126
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Pérez B, Mateos E. Effect of photoperiod on semen production and quality in bucks of Verata and Malagueña breeds. Small Rumin Res 1996. [DOI: 10.1016/s0921-4488(96)00887-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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127
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Gamir MA, Mallea I, Marco J, Pérez B, Blay L. [Cytogenetic study in otosclerosis]. ACTA OTORRINOLARINGOLOGICA ESPANOLA 1996; 47:119-20. [PMID: 8695199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In 50 patients (32 females and 18 males) with otosclerosis who underwent stapedectomy, a cytogenetic study of chromosomal abnormalities was made. No description of G banding in patients with otosclerosis was found in the literature. No chromosomal abnormalities were found in the karyotype using this technique.
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128
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Batista J, Stüsser R, Saéz F, Pérez B. Effect of policosanol on hyperlipidemia and coronary heart disease in middle-aged patients. A 14-month pilot study. Int J Clin Pharmacol Ther 1996; 34:134-7. [PMID: 8705091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
To find out the long-term lipid-lowering efficacy of policosanol in low dose and its influence in the evolution of coronary heart disease (CHD), a pilot clinical randomized single-blind, placebo-controlled trial was conducted on 23 middle-aged outpatients, with well documented diagnosis of chronic CHD and primary or marginal hyperlipidemia. Twelve patients received policosanol tablets of 1 mg twice daily, and 11 patients placebo in the same fashion, followed with rest and stress electrocardiogram (ECG), and serum lipid blood samples by 14 months. The treated group showed significant reduction of total cholesterol in 14.8% (p < or = 0.001) and of low density lipoprotein (LDL) in 15.6% (p < or = 0.05), against non significant increase of 3% and 5.5%, respectively, in the placebo group. No patient had new coronary events in both groups, but 5 of 12 treated patients exhibited a clinical tendency to improve their CHD, in comparison with no one in the placebo group (p < or = 0.05). These findings show the effectiveness of low dose of policosanol lowering total cholesterol and LDL levels and suggest a CHD improvement in middle-aged patients with primary or marginal hyperlipidemia.
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129
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Pérez B, Desviat LR, De Lucca M, Schmidt B, Loghin-Grosso N, Giugliani R, Pires RF, Ugarte M. Mutation analysis of phenylketonuria in south Brazil. Hum Mutat 1996; 8:262-4. [PMID: 8889586 DOI: 10.1002/(sici)1098-1004(1996)8:3<262::aid-humu10>3.0.co;2-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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130
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de las Heras ME, Pérez B, Arrazola JM, Rocamora A, Ledo A. Self-healing cutaneous mucinosis. Dermatology 1996; 192:268-70. [PMID: 8726646 DOI: 10.1159/000246382] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Self-healing juvenile cutaneous mucinosis is a new entity distinct from previously described forms of cutaneous mucinosis. We present a new case in a 26-year-old female patient who began abruptly with a papular eruption, involving the scalp, face, neck and trunk, accompanied by periarticular papules on the hands and arthralgias. No associated disease could be detected and the lesions resolved spontaneously within a few months. This is the first case described in an adult patient.
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131
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Desviat LR, Pérez B, Ugarte M. Molecular basis of non-PKU hyperphenylalaninaemia in Spain: prevalence of A403V, a mutation with high residual activity. J Inherit Metab Dis 1996; 19:227-30. [PMID: 8739972 DOI: 10.1007/bf01799436] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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132
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Herrera MF, López-Graniel CM, Saldaña J, Gamboa-Domínguez A, Richaud-Patín Y, Vargas-Vorackova F, Angeles-Angeles A, Llorente L, Castillo C, Pérez B, Rivera R, González O, Rull J. Papillary thyroid carcinoma in Mexican patients: clinical aspects and prognostic factors. World J Surg 1996; 20:94-9; discussion 99-100. [PMID: 8588421 DOI: 10.1007/s002689900017] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The present study characterizes papillary thyroid carcinoma (PTC) in a Mexican patient sample and evaluates potential prognostic factors for recurrence. Clinical records of 229 patients with PTC were analyzed. Surgical specimens were rereviewed and DNA ploidy determined. Cox logistic regression was used to explore prognostic factors. Mean age +/- SD of the patients was 42 +/- 16 years, with a male/female ratio of 24:205. A thyroid mass was the initial manifestation in 99%. Extrathyroid invasion occurred in 45% and nodal metastases in 38%. Mean size +/- SD of the tumors was 3 +/- 2 cm. By flow cytometry 88% of the tumors were DNA euploid and 12% aneuploid. Complete tumor resection was achieved in 83% with an operative mortality of 0.4%. Postoperative hormone suppression was administered in 65% and remnant 131I thyroid ablation in 84%. The 10-year recurrence-free survival was 85%. In the group of patients with tumors totally removed and without distant metastases, none of the 14 evaluated variables demonstrated statistical significance as an independent prognostic factor for recurrence. However, the group of patients in whom a combination of the following factors was present--age > or = 40 years, tumor size > or = 3 cm, local invasion, and lymph node metastases--showed a higher incidence of tumor recurrence.
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133
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Miralles ES, Núñez M, De Las Heras ME, Pérez B, Moreno R, Ledo A. Pityriasis rubra pilaris and human immunodeficiency virus infection. Br J Dermatol 1995; 133:990-3. [PMID: 8547057 DOI: 10.1111/j.1365-2133.1995.tb06939.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Recently, the occurrence of pityriasis rubra pilaris (PRP) has been reported in patients with HIV infection. It presents different clinical features, and has a poorer prognosis, than the classical adult type of PRP. We report the occurrence of severe PRP in an HIV-infected patient, and review the previously reported cases of this association. We propose the designation of a new category of PRP (type 6), characterized by the presence of HIV infection, usually without immunosuppression, a poor prognosis and response to treatment, and the development of nodulocystic and lichen spinulosus lesions.
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Abstract
PURPOSE To evaluate the prevalence of autoimmune thyroid disease and thyroid dysfunction in patients with primary Sjögren's syndrome. PATIENTS AND METHODS Thyroid function of 33 patients with primary Sjögren's syndrome was clinically and biochemically evaluated. Thyroid hormones and autoantibodies against thyroid peroxidase, thyroglobulin, and thyroid hormones were measured. RESULTS Autoimmune thyroid disease and thyroid dysfunction were found in 15 cases (45%): autoimmune thyroiditis in 8 (24%); autoimmune hyperthyroidism in 2 (6%); and reversible iodine-induced hypothyroidism in the remaining 5 (15%). One or more of the evaluated autoantibodies were detected in 8 euthyroid patients (24%). Overall, the prevalence of autoantibodies against thyroid peroxidase, thyroglobulin, thyroxine, and triiodothyronine was 45%, 18%, 42%, and 36%, respectively. CONCLUSIONS The high prevalence of autoimmune thyroid disease and thyroid dysfunction found in primary Sjögren's syndrome, using sensitive immunologic and thyroid function tests, suggest that both diseases are more frequently associated than it was previously thought, and should be sought clinically and by laboratory tests in all patients with primary Sjögren's syndrome.
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135
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Desviat LR, Pérez B, De Lucca M, Cornejo V, Schmidt B, Ugarte M. Evidence in Latin America of recurrence of V388M, a phenylketonuria mutation with high in vitro residual activity. Am J Hum Genet 1995; 57:337-42. [PMID: 7668259 PMCID: PMC1801570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Phenylketonuria mutation V388M is frequent in the Iberian Peninsula. In vitro, the V388M mutant enzyme has similar immunoreactive protein and phenylalanine hydroxylase mRNA and has 43% residual activity, which correlates well with the mild phenotype exhibited by the homozygous patients. In Spain it has been detected in 5.7% of the mutant alleles and is always associated with haplotype 1.7. This mutation is also present in high frequency in some Latin American countries (Brazil, 9%; Chile, 13%). It is interesting that in Chile most of the alleles bearing this mutation carry haplotype 4.3, although in Brazil it is found only on the background of haplotype 1.7. The origin of V388M in Spain on haplotype 1.7 and in Chile on haplotype 4.3 is clearly different. Recurrence is the most plausible explanation, because the mutation involves a CpG dinucleotide, and a recombination event transferring the mutation from haplotype 1 to 4 is unlikely.
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136
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Pérez B, Gómez MI, Sánchez E, Muñoz E, Ledo A. Pachydermodactyly: a case report. J Dermatol 1995; 22:43-5. [PMID: 7897024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Pachydermodactyly is an uncommon variant of digital fibromatosis that has previously been related to knuckle pads. It is a benign condition that needs no investigation for an underlying systemic disease. We present a new case of pachydermodactyly and comment on the available literature.
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137
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138
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Pérez B, Desviat LR, Ugarte M. Expression analysis of mutation P244L, which causes mild hyperphenylalaninemia. Hum Mutat 1995; 5:188-90. [PMID: 7749420 DOI: 10.1002/humu.1380050217] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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139
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Pérez B, Mateos E. Seasonal variations in plasma testosterone levels in Verata and Malagueña bucks. Small Rumin Res 1995. [DOI: 10.1016/0921-4488(94)00016-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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140
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Herrera MF, López CM, Saldaña J, Pérez B, Rivera R, González O, Angeles A, Letayf V. [Trends in thyroid surgery at the Instituto Nacional de la Nutrición Salvador Zubirán]. REVISTA DE INVESTIGACION CLINICA; ORGANO DEL HOSPITAL DE ENFERMEDADES DE LA NUTRICION 1995; 47:13-9. [PMID: 7777711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The diagnosis and treatment of thyroid disease has significantly changed with time. With the aim of analysing changes in thyroid surgery in our institution, a representative sample of patients from the first three years in four decades (1960-1992) were comparatively analysed. In the sixties, the diagnosis of thyroid cancer was made during surgery; by contrast, this diagnosis was correctly done by fine needle aspiration (FNA) in most patients of the last decade. Thyroid lobectomy, infrequently used in the treatment of differentiated thyroid carcinoma in earlier times, has now been abandoned and currently most patients undergo total or near-total thyroidectomy. Complications such as hypoparathyroidism and recurrent laryngeal nerve paralysis have importantly decreased with time and were not seen in the last decade. A trend toward an earlier diagnosis of thyroid carcinoma was also observed. In summary, the number of thyroidectomies for benign diseases has been importantly reduced by the use of FNA with the proportional increment of surgery for malignant disease.
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141
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Miralles ES, Nuñez M, Pérez B, Ledo A. Minocycline hydrochloride hyperpigmentation complicating treatment of pyoderma gangrenosum. J Dermatol 1994; 21:965-7. [PMID: 7868770 DOI: 10.1111/j.1346-8138.1994.tb03320.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Minocycline-associated hyperpigmentation is an uncommon side effect. We report the case of a patient with pyoderma gangrenosum successfully treated with oral minocycline but complicated by marked hyperpigmentation in his pyoderma gangrenosum and acne scars. One of the clinical forms of minocycline hyperpigmentation includes dark-blue or black macules in depressed acne scars or other sites of skin inflammation; this pattern seems to be independent of the total cumulative dose and the skin process.
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142
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Pérez B, Desviat LR, De Lucca M, Ugarte M. Spectrum and origin of phenylketonuria mutations in Spain. ACTA PAEDIATRICA (OSLO, NORWAY : 1992). SUPPLEMENT 1994; 407:34-6. [PMID: 7766951 DOI: 10.1111/j.1651-2227.1994.tb13444.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In order to characterize the molecular heterogeneity of phenylalanine hydroxylase deficiencies in the Spanish population, 37 PKU patients were initially screened for 16 known European mutations. For the remaining unidentified alleles, we used a combined strategy based on single strand conformation polymorphism analysis and DNA sequencing. Overall, a total of 15 different mutations were found in our sample, which account for 62% of the total mutant alleles. We also investigated the association between the mutations, haplotypes and variable number of tandem repeats described on the phenylalanine hydroxylase gene. In addition, we analyzed the geographical distribution in Spain of the two most prevalent mutations in our population: IVS10 and I65T.
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143
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Macià J, Gómez X, Pérez B, Esquerda A, Parra R, Callao V. Prognostic value of tumor necrosis factor in plasma of patients with chronic lymphoproliferative syndromes: preliminary results. Blood 1994; 84:989-91. [PMID: 8043883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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144
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Miralles ES, Pérez B, Núñez M, Ledo A. Low-dose recombinant interferon alfa-2a treatment for classic Kaposi's sarcoma. ARCHIVES OF DERMATOLOGY 1994; 130:799-801. [PMID: 8043141 DOI: 10.1001/archderm.1994.01690060137023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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145
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Martínez-Pardo M, Colmenares AR, García MJ, Pérez B, Desviat LR, Ugarte M. Phenotype distribution in the Spanish phenylketonuria population and related genotypes. J Inherit Metab Dis 1994; 17:366-8. [PMID: 7807955 DOI: 10.1007/bf00711832] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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146
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Pérez B, Desviat LR, García MJ, Ugarte M. Different phenotypic manifestations associated with identical phenylketonuria genotypes in two Spanish families. J Inherit Metab Dis 1994; 17:377-8. [PMID: 7807962 DOI: 10.1007/bf00711839] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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147
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Gómez MI, Pérez B, Azaña JM, Núñez M, Ledo A. Eruptive syringoma: treatment with topical tretinoin. Dermatology 1994; 189:105-6. [PMID: 8003779 DOI: 10.1159/000246803] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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148
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Oletta CA, Pérez B, Zlotnik H. Identification of Streptococcus mutans from human dental plaque using the RapID STR System. PUERTO RICO HEALTH SCIENCES JOURNAL 1993; 12:291-3. [PMID: 8140210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The identification of Streptococcus mutans from dental plaque samples with rapid systems, such as the RapID STR System, has not been recommended by the manufacturers. In this study, we evaluated the use of the above method for the identification of 34 human dental plaque Streptococcus mutans strains which had been identified previously by conventional procedures. The results obtained demonstrate that 88.2% of the Streptococcus mutans strains tested were identifiable by the rapid method.
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García Regueiro JA, Pérez B, Casademont G. Determination of clenbuterol and salbutamol in urine by capillary gas chromatography with capillary columns of 100 microns. J Chromatogr A 1993; 655:73-6. [PMID: 8308095 DOI: 10.1016/0021-9673(93)87012-b] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A method to determine clenbuterol and salbutamol in calf urine is described. Two independent extraction procedures using Extrelut (clenbuterol) and octadecylsilica (salbutamol) were used; the extracts obtained were mixed and purified over a cyanopropyl minicolumn. Trimethylsilyl derivatives were prepared and analysed by GC-MS in selected-ion monitoring mode using a fused-silica open tubular capillary column, 10 m x 100 microns coated with 5% phenylmethylsilicone. Splitless injection was optimized to achieve low percentage residual standard deviation of absolute areas. The best conditions were: injection volume 0.5 microliter, column head pressure 22 p.s.i. (1 p.s.i. = 6894.76 Pa), inlet temperature 250 degrees C and glass liner volume 250 microliters. The recoveries of the complete procedure were in the range 50-60% for both compounds.
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150
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Desviat LR, Pérez B, Ugarte M. Phenylketonuria in Spain: RFLP haplotypes and linked mutations. Hum Genet 1993; 92:254-8. [PMID: 8104860 DOI: 10.1007/bf00244468] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In order to investigate the molecular basis of phenylketonuria (PKU) in Spain, we analyzed the restriction fragment length polymorphism (RFLP) haplotypes and common mutations in the phenylalanine hydroxylase (PAH) gene in 32 unrelated Spanish PKU families. The distribution of RFLP haplotypes differs from that of northern Europe. Mutant haplotypes 2 and 3 were completely absent in our sample. Approximately 65% of the mutant alleles are confined to three RFLP haplotypes, namely haplotypes 1, 6 and 9, also frequently found in other Mediterranean populations. We screened for previously described PKU mutations using the polymerase chain reaction and allele-specific oligonucleotides, and found IVS10, I65T, E280K and P281L as the major mutations, representing 41% of the PKU alleles. Other mutations found were Y414C, and a new one, P244L. Mutations R408W and IVS12, prevalent in northern Europe, as well as others present in southern European populations (R252W, R261Q, L249F) were not detected in our sample. Our results reveal the genetic heterogeneity present in the Spanish PKU population, which shows similarities to others of Mediterranean origin.
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