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1.
Z Gerontol Geriatr ; 48(1): 49-51, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24271146

RESUMO

Bilateral leg edema is a frequent symptom in older people and an important concern in geriatric medicine. Further evaluation is frequently not performed and simple therapy with diuretics is prescribed. Particularly in older patients, long-term use of diuretics can lead to severe electrolyte imbalances, volume depletion, and falls. In this case report we want to focus the physicians' attention on the necessity to determine the cause and show a correspondingly effective treatment for bilateral leg edema in older people. A thorough approach is required to recognize diseases and to avoid adverse drug events as geriatric patients often show an atypical presentation or minor symptoms. The cause of swollen legs is often multifactorial; therefore, the patient's individual history and an appropriate physical examination are important. Depending on the clinical symptoms, evaluation including basic laboratory tests, urinalysis, chest radiography, and echocardiogram may be indicated. The most probable cause of bilateral edema in older patients is chronic venous insufficiency. Heart failure is also a common cause. Other systemic causes such as renal disease or liver disease are much rarer. Antihypertensive and anti-inflammatory drugs can frequently cause leg edema, but the incidence of drug-induced leg swelling is unknown. With the help of this special case we tried to develop an approach to the diagnosis of symmetric leg edema in older patients, a problem frequently neglected in geriatric medicine.


Assuntos
Edema/diagnóstico , Edema/etiologia , Cardiopatias/complicações , Ibuprofeno/efeitos adversos , Insuficiência Venosa/complicações , Idoso de 80 Anos ou mais , Doença Crônica , Diagnóstico Diferencial , Edema/terapia , Feminino , Humanos
2.
Osteoporos Int ; 25(9): 2297-306, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24935164

RESUMO

UNLABELLED: Only few studies have been published hitherto on country-specific incidence of distal forearm fracture. In the prevailing study, incidences were estimated, and trend analyses were performed for the entire Austrian population aged ≥50á. Incidence decreased significantly in women, but not in men, over the past 12 years of observation. INTRODUCTION: To estimate incidence of distal forearm fracture and assess incidence trends in the entire Austrian population aged ≥50á from 1989-2010 for inpatient fractures and from 1999 to 2010 for all fractures. METHODS: The number of inpatient forearm fractures was obtained from the Austrian Hospital Discharge Register (AHDR) for the entire population aged ≥50á from 1989 to 2010. Total number of distal forearm fractures was modeled using patient-level data on 36,327 patients with distal forearm fractures. Crude and age-standardized incidence rates (cases per 100,000) were estimated in 5-year age intervals. To analyze the change in incidence over time, average annual changes expressed as incidence rate ratios (IRR) were calculated. RESULTS: For all distal forearm fractures, age-standardized incidence in women in 1999 and 2009 were estimated at 709 (95 % CI 675-743) and 607 (578-637), respectively. The age-standardized incidences in men the same years were estimated at 171 (156-185) and 162 (151-174), respectively. IRR analyses showed a significant decrease in women (-1.1 %, p < 0.01) but not in men (-0.8 %, p > 0.05) over the last 12 years (1999-2010). CONCLUSION: Incidence of distal forearm fracture in the entire Austrian population is comparable to hip fracture incidence which is known to be among the highest worldwide. However, trend analyses reveal a significant decrease for all distal forearm fractures in women, but not in men, over the last 12 years.


Assuntos
Traumatismos do Antebraço/epidemiologia , Fraturas por Osteoporose/epidemiologia , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Áustria/epidemiologia , Feminino , Hospitalização/estatística & dados numéricos , Hospitalização/tendências , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Alta do Paciente/estatística & dados numéricos , Alta do Paciente/tendências , Sistema de Registros , Distribuição por Sexo
3.
Osteoarthritis Cartilage ; 21(11): 1707-15, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23835117

RESUMO

INTRODUCTION: Long-term exposure to increased lead (Pb) concentrations is associated with several chronic diseases. The divalent cation zinc (Zn) is essential for numerous enzymes. In a recent study we found remarkably elevated concentrations of Pb and Zn in the tidemark (TM), which is the mineralization front of human articular cartilage. OBJECTIVE: Duplication or multiplication of TMs occurs with advancing age or degeneration. We hypothesized that trace elements accumulate in TMs as a function of time. Thus, in cases of double TMs, the deep (older) TM should contain higher Pb and Zn concentrations than the superficial (younger) TM. DESIGN: Undecalcified tissue from articular cartilage and subchondral bone of femoral heads and patellae was examined by synchrotron radiation induced confocal micro X-ray fluorescence analysis and by quantitative backscattered electron imaging to determine the local distribution of Ca, Zn, and Pb in this tissue. RESULTS: The evaluation of X-ray fluorescence intensities in double TMs revealed in average a 2.6-fold higher Pb level in the deep TM compared to the superficial TM while Zn concentrations were similar. Pb and Zn contents were significantly enhanced in the deep TM (Pb: 35-fold, Zn: five-fold) and in the superficial TM (Pb: 12-fold, Zn: five-fold) compared to the bone level. CONCLUSION: For the first time a differential accumulation of Pb and Zn is documented in regions with double TMs revealing various timescales for the accumulation of these elements. Increased amounts of Pb are present in the TMs (up to the 62-fold of the bone level) featuring a potential source of internal Pb release if the TM region is destroyed.


Assuntos
Cartilagem Articular/metabolismo , Chumbo/metabolismo , Zinco/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Cabeça do Fêmur/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Osteoartrite do Quadril/metabolismo , Patela/metabolismo , Espectrometria por Raios X/métodos
4.
Osteoporos Int ; 24(9): 2413-21, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23568459

RESUMO

UNLABELLED: Incidence rates of proximal humeral fractures in Austria over a period of twenty years (1989-2008) were estimated. Age standardized incidence rates increased until 2008, primarily driven by an increase in incidence rates in women. INTRODUCTION: The aim of the prevailing study was to estimate incidence rates of proximal humeral fractures and to assess changes in trend in the Austrian population aged 50 years and above, over a period of 20 years (1989-2008). METHODS: Number of proximal humeral fractures were obtained from the Austrian Hospital Discharge Register for the entire population >50 years of age. Adjustment factors were determined for multiple registrations of the same diagnosis, and for the fact that not all patients with proximal humeral fractures are treated in an inpatient setting. To analyze the overall change in this type of fracture for the period, average annual changes expressed as incidence rate ratios were calculated. RESULTS: The estimated age-standardized incidence (fractures per 100,000 individuals) of proximal humeral fractures among Austrians >50 years of age increased in men from 112 (95% CI, 99-124) to 141 (129-153) and in women from 222 (202-241) to 383 (360-406). The increase appeared to be linear with no leveling off towards the end of the study period. CONCLUSION: While some caution is necessary when interpreting the results given the use of adjustment factors, there appears to have been a rise in the incidence of proximal humeral fractures in Austria in both men and women, with no leveling off in recent years. The reasons for this are not clear, but in the light of previously reported leveling off in the increase in the incidence of hip fractures, a change in the patterns of falls cannot be ruled out.


Assuntos
Fraturas do Ombro/epidemiologia , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Áustria/epidemiologia , Feminino , Hospitalização , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Fraturas por Osteoporose/epidemiologia , Alta do Paciente/estatística & dados numéricos , Alta do Paciente/tendências , Fatores de Risco , Distribuição por Sexo
5.
NMR Biomed ; 25(1): 113-122, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21618306

RESUMO

Longitudinal studies of lactate MRSI and dynamic contrast-enhanced MRI were performed at 4.7 T in two prostate tumor models grown in rats, Dunning R3327-AT (AT) and Dunning R3327-H (H), to determine the potential of lactate and the perfusion/permeability parameter Ak(ep) as markers of tumor aggressiveness. Subcutaneous AT (n = 12) and H (n = 6) tumors were studied at different volumes between 100 and 2900 mm(3) (Groups 1-5). Lactate concentration was determined using selective multiple quantum coherence MRSI with the phantom substitution method. Tumor enhancement after the administration of gadolinium diethylenetriaminepenta-acetic acid was analyzed using the Brix-Hoffmann model and the Ak(ep) parameter was used as a measure of tumor perfusion/permeability. Lactate was not detected in the smallest AT tumors (Group 1; 100-270 mm(3) ). In larger AT tumors, the lactate concentration increased from 2.8 ± 1.0 mm (Group 2; 290-700 mm(3)) to 8.4 ± 2.9 mm (Group 3; 1000-1340 mm(3)) and 8.2 ± 2.2 mm (Group 4; 1380-1750 mm(3) ), and then decreased to 5.0 ± 1.7 mm (Group 5; 1900-2500 mm(3)), and was consistently higher in the tumor core than in the rim. Lactate was not detected in any of the H tumors. The mean tumor Ak(ep) values decreased with increasing volume in both tumor types, but were significantly higher in H tumors. In AT tumors, the Ak(ep) values were significantly higher in the rim than in the core. Histological hypoxic and necrotic fractions in AT tumors increased with volume from 0% in Group 1 to about 20% and 30%, respectively, in Group 5. Minimal amounts of hypoxia and necrosis were found in H tumors of all sizes. Thus, the presence of lactate and heterogeneous perfusion/permeability are signatures of aggressive, metabolically deprived tumors.


Assuntos
Biomarcadores Tumorais/metabolismo , Meios de Contraste , Ácido Láctico/metabolismo , Imageamento por Ressonância Magnética/métodos , Espectroscopia de Ressonância Magnética/métodos , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/patologia , Animais , Hipóxia Celular , Imuno-Histoquímica , Masculino , Necrose , Invasividade Neoplásica , Neoplasias da Próstata/metabolismo , Ratos , Carga Tumoral
6.
J Exp Med ; 144(5): 1324-35, 1976 Nov 02.
Artigo em Inglês | MEDLINE | ID: mdl-1032893

RESUMO

When a male mouse is presented with two H-2 congenic two female in estrus, his choice of a mate is influenced by their H-2 types. The term "strain preference" is used to describe the general tendency of the male population of one inbred strain to prefer two female of one H-2 type rather than another. The term "consistency of choice" is used to describe the added tendency of particular two males of one inbred strain, in sequential mating trials, to prefer two females of the H-2 type they chose in previous trials. Statistical analysis showed trends in the data that support the following conclusions: (a) The choice is made by the male, not the female. (b) The strain preference of two males may favor two females of dissimilar H-2 type (four of six comparisons), or of similar H-2 type (one of six comparisons). (c) Consistency of choice does not always correspond with strain preference. In one of six comparisons of H-2 genotypes there was no strain preference but pronounced consistency of choice by individual two male. This suggests memory, but fortuitous bias is not excluded. (d) Strain preference of the same male population may favor two male of the same or a different H-2 type, depending on which different H-2 type is offered as the choice alternative to self. These findings conform to a provisional model in which olfactory mating preference is governed by two linked genes in the region of H-2, one for the female signal and one for the male receptor. These mating preferences could in natural populations serve the purpose of increasing the representation of particular H-2 haplotypes or of maintaining heterozygosity of genes in the region of H-2.


Assuntos
Genes , Antígenos de Histocompatibilidade , Comportamento Sexual Animal/fisiologia , Animais , Feminino , Ligação Genética , Heterozigoto , Homozigoto , Masculino , Camundongos , Camundongos Endogâmicos AKR , Feromônios
7.
Eur Geriatr Med ; 10(2): 275-283, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34652762

RESUMO

Falls are a major public health concern in the older population, and certain medication classes are a significant risk factor for falls. However, knowledge is lacking among both physicians and older people, including caregivers, concerning the role of medication as a risk factor. In the present statement, the European Geriatric Medicine Society (EuGMS) Task and Finish group on fall-risk-increasing drugs (FRIDs), in collaboration with the EuGMS Special Interest group on Pharmacology and the European Union of Medical Specialists (UEMS) Geriatric Medicine Section, outlines its position regarding knowledge dissemination on medication-related falls in older people across Europe. The EuGMS Task and Finish group is developing educational materials to facilitate knowledge dissemination for healthcare professionals and older people. In addition, steps in primary prevention through judicious prescribing, deprescribing of FRIDs (withdrawal and dose reduction), and gaps in current research are outlined in this position paper.

8.
Drugs Aging ; 36(4): 299-307, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30741371

RESUMO

Falls are a major public health concern in the older population, and certain medication classes are a significant risk factor for falls. However, knowledge is lacking among both physicians and older people, including caregivers, concerning the role of medication as a risk factor. In the present statement, the European Geriatric Medicine Society (EuGMS) Task and Finish group on fall-risk-increasing drugs (FRIDs), in collaboration with the EuGMS Special Interest group on Pharmacology and the European Union of Medical Specialists (UEMS) Geriatric Medicine Section, outlines its position regarding knowledge dissemination on medication-related falls in older people across Europe. The EuGMS Task and Finish group is developing educational materials to facilitate knowledge dissemination for healthcare professionals and older people. In addition, steps in primary prevention through judicious prescribing, deprescribing of FRIDs (withdrawal and dose reduction), and gaps in current research are outlined in this position paper.


Assuntos
Acidentes por Quedas/prevenção & controle , Analgésicos Opioides/efeitos adversos , Anticonvulsivantes/efeitos adversos , Geriatria/métodos , Psicotrópicos/efeitos adversos , Inibidores de Simportadores de Cloreto de Sódio e Potássio/efeitos adversos , Acidentes por Quedas/estatística & dados numéricos , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Europa (Continente) , União Europeia , Geriatria/normas , Humanos , Polimedicação , Fatores de Risco
9.
Psychoneuroendocrinology ; 93: 56-64, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29702443

RESUMO

Social exclusion is a complex phenomenon, with wide-ranging immediate and delayed effects on well-being, hormone levels, brain activation and motivational behavior. Building upon previous work, the current fMRI study investigated affective, endocrine and neural responses to social exclusion in a more naturalistic Cyberball task in 40 males and 40 females. As expected, social exclusion elicited well-documented affective and neural responses, i.e., increased anger and distress, as well as increased exclusion-related activation of the anterior insula, the posterior-medial frontal cortex and the orbitofrontal cortex. Cortisol and testosterone decreased over the course of the experiment, whereas progesterone showed no changes. Hormone levels were not correlated with subjective affect, but they were related to exclusion-induced neural responses. Exclusion-related activation in frontal areas was associated with decreases in cortisol and increases in testosterone until recovery. Given that results were largely independent of sex, the current findings have important implications regarding between-sex vs. within-sex variations and the conceptualization of state vs. trait neuroendocrine functions in social neuroscience.


Assuntos
Distância Psicológica , Estresse Psicológico/metabolismo , Estresse Psicológico/fisiopatologia , Adulto , Afeto/fisiologia , Ira/fisiologia , Feminino , Humanos , Hidrocortisona/análise , Imageamento por Ressonância Magnética/métodos , Masculino , Sistemas Neurossecretores/fisiologia , Progesterona/análise , Saliva/química , Fatores Sexuais , Testosterona/análise , Adulto Jovem
10.
J Natl Cancer Inst ; 87(19): 1456-62, 1995 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-7545759

RESUMO

BACKGROUND: Geographic variation in the incidence of clinically detected prostate cancer is considerable, with a 120-fold greater incidence in the United States than in China. The incidence of latent prostate cancer, however, shows little variation worldwide, with approximately 30% of men older than age 50 years having microfocal disease (determined by autopsy). Some epidemiologic studies have suggested that a high intake of dietary fat may constitute a risk factor for the development of advanced prostate cancer. PURPOSE: We studied the influence of dietary fat content on the growth of tumors established in athymic nude mice with androgen-sensitive, human prostatic adenocarcinoma cells (LNCaP cells). We also investigated whether manipulation of dietary fat content altered prostate-specific antigen (PSA) production by these tumors. METHODS: Tumors were induced in nude mice by subcutaneous injection of 10(6) LNCaP cells. Both the American Type Culture Collection (ATCC) LNCaP cell line and a more androgen-responsive subline derived from it (i.e., the Harris LNCaP cell line) were used. Mice were fed a 40.5-kcal% fat diet at the time of tumor cell injection. Three weeks later, after measurable tumors were formed, the animals were assigned to receive diets with one of the following fat contents: 40.5, 30.8, 21.2, 11.6, or 2.3 kcal% fat. Food intake, animal weights, and tumor volumes were recorded weekly; serum PSA and testosterone levels were measured at the termination of the study. Post hoc multiple comparisons were made using the Student-Newman-Keuls procedure. Two-sided tests of statistical significance were used to evaluate pairwise comparisons. RESULTS: Tumor growth rates, final tumor weights, and ratios of final tumor weights to animal weights were substantially greater in groups that continued to receive a 40.5-kcal% fat diet than in groups whose diets were changed to 2.3 kcal%, 11.6 kcal%, or 21.2 kcal% fat (all P values < .04). Comparison of these parameters among the 2.3-kcal%, 11.6-kcal%, and 21.2-kcal% dietary fat groups did not reveal any statistically significant differences. No statistically significant differences were noted in total ingested calories, animal weight gain, serum testosterone levels, or histopathologic characteristics of the tumors among the tested dietary groups. Serum PSA levels were highest in the 40.5-kcal% fat group and lowest in the 2.3-kcal% fat group (evaluated only for ATCC LNCaP cells; P < .05). CONCLUSIONS: Reduction of dietary fat substantially slows the growth of tumors established from human prostatic adenocarcinoma cells in a murine xenograft model. A positive association persists between tumor volumes and serum PSA levels even after extreme modification of dietary fat content.


Assuntos
Adenocarcinoma/prevenção & controle , Gorduras na Dieta/administração & dosagem , Gorduras na Dieta/efeitos adversos , Antígeno Prostático Específico/biossíntese , Neoplasias da Próstata/prevenção & controle , Adenocarcinoma/induzido quimicamente , Adenocarcinoma/imunologia , Análise de Variância , Animais , Peso Corporal , Masculino , Camundongos , Camundongos Nus , Transplante de Neoplasias , Projetos Piloto , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/induzido quimicamente , Neoplasias da Próstata/imunologia , Testosterona/sangue , Células Tumorais Cultivadas
11.
Cancer Res ; 54(18): 4885-91, 1994 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-8069854

RESUMO

The effects of radiation dose upon a hypoxic murine mammary carcinoma were followed using 31P nuclear magnetic resonance spectroscopy. Animals were studied before and over the course of 9 days after tumors were irradiated with a single dose of 0, 4, 8, or 17 Gy. The current data is compared to our previous studies of the effects of 32 or 65 Gy on the same tumor model. The energy status of the tumors, as reflected in nucleotide triphosphate:Pi and phosphocreatine:Pi ratios, improved after receiving a dose of 8 to 65 Gy and decreased after receiving 0 or 4 Gy doses. The energy status of the 8- to 65-Gy dose cohorts reached a maximum between 1 and 4 days after irradiation. Additionally, the change in the hypoxic cell fraction 48 h after a 17-Gy dose was determined; it was calculated from changes in the doses required to control 50% of the tumors post radiation for clamped (hypoxic) and unclamped (normoxic) tumors in parallel animal cohorts. A significant decrease compared to preirradiation values was observed in the hypoxic cell fraction following 17 Gy irradiation. This decrease was temporally coincident with increases in tumor energy status measured using nuclear magnetic resonance and was similar to our previously reported results of the change in hypoxic fraction 48 h after a 32-Gy dose. Changes in the relative ratio of phosphomonoesters showed a strong dose dependence after irradiation. The downfield component of the phosphomonoester peak, which consists largely of phosphoethanolamine, increased relative to the upfield component, phosphocholine. This dose-dependent ratio reached a maximum approximately 7 days post radiation. Changes in the levels of membrane phospholipid precursors may be related to alterations in cell proliferation or may be a result of radiation-induced membrane damage.


Assuntos
Metabolismo Energético/efeitos da radiação , Neoplasias Mamárias Experimentais/metabolismo , Animais , Hipóxia Celular/efeitos da radiação , Relação Dose-Resposta à Radiação , Ésteres/metabolismo , Espectroscopia de Ressonância Magnética , Neoplasias Mamárias Experimentais/patologia , Neoplasias Mamárias Experimentais/radioterapia , Camundongos , Nucleotídeos/metabolismo , Fósforo/metabolismo , Fosforilcolina/metabolismo , Doses de Radiação
12.
Cancer Res ; 44(2): 467-71, 1984 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-6692354

RESUMO

AKR mice develop spontaneous lymphoid leukemia late (8 to 12 months) in life, although persistent murine leukemia virus production occurs throughout their life. This suggests that age-related changes are involved in development of leukemia. Prostaglandin biosynthesis was therefore studied in 24-hr cultures in vitro at 37 degrees of peritoneal macrophages, splenocytes, thymocytes, bone marrow, and lymph node cells. AKR mice of 2, 6, and 8 to 12 months of age were studied. Prostaglandin E1, prostaglandin E2, prostaglandin F2 alpha, 6-ketoprostaglandin F1 alpha, and thromboxane B2 were measured. In cultures of peritoneal macrophages and cells from spleen, thymus, and lymph nodes, the biosynthesis of all five prostaglandin moieties was higher in those cultures prepared from 8- to 12-month-old spontaneously leukemic mice in comparison with those from 2-month-old nonleukemic AKR mice. However, when leukemia was transplanted in 3-month-old AKR mice, synthesis of all five compounds was reduced significantly in cultures of peritoneal macrophages and splenocytes prepared from these 3-month-old leukemic mice. The present data demonstrate abnormalities in prostaglandin synthesis by various cells of the immune system in leukemic mice. However, the nature of these changes was different in cultures of cells from spontaneously leukemic mice from those with transplanted leukemia. Age-related increases in prostaglandin synthesis by various lymphoid cells from spontaneously leukemic AKR mice (8 to 12 months old) occurred at a much earlier age than in BALB/c mice and may be related to the leukemic condition.


Assuntos
Leucemia Linfoide/metabolismo , Tecido Linfoide/metabolismo , Prostaglandinas/biossíntese , Animais , Células da Medula Óssea , Linfonodos/citologia , Macrófagos/metabolismo , Camundongos , Camundongos Endogâmicos AKR , Monócitos/metabolismo , Baço/citologia , Timo/citologia
13.
Cancer Res ; 60(18): 5165-70, 2000 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-11016644

RESUMO

Suberoylanilide hydroxamic acid (SAHA) is the prototype of a family of hybrid polar compounds that induce growth arrest in transformed cells and show promise for the treatment of cancer. SAHA induces differentiation and/or apoptosis in certain transformed cells in culture and is a potent inhibitor of histone deacetylases. In this study, we examined the effects of SAHA on the growth of human prostate cancer cells in culture and on the growth of the CWR22 human prostate xenograft in nude mice. SAHA suppressed the growth of the LNCaP, PC-3, and TSU-Pr1 cell lines at micromolar concentrations (2.5-7.5 microM). SAHA induced dose-dependent cell death in the LNCaP cells. In mice with transplanted CWR222 human prostate tumors, SAHA (25, 50, and 100 mg/kg/day) caused significant suppression of tumor growth compared with mice receiving vehicle alone; treatment with 50 mg/kg/day resulted in a 97% reduction in the mean final tumor volume compared with controls. At this dose, there was no detectable toxicity as evaluated by weight gain and necropsy examination. Increased accumulation of acetylated core histones was detected in the CWR22 tumors within 6 h of SAHA administration. SAHA induced prostate-specific antigen mRNA expression in CWR22 prostate cancer cells, resulting in higher levels of serum prostate-specific antigen than predicted from tumor volume alone. The results suggest that hydroxamic acid-based hybrid polar compounds inhibit prostate cancer cell growth and may be useful, relatively nontoxic agents for the treatment of prostate carcinoma.


Assuntos
Antineoplásicos/farmacologia , Inibidores Enzimáticos/farmacologia , Ácidos Hidroxâmicos/farmacologia , Neoplasias da Próstata/tratamento farmacológico , Animais , Antineoplásicos/toxicidade , Morte Celular/efeitos dos fármacos , Divisão Celular/efeitos dos fármacos , Inibidores Enzimáticos/toxicidade , Inibidores do Crescimento/farmacologia , Inibidores de Histona Desacetilases , Histonas/metabolismo , Humanos , Ácidos Hidroxâmicos/toxicidade , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Transplante de Neoplasias , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/enzimologia , Neoplasias da Próstata/patologia , Transplante Heterólogo , Células Tumorais Cultivadas/efeitos dos fármacos , Vorinostat
14.
J Nutr Health Aging ; 20(1): 77-81, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26728937

RESUMO

OBJECTIVES: To examine the association between Proton pump inhibitors (PPIs) use and falls and fractures. DESIGN: A cross-sectional study. SETTING AND PARTICIPANTS: 400 female patients aged 70 years or older who were consecutively admitted to the Trauma Center Meidling, Vienna, after a fall and who required hospital admission. METHODS: We quantified the strength of the associations between PPI use and falls, and between PPI use and fractures, using a logistic regression. RESULTS: use of PPIs was significantly associated with risk of recurrent falls (OR 1.92, 95% CI = 1.05 - 3.50, p = 0.04) as well as with risk of a fracture (OR 2.15, 95% CI 1.10 - 4.21, p = 0.03). CONCLUSIONS: In conclusion, our results provide further evidence that PPI use may increase risk of falls and fractures in older women and highlight the need for clinicians to reassess the original indication and the need for continuation of PPIs on a regular basis.


Assuntos
Acidentes por Quedas , Fraturas Ósseas , Inibidores da Bomba de Prótons/efeitos adversos , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Feminino , Hospitalização , Humanos , Modelos Logísticos , Razão de Chances , Fatores de Risco
15.
Brain Imaging Behav ; 10(2): 486-96, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26153467

RESUMO

Hematopoietic stem cell transplantation (HSCT) is often used in the treatment of hematologic disorders. Although it can be curative, the pre-transplant conditioning regimen can be associated with neurotoxicity. In this prospective study, we examined white matter (WM) integrity with diffusion tensor imaging (DTI) and neuropsychological functioning before and one year after HSCT in twenty-two patients with hematologic disorders and ten healthy controls evaluated at similar intervals. Eighteen patients received conditioning treatment with high-dose (HD) chemotherapy, and four had full dose total body irradiation (fTBI) and HD chemotherapy prior to undergoing an allogeneic or autologous HSCT. The results showed a significant decrease in mean diffusivity (MD) and axial diffusivity (AD) in diffuse WM regions one year after HSCT (p-corrected <0.05) in the patient group compared to healthy controls. At baseline, patients treated with allogeneic HSCT had higher MD and AD in the left hemisphere WM than autologous HSCT patients (p-corrected <0.05). One year post-transplant, patients treated with allogeneic HSCT had lower fractional anisotropy (FA) and higher radial diffusivity (RD) in the right hemisphere and left frontal WM compared to patients treated with autologous HSCT (p-corrected <0.05).There were modest but significant correlations between MD values and cognitive test scores, and these were greatest for timed tests and in projection tracts. Patients showed a trend toward a decline in working memory, and had lower cognitive test scores than healthy controls at the one-year assessment. The findings suggest a relatively diffuse pattern of alterations in WM integrity in adult survivors of HSCT.


Assuntos
Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Substância Branca/patologia , Adulto , Células-Tronco Adultas/fisiologia , Células-Tronco Adultas/transplante , Idoso , Anisotropia , Encéfalo/patologia , Cognição/fisiologia , Transtornos Cognitivos/fisiopatologia , Imagem de Tensor de Difusão/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Substância Branca/anatomia & histologia
16.
Oncogene ; 5(12): 1839-42, 1990 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-2284103

RESUMO

Expression of transforming growth factor alpha (TGF alpha) is frequently associated with the development of human and animal tumors. Using a sensitive immunohistochemical assay, which can be applied on formalin-fixed, paraffin-embedded tissue, we have examined the expression of TGF alpha in 71 human gliomas (63 untreated and 8 recurrent tumors). Tumors were graded by a 3-grade-system: grade I = low grade gliomas, grade II = anaplastic gliomas and grade III = glioblastomas. A strong positive correlation between tumor grade and extent of TGF alpha expression was found (P less than 0.0001). Polymerase chain reaction (PCR) was used to amplify the fourth exon of the TGF alpha gene of 8 glioma DNA specimens and increasing amounts of normal human DNA, which served as a standard. No amplification of the TGF alpha gene copy number in tumors could be detected.


Assuntos
Neoplasias Encefálicas/genética , Regulação Neoplásica da Expressão Gênica/genética , Glioma/genética , Fator de Crescimento Transformador alfa/genética , Sequência de Bases , Neoplasias Encefálicas/metabolismo , Neoplasias Encefálicas/patologia , DNA de Neoplasias/genética , DNA de Neoplasias/metabolismo , Amplificação de Genes , Glioma/metabolismo , Glioma/patologia , Humanos , Imuno-Histoquímica , Dados de Sequência Molecular , Reação em Cadeia da Polimerase , Fator de Crescimento Transformador alfa/metabolismo
17.
J Clin Oncol ; 10(4): 635-43, 1992 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-1548527

RESUMO

PURPOSE: Primary CNS lymphoma (PCNSL), formerly rare, is being seen with increased frequency among apparently immunocompetent patients. Conventional treatment has consisted of whole-brain radiotherapy (RT) and corticosteroids, with a median survival of 15 to 18 months and a 3% to 4% 5-year survival. Chemotherapy has been useful in the treatment of recurrent PCNSL. In 1985 we began a treatment protocol using chemotherapy and cranial irradiation for the initial therapy of non-AIDS PCNSL. PATIENTS AND METHODS: Thirty-one patients (group A) completed the combined modality regimen. All had placement of an Ommaya reservoir and received pre-RT systemic methotrexate, 1 g/m2, plus six doses of intra-Ommaya methotrexate at 12 mg per dose. A full course of cranial RT (4,000-cGy whole-brain RT plus a 1,440-cGy boost) was followed by two cycles of high-dose cytarabine (ara-C), with each course consisting of two doses of 3 g/m2 ara-C separated by 24 hours and infused over 3 hours. During this period, 16 additional patients (group R) were treated with RT alone, either because patients refused chemotherapy or RT was initiated before our consultation; all would have been eligible to participate in the protocol. Follow-up extended through April 1, 1991. RESULTS: Group A had a significantly prolonged time to recurrence (median, 41 months) compared with group R (median, 10 months; P = .003). Although median survival was doubled from 21.7 months for group R to 42.5 months for group A, this was not statistically significant because of small sample size. More importantly, group R patients received systemic chemotherapy for recurrent PCNSL, which improved survival. CONCLUSION: The addition of chemotherapy to cranial RT for initial treatment of PCNSL significantly improved disease-free survival and contributed to overall survival; all non-AIDS patients with newly diagnosed PCNSL should be considered for combined modality therapy.


Assuntos
Neoplasias do Sistema Nervoso Central/tratamento farmacológico , Neoplasias do Sistema Nervoso Central/radioterapia , Linfoma/tratamento farmacológico , Linfoma/radioterapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias do Sistema Nervoso Central/patologia , Terapia Combinada , Feminino , Humanos , Linfoma/patologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Recidiva , Análise de Sobrevida
18.
J Clin Oncol ; 13(3): 748-55, 1995 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-7884435

RESUMO

PURPOSE: To evaluate the prevalence of pain and depression, their correlation, and their effect on quality of life in patients with recently diagnosed adenocarcinoma of the pancreas (PC). MATERIALS AND METHODS: Cross-sectional pain and psychosocial distress were assessed using validated instruments, including the Memorial Pain Assessment Card (MPAC), Beck Depression Inventory (BDI), Hopelessness Scale (BHS), and Functional Living Index-Cancer (FLIC). Patients were evaluated before their first operation for PC or first treatment with chemotherapy at a large tertiary-care cancer center. RESULTS: One hundred thirty patients with proven PC were studied: 83 before their operation and 47 before their first chemotherapy treatment. At the time of study entrance, 37% of patients had no pain and an additional 34% had pain that was mild or less severe. Only 29% of patients had moderate, strong, or severe pain. Chemotherapy patients reported significantly more intense pain than did preoperative patients (P = .02). Symptoms of depression were assessed using the BDI and BHS scales. A substantial minority of patients (38%) had BDI scores > or = 15, which suggests high levels of depressive symptoms. There was a significant correlation between increasing pain and depressive symptoms among those who experienced pain. Quality of life was assessed using the Weekly Activity Checklist (WAC) and the FLIC. Compared with patients who had no pain or mild pain, patients with moderate or greater pain had significantly impaired functional activity (P = .03) and poorer quality-of-life scores (P = .02) when compared with those with lesser degrees of pain. There were significant correlations between increasing pain and depression and between pain and depressive symptoms and impaired quality of life and function. CONCLUSION: Our results indicate that moderate or severe pain and symptoms of depression are not as prevalent in recently diagnosed PC patients as is generally believed. However, one third have inadequate pain control despite the use of oral analgesics. These patients can be identified by the use of a simple self-report instrument (the MPAC card). Quality of life and function are adversely affected by moderate or greater levels of perceived pain intensity. A simple and rapid assessment is possible and can identify high-risk patients in need of intervention that may improve quality of life.


Assuntos
Adenocarcinoma/psicologia , Depressão/etiologia , Dor/etiologia , Neoplasias Pancreáticas/psicologia , Adenocarcinoma/diagnóstico , Estudos Transversais , Depressão/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor/epidemiologia , Neoplasias Pancreáticas/diagnóstico , Prevalência , Estudos Prospectivos , Qualidade de Vida , Estresse Psicológico/etiologia , Estresse Psicológico/psicologia
19.
Clin Cancer Res ; 2(2): 295-302, 1996 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-9816172

RESUMO

Macrophage colony-stimulating factor (M-CSF) is a lineage-specific, homodimeric growth factor that supports the proliferation and maturation of bone marrow progenitors and the survival and function of mononuclear/macrophage cells. In vitro studies have demonstrated antitumor activity of macrophage colony-stimulating factor-treated monocytes against melanoma target cells. A Phase I study was conducted by administering the glycosylated form of the protein to patients with metastatic melanoma as two 7-day continuous i.v. infusions separated by a 2-week rest. Cohorts of three patients per dose level received escalating doses of 10-160 microgram/kg/day. Safety, clinical, and biological effects were evaluated. The infusions were well tolerated with occasional maximum grade 2 nonhematological toxicity. Rapidly reversible thrombocytopenia was the major hematological adverse effect. Its etiology may in part be explained by proliferation and activation of monocyte/macrophage cells in bone marrow samples. Evidence for a biological effect on tumors was suggested by the delayed, complete disappearance of multiple lesions in one patient and a decrease in the size of one marker lesion in a second patient with a mixed response. Fasting serum cholesterol levels decreased during the infusions and may represent an additional therapeutic application for this growth factor.


Assuntos
Fator Estimulador de Colônias de Macrófagos/efeitos adversos , Melanoma/terapia , Adulto , Idoso , Feminino , Humanos , Infusões Intravenosas , Fator Estimulador de Colônias de Macrófagos/administração & dosagem , Fator Estimulador de Colônias de Macrófagos/farmacocinética , Masculino , Melanoma/secundário , Pessoa de Meia-Idade , Proteínas Recombinantes/efeitos adversos
20.
AIDS ; 2(2): 81-8, 1988 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-3132951

RESUMO

The AIDS dementia complex (ADC) is a frequent complication of advanced HIV infection. In order to better define the neuropsychological character and progression of the ADC, four groups of subjects were studied with a battery of neuropsychological tests: an HIV-seronegative comparison group (n = 20), asymptomatic HIV-seropositive patients (n = 16), newly diagnosed AIDS patients (n = 44) and AIDS patients who were referred for neurological consultation (n = 40). Results showed significant reductions in performance in the two AIDS groups, with impairment being most prominent in tests that assessed motor speed and fine control, concentration, problem solving and visuospatial performance. This pattern of neuropsychological dysfunction is consistent with the characterization of the ADC as a subcortical dementia.


Assuntos
Síndrome da Imunodeficiência Adquirida/psicologia , Demência/diagnóstico , Síndrome da Imunodeficiência Adquirida/complicações , Adulto , Análise de Variância , Demência/etiologia , Escolaridade , Soropositividade para HIV/complicações , Soropositividade para HIV/psicologia , Humanos , Memória , Destreza Motora , Testes Neuropsicológicos , Resolução de Problemas , Comportamento Verbal
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