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Tamamizu S, Guzmán GR, Santiago J, Rojas LV, McNamee MG, Lasalde-Dominicci JA. Functional effects of periodic tryptophan substitutions in the alpha M4 transmembrane domain of the Torpedo californica nicotinic acetylcholine receptor. Biochemistry 2000; 39:4666-73. [PMID: 10769122 DOI: 10.1021/bi992835w] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Previous amino acid substitutions at the M4 domain of the Torpedo californica and mouse acetylcholine receptor suggested that the location of the substitution relative to the membrane-lipid interface and perhaps to the ion pore can be critical to the channel gating mechanism [Lasalde, J. A., Tamamizu, S., Butler, D. H., Vibat, C. R. T., Hung, B., and McNamee, M. G. (1996) Biochemistry 35, 14139-14148; Ortiz-Miranda, S. I., Lasalde, J. A., Pappone, P. A., and McNamee, M. G. (1997) J. Membr. Biol. 158, 17-30; Tamamizu, S., Lee, Y. H., Hung, B., McNamee, M. G., and Lasalde-Dominicci, J. A. (1999) J. Membr. Biol. 170, 157-164]. In this study, we introduce tryptophan substitutions at 12 positions (C412W, M415W, L416W, I417W, C418W, I419W, I420W, G421W, T422W, V423W, S424W, and V425W) along this postulated lipid-exposed segment M4 so that we can examine functional consequences on channel gating. The expression levels of mutants C412W, G421W, S424W, and V425W were almost the same as that of the wild type, whereas other mutants (M415W, L416W, C418W, I419W, I420W, T422W, and V423W) had relatively lower expression levels compared to that of the wild type as measured by iodinated alpha-bungarotoxin binding ([(125)I]-alpha-BgTx). Two positions (L416W and I419W) had less than 20% of the wild type expression level. I417W gave no detectable [(125)I]BgTx binding on the surface of oocyte, suggesting that this position might be involved in the AChR assembly, oligomerization, or transport to the cell membrane. The alphaV425W mutant exhibited a significant increase in the open channel probability with a moderate increase in the macroscopic response at higher ACh concentrations very likely due to channel block. The periodicity for the alteration of receptor assembly and ion channel function seems to favor a potential alpha-helical structure. Mutants that have lower levels of expression are clustered on one side of the postulated alpha-helical structure. Mutations that display normal expression and functional activity have been shown previously to face the membrane lipids by independent labeling studies. The functional analysis of these mutations will be presented and discussed in terms of possible structural models.
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Camacho JJ, Santiago J, Pardo A, Reyman D, Poyato JM. Transition probabilities and average cross sections for the Na2 B1pi(u) --> X1sigma(g)+ system using as excitation the 4880 A Ar+ laser line. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2000; 56:769-781. [PMID: 10794451 DOI: 10.1016/s1386-1425(99)00166-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The fluorescence spectrum of Na2 induced by the 4879.86 A line of an Argon ion laser has been analyzed with special emphasis on determination of accurate relative intensities. We have observed nineteen fluorescence series for the B1pi(u) --> X1sigma(g)+ band system. Some series are reported for the first time. The radiative transition probabilities for the observed fluorescence series were calculated using hybrid potential energy curves for the B1pi(u) and X1sigma(g)+ states constructed up to dissociation and a B-X transition dipole moment function. Radiative lifetimes for the rovibrational levels of the upper states pumped by the laser line have also been calculated. The transition probabilities and lifetimes agree with the corresponding observed measurements usually within the experimental uncertainty. From the rotational satellite structure with deltaJ' = +/- 1, +/- 2...+/- 20, for some nu''-bands of the most intense fluorescence series induced by emission from the vibrational-rotational levels: nu' = 6, J' = 43 and v' = 9, J' = 56, collision-induced transition rates and average cross sections have been obtained.
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Díaz-Atienza F, Santiago J, Navarro EM, Gurpegui M. [Psychiatric morbidity associated to enuresis in children]. ACTAS ESPANOLAS DE PSIQUIATRIA 1999; 27:384-9. [PMID: 10611562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
AIMS The objective of the study was to know the clinical and epidemiological features, including associated psychiatric morbidity, of the children seeking help for enuresis in a public child and adolescent mental health unit. SUBJECTS AND METHOD Within an exploratory, retrospective, and observational study, we reviewed the clinical charts of all the children (N= 2,315) attending the unit during a five-year period (January 1992-December 1997), collecting information on gender, age, type of enuresis, associated psychiatric morbidity, and social and family characteristics. Both the enuresis and the associated psychiatric disorders were diagnosed according to the DSM-IV criteria. RESULTS Enuresis was the reason for admission in 230 children (9.9%), whose mean (+/- SD) age was 9.0 (+/- 2.9) years (range: 5-18). The condition of single-parent family, the perception of economic difficulties, and a poor academic achievement were not associated to any type of enuresis. A 19.5 per cent of the patients with enuresis presented a co-morbid psychiatric disorder, which was significantly associated to both male gender in subjects younger than 9 and enuresis of the type secondary or mixed. DISCUSSION Most children with enuresis referred for psychiatric consultation do not present an associated psychiatric disorder. Our results on children with enuresis, in a clinical sample, are similar to those of previous studies conducted in the general population. This may mean that these patients are sent to child psychiatry services for reasons of traditional health delivery uses rather than for their psychopathological characteristics.
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Smulian JC, Vintzileos AM, Lai YL, Santiago J, Shen-Schwarz S, Campbell WA. Maternal chorioamnionitis and umbilical vein interleukin-6 levels for identifying early neonatal sepsis. THE JOURNAL OF MATERNAL-FETAL MEDICINE 1999; 8:88-94. [PMID: 10338061 DOI: 10.1002/(sici)1520-6661(199905/06)8:3<88::aid-mfm4>3.0.co;2-#] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE The purpose of this study was to determine whether elevated levels of umbilical vein IL-6 would be a better marker for early neonatal sepsis than the clinical signs of maternal chorioamnionitis. METHODS Patients delivering preterm because of spontaneous preterm labor or premature rupture of the membranes were evaluated for clinical signs of chorioamnionitis, which was defined as a temperature of > or =100.4 degrees F along with > or =2 of the following: significant maternal tachycardia (> or = 120 bpm), fetal tachycardia (> or =160 bpm), purulent discharge, uterine tenderness, and leukocytosis (WBC > or =18,000 cells/mm3). Umbilical vein blood was assayed for interleukin-6. An elevated interleukin-6 level was determined to be 25 pg/mL. Infants were evaluated for evidence of early neonatal sepsis. The abilities of clinical chorioamnionitis and interleukin-6 levels > or =25 pg/mL to predict early neonatal sepsis were compared. RESULTS There were 28 patients delivering 14 (50%) neonates with evidence for early neonatal sepsis. The incidence of suspected neonatal sepsis in women with and without clinical chorioamnionitis was 6/10 (60%) vs. 8/18 (44.4%), P = 0.43. Using receiver operator characteristic curves, the best cutoff for interleukin-6 was found to be 25 pg/mL. The compared sensitivity, specificity, and positive and negative predictive values of clinical chorioamnionitis vs. interleukin-6 levels > or =25 pg/mL for predicting early neonatal sepsis were 42.9% vs. 92.9%, 71.4% vs. 92.9%, 60% vs. 92.9%, and 55.6% vs. 92.9%, respectively. CONCLUSIONS Elevated umbilical vein levels of interleukin-6 predict those preterm infants with early sepsis better than the presence of clinical chorioamnionitis.
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Martínez Herrero E, Marcote Oliva C, Prieto Cabrera A, Rubí Cassinello G, Santiago J, Muñoz Blanco F. [Anesthetic complications of familial Mediterranean fever]. REVISTA ESPANOLA DE ANESTESIOLOGIA Y REANIMACION 1998; 45:353. [PMID: 9847647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Hinrichsen SL, Sobral S, Reis L, Assunção R, Santiago J, Araújo C, Moraes E, Vieira SM, Vieira DS, Torres V, Gazin P. [Management of AIDS during traditional hospitalization and at outpatient clinics in Recife (Brazil)]. SANTE (MONTROUGE, FRANCE) 1998; 8:315-7. [PMID: 9794046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The management of 50 AIDS patients by traditional hospital admission (25 cases) and outpatient clinics (25 cases) was studied between August and November 1995 in the Department of Infectious and Parasitic Diseases of the Federal University Hospital. The most costly items of expenditure were hospital services and consumable materials. Comparison of costs was complicated by differences in clinical status of the patients in the two groups. The choice of treatment was much more dependent on clinical status than on sociodemographic factors. Traditional hospital admission tended to be associated with the poorest patients. The rationalization of care based on cost-benefit analysis requires much future work.
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Santiago J, Bouvier R, Pouillaude JM, Thiesse P, Bergeron C, Chapuis JP, Cochat P, Lespinasse J. [Unusual presentation of nephroblastomatosis]. Arch Pediatr 1998; 5:627-32. [PMID: 9759207 DOI: 10.1016/s0929-693x(98)80166-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Nephrogenic rests generally constitute precursor lesions of Wilms' tumor. We report a case of right nephroblastomatosis with dysmorphic features. CASE REPORT An enlargement of the right kidney was incidentally discovered in a 1-year-old girl with dysmorphic features but normal psychomotor development. Combined ultrasonography and computerized tomography (CT) scan showed right cortical nephroblastomatosis. Chemotherapy using actinomycin D and vincristin was successful; however, an hyperechogenic nodule was subsequently found, necessitating a right nephrectomy. CONCLUSION The relationship between nephroblastomatosis and Wilms' tumor is discussed. This case report reminds us of the importance of a long-term follow-up including echography and CT scan in cases of nephroblastomatosis.
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Santiago J, Vallejo CG. Identification of a mitochondrial RNA polymerase in the crustacean Artemia franciscana. Arch Biochem Biophys 1998; 353:276-84. [PMID: 9606962 DOI: 10.1006/abbi.1998.0652] [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: 11/22/2022]
Abstract
Mitochondrial RNA polymerase activity has been isolated from the crustacean Artemia franciscana at two stages of development, dormant embryo and developing larva. The preparations were obtained from purified mitochondria and the polymerase activity was purified by heparin-Sepharose chromatography. The presumed polymerase has a molecular mass of about 120 kDa and a 7.4 S sedimentation coefficient. The biochemical characterization of the enzymatic reaction identified our RNA polymerase preparations as mitochondrial. The transcription initiation sites of Artemia mtDNA were characterized recently in our laboratory (J. A. Carrodeguas and C. G. Vallejo, Eur. J. Biochem. 250, 514-523, 1997). Artemia mtDNA fragments comprising the transcription initiation sites were transcribed by the partially purified polymerase preparation from the two developmental stages, but the transcription turned out to be unspecific. DNAse I footprinting analysis of a main transcription initiation site-containing DNA fragment revealed a protected region around the initiation site +1 position, when using a crude polymerase preparation. However, the protected region was not observed with the purified preparation. The results altogether suggest that a specificity factor is lost during purification. Based on the footprinting data, we suggest that the sequence from positions -6 to +13 of the main transcription initiation site in the Artemia mitochondrial DNA is the binding site of the homologous RNA polymerase holoenzyme.
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Delgado M, Santiago J. HIV/AIDS in a Puerto Rican/Dominican community: a collaborative project with a botanical shop. SOCIAL WORK 1998; 43:183-186. [PMID: 9528392 DOI: 10.1093/sw/43.2.183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Santiago J, Bonaimé V, Cheraitia Y, Robert R, Galacteros F. [Splenic infarction revealing heterozygote sickle cell trait with spherocytosis]. Arch Pediatr 1997; 4:1262-3. [PMID: 9538435 DOI: 10.1016/s0929-693x(97)82621-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Wild T, Scherbaum WA, Gleichmann H, Landt M, Santiago J, Endl J, Landgraf R, Cavallo MG, Ganz M, Pozzilli P. Comparison of a new anti-glutamic acid decarboxylase (GAD) enzyme-linked immunosorbent assay (ELISA) with radioimmunoassay methods: a multicenter study. Horm Metab Res 1997; 29:403-6. [PMID: 9288579 DOI: 10.1055/s-2007-979064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Several methods are available for the measurement of antibodies to glutamic acid decarboxylase (anti GAD). These antibodies are valuable tools for the immunodiagnosis of insulin-dependent (type 1) diabetes mellitus (IDDM) and for the assessment of risk for the future development of IDDM. We here describe a new enzyme-linked immunosorbent assay (ELISA) for the detection of anti-GAD which was tested in a multicenter study. The results of the new anti-GAD ELISA correlate well with those obtained by radioimmunoassays (RIA) and they have a higher sensitivity (69%) and specificity (98%) compared to other anti-GAD enzyme immunoassays as determined in the IDW Proficiency Test Program for the detection of GAD antibodies. The new ELISA is simple and easy to perform, with convenient handling of the reagents. Quantitative and reproducible test results are available within approximately four hours. The new anti-GAD ELISA can be used for large scale population screening to indicate a prediabetic state as well as to diagnose autoimmune diabetes in adults (LADA) and the risk for IDDM in pregnant women with gestational diabetes.
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Garesse R, Carrodeguas JA, Santiago J, Pérez ML, Marco R, Vallejo CG. Artemia mitochondrial genome: molecular biology and evolutive considerations. Comp Biochem Physiol B Biochem Mol Biol 1997; 117:357-66. [PMID: 9253173 DOI: 10.1016/s0305-0491(96)00338-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
During the last two decades an increasing amount of information has been accumulated regarding the gene structure and organization of the mitochondrial genome from various organisms. Many studies carried out mainly in mammals, have contributed to the knowledge of the basic elements involved in the replication and transcription of mitochondrial DNA. However, very little is known about these processes in invertebrates. In this review we discuss our current knowledge of the animal mitochondrial genetic system and briefly summarize the structure of the Artemia mitochondrial genome, the characteristics of its transcriptional machinery and how its expression is controlled during early development, in relation with what is known in other organisms. Artemia is the only crustacean where the mtDNA has been studied at this level of detail up to date.
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Santiago J, Mateos Colino A, Villanueva L. [A case of alveolar microlithiasis]. Arch Bronconeumol 1997; 33:55. [PMID: 9072135 DOI: 10.1016/s0300-2896(15)30679-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Santiago J, Blanco R, González-Gay MA, Mateos A, Rosés L, Andrade AS, González-Vela C. Henoch-Schönlein purpura with hemorrhagic ascites and intestinal serositis. Gastrointest Endosc 1996; 44:624-5. [PMID: 8934178 DOI: 10.1016/s0016-5107(96)70025-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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González-Gay MA, Santiago J, Monte R, Blanco R. Low-dose corticosteroids and blindness in giant cell arteritis. BRITISH JOURNAL OF RHEUMATOLOGY 1996; 35:702-3. [PMID: 8758611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Mateos-Colino A, Gonzalez-Gay MA, Cereijo MJ, Santiago J, Rabuñal R, Brañas F. [Neuro-Behçet: a follow-up of 4 cases treated with chlorambucil]. ANALES DE MEDICINA INTERNA (MADRID, SPAIN : 1984) 1995; 12:600-2. [PMID: 8679804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Four patients diagnosed with Behçet's disease developing neurologic manifestation are described. Central nervous system findings were observed in three of them and peripheral neuropathy in ther other patient. All the patients were treated with chlorambucil, 0.1-0.2 mg/kg/day as initial dose. Three of them ended the immunosuppressive therapy after a period of treatment between 12-18 months. None of the four patients suffered neurologic relapses once that the therapy with chlorambucil was started. In a similar way to other authors, we think that treatment with chlorambucil in neuro-Behçet's disease may be useful to reduce morbility related to neurologic relapses.
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Berren MR, Hill KR, Merikle E, Gonzalez N, Santiago J. Serious mental illness and mortality rates. HOSPITAL & COMMUNITY PSYCHIATRY 1994; 45:604-5. [PMID: 8088743 DOI: 10.1176/ps.45.6.604] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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González-Gay MA, Bal M, Santiago J, López Morán MS, Pulpeiro JR. [Septic trochanteric bursitis caused by Pseudomonas aeruginosa in a drug addict]. ANALES DE MEDICINA INTERNA (MADRID, SPAIN : 1984) 1994; 11:206-7. [PMID: 8043750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Gonzalez-Gay MA, Alonso MD, Bal M, Santiago J, Costa C, Bal F, Blanco R. Colonic perforation in a patient with amyloidosis and ankylosing spondylitis. J Rheumatol 1994; 21:376-7. [PMID: 8182662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Haffner SM, Frangos M, Williamson J, Santiago J, Valdez R, Aldrete G, Mykkänen L, Gruber KK, Rainwater DL. Lp(a) concentrations and phenotypes in children with insulin-dependent diabetes mellitus. Chem Phys Lipids 1994; 67-68:223-31. [PMID: 8187217 DOI: 10.1016/0009-3084(94)90141-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Subjects with insulin-dependent diabetes mellitus (IDDM) have an increased incidence of coronary heart disease. Several studies have suggested that Lp(a) levels may be increased in IDDM subjects, although these studies have been limited by the lack of information on apo(a) phenotype and urinary albumin excretion. We compared Lp(a) concentrations in 66 children with IDDM and 18 non-diabetic children; all were non-Hispanic whites and none had detectable albuminuria. Lp(a) concentrations (mg/dl) were lower in subjects with IDDM than in non-diabetic subjects (12.0 +/- 2.2 vs. 20.0 +/- 6.1, respectively), although these means were not significantly different (P = 0.276). Postpubertal subjects, particularly males, had increased Lp(a) concentrations relative to prepubertal subjects (P = 0.041). Higher apo(a) molecular weight was associated with decreased Lp(a) concentrations in both diabetic and non-diabetic subjects. However, apo(a) size was not different in diabetic and non-diabetic subjects. Lp(a) concentrations were not significantly correlated with glycosylated hemoglobin levels in diabetic subjects (r = 0.11, P = NS). We also found similar Lp(a) concentrations in postpubertal IDDM subjects compared with adult non-Hispanic white non-diabetic subjects (n = 208) from the San Antonio Heart Study, a population-based study. These observations do not support increased Lp(a) concentrations in young normoalbuminuric IDDM subjects.
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Dalen JE, Santiago J. Insuring the uninsured is not enough. ARCHIVES OF INTERNAL MEDICINE 1991; 151:860-2. [PMID: 2025133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Reif S, Jain A, Santiago J, Rossi T. Protein losing enteropathy as a manifestation of Henoch-Schönlein purpura. ACTA PAEDIATRICA SCANDINAVICA 1991; 80:482-5. [PMID: 2058402 DOI: 10.1111/j.1651-2227.1991.tb11888.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Gastrointestinal manifestations of Henoch-Schönlein purpura (HSP) commonly include abdominal pain and gastrointestinal bleeding. Hypoproteinemia and edema could be related to renal involvement. We report a 14-year-old boy with classical features of HSP manifestated with edema due to severe intestinal protein loss, measured by elevated fecal alpha 1 antitrypsin secretion. The protein losing enteropathy subsided with corticosteroid therapy.
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Salamone MC, Roisman FR, Santiago J, Satz ML, Fainboim L. Analysis of CD1 molecules on haematological malignancies of myeloid and lymphoid origin. I. Cell surface antigen expression. DISEASE MARKERS 1990; 8:265-74. [PMID: 1707769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
One hundred and ninety well-characterized acute and chronic leukaemias were studied for the expression of CD1a antigen by indirect immunofluorescence (IIF). CD1a was detected on 28 per cent of mature B cell lymphoproliferative disorders, 26 per cent of acute non-lymphoblastic leukaemias (ANLL), 21 per cent of chronic granulocytic leukaemias in blast crisis (CML-BC), 53 percent of T acute lymphocytic leukaemias (T-ALL) and in only one out of 35 common acute lymphoblastic leukaemias (c-ALL). In some cases the expression of the CD1a antigen on the surface of leukaemic cells showed a spontaneous fluctuation after a short period of incubation in vitro. CD1b and CD1c molecules were also detected on B cells and acute non-lymphoblastic leukaemias. The presence of CD1 antigens was confirmed using a dot blot assay (DBA) on the lysate of leukaemic cells.
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MESH Headings
- Antigens, CD/analysis
- Antigens, CD/classification
- Antigens, CD1
- Antigens, Differentiation/analysis
- Antigens, Differentiation/classification
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/classification
- Humans
- Leukemia/immunology
- Leukemia, B-Cell/immunology
- Leukemia, Myeloid, Accelerated Phase/immunology
- Leukemia, Myeloid, Acute/immunology
- Leukemia-Lymphoma, Adult T-Cell/immunology
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Dickey B, Berren M, Santiago J, Breslau JA. Patterns of service use and costs in model day hospital-in programs in Boston and Tucson. HOSPITAL & COMMUNITY PSYCHIATRY 1990; 41:419-24. [PMID: 2332227 DOI: 10.1176/ps.41.4.419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Patterns of service use and costs in two similar model day hospital-inn programs for psychiatric patients in publicly funded hospitals in Boston and Tucson are compared. Implementation of the programs resulted in cost savings at both sites, although mean annual costs per patient were much lower in Tucson than in Boston. Compared with patients at the Boston site, patients in Tucson had more admissions but shorter stays and fewer days in the program during a 12-month follow-up period. Site-specific differences in the programs, in local practice patterns, and in state mental health funding levels may have influenced cost differences.
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Quesada JM, Martín-Malo A, Santiago J, Hervas F, Martinez ME, Castillo D, Barrio V, Aljama P. Effect of calcitriol on insulin secretion in uraemia. Nephrol Dial Transplant 1990; 5:1013-7. [PMID: 2128950 DOI: 10.1093/ndt/5.12.1013] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
To evaluate the role of calcitriol on insulin secretion in uraemia, nine patients on maintenance haemodialysis, never treated with vitamin D nor with calcium-channel blockers, were studied. Baseline glucose, insulin, C peptide, calcium, intact PTH, and calcitriol serum values were measured, and after an oral load of 75 g glucose, insulin and C peptide were also determined at 15, 30, 45, 60, and 120 min. Following 14 days of treatment with oral calcitriol (0.5 microgram/day), the same study protocol was applied. Serum calcitriol values, which were low as expected, increased after therapy, but did not reach the values observed in healthy controls. Despite no change in total serum calcium, intact PTH values decreased significantly (182 vs 88.3 ng/ml, P less than 0.003). Baseline serum insulin was significantly increased after calcitriol (7.5 vs 35 microU/ml, P less than 0.001). Similarly, an enhancement in insulin secretion following calcitriol was observed at 15 min (34 vs 70, P less than 0.01) and 30 min (57 vs 96 microU/ml, P less than 0.01). Computation of the total area under the curve confirmed these results. Changes in C peptide profile paralleled those described for insulin. These data confirm that vitamin D modulates pancreatic beta-cell secretion and suggest that calcitriol may regulate insulin release in uraemic patients.
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