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1.
J Correct Health Care ; 29(4): 275-281, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37267214

RESUMEN

Millions of dollars are spent annually in private litigation against jails. This article analyzes a novel dataset developed from dockets and reports of cases filed against jails by the estates of individuals who died in jail custody. The total amount of plaintiffs' awards represented in the sample was over $292,234,224. Cases attributing the cause of death to officer use of force had the highest average award ($2,243,079). Our findings suggest that suicide is still the most common cause of death for people in jail custody. Yet complications from a physical illness were not far behind, and nearly 20% of all cases in the sample were drug or alcohol related. In the first 24 hours of custody, people in jail were most at risk of drug-related deaths and suicide.


Asunto(s)
Cárceles Locales , Responsabilidad Legal , Prisioneros , Humanos , Cárceles Locales/economía , Cárceles Locales/legislación & jurisprudencia , Cárceles Locales/estadística & datos numéricos , Prisioneros/legislación & jurisprudencia , Prisioneros/estadística & datos numéricos , Responsabilidad Legal/economía , Causas de Muerte , Factores de Tiempo
2.
Sci Rep ; 6: 25498, 2016 05 05.
Artículo en Inglés | MEDLINE | ID: mdl-27149682

RESUMEN

Mg(11)B2 has a great application prospect in the superconducting coils for fusion reactor as the "low activation superconductors". The un-doped Mg(11)B2 and Cu-doped Mg(11)B2 bulks using (11)B as a boron precursor were fabricated by low-temperature sintering in present work. It was found that the prepared Mg(11)B2 low activation superconductors exhibit better Jc performance than all of other Mg(11)B2 samples reported in previous studies. As for Cu doped Mg(11)B2, minor Cu addition can obviously improve the Mg(11)B2 grain crystallization and reduce the amount of MgO impurity. Hence, improved grain connectivity and higher Jc at low fields is obtained in Cu doped Mg(11)B2 samples. For un-doped samples, refined grains and more MgO impurity with proper size brought about more flux pinning centers, resulting in better Jc performance at high fields.

3.
J Extra Corpor Technol ; 47(2): 83-9, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26405355

RESUMEN

Gaps remain in our understanding of the contribution of bypass-related practices associated with red blood cell (RBC) transfusions after cardiac surgery. Variability exists in the reporting of bypass-related practices in the peer-reviewed literature. In an effort to create uniformity in reporting, a draft statement outlining proposed minimal criteria for reporting cardiopulmonary bypass (CPB)- related contributions (i.e., RBC data collection/documentation, clinical considerations for transfusions, equipment details, and clinical endpoints) was presented in conjunction with the American Society of ExtraCorporeal Technology's (AmSECT's) 2014 Quality and Outcomes Meeting (Baltimore, MD). Based on presentations and feedback from the conference, coauthors (n = 14) developed and subsequently voted on each proposed data element. Data elements receiving a total of 4 votes were dropped from further consideration, 5-9 votes were considered as "Recommended," and elements receiving ≥10 votes were considered as "Mandatory." A total of 52 elements were classified as mandatory, 16 recommended, and 14 dropped. There are 8 mandatory data elements for RBC data collection/documentation, 24 for clinical considerations for transfusions, 13 for equipment details, and 7 for clinical endpoints. We present 52 mandatory data elements reflecting CPB-related contributions to RBC transfusions. Consistency of such reporting would offer our community an increased opportunity to shed light on the relationship between intra-operative practices and RBC transfusions.


Asunto(s)
Procedimientos Médicos y Quirúrgicos sin Sangre/métodos , Puente Cardiopulmonar/métodos , Consenso , Transfusión de Eritrocitos/métodos , Notificación Obligatoria , Adulto , Procedimientos Médicos y Quirúrgicos sin Sangre/normas , Procedimientos Quirúrgicos Cardíacos/estadística & datos numéricos , Puente Cardiopulmonar/normas , Transfusión de Eritrocitos/normas , Humanos
4.
Artículo en Inglés | MEDLINE | ID: mdl-24109411

RESUMEN

In the cation of the title salt {systematic name: 4-[bis-(4-fluoro-phen-yl)meth-yl]-1-[(2E)-3-phenyl-prop-2-en-1-yl]piperazin-1-ium hydrogen maleate}, C26H27F2N2 (+)·C4H3O4 (-), the protonated piperazine ring is in a chair conformation. The dihedral angle between the 4-fluoro-phenyl rings is 68.2 (2)°. An intra-molecular O-H⋯O hydrogen bond occurs in the anion. In the crystal, N-H⋯O, C-H⋯O and C-H⋯F inter-actions are observed, which link the ions into [001] chains.

5.
Somatosens Mot Res ; 28(3-4): 102-9, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-22114950

RESUMEN

Tactile detection and two-point discrimination tests are commonly used in neurological examinations. However, questions remain about the influence of both body and patient characteristics on test thresholds. The left side of the body has sometimes been reported more tactilely sensitive than the right, and females are said to be more sensitive than males. We measured tactile detection and two-point discrimination thresholds on the finger, palm, and forehead of a large sample of young adults (N=171), examining laterality and sex differences, and the effects of body surface area (BSA) and body fat ratio (BFR). In tactile detection, there were no effects of laterality, BSA, or BFR, although females had lower thresholds than males. In two-point discrimination, there was an effect of laterality, with lower thresholds on the left side. This probably reflects hemispheric spatial processing differences. A significant BFR effect implies that subcutaneous fat affects skin deformation, but there were no effects of sex or BSA. The two-point discrimination findings differ in several respects from recent findings using grating orientation discriminations. A small positive correlation between the tasks, falling far short of test-retest reliabilities, indicates that they use largely disjoint but partially overlapping processes.


Asunto(s)
Composición Corporal , Superficie Corporal , Lateralidad Funcional/fisiología , Umbral Sensorial/fisiología , Caracteres Sexuales , Tacto/fisiología , Adulto , Femenino , Humanos , Masculino , Estimulación Física/métodos , Adulto Joven
6.
Percept Psychophys ; 69(6): 913-22, 2007 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-18018972

RESUMEN

In two studies, we found that dot enumeration tasks resulted in shallow-sloped response time (RT) functions for displays of 1-4 dots and steep-sloped functions for displays of 5-8 dots, replicating results implicating subitizing and counting processes for low and high ranges of dots, respectively. Extracting number from a specific type of bar graph within the same numerical range produced a shallow-sloped but scallop-shaped RT function. Factor analysis confirmed two independent subranges for dots, but all bar graph values defined a unitary factor. Significantly, factor scores and asymmetries both showed correlations of bar graph recognition to dot subitizing but not to dot counting, strongly suggesting that subitizing was used in both enumeration of low numbers of dots and bar graph recognition. According to these results, subitizing appears to be a nonverbal process operating flexibly in either additive or subtractive fashion on analog quantities having spatial extent, a conclusion consistent with a fast-counting model of subitizing but not with other models of the subitizing process.


Asunto(s)
Matemática , Tiempo de Reacción , Fijación Ocular , Humanos , Estudios Prospectivos
7.
Int J Immunogenet ; 34(3): 143-7, 2007 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-17504501

RESUMEN

This study presents a clinical report of the Finnish chromosome t(18q; 10p) translocation family with an overview of eight other selected immunoglobulin A (IgA)-deficient 18q deletion (18q-) patients from seven published articles. The family members show features common to 18q- syndrome such as mental retardation, multiple facial dysmorphism, foot/hand deformities, abnormal myelination of brain white matter, and a spectrum of immunological/infectious disorders including IgA deficiency (IgAD). Genotype-phenotype correlation study of the unbalanced t(18q-; 10p+) translocation family members and other 18q- syndrome reports led to definition of a potential susceptibility gene locus for IgAD at distal region of 18q22.3-q23 between markers D18S812-18qter. The haplo-insufficiency of the 18q22.3-q23 gene region is suggested to be a cause of the IgAD phenotype in 18q- individuals. This 7 Mb IgAD critical region shows significant association with susceptibility region for celiac disease that is frequently connected to IgAD.


Asunto(s)
Cromosomas Humanos Par 18 , Deficiencia de IgA/genética , Translocación Genética , Adulto , Niño , Preescolar , Deleción Cromosómica , Cromosomas Humanos Par 10 , Familia , Femenino , Finlandia , Predisposición Genética a la Enfermedad , Humanos , Deficiencia de IgA/congénito , Hibridación Fluorescente in Situ , Discapacidad Intelectual/genética , Masculino
8.
Eur J Med Chem ; 42(8): 1069-75, 2007 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-17350734

RESUMEN

The 1,6-bis(benzimidazol-2-yl)-3,4-dithiahexane (1) ligand and its palladium(II) chloride complex [(micro(2)-SCH(2)CH(2)NHNCC(6)H(4))PdCl](2)xC(2)H(5)OH (2) have been synthesised and characterised by spectroscopical methods. The crystal structure of the triclinic title compound (P-1 (no. 2), a=879.6(1) pm, b=984.4(1) pm, c=1471.8(2) pm; alpha=94.330(6) degrees , beta=98.546(6) degrees , gamma=99.258(7) degrees , Z=2) was solved from X-ray single crystal diffraction data. In the binuclear complex, each palladium atom is coordinated in a slightly distorted square-planar arrangement by one nitrogen, two bridging sulphurs and one terminal chlorine atom. Molar conductivity, FT-Raman, FT-IR (mid-i.r., far-i.r.), (1)H and (13)C NMR spectra of the complex (2) have been recorded and show a good accordance with the square-planar geometry. The antimicrobial and antifungal activities of palladium(II) chloride, free ligand, its hydrochloride salt and the complex were evaluated using the disk diffusion method in dimethyl sulfoxide (DMSO) as well as the minimal inhibitory concentration (MIC) the dilution method, against 10 bacteria and five yeast cultures. The results for the antibacterial from the disk diffusion method were assessed in side-by-side comparison with those for penicillin-g, ampicillin, cefotaxime, vancomycin, ofloxacin and tetracycline. Antifungal activities were referenced with nystatin, ketaconazole, and clotrimazole, commercial antifungal agents. The data from the dilution procedure were compared with gentamycin as antibacterial and nystatin as antifungal agent, respectively. In most cases, the compounds tested showed broad-spectrum (Gram positive and Gram negative) activities that were comparatively more active, or as potent as referenced pharmaceutical agents. The palladium complex has the potential to generate new kind of metabolites by displaying high affinities for most of the receptors compared with palladium chloride, free ligand and its hydrochloride salt.


Asunto(s)
Antiinfecciosos/química , Compuestos Organometálicos/farmacología , Paladio/farmacología , Análisis Espectral , Antiinfecciosos/farmacología , Bacterias/efectos de los fármacos , Pruebas Antimicrobianas de Difusión por Disco , Espectroscopía de Resonancia Magnética , Pruebas de Sensibilidad Microbiana , Estructura Molecular , Compuestos Organometálicos/uso terapéutico , Paladio/uso terapéutico , Espectroscopía Infrarroja por Transformada de Fourier , Espectrometría Raman , Levaduras/efectos de los fármacos
9.
Eur J Med Chem ; 42(2): 205-13, 2007 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-17189664

RESUMEN

2,6-Bis(benzimidazol-2-yl)pyridine (L) ligand and complexes [M(L)Cl(2)] and [Fe(L)(2)](ClO(4))(2) (M=Zn, Cd, Hg) have been synthesized. The geometries of the [M(L)Cl(2)] complexes were derived from theoretical calculation in DGauss/DFT level (DZVP basis set) on CACHE. The central M(II) ion is penta-coordinated and surrounded by N(3)Cl(2) environment, adopting a distorted trigonal bipyramidal geometry. The ligand is tridentate, via three nitrogen atoms to metal centre and two chloride ions lie on each side of the distorted benzimidazole ring. In the [Fe(L)(2)](ClO(4))(2) complex, the central Fe(II) ion is surrounded by two (3N) units, adopting a octahedral geometry. The elemental analysis, molecular conductivity, FT-Raman, FT-IR (mid-, far-IR), (1)H, and (13)C NMR were reported. The antimicrobial activities of the free ligand, its hydrochloride salt, and the complexes were evaluated using the disk diffusion method in dimethyl sulfoxide (DMSO) as well as the minimal inhibitory concentration (MIC) dilution method, against 10 bacteria and the results compared with that for gentamycin. Antifungal activities were reported for Candida albicans, Kluyveromyces fragilis, Rhodotorula rubra, Debaryomyces hansenii, Hanseniaspora guilliermondii, and the results were referenced against nystatin, ketaconazole, and clotrimazole antifungal agents. In most cases, the compounds tested showed broad-spectrum (Gram positive and Gram negative bacteria) activities that were either more effective than or as potent as the references. The binding of two most biologically effective compounds of zinc and mercury to calf thymus DNA has also been investigated by absorption spectra.


Asunto(s)
Antibacterianos/síntesis química , Antifúngicos/síntesis química , Quelantes/síntesis química , Metales Pesados , Compuestos Organometálicos/síntesis química , Antibacterianos/química , Antibacterianos/farmacología , Antifúngicos/química , Antifúngicos/farmacología , Cadmio , Quelantes/química , Pruebas Antimicrobianas de Difusión por Disco , Compuestos Ferrosos/síntesis química , Compuestos Ferrosos/química , Compuestos Ferrosos/farmacología , Ligandos , Espectroscopía de Resonancia Magnética , Pruebas de Sensibilidad Microbiana , Modelos Moleculares , Estructura Molecular , Compuestos Organomercuriales/síntesis química , Compuestos Organomercuriales/química , Compuestos Organomercuriales/farmacología , Compuestos Organometálicos/química , Compuestos Organometálicos/farmacología , Espectroscopía Infrarroja por Transformada de Fourier , Espectrometría Raman , Relación Estructura-Actividad , Zinc
11.
Neurology ; 59(4): 630-3, 2002 Aug 27.
Artículo en Inglés | MEDLINE | ID: mdl-12196666

RESUMEN

The fetal valproate syndrome (FVS) is characterized by distinctive facial appearance, major and minor malformations, and developmental delay. Generally, only a small proportion of prenatally exposed children are affected. The authors describe three families in whom the occurrence of FVS in all the siblings strongly suggests hereditary susceptibility to valproic acid-induced adverse outcome. The risk for recurrence in a subsequent pregnancy may be high and should be taken into account in the counseling of parents and in considering drug treatment.


Asunto(s)
Anomalías Inducidas por Medicamentos , Anomalías Múltiples/inducido químicamente , Discapacidades del Desarrollo/inducido químicamente , Cara/anomalías , Predisposición Genética a la Enfermedad , Ácido Valproico/efectos adversos , Anomalías Inducidas por Medicamentos/diagnóstico , Anomalías Múltiples/diagnóstico , Niño , Preescolar , Discapacidades del Desarrollo/diagnóstico , Epilepsia/tratamiento farmacológico , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Intercambio Materno-Fetal , Embarazo , Complicaciones del Embarazo/tratamiento farmacológico , Síndrome
12.
Neuropediatrics ; 33(2): 100-4, 2002 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-12075493

RESUMEN

PEHO syndrome (progressive encephalopathy, peripheral edema, hypsarrhythmia, and optic atrophy) is a neurodegenerative disorder first characterized in Finnish patients. Subsequent reports have occasionally identified cases of PEHO occurring in some other countries. We describe two Dutch children who represent the first reported cases with PEHO syndrome from western Europe. Both of these children showed typical characteristics of the syndrome, including generalized hypotonia and edema of their faces and extremities, profound psychomotor retardation, progressive cerebellar atrophy, and severe epilepsy which initially started as infantile spasms. Our experience has shown that distinguishing cases with true PEHO from those with other, clinically similar disorders requires a firm demonstration of both the presence and the progress of typical neuroradiological findings. Our present cases suggest that 1) PEHO syndrome is not limited to Finnish heritage, and that 2) many more patients with PEHO could be identified with increased knowledge of the syndrome.


Asunto(s)
Daño Encefálico Crónico/complicaciones , Daño Encefálico Crónico/diagnóstico , Edema/complicaciones , Atrofia Óptica/complicaciones , Enfermedades Vasculares Periféricas/complicaciones , Espasmos Infantiles/complicaciones , Preescolar , Progresión de la Enfermedad , Femenino , Humanos , Lactante , Imagen por Resonancia Magnética , Masculino , Síndrome
13.
J Neuropathol Exp Neurol ; 60(5): 483-92, 2001 May.
Artículo en Inglés | MEDLINE | ID: mdl-11379823

RESUMEN

Variant Alzheimer disease (varAD) is clinically characterized by the combination of presenile dementia with spastic paraparesis and is caused by certain mutations of the presenilin 1 (PS-1) gene. We now present the unusual neuropathological phenotype of varAD as seen in 5 affected members of the original Finnish family with a genomic deletion encompassing exon 9 of the PS-1 gene. Their primary and association cortices and hippocampus showed a profusion of eosinophilic, roundish structures with distinct borders termed "cotton wool" plaques (CWPs). The CWPs were immunoreactive for Abeta42/43 but weakly or not at all for Abeta40 isoforms of the amyloid beta peptide (Abeta). They were devoid of a congophilic core, and fibrillar amyloid could not be identified within them by electron microscopy. Confocal microscopy showed reduced density of axons within individual CWPs and only few CWP-related PHF-tau-positive dystrophic neurites. CWPs were particularly numerous in the medial motor cortex representing the lower extremities, and degeneration of the lateral corticospinal tracts was observed at the level of the medulla oblongata and the spinal cord. In addition to the predominant CWPs, variable numbers of diffuse and cored plaques were found in the cerebral cortex. Diffuse and non-neuritic cored amyloid plaques but no CWPs occurred in the cerebellum. In conclusion, varAD in this Finnish family is distinct from classic AD because of the degeneration of lateral corticospinal tracts, predominance of CWPs devoid of fibrillar amyloid cores in the cerebral cortex, and presence of non-neuritic amyloid plaques in the cerebellum.


Asunto(s)
Enfermedad de Alzheimer/complicaciones , Enfermedad de Alzheimer/genética , Encéfalo/patología , Variación Genética , Paraparesia Espástica/complicaciones , Enfermedad de Alzheimer/patología , Exones/genética , Femenino , Eliminación de Gen , Humanos , Inmunohistoquímica , Masculino , Proteínas de la Membrana/genética , Microscopía Confocal , Microscopía Electrónica , Persona de Mediana Edad , Paraparesia Espástica/patología , Fenotipo , Presenilina-1 , Tractos Piramidales/patología
14.
Ann Neurol ; 48(5): 806-8, 2000 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11079548

RESUMEN

We describe 3 new families affected by Alzheimer's disease with spastic paraparesis. In affected individuals, including the earliest known patient with this clinical syndrome, neuropathological examination revealed large "cotton wool" plaques similar to those we have previously described in a Finnish family. In the families in which DNA was available, presenilin-1 mutations were observed. Transfection of cells with these mutant genes caused exceptionally large increases in secreted Abeta42 levels. Furthermore, brain tissue from individuals with this syndrome had very high amyloid-beta concentrations. These findings define the molecular pathogenesis of an important subgroup of Alzheimer's disease and have implications for the pathogenesis of the disease in general.


Asunto(s)
Enfermedad de Alzheimer/genética , Enfermedad de Alzheimer/patología , Péptidos beta-Amiloides/análisis , Paraparesia Espástica/genética , Paraparesia Espástica/patología , Enfermedad de Alzheimer/complicaciones , Finlandia , Humanos , Mutación/genética , Paraparesia Espástica/complicaciones
15.
Br J Clin Pharmacol ; 49(6): 549-54, 2000 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-10848718

RESUMEN

AIMS: Hydroxychloroquine (HCQ) is used widely in the treatment of chronic inflammatory diseases such as rheumatoid arthritis. Since there is great interindividual variability in the pharmacokinetics of HCQ and chloroquine is a potent inhibitor of CYP2D6-catalysed pathways in vitro, we wished to study the interaction of HCQ with CYP2D6-mediated metabolism of other drugs in vivo. METHODS: Metoprolol and dextromethorphan (DM) were selected as probe drugs because they are well-studied and widely used test substrates of CYP2D6. In this randomized, double-blind crossover study, seven healthy volunteers with extensive metabolizer phenotype for CYP2D6 ingested either 400 mg hydroxychloroquine or placebo daily for 8 days after which single oral dose pharmacokinetics of metoprolol were investigated. Dextromethorphan metabolic ratio (DM-MR) was also determined at baseline and after the ingestion of HCQ or placebo. RESULTS: Concomitant administration of HCQ increased the bioavailability of metoprolol, as indicated by significant increases in the area under the plasma concentration-time curve (65 +/- 4.6%) and maximal plasma concentrations (72 +/- 6.9%) of metoprolol. While the DM-MR values were not significantly changed, the phenotypic classification of one individual, who was heterozygous for a mutant CYP2D6 allele, was converted to a poor metabolizer by HCQ administration. CONCLUSIONS: HCQ inhibits metoprolol metabolism most probably by inhibiting its biotransformation by CYP2D6. The inhibitory effect of HCQ on dextromethorphan metabolism was not apparent when DM-MR was used as an indicator, except in an individual with limited CYP2D6 capacity.


Asunto(s)
Antagonistas Adrenérgicos beta/farmacocinética , Antimaláricos/farmacología , Antirreumáticos/farmacología , Hidroxicloroquina/farmacología , Metoprolol/farmacocinética , Adulto , Área Bajo la Curva , Disponibilidad Biológica , Cromatografía Líquida de Alta Presión , Estudios Cruzados , Inhibidores del Citocromo P-450 CYP2D6 , Dextrometorfano/orina , Método Doble Ciego , Interacciones Farmacológicas , Semivida , Humanos , Masculino
16.
Neurology ; 54(5): 1103-9, 2000 Mar 14.
Artículo en Inglés | MEDLINE | ID: mdl-10720282

RESUMEN

OBJECTIVE: To present the clinical, neuroimaging, and electrophysiologic characteristics of a variant AD phenotype. BACKGROUND: The authors have identified a large Finnish kindred with presenile dementia and spastic paraparesis due to deletion of exon 9 of presenilin 1. Neuropathologic analysis showed unusual cortical "cotton wool" plaques, immunoreactive for the beta-amyloid peptide but lacking congophilic cores. PATIENTS AND METHODS: Twenty-two affected individuals (16 men and 6 women) were identified in four successive generations. All surviving five patients were examined and subjected to molecular genetic analysis. In addition, the neurologic records of nine deceased patients were evaluated. Electrophysiologic investigations were available in eight cases. CT or MRI of the head had been performed on 11 patients and PET was performed on three patients. RESULT: The mean age at onset (+/-SD) was 50.9 +/- 5.2 years (range 40 to 61 years). Memory impairment was present in all patients. Memory impairment appeared simultaneously with or was preceded by walking difficulty due to spasticity of the lower extremities (10/14). Impaired fine coordination of hands (9/14) and dysarthria (6/14) in some patients suggested cerebellar involvement. EEG showed intermittent generalized delta-theta activity. Head MRI showed temporal and hippocampal atrophy; PET showed bilateral temporo-parietal hypometabolism. CONCLUSION: Spastic paraparesis or brisk stretch reflexes of lower extremities or clumsiness of hands combined with dementia suggests this variant of AD.


Asunto(s)
Enfermedad de Alzheimer/complicaciones , Enfermedad de Alzheimer/genética , Paraparesia Espástica/complicaciones , Paraparesia Espástica/genética , Edad de Inicio , Enfermedad de Alzheimer/fisiopatología , Encéfalo/diagnóstico por imagen , Femenino , Ligamiento Genético/genética , Genotipo , Humanos , Masculino , Paraparesia Espástica/fisiopatología , Linaje , Radiografía , Tomografía Computarizada de Emisión
17.
Epilepsia ; 40(11): 1642-8, 1999 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-10565594

RESUMEN

PURPOSE: In patients with progressive encephalopathy, hypsarrhythmia, and optic atrophy (PEHO) syndrome, the pathophysiology underlying early progressive cerebellar and brainstem degeneration and severe epilepsy is unknown. Because insulin-like growth factor (IGF)-1 has been shown significantly to promote survival of cerebellar neurons, we wanted to see if the IGF system played a role in the pathogenesis of cerebellar atrophy. METHODS: We used a sensitive enzyme immunoassay kit for measuring cerebrospinal fluid (CSF) IGF-1 and insulin-like growth-binding protein (IGFBP)-3 in four groups of patients: PEHO syndrome patients (eight), PEHO-like patients (seven), age-matched controls (31), and patients with other types of cerebellar atrophy (11). RESULTS: Patients with PEHO syndrome and those with other progressive, degenerative cerebellar diseases had lower levels of CSF IGF-1 than the controls with other neurologic diseases. The CSF IGF-1 also allowed us to differentiate the "true" PEHO patients from the "PEHO-like" patients (those with similar clinical symptoms but without the typical neuroophthalmologic or neuroradiologic findings). The concentrations of IGFBP-3 did not significantly differ in any of the patient or control groups studied. CONCLUSIONS: CSF IGF-1 levels might be used as a marker of the degeneration of neurons in specific areas.


Asunto(s)
Encefalopatías/líquido cefalorraquídeo , Enfermedades Cerebelosas/líquido cefalorraquídeo , Factor I del Crecimiento Similar a la Insulina/líquido cefalorraquídeo , Atrofia Óptica/líquido cefalorraquídeo , Espasmos Infantiles/líquido cefalorraquídeo , Atrofia/diagnóstico , Atrofia/patología , Biomarcadores , Encefalopatías/diagnóstico , Enfermedades Cerebelosas/diagnóstico , Enfermedades Cerebelosas/patología , Cerebelo/patología , Niño , Preescolar , Diagnóstico Diferencial , Femenino , Humanos , Lactante , Masculino , Atrofia Óptica/diagnóstico , Espasmos Infantiles/diagnóstico , Síndrome
19.
Am J Hum Genet ; 65(4): 974-83, 1999 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-10486316

RESUMEN

Stickler and Marshall syndromes are dominantly inherited chondrodysplasias characterized by midfacial hypoplasia, high myopia, and sensorineural-hearing deficit. Since the characteristics of these syndromes overlap, it has been argued whether they are distinct entities or different manifestations of a single syndrome. Several mutations causing Stickler syndrome have been found in the COL2A1 gene, and one mutation causing Stickler syndrome and one causing Marshall syndrome have been detected in the COL11A1 gene. We characterize here the genomic structure of the COL11A1 gene. Screening of patients with Stickler, Stickler-like, or Marshall syndrome pointed to 23 novel mutations. Genotypic-phenotypic comparison revealed an association between the Marshall syndrome phenotype and splicing mutations of 54-bp exons in the C-terminal region of the COL11A1 gene. Null-allele mutations in the COL2A1 gene led to a typical phenotype of Stickler syndrome. Some patients, however, presented with phenotypes of both Marshall and Stickler syndromes.


Asunto(s)
Anomalías Múltiples/genética , Colágeno/genética , Exones/genética , Mutación/genética , Osteocondrodisplasias/genética , Empalme del ARN/genética , Anomalías Múltiples/fisiopatología , Adolescente , Adulto , Niño , Preescolar , Análisis Mutacional de ADN , Femenino , Genotipo , Pérdida Auditiva Sensorineural/genética , Pérdida Auditiva Sensorineural/fisiopatología , Humanos , Intrones/genética , Masculino , Datos de Secuencia Molecular , Miopía/genética , Miopía/fisiopatología , Osteocondrodisplasias/fisiopatología , Fenotipo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Eliminación de Secuencia/genética , Síndrome
20.
Ann Neurol ; 45(6): 801-5, 1999 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-10360775

RESUMEN

A 30-year-old father and his 2 sons with slight hyperkinesia and mildly dysmorphic features and their close relatives were examined clinically and with computed tomography (CT) and magnetic resonance imaging (MRI). Neurophysiological and biochemical examinations were normal; however, brain MRI of the father and sons revealed extensive cerebral white matter changes. No radiological progression could be detected at a 13-year follow-up examination of the father, and proton magnetic resonance spectroscopy (MRS) of the father at the age of 30 years was normal. MRI findings in the relatives were normal, suggesting an autosomal dominant syndrome due to a new mutation in the father.


Asunto(s)
Encefalopatías/genética , Corteza Cerebral/anomalías , Adulto , Corteza Cerebral/patología , Niño , Cromosomas Humanos Par 18/genética , Humanos , Imagen por Resonancia Magnética , Masculino , Linaje
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