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1.
Pediatr Res ; 81(2): 307-314, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27814346

RESUMO

BACKGROUND: Oral propranolol reduces retinopathy of prematurity (ROP) progression, although not safely. This study evaluated safety and efficacy of propranolol eye micro-drops in preterm newborns with ROP. METHODS: A multicenter open-label trial, planned according to the Simon optimal two-stage design, was performed to analyze safety and efficacy of propranolol micro-drops in newborns with stage 2 ROP. To this end, hemodynamic and respiratory parameters were monitored, and blood samples were collected weekly, for 3 wk. Propranolol plasma levels were also monitored. The progression of the disease was evaluated with serial ophthalmologic examinations. RESULTS: Twenty-three newborns were enrolled. Since the fourth of the first 19 newborns enrolled in the first stage of the study showed a progression to stage 2 or 3 with plus, the second stage was prematurely discontinued. Even though the objective to complete the second stage was not achieved, the percentage of ROP progression (26%) was similar to that obtained previously with oral propranolol administration. However, no adverse effects were observed and propranolol plasma levels were significantly lower than those measured after oral administration. CONCLUSION: Propranolol 0.1% eye micro-drops are well tolerated, but not sufficiently effective. Further studies are required to identify the optimal dose and administration schedule.


Assuntos
Propranolol/administração & dosagem , Retinopatia da Prematuridade/tratamento farmacológico , Administração Oftálmica , Administração Oral , Administração Tópica , Progressão da Doença , Feminino , Hemodinâmica , Humanos , Recém-Nascido , Masculino , Neovascularização Fisiológica/efeitos dos fármacos , Segurança do Paciente , Projetos Piloto , Propranolol/sangue , Respiração
2.
BMC Pediatr ; 17(1): 165, 2017 Jul 14.
Artigo em Inglês | MEDLINE | ID: mdl-28709412

RESUMO

BACKGROUND: Retinopathy of prematurity (ROP) still represents one of the leading causes of visual impairment in childhood. Systemic propranolol has proven to be effective in reducing ROP progression in preterm newborns, although safety was not sufficiently guaranteed. On the contrary, topical treatment with propranolol eye micro-drops at a concentration of 0.1% had an optimal safety profile in preterm newborns with ROP, but was not sufficiently effective in reducing the disease progression if administered at an advanced stage (during stage 2). The aim of the present protocol is to evaluate the safety and efficacy of propranolol 0.2% eye micro-drops in preterm newborns at a more precocious stage of ROP (stage 1). METHODS: A multicenter, open-label, phase II, clinical trial, planned according to the Simon optimal two-stage design, will be performed to analyze the safety and efficacy of propranolol 0.2% eye micro-drops in preterm newborns with stage 1 ROP. Preterm newborns with a gestational age of 23-32 weeks, with a stage 1 ROP will receive propranolol 0.2% eye micro-drops treatment until retinal vascularization has been completed, but for no longer than 90 days. Hemodynamic and respiratory parameters will be continuously monitored. Blood samplings checking metabolic, renal and liver functions, as well as electrocardiogram and echocardiogram, will be periodically performed to investigate treatment safety. Additionally, propranolol plasma levels will be measured at the steady state, on the 10th day of treatment. To assess the efficacy of topical treatment, the ROP progression from stage 1 ROP to stage 2 or 3 with plus will be evaluated by serial ophthalmologic examinations. DISCUSSION: Propranolol eye micro-drops could represent an ideal strategy in counteracting ROP, because it is definitely safer than oral administration, inexpensive and an easily affordable treatment. Establishing the optimal dosage and treatment schedule is to date a crucial issue. TRIAL REGISTRATION: ClinicalTrials.gov Identifier NCT02504944, registered on July 19, 2015, updated July 12, 2016. EudraCT Number 2014-005472-29.


Assuntos
Antagonistas Adrenérgicos beta/uso terapêutico , Soluções Oftálmicas/uso terapêutico , Propranolol/uso terapêutico , Retinopatia da Prematuridade/tratamento farmacológico , Administração Tópica , Protocolos Clínicos , Feminino , Humanos , Recém-Nascido , Recém-Nascido Prematuro , Masculino , Estudos Prospectivos , Resultado do Tratamento
3.
Pediatr Blood Cancer ; 63(7): 1290-2, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27100060

RESUMO

A newborn with unresectable kaposiform hemangioendothelioma associated with Kasabach Merritt phenomenon, unresponsive to vincristine and prednisone, received second-line treatment with propranolol at a dose of 2 mg/kg/day, starting at 2 months of life and continued for 13 months. There was only slight reduction in tumor mass, but measurement of propranolol levels showed extremely low plasma concentrations. The propranolol dose was progressively increased to 3.5 mg/kg/day, leading to a substantial increase in plasma levels associated with clinically relevant tumor reduction. This case highlights the importance of relating propranolol dose to its plasma concentration before considering the treatment ineffective for this vascular tumor.


Assuntos
Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Hemangioendotelioma/tratamento farmacológico , Doenças do Recém-Nascido/tratamento farmacológico , Síndrome de Kasabach-Merritt/tratamento farmacológico , Propranolol/administração & dosagem , Sarcoma de Kaposi/tratamento farmacológico , Humanos , Recém-Nascido , Masculino
4.
Am J Obstet Gynecol ; 213(6): 839.e1-8, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26232509

RESUMO

OBJECTIVE: This study investigated whether birthweight is linked to an increased risk of the development of systemic sclerosis. STUDY DESIGN: This was a multicenter case-control study with perinatal data that were obtained from 332 cases with systemic sclerosis and 243 control subjects. Birthweight was treated as a dichotomous variable (<2500 g vs ≥2500 g); low birthweight was defined as a weight <2500 g; small for gestational age was defined as birthweight <10th percentile for gestational age adjusted for sex. The relationship between systemic sclerosis and both low birthweight and small for gestational age was expressed with the crude (univariate analysis) and adjusted (multivariate analysis) odds ratio (OR). RESULTS: Significantly increased ORs were observed in the univariate analysis for low birthweight (OR, 2.59; 95% confidence interval [CI], 1.39-5.05) and small for gestational age (OR, 2.60; 95% CI, 1.34-5.32) subjects. Similarly increased risks were confirmed for both conditions in the multivariate analysis (OR, 3.93; 95% CI, 1.92-8.07; and OR, 2.58; 95% CI, 1.28-5.19), respectively. CONCLUSION: Low birthweight and small for gestational age at birth are risk factors for the adult onset of systemic sclerosis.


Assuntos
Peso ao Nascer , Escleroderma Sistêmico/epidemiologia , Idade de Início , Estudos de Casos e Controles , Feminino , Humanos , Recém-Nascido de Baixo Peso , Recém-Nascido , Recém-Nascido Pequeno para a Idade Gestacional , Itália/epidemiologia , Masculino , Idade Materna , Pessoa de Meia-Idade , Análise Multivariada , Gravidez , Fatores de Risco
5.
Sleep Breath ; 19(3): 1057-64, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25631640

RESUMO

PURPOSE: Advanced medical technology has resulted in an increased survival rate of children suffering from congenital central hypoventilation syndrome. After hospitalization, these technology-dependent patients require special home care for assuring ventilator support and the monitoring of vital parameters mainly during sleep. The daily challenges associated with caring for these children can place primary caregivers under significant stress, especially at night. Our study aimed at investigating how this condition affects mothers and fathers by producing poor sleep quality, high-level diurnal sleepiness, anxiety, and depression. METHODS: The study included parents of 23 subjects with congenital central hypoventilation syndrome and 23 healthy subjects. All parents filled out the Pittsburgh Sleep Quality Index (PSQI) questionnaire, Epworth Sleepiness Scale (ESS), Beck Depression Inventory (BDI-II), and Beck Anxiety Inventory (BAI). RESULTS: A comparison between the two groups showed that parents of patients had poorer sleep quality, greater sleepiness, and higher BDI-II scores compared to that of parents of healthy subjects (respectively, PSQI score 6.5 vs 3.8, ESS score 6.2 vs 4.3, BDI-II score 8.4 vs 5.7). Specifically, mothers of patients showed poorer sleep quality and higher BDI-II scores compared to that of mothers of controls (respectively, PSQI score 7.5 vs 3.8, BDI-II score 9.3 vs 5.9), whereas fathers of patients showed greater levels of sleepiness with respect to fathers of healthy children (respectively, ESS score 6.8 vs 4.0). These differences emerged in parents of younger children. CONCLUSIONS: Congenital central hypoventilation syndrome impacts the family with different consequences for mothers and fathers. Indeed, while the patients' sleep is safeguarded, sleeping problems may occur in primary caregivers often associated with other psychological disorders. Specifically, this disease affects sleep quality and mood in the mothers and sleepiness levels in the fathers.


Assuntos
Efeitos Psicossociais da Doença , Pai/psicologia , Hipoventilação/congênito , Mães/psicologia , Apneia do Sono Tipo Central/psicologia , Apneia do Sono Tipo Central/terapia , Transtornos do Sono-Vigília/psicologia , Transtornos do Sono-Vigília/terapia , Adolescente , Ansiedade/psicologia , Criança , Pré-Escolar , Depressão/psicologia , Distúrbios do Sono por Sonolência Excessiva/psicologia , Feminino , Assistência Domiciliar/psicologia , Humanos , Hipoventilação/psicologia , Hipoventilação/terapia , Lactente , Masculino , Respiração Artificial/psicologia , Privação do Sono/psicologia , Inquéritos e Questionários
6.
J Pediatr ; 163(6): 1570-1577.e6, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24054431

RESUMO

OBJECTIVE: To evaluate safety and efficacy of oral propranolol administration in preterm newborns affected by an early phase of retinopathy of prematurity (ROP). STUDY DESIGN: Fifty-two preterm newborns with Stage 2 ROP were randomized to receive oral propranolol (0.25 or 0.5 mg/kg/6 hours) added to standard treatment or standard treatment alone. To evaluate safety of the treatment, hemodynamic and respiratory variables were continuously monitored, and blood samples were collected weekly to check for renal, liver, and metabolic balance. To evaluate efficacy of the treatment, the progression of the disease (number of laser treatments, number of bevacizumab treatments, and incidence of retinal detachment) was evaluated by serial ophthalmologic examinations, and plasma soluble E-selectin levels were measured weekly. RESULTS: Newborns treated with propranolol showed less progression to Stage 3 (risk ratio 0.52; 95% CI 0.47-0.58, relative reduction of risk 48%) or Stage 3 plus (relative risk 0.42 95% CI 0.31-0.58, relative reduction of risk 58%). The infants required fewer laser treatments and less need for rescue treatment with intravitreal bevacizumab (relative risk 0.48; 95% CI 0.29-0.79, relative reduction of risk 52 %), a 100% relative reduction of risk for progression to Stage 4. They also had significantly lower plasma soluble E-selectin levels. However, 5 of the 26 newborns treated with propranolol had serious adverse effects (hypotension, bradycardia), in conjunction with episodes of sepsis, anesthesia induction, or tracheal stimulation. CONCLUSION: This pilot study suggests that the administration of oral propranolol is effective in counteracting the progression of ROP but that safety is a concern.


Assuntos
Antagonistas Adrenérgicos beta/uso terapêutico , Propranolol/uso terapêutico , Retinopatia da Prematuridade/tratamento farmacológico , Antagonistas Adrenérgicos beta/efeitos adversos , Feminino , Humanos , Recém-Nascido Prematuro , Masculino , Projetos Piloto , Propranolol/efeitos adversos , Fatores de Risco , Método Simples-Cego
7.
BMC Pediatr ; 12: 144, 2012 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-22950861

RESUMO

BACKGROUND: Despite progresses in neonatal care, the mortality and the incidence of neuro-motor disability after perinatal asphyxia have failed to show substantial improvements. In countries with a high level of perinatal care, the incidence of asphyxia responsible for moderate or severe encephalopathy is still 2-3 per 1000 term newborns. Recent trials have demonstrated that moderate hypothermia, started within 6 hours after birth and protracted for 72 hours, can significantly improve survival and reduce neurologic impairment in neonates with hypoxic-ischemic encephalopathy. It is not currently known whether neuroprotective drugs can further improve the beneficial effects of hypothermia. Topiramate has been proven to reduce brain injury in animal models of neonatal hypoxic ischemic encephalopathy. However, the association of mild hypothermia and topiramate treatment has never been studied in human newborns. The objective of this research project is to evaluate, through a multicenter randomized controlled trial, whether the efficacy of moderate hypothermia can be increased by concomitant topiramate treatment. METHODS/DESIGN: Term newborns (gestational age ≥ 36 weeks and birth weight ≥ 1800 g) with precocious metabolic, clinical and electroencephalographic (EEG) signs of hypoxic-ischemic encephalopathy will be randomized, according to their EEG pattern, to receive topiramate added to standard treatment with moderate hypothermia or standard treatment alone. Topiramate will be administered at 10 mg/kg once a day for the first 3 days of life. Topiramate concentrations will be measured on serial dried blood spots. 64 participants will be recruited in the study. To evaluate the safety of topiramate administration, cardiac and respiratory parameters will be continuously monitored. Blood samplings will be performed to check renal, liver and metabolic balance. To evaluate the efficacy of topiramate, the neurologic outcome of enrolled newborns will be evaluated by serial neurologic and neuroradiologic examinations. Visual function will be evaluated by means of behavioural standardized tests. DISCUSSION: This pilot study will explore the possible therapeutic role of topiramate in combination with moderate hypothermia. Any favourable results of this research might open new perspectives about the reduction of cerebral damage in asphyxiated newborns.


Assuntos
Frutose/análogos & derivados , Hipotermia Induzida , Hipóxia-Isquemia Encefálica/terapia , Fármacos Neuroprotetores/uso terapêutico , Terapia Combinada , Frutose/efeitos adversos , Frutose/uso terapêutico , Humanos , Recém-Nascido , Fármacos Neuroprotetores/efeitos adversos , Topiramato
9.
Epilepsia ; 52(4): 794-801, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21371018

RESUMO

PURPOSE: Therapeutic hypothermia has recently been introduced to treat term newborns with hypoxic-ischemic encephalopathy, of whom more than half have seizures. Phenobarbital is widely used to treat neonatal seizures, but it is unknown whether its pharmacokinetics is affected by hypothermia. We evaluated the influence of hypothermia on phenobarbital pharmacokinetics in asphyxiated newborns. METHODS: Nineteen term asphyxiated newborns treated with mild whole body hypothermia, started within 6 h after birth and protracted for 72 h, received phenobarbital for clinical seizures. Treatment schedule consisted of a loading dose of 20 mg/kg, titrated to response, up to a maximum dose of 40 mg/kg, followed by a maintenance dose of 2.5 or 1.5 mg/kg every 12 h. Phenobarbital concentrations were measured on 28 dried blood spots in each newborn. KEY FINDINGS: Eighteen newborns showed plasma concentrations within the reference range after receiving a loading dose of 20 mg/kg. In the remaining newborn, who had received a loading dose of 35 mg/kg, phenobarbital concentrations exceeded the upper reference limit. Phenobarbital concentrations reached a virtual steady state in all newborns. Pharmacokinetic parameters were then calculated. Minimum and maximum concentration (24.7 ± 8.8 and 30.63 ± 10.3 mg/L), average plasma concentration (27.37 ± 9.4 mg/L), and half-life (173.9 ± 62.5 h) were considerably higher than reported in literature for normothermic newborns. Pharmacokinetic parameters did not differ significantly between infants receiving different maintenance doses. SIGNIFICANCE: Phenobarbital administered to newborns under whole body hypothermia results in higher plasma concentrations and longer half-lives than expected in normothermic newborns.


Assuntos
Asfixia Neonatal/terapia , Hipóxia-Isquemia Encefálica/terapia , Fenobarbital/farmacocinética , Convulsões/tratamento farmacológico , Anticonvulsivantes/administração & dosagem , Anticonvulsivantes/farmacocinética , Asfixia Neonatal/complicações , Temperatura Corporal/efeitos dos fármacos , Temperatura Corporal/fisiologia , Humanos , Hipotermia Induzida/efeitos adversos , Hipotermia Induzida/métodos , Hipóxia-Isquemia Encefálica/complicações , Recém-Nascido , Avaliação de Resultados em Cuidados de Saúde/métodos , Fenobarbital/administração & dosagem , Convulsões/etiologia , Resultado do Tratamento
10.
J Pediatr ; 157(3): 361-6, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20553846

RESUMO

OBJECTIVE: To investigate whether topiramate associated with mild or deep hypothermia in asphyxiated term infants is safe in relation to the short-term outcome. STUDY DESIGN: We report on 27 consecutive asphyxiated newborns who were treated with whole body hypothermia and 27 additional consecutive newborns with hypothermia who were co-treated with oral topiramate, once a day for 3 consecutive days, at 2 different doses. RESULTS: Newborns were divided in 6 groups according to the depth of hypothermia and the association with higher or lower topiramate dosage. A statistical comparison of the groups identified some differences in biochemical and hemodynamic variables, but no adverse effects attributable to topiramate were detected. There were no statistically significant differences in the groups in short-term outcomes, survival rate at discharge, or incidence of pathologic brain magnetic resonance imaging. CONCLUSION: Although the number of newborns in this study was limited, the short-term outcome and the safety data appear to support the evaluation of topiramate in clinical trials to explore its possible additive neuroprotective action.


Assuntos
Frutose/análogos & derivados , Hipotermia Induzida , Hipóxia-Isquemia Encefálica/terapia , Fármacos Neuroprotetores/administração & dosagem , Administração Oral , Terapia Combinada , Feminino , Frutose/administração & dosagem , Humanos , Recém-Nascido , Masculino , Estudos Retrospectivos , Topiramato
11.
BMC Pediatr ; 10: 83, 2010 Nov 18.
Artigo em Inglês | MEDLINE | ID: mdl-21087499

RESUMO

BACKGROUND: Despite new therapeutic approaches have improved the prognosis of newborns with retinopathy of prematurity (ROP), an unfavourable structural and functional outcome still remains high. There is high pressure to develop new drugs to prevent and treat ROP. There is increasing enthusiasm for anti-VEGF drugs, but angiogenic inhibitors selective for abnormal blood vessels would be considered as an optimal treatment.In an animal experimental model of proliferative retinopathy, we have recently demonstrated that the pharmacological blockade of beta-adrenoreceptors improves retinal neovascularization and blood retinal barrier breakdown consequent to hypoxia. The purpose of this study is to evaluate the propranolol administration in preterm newborns suffering from a precocious phase of ROP in terms of safety and efficacy in counteracting the progression of retinopathy. METHODS/DESIGN: Preterm newborns (gestational age at birth lower than 32 weeks) with stage 2 ROP (zone II-III without plus) will be randomized, according to their gestational age, to receive propranolol added to standard treatment (treatment adopted by the ETROP Cooperative Group) or standard treatment alone. Propranolol will be administered until retinal vascularization will be completely developed, but not more than 90 days. Forty-four participants will be recruited into the study. To evaluate the safety of propranolol administration, cardiac and respiratory parameters will be continuously monitored. Blood samplings will be performed to check renal, liver and metabolic balance. To evaluate the efficacy of propranolol, the progression of the disease, the number of laser treatments or vitrectomies, the incidence of retinal detachment or blindness, will be evaluated by serial ophthalmologic examinations. Visual function will be evaluated by means of behavioural standardized tests. DISCUSSION: This pilot study is the first research that explores the possible therapeutic role of beta blockers in ROP. The objective of this research is highly ambitious: to find a treatment simple, inexpensive, well tolerated and with few adverse effects, able to counteract one of the major complications of the prematurity. Any favourable results of this research could open new perspectives and original scenarios about the treatment or the prevention of this and other proliferative retinopathies. TRIAL REGISTRATION: Current Controlled Trials ISRCTN18523491; ClinicalTrials.gov Identifier NCT01079715; EudraCT Number 2010-018737-21.


Assuntos
Antagonistas Adrenérgicos beta/uso terapêutico , Propranolol/uso terapêutico , Retinopatia da Prematuridade/tratamento farmacológico , Antagonistas Adrenérgicos beta/administração & dosagem , Antagonistas Adrenérgicos beta/farmacocinética , Relação Dose-Resposta a Droga , Esquema de Medicação , Seguimentos , Idade Gestacional , Humanos , Recém-Nascido , Projetos Piloto , Propranolol/administração & dosagem , Propranolol/farmacocinética , Retinopatia da Prematuridade/sangue , Retinopatia da Prematuridade/diagnóstico , Retinoscopia , Resultado do Tratamento
12.
J Perinat Med ; 38(6): 579-83, 2010 11.
Artigo em Inglês | MEDLINE | ID: mdl-20807009

RESUMO

The birth of neonates at the limits of viability, or periviability, poses numerous challenges to health care providers and to systems of care, and the care of these pregnancies and neonates is fraught with ethical controversies. This statement summarizes the ethical principles involved in the care of periviable pregnancies and neonates, and provides expert clinical opinion about the numerous challenges posed by this problem around the world. Topics addressed include a summary of the published experience, an ethical framework, translating neonatal outcome data to the obstetric arena, management as a trial of intervention, referral to tertiary centers, neonatal resuscitation, cesarean delivery for fetal indication, and limits on life-sustaining neonatal treatment.


Assuntos
Tomada de Decisões/ética , Ética Médica , Viabilidade Fetal , Feminino , Humanos , Recém-Nascido , Recém-Nascido Prematuro , Gravidez
13.
Pediatr Int ; 51(2): 183-7, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19405912

RESUMO

BACKGROUND: Although oxidative stress-related diseases mostly affect neonates with extremely low birthweight, healthy preterm newborns might also be at risk of oxidative damages. The aim of the present study was to verify this possibility. METHODS: Urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG), erythrocyte glutathione peroxidase (GSHPx) and superoxide dismutase (SOD), plasma and erythrocyte concentrations of selenium, zinc and copper were measured until 100 days of life in 30 preterm infants with mean +/- SD birthweight and gestational age of 1605 +/- 122 g and 34.5 +/- 0.5 weeks. The control group included 30 term infants with birthweight 3123 158 g and gestational age 39.6 0.7 weeks. RESULTS: Throughout the study period urinary 8-OHdG, taken as a marker of oxidative stress, was significantly higher in the preterm than in the term group. Up until 20 days of life, GSHPx activity was significantly lower in the preterm than in the term infants but this was not associated with any apparent selenium deficiency. Conversely, up until 100 days, preterm infants had significantly reduced SOD levels that appeared to reflect a shortage of the elements needed for this enzyme's activity, notably copper, the plasma concentrations of which were constantly and significantly below the control values. CONCLUSION: The nutritional status of the elements related to the anti-oxidant enzymes, especially zinc and copper, should be carefully assessed in preterm infants, even if their birthweight is not extremely low.


Assuntos
Desoxiguanosina/análogos & derivados , Recém-Nascido Prematuro/fisiologia , Estresse Oxidativo/fisiologia , 8-Hidroxi-2'-Desoxiguanosina , Peso ao Nascer , Cobre/análise , Desoxiguanosina/urina , Eritrócitos/química , Eritrócitos/enzimologia , Glutationa Peroxidase/urina , Humanos , Recém-Nascido , Estado Nutricional , Selênio/sangue , Superóxido Dismutase/urina , Oligoelementos/análise , Zinco/análise
14.
Front Pediatr ; 7: 180, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31134171

RESUMO

Background: Oral propranolol reduces retinopathy of prematurity (ROP) progression, although not safely. Propranolol 0.1% eye micro-drops administered to newborns with stage 2 ROP are well-tolerated, but not sufficiently effective. Methods: A multi-center open-label trial was conducted to assess the safety and efficacy of propranolol 0.2% eye micro-drops in newborns with stage 1 ROP. The progression of the disease was evaluated with serial ophthalmologic examinations. Hemodynamic, respiratory, biochemical parameters, and propranolol plasma levels were monitored. Demographic and perinatal characteristics, co-morbidities and co-intervention incidences, together with ROP progression, were compared with a historical control group in the same centers participating in the trial. Results: Ninety-eight newborns were enrolled and compared with the historical control group. Populations were not perfectly homogeneous (as demonstrated by the differences in the Apgar score and the different incidence rate in surfactant administration and oxygen exposure). The progression to ROP stage 2 or 3 plus was significantly lower than the incidence expected on the basis of historical data (Risk Ratio 0.521, 95% CI 0.297- 0.916). No adverse effects related to propranolol were observed and the mean propranolol plasma level was significantly lower than the safety cut-off of 20 ng/mL. Unexpectedly, three newborns treated with oral propranolol before the appearance of ROP, showed a ROP that was unresponsive to propranolol eye micro-drops and required laser photocoagulation treatment. Conclusion: Propranolol 0.2% eye micro-drops were well-tolerated and appeared to reduce the ROP progression expected on the basis of a comparison with a historical control group. Propranolol administered too early appears to favor a more aggressive ROP, suggesting that a ß-adrenoreceptor blockade is only useful during the proliferative phase. Further randomized placebo-controlled trials are required to confirm the current results. Clinical Trial Registration  The trial was registered at ClinicalTrials.gov with Identifier NCT02504944 and with EudraCT Number 2014-005472-29.

15.
Free Radic Biol Med ; 45(6): 839-46, 2008 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-18638545

RESUMO

In this study we explored the effects of curcumin in cardiac cells subjected to a protocol simulating ischemia-reperfusion (IR). Curcumin (10 microM) was administered before ischemia (pretreatment) or at the moment of reperfusion (posttreatment) and its effects were compared to those produced by a reference antioxidant (Trolox) with an equal antioxidant capacity. IR cardiac cells showed clear signs of oxidative stress, impaired mitochondrial activity, and a marked development of both necrotic and apoptotic processes; at the same time, increases in NF-kappaB nuclear translocation and JNK phosphorylation were observed. Curcumin pretreatment was revealed to be the most effective in attenuating all these modifications and, in particular, in reducing the death of IR cells. This confirms that the protective effect of curcumin is not related simply to its antioxidant properties but involves other mechanisms, notably interactions in the NF-kappaB and JNK pathways. These findings suggest that curcumin administration, in particular before the hypoxic challenge, represents a promising approach to protecting cardiac cells against IR injury. In this scenario our results point out the importance of the chronology for the outcome of the treatment and provide a differential valuation of the degree of protection that curcumin can exert by its antioxidant activity or by other mechanisms.


Assuntos
Curcumina/farmacologia , MAP Quinase Quinase 4/efeitos dos fármacos , NF-kappa B/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Traumatismo por Reperfusão/prevenção & controle , Animais , Western Blotting , Morte Celular , Linhagem Celular , Núcleo Celular/metabolismo , L-Lactato Desidrogenase/metabolismo , Peroxidação de Lipídeos , MAP Quinase Quinase 4/metabolismo , NF-kappa B/metabolismo , Fosforilação , Transporte Proteico , Ratos , Espécies Reativas de Oxigênio/metabolismo
16.
J Matern Fetal Neonatal Med ; 31(8): 973-980, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28274169

RESUMO

PURPOSE: To investigate the feasibility of a study based on treatment with topiramate (TPM) added to moderate hypothermia in newborns with hypoxic ischemic encephalopathy (HIE). MATERIALS AND METHODS: Multicenter randomized controlled trial. Term newborns with precocious metabolic, clinical and electroencephalographic (EEG) signs of HIE were selected according to their amplified integrated EEG pattern and randomized to receive either TPM (10 mg/kg once a day for the first three days of life) plus moderate hypothermia or hypothermia alone. Safety was assessed by monitoring cardiorespiratory parameters and blood samples collected to check renal, liver, metabolic balance and TPM pharmacokinetics. Efficacy was evaluated by the combined frequency of mortality and severe neurological disability as primary outcome. Incidence of magnetic resonance injury, epilepsy, blindness, hearing loss, neurodevelopment at 18-24 months of life was assessed as secondary outcomes. RESULTS: Forty-four asphyxiated newborns were enrolled in the study. Twenty one newborns (10 with moderate and 11 with severe HIE) were allocated to hypothermia plus TPM and 23 (12 moderate and 11 severe HIE) to hypothermia. No statistically or clinically significant differences were observed for safety, primary or secondary outcomes. However, a reduction in the prevalence of epilepsy was observed in newborns co-treated with TPM. CONCLUSIONS: Results of this pilot trial suggest that administration of TPM in newborns with HIE is safe but does not reduce the combined frequency of mortality and severe neurological disability. The role of TPM co-treatment in preventing subsequent epilepsy deserves further studies.


Assuntos
Frutose/análogos & derivados , Hipotermia Induzida , Hipóxia-Isquemia Encefálica/tratamento farmacológico , Fármacos Neuroprotetores/uso terapêutico , Estudos de Viabilidade , Feminino , Frutose/farmacocinética , Frutose/uso terapêutico , Humanos , Hipóxia-Isquemia Encefálica/diagnóstico por imagem , Recém-Nascido , Imageamento por Ressonância Magnética , Masculino , Neuroimagem , Fármacos Neuroprotetores/farmacocinética , Topiramato , Resultado do Tratamento
17.
J Matern Fetal Neonatal Med ; 19(4): 221-4, 2006 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-16854695

RESUMO

OBJECTIVE: To identify compliance-influencing factors and to suggest strategies for overcoming barriers in a preventive medicine program. METHODS: A survey was conducted to evaluate compliance in children receiving palivizumab prophylaxis for respiratory syncytial virus (RSV) infections. Demographics, neonatal variables, and parental attitudes capable of influencing the outcome of prophylaxis were studied in 216 children over a four-year period. RESULTS: The overall compliance rate with all recommended doses of palivizumab was 87%. Among the neonatal characteristics, low birth weight and a younger age at the beginning of the program were significantly associated with good compliance (p < 0.05). The strongest factor influencing poor compliance was being foreign-born or a non-native speaker (p < 0.01). CONCLUSIONS: Compliance to RSV infection prophylaxis is reduced in infants born to foreign-born or non-native speakers. In order to enhance compliance, parents should be provided with adequate information in their own language explaining the advantages of the palivizumab prophylaxis program for RSV infections.


Assuntos
Anticorpos Monoclonais/administração & dosagem , Antivirais/administração & dosagem , Cooperação do Paciente/estatística & dados numéricos , Infecções por Vírus Respiratório Sincicial/prevenção & controle , Anticorpos Monoclonais Humanizados , Peso ao Nascer , Barreiras de Comunicação , Esquema de Medicação , Humanos , Lactente , Palivizumab , Cooperação do Paciente/psicologia
18.
J Voice ; 30(6): 656-663, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26474712

RESUMO

OBJECTIVES: Scientific and clinical advances in perinatology and neonatology have enhanced the chances of survival of preterm and very low weight neonates. Infant cry analysis is a suitable noninvasive complementary tool to assess the neurologic state of infants particularly important in the case of preterm neonates. This article aims at exploiting differences between full-term and preterm infant cry with robust automatic acoustical analysis and data mining techniques. STUDY DESIGN: Twenty-two acoustical parameters are estimated in more than 3000 cry units from cry recordings of 28 full-term and 10 preterm newborns. METHODS: Feature extraction is performed through the BioVoice dedicated software tool, developed at the Biomedical Engineering Lab, University of Firenze, Italy. Classification and pattern recognition is based on genetic algorithms for the selection of the best attributes. Training is performed comparing four classifiers: Logistic Curve, Multilayer Perceptron, Support Vector Machine, and Random Forest and three different testing options: full training set, 10-fold cross-validation, and 66% split. RESULTS: Results show that the best feature set is made up by 10 parameters capable to assess differences between preterm and full-term newborns with about 87% of accuracy. Best results are obtained with the Random Forest method (receiver operating characteristic area, 0.94). CONCLUSIONS: These 10 cry features might convey important additional information to assist the clinical specialist in the diagnosis and follow-up of possible delays or disorders in the neurologic development due to premature birth in this extremely vulnerable population of patients. The proposed approach is a first step toward an automatic infant cry recognition system for fast and proper identification of risk in preterm babies.


Assuntos
Acústica , Choro , Recém-Nascido Prematuro , Reconhecimento Automatizado de Padrão , Processamento de Sinais Assistido por Computador , Nascimento a Termo , Mineração de Dados , Feminino , Idade Gestacional , Humanos , Comportamento do Lactente , Recém-Nascido , Modelos Logísticos , Masculino , Reprodutibilidade dos Testes , Software , Espectrografia do Som , Máquina de Vetores de Suporte
19.
Ann Ist Super Sanita ; 51(1): 79-82, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25857389

RESUMO

BACKGROUND: In this brief note we present the preliminary findings of a study of 16 women who underwent liver transplants before becoming pregnant and giving birth. The aim of the study was to show the similarities and differences between ways women experience the transplanted organ (liver) and the fetus. METHODS: To explore bodily experiences, a semi-structured ad hoc interview was done on a sample of 16 transplanted women who had completed a pregnancy. The interview was designed to explore the possible similarities between their perception of the transplanted organ (liver) and of the fetus. RESULTS: The main findings that emerge from our study are the following: a) in the post-transplant, pre-pregnancy phase, these women develop a polarized attention on the transplanted organ; b) during pregnancy this attention shifts towards the fetus; c) after childbirth the hyper-attention on the transplanted organ disappears and the subject resumes a normal relationship with her body. CONCLUSIONS: Therefore, pregnancy and childbirth are experiences that can normalize relations between a person who has undergone a transplant and their transplanted organ.


Assuntos
Feto , Transplante de Fígado/psicologia , Percepção , Gestantes/psicologia , Adulto , Atenção , Feminino , Humanos , Recém-Nascido , Mães , Parto , Gravidez
20.
J Matern Fetal Neonatal Med ; 28(2): 158-61, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24670262

RESUMO

UNLABELLED: Narrative medicine allows professionals from all fields of medical sciences to understand the patient's total experience of illness, and meet his/her needs in an empathetic environment. Narrative medicine helps spread holistic knowledge of a multitude of complex clinical conditions, including transplantation. OBJECTIVE: To underline the role of narrative medicine in women who become pregnant after a liver transplant by using their narrations of this very special experience. METHODS: We describe our study with narration and listening to the stories of three women expecting their first child after a liver transplant, by analysing the structure and role of narration in the context of relationships between patients and caregivers. The narrations were transcribed verbatim with the main plot analysed in order to address all the aspects of this rare clinical condition and the transition to parenthood. RESULTS: The women narrated this experience in three phases: transplantation, pregnancy and delivery, and post-partum. They described all phases of pregnancy as stressful but satisfying, whereas the fact of becoming a mother was perceived as a victory both as a woman and as a transplant patient. CONCLUSIONS: Our results suggest that narrative medicine represents a significant professional tool for caring for transplant patients during pregnancy.


Assuntos
Hepatopatias/reabilitação , Transplante de Fígado/reabilitação , Narração , Complicações na Gravidez/prevenção & controle , Transplantados , Adulto , Feminino , Sobrevivência de Enxerto , Humanos , Hospedeiro Imunocomprometido , Hepatopatias/imunologia , Anamnese/métodos , Mães/psicologia , Percepção , Período Pós-Parto/fisiologia , Período Pós-Parto/psicologia , Gravidez , Complicações na Gravidez/imunologia , Transplantados/psicologia
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