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1.
Artículo en Inglés | MEDLINE | ID: mdl-37481716

RESUMEN

OBJECTIVES: Autoantibody-negative rheumatoid arthritis (RA) differs from autoantibody-positive RA in several clinical aspects, possibly underpinned by pathogenetic differences. At present, the role of adaptive immune responses in autoantibody-negative RA remains unclear. Here, we investigated the synovial and serum immunophenotype indicative of B-lymphocyte involvement across the spectrum of autoantibody-positive and -negative chronic arthritides. METHODS: Ultrasound-guided synovial biopsies were retrieved from 131 patients: 43 autoantibody-positive RA, 35 autoantibody-negative RA, 25 polyarticular psoriatic arthritis (PsA), 28 oligoarticular PsA. Samples were analysed for the degree of histological inflammation, B-lymphocyte infiltration and the distribution of different pathotypes (lympho-myeloid, myeloid, pauci-immune). Serum levels of the B-cell chemoattractant CXCL13 were compared among groups. RESULTS: Synovitis scores and CD68+ sublining macrophage infiltration were comparable irrespective of clinical diagnosis and disease subtype. In contrast, the degree of B-lymphocyte infiltration and the frequency of lympho-myeloid synovitis in autoantibody-negative RA were lower than those of autoantibody-positive RA (mean [SD] 1.8 [1] vs 2.4 [0.6], p = 0.03 and 38.2% vs 62.9%, p = 0.07, respectively), and similar to polyarticular PsA. Oligoarticular PsA had the lowest B-cell scores. Serum CXCL13 was associated with lympho-myeloid synovitis and followed a similar gradient, with the highest levels in autoantibody-positive RA, intermediate and comparable levels in autoantibody-negative RA and polyarticular PsA, and low levels in oligoarticular PsA. CONCLUSIONS: The synovial and serum immunophenotype indicative of B-lymphocyte involvement in autoantibody-negative RA differs from autoantibody-positive RA and more closely resembles that observed in polyarticular PsA. The pathobiological stratification of chronic inflammatory arthritides beyond clinical diagnosis may fuel personalised treatment strategies.

2.
Epilepsia ; 61(7): e79-e84, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32562438

RESUMEN

The assay of saliva samples provides a valuable alternative to the use of blood samples for therapeutic drug monitoring (TDM), at least for certain categories of patients. To determine the feasibility of using saliva sampling for the TDM of rufinamide, we compared rufinamide concentrations in paired samples of saliva and plasma collected from 26 patients with epilepsy at steady state. Within-patient relationships between plasma rufinamide concentrations and dose, and the influence of comedication were also investigated. Assay results in the two tested fluids showed a good correlation (r2  = .78, P < .0001), but concentrations in saliva were moderately lower than those in plasma (mean saliva to plasma ratio = 0.7 ± 0.2). In eight patients evaluated at three different dose levels, plasma rufinamide concentrations increased linearly with increasing dose. Patients receiving valproic acid comedication had higher dose-normalized plasma rufinamide levels than patients comedicated with drugs devoid of strong enzyme-inducing or enzyme-inhibiting activity. Overall, these findings indicate that use of saliva represents a feasible option for the application of TDM in patients treated with rufinamide. Because rufinamide concentrations are lower in saliva than in plasma, a correction factor is needed if measurements made in saliva are used as a surrogate for plasma concentrations.


Asunto(s)
Anticonvulsivantes/metabolismo , Monitoreo de Drogas/métodos , Epilepsia/tratamiento farmacológico , Epilepsia/metabolismo , Saliva/metabolismo , Triazoles/metabolismo , Adolescente , Adulto , Anticonvulsivantes/sangre , Anticonvulsivantes/uso terapéutico , Niño , Epilepsia/sangre , Femenino , Humanos , Masculino , Triazoles/sangre , Triazoles/uso terapéutico , Adulto Joven
3.
Mol Biol Rep ; 47(1): 363-368, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31642041

RESUMEN

Neonatal sepsis is a life-threatening condition and its early diagnosis is crucial for infant survival. Identifying responsible pathogens is a key step. Blood culture (BC) is the gold standard, but more rapid and specific diagnostic methods are needed. We evaluated the reliability and utility of 3 h turnaround time diagnostic molecular kit, "EuSepScreen lattanti "CE IVD marked, (EuSepScreen lattanti, Eurospital Spa Trieste, Italy) specifically targeted to detect 4 pathogens in neonatal sepsis: Klebsiella pneumoniae (KP), Escherichia coli (EC), Streptococcus agalactiae (GBS), and Lysteria monocytogenes. We evaluated 69 neonates, 40 full term and 29 preterm infants, with suspected bloodstream infection, who, overall the routine clinical procedures, were tested using the molecular kit. Kit results were compared to BC outcomes. Nineteen cases for early onset sepsis (EOS) were evaluated, 2 of them resulted positive to a molecular kit and to BC (both for GBS and EC). In the 50 cases of suspected late onset sepsis (LOS), 7 infants reported positive and coincident results to both the methods, in 3 further cases the molecular kit identified pathogens (EC) in neonates with negative BC result; in 10 cases BC revealed etiological pathogens exceeding the molecular kit possibility of identification. In case of EOS, results of the molecular kit were coincident to these of BC, but available in 3 h turnaround time, which is an advantage, so the kit may actually be an "add-on tool" for EOS, with reference to EC and GBS, but a larger study with a greater number of EOS cases are needed to validate its usefulness in the NICU. Regarding LOS the restricted panel of identifiable microorganisms failed to provide timely information for sepsis diagnosis, highlighting the need of enlarged number microorganisms for the diagnosis of LOS.Trial registration number: NCT03884894.


Asunto(s)
Bacteriemia/diagnóstico , Sepsis Neonatal/diagnóstico , Bacteriemia/genética , Bacterias , Femenino , Humanos , Lactante , Recién Nacido , Recien Nacido Prematuro , Italia , Masculino , Sepsis Neonatal/genética , Proyectos Piloto , Juego de Reactivos para Diagnóstico/microbiología , Factores de Riesgo , Sepsis
4.
Nutr Metab Cardiovasc Dis ; 30(6): 922-924, 2020 06 09.
Artículo en Inglés | MEDLINE | ID: mdl-32249141

RESUMEN

Leptin is an adipose tissue-derived hormone primarily involved in the regulation of food intake. Leptine has been shown to have a much broader role than just regulating body weight and appetite in response to food intake: among the others, it has been associated with increased ROS production and inflammation, factors involved in the restoration of an effective myocardial reperfusion after myocardial revascularization. Our study, to our best knowledge, is the first showing a direct relationship between leptin serum levels, inflammatory mediators of the ischemia reperfusion damage and effective myocardial reperfusion in patients with ST elevation myocardial infarction undergoing primary percutaneous coronary intervention. Our findings suggest that leptin serum levels are directly associated with the inflammatory response during an acute myocardial infarction and may have a role in risk stratification in this clinical setting.


Asunto(s)
Mediadores de Inflamación/sangre , Leptina/sangre , Infarto del Miocardio con Elevación del ST/sangre , Biomarcadores/sangre , Proteína C-Reactiva/metabolismo , Humanos , Interleucina-6/sangre , Masculino , Intervención Coronaria Percutánea/efectos adversos , Infarto del Miocardio con Elevación del ST/diagnóstico , Infarto del Miocardio con Elevación del ST/terapia , Factores de Tiempo , Resultado del Tratamiento
5.
Proc Natl Acad Sci U S A ; 114(4): E514-E523, 2017 01 24.
Artículo en Inglés | MEDLINE | ID: mdl-28069966

RESUMEN

Most members of the Toll-like receptor (TLR) and interleukin-1 receptor (IL-1R) families transduce signals via a canonical pathway involving the MyD88 adapter and the interleukin-1 receptor-associated kinase (IRAK) complex. This complex contains four molecules, including at least two (IRAK-1 and IRAK-4) active kinases. In mice and humans, deficiencies of IRAK-4 or MyD88 abolish most TLR (except for TLR3 and some TLR4) and IL-1R signaling in both leukocytes and fibroblasts. TLR and IL-1R responses are weak but not abolished in mice lacking IRAK-1, whereas the role of IRAK-1 in humans remains unclear. We describe here a boy with X-linked MECP2 deficiency-related syndrome due to a large de novo Xq28 chromosomal deletion encompassing both MECP2 and IRAK1 Like many boys with MECP2 null mutations, this child died very early, at the age of 7 mo. Unlike most IRAK-4- or MyD88-deficient patients, he did not suffer from invasive bacterial diseases during his short life. The IRAK-1 protein was completely absent from the patient's fibroblasts, which responded very poorly to all TLR2/6 (PAM2CSK4, LTA, FSL-1), TLR1/2 (PAM3CSK4), and TLR4 (LPS, MPLA) agonists tested but had almost unimpaired responses to IL-1ß. By contrast, the patient's peripheral blood mononuclear cells responded normally to all TLR1/2, TLR2/6, TLR4, TLR7, and TLR8 (R848) agonists tested, and to IL-1ß. The death of this child precluded long-term evaluations of the clinical consequences of inherited IRAK-1 deficiency. However, these findings suggest that human IRAK-1 is essential downstream from TLRs but not IL-1Rs in fibroblasts, whereas it plays a redundant role downstream from both TLRs and IL-1Rs in leukocytes.


Asunto(s)
Fibroblastos/metabolismo , Quinasas Asociadas a Receptores de Interleucina-1/deficiencia , Receptores Toll-Like/metabolismo , Deleción Cromosómica , Cromosomas Humanos X/genética , Humanos , Lactante , Quinasas Asociadas a Receptores de Interleucina-1/genética , Leucocitos/metabolismo , Masculino , Proteína 2 de Unión a Metil-CpG/genética , Receptores de Interleucina-1/metabolismo , Transducción de Señal , Receptores Toll-Like/genética
7.
Epilepsia ; 56(7): 1162-73, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-26046371

RESUMEN

OBJECTIVE: To evaluate direct medical costs and their predictors in patients with refractory epilepsy enrolled into the SOPHIE study (Study of Outcomes of PHarmacoresistance In Epilepsy) in Italy. METHODS: Adults and children with refractory epilepsy were enrolled consecutively at 11 tertiary referral centers and followed for 18 months. At entry, all subjects underwent a structured interview and a medical examination, and were asked to keep records of diagnostic examinations, laboratory tests, specialist consultations, treatments, hospital admissions, and day-hospital days during follow-up. Study visits included assessments every 6 months of seizure frequency, health-related quality of life (Quality of Life in Epilepsy Inventory 31), medication-related adverse events (Adverse Event Profile) and mood state (Beck Depression Inventory-II). Cost items were priced by applying Italian tariffs. Cost estimates were adjusted to 2013 values. RESULTS: Of 1,124 enrolled individuals, 1,040 completed follow-up. Average annual cost per patient was € 4,677. The highest cost was for antiepileptic drug (AED) treatment (50%), followed by hospital admissions (29% of overall costs). AED polytherapy, seizure frequency during follow-up, grade III pharmacoresistance, medical and psychiatric comorbidities, and occurrence of status epilepticus during follow-up were identified as significant predictors of higher costs. Age between 6 and 11 years, and genetic (idiopathic) generalized epilepsies were associated with the lowest costs. Costs showed prominent variation across centers, largely due to differences in the clinical characteristics of cohorts enrolled at each center and the prescribing of second-generation AEDs. Individual outliers associated with high costs related to hospital admissions had a major influence on costs in many centers. SIGNIFICANCE: Refractory epilepsy is associated with high costs that affect individuals and society. Costs differ across centers in relation to the characteristics of patients and the extent of use of more expensive, second-generation AEDs. Epilepsy-specific costs cannot be easily differentiated from costs related to comorbidities.


Asunto(s)
Epilepsia/economía , Epilepsia/epidemiología , Costos de la Atención en Salud , Calidad de Vida , Adolescente , Adulto , Estudios de Cohortes , Epilepsia/terapia , Femenino , Estudios de Seguimiento , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Adulto Joven
8.
BMC Pediatr ; 15: 217, 2015 Dec 18.
Artículo en Inglés | MEDLINE | ID: mdl-26678439

RESUMEN

BACKGROUND: The increased number of childbearing women with autoimmune diseases leads to a growing interest in studying relationship among maternal disease, therapy, pregnancy and off-spring. The aim of this study was to determine the impact of autoimmune disease on pregnancy and on neonatal outcome, taking into account the maternal treatment and the transplacental autoantibodies passage. METHODS: We studied 70 infants born to 70 pregnant women with autoimmune disease attended in Fondazione IRCCS Policlinico San Matteo, Pavia, Italy from June 2005 to June 2012. Maternal and neonatal characteristics were collected and relevant clinical, laboratory, therapeutics, sonographic and electrocardiographic investigations were recorded and analyzed. RESULTS: We observed a high rate of spontaneous abortions in medical history, 29 %, and 18.6 % of preterm births and 22.9 % of low birth weight (< 2500 g). Transplacental autoantibodies passage wasn't related to maternal or obstetrical complication, but anti-Ro/SSA positive pregnancies correlated with abnormal fetal heart rate (P = 0.01). Pregnant women on therapy showed an higher incidence of maternal (p = 0.002), obstetric (p = 0.007) complications and an increased rate of intrauterine growth restriction (p = 0.01) than the untreated ones. CONCLUSIONS: Autoimmune diseases in pregnancy require to be carefully monitored to ensure the best possible management of mothers, fetuses and newborns due to the high rate of morbidity specially in case of maternal polytherapy and/or anti-Ro/SSA positivity.


Asunto(s)
Enfermedades Autoinmunes/inmunología , Complicaciones del Embarazo/inmunología , Resultado del Embarazo , Aborto Espontáneo , Adulto , Autoanticuerpos/sangre , Enfermedades Autoinmunes/terapia , Femenino , Retardo del Crecimiento Fetal , Humanos , Recién Nacido de Bajo Peso , Recién Nacido , Recien Nacido Prematuro , Italia , Intercambio Materno-Fetal , Embarazo , Complicaciones del Embarazo/terapia , Estudios Retrospectivos
9.
Int J Food Sci Nutr ; 65(5): 646-8, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24635827

RESUMEN

Forty breastfed full-term infants were randomly, double blind assigned to receive orally Lactobacillus reuteri (L. reuteri) DSM 17938, 5 drops/daily (10(8) colony-forming units), for 4 weeks (n = 20) or an identical placebo (n = 20), starting before third day of life. They underwent basal and final visit to monitor growth parameters and gastrointestinal (GI) disease. Parents registered daily: crying minutes, stool frequency and consistency, numbers of regurgitations, adverse events. Secretory IgA (sIgA) has been measured in saliva on 28th day. Treated infants demonstrated a reduction in daily regurgitations at the end of treatment (p = 0.02), three neonates in the placebo group only needed simethicone for GI pain, sIgA level was similar in both groups. Random casualty produced an unbalanced gender distribution in the groups, but this bias did not affect the results. Therefore, early administration of L. reuteri DSM 17938 resulted beneficial in preventing regurgitation episodes during the first month of life.


Asunto(s)
Lactancia Materna , Reflujo Laringofaríngeo/prevención & control , Limosilactobacillus reuteri , Probióticos/administración & dosificación , Administración Oral , Recuento de Colonia Microbiana , Método Doble Ciego , Femenino , Humanos , Inmunoglobulina A/metabolismo , Recién Nacido , Modelos Lineales , Masculino
10.
Pediatr Crit Care Med ; 14(2): 178-82, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23314180

RESUMEN

OBJECTIVE: CD64 index and triggering receptor expressed on myeloid cells-1 are biomarkers on neutrophil polymorphonuclear cells with crucial role in sepsis. The study aim is to assess diagnostic performance, individually and combined, of CD64 index and triggering receptor expressed on myeloid cells-1 (surface marker/soluble form), in late-onset sepsis of preterm infants. DESIGN: Observational study. SETTING: Neonatal ICU. PATIENTS: Sixteen septic and 16 control preterm infants, gestational age younger than 32 weeks and/or birth weigh less than 1500 g. MEASUREMENT AND MAIN RESULTS: Seventy preterm infants, free of sepsis were enrolled into the study. CD64 index and triggering receptor expressed on myeloid cells-1 were measured once between day 5 and 15 of life (T0) and once between day 16 and 25 (T1). At T1, 16 infants were assigned to septic group because of reported signs of sepsis and positive blood culture. From the remaining 54 infants, 16 of them who always remained free of sepsis had a blood sample at T1 and constituted the control group (n = 16). Comparing T1 vs T0, triggering receptor expressed on myeloid cells-1 polymorphonuclear cells percentage was significantly lower (p = 0.002) in septic group but not in control group; soluble triggering receptor expressed on myeloid cells-1 concentration did not show significant differences in both groups; CD64 index significantly increased (p = 0.0004) in septic group, while no difference was found in control group. Comparing septic with control group at T0, no differences were found in any markers. At T1, triggering receptor expressed on myeloid cells-1 polymorphonuclear cells percentage was significantly lower (p = 0.003) and CD64 index was higher (p = 0.00019) in septic infants. Triggering receptor expressed on myeloid cells-1 polymorphonuclear cells receiver operating characteristic curve indicated cutoff 62.12%, sensitivity 56.2%, specificity 93.5%, and area under the curve 0.8. CD64 index receiver operating characteristic curve indicated cutoff 2.85, sensitivity 87.5%, specificity 100%, and area under the curve 0.95. Combination of the two indexes was not useful in increasing individual diagnostic power. CONCLUSIONS: Despite limited sample size, CD64 index demonstrated to be a promising biomarker, with high specificity, to diagnose late-onset sepsis. Further investigations are needed to substantiate these findings. Triggering receptor expressed on myeloid cells-1 showed less valuable diagnostic role.


Asunto(s)
Glicoproteínas de Membrana/sangre , Receptores de IgG/sangre , Receptores Inmunológicos/sangre , Sepsis/sangre , Sepsis/diagnóstico , Área Bajo la Curva , Biomarcadores/sangre , Estudios de Casos y Controles , Femenino , Humanos , Recién Nacido , Masculino , Glicoproteínas de Membrana/metabolismo , Neutrófilos/metabolismo , Nacimiento Prematuro , Curva ROC , Receptores Inmunológicos/metabolismo , Estadísticas no Paramétricas , Factores de Tiempo , Receptor Activador Expresado en Células Mieloides 1
11.
Front Med (Lausanne) ; 9: 852220, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35372374

RESUMEN

Identification of a pathological change in the course of systemic chronic immune-inflammatory diseases is key to delivering effective treatment strategies. In this context, one of the most compelling issues is the concept of flare. The multifaceted expression of disease activity in rheumatoid arthritis (RA) makes it challenging to provide an omni-comprehensive definition of flare, encompassing the pathology's different objective and subjective domains. Our incomplete understanding of the pathophysiological mechanisms underlying this process contributes to the partial comprehension of its potential clinical expression. This review focuses on the proposed pathophysiological processes underlying disease recrudescence in RA and the variable definitions adopted to capture flare in clinical practice through its objective, subjective, and temporal domains. Overall, what emerges is a complex landscape far from being unraveled.

12.
Nutrients ; 14(7)2022 Mar 30.
Artículo en Inglés | MEDLINE | ID: mdl-35406063

RESUMEN

Background: Leptin is a hormone regulating lifetime energy homeostasis and metabolism and its concentration is important starting from prenatal life. We aimed to investigate the association of perinatal leptin concentrations with growth trajectories during the first year of life. Methods: Prospective, longitudinal study, measuring leptin concentration in maternal plasma before delivery, cord blood (CB), and mature breast milk and correlating their impact on neonate's bodyweight from birth to 1 year of age, in 16 full-term (FT), 16 preterm (PT), and 13 intrauterine growth-restricted (IUGR) neonates. Results: Maternal leptin concentrations were highest in the PT group, followed by IUGR and FT, with no statistical differences among groups (p = 0.213). CB leptin concentrations were significantly higher in FT compared with PT and IUGR neonates (PT vs. FT; IUGR vs. FT: p < 0.001). Maternal milk leptin concentrations were low, with no difference among groups. Maternal leptin and milk concentrations were negatively associated with all the neonates' weight changes (p = 0.017 and p = 0.006), while the association with CB leptin was not significant (p = 0.051). Considering each subgroup individually, statistical analysis confirmed the previous results in PT and IUGR infants, with the highest value in the PT subgroup. In addition, this group's results negatively correlated with CB leptin (p = 0.026) and showed the largest % weight increase. Conclusions: Leptin might play a role in neonatal growth trajectories, characterized by an inverse correlation with maternal plasma and milk. PT infants showed the highest correlation with hormone levels, regardless of source, seeming the most affected group by leptin guidance. Low leptin levels appeared to contribute to critical neonates' ability to recover a correct body weight at 1 year. An eventual non-physiological "catch-up growth" should be monitored, and leptin perinatal levels may be an indicative tool. Further investigations are needed to strengthen the results.


Asunto(s)
Trayectoria del Peso Corporal , Leptina , Peso al Nacer , Femenino , Retardo del Crecimiento Fetal , Humanos , Lactante , Recién Nacido , Estudios Longitudinales , Embarazo , Estudios Prospectivos
13.
J Matern Fetal Neonatal Med ; 35(19): 3729-3735, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33161792

RESUMEN

OBJECTIVE: To evaluate the dynamical interplay between perinatal leptin concentrations and neonatal weight evolution until 3 months of age. METHODS: In a prospective observational study, maternal, cord blood and neonatal plasma leptin concentrations were correlated to birthweight and 3-month weight in 26 full-term, 20 preterm, and 17 intrauterine growth restriction (IUGR) mother-neonate couples. RESULTS: The median of maternal, cord blood, neonatal leptin concentrations were significantly different among the three groups (p = 0.010; <0.001; =0.041 correspondingly). In the respect of the full-term group, higher concentrations were reported in preterm and IUGR mothers and lower concentrations in cord blood and neonatal plasma. The post-hoc comparisons showed that maternal concentrations were significantly higher in the IUGR group (p = 0.005 vs full-term), cord blood concentrations resulted always significantly lower (preterm, IUGR vs full-term p < 0.001) and neonatal concentrations were significantly lower in the preterm group (p = 0.018 vs full-term). Neonatal birthweight and 3-month weight were always significantly different among groups (p < 0.001), even if preterm and IUGR still had lower weight than full-term, the percent increasing of weight between birth and 3-month demonstrated that preterm and IUGR infants have grown significantly faster, (preterm, IUGR vs full-term p < 0.001). The univariable analysis showed a maternal leptin association with offspring' birthweight (R = -38%, p = 0.006) and with 3-month weight (R = -43%, p = 0.002). Accounting for confounders, these associations lost significance. Cord blood leptin concentrations positively correlated with birthweight and with 3-month weight (both, p < 0.001). The latter correlation, when adjusting for birthweight became negative (R = -43% p < 0.001). CONCLUSION: Our results showed that maternal leptin levels lost their influence on neonatal weight when considering confounders. At 3-month, once birthweight adjusted, the percent increasing of weight was statistically larger in preterm and IUGR than the full-term group and the correlation between cord blood leptin and weight turned negative, from positive at birth. These data may be a clue for further investigation on the relationship between perinatal leptin concentrations and catch-up growth.


Asunto(s)
Retardo del Crecimiento Fetal , Leptina , Peso al Nacer , Femenino , Edad Gestacional , Humanos , Lactante , Recién Nacido , Madres , Embarazo
14.
Anal Bioanal Chem ; 401(3): 1013-21, 2011 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-21643856

RESUMEN

The development of a simple and rapid high-performance liquid chromatography (HPLC) method for the determination of the new antiepileptic drug rufinamide (RFN) in human plasma and saliva is reported. Samples (250 µl) are alkalinized with ammonium hydroxide (pH 9.25) and extracted with dichloromethane using metoclopramide as internal standard. Separation is achieved with a Spherisorb silica column (250 × 4.6 mm i.d., 5 µm) at 30 °C using as mobile phase a solution of methanol/dichloromethane/n-hexane 10/25/65 (vol/vol/vol) mixed with 6 ml ammonium hydroxide. The instrument used was a Shimadzu LC-10Av chromatograph and flow rate was 1.5 ml min(-1), with a LaChrom L-7400 UV detector set at 230 nm. Calibration curves are linear [r(2) = 0.998 ± 0.002 for plasma (n = 10) and r(2) = 0.999 ± 0.001 for saliva (n = 9)] over the range of 0.25-20.0 µg ml(-1), with a limit of quantification at 0.25 µg ml(-1). Precision and accuracy are within current acceptability standards. The assay is suitable for pharmacokinetic studies in humans and for therapeutic drug monitoring.


Asunto(s)
Anticonvulsivantes , Cromatografía Líquida de Alta Presión , Saliva/química , Espectrofotometría Ultravioleta , Triazoles , Anticonvulsivantes/análisis , Anticonvulsivantes/sangre , Estabilidad de Medicamentos , Humanos , Estructura Molecular , Reproducibilidad de los Resultados , Factores de Tiempo , Triazoles/análisis , Triazoles/sangre
15.
Ital J Pediatr ; 46(1): 77, 2020 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-32493448

RESUMEN

Vitamin A administration may decrease any stage of retinopathy of prematurity (ROP) in preterm infants. To evaluate whether vitamin A oral supplementation could be preventive in ROP incidence and severity in VLBW infants, we compared results from 31 preterm infants, (< 1500 g or < 32 weeks) who, during a previous investigation, prospectively received 3000 UI/kg/die oral retinol palmitate drops, for 28 days, with 31 matching preterm newborns hospitalized in our NICU the same period, as control group. Although ROP incidence was similar, in the supplemented group, we had 9 cases of ROP grade 1, no ROP grade ≥ 2, in the un-supplemented group, 4 cases of ROP grade 1 and 6 ROP grade ≥ 2 (p = 0.018). The percentage of babies requiring treatment for ROP was 0 in treated and 16.6 in the un-treated group (p = 0.020). Moreover, Vitamin A administration showed a protective effect with an 88% risk reduction of developing severe ROP. Since vitamin A parenteral/IM administration presents some awareness, the results of this investigation may be important to plan further trials to confirm the usefulness of oral administration in mitigating the ROP severity of VLBW infants.ClinicalTrials.gov NCT02102711; may 03/06/2014.


Asunto(s)
Suplementos Dietéticos , Retinopatía de la Prematuridad/epidemiología , Retinopatía de la Prematuridad/prevención & control , Vitamina A/administración & dosificación , Vitaminas/administración & dosificación , Administración Oral , Estudios de Casos y Controles , Femenino , Humanos , Incidencia , Recién Nacido , Recien Nacido Prematuro , Recién Nacido de muy Bajo Peso , Masculino
16.
Int J Immunopathol Pharmacol ; 32: 2058738418820484, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30897987

RESUMEN

Retinol palmitate oral administration is convenient, but it is difficult to assess/monitor its nutritional status in preterm infants and literature is controversial about the administration route and the effectiveness of vitamin A supplementation. We primarily evaluated retinol plasma levels to assess the vitamin A nutritional status in preterm infants (<1500 g; 32 weeks) after 28 days of oral supplementation (3000 IU/kg/day, retinol palmitate drops), in addition to vitamin A standard amount as suggested by European Society of Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) guidelines. We then observed the rate of typical preterm pathologies in the supplemented group (31 newborns) and in 10 matching preterm infants, hospitalized in neonatal intensive care unit (NICU) in the same period, who received neither vitamin A supplementation nor parents allowed plasma sampling. Oral integration resulted in constant retinol plasma concentration around the desired level of 200 ng/mL, but without statistical increase during the study period. Due to the complexity of vitamin A metabolism and the immaturity of preterm infant's organs, retinol supplementation may had first saturated other needy tissues; therefore, plasmatic measures may not be consistent with improved global vitamin A body distribution. Therefore, achieving a constant retinol concentration is a valuable result and supportive for oral administration: decreasing levels, even after parenteral/enteral supplementation, were reported in the literature. In spite of favourable trend and no adverse events, we did not report statistical difference in co-morbidities. This investigation confirms the necessity to perform further trials in preterm newborns, to find an index reflecting the complex nutritional retinol status after oral administration of vitamin A, highlighting its effectiveness/tolerability in correlated preterm infant's pathologies.


Asunto(s)
Recién Nacido de Bajo Peso/sangre , Recien Nacido Prematuro/sangre , Vitamina A/sangre , Administración Oral , Suplementos Dietéticos , Femenino , Humanos , Recién Nacido , Masculino , Estado Nutricional/fisiología
17.
Artículo en Inglés | MEDLINE | ID: mdl-17481975

RESUMEN

A rapid and simple high-performance liquid chromatographic method for the determination of the R-(-)- and S-(+)-enantiomers of the antiepileptic drug vigabatrin in human plasma is described. After adding the internal standard (1-aminomethyl-cycloheptyl-acetic acid), plasma samples (200 microL) are deproteinized with acetonitrile and the supernatant is derivatized with 2,4,6 trinitrobenzene sulfonic acid (TNBSA). Separation is achieved on a reversed-phase cellulose-based chiral column (Chiralcel-ODR, 250 mm x 4.6 mm i.d.) using 0.05 M potassium hexafluorophosphate (pH 4.5)/acetonitrile/ethanol (50:40:10 vol/vol/vol) as mobile phase at a flow-rate of 0.9 mL/min. Chromatographic selectivity is improved by concentrating the derivatives on High Performance Extraction Disk Cartridges prior to injection. Detection is at 340 nm. Calibration curves are linear (r(2)> or =0.999) over the range of 0.5-40 microg/mL for each enantiomer, with a limit of quantification of 0.5 microg/mL for both analytes. The assay is suitable for therapeutic drug monitoring and for single-dose pharmacokinetic studies in man.


Asunto(s)
Cromatografía Líquida de Alta Presión/métodos , Espectrofotometría Ultravioleta/métodos , Vigabatrin/sangre , Calibración , Humanos , Estándares de Referencia , Sensibilidad y Especificidad , Estereoisomerismo
18.
J Autism Dev Disord ; 47(5): 1490-1495, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28258350

RESUMEN

The aim of this retrospective study, with prospective data collection, was to correlate congenital cytomegalovirus (CMV) infection with autism spectrum disorder (ASD) and to define its prevalence. Seventy proven congenitally-infected infants, born between 2007 and 2012, were referred to our centre for CMV diagnosis and follow-up, which consisted of a consolidated protocol allowing an early evaluation of autism. We considered four children 2-year old, two of whom, at the age of 3, were diagnosed with ASD demonstrating a 2-3 fold higher prevalence (2.86%), than that in general Italian population (0.66-1.36%).Our protocol enabled us to make the earliest diagnosis and highlight the role of the virus among other causes of autism, which may be a long term sequela of congenital CMV.


Asunto(s)
Trastorno del Espectro Autista/virología , Infecciones por Citomegalovirus/complicaciones , Trastorno del Espectro Autista/epidemiología , Preescolar , Infecciones por Citomegalovirus/congénito , Infecciones por Citomegalovirus/psicología , Femenino , Humanos , Lactante , Recién Nacido , Italia/epidemiología , Masculino , Prevalencia , Estudios Prospectivos , Estudios Retrospectivos
20.
Clin Nutr ; 36(1): 238-245, 2017 02.
Artículo en Inglés | MEDLINE | ID: mdl-26718667

RESUMEN

BACKGROUND & AIMS: Safety and growth adequacy of infant formulae enriched by functional ingredients need stringent evaluation by means of randomized controlled trials (RCTs), therefore we performed a double-blind RCT to evaluate an infant formula enriched with galacto-oligosaccharides, beta-palmitate, and acidified milk vs. a standard infant formula. METHODS: Weight, length, head circumference and fecal bacteria (Bifidobacteria, BIF/Clostridia, CLO) were measured in healthy full term infants, at baseline - as before 21 days of life - at 60 and 135 days thereafter. A group of 51 neonates received the enriched formula (ENR), 59 the standard one (ST). Parents were trained to daily register gastrointestinal diseases. RESULTS: All the infants grew homogeneously increasing the anthropometric parameters and complying with WHO and Italian standards: the mean (SD) difference in daily weight between ENR and ST groups was -0.74 (1.13) g/day, corresponding to a 90% CI of -2.62 to 1.13 g/day, well within the postulated interval of equivalence of -3.9 to +3.9 g/day. A statistical improvement in BIF concentration in the microbiota of infants fed by ENR was recorded. There was no between-group change in log10CLO, but log10BIF increase was higher at T2 vs. T0 in ENR (treatment × time interaction = 0.71, 95% CI 0.08-1.34, p = 0.028) than in ST neonates. This corresponds to estimated mean (95% CI) values of 8.37 (8.04-8.69) log10-units for ENR vs. 8.08 (7.77-8.39) log10-units for ST neonates. Gastrointestinal effects were mild and similar, with no statistical difference between two groups. CONCLUSION: Safety and growth ability of the enriched formula has been confirmed. A positive effect on neonatal gut microbiota, consisting of increased fecal BIF counts at T2 vs. baseline has been shown too. Nonetheless, larger RCTs are needed to estimate with greater precision the effective potential attributable to the enriched formula on neonatal microbiota, with particular reference to the mode of delivery.


Asunto(s)
Inocuidad de los Alimentos , Alimentos Funcionales/análisis , Microbioma Gastrointestinal , Tracto Gastrointestinal/microbiología , Fórmulas Infantiles/química , Bifidobacterium , Clostridium , Carbohidratos de la Dieta/administración & dosificación , Grasas de la Dieta/administración & dosificación , Fibras de la Dieta/administración & dosificación , Proteínas en la Dieta/administración & dosificación , Método Doble Ciego , Humanos , Lactante , Fórmulas Infantiles/microbiología , Micronutrientes/administración & dosificación , Resultado del Tratamiento
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