ABSTRACT
RESUMEN Introducción: El TDAH tiene una prevalencia del 1-4% de la población escolar española. Su tratamiento se realiza con derivados anfetamínicos y, recientemente, con fármacos no esti mulantes; los estudios realizados no han encontrado diferencias de eficacia. Caso clínico: Niña de 7 arios llegó derivada desde neurología por retraso en el aprendizaje y trastornos de conducta. Orientada como TDAH, se inició tratamiento con metilfenidato de liberación inmediata y posteriormente con la fórmula OROS; apareció alopecia areata y se retiró el tratamiento. Tras la reintroducción de metilfenidato de liberación modificada 30:70, se consiguió controlar los síntomas sin que apareciera alopecia. Discusión: Hay antecedentes publicados de 2 casos de alopecia areata con metilfenidato OROS, que se resolvieron tras el aumento de dosis del fármaco, aunque no se conoce clara mente el motivo de este suceso. No hay consenso sobre el uso prioritario de la fórmula de liberación inmediata o la fórmula OROS del metilfenidato.
ABSTRACT Introduction: Attention deficit hyperactivity disorder has a prevalence of 1-4% of the Spanish school population. Its treatment consists of giving amphetamine derivatives and, recently, non-stimulant drugs, without finding any differences in efficacy in the studies performed. Clinical case: A 7-year-old girl was referred from neurology due to learning delay and behaviour disorders. Diagnosed as likely ADHD, treatment was started with immediate release methylphenidate, and later with an osmotic release oral system (OROS) methylphenidate. When alopecia areata appeared, this treatment was withdrawn. After the re-introduction of modified release methylphenidate 30:70, symptom control was achieved without the appearance of alopecia. Discussion: There is a published history of two cases of alopecia areata with OROS methylp henidate that resolved after increasing the dose of the drug without clearly knowing the reason for this event. There is no consensus on the priority use of the immediate release formula or the OROS methylphenidate.
Subject(s)
Humans , Female , Child , Alopecia , Methylphenidate , Attention Deficit Disorder with Hyperactivity , Pharmaceutical Preparations , Alopecia Areata , DosageABSTRACT
OBJECTIVES: The objective of this study was to evaluate the treatment duration and adherence of osmotic-controlled release oral delivery system (OROS) methylphenidate for treatment of attention-deficit hyperactivity disorder (ADHD). METHODS: A total of 843 children with ADHD were recruited : 213 children (25.3%) who had previously taken medications for ADHD and 630 drug-naive children (74.7%) were recruited. The dosage was adjusted according to the clinician's judgment. The primary efficacy endpoint of this study was treatment retention rate, which was estimated at Week 12 and Week 20 using the Kaplan-Meier curve. The Swanson, Nolan and Pelham-IV (SNAP-IV), Clinical Global Impression-Severity (CGI-S), Clinical Global Impression-Improvement, and the side effect rating scale were measured at every visit. Remission rates were presented based on SNAP-IV and CGI-S, respectively. RESULTS: The treatment retention rate at 12 weeks and at 20 weeks was 76.2% and 66.8%, respectively. Divided according to 6-8, 9-11, 12-14 and 15-18 years of age, younger children tended to show a statistically higher treatment retention rate (p=.02). Based on SNAP-IV and CGI scores, children with better response to medication showed tendencies of statistically higher treatment retention rate. The most common adverse events included loss of appetite (7.1%) and insomnia (3.3%). There was no serious adverse event related to the treatment, such as death. CONCLUSION: The use of OROS methylphenidate for treatment of ADHD was safe and tolerable for children. In this study, lower age and better treatment response showed a statistically significant relationship with higher treatment adherence. Boys showed a trend of high treatment adherence. The treatment adherence at 20 weeks was satisfactory, however, the treatment adherence after 20 weeks showed a sharp decrease. Therefore, treatment persistence for six months after the beginning of ADHD treatment is important. In addition, the positive role of psycho-education for children and parents is necessary for increasing treatment adherence.
Subject(s)
Adolescent , Child , Humans , Appetite , Judgment , Methylphenidate , Parents , Sleep Initiation and Maintenance DisordersABSTRACT
OBJECTIVES: The aim of our study was to investigate association of norepinephrine transporter gene (SLC6A2) polymorphism and side effects of osmotic-release oral system methylphenidate (OROS MPH) in children with attention-deficit hyperactivity disorder (ADHD). METHODS: We recruited drug naive children with ADHD (N=97). We administered OROS MPH by tolerable dosage. At week 8 of treatment, parents completed the Barkley's side effect rating scale. We analyzed two SLC6A2 single nucleotide polymorphisms (SNPs), rs192303 and rs3785143, with blood of subjects. We compared the frequency and severity of each side effect among SLC6A2 genotypes of 2 SNPs. RESULTS: In the analysis of frequency of each side effect, irritability differed according to rs192303 and rs3785143 genotype. In comparisons of severity, talking less and disinterest differed according to rs192303 genotype. In the case of rs3785143, severities of disinterest and irritability were involved with genotype. CONCLUSION: Side effects of OROS MPH showed an association with SLC6A2 genotype.
Subject(s)
Child , Humans , Genotype , Methylphenidate , Norepinephrine Plasma Membrane Transport Proteins , Parents , Polymorphism, Single NucleotideABSTRACT
Attention-deficit/hyperactivity disorder (ADHD) is one of the common psychiatric problems in childhood. The symptoms of ADHD tend to last for adulthood and the patients suffer from various comorbid problems and functional impairments. Methylphenidate (MPH) is the first choice of pharmacotherapy for ADHD and many researches have demonstrated its efficacy. We reviewed the clinical trials for efficacy of MPH focusing on Osmotic-Controlled Release Oral delivery System Methylphenidate (OROS MPH). It was identified that MPH improved core symptom of ADHD, peer relationship and health related quality of life and might improve various aspects of cognitive function. It was proved that the efficacy of OROS MPH was better than placebo and comparable to immediate release MPH (IR MPH) dosed three times daily in various studies. Especially, parent's preference of OROS MPH was better than IR MPH. The efficacy of MPH for academic achievement was equivocal. Long-term efficacy of OROS MPH was also inconclusive and further study is necessary.
Subject(s)
Humans , Achievement , Methylphenidate , Phenazines , Quality of LifeABSTRACT
We review the effect of methylphenidate, focusing on Osmotic-controlled Release Oral delivery System (OROS) methylphenidate, on cardiovascular system, appetite and growth, sleep, tic, epilepsy, psychiatric and rare adverse events. Although OROS methylphenidate has side effects including increased heart rate or blood pressure, decreased appetite, delayed sleep onset, emergence or aggravation of tics, withdrawal or changes in mood, these effects appeared to be minimal in impact or difficult to distinguish from risk to untreated population and tended to be improved by dose adjustment or drug discontinuation. However, in subjects with underlying cardiac problems, uncontrolled epilepsy, previous psychotic episode, clinicians should pay attention and balance the risk and benefit.
Subject(s)
Appetite , Blood Pressure , Cardiovascular System , Epilepsy , Heart Rate , Methylphenidate , TicsABSTRACT
Attention-deficit/hyperactivity disorder (ADHD) is one of the common psychiatric problems in childhood. The symptoms of ADHD tend to last for adulthood and the patients suffer from various comorbid problems and functional impairments. Methylphenidate (MPH) is the first choice of pharmacotherapy for ADHD and many researches have demonstrated its efficacy. We reviewed the clinical trials for efficacy of MPH focusing on Osmotic-Controlled Release Oral delivery System Methylphenidate (OROS MPH). It was identified that MPH improved core symptom of ADHD, peer relationship and health related quality of life and might improve various aspects of cognitive function. It was proved that the efficacy of OROS MPH was better than placebo and comparable to immediate release MPH (IR MPH) dosed three times daily in various studies. Especially, parent's preference of OROS MPH was better than IR MPH. The efficacy of MPH for academic achievement was equivocal. Long-term efficacy of OROS MPH was also inconclusive and further study is necessary.
Subject(s)
Humans , Achievement , Methylphenidate , Phenazines , Quality of LifeABSTRACT
We review the effect of methylphenidate, focusing on Osmotic-controlled Release Oral delivery System (OROS) methylphenidate, on cardiovascular system, appetite and growth, sleep, tic, epilepsy, psychiatric and rare adverse events. Although OROS methylphenidate has side effects including increased heart rate or blood pressure, decreased appetite, delayed sleep onset, emergence or aggravation of tics, withdrawal or changes in mood, these effects appeared to be minimal in impact or difficult to distinguish from risk to untreated population and tended to be improved by dose adjustment or drug discontinuation. However, in subjects with underlying cardiac problems, uncontrolled epilepsy, previous psychotic episode, clinicians should pay attention and balance the risk and benefit.
Subject(s)
Appetite , Blood Pressure , Cardiovascular System , Epilepsy , Heart Rate , Methylphenidate , TicsABSTRACT
OBJECTIVES: The purpose of this study was to evaluate the efficacy and tolerability of osmotic release oral systemmethylphenidate (OROS-MPH) in children with attention-deficit hyperactivity disorder (ADHD) and comorbid psychiatric disorders. METHODS: This was an 8-week open label study of OROS-MPH monotherapy. The subjects were 113 children with ADHD aged 6-12 years. Outcome measures were the Korean version of the parent ADHD Rating Scale (K-ARS), Korean version of the Conners Parent Rating Scale (K-CPRS), Clinical Global Impression-Severity and Clinical Global Impression-Improvement. Side effects were monitored using Barkley's Side Effect Rating Scale. We compared the change-over-time in the mean scores of the outcome measure according to the comorbidity of disruptive behavior disorder, depressive disorder, anxiety disorder, and tic disorder. RESULTS: The mean K-ARS and K-CPRS scores were significantly decreased, regardless of the comorbidity. The mean doses of OROS-MPH and dropout rate did not differ significantly according to comorbidity. The OROS-MPH was well tolerated, regardless of the comorbidity. However, children with tic disorder reported a higher frequency of tics or nervous movements between the 2nd and 8th week than those without tic disorder. CONCLUSION: The OROS-MPH is effective for decreasing the symptoms of ADHD, and it is well tolerated, even by patients with comorbid psychiatric disorders.
Subject(s)
Aged , Child , Humans , Anxiety Disorders , Attention Deficit and Disruptive Behavior Disorders , Comorbidity , Depressive Disorder , Outcome Assessment, Health Care , Parents , Patient Dropouts , Tic Disorders , TicsABSTRACT
The incidence of the Attention Deficit Hyperactivity Disorder secondary to the traumatic brain injury, such as traffic accidents, is increasing; the variety of the treatment modality is also increasing. This case was studied to see if OROS Methylphenidate(Concerta), which is one of the most commonly used medication in Attention Deficit Hyperactivity Disorder patients, not only improves the patient's attention, but also their impulsivity, hyperactivity and aggression. According to the case result, the medication showed an improvement of the impulsivity, aggression, and attention in the secondary Attention Deficit Hyperactivity Disorder patients after the traumatic brain injury.