251
|
Martínez R, Pardo MP, Grau L, Modol J, Soler J. [Generalized scleroderma and angioaccesses for hemodialysis]. ANGIOLOGIA 1989; 41:109-11. [PMID: 2751148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Considering the manifold difficulties present in renal insufficiency: economical as much as those created by reinterventions in order to keep the angioacceses viable, the use of Quinton's double lumen catheter is proposed in generalized scleroderma, obliteration of several angioaccesses, absence of distal bed in left upper limb, and dry skin in a patient with chronic renal insufficiency.
Collapse
|
252
|
Montero S, de Arriaga D, Busto F, Soler J. Induction of intracellular and extracellular beta-galactosidase activity in Phycomyces blakesleeanus. BIOCHEMISTRY INTERNATIONAL 1989; 18:637-45. [PMID: 2764969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The inductive effect of different sugars on beta-galactosidase synthesis in Phycomyces blakesleeanus has been studied. The enzyme was inducible by galactose and fructose. When grown on these sugars the enzyme level was 10-20 times greater than when grown on glucose. We have detected both intra- and extracellular beta-galactosidase activity when Phycomyces blakesleeanus was grown on galactose, but only extracellular beta-galactosidase activity when grown on fructose plus lactose.
Collapse
|
253
|
Gómez JM, Virgili N, Navarro MA, Roca M, Montaña E, Soler J. [Study of thyroid function parameters and thyrotropin in general non-thyroid diseases]. Med Clin (Barc) 1989; 92:5-9. [PMID: 2497285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The changes in the parameters of thyroid function and thyrotropin (TSH) have been evaluated in 5 groups of patients with general non-thyroid disease (GNTD): acute severe bacterial infection (16 patients), acute myocardial infarction (22 patients), diabetic ketoacidosis (24 patients), non-ketotic hyperosmolar decompensation (8 patients), protein-calorie undernutrition (12 patients), without associated conditions or drug therapies that might have modified the thyroid hormones. These patients were evaluated at the beginning of their GNTD and after recovery. Thyroxine (T4), triiodothyronine (T3) and reverse T3 (rT3) were measured by radioimmunoassay (RIA), the TBC index by competitive analysis, the free T4 by a labeled T4 analogue and T4 by immunoradiometric analysis (IRMA). In all patients similar changes in thyroid hormones and in IRMA were found, and they returned to normal after recovery; the changes were most marked in diabetic ketoacidosis, followed by hyperosmolar decompensation and by undernutrition. When the 5 groups were evaluated together, T3 was the most commonly low value (57.3%), followed by T4 and TBC index (26.8%), free T4 (20.7%) and the free T4 index (10.9%). The level of rT3 was increased in 39% of cases. Baseline TSH was, initially, 1.05 +/- 1.05 microU/ml, and 1.36 +/- 0.85 microU/ml after recovery (p less than 0.001). It was only found to be suppressed in one patient (a female with diabetes mellitus and Graves disease); in 17 cases it had borderline values between 0.1 and 0.4 microU/ml, and in the remaining patients it was normal. GNTD induces profound changes in the thyroid functional parameters, with reductions below their normal range, including the analogue measured T4 and low TSH.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
|
254
|
Soler J, Pujol-Moix N, Bosch MA, Guanyabens C, Aventin A, Boque C, Brunet S. Acute erythroblastic leukemia. Cytological, cytogenetic and phenotypic studies in one case. Acta Haematol 1989; 82:102-5. [PMID: 2508392 DOI: 10.1159/000205293] [Citation(s) in RCA: 4] [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
We report the clinical, cytological, immunophenotypic, and cytogenetic findings in one patient with acute erythroblastic leukemia. Blast cells were identified by their reactivity with the early erythroid antibodies FA6-152 and carbonic anhydrase I. The leukemic blasts had no specific differentiating features identifying them as erythroblasts even at an ultrastructural level. Cytogenetic studies revealed multiple chromosome aberrations: 45,XX,i(11q),-16,-17,-21,+der(21)t(21;?)(q22;?),+mar 1.
Collapse
|
255
|
Virgili N, Gómez JM, Montaña E, Soler J, Castells M, Roca M. [Short-term course of Graves-Basedow disease treated with I131. Prevalence of transient hypothyroidism]. Rev Clin Esp 1988; 183:300-3. [PMID: 3217548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
256
|
Alonso MJ, De Arriaga D, Soler J. Carbamoyl-phosphate synthase in Phycomyces blakesleeanus. BIOCHIMICA ET BIOPHYSICA ACTA 1988; 955:175-86. [PMID: 3395622 DOI: 10.1016/0167-4838(88)90191-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A carbamoyl-phosphate synthase has been purified from mycelia of Phycomyces blakesleeanus NRRL 1555 (-). The molecular weight of the enzyme was estimated to be 188,000 by gel filtration. Polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate showed that the enzyme consists of two unequal subunits with molecular weights of 130,000 and 55,000. The purified enzyme has been shown to be highly unstable. The carbamoyl-phosphate synthase from Phycomyces uses ammonia and not L-glutamine as a primary N donor and does not require activation by N-acetyl-L-glutamate, but it does require free Mg2+ for maximal activity. Kinetic studies showed a hyperbolic behavior with respect to ammonia (Km 6.34 mM), bicarbonate (Km 10.5 mM) and ATP.2 Mg2+ (Km 0.93 mM). The optimum pH of the enzyme activity was 7.4-7.8. The Phycomyces carbamoyl-phosphate synthase showed a transition temperature at 38.5 degrees C. It was completely indifferent to ornithine, cysteine, glycine, IMP, dithiothreitol, glycerol, UMP, UDP and UTP. The enzyme was inhibited by reaction with 5 mM N-ethylmaleimide.
Collapse
|
257
|
Soler J, Baiget M, Rubiol E, Guañabens C, Nunes V, Estivill X, Bosch MA. [Genotype study of T receptors in the diagnosis and classification of leukemias and lymphomas]. Med Clin (Barc) 1988; 91:135-8. [PMID: 3262799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
258
|
Villabona CM, Gómez JM, Navarro MA, Montaña E, Virgili N, Bonnin R, Soler J. [Partial 21-hydroxylase deficiency: study of 5 cases]. Med Clin (Barc) 1988; 90:724-8. [PMID: 2845201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
259
|
Tapiz A, Soler J, Ferrés E, Gimeno JL. [Gingival and ocular metastasis as initial manifestation of a neoplasm of the lung: apropos of a case]. Med Clin (Barc) 1988; 90:267. [PMID: 3352374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
260
|
Montaña E, Villabona CM, Virgili N, Soler J. [Feminizing multi-secreting corticoadrenal carcinoma]. Med Clin (Barc) 1988; 90:178. [PMID: 3352354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
261
|
Alonso MJ, De Arriaga D, Soler J. Partial characterization of intracellular protease activity which participates in the inactivation of carbamyl phosphate synthase in Phycomyces blakesleeanus. JOURNAL OF ENZYME INHIBITION 1988; 2:143-50. [PMID: 3069966 DOI: 10.3109/14756368809040719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We have partially characterized an intracellular fraction from Phycomyces blakesleeanus which shows proteolytic activity. The apparent thermal inactivation constant (Kd) was 0.12 min-1 at 50 degrees C. This proteolytic fraction was split into two active fractions by ultrafiltration using a membrane with an exclusion size of 30,000. Both fractions were inhibited by phenyl methyl sulphonyl fluoride. The Ki value for the fraction with molecular weight greater than 30,000 was 0.075 mM. The fraction with molecular weight less than 30,000 inactivated the Phycomyces CPS.
Collapse
|
262
|
Casado Naranjo I, Sancho Rieger J, Martin Gonzalez R, Cerda M, Soler J. Recurrent subarachnoid haemorrhage due to spinal haemangioma. J Neurol Neurosurg Psychiatry 1987; 50:1722-3. [PMID: 3437319 PMCID: PMC1032636 DOI: 10.1136/jnnp.50.12.1722-a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
263
|
Soler J. [Contribution of molecular biology to the study of lymphoproliferative syndromes]. Med Clin (Barc) 1987; 89:735-7. [PMID: 3501052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
264
|
Brunet S, Rabella N, Aventín A, Soler J. [Acute lymphoblastic leukemia of the Burkitt's type in a patient seropositive for the human immunodeficiency virus]. Med Clin (Barc) 1987; 89:527. [PMID: 3479667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
265
|
Guañabens C, Soler J, Rubiol E, Bosch A, Badell I, Cubells J. [Mixed acute leukemia: T lymphoblastic and monoblastic]. Med Clin (Barc) 1987; 88:247-8. [PMID: 3494173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
266
|
Rua J, Rodriguez-Aparicio LB, Busto F, Soler J. Effect of light on several metabolites of carbohydrate metabolism in Phycomyces blakesleeanus. J Bacteriol 1987; 169:904-7. [PMID: 3804980 PMCID: PMC211868 DOI: 10.1128/jb.169.2.904-907.1987] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The concentrations of all metabolites studied, except fructose 1,6-bisphosphate from wild-type Phycomyces blakesleeanus, were light dependent. This photoregulation appears to be independent of the mad gene product(s) and also independent of carotene biosynthesis regulation. However, the photoregulation of glyceraldehyde 3-phosphate, 2-phosphoglycerate, and phosphoenolpyruvate may be assigned to these mad and car S gene products.
Collapse
|
267
|
Soler J, Brunet S, Bordes R, Rubiol E, Mitjavila M, Pujol-Moix N. [Acute megakaryoblastic leukemia (M7). Immunocytochemical and ultrastructural study of 2 cases]. Med Clin (Barc) 1987; 88:68-70. [PMID: 3546975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
268
|
del Valle P, de Arriaga D, Busto F, Soler J. A study of the allosteric kinetics of Phycomyces pyruvate kinase as judged by the effect of L-alanine and fructose 1,6-bisphosphate. BIOCHIMICA ET BIOPHYSICA ACTA 1986; 874:193-204. [PMID: 3778916 DOI: 10.1016/0167-4838(86)90118-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The influence of fructose 1,6-bisphosphate and L-alanine on the kinetics of pyruvate kinase (ATP:pyruvate O2-phosphotransferase, EC 2.7.1.40) from Phycomyces blakesleeanus NRRL 1555 (-) was studied at pH 7.5. By addition of fructose 1,6-bisphosphate the sigmoid kinetics with respect to phosphoenol pyruvate and Mg2+ were abolished and the velocity curves became hyperbolic. In the presence of L-alanine the positive homotropic cooperativity with respect to phosphoenol pyruvate increased with Hill coefficient values close to 4, while the sigmoid kinetics with respect to Mg2+ became hyperbolic. Fructose 1,6-bisphosphate overcomes the inhibition produced by L-alanine, the antagonism between phosphoenol pyruvate and L-alanine also being evident. Inhibition has been found at high Mg2+ concentrations, compatible with the binding of the magnesium ions to an inactive conformational state of the enzyme. The data were analysed on the basis of the two-states concerted-symmetry model of Monod, Wyman and Changeux, and the parameters of the model were calculated. Phosphoenol pyruvate and fructose 1,6-bisphosphate appeared to show exclusive binding to the active conformational state (R), whereas magnesium ions bind preferentially, by a factor of 45, to the R state. L-Alanine binds more readily to the inactive T state of the enzyme.
Collapse
|
269
|
Navarro-Lopez F, Soler J, Magriña J, Esplugues E, Pare JC, Sanz G, Betriu A. Systolic compression of coronary artery in hypertrophic cardiomyopathy. Int J Cardiol 1986; 12:309-20. [PMID: 3759268 DOI: 10.1016/0167-5273(86)90267-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
To determine the prevalence and significance of the systolic compression of the anterior descending coronary artery in hypertrophic cardiomyopathy, we studied 54 consecutive patients out of a catheterization laboratory population of 1619. This angiographic finding was found to be more prevalent (P less than 0.001) and severe in myopathic than in secondary hypertrophy. Complete systolic occlusion occurred in 5 of the 6 patients with nonobstructive cardiomyopathy showing the systolic narrowing. Severe septal squeezing was also present in these cases and the diastolic time lag to refill the distal branches reached 20-33% of the diastolic period. This subset of patients showed the least dynamic anterior wall contraction (P less than 0.001) and the highest incidence of thallium-201 perfusion defects (P less than 0.05) and of recurrent cardiac arrest (P less than 0.05). We conclude that severe systolic compression of the descending coronary artery in hypertrophic cardiomyopathy may be an angiographic marker of the myopathic hypertrophy extending to the anterior wall and might contribute to ischemia when the time to restore the distal perfusion is greatly delayed.
Collapse
|
270
|
Montaña E, Villabona CM, Virgili N, Soler J. [Rhabdomyolysis and non-ketotic hyperglycemic hyperosmolar coma]. Med Clin (Barc) 1986; 87:41-2. [PMID: 3736199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
271
|
Villabona CM, Montaña E, Ricart W, Soler J. [Primary carcinoma of the hypophysis]. Rev Clin Esp 1986; 178:464-5. [PMID: 3738037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
272
|
de Arriaga D, Montero S, Busto F, Soler J. Partial purification and some kinetic properties of glucose-6-phosphate dehydrogenase from Phycomyces blakesleeanus. Biochimie 1986; 68:291-302. [PMID: 3089321] [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]
Abstract
Glucose-6-phosphate dehydrogenase from sporangiophores of Phycomyces blakesleeanus NRRL 1555 (-) was partially purified. The enzyme showed a molecular weight of 85 700 as determined by gel-filtration. NADP+ protected the enzyme from inactivation. Magnesium ions did not affect the enzyme activity. Glucose-6-phosphate dehydrogenase was specific for NADP+ as coenzyme. The reaction rates were hyperbolic functions of substrate and coenzyme concentrations. The Km values for NADP+ and glucose 6-phosphate were 39.8 and 154.4 microM, respectively. The kinetic patterns, with respect to coenzyme and substrate, indicated a sequential mechanism. NADPH was a competitive inhibitor with respect to NADP+ (Ki = 45.5 microM) and a non-competitive inhibitor with respect to glucose 6-phosphate. ATP inhibited the activity of glucose-6-phosphate dehydrogenase. The inhibition was of the linear-mixed type with respect to NADP+, the dissociation constant of the enzyme-ATP complex being 2.6 mM, and the enzyme-NADP+-ATP dissociation constant 12.8 mM.
Collapse
|
273
|
Villabona C, Navarro MA, Montaña E, Bonnin R, Soler J. [Use of salivary testosterone in hirsutism]. Med Clin (Barc) 1986; 86:183-6. [PMID: 3959649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
274
|
Montaña E, Villabona C, Ricart W, Novials A, Soler J. [Incidental finding of suprarenal masses]. Rev Clin Esp 1986; 178:76-80. [PMID: 3520715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
275
|
Grau E, Soler J, Puig J, Brunet S, Pujol-Moix N, Rodriguez JL, Domingo-Albós A. Coincident multiple myeloma and non-Hodgkin's lymphoma with 2 serum monoclonal immunoglobulins. Acta Haematol 1986; 75:183-5. [PMID: 3092538 DOI: 10.1159/000206117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A case with features of both multiple myeloma and non-Hodgkin's lymphoma at the moment of diagnosis is presented. The patient had lytic bone lesions and biclonal gammopathy, IgM kappa and IgA kappa. In the bone marrow biopsy, there was a diffuse infiltration by atypical plasma cells coexisting with an interstitial and nodular infiltration by poorly differentiated lymphoid cells. Immunofluorescence studies showed positive staining with alpha and kappa antisera in the cytoplasm of plasma cells and with mu and kappa antisera on the surface of lymphoid cells. After the beginning of chemotherapy, the IgA kappa monoclonal protein disappeared and the IgM kappa monoclonal protein remained constant.
Collapse
|
276
|
Soler J, Estivill X, Ayats R, Brunet S, Pujol-Moix N. Chronic T-cell lymphocytosis associated with pure red call aplasia, thymoma and hypogammaglobulinemia. Br J Haematol 1985; 61:582-4. [PMID: 3933544 DOI: 10.1111/j.1365-2141.1985.tb02865.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
277
|
Teixido F, De Arriaga D, Busto F, Soler J. Cytoplasmic malate dehydrogenase from Phycomyces blakesleeanus: kinetics and mechanism. CANADIAN JOURNAL OF BIOCHEMISTRY AND CELL BIOLOGY = REVUE CANADIENNE DE BIOCHIMIE ET BIOLOGIE CELLULAIRE 1985; 63:1097-105. [PMID: 4075224 DOI: 10.1139/o85-137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The kinetics and reaction mechanism of cytoplasmic malate dehydrogenase (L-malate:NAD+ oxidoreductase, EC 1.1.1.37) from mycelium of Phycomyces blakesleeanus NRRL 1555 (-) in 0.1 M potassium phosphate buffer (pH 7.5) at 30 degrees C have been investigated. The initial rate and product inhibition studies were consistent with an ordered bi-bi mechanism that involved more than one kinetically significant ternary complex and also with the coenzyme binding first. The dissociation of the coenzyme from the enzyme-coenzyme complex appeared to be the slowest step in either direction of the reaction. The kinetic and rate constants for the individual steps of the reaction were determined.
Collapse
|
278
|
Soler J, Remacha A, Nieto M, Gimferrer E. Lymphocyte subpopulations in patients with untreated pernicious anaemia. SCANDINAVIAN JOURNAL OF HAEMATOLOGY 1985; 35:377. [PMID: 4059863 DOI: 10.1111/j.1600-0609.1985.tb01725.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
279
|
Estivill X, Soler J, Ayats R, Puig J, González D, Porta F, Domingo-Albós A, Pujol-Moix N. [Thymoma and pure red-cell aplasia. Immunologic study of 3 cases]. Med Clin (Barc) 1985; 85:133-8. [PMID: 3875771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
280
|
|
281
|
Gómez JM, Cequier A, Pérez Ayuso MJ, Gausi C, Soler J. [The thyroid and amiodarone (II). Thyroid dysfunction in patients undergoing prolonged treatment with amiodarone]. Med Clin (Barc) 1985; 84:384-7. [PMID: 3921784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
282
|
Villabona C, Novials A, Soler J, Morató J, Gómez JM, Navarro MA. [Hormonal evaluation of 27 patients with acromegaly]. Med Clin (Barc) 1985; 84:219-22. [PMID: 3920452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
283
|
Muñiz-Díaz E, Ayats R, Soler J, Bordes R, López López JJ, Pujol-Moix N. [Metastasis of breast cancer and secondary acute myeloblastic leukosis. Simultaneous bone marrow infiltration]. Med Clin (Barc) 1985; 84:195-8. [PMID: 2984488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
284
|
Soler J, O'Brien M, de Castro JT, Miguel JF, Kearney L, Goldman JM, Catovsky D. Blast crisis of chronic granulocytic leukemia with mast cell and basophilic precursors. Am J Clin Pathol 1985; 83:254-9. [PMID: 3855596 DOI: 10.1093/ajcp/83.2.254] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The authors report a patient with Ph1-positive chronic granulocytic leukemia (CGL) who developed "blast crisis" after six years of chronic phase. The presence of mast cell precursors and basophil blasts was demonstrated by ultrastructural morphology and cytochemistry. Membrane phenotype studies with monoclonal antibodies helped in the further characterization of these cells. The possible implication of these findings in the origin of mast cells and the relationship of these cells with basophils are discussed.
Collapse
|
285
|
Viader C, Soler J, Lluch M, Almoina EM, Garces M, Forteza S. [Hepatitis B and professional groups with high risks of exposure]. REVISTA DE ACTUALIDAD ESTOMATOLOGICA ESPANOLA 1984; 44:27-36. [PMID: 6242317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
286
|
Busto F, Soler J, de Arriaga D, Cadenas E. In situ behaviour of D(-)-lactate dehydrogenase from Escherichia coli. Arch Microbiol 1984; 139:255-9. [PMID: 6393891 DOI: 10.1007/bf00402010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Some kinetic properties of the D(-)-lactate dehydrogenase (EC 1.1.1.28) of Escherichia coli have been investigated. There were marked differences between the kinetic properties of the enzyme studied in situ compared with the in vitro D(-)-lactate dehydrogenase. D(-)-Lactate dehydrogenase in situ showed high substrate inhibition with pyruvate over the pH range 6.0-7.0, whereas the enzyme in vitro did not. The pH optimum for pyruvate reduction by the in situ D(-)-lactate dehydrogenase ranged between pH 7.5 and 7.8, whereas the in vitro enzyme showed its pH optimum between pH 6.8 and 7.0. The pK values of the prototropic groups that controlled the enzymatic activity shift to the acidic region for the in vitro enzyme with respect to the in situ enzyme. In vitro D(-)-lactate dehydrogenase exhibits homotropic interactions with its substrate, pyruvate and its coenzyme, NADH, at pH values ranging between pH 6.0 and 8.5, but the in situ enzyme showed homotropic interactions neither with pyruvate nor with NADH at all pH values studied.
Collapse
|
287
|
Tavares de Castro J, San Miguel JF, Soler J, Catovsky D. Method for the simultaneous labelling of terminal deoxynucleotidyl transferase (TdT) and membrane antigens. J Clin Pathol 1984; 37:628-32. [PMID: 6202720 PMCID: PMC498835 DOI: 10.1136/jcp.37.6.628] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A method for the simultaneous labelling of terminal deoxynucleotidyl transferase (TdT) and membrane antigens is described. TdT is visualised in the cell nucleus with the peroxidase-antiperoxidase (PAP) method, and the immunogold method is used in combination with monoclonal antibodies against membrane antigens. The morphology of the labelled cells is well preserved for analysis by light microscopy and the preparations obtained can be kept permanently. This method is useful for the analysis of mixed cell proliferations, particularly in leukaemias.
Collapse
|
288
|
Castañer A, Betriu A, Sanz G, Paré JC, Coll S, Soler J, Roig E, Navarro-López F. Natural history of severe left ventricular dysfunction after myocardial infarction. Chest 1984; 85:744-50. [PMID: 6723383 DOI: 10.1378/chest.85.6.744] [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: 01/21/2023] Open
Abstract
The prevalence and prognosis of severe left ventricular dysfunction after infarction was prospectively analyzed in a series of 259 male patients aged 60 years or less surviving an acute myocardial infarction. All patients underwent coronary angiography 30 days after the acute event and were followed up for a mean period of 34 months (range, 15 to 55 months). Forty-five patients (17 percent) were found to have severe left ventricular dysfunction (ejection fraction less than or equal to 30 percent). Comparison of patients with and without severe impairment of left ventricular function showed the former to have a lower cardiac index (p less than 0.001), higher left ventricular end-diastolic volume index (p less than 0.001), and a higher prevalence of three-vessel disease (p less than 0.025) and of total or subtotal occlusion of at least one coronary artery (p less than 0.025). While the occurrence of congestive heart failure was higher in patients with severe left ventricular dysfunction (p less than 0.001), the probability of developing angina was similar in both groups. Cox's regression analysis showed ejection fraction to be the only independent predictor of survival in patients with severe impairment of left ventricular function. An ejection fraction of 20 percent or less identified a subset of patients with the highest mortality (62 percent at four years), significantly different from that of patients whose ejection fraction was between 21 and 30 percent (28 percent) (p less than 0.001).
Collapse
|
289
|
Soler J, Vinzia C, Gómez JM, Morató J. [Plafibride treatment of hyperlipidemias type II and IV]. Med Clin (Barc) 1984; 82:840-2. [PMID: 6738212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
290
|
Troncoso J, Rueda D, Troncoso E, Soler J. [Complications of fracture-luxations of the hip]. Acta Orthop Belg 1984; 50:417-22. [PMID: 6475526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
291
|
Estivill X, González D, Soler J, Monés J, Pujol-Moix N. [Thymoma associated with erythroblastopenia and hypogammaglobulinemia with an increase in the T8+ lymphocyte subpopulation]. Med Clin (Barc) 1984; 82:334. [PMID: 6609288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
292
|
Gómez JM, Arbizu T, Santamaría J, Quilez A, Soler J, Peres J. [Familial male hypogonadism in spinal and bulbar muscular atrophy of late onset (Kennedy's disease). A new cause of hypogonadism]. ARCH ESP UROL 1984; 37:49-55. [PMID: 6721595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
293
|
Busto F, de Arriaga D, Soler J. The kinetic mechanism of pyruvate reduction by lactate dehydrogenase from Phycomyces blakesleeanus. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1984; 16:171-6. [PMID: 6705969 DOI: 10.1016/0020-711x(84)90068-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The kinetics of pyruvate reduction by lactate dehydrogenase from Phycomyces blakesleeanus NRRL 1555 (-) have been determined at pH 6.0. Initial rate studies performed in the pyruvate reduction direction suggest that a sequential mechanism is operating. Product inhibition studies with NAD+ and L(+)-lactate are consistent with an ordered sequential mechanism if we considered that NAD+ mimics the NADH that binds cooperatively on the enzyme and also the existence of dead-end complex responsible for substrate inhibition by pyruvate at this pH value.
Collapse
|
294
|
Gómez JM, Felip A, Castells C, Porta M, Inglés R, Soler J, Morató J. [Hyperthyroidism induced by iodine]. Med Clin (Barc) 1983; 81:376-9. [PMID: 6645698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
295
|
Busto F, de Arriaga D, Soler J. ATP, ADP and AMP on the regulation of lactate dehydrogenase activity of Phycomyces blakesleeanus. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1983; 15:73-8. [PMID: 6825905 DOI: 10.1016/0020-711x(83)90013-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
1. The inhibition of ATP, ADP and AMP on lactate dehydrogenase activity from Phycomyces blakesleeanus was investigated kinetically at pH 6.0 and 7.5. 2. At pH 6.0 ATP was more effective as inhibitor than ADP and AMP. 3. All three nucleotides bind cooperatively to the enzyme, ATP and ADP decrease the positive homotropic interactions of NADH at pH 6.0. 4. The results obtained may contribute to explain the regulation of lactate dehydrogenase from Phycomyces blakesleeanus at acid pH values.
Collapse
|
296
|
Soler J, De Arriaga D, Busto F, Cadenas E. Lactate dehydrogenase in Phycomyces blakesleeanus. Biochem J 1982; 203:383-91. [PMID: 7115293 PMCID: PMC1158241 DOI: 10.1042/bj2030383] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
1. An NAD-specific L(+)-lactate dehydrogenase (EC 1.1.1.27) from the mycelium of Phycomyces blakesleeanus N.R.R.L. 1555 (-) was purified approximately 700-fold. The enzyme has a molecular weight of 135,000-140,000. The purified enzyme gave a single, catalytically active, protein band after polyacrylamide-gel electrophoresis. It shows optimum activity between pH 6.7 and 7.5. 2. The Phycomyces blakesleeanus lactate dehydrogenase exhibits homotropic interactions with its substrate, pyruvate, and its coenzyme, NADH, at pH 7.5, indicating the existence of multiple binding sites in the enzyme for these ligands. 3. At pH 6.0, the enzyme shows high substrate inhibition by pyruvate. 3-hydroxypyruvate and 2-oxovalerate exhibit an analogous effect, whereas glyoxylate does not, when tested as substrates at the same pH. 4. At pH 7.5, ATP, which inhibits the enzyme, acts competitively with NADH and pyruvate, whereas at pH 6.0 and low concentrations of ATP it behaves in a allosteric manner as inhibitor with respect to NADH, GTP, however, has no effect under the same experimental conditions. 5. Partially purified enzyme from sporangiophores behaves in entirely similar kinetic manner as the one exhibited by the enzyme from mycelium.
Collapse
|
297
|
De Arriaga D, Soler J, Cadenas E. Influence of pH on the allosteric properties of lactate dehydrogenase activity of Phycomyces blakesleeanus. Biochem J 1982; 203:393-400. [PMID: 7115294 PMCID: PMC1158242 DOI: 10.1042/bj2030393] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
1. Lactate dehydrogenase from mycelium of Phycomyces blakesleeanus showed positive homotropic interactions with NADH at all pH values studied (pH 5.0-7.7). The calculated values for the first and last intrinsic association constants remained unaltered with pH, in contrast with the Hill coefficient value, which varied significantly, reaching its maximum values at pH 6.0 and 7.7. This suggests the hypothesis that pH regulates these homotropic effects by changes in the value of the intermediate intrinsic association constants. 2. From pH 7.2 to 7.7 lactate dehydrogenase exhibited, likewise, positive homotropic interactions with pyruvate. There were practically no changes in the first and last intrinsic association constants and in Hill coefficient values with pH. At pH values below 7.2 (pH 5.0-6.8) the enzyme showed high substrate inhibition, which was highly dependent on pH, NADH concentration and temperature. By way of substrate inhibition pH regulates, primarily, lactate dehydrogenase activity towards pyruvate, since the homotropic effects appear not to be dependent on pH. 3. Fructose 1,6-bisphosphate is a true allosteric effector of lactate dehydrogenase of Phycomyces blakesleeanus. it decreases positive co-operativity with NADH, and on the other hand pyruvate co-operativity turns into mixed co-operativity. In addition, the effector decreases the inhibitory effect caused by pyruvate.
Collapse
|
298
|
Abstract
We report a new family with familial hypocalciuric hypercalcemia (FHH) composed by 55 living members. Of 38 studied, 10 have been found to be affected by FHH. Differences between FHH and primary hyperparathyroidism are emphasized; lack of clinical features, relative hypocalciuria for the concomitant hypercalcemia and low phosphate excretion index. The PTH and urinary cAMP are normal. It is noteworthy that the disease is benign. None of our patients have undergone surgery, and all of them are asymptomatic.
Collapse
|
299
|
de Arriaga D, Soler J, Cadenas E. Effect of Na+, K+ and Li+ on pH dependence of in situ beta-galactosidase from E. coli. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1982; 14:47-52. [PMID: 6799339 DOI: 10.1016/0020-711x(82)90175-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
300
|
Soler J, Timoneda J, de Arriaga D, Grisolía S. Participation of the inner mitochondrial membrane in the inactivation of carbamyl phosphate synthase and of adenosine triphosphatase by lysosomes. Biochem Biophys Res Commun 1980; 97:100-6. [PMID: 6450592 DOI: 10.1016/s0006-291x(80)80140-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|