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1.
Infection ; 49(2): 277-285, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33095391

RESUMO

PURPOSE: Invasive candidiasis (IC) is a challenging clinical condition, burdened by relevant mortality and morbidity. There is limited knowledge on the occurrence and management of IC in Internal Medicine Units (IMUs). Aim of this study was to provide real-world data on this topic. METHODS: Consecutive objectively diagnosed cases of IC were collected in this prospective registry, which involved 18 IMUs in Italy. Patients were followed-up to 90 days from the diagnosis of candidemia. RESULTS: A total of 111 patients were observed (median age 78, IQR 67-83) for an overall incidence of infection of 1.89 cases/1000 hospital admissions. Candida albicans was the most frequent isolated species (62%), followed by Candida parapsilosis (17%) and Candida glabrata (13%). Echinocandins and fluconazole were used as initial therapy in 56.8 and 43.2% of patients, respectively. Antifungal therapy was started within 24 h in 18.9% of patients, in 40.6% in the period 1-3 days, and in 40.5% of patients more than 3 days after blood cultures. Death rate was 19.8% at 30 days and 40.5% at 90 days. At multivariable analysis concomitant bacteremia (i.e. polymicrobial sepsis), and fluconazole as the initial therapy were associated with an increased risk of death at 90 days. CONCLUSIONS: The incidence of IC is not negligible, and our registry confirmed that these patients have a relevant mortality rate at 90 days. Concomitant bacteremia, featuring polymicrobial sepsis, and starting antifungal treatment with fluconazole instead of echinocandins independently increase the risk of death. Efforts are needed to improve the awareness and management of IC in IMUs.


Assuntos
Candidíase Invasiva , Sociedades Científicas , Idoso , Antifúngicos/uso terapêutico , Candida , Candidíase Invasiva/diagnóstico , Candidíase Invasiva/tratamento farmacológico , Candidíase Invasiva/epidemiologia , Fluconazol/uso terapêutico , Humanos , Itália/epidemiologia , Sistema de Registros
2.
J Biol Regul Homeost Agents ; 30(3): 921-927, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27655522

RESUMO

Although the role of homocysteine (HCys) in secondary cardiovascular prevention has been scaled down, hyper-homocysteinemia remains a risk factor for cerebrovascular events. The aim of this study was to investigate the efficacy of nutraceuticals in lowering HCys serum levels versus a conventional vitamin supplementation in hypertensive subjects at low cardiovascular risk. One-hundred and four patients (mean age 62.8±14.5 years, 63.5% males), 52 for each treatment group, were enrolled. The study recruited patients with stage 1 essential hypertension and hyper-homocysteinemia (HCys ≥15 µmol/L), without a history of cardiovascular and cerebrovascular disease. They were sequentially randomized to receive a combined nutraceutical containing 400 µg folate-6-5-methyltetrahydrofolate, 3 mg vitamin B6, 5 µg vitamin B12, 2.4 mg vitamin B2, 12.5 mg zinc and 250 mg betaine (Normocis400®) once daily for two months, or supplementation with highly dosed folic acid (5 mg/day) (control group). Differences in serum HCys values were compared by ANOVA for repeated measures. A significant HCys reduction in comparison to baseline was found in both groups at the end of the study treatment, from 21.5±8.7 to 10.0±1.7 µmol/L for Normocis400® subjects (p less than 0.0001), and from 22.6±6.2 to 14.3±2.8 µmol/L for controls (p less than 0.0001). HCys reduction was significantly higher among patients treated with Normocis400® (p less than 0.035). The ideal HCys level (i.e. less than 10 µmol/L) was reached in 55.8% of cases in theNormocis400® group, and it was significantly higher than in controls. No side effects were observed in either treatment group. Randomized clinical trials are ongoing to test the effect of folate, B6, and B12 supplementation in primary prevention of cardiovascular and cerebrovascular events. In the meantime, especially when the ideal HCys level is far from being reached, Normocis400® appears to be safe, well tolerated and effective in reducing HCys levels.


Assuntos
Doenças Cardiovasculares/prevenção & controle , Transtornos Cerebrovasculares/prevenção & controle , Suplementos Nutricionais , Hiper-Homocisteinemia/terapia , Idoso , Betaína/uso terapêutico , Doenças Cardiovasculares/epidemiologia , Transtornos Cerebrovasculares/epidemiologia , Feminino , Ácido Fólico/uso terapêutico , Homocisteína/sangue , Humanos , Hiper-Homocisteinemia/sangue , Hiper-Homocisteinemia/complicações , Hipertensão/complicações , Masculino , Pessoa de Meia-Idade , Risco , Resultado do Tratamento , Complexo Vitamínico B/uso terapêutico , Zinco/uso terapêutico
3.
Diabetes Res Clin Pract ; 115: 24-30, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27242119

RESUMO

AIMS: Hypoglycemia is a potential risk in the management of patients suffering from type 2 diabetes (T2DM) and hospitalized in internal medicine units (IMUs). The aim of this analysis was to evaluate incidence of hypoglycemia and related risk factors in a group of patients admitted to IMUs. METHODS: We used the FADOI-DIAMOND study carried out in 53 Italian IMUs. The DIAMOND design included two cross-sectional surveys interspersed with an educational program. In both phases each center reviewed the charts of the last 30 hospitalized patients with known T2DM (n=3167), including information about hypoglycemia during hospital stay. The association between occurrence of hypoglycemia and potential predictors was evaluated by means of a multivariable logistic regression analysis. RESULTS: A total of 385 symptomatic hypoglycemic events were observed (rate=12%). Advanced age, cognitive dysfunction, and nephropathy were associated with hypoglycemia. Hypoglycemia occurred in 19.4% of patients treated according to the insulin sliding-scale method versus 11.4% of patients treated with basal bolus (p<0.01). More patients with hypoglycemia received sulfonylureas versus the no-hypoglycemia group (28.3% versus 20.6%, p<0.001). Significantly longer length of hospital stay and increased in-hospital mortality were found in the group with hypoglycemia compared with the no-hypoglycemia group (12.7±10.9 versus 9.6±6.5 days; 8.8% versus 4.8%, p<0.01). CONCLUSIONS: Hypoglycemia in hospitalized patients with diabetes is associated with increased length of hospitalization and in-hospital mortality. Identification of patients at increased risk of hypoglycemia may be important for optimally adapting treatment and patient management.


Assuntos
Diabetes Mellitus Tipo 2/complicações , Hipoglicemia/etiologia , Idoso , Estudos Transversais , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/mortalidade , Feminino , Mortalidade Hospitalar , Humanos , Hipoglicemia/sangue , Hipoglicemia/mortalidade , Hipoglicemia/prevenção & controle , Hipoglicemiantes/uso terapêutico , Incidência , Insulina/sangue , Insulina/uso terapêutico , Medicina Interna , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Compostos de Sulfonilureia/uso terapêutico
4.
Int J Clin Pract ; 69(1): 33-40, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25283604

RESUMO

PURPOSE: Few real-world data are available on the frequency and management of pain in Internal Medicine (IM). Aims of our study were to assess the prevalence of pain in IM, and to evaluate the effects on pain management of a standardised educational programme. MATERIALS AND METHODS: The study was performed in 26 IM Units in Italy, with two cross-sectional surveys (PRE phase and POST phase) interspersed with an educational programme. In PRE phase each Centre reviewed the hospital charts of the last 100 consecutive patients hospitalised for any cause. An educational programme was conducted in each Centre by means of the 'outreach visit', a face-to-face meeting between health personnel and a trained external expert. Six months after, each Centre repeated the data collection (POST phase), specular to the PRE. RESULTS: A total of 5200 medical charts were analysed. Pain was documented in 37.5% of the patients. After the educational intervention, the intensity of pain was appropriately assessed in a higher percentage of patients (77.4% vs. 47.8%, p = 0.0001), and it was more frequently monitored during hospitalisation. Qualitative definition of pain (pathogenesis, duration, etc.) increased in POST phase (75.4% vs. 62.7%, p = 0.0001). A 73.3% increase in the use of strong opioids was detected following educational programme. CONCLUSIONS: Pain affects 4 out of 10 patients hospitalised in IM. According to our large real-world study, to implement a standardised one-shot educational programme may persistently improve the attitude of health personnel towards the characterisation and management of pain.


Assuntos
Educação/métodos , Conhecimentos, Atitudes e Prática em Saúde , Medicina Interna/métodos , Manejo da Dor/métodos , Manejo da Dor/normas , Estudos Transversais , Feminino , Educação em Saúde , Humanos , Itália , Masculino
5.
Aging Clin Exp Res ; 26(4): 435-43, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24343853

RESUMO

BACKGROUND: E-learning is an efficient and cost-effective educational method. AIMS: This study aimed at evaluating the feasibility of an educational e-learning intervention, focused on teaching geriatric pharmacology and notions of comprehensive geriatric assessment, to improve drug prescribing to hospitalized elderly patients. METHODS: Eight geriatric and internal medicine wards were randomized to intervention (e-learning educational program) or control. Clinicians of the two groups had to complete a specific per group e-learning program in 30 days. Then, ten patients (aged ≥75 years) had to be consecutively enrolled collecting clinical data at hospital admission, discharge, and 3 months later. The quality of prescription was evaluated comparing the prevalence of potentially inappropriate medications through Beer's criteria and of potential drug-drug interactions through a specific computerized database. RESULTS: The study feasibility was confirmed by the high percentage (90 %) of clinicians who completed the e-learning program, the recruitment, and follow-up of all planned patients. The intervention was well accepted by all participating clinicians who judged positively (a mean score of >3 points on a scale of 5 points: 0 = useless; 5 = most useful) the specific contents, the methodology applied, the clinical relevance and utility of e-learning contents and tools for the evaluation of the appropriateness of drug prescribing. CONCLUSIONS: The pilot study met all the requested goals. The main study is currently ongoing and is planned to finish on July 2015.


Assuntos
Aprendizagem/fisiologia , Educação de Pacientes como Assunto/métodos , Idoso , Idoso de 80 Anos ou mais , Interações Medicamentosas/fisiologia , Prescrições de Medicamentos , Uso de Medicamentos , Feminino , Avaliação Geriátrica/métodos , Geriatria/métodos , Hospitalização , Hospitais , Humanos , Internet , Masculino , Alta do Paciente , Projetos Piloto , Prevalência
6.
Int J Cardiol ; 152(1): 88-94, 2011 Oct 06.
Artigo em Inglês | MEDLINE | ID: mdl-21397348

RESUMO

BACKGROUND: Heart failure (HF) is a major health and social problem. Internal Medicine (IM) wards admit a high proportion of patients with HF, frequently with advanced age and comorbidities. Few recent data are available in this setting, especially on predictors of in-hospital outcome. METHODS: In this observational study, we recruited patients admitted with diagnosis of HF and present in five index days, in 91 units of IM in Italy. Characteristics and management of HF, comorbidities, functional and cognitive status, and quality of life, were analyzed. RESULTS: We observed 1411 patients, with a mean age of 78.7 ± 9.6 years. At admission, 81.7% of the patients were in NYHA classes III-IV. Ninety percent of the patients had at least one comorbidity. Dementia or severely impaired functional status were registered in 21.5% and 22.8% of the patients. In 89 patients (6,3%) a negative outcome (death or clinical worsening) occurred during hospitalization. A number of variables were significantly related to negative outcome by means of univariate analysis (systolic blood pressure <100 mm Hg, pulse pressure ≥ 55 mm Hg, anaemia, brain deficit, permanent bed rest, Barthel Index ≤ 30). At multivariable analysis, significant correlation was retained by anaemia and Barthel Index ≤ 30, the latter being the strongest predictor. CONCLUSIONS: Real-world patients with HF and hospitalized in IM are frequently very old, frail and with multiple comorbidities. Functional and cognitive status significantly influence patients' outcome, and this could lead to a rethinking of the overall (in-hospital but also home-based) management of HF.


Assuntos
Nível de Saúde , Insuficiência Cardíaca/mortalidade , Insuficiência Cardíaca/fisiopatologia , Pacientes Internados/estatística & dados numéricos , Qualidade de Vida , Adulto , Idoso , Idoso de 80 Anos ou mais , Comorbidade , Feminino , Insuficiência Cardíaca/terapia , Mortalidade Hospitalar , Humanos , Medicina Interna/estatística & dados numéricos , Tempo de Internação/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Valor Preditivo dos Testes , Prognóstico , Recuperação de Função Fisiológica , Índice de Gravidade de Doença
8.
Eur J Vasc Endovasc Surg ; 34(2): 194-8, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17433732

RESUMO

OBJECTIVES: To evaluate the effects of iloprost, in addition to surgery, on the outcome of acute lower limb ischemia (ALLI). DESIGN: Post-hoc analysis of a randomized, double-blind, placebo-controlled study. METHODS: In the context of the ILAILL (ILoprost in Acute Ischemia of Lower Limbs) study, 192 elderly patients (>70 years old) undergoing surgery for ALLI were assigned to receive perioperative iloprost (intra-arterial, intra-operative bolus of 3000 ng, plus intravenous infusion of 0.5-2.0 ng/kg/min for six hours/day for 4-7 days following surgery), or placebo (iloprost: n=100; placebo: n=92). Patients were followed-up for three-months following surgical revascularization. RESULTS: The combined incidence of death and amputation (primary study end-point) was significantly reduced in patients treated with iloprost (16.0% vs 27.2% in the placebo group; hazard ratio 1.99, 95% confidence interval 1.05-3.75, p=0.03). A statistically significant lower mortality (6.0%) was reported in patients receiving iloprost, compared to controls (15.2%) (hazard ratio 2.93, 1.11-7.71, p=0.03). The overall incidence of death and major cardiovascular events was lower in patients receiving iloprost compared to those assigned placebo (24.0% and 35.9%, respectively), at the limits of statistical significance (relative risk 1.64, 0.97-2.79, p=0.06). CONCLUSIONS: These results confirm the poor outcome in elderly patients with ALLI. Based on a subgroup analysis iloprost, as an adjuvant to surgery, appears to reduce the combined end-point of death and amputation.


Assuntos
Amputação Cirúrgica , Fármacos Cardiovasculares/uso terapêutico , Extremidades/irrigação sanguínea , Iloprosta/uso terapêutico , Isquemia/tratamento farmacológico , Isquemia/cirurgia , Procedimentos Cirúrgicos Vasculares , Doença Aguda , Idoso , Idoso de 80 Anos ou mais , Amputação Cirúrgica/estatística & dados numéricos , Quimioterapia Adjuvante , Método Duplo-Cego , Feminino , Humanos , Incidência , Isquemia/mortalidade , Estimativa de Kaplan-Meier , Masculino , Modelos de Riscos Proporcionais , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
9.
Nutr Metab Cardiovasc Dis ; 16(2): 137-47, 2006 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-16487914

RESUMO

BACKGROUND AND AIM: The aim of this trial was to evaluate the effect of doxazosin as add-on therapy in patients with hypertension not adequately controlled on current antihypertensive therapy, and impaired glucose metabolism. The effect of doxazosin administered as add-on therapy was to be considered significant both from clinical and statistical viewpoints if the proportion of patients with adequate control of blood pressure (BP<130/85 mmHg) would be at least 30% after 16 weeks of combined therapy. METHOD AND RESULTS: It was an open, multicenter phase IV study, lasting 19 weeks: 3-week qualifying/placebo run-in period+16-week dose titration/add on therapy period, involving 264 out-patients (158 m and 106 f; mean age+/-SD: 60.9+/-8.6 years; mean BMI+/-SD: basal 29.5+/-5.1, final 30.2+/-4.6) with blood pressure still >130/85 mmHg in spite of the antihypertensive treatment (ACE inhibitors 44%, AT II antagonists 21%, Ca antagonists 12%, other drugs 8%, polytherapy 15%) and affected by type 2 diabetes (n=219), impaired fasting glucose (IFG; n=16) or impaired glucose tolerance (IGT; n=29). Following a run-in, 3-week qualifying phase during which placebo was added to ongoing antihypertensive treatment, 16-week treatment with doxazosin was added at dosages from 1 up to 8 mg/day. Main outcome measures were: the percentage of patients with blood pressure <130/85 mmHg at the end of treatment; the effects of the combination therapy on glyco-lipidic metabolism: fasting plasma glucose, fasting insulin, glycated hemoglobin, insulin resistance (HOMA-R), plasma lipids; and the effect on the 10-year CHD risk (Framingham equation). RESULTS: 35% of patients were responsive (BP<130/85 mmHg) to add-on treatment with doxazosin (CI 90%: 30.3%-40.4%; P<0.05, stat. an. intention to treat). During the run-in phase with placebo, mean SBP/DBP (+/-SD) decreased from 155.6+/-13.2/91.8+/-6.8 mmHg (Week -3) to 151.9+/-12.9/90.1+/-7.2 mmHg (Week -1) and to 151.2+/-11.5/90.1+/-6.9 mmHg (Week 0). During add-on treatment with doxazosin, mean SBP/DBP (+/-SD) further decreased to 144.9+/-15.2/86.3+/-8.3 mmHg (Week 4), 139.7+/-15.3/83.4+/-7.9 mmHg (Week 8), 135.5+/-14.3/81.7+/-7.6 mmHg (Week 12) and 136.4+/-14.5/81.0+/-7.0 mmHg (Week 16). Overall, mean BP changes reached a plateau of about -15 mmHg (SBP) and -9 mmHg (DBP) after 16 weeks of treatment; at each visit the mean decreases from baseline were statistically significant. The following mean values of metabolic parameters were reduced during the study: fasting plasma glucose (-4.1mg/dl; -2.8%), fasting insulin (-2 microU/ml; -12.3%; P<0.05), glycated hemoglobin (-0.12%; -1.7%), HOMA-R (-1.03; -18.2%; P<0.05), total cholesterol (-1.85 mg/dl; -1.1%), LDL cholesterol (-1.35 mg/dl; -0.8%) and triglycerides (-5.64 mg/dl; -2.4%); mean HDL cholesterol increased (+1.79 mg/dl; +3.9%; P<0.01). At the end of study treatment, the percentage of patients with lab values returned within normal ranges, in comparison with basal values, was statistically significant (P<0.05) for the following parameters: fasting plasma glucose (6.3%), fasting insulin (7.5%), LDL cholesterol (6.0%). Ten-year CHD risk (+/-SD) decreased from 16.4+/-7.8% to 13.6+/-7.4% (final vs. basal: -2.87+/-3.9; -17%; P<0.01). Six patients (2.3%) reported 8 adverse drug reactions: dizziness (3), edema (2), headache (2), asthenia (1). In one out of these 6 patients, in whom doxazosin was associated to the ACE inhibitor quinapril, adverse reaction (peripheral edema) led to treatment withdrawal. CONCLUSION: In patients not responsive to antihypertensive treatment and concomitantly affected by impaired glucose metabolism, achievement of target BP was obtained in more than one third of cases after 16-week add-on treatment with doxazosin. Changes in glyco-lipidic parameters and reduction of 10-year CHD risk observed during the study, although of moderate extent, confirm the overall favourable effect of antihypertensive combinations including doxazosin.


Assuntos
Antagonistas Adrenérgicos alfa/uso terapêutico , Anti-Hipertensivos/uso terapêutico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Doxazossina/uso terapêutico , Hipertensão/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Área Sob a Curva , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Bloqueadores dos Canais de Cálcio/uso terapêutico , Relação Dose-Resposta a Droga , Doxazossina/efeitos adversos , Quimioterapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
10.
Eur J Endocrinol ; 141(4): 396-408, 1999 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-10526255

RESUMO

OBJECTIVE: Somatostatin is a powerful inhibitor of hormone secretion and cell proliferation. Treatment with somatostatin analogs in humans causes a reduction in size and secretory activity of some endocrine tumors, including somatotropic pituitary adenomas. Less studied are the effects of somatostatin agonists on non-functioning pituitary adenomas (NFPAs). In this study we characterized the effects of somatostatin and its analog lanreotide on the proliferation of NFPAs in vitro and the intracellular mechanisms involved. DESIGN: Twenty-three NFPA post-surgical specimens were analyzed for somatostatin receptor (SSTR) expression and 12 of them were cultured in vitro to study somatostatin's effects on cell proliferation, assessed by means of [(3)H]thymidine uptake, and the intracellular signaling. RESULTS: One or more SSTR subtypes were expressed in 90% of the adenomas tested. Somatostatin and lanreotide treatment inhibited phorbol myristate acetate (PMA)-induced cell proliferation. Vanadate pretreatment reversed somatostatin and lanreotide inhibition of PMA-induced DNA synthesis suggesting an involvement of tyrosine phosphatase in this effect. In the only adenoma tested, somatostatin directly induced a tyrosine phosphatase activity. Somatostatin and lanreotide caused also a significant inhibition of voltage-sensitive calcium channel activity induced by 40mmol/l K(+) depolarization in microfluorimetric analysis. CONCLUSIONS: These data show that somatostatin and lanreotide inhibit human NFPA cell proliferation in vitro, and suggest that activation of tyrosine phosphatases and inhibition of the activity of voltage-dependent calcium channels may represent intracellular signals mediating this effect.


Assuntos
Adenoma/tratamento farmacológico , Peptídeos Cíclicos/farmacologia , Neoplasias Hipofisárias/tratamento farmacológico , Somatostatina/análogos & derivados , Somatostatina/farmacologia , Adenoma/patologia , Canais de Cálcio/efeitos dos fármacos , Divisão Celular/efeitos dos fármacos , Ensaios de Seleção de Medicamentos Antitumorais , Feminino , Humanos , Masculino , Potenciais da Membrana/efeitos dos fármacos , Pessoa de Meia-Idade , Neoplasias Hipofisárias/patologia , Células Tumorais Cultivadas
12.
Eur J Clin Invest ; 27(4): 277-84, 1997 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-9134375

RESUMO

Medical therapy is frequently needed to normalize growth hormone/insulin-like growth factor I secretion in acromegaly. The aim of this study was to determine the long-term effects of the slow-release (SR) somatostatin analogue lanreotide in 57 acromegalic patients. SR lanreotide (30 mg) was given every 14 days for 12 months. In 33% of patients, the drug dosage was raised to 60 mg and/or the time interval was shortened to 10 days. Two months of clinical evaluation followed drug discontinuation in 47 out of 48 (84%) patients who completed the 12-month period. A drug-related decrease in GH/IGF-I levels was observed. Basal GH/IGF-I levels were significantly (P < 0.001) reduced at 12 months, IGF-I was normalized in 35% of patients and GH levels were < 5 micrograms L-1 in 54%. There was a clinical improvement in patients complaining of joint pain, rachialgias, headache, digital paraesthesias and hyperhidrosis. Soft-tissue changes were documented by significant (P < 0.001) decreases in finger size. In 52 (91%) patients without overt diabetes, a slight but significant increase in integrated glycaemia (P < 0.001) was noted, while integrated insulin levels were reduced (P < 0.001). Of 33 (58%) patients with normal basal ultrasound examination of the gall bladder, three (9%) had developed asymptomatic gall stones or biliary sludge after 12 months. Adverse events were generally mild. They frequently (52%) occurred after the first SR lanreotide administration; only 28% were recurrent and 20% appeared for the first time during therapy. SR lanreotide is an effective treatment in most unselected acromegalic patients. Tolerance towards the drug is high. Subjective benefits seem to override the simple biochemical control of the disease. Glucose homeostasis more than the incidence of gall stones seems to require monitoring on therapy. SR lanreotide is clearly advantageous in improving patient compliance with medical treatment for acromegaly.


Assuntos
Acromegalia/tratamento farmacológico , Peptídeos Cíclicos/administração & dosagem , Somatostatina/análogos & derivados , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Vesícula Biliar/diagnóstico por imagem , Hormônio do Crescimento Humano/sangue , Humanos , Fator de Crescimento Insulin-Like I/análise , Masculino , Pessoa de Meia-Idade , Peptídeos Cíclicos/efeitos adversos , Somatostatina/administração & dosagem , Somatostatina/efeitos adversos , Ultrassonografia
13.
FEBS Lett ; 397(2-3): 164-8, 1996 Nov 18.
Artigo em Inglês | MEDLINE | ID: mdl-8955339

RESUMO

Somatostatin possesses antisecretory and antiproliferative activity on some human tumors. We herein report that, in a human neuroblastoma cell line, the somatostatin analogue BIM 23014 inhibited mitogen-activated protein (MAP) kinase activity stimulated by either insulin-like growth factor-1, whose receptor bears a tyrosine kinase, or carbachol, which acts at a G-protein coupled receptor. In a human small cell lung carcinoma line BIM inhibited serum-stimulated MAP kinase activation. These inhibitory actions occur in a dose range quite similar to that observed for suppression of proliferation induced by the analogue in the same cell lines. The decrease in cAMP elicited by the analogue in the two cell lines is not responsible for its inhibitory action on MAP kinase and cell growth. Moreover, the analogue did not modify intracellular [Ca2+] and pH. An involvement of a phosphatase activity is suggested.


Assuntos
Antineoplásicos/farmacologia , Proteínas Quinases Dependentes de Cálcio-Calmodulina/antagonistas & inibidores , Divisão Celular/efeitos dos fármacos , Inibidores Enzimáticos/farmacologia , Peptídeos Cíclicos/farmacologia , Somatostatina/análogos & derivados , Cálcio/metabolismo , Proteínas Quinases Dependentes de Cálcio-Calmodulina/metabolismo , Carbacol/farmacologia , Carcinoma de Células Pequenas/enzimologia , Carcinoma de Células Pequenas/patologia , AMP Cíclico/metabolismo , Ativação Enzimática/efeitos dos fármacos , Humanos , Concentração de Íons de Hidrogênio , Fator de Crescimento Insulin-Like I/farmacologia , Neoplasias Pulmonares/enzimologia , Neoplasias Pulmonares/patologia , Neuroblastoma/enzimologia , Neuroblastoma/patologia , Transdução de Sinais , Somatostatina/farmacologia , Células Tumorais Cultivadas
14.
J Clin Endocrinol Metab ; 81(6): 2089-97, 1996 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-8964833

RESUMO

The objective of the study was to determine the tolerability and effectiveness of the slow release (SR) somatostatin analog lanreotide in active acromegaly. Fifty-seven patients, unselected in terms of their previous responsiveness to octreotide therapy, were included in a prospective, open label study carried out at 6 Italian endocrinological centers. The effects of 6 months of SR lanreotide, given at first every 14 days at a dosage of 30 mg, im, were recorded. In some patients (33%), drug dosage was adjusted by increasing the dose (to 60 mg, im) and/or shortening the time interval (every 10 days) of SR lanreotide administration. Fifty patients completed the 6-month period of therapy; 2 subjects dropped out because of adverse events, and 5 dropped out because of ineffectiveness after changes in drug administration. The first SR lanreotide injection produced more than 50% suppression of GH levels from the basal value in 93% of patients. Thirteen days later, baseline GH levels were reduced by over 50% in 25% of patients. Mean GH values were normalized in 85% of patients after 6 months, whereas insulin-like growth factor I (IGF-I) levels were normalized in 38% of patients. No correlation was found between pretreatment GH levels and GH response to SR lanreotide or between changes in GH and IGF-I during therapy. During treatment, there was a significant reduction in the percentage of patients complaining of joint pain, hyperhydrosis, and paresthesias. Changes in soft tissue swelling were documented by significant decreases in finger measurements. Diarrhea and abdominal pain were the most frequent side-effects when therapy was started; these progressively decreased. After the first month of therapy, moderate, mild, and no side-effects were reported by 3%, 40%, and 53% of patients. A nonsignificant increase occurred in asymptomatic gallstones and amylase levels. Minimal changes were noted in carbohydrate tolerance, consisting of a slight increase in glycosylated hemoglobin, a rise in glucose and a decrease in pre- and postprandial insulin levels. No effects on PRL, free cortisol, TSH, or free thyroid hormone levels were noted. No significant change in the percentage of visual field abnormalities was noted. Decreases in pituitary tumor size occurred in 3 of 17 patients reevaluated after 6 months of therapy. The 6-month period of SR lanreotide therapy was compared, on an anamnestic basis, with a 6-month or longer period of sc octreotide therapy (median, 300 micrograms/day) in 34 patients. There were no differences in effectiveness or tolerability between the 2 somatostatin analogs. These data indicate that SR lanreotide at a dose of 30 mg, im, every 14 days is an effective treatment in most unselected acromegalic patients. When administered to a group of poorly responsive patients, an increase in drug dose (60 mg im) and/or a shortening of the drug interval (10 days) seem to improve the GH/IGF-I response. Tolerability to SR lanreotide therapy is high. The use of a new sustained release formulation of somatostatin analog is clearly advantageous in improving patient compliance with medical treatment for acromegaly.


Assuntos
Acromegalia/tratamento farmacológico , Peptídeos Cíclicos/uso terapêutico , Somatostatina/análogos & derivados , Adulto , Idoso , Idoso de 80 Anos ou mais , Preparações de Ação Retardada , Feminino , Glucose/fisiologia , Teste de Tolerância a Glucose , Hormônio do Crescimento/sangue , Hormônios/sangue , Humanos , Fator de Crescimento Insulin-Like I/análise , Masculino , Pessoa de Meia-Idade , Octreotida/uso terapêutico , Peptídeos Cíclicos/administração & dosagem , Peptídeos Cíclicos/efeitos adversos , Estudos Prospectivos , Somatostatina/administração & dosagem , Somatostatina/efeitos adversos , Somatostatina/uso terapêutico , Resultado do Tratamento
15.
Recenti Prog Med ; 82(7-8): 397-8, 1991.
Artigo em Italiano | MEDLINE | ID: mdl-1947405

RESUMO

HIV-related thrombocytopenia sometimes requires a therapeutic choice: current therapies are similar to those applied in idiopathic thrombocytopenic purpura. Some Authors described a positive effect on platelets with Zidovudine (AZT) administration. We evaluated the efficacy of this drug in a group of 11 HIV-seropositive patients. Our results were not encouraging: increase in platelet count was obtained in a few patients only and it generally was of little importance.


Assuntos
Soropositividade para HIV/complicações , Trombocitopenia/tratamento farmacológico , Zidovudina/uso terapêutico , Adulto , Avaliação de Medicamentos , Humanos , Masculino , Contagem de Plaquetas , Trombocitopenia/etiologia , Zidovudina/administração & dosagem
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