappointments, anger, feelings of loss of control, and other factors. Human behavior is said to be determined by one's self concept, and self concept is influenced by both internal and external environmental factors. A scale to measure the self concept of cesarean section mothers was needed in order to identify those who might have difficulties in the mother-infant interactions in future. The purposes of this study were to develop a measuring scale, and to test its reliability and validity. The process of this study was as follows. A structured interview was done with 50 cesarean section and vaginal delivery mothers to find their state of emotional reaction after giving birth to their babies. Based on the results of the interviews, a 50 items Likert scale was developed. The self concept of 268 cesarean section and vaginal delivery mothers who were hospitalized at six hospital in seoul were measured, during the period between Feb. 1 and April 30. Reviewing the discriminating power of each item by means of crosstabulation, ten items were selected for the final scale. The reliability and validity of this ten item scale were tested by Cronbach's alpha and t-test, using spss pc + package. The results of this study and recommendation are as follows. 1. The ten selected items were as follows. I feel pains in my breast. (-) I have a good appetite now. (+) I feel pains in my flank. (-) I feel fine now. (+) My body seems to have returned to its prepregnant state. (+) Thinking of the delivery process, I feel sorry. (-) I want to hold my baby in my arms. (+) I want to keep my own life, even if I became a mother. (-) I want to delegate the care of the baby to my mother/mother in law. (-) I think baby is my alter ege. (+) 2. The reliability of this scale was tested by Cronbach's alpha, and the coefficient of this scale was .8066. 3. The construct validity of this scale was tested by means of known group methods. The value of self concept for cesarean section mother was significantly lower than for vaginal delivery mothers (t = -5.51, df = 266, p = 0.007).(ABSTRACT TRUNCATED AT 400 WORDS)
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273
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Vang MS, Cho JH. [A study on the mechanical behaviors of abutment teeth with various coping designs under overdenture]. TAEHAN CH'IKKWA UISA HYOPHOE CHI 1990; 28:363-77. [PMID: 2130132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
An overdenture is a complete denture supported by both soft tissue and a few remaining natural teeth. The purpose of this study was to analyze the stress distribution of the teeth and supporting structures when various type of coping under overdenture was applied. The analysis was conducted by using the finite element method and changing the condition such as the direction of the load, the shape of coping on the abutment: The model included overdenture copings, abutment tooth and supporting structures. The results of analysis were as follows: 1. The short dome coping showed well distribution of stress. 2. The dome shaped design produced higher stress distribution than square and inclined plane design. 3. As the height of copings on the abutment was increased, the displacements increased. 4. The magnitude and direction of the abutment displacements were influenced by the direction of load application.
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Abstract
A case of aneurysmal ("angiomatoid") fibrous histiocytoma (AFH) in a 12-year-old girl is presented with its unusual clinicopathologic features. The lesion had the full microscopic characteristics of AFH described in prior reports, but it also had some features that differed from the original description of the disorder, such as the involvement of subcutis, its occurrence in the scalp, and a documented history of minor trauma. The lesion clinically resembled the gross features of hemangioma. The experience in the present case raises the need for considering AFH as one of major differential diagnosis of nodular cutaneous tumors in children that simulate malignancy such as angiomatoid malignant fibrous histiocytoma and Kaposi's sarcoma.
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275
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Kim CJ, Cho JH, Chi JG, Kim YJ. Multiple rhabdomyoma of the heart presenting with a congenital supraventricular tachycardia--report of case with ultrastructural study. J Korean Med Sci 1989; 4:143-7. [PMID: 2631748 PMCID: PMC3053698 DOI: 10.3346/jkms.1989.4.3.143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
A case of congenital rhabdomyoma of the heart in a 5-month-old Korean infant is described. The patient presented with a congenital supraventricular tachyarrhymia that was detected in utero by fetal sonography. The tumor was multiple, but no obvious association with tuberous sclerosis complex was demonstrated. Microscopic examination revealed classic "spider cells" with rich glycogen content. Ultrastructurally, the cells contained numerous leptofibrils, clumped Z band material, and desmosome-like cell junctions. The case is a second documented case of cardiac rhabdomyoma in this country, and its presentation as an etiological factor of supraventricular tachycardia is a very unusual manifestation.
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