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1.
Child Psychiatry Hum Dev ; 50(3): 400-410, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30311039

RESUMO

Prevalence, correlates, and outcomes of youth with comorbid mental and physical conditions (i.e., multimorbidity) were examined in this cross-sectional study. Participants were 92 youth (14.5 years [SD 2.7]; 69.6% female) and their parents. Mental disorder was assessed using structured interviews and physical health using a standardized questionnaire. Twenty-five percent of youth had multimorbidity and no child or parent demographic or health characteristics were correlated with multimorbidity. Youth with multimorbidity reported similar quality of life and better family functioning [B = - 4.80 (- 8.77, - 0.83)] compared to youth with mental disorder only (i.e., non-multimorbid). Youth with multimorbidity had lower odds of receiving inpatient services [OR = 0.20 (0.05, 0.85)] and shorter stays in hospital for their mental health [OR = 0.74 (0.57, 0.91)] over the past year. Family functioning was found to mediate the association between youth multimorbidity and length of stay [αß = 0.14 (0.01, 0.27)]. Findings reinforce the need for family-centered youth mental health care.


Assuntos
Transtornos Mentais , Serviços de Saúde Mental/estatística & dados numéricos , Múltiplas Afecções Crônicas/epidemiologia , Qualidade de Vida , Adolescente , Canadá/epidemiologia , Criança , Estudos Transversais , Feminino , Hospitalização/estatística & dados numéricos , Humanos , Masculino , Transtornos Mentais/diagnóstico , Transtornos Mentais/epidemiologia , Pais/psicologia , Prevalência , Fatores Socioeconômicos
2.
Child Care Health Dev ; 44(2): 234-239, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-28776722

RESUMO

BACKGROUND: Extremely low birth weight (ELBW; <1,000 g) infants are the most vulnerable babies and are at higher risk for experiencing overprotective (i.e., controlling and intrusive) parenting, which is hypothesized to contribute to the risk for mental disorders. Despite the increased risk for anxiety disorders and decreased risk for alcohol or substance use disorders seen in ELBW survivors, no research has examined the impact of parenting. This study investigated if overprotective parenting mediates links between ELBW birth status and psychiatric disorders in adulthood. STUDY DESIGN: Participants included ELBW survivors born in 1977-1982 and matched normal birth weight (≥2,500 g) control participants (ELBW n = 81; normal birth weight n = 87) prospectively followed in Ontario, Canada. These individuals retrospectively reported on whether either of their parents was overprotective using the Parental Bonding Instrument. Presence of a current anxiety disorder and of current alcohol or substance use disorders was assessed using the Mini International Neuropsychiatric Interview at age 29-36 years. RESULTS: Path analysis showed that overprotective parenting was a significant mediator of the association between ELBW status and risk for an anxiety disorder in adulthood and the risk for an alcohol or substance use disorder in adulthood in ELBW survivors. Overprotective parenting accounted for 53% of the association between ELBW status and the risk for an anxiety disorder in adulthood and 26% of the association between ELBW status and alcohol or substance use disorders. CONCLUSIONS: Overprotective parenting accounted for a substantial proportion of the increased risk for anxiety and alcohol or substance use disorders in adulthood in ELBW survivors. Despite their perceived vulnerabilities, it is important that the parents of ELBW survivors be supported in their attempts to facilitate their children's pursuit of independence during childhood and beyond.


Assuntos
Transtornos de Ansiedade/etiologia , Recém-Nascido de Peso Extremamente Baixo ao Nascer/psicologia , Poder Familiar , Adulto , Transtornos de Ansiedade/epidemiologia , Peso ao Nascer , Estudos de Casos e Controles , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Masculino , Ontário/epidemiologia , Escalas de Graduação Psiquiátrica , Fatores de Risco , Fatores Sexuais , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/etiologia , Sobreviventes/psicologia , Adulto Jovem
3.
Allergy ; 71(4): 532-40, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26715290

RESUMO

BACKGROUND: Adolescents with food allergy have poorer psychosocial outcomes compared with their nonallergic counterparts; however, few studies have prospectively examined the mental health of adolescents and young adults in this vulnerable population. Our objectives were to estimate the prevalence of emotional and behavioral problems in an epidemiological sample of adolescents and young adults with food allergy; determine whether food allergy is associated with adolescent and maternal reports of such problems; and examine the patterns of change in emotional and behavioral problems from adolescence to young adulthood among individuals with and without food allergy. METHODS: Data came from 1303 participants at 14 and 21 years of age in the Mater University Study of Pregnancy. Emotional and behavioral problems were measured using self- and maternal-reported symptoms of depression, anxiety, attention/deficit hyperactivity disorder (ADHD), oppositional defiant disorder, and conduct disorder. RESULTS: Maternal, but not self-reports suggested that emotional and behavioral problems were higher among adolescents with food allergy. Food allergy was associated with increased odds of elevated levels of maternal-reported symptoms of depression [OR = 4.50 (1.83, 11.07)], anxiety [OR = 2.68 (1.12, 6.44)], and ADHD [OR = 3.14 (1.07, 9.19)] in adolescence. Food allergy was also associated with depressive symptoms that persisted from adolescence to young adulthood [OR = 2.05 (1.04, 4.03)]. CONCLUSIONS: Emotional and behavioral problems, particularly symptoms of depression, anxiety, and ADHD, are common among adolescents with food allergy in the general population and, in the case of elevated levels of depressive symptoms, persist into young adulthood. Healthcare professionals should seek adolescent and parental perspectives when assessing emotional and behavioral problems and monitor mental health during the transition to adulthood.


Assuntos
Emoções , Hipersensibilidade Alimentar/epidemiologia , Hipersensibilidade Alimentar/psicologia , Comportamento Problema , Adolescente , Adulto , Ansiedade , Depressão , Família , Feminino , Humanos , Masculino , Prevalência , Fatores de Risco , Estresse Psicológico , Adulto Jovem
4.
Epidemiol Psychiatr Sci ; 25(5): 462-474, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26347304

RESUMO

BACKGROUND: Despite the considerable physical, emotional and social change that occurs during emerging adulthood, there is little research that examines the association between having a chronic health condition and mental disorder during this developmental period. The aims of this study were to examine the sex-specific prevalence of lifetime mental disorder in an epidemiological sample of emerging adults aged 15-30 years with and without chronic health conditions; quantify the association between chronic health conditions and mental disorder, adjusting for sociodemographic and health factors; and, examine potential moderating and mediating effects of sex, level of disability and pain. METHOD: Data come from the Canadian Community Health Survey-Mental Health. Respondents were 15-30 years of age (n = 5947) and self-reported whether they had a chronic health condition. Chronic health conditions were classified as: respiratory, musculoskeletal/connective tissue, cardiovascular, neurological and endocrine/digestive. The World Health Organization Composite International Diagnostic Interview 3.0 was used to assess the presence of mental disorder (major depressive disorder, suicidal behaviour, bipolar disorder and generalised anxiety disorder). RESULTS: Lifetime prevalence of mental disorder was significantly higher for individuals with chronic health conditions compared with healthy controls. Substantial heterogeneity in the prevalence of mental disorder was found in males, but not in females. Logistic regression models adjusting for several sociodemographic and health factors showed that the individuals with chronic health conditions were at elevated risk for mental disorder. There was no evidence that the level of disability or pain moderated the associations between chronic health conditions and mental disorder. Sex was found to moderate the association between musculoskeletal/connective tissue conditions and bipolar disorder (ß = 1.71, p = 0.002). Exploratory analyses suggest that the levels of disability and pain mediate the association between chronic health conditions and mental disorder. CONCLUSIONS: Physical and mental comorbidity is prevalent among emerging adults and this relationship is not augmented, but may be mediated, by the level of disability or pain. Findings point to the integration and coordination of public sectors - health, education and social services - to facilitate the prevention and reduction of mental disorder among emerging adults with chronic health conditions.

5.
Pharmacogenomics J ; 14(1): 63-9, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23529008

RESUMO

Synapsins are neuronal phosphoproteins crucial to regulating the processes required for normal neurotransmitter release. Synapsin II, in particular, has been implied as a candidate gene for schizophrenia. This study investigated synapsin II mRNA expression, using real-time reverse transcriptase-PCR, in coded dorsolateral prefrontal cortical samples provided by the Stanley Foundation Neuropathology Consortium. Synapsin IIa was decreased in patients with schizophrenia when compared with both healthy subjects and patients with bipolar disorder, whereas synapsin IIb was only significantly reduced in patients with schizophrenia when compared with healthy subjects but not in patients with bipolar disorder. Furthermore, lifetime antipsychotic drug use was positively associated with synapsin IIa expression in patients with schizophrenia. Results suggest that impairment of synaptic transmission by synapsin II reduction may contribute to dysregulated convergent molecular mechanisms, which result in aberrant neural circuits that characterize schizophrenia, while implicating involvement of synapsin II in therapeutic mechanisms of currently prescribed antipsychotic drugs.


Assuntos
Antipsicóticos/uso terapêutico , Transtorno Bipolar/tratamento farmacológico , Expressão Gênica/efeitos dos fármacos , Córtex Pré-Frontal/efeitos dos fármacos , Esquizofrenia/tratamento farmacológico , Sinapsinas/genética , Antipsicóticos/administração & dosagem , Transtorno Bipolar/genética , Transtorno Bipolar/patologia , Transtorno Bipolar/fisiopatologia , Estudos de Casos e Controles , Relação Dose-Resposta a Droga , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Córtex Pré-Frontal/metabolismo , Reação em Cadeia da Polimerase em Tempo Real , Esquizofrenia/genética , Esquizofrenia/patologia , Esquizofrenia/fisiopatologia , Transmissão Sináptica/efeitos dos fármacos , Transmissão Sináptica/genética , Fatores de Tempo
6.
Prostate Cancer Prostatic Dis ; 11(1): 102-5, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-17667966

RESUMO

Chyluria has not been previously reported as being associated with carcinoma of the prostate. The most common cause is lymphatic filariasis, a parasitic disease. Non-parasitic chyluria is rare. We describe a case of chyluria associated with carcinoma of the prostate. We describe our successful management in this case and highlight how urologists may overcome problematic chyluria in patients with advanced carcinoma of the prostate.


Assuntos
Adenocarcinoma/urina , Antagonistas de Androgênios/uso terapêutico , Quilo , Neoplasias da Próstata/urina , Adenocarcinoma/diagnóstico por imagem , Adenocarcinoma/patologia , Idoso , Humanos , Masculino , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/patologia , Tomografia Computadorizada por Raios X , Urina
7.
Cerebrovasc Dis ; 13(4): 272-8, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12011553

RESUMO

The purpose of this study was to analyze the long-term mortality, functional recovery and long-term complications of cerebral vein and dural sinus thrombosis (CVDST) admitted to Portuguese hospitals. A follow-up of symptomatic CVDST admitted to Portuguese hospitals since 1980 was performed. Fifty-one patients (retrospective cases) were re-evaluated during 1996; 91 consecutively admitted patients from 6/1995 to 6/1998 were followed up to 1999. In 1996, 4 (8%) of the retrospective cases had died (3 patients died in the acute phase), 4 (8%) could not be reached, 33 (64%) had recovered completely (Rankin 0 or 1) and 3 (6%) were dependent. The prospective cases had a mean follow-up of 1 year: 6 (7%) patients died in the acute phase, one (1%) died during follow-up, 75 (82%) recovered completely, and only 1 (1%) was dependent. For the prospective cases, worsening after admission (OR = 18.2; 95% CI = 2.9-112.4) and encephalopathy as the presenting syndrome (OR = 7.1; 95% CI = 1.2-40.9) predicted death or dependency, while absence of aphasia (OR 6.7, 95% CI = 1.6-33) and no worsening after admission (OR = 5.9; 95% CI = 1.6-20) predicted total recovery. During follow-up of the prospective cases, 4 (5%) patients had thrombotic events, 8 (10%) patients experienced seizures, 9 (11%) complained of severe headaches and 1 patient suffered severe visual loss. The long-term functional prognosis of patients with CVDST was fairly good with complete recovery in the majority of cases. However, these patients had a moderate risk of further thrombotic events and seizures.


Assuntos
Veias Cerebrais/patologia , Dura-Máter/irrigação sanguínea , Dura-Máter/patologia , Trombose Intracraniana/complicações , Trombose Intracraniana/diagnóstico , Trombose dos Seios Intracranianos/complicações , Trombose dos Seios Intracranianos/diagnóstico , Adulto , Veias Cerebrais/diagnóstico por imagem , Dura-Máter/diagnóstico por imagem , Feminino , Seguimentos , Humanos , Trombose Intracraniana/mortalidade , Modelos Logísticos , Angiografia por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Portugal , Valor Preditivo dos Testes , Prognóstico , Estudos Prospectivos , Radiografia , Estudos Retrospectivos , Trombose dos Seios Intracranianos/mortalidade , Análise de Sobrevida , Tempo
8.
Cad Saude Publica ; 15(2): 387-95, 1999.
Artigo em Português | MEDLINE | ID: mdl-10409791

RESUMO

The study aims to identify the frequency with which certificates of live birth are filled out and to analyze the data they provide. To gather the data, the authors used a model birth certificate filled out by research assistants based on information obtained from the reports on mothers and newborns. This information was then compared to data contained in the official birth certificates available in the Information Technology Division of the Municipal Health Department. The sample consisted of 911 certificates of live birth from July 1996 in the ten maternity wards of the city of Ribeirão Preto. Data analysis showed that frequency of completion of birth certificates differs by hospital, involving both physicians and administrative personnel. The authors identified a high level of agreement in the data, i.e., over 90% in 13 of 18 variables compared in the birth certificates and in half of the hospitals investigated. The disagreement occurred especially with respect to data on the number of children per mother, number of prenatal visits, mother's schooling, and father's name.


Assuntos
Declaração de Nascimento , Sistemas de Informação/estatística & dados numéricos , Brasil , Feminino , Humanos , Sistemas de Informação/normas , Masculino
9.
Acta Med Port ; 10(8-9): 603-6, 1997.
Artigo em Português | MEDLINE | ID: mdl-9446481

RESUMO

The use of thrombolytic therapy in acute ischemic stroke is still today a somewhat controversial subject. We come across authors who defend its undisputed use in adequately selected cases, others who are more sceptical and habitually place a question mark on this subject and a third group in expectation. Intra-arterial thrombolysis has very precise indications, its use in vertebrobasilar ischemic stroke remains inconclusive, eventually with a wider window. Five important randomised studies have taken place in recent years with thrombolysis administered intravenously. All three studies with Estreptoquinase--MAST-E, MAST-I and ASK--ended prematurely due to the high rates of mortality and intracranial haemorrhage observed in the group of patients treated with this drug. From the two main studies with rt-PA-ECASS and NINDS, the American trial showed somewhat higher results. The Guidelines from the American Heart Association for the use of rt-PA in ischemic stroke are presented. Fibrinolysis, when successful, only permits the restoration of blood flow in the area of ischemic suffering. This implies that, simultaneously, other therapeutic measures will have to be implemented.


Assuntos
Transtornos Cerebrovasculares/tratamento farmacológico , Fibrinolíticos/uso terapêutico , Terapia Trombolítica , Doença Aguda , Humanos , Terapia Trombolítica/métodos , Fatores de Tempo
10.
Anticancer Res ; 14(4A): 1503-7, 1994.
Artigo em Inglês | MEDLINE | ID: mdl-7526771

RESUMO

PSA and PSAP were examined in 198 prostatic biopsies and correlated with PSA and PSAP serum levels evaluated before biopsies. In every type of lesion there was no relation between PSA or PSAP serum levels and their expression in biopsy specimens. PSA and PSAP staining was similar in both cancer and benign hyperplasia and lower in dysplasia, atrophy and prostatitis; while serum levels were higher in adenocarcinomas than in other lesions. A significant difference of PSAP serum levels was noted in different Gleason's grading of neoplasia, found neither with PSA serum levels/nor with PSA and PSAP tissue staining.


Assuntos
Fosfatase Ácida/análise , Adenocarcinoma/patologia , Antígeno Prostático Específico/análise , Próstata/patologia , Hiperplasia Prostática/patologia , Neoplasias da Próstata/sangue , Neoplasias da Próstata/patologia , Fosfatase Ácida/sangue , Adenocarcinoma/sangue , Atrofia , Biópsia por Agulha , Humanos , Imuno-Histoquímica , Masculino , Antígeno Prostático Específico/sangue , Hiperplasia Prostática/sangue
11.
Can J Neurol Sci ; 20(2): 147-50, 1993 May.
Artigo em Inglês | MEDLINE | ID: mdl-8334577

RESUMO

We studied the activity of glutamate dehydrogenase (GDH) in leukocytes from 23 patients with dominantly inherited ataxia. All the patients were assessed with a rating scale for ataxias and met the clinical criteria for the diagnosis of Machado-Joseph disease. The mean age of onset of symptoms was 37.8, SD 13.4 years and the duration of the disease was 7.4, SD 4.9. Leukocyte GDH activity was significantly decreased (p < 0.001) when compared to 20 normal controls. These data extend previous reports indicating that a GDH deficiency is present in peripheral tissues from some patients with spinocerebellar degenerations. Furthermore, this study suggests that a genetic deficiency of GDH may underlie some forms of dominant ataxias; this deficiency may be marked in patients with Machado-Joseph disease and is not specific for any type of multiple system atrophy.


Assuntos
Glutamato Desidrogenase/deficiência , Degenerações Espinocerebelares/enzimologia , Adolescente , Adulto , Idoso , Criança , Feminino , Glutamato Desidrogenase/genética , Humanos , Leucócitos/enzimologia , Masculino , Pessoa de Meia-Idade , Degenerações Espinocerebelares/genética
12.
Eur Urol ; 23(2): 299-301, 1993.
Artigo em Inglês | MEDLINE | ID: mdl-7683990

RESUMO

10 patients underwent transurethral thermotherapy and after few days were submitted to open prostatectomy. The surgical specimens were compared to those of 2 other patients used as controls. Pathological specimens were evaluated using histological and immunohistochemical stains. Microscopic examination showed a well-preserved urethra and microabscesses, epithelial necrosis and vasculitis in the prostatic tissue at a depth of 0.5-2 cm from the urethral lumen. Immunohistochemical stains showed the damage and disappearance of nervous fibers.


Assuntos
Hipertermia Induzida , Hiperplasia Prostática/terapia , Receptores Adrenérgicos beta/metabolismo , Idoso , Idoso de 80 Anos ou mais , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Prostatectomia , Hiperplasia Prostática/metabolismo , Sistema Nervoso Simpático/metabolismo , Uretra/inervação , Uretra/patologia
13.
Cancer ; 70(1 Suppl): 225-9, 1992 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-1376192

RESUMO

Prostatic specific antigen (PSA) is a tissue specific marker that is now the most widely used biochemical test for the assessment and follow-up of prostate cancer. The levels of PSA rise with tumor stage, but there is considerable overlap of their distribution between stages. PSA measurement now forms a part of the workup of a suspected carcinoma of the prostate, with a level of more than 4 ng/ml being an indication for further investigation. The sensitivity of PSA makes it an essential test for the postoperative assessment of radical prostatectomy and curative radiation therapy. The rates of change of PSA levels in locally advanced and metastatic disease treated by hormone manipulation can provide prognostic information. Low levels of PSA (less than 10 ng/ml) 6 months after treatment are a sign that the response will be prolonged. However, the sensitivity of PSA often results in a rising level preceding clinical evidence of progression by several months and is not necessarily an indication to change treatment. Alkaline phosphatase and prostatic acid phosphatase provide a less sensitive test for the bone response to skeletal metastases and tumor activity in advanced disease, respectively.


Assuntos
Antígenos de Neoplasias/metabolismo , Biomarcadores Tumorais/sangue , Neoplasias da Próstata/diagnóstico , Fosfatase Ácida/sangue , Fosfatase Alcalina/sangue , Ensaios Enzimáticos Clínicos , Humanos , Masculino , Prognóstico , Próstata/enzimologia , Próstata/imunologia , Antígeno Prostático Específico , Prostatectomia , Neoplasias da Próstata/imunologia , Neoplasias da Próstata/terapia , Sensibilidade e Especificidade
14.
Urol Clin North Am ; 18(1): 139-43, 1991 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-1992567

RESUMO

The patient presenting with severe bone pain after primary hormonal therapy, with vertebral collapse, or with uremia resulting from ureteric obstruction should be considered for intravenous stilbestrol diphosphate therapy. The urologist can expect early marked improvement in the patients' mobility and pain, with a reduction in analgesic requirements, from a single 7-day course of treatment. In addition, the drug is inexpensive and free of the side effects commonly associated with cytotoxic therapy. Accurate monitoring of the response is possible with serum prostate-specific antigen measurements, which also enable further therapy to be planned efficiently.


Assuntos
Dietilestilbestrol/análogos & derivados , Neoplasias da Próstata/tratamento farmacológico , Dietilestilbestrol/administração & dosagem , Dietilestilbestrol/efeitos adversos , Dietilestilbestrol/farmacologia , Dietilestilbestrol/uso terapêutico , Humanos , Masculino , Dor
15.
Urology ; 35(6): 483-6, 1990 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-1693796

RESUMO

The serum prostate-specific antigen (PSA) of 58 men with benign prostatic hypertrophy (BPH) and 17 men with carcinoma of the prostate (CaP) was correlated with the weight of prostatic tissue resected at transurethral prostatectomy (TURP). A significant correlation was identified between the weight of resected BPH tissue and the serum PSA (p less than or equal to 0.001; r = 0.54). No such correlation was seen in the CaP patients. By arbitrarily dividing the serum PSA by the prostate weight, it was possible to devise an index. This index corrected PSA in relation to prostatic size and unlike PSA in isolation did not differ significantly between normal controls and those with BPH. The index in CaP was significantly greater than that of either controls or BPH (p less than or equal to 0.001). Furthermore the index of metastatic CaP (M1) was significantly higher than that of nonmetastatic disease (MO) (p = 0.05). The higher index found in CaP would seem to be related to the bulk metastatic tumor, either manifest or occult. Comparing the index of CaPs to that found in normal and benign disease (a constant) offers a possible means of estimating the extent of local and metastatic tumor mass.


Assuntos
Antígenos de Neoplasias/sangue , Biomarcadores Tumorais/sangue , Neoplasias Ósseas/secundário , Neoplasias da Próstata/imunologia , Neoplasias Ósseas/imunologia , Humanos , Masculino , Tamanho do Órgão , Valor Preditivo dos Testes , Antígeno Prostático Específico , Hiperplasia Prostática/imunologia
17.
Urology ; 34(3): 134-8, 1989 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-2476882

RESUMO

High-dose intravenous estrogen therapy was shown to be effective in relieving bone pain due to metastatic disease in 22 of 29 (75.9%) men with advanced hormone-resistant prostate cancer. This clinical response was accompanied by significant falls in serum prostate-specific antigen (PSA) levels in 13 (44.8%) patients. It is suggested that this clinical benefit is due to a direct inhibitory effect of estrogen on prostate cancer cells.


Assuntos
Antígenos de Neoplasias/análise , Biomarcadores Tumorais/sangue , Neoplasias Ósseas/secundário , Dietilestilbestrol/administração & dosagem , Neoplasias da Próstata/tratamento farmacológico , Neoplasias Ósseas/fisiopatologia , Dietilestilbestrol/uso terapêutico , Humanos , Injeções Intravenosas , Masculino , Dor/tratamento farmacológico , Dor/etiologia , Antígeno Prostático Específico , Neoplasias da Próstata/fisiopatologia
18.
Br J Urol ; 64(1): 25-9, 1989 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-2527579

RESUMO

Tumour cells from 23 renal carcinomas were exposed in vitro to increasing concentrations of medroxyprogesterone acetate (MPA) or one of several cytotoxic agents. Thereafter the uptake of 75Selenomethionine (75SeM) was compared to that of tumour cells not exposed to the drug. Using drug concentrations similar to those seen following in vivo administration in patients, MPA produced greater than or equal to 50% inhibition of 75SeM uptake in 5 of 23 cases. The comparable proportion for doxorubicin was 4 of 5 and for mitozantrone 7 of 12. Methotrexate and Vinblastine were much less effective. In all cases where greater than or equal to 50% inhibition was obtained with doxorubicin and mitozantrone the carcinoma had spread beyond the kidney. Thus drug sensitivity may be associated with a high mitotic rate.


Assuntos
Antineoplásicos/farmacologia , Neoplasias Renais/metabolismo , Medroxiprogesterona/análogos & derivados , Células Tumorais Cultivadas/efeitos dos fármacos , Idoso , Relação Dose-Resposta a Droga , Doxorrubicina/farmacologia , Feminino , Humanos , Masculino , Medroxiprogesterona/farmacologia , Acetato de Medroxiprogesterona , Metotrexato/farmacologia , Pessoa de Meia-Idade , Proteínas de Neoplasias/biossíntese , Selenometionina/metabolismo , Vimblastina/farmacologia
19.
Hum Genet ; 82(1): 20-6, 1989 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-2523851

RESUMO

Several studies have attempted to define the role of parental age in determining the prevalence of 47, +21 according to the origin of nondisjunction. This report analyzes the original data of 197 informative families from Italy and reviews the available literature (96 families from Denmark and 201 from other countries). Mothers whose gametes showed nondisjunction are treated as cases, and those with normal meiosis as controls within each study. To utilize the data fully, maternal age at birth of a 47, +21 individual is treated as a continuous variable in a nonparametric comparison. The combined evidence indicates that nondisjunction in the female is associated with a significant age difference between cases and controls which is mostly due to errors in the second meiotic division. It may be inferred that in the general population, aging enhances nondisjunction at both first and second division in the female, while aging in the male is presumably associated mostly (or only) with first division errors. Implications and alternative models are discussed.


Assuntos
Síndrome de Down/etiologia , Não Disjunção Genética , Pais , Aborto Espontâneo/etiologia , Feminino , Humanos , Itália , Meiose , Gravidez , Raios X
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