251
|
Bernal JE, Duran C, Briceno I, Ortega J, Papiha SS. HLA antigens in five Amerindian groups (Yuko, Bari, Tunebo, Guane and Paez) of Colombia: results of 'Expedición Humana'. Hum Hered 1995; 45:186-91. [PMID: 7558049 DOI: 10.1159/000154287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The serological HLA types (A, B, C and D loci) were studied in five different Indian groups in Colombia. The range of polymorphism was not very restricted in these groups, but there was significant genetic heterogeneity among the five populations in all the HLA loci. The gene frequency data, when converted into a kinship matrix and a two-dimensional eigen vector plot, showed a closer affinity between Bari and Yuko Indians, while Guane, Tunebo and Paez Indians were not only genetically different from the former but also well-differentiated from each other. It seems therefore from this study that geographical proximity may play a greater role than linguistic similarities in the genetic affinities of Colombian Amerindians.
Collapse
|
252
|
Ortega J. On the Informativeness of the DNA Promoter Sequences Domain Theory. J ARTIF INTELL RES 1995. [DOI: 10.1613/jair.161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The DNA promoter sequences domain theory and database havebecome popular for testing systems that integrate empirical andanalytical learning. This note reports a simple change andreinterpretation of the domain theory in terms of M-of-N concepts,involving no learning, that results in an accuracy of 93.4% on the 106items of the database. Moreover, an exhaustive search of the space ofM-of-N domain theory interpretations indicates that the expectedaccuracy of a randomly chosen interpretation is 76.5%, and that amaximum accuracy of 97.2% is achieved in 12 cases. This demonstratesthe informativeness of the domain theory, without the complications ofunderstanding the interactions between various learning algorithms andthe theory. In addition, our results help characterize the difficultyof learning using the DNA promoters theory.
Collapse
|
253
|
Ortega J, Sankey OF. Relative stability of hexagonal and planar structures of hypothetical C3N4 solids. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:2624-2627. [PMID: 9979029 DOI: 10.1103/physrevb.51.2624] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
254
|
González E, Ortega J. Vapor-Liquid Equilibria for Mixtures of Several Butyl Esters (Methanoate to Butanoate) and 1-Propanol at 101.32kPa. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1995. [DOI: 10.1252/jcej.28.765] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
255
|
Susial P, Ortega J. Vapor-liquid equilibria of methyl ethanoate with n-butyl and iso-butyl alcohol at 74.66 and 127.99kPa. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1995. [DOI: 10.1252/jcej.28.66] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
256
|
Raney B, Ensign LG, Foreman J, Khan F, Newton W, Ortega J, Ragab A, Wharam M, Wiener E, Maurer H. Renal toxicity of ifosfamide in pilot regimens of the intergroup rhabdomyosarcoma study for patients with gross residual tumor. THE AMERICAN JOURNAL OF PEDIATRIC HEMATOLOGY/ONCOLOGY 1994; 16:286-95. [PMID: 7978043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
PURPOSE The purpose of this review is to characterize the nephrotoxicity noted in newly diagnosed patients under 21 years of age after treatment with ifosfamide-containing chemotherapy regimens and local irradiation for localized gross residual rhabdomyosarcoma or undifferentiated sarcoma. PATIENTS AND METHODS From 1987 to 1991, 194 previously untreated patients received vincristine and ifosfamide plus dactinomycin or etoposide for 1-2 years. Ifosfamide was given at 1.8 g/m2/day for 5 days with sodium mercaptoethane sulfonate, or 9 g/m2 of ifosfamide per course. The three-drug regimen was repeated every 3-4 weeks. RESULTS Twenty-eight patients (14%) developed renal toxicity: 19 had renal tubular dysfunction (RTD) characterized by low serum phosphate (< or = 3 mg/dl) or bicarbonate (< 20 or = mEq/L) levels, five had decreased glomerular function (DGF), and four had both RTD and DGF. When nine or more courses of ifosfamide (> 72 g/m2) were given, children < 3 years of age had a higher incidence of RTD than did children > or = 3 years of age (34% versus 6%; p < 0.001). A similar age difference was observed even when eight or fewer courses (< or = 72 g/m2) were given (p = 0.03). A matched case-control comparison showed that renal abnormalities at diagnosis, chiefly hydronephrosis, also increased the risk of renal tubular injury by ifosfamide by a factor of 13 (p < 0.001). Patients with DGF tended to be older than those with RTD, and all but one received > 72 g/m2 of ifosfamide. CONCLUSIONS Patients who are < 3 years of age who receive more than eight courses (> 72 g/m2) of ifosfamide and who have a preexisting renal abnormality have an increased risk of RTD and DGF. The renal function of patients being considered for ifosfamide treatment must be carefully monitored. Ifosfamide should be avoided in patients with renal abnormalities at diagnosis unless the potential benefit clearly exceeds the risk of further renal impairment.
Collapse
|
257
|
Ortega J, Lewis JP, Sankey OF. Simplified electronic-structure model for hydrogen-bonded systems: Water. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:10516-10530. [PMID: 9975149 DOI: 10.1103/physrevb.50.10516] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
258
|
García-Vidal FJ, Merino J, Pérez R, Rincón R, Ortega J, Flores F. Density-functional approach to LCAO methods. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:10537-10547. [PMID: 9975151 DOI: 10.1103/physrevb.50.10537] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
259
|
de Matos Gomes E, Zúñiga FJ, Ortega J, Etxebarria J. The structure and optical activity of SrS2O6.4H2O. J Appl Crystallogr 1994. [DOI: 10.1107/s0021889894000427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
260
|
Rabanal LM, Mons R, Maestre JM, Mariñán M, Ortega J. [Heart rupture following thoracic blunt trauma]. Arch Bronconeumol 1994; 30:365-7. [PMID: 7952841 DOI: 10.1016/s0300-2896(15)31049-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We describe a 39-year-old woman who suffered rupture of the left auricula as a result of a non-penetrating chest wound received in a traffic accident. Rupture of the heart chambers after trauma is not infrequent, but survival is extremely rare. The patient was released from care and has suffered no subsequent complications.
Collapse
|
261
|
Ortega J, Ros�s M, Bosch E. Variation of some microscopic properties with composition in 2-methoxyethanol and 1,2-ethanediol mixtures. J SOLUTION CHEM 1994. [DOI: 10.1007/bf00972719] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
262
|
Ortega J, Peña JA. Vapor-liquid equilibria of methyl or ethyl acetate with 1-chloropentane or 1-chlorohexane at 101.32kPa pressure. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1994. [DOI: 10.1252/jcej.27.351] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
263
|
Galvan S, Ortega J, Susial P, Peña JA. Isobaric vapor-liquid equilibria for propyl methanoate+(n-alkanes, C7,C8,C9) or n-alkanols(C2,C3,C4). JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1994. [DOI: 10.1252/jcej.27.529] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
264
|
Glotin F, Chaput R, Jaroszynski D, Prazeres R, Ortega J. Infrared subpicosecond laser pulses with a free-electron laser. PHYSICAL REVIEW LETTERS 1993; 71:2587-2590. [PMID: 10054719 DOI: 10.1103/physrevlett.71.2587] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
265
|
Fernandez-Montraveta C, Ortega J. Sex differences in the agonistic behaviour of a lycosid spider (Araneae Lycosidae). ETHOL ECOL EVOL 1993. [DOI: 10.1080/08927014.1993.9523017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
266
|
Ortega J, Etxebarria J, Breczewski T. Relation between the optical properties and structure of KLiSO4in the room-temperature phase. J Appl Crystallogr 1993. [DOI: 10.1107/s002188989201286x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
267
|
Folcia CL, Ortega J, Etxebarria J, Breczewski T. Optical properties and symmetry restrictions in the incommensurate phase of. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:695-700. [PMID: 10007926 DOI: 10.1103/physrevb.48.695] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
268
|
García-Ocaña A, Ortega J, González-García Y, García-Cantón C, Esbrit P. Partial purification of a renotropic activity from plasma of uninephrectomized human subjects. Nephron Clin Pract 1993; 64:547-51. [PMID: 8366979 DOI: 10.1159/000187398] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A renotropic factor was partially purified by sequential gel filtration and anion exchanger chromatography from plasma of human kidney transplantation donors and a renal cancer patient after uninephrectomy. This activity increased the rate of [3H]thymidine incorporation into DNA in rat cortical tubules, but not in rat liver cells, within the range of 100-200 ng/ml protein. The renotropic activity was detected between 7 and 12 days after uninephrectomy, and at least in 1 case decreased thereafter. This activity was undetected in gel-filtrated plasma of patients after a nonurological surgical procedure. The potency of this renotropic activity and its elution by gel filtration are similar to those displayed by a renal growth factor activity isolated from uninephrectomized rat plasma, as recently reported.
Collapse
|
269
|
Ortega J, Susial P. Vapor-liquid equilibria behavior of methyl esters and propan-2-ol at 74.66, 101.32 and 127.99 kPa. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1993. [DOI: 10.1252/jcej.26.259] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
270
|
Ortega J, Ruiz M, Fernandez‐Montraveta C. Daily patterns of locomotor activity in a Lycosid spider. ACTA ACUST UNITED AC 1992. [DOI: 10.1080/09291019209360188] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
271
|
Ortega J, García-Vidal FJ, Pérez R, Rincón R, Flores F, Coluzza C, Gozzo F, Margaritondo G, Hwu Y, Lozzi L. Early stages of Schottky-barrier formation for Al deposited on GaAs(110). PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:10277-10283. [PMID: 10002872 DOI: 10.1103/physrevb.46.10277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
272
|
Ortega J, Etxebarria J, Zubillaga J, Breczewski T, Tello MJ. Lack of optical activity in the incommensurate phases of Rb2ZnBr4 and. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:5155-5162. [PMID: 10000229 DOI: 10.1103/physrevb.45.5155] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
273
|
Garca-Vidal FJ, Martn-Rodero A, Flores F, Ortega J, Pérez R. Molecular-orbital theory for chemisorption: The case of H on normal metals. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:11412-11431. [PMID: 9999265 DOI: 10.1103/physrevb.44.11412] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
274
|
King DR, Ortega J, Campbell J, Haas J, Ablin A, Lloyd D, Newman K, Quinn J, Krailo M, Feusner J. The surgical management of children with incompletely resected hepatic cancer is facilitated by intensive chemotherapy. J Pediatr Surg 1991; 26:1074-80; discussion 1080-1. [PMID: 1658289 DOI: 10.1016/0022-3468(91)90677-l] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This prospective study was undertaken to evaluate the efficacy of continuous-infusion doxorubicin and cisplatin (CI-DOX/CPPD) for the treatment of children with incompletely resected hepatic cancer. Of the 46 evaluable patients, 32 had hepatoblastoma (70%) and 14 had hepatocellular carcinoma. Ten children had stage II tumors (microscopic residual), 25 were defined as stage III (gross residual), and 11 had distant metastasis (stage IV). Twelve patients underwent initial incomplete resection of their hepatic lesions and in the 34 others tumor biopsy specimens were obtained. Chemotherapy was administered and the majority of the children (70%) had an excellent clinical response with a decrease in both alpha-fetoprotein levels and measured tumor dimensions. The combination of CI-DOX/CPDD clearly facilitated surgical management, allowing for delayed hepatic resections in 20 of the 34 patients (59%) whose tumors were initially biopsied and considered to be unresectable. Overall survival in this study demonstrates a significant improvement in comparison to the historical controls. Twenty-one patients (46%) remain in complete clinical remission an average of 30 months following diagnosis (range, 17 to 40 months). The outcome of the children with hepatoblastoma was much better than those with hepatocellular carcinoma (63% v 17% survival). Survival of the 20 children who underwent delayed hepatic resections was not statistically different from the 12 patients whose hepatic tumors were removed at the initial laparotomy (41% v 58% survival). Although no obvious survival advantage was observed in those patients who underwent initial hepatic resections, there did appear to be an increased risk of postoperative complications in children whose tumors were resected following chemotherapy (8% v 25%).
Collapse
|
275
|
Wiersma SR, Ortega J, Sobel E, Weinberg KI. Clinical importance of myeloid-antigen expression in acute lymphoblastic leukemia of childhood. N Engl J Med 1991; 324:800-8. [PMID: 1997852 DOI: 10.1056/nejm199103213241204] [Citation(s) in RCA: 136] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Leukemic cells in 15 to 25 percent of patients with acute lymphoblastic leukemia (ALL) express myeloid antigens as well as lymphoid antigens (the latter reflecting B-cell or T-cell lineage). The relations of myeloid-antigen expression to other features of ALL and to prognosis have been controversial. METHODS We analyzed clinical and laboratory features present at diagnosis in 236 consecutive cases of ALL in children. Immunophenotyping, including single- and dual-fluorescence analyses, was used to classify leukemic cells as B or T lymphoblasts and also to identify myeloid-antigen expression--the simultaneous expression of lymphoid-associated antigens and at least one of three myeloid-associated antigens (CD33, CD13, and CD14) on cells classified as L1 or L2 according to the French-American-British system. RESULTS Forty-five of 185 patients with B-lineage ALL had myeloid-antigen expression, as did 8 of 41 patients with T-lineage ALL. In 10 patients, the lineage could not be determined. Myeloid-antigen expression was associated with L2 morphology (P less than 0.05), but it did not correlate with other prognostic features recognized previously. Multivariate analysis showed that myeloid-antigen expression was an important predictor of relapse in childhood ALL and the most significant prognostic factor statistically (P less than 0.0001). A white-cell count greater than or equal to 50 x 10(9) per liter at diagnosis was also an important and highly significant prognostic feature (P less than 0.001). After 40 months, the estimated disease-free survival for patients with ALL was 84 percent for those without myeloid-antigen expression and with a low white-cell count, 57 percent for those without myeloid-antigen expression and with a high white-cell count, 47 percent for those with myeloid-antigen expression and a low white-cell count, and 26 percent for those with myeloid-antigen expression and a high white-cell count (P less than 0.00001). CONCLUSIONS Myeloid-antigen expression is an important independent predictor of a poor response to chemotherapy in childhood ALL.
Collapse
|
276
|
Pereira E, San Filippo G, Pereyra C, Ortega J, Rosendo A, Perurena R. [Maxillofacial fractures. Our experience]. REVISTA DE LA SOCIEDAD ODONTOLOGICA DE LA PLATA 1991; 4:26-9. [PMID: 2064805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
277
|
Ortega J, Susial P. Isobaric vapor-liquid equilibria for binary systems composed of methyl butanoate with ethanol and with propan-1-ol at 114.66 and 127.99 kpa. CAN J CHEM ENG 1991. [DOI: 10.1002/cjce.5450690150] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
278
|
Lobato R, Castañeda M, Ortega J, Domínguez J. Malformación arteriovenosa occipital manifestada por hematoma subdural agudo de la convexidad hemisférica. Neurocirugia (Astur) 1991. [DOI: 10.1016/s1130-1473(91)71180-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
279
|
Ortega J, Flores F. Ortega and Flores reply. PHYSICAL REVIEW LETTERS 1990; 65:525. [PMID: 10042943 DOI: 10.1103/physrevlett.65.525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
280
|
Gutiérrez M, Ortega J. Influence of chemical and photoelectrochemical etching on the n-CdSe0.65Te0.35 polycrystalline thin films: Application in the PEC cells. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0165-1633(90)90030-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
281
|
Herrasti P, Fatás E, Herrero J, Ortega J. Determination of the flat band potential for In2S3/electrolyte interfaces. Electrochim Acta 1990. [DOI: 10.1016/0013-4686(90)87008-p] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
282
|
Ortega J, Susial P. Measurements and prediction of VLE of methyl propanoate/ethanol/propan-1-ol at 114.6 and 127.99kPa. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1990. [DOI: 10.1252/jcej.23.349] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
283
|
Perrett DI, Harris MH, Mistlin AJ, Hietanen JK, Benson PJ, Bevan R, Thomas S, Oram MW, Ortega J, Brierly K. Social Signals Analyzed at the Single Cell Level: Someone is Looking at Me, Something Moved! INTERNATIONAL JOURNAL OF COMPARATIVE PSYCHOLOGY 1990. [DOI: 10.46867/c4x88p] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
284
|
Bleyer WA, Fallavollita J, Robison L, Balsom W, Meadows A, Heyn R, Sitarz A, Ortega J, Miller D, Constine L. Influence of age, sex, and concurrent intrathecal methotrexate therapy on intellectual function after cranial irradiation during childhood: a report from the Children's Cancer Study Group. Pediatr Hematol Oncol 1990; 7:329-38. [PMID: 2268533 DOI: 10.3109/08880019009033410] [Citation(s) in RCA: 66] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Standard IQ tests were performed in 70 children and adolescents 3.5-10 years (median 5 yrs) after 24 Gy cranial irradiation, with or without concurrent intrathecal methotrexate, for central nervous system prophylaxis of acute lymphoblastic leukemia. Lower IQ scores correlated with younger age, female gender, and concomitant intrathecal methotrexate therapy. Multivariate analysis identified age as the most important determinant of the three factors. The lowest IQ scores were observed in girls who were less than 5 years old at the time of irradiation and who received concurrent intrathecal methotrexate. The observed adverse contribution of simultaneous intrathecal methotrexate therapy on IQ outcome may have significant implications for school performance, peer relationships, and occupational expectations.
Collapse
|
285
|
Ortega J, Susial P. VLE at 114.66 and 127.99kPa for the systems methyl acetate+ethanol and methyl acetate+propan-1-ol. Measurements and prediction. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1990. [DOI: 10.1252/jcej.23.621] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
286
|
Gutiérrez M, Ortega J. Electrochemical preparation and characterization of n-CdSe0.65Te0.35 polycrystalline thin films: Influence of annealing. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0165-1633(89)90032-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
287
|
Martinez-Leon J, Carbonell C, Ortega J. A new technical approach for retrograde administration of cardioplegic solutions. Thorac Cardiovasc Surg 1989; 37:372-3. [PMID: 2617504 DOI: 10.1055/s-2007-1020356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Myocardial protection via the coronary sinus is now currently used by several groups. Although it has generally provided satisfactory results, some of its problems are still not completely resolved. We present a new technique of cardioplegia delivery through the coronary sinus with a Pezzer catheter inserted into it and secured in place by a purse string suture. We believe that this method is safer and more reliable than others.
Collapse
|
288
|
Ortega J, Flores F. Schottky-barrier formation at low metal coverages: A consistent molecular-orbital calculation for K on GaAs(110). PHYSICAL REVIEW LETTERS 1989; 63:2500-2503. [PMID: 10040904 DOI: 10.1103/physrevlett.63.2500] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
289
|
Ortega J, Susial P. Excess molar volumes of mixtures containing methyl alkanoates (acetate, propanoate, and butanoate) with normal alkanols (from ethanol to pentan-1-ol). CAN J CHEM 1989. [DOI: 10.1139/v89-168] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Measurements of νE for binary mixtures of CmH2m+1CO2CH3 (m = 1,2,3) + CnH2n+1(OH) (n = 2,3,4,5) are reported. The results have been determined by using the densities obtained in a vibrating tube densimeter at 298.15 K, they are positive for all these systems. The data have also been compared with available literature values with a discussion on these mixtures. Keywords: excess molar mixtures, methyl alkanoates, normal alkanols.
Collapse
|
290
|
Ortega J, Klinger D, Creoff P, Jailloux M. [Role of the clinical nurse specialist in diabetes]. SOINS; LA REVUE DE REFERENCE INFIRMIERE 1989:36-9. [PMID: 2749311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
291
|
Azofra JA, Inglada L, Macarrón P, Ortega J, Dronda F. [Meningitis caused by Salmonella in an 84-year-old woman]. Enferm Infecc Microbiol Clin 1989; 7:228-9. [PMID: 2490711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
292
|
Boechat MI, Kangarloo H, Ortega J, Hall T, Feig S, Stanley P, Gilsanz V. Primary liver tumors in children: comparison of CT and MR imaging. Radiology 1988; 169:727-32. [PMID: 2847233 DOI: 10.1148/radiology.169.3.2847233] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A prospective study was performed at two institutions to determine the role of magnetic resonance (MR) imaging in the evaluation of primary pediatric liver tumors. The study compared the usefulness of MR imaging and computed tomography (CT) in providing a correct diagnosis, assessing resectability, and determining tumor recurrence in 23 children with liver tumors. The information obtained with both modalities was correlated with surgical data. The results indicate that the accuracy of MR imaging in helping to differentiate benign from malignant lesions is high and identical to that of CT, but not good enough to obviate surgical diagnosis. While all five hepatocellular carcinomas were correctly diagnosed preoperatively with both modalities, neither CT nor MR imaging could help differentiate these carcinomas from aggressive hepatoblastoma or primary hepatic lymphoma. MR imaging helped correctly predict tumor resectability in all 18 children with malignant hepatic tumors; in one, exact tumor extension was misjudged with CT. Postoperative MR studies suggested tumor recurrence in three children who had unremarkable CT examinations. Second-look surgery showed recurrent tumor in two and fibrosis with chronic inflammation at the surgical margin in the third child.
Collapse
|
293
|
Weinblatt ME, Kochen J, Ortega J. Danazol for children with immune thrombocytopenic purpura. AMERICAN JOURNAL OF DISEASES OF CHILDREN (1960) 1988; 142:1317-9. [PMID: 3195531 DOI: 10.1001/archpedi.1988.02150120071043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Ten patients with steroid-dependent or refractory immune thrombocytopenic purpura were treated with danazol in an attempt to improve their platelet counts. Nine of the ten children exhibited an excellent initial response to the drug, with five achieving a complete, unmaintained remission. Two others were able to have their prednisone doses tapered with a resultant disappearance of steroid-induced adverse effects. No significant adverse effects of danazol were noted. Danazol seems to be effective in the treatment of children with immune thrombocytopenic purpura and would warrant additional studies to determine its proper role in the management of this common pediatric ailment.
Collapse
|
294
|
Contis A, Créoff P, Lorand V, Ortega J, Warnet A. [The nurse's role in pituitary testing]. SOINS; LA REVUE DE REFERENCE INFIRMIERE 1988:15-8. [PMID: 3187590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
295
|
Ortega J, Garcia JD. Excess molar volumes of methyl alkanoate with n-alkanols at 298.15 K. CAN J CHEM 1988. [DOI: 10.1139/v88-245] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This work reports on the excess molar volumes at 298.15 K of fifteen binary systems formed by {xCmH2m+1CO2CH3 (m = 1, 2, 3) + (1 − x)CnH2n+1(OH) (n = 6, 7, 8, 9, 10)}. The [Formula: see text] values were calculated using densities obtained in a vibrating-tube densimeter, the excess molar volumes being positive for all these systems. A qualitative interpretation of the results is presented on the basis of the appearance of specific interactions between the —CO—O— groups of the ester and the —OH of the n-alkanol.
Collapse
|
296
|
Ortega J, Sánchez-Dehesa J, Flores F. Early-stage formation of metal-semiconductor interfaces. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 37:8516-8518. [PMID: 9944208 DOI: 10.1103/physrevb.37.8516] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
297
|
Gómez-Ferrer F, Ortega J, Cortés J, Ruiz J, Arnal C. [Early or delayed operations in acute cholecystitis]. REVISTA ESPANOLA DE LAS ENFERMEDADES DEL APARATO DIGESTIVO 1988; 73:259-63. [PMID: 3368623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
298
|
Maurer HM, Beltangady M, Gehan EA, Crist W, Hammond D, Hays DM, Heyn R, Lawrence W, Newton W, Ortega J. The Intergroup Rhabdomyosarcoma Study-I. A final report. Cancer 1988. [PMID: 3275486 DOI: 10.1002/1097-0142(19880115)61:2<209::aid-cncr2820610202>3.0.co;2-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The results of treatment of 686, previously untreated patients younger than 21 years with rhabdomyosarcoma or undifferentiated sarcoma, who were entered on Intergroup Rhabdomyosarcoma Study-I (IRS-I) were analyzed after a minimum potential follow-up time of 7 years. Patients in Clinical Group I (localized disease, completely resected) were randomized to receive either vincristine, dactinomycin, and cyclophosphamide (VAC) or VAC + radiation. At 5 years, approximately 80% of patients given either treatment were still disease-free and there was no significant difference between treatments in the overall percentages of patients surviving of 93% and 81%, respectively (P = 0.67). Patients in Clinical Group II (regional disease, grossly resected) were randomized to receive either vincristine and dactinomycin (VA) + radiation or VAC + radiation. At 5 years, 72% and 65% of the patients, respectively, were disease-free and there was no evidence of a difference between treatments (P = 0.46). The overall survival percentage at 5 years was approximately 72% for both treatments. Patients in Clinical Groups III (gross residual disease after surgery) and IV (metastatic disease) were randomized to receive either "pulse" VAC + radiation or "pulse" VAC + Adriamycin (doxorubicin) + radiation. The complete remission (CR) rate was 69% in Clinical Group III and 50% in IV, with no statistically significant difference in CR rates between treatments in either group. Those who achieved a CR had a nearly 60% chance of staying in remission for 5 years in Clinical Group III compared with approximately 30% in Clinical Group IV. The overall survival percentage at 5 years was 52% in Clinical Group III compared to 20% in Clinical Group IV (P less than 0.0001). The 5-year survival percentage for the entire cohort of 686 patients was 55%. Survival after relapse was poor, being 32% at 1 year and 17% at 2 years. The risk of distant metastasis was much greater than the risk of local recurrence within each clinical group, and there was no evidence of differing types of relapses between treatments. Primary tumors of the orbit and genitourinary tract carried the best prognosis, whereas tumors of the retroperitoneum had the worst prognosis. The authors conclude that for the therapeutic regimens evaluated there was no therapeutic advantage to including radiation in the treatment of Clinical Group I disease, or cyclophosphamide given as a daily low-dose oral regimen in the treatment of Clinical Group II disease or Adriamycin in the treatment of Clinical Groups III and IV diseases.
Collapse
|
299
|
Maurer HM, Beltangady M, Gehan EA, Crist W, Hammond D, Hays DM, Heyn R, Lawrence W, Newton W, Ortega J. The Intergroup Rhabdomyosarcoma Study-I. A final report. Cancer 1988; 61:209-20. [PMID: 3275486 DOI: 10.1002/1097-0142(19880115)61:2<209::aid-cncr2820610202>3.0.co;2-l] [Citation(s) in RCA: 619] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The results of treatment of 686, previously untreated patients younger than 21 years with rhabdomyosarcoma or undifferentiated sarcoma, who were entered on Intergroup Rhabdomyosarcoma Study-I (IRS-I) were analyzed after a minimum potential follow-up time of 7 years. Patients in Clinical Group I (localized disease, completely resected) were randomized to receive either vincristine, dactinomycin, and cyclophosphamide (VAC) or VAC + radiation. At 5 years, approximately 80% of patients given either treatment were still disease-free and there was no significant difference between treatments in the overall percentages of patients surviving of 93% and 81%, respectively (P = 0.67). Patients in Clinical Group II (regional disease, grossly resected) were randomized to receive either vincristine and dactinomycin (VA) + radiation or VAC + radiation. At 5 years, 72% and 65% of the patients, respectively, were disease-free and there was no evidence of a difference between treatments (P = 0.46). The overall survival percentage at 5 years was approximately 72% for both treatments. Patients in Clinical Groups III (gross residual disease after surgery) and IV (metastatic disease) were randomized to receive either "pulse" VAC + radiation or "pulse" VAC + Adriamycin (doxorubicin) + radiation. The complete remission (CR) rate was 69% in Clinical Group III and 50% in IV, with no statistically significant difference in CR rates between treatments in either group. Those who achieved a CR had a nearly 60% chance of staying in remission for 5 years in Clinical Group III compared with approximately 30% in Clinical Group IV. The overall survival percentage at 5 years was 52% in Clinical Group III compared to 20% in Clinical Group IV (P less than 0.0001). The 5-year survival percentage for the entire cohort of 686 patients was 55%. Survival after relapse was poor, being 32% at 1 year and 17% at 2 years. The risk of distant metastasis was much greater than the risk of local recurrence within each clinical group, and there was no evidence of differing types of relapses between treatments. Primary tumors of the orbit and genitourinary tract carried the best prognosis, whereas tumors of the retroperitoneum had the worst prognosis. The authors conclude that for the therapeutic regimens evaluated there was no therapeutic advantage to including radiation in the treatment of Clinical Group I disease, or cyclophosphamide given as a daily low-dose oral regimen in the treatment of Clinical Group II disease or Adriamycin in the treatment of Clinical Groups III and IV diseases.
Collapse
|
300
|
Lenarsky C, Weinberg K, Guinan E, Dukes PP, Barak Y, Ortega J, Siegel S, Williams K, Lazerson J, Weinstein H. Bone marrow transplantation for constitutional pure red cell aplasia. Blood 1988; 71:226-9. [PMID: 3120824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Constitutional pure red cell aplasia (CPRCA) is a syndrome of failed erythropoiesis usually diagnosed within the first year of life. Four patients with CPRCA received transplants with marrow from their HLA-identical, mixed lymphocyte culture-nonreactive siblings. All patients were resistant to corticosteroid therapy and were dependent on regular red cell transfusions for at least 5 years. Three patients were conditioned with procarbazine, antithymocyte globulin, cyclophosphamide, and busulfan, and one was conditioned with antithymocyte serum, cyclophosphamide, and busulfan. Three patients promptly had successful engraftments with establishment of donor hematopoiesis. One patient initially rejected his graft but received a successful retransplant. All patients are currently alive with Karnofsky performance scores of 100 and normal erythropoiesis of donor origin. Despite a history of multiple transfusions, bone marrow transplantation is a potentially curative therapy for patients with CPRCA.
Collapse
|