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Kwak W, Jang HS, Belay T, Kim J, Ha YS, Lee SW, Ahn BC, Lee J, Park KM, Yoo J. Evaluation of kidney repair capacity using 99mTc-DMSA in ischemia/reperfusion injury models. Biochem Biophys Res Commun 2011; 406:7-12. [PMID: 21277288 DOI: 10.1016/j.bbrc.2011.01.085] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Accepted: 01/22/2011] [Indexed: 11/29/2022]
Abstract
Quantitative (99m)Tc-DMSA renal uptake was studied in different renal ischemia/reperfusion (I/R) mice models for the assessment of renal repair capacity. Mice models of nephrectomy, uni- and bi-lateral I/R together with sham-operated mice were established. At 1h, 1d, 4d, 1, 2 and 3 wk after I/R, (99m)Tc-DMSA (27.7 ± 1.3 MBq) was injected via tail vein and after 3h post-injection, the mice were scanned for 30 min with pinhole equipped gamma camera. Higher uptake of (99m)Tc-DMSA was measured in normal kidneys of uni-lateral I/R model and nephrectomized kidney I/R model at 3 wk post-surgery. Comparing the restoration capacities of the affected kidneys of nephrectomy, uni- and bi-lateral I/R models, higher repair capacity was observed in the nephrectomized model followed by bi-lateral then uni-lateral models. The normal kidney may retard the restoration of damaged kidney in uni-lateral I/R model. Moreover, 3 wk after Uni-I/R, the size of injured kidney was significantly smaller than non-ischemic contralateral and sham operated kidneys, while nephrectomy I/R kidneys were significantly enlarged compared to all others at 3 wk post-surgery. Very strong correlation between (99m)Tc-DMSA uptake and weight of dissected kidneys in I/R models was observed. Consistent with (99m)Tc-DMSA uptake results, all histological results indicate that kidney recovery after injury is correlated with the amount of intact tubules and kidney sizes. In summary, our study showed good potentials of (99m)Tc-DMSA scan as a promising non-invasive method for evaluation of kidney restoration after I/R injuries. Interestingly, mice with Bi-I/R injury showed faster repair capacity than those with uni-I/R.
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Park JC, Yu MK, An GI, Park SI, Oh J, Kim HJ, Kim JH, Wang EK, Hong IH, Ha YS, Choi TH, Jeong KS, Chang Y, Welch MJ, Jon S, Yoo J. Facile preparation of a hybrid nanoprobe for triple-modality optical/PET/MR imaging. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:2863-2868. [PMID: 21104828 DOI: 10.1002/smll.201001418] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Lee EJ, Ahn KJ, Ha YS, Oh HE, Park CS, Song SY, Park NH, Kim MS. Unusual findings in cerebral abscess: report of two cases. Br J Radiol 2006; 79:e156-61. [PMID: 17065277 DOI: 10.1259/bjr/27055708] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Markedly restricted water diffusion is a characteristic of purulent fluid in brain abscesses. We report two cases of brain abscesses with unusual diffusion findings.
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Dickman MB, Ha YS, Yang Z, Adams B, Huang C. A protein kinase from Colletotrichum trifolii is induced by plant cutin and is required for appressorium formation. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2003; 16:411-21. [PMID: 12744512 DOI: 10.1094/mpmi.2003.16.5.411] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
When certain phytopathogenic fungi contact plant surfaces, specialized infection structures (appressoria) are produced that facilitate penetration of the plant external barrier; the cuticle. Recognition of this hydrophobic host surface must be sensed by the fungus, initiating the appropriate signaling pathway or pathways for pathogenic development. Using polymerase chain reaction and primers designed from mammalian protein kinase C sequences (PKC), we have isolated, cloned, and characterized a protein kinase from Colletotrichum trifolii, causal agent of alfalfa anthracnose. Though sequence analysis indicated conserved sequences in mammalian PKC genes, we were unable to induce activity of the fungal protein using known activators of PKC. Instead, we show that the C. trifolii gene, designated LIPK (lipid-induced protein kinase) is induced specifically by purified plant cutin or long-chain fatty acids which are monomeric constituents of cutin. PKC inhibitors prevented appressorium formation and, to a lesser extent, spore germination. Overexpression of LIPK resulted in multiple, abnormally shaped appressoria. Gene replacement of lipk yielded strains which were unable to develop appressoria and were unable to infect intact host plant tissue. However, these mutants were able to colonize host tissue following artificial wounding, resulting in typical anthracnose lesions. Taken together, these data indicate a central role in triggering infection structure formation for this protein kinase, which is induced specifically by components of the plant cuticle. Thus, the fungus is able to sense and use host surface chemistry to induce a protein kinase-mediated pathway that is required for pathogenic development.
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Ahmed A, Crawford T, Gould S, Ha YS, Hollrah M, Noor-E-Ain F, Dickman MB, Dussault PH. Synthesis of (R)- and (S)-10,16-dihydroxyhexadecanoic acid: cutin stereochemistry and fungal activation. PHYTOCHEMISTRY 2003; 63:47-52. [PMID: 12657297 DOI: 10.1016/s0031-9422(03)00003-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The first asymmetric syntheses of the cutin monomers (R)- and (S)-10,16-dihydroxyhexadecanoic acid (10,16-DHPA) and confirmation of (S)(+)-absolute configuration for 10,16-DHPA derived from tomato are reported. The individual DHPA stereoisomers display differences in their ability to activate the fungal pathogen Colletotrichum trifolii.
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Ha YS. [Recapturing the concept of health promotion]. KANHOHAK T'AMGU 1993; 2:9-11. [PMID: 7953877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Abstract
A consecutive series of 34 severe head-injured patients (DAI) were studied prospectively. Patients were categorized according to a new, simple classification system comprised of four lesion types according to the compression or obliteration of the ventricles or cisterns. Five patients belonged to type II and 19 patients to type IV. Each type was further subdivided into two GCS score ranges (5 to 8 and below 5). The distribution of the posttraumatic infarction was mainly in the frontal and temporal lobes (60% of all cases). Our data demonstrated that the ICP was significantly lower at a 30 degrees head elevation than at 0 degree (18.6 +/- 7.21 mmHg vs 23.0 +/- 10.60 mmHg. t = 4.22 P < 0.001), but head position did not statistically affect CPP (69.4 +/- 19.86 mmHg vs 68.2 +/- 19.87 mmHg. t = -0.54, P < 0.59). The effect of intensive therapy on ICP, CPP and AVDO2 was studied in all cases, employing steroids and diuretics in a modified intensive care scale. In cases where barbiturates were employed, there were statistically significant changes in ICP and AVDO2 (P < 0.001), but CPP was not affected (P < 0.59). Surviving patients were analyzed by using the GOS and the neurological grading score (NGS, Nihon University) of the persistent vegetative state. Our data suggests that head elevation of 30 degrees and barbiturate therapy are more effective on ICP and AVDO2, and NGS more exact than GOS in vegetative patients.
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Choi CR, Ha YS, Ahn MS, Lee JS, Song JU. Intraventricular or epidural injection of morphine for severe pain. NEUROCHIRURGIA 1989; 32:180-3. [PMID: 2594133 DOI: 10.1055/s-2008-1054033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Intraventricular or epidural injection of morphine through implantable infusion devices was used for severe pain in 50 patients with advanced cancer, arachnoiditis, or spinal injury. Intraventricular catheter was inserted for injection of morphine in 21 patients, 29 were treated through epidural infusion. For the evaluation of results the multimodal evoked potential (MEP) has been obtained before and after each treatment. 80% of the patients experienced good results. No significant side effects have been noted in patients with either epidural or intraventricular injection of morphine. These may be excellent methods for pain control in well selected patients.
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Ha YS. [A study on mother-infant play interaction patterns]. TAEHAN KANHO. THE KOREAN NURSE 1987; 26:43-68. [PMID: 3441119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Lazarus LW, Groves L, Gierl B, Pandey G, Javaid JI, Lesser J, Ha YS, Davis J. Efficacy of phenelzine in geriatric depression. Biol Psychiatry 1986; 21:699-701. [PMID: 3708040 DOI: 10.1016/0006-3223(86)90134-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Ha YS. [Basic nursing education system]. TAEHAN KANHO. THE KOREAN NURSE 1985; 24:34-40. [PMID: 3851982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Yamashita J, Handa H, Tokuriki Y, Ha YS, Otsuka SI, Suda K, Taki W. Intra-arterial ACNU therapy for malignant brain tumors. Experimental studies and preliminary clinical results. J Neurosurg 1983; 59:424-30. [PMID: 6577143 DOI: 10.3171/jns.1983.59.3.0424] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The authors examined the growth rate of mouse 203 glioma cells in vitro and found it to be markedly inhibited after exposure to ACNU for 5 minutes at a drug concentration of 100 micrograms/ml. Rats that had undergone intracranial implantation of T1 neurogenic tumor were treated by 5 mg/kg of ACNU administered either intravenously or intra-arterially. The median survival times for the control animals and the animals undergoing intravenous or intracarotid administration of ACNU were 23, 29, and 46 days, respectively. The difference in survival time between the intravenous and intracarotid administration groups was statistically significant (p less than 0.01) when examined by the Cox-Mantel test. In a clinical trial, 17 patients with glioblastoma were treated by ACNU, eight intravenously and nine by the intra-arterial route. The drug was given in doses of 2 to 3 mg/kg at least twice before and twice after a course of postoperative radiotherapy. Intra-arterial administration was performed over a period of 5 minutes under local anesthesia. The median postoperative survival time for the patients in the intra-arterial group was 12.5 months, compared with 9.0 months for those in the intravenous group. The survival rate for the intra-arterial group was slightly higher, although statistically not significant, probably because the number of cases was small. The degree of thrombocytopenia due to ACNU tended to be less marked in the intra-arterially treated patients. The theoretical advantages of the intra-arterial administration of ACNU are discussed.
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Yamashita J, Ohtsuka S, Yamasaki T, Gi H, Ha YS, Handa H, Abe M, Itoh M. [Clinical studies of 116 cases of brain metastases of lung cancer--relative roles of surgery and radiotherapy]. NIHON GAN CHIRYO GAKKAI SHI 1983; 18:1124-34. [PMID: 6663166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Ha YS. Nurses' participation in primary health care in Korea. Int Nurs Rev 1982; 29:177-9. [PMID: 6924931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ha YS, Yamashita J, Aoyama I, Ishikawa M, Handa H. [Clinical analysis of 22 spinal neurinomas--with special reference to ct metrizamide myelography and CO2 laser--]. NO SHINKEI GEKA. NEUROLOGICAL SURGERY 1982; 10:709-16. [PMID: 6813754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Twenty-two spinal neurinomas, admitted to the Department of Neurosurgery, Kyoto University Medical School during the past 40 years, were retrospectively analysed under the circumstances that most of lower spinal and or spinal cord tumors had usually been handled by orthopedic surgeons in Japan. Of the total of 22 cases, there were 14 cervical, 6 thoracic and 2 lumbar neurinomas. Age distribution was from 16 to 70 years of age with the average 38. Von Recklinghausen's disease accompanied spinal neurinoma in 4 cases. Of 3 cases under the age of 20, two were associated with von Recklinghausen's disease. Motor deficits were the prominent clinical symptoms on admission in 63% of the cases, while pains were the initial symptoms in 77% of the cases. Twenty-nine percent of cervical neurinomas were of dumbbell type, extending both in the intraspinal and extraspinal spaces. In addition to the conventional neuroradiologic investigations, CT metrizamide myelography was extremely advantageous in detecting the localization and relation of spinal neurinomas to the spine and spinal cord as well as bony changes. Laser surgery was utilized in the recent two cases of spinal neurinomas of dumbbell type. It was found useful in that it enabled intraspinal decompression by a non-touch technique prior to laminectomy.
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Ha YS. [Social and economic welfare]. TAEHAN KANHO. THE KOREAN NURSE 1981; 20:19-20. [PMID: 6913679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ha YS. Panel discussion by the KNA: partners in education-teachers and students. Introduction. TAEHAN KANHO. THE KOREAN NURSE 1981; 20:24-6. [PMID: 6913681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ha YS. [Seminar on nursing and primary health care: ICN policy on primary health care]. TAEHAN KANHO. THE KOREAN NURSE 1978; 17:18-20. [PMID: 253826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Ha YS. [International nursing trend - nursing toward the 2000's]. TAEHAN KANHO. THE KOREAN NURSE 1978; 17:6-12. [PMID: 253835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Ha YS. [Is the present system of nursing education effective? Opinion of nursing educators]. TAEHAN KANHO. THE KOREAN NURSE 1977; 16:14-7. [PMID: 244659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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47
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Ha YS, Han YB. [Study to contribute to a philosophy of nursing education in Korea]. TAEHAN KANHO. THE KOREAN NURSE 1976; 15:42-60. [PMID: 1071132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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48
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Ha YS. [Nursing diagnosis and planning]. TAEHAN KANHO. THE KOREAN NURSE 1976; 15:23-6. [PMID: 1071126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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49
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Ha YS, Han YB. [Report of nursing studies. 4. A study as a contribution to a philosphy of nursing education in Korea]. TAEHAN KANHO. THE KOREAN NURSE 1976; 15:29-50. [PMID: 1069879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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50
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Ha YS, Han YB. [Report of nursing studies. 3. A study as a contribution to a philosophy of nursing education in Korea]. TAEHAN KANHO. THE KOREAN NURSE 1976; 15:26-39. [PMID: 1069869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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