Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 38
Filtrar
Más filtros

Banco de datos
Tipo del documento
Intervalo de año de publicación
1.
Compr Psychiatry ; 97: 152157, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31935529

RESUMEN

BACKGROUND: Patients in early phases of psychosis often struggle with depressive symptoms and low self-esteem. The main aims of the present study were to examine whether cognitive behavior therapy (CBT) compared to treatment as usual (TAU) would reduce depressive symptoms (primary outcome) and increase self-esteem (secondary outcome). Furthermore, we wanted to examine whether CBT reduces symptoms measured with the PANSS (positive, negative, cognitive, or excited symptoms) or increases general functioning compared to TAU. METHODS: A total of 63 early psychosis patients were included and randomly assigned to receive either CBT (maximum 26 sessions) or TAU for a period of up to six months. A linear mixed model was used for longitudinal analysis, with a focus on whether patients in the CBT group or the TAU group changed differently to one another between the baseline and 15-month follow-up. RESULTS: There were no differences between the CBT group and TAU group regarding improvements in depressive symptoms measured with the Calgary Depression Scale for Schizophrenia (P = 0.188) or self-esteem measured with the Rosenberg Self-Esteem Scale (P = 0.580). However, patients in the CBT group improved significantly more on negative symptoms (P = 0.002) and social functioning (P = 0.001). CONCLUSIONS: We did not find CBT to be more effective than TAU in reducing depressive symptoms or increasing self-esteem in patients with early psychosis. However, CBT seems to improve negative symptoms and functioning. These results still need to be replicated in further studies as the present one was merely an exploratory analysis. ClinicalTrials.gov Identifier: NCT01511406.


Asunto(s)
Terapia Cognitivo-Conductual/métodos , Depresión/terapia , Trastornos Psicóticos/terapia , Esquizofrenia/terapia , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Psicoterapia de Grupo , Trastornos Psicóticos/psicología , Autoimagen , Resultado del Tratamiento
2.
Diabetes Obes Metab ; 20(4): 998-1005, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29205786

RESUMEN

AIMS: To investigate whether the pharmacokinetic characteristics of semaglutide were altered in people with hepatic impairment, assessed using Child-Pugh criteria, vs those with normal hepatic function. METHODS: In this multicentre, open-label, parallel-group trial (sponsor Novo Nordisk, ClinicalTrials.gov ID NCT02210871), four groups of participants with normal hepatic function (n = 19) or mild (n = 8), moderate (n = 10) or severe (n = 7) hepatic impairment received a single, subcutaneous dose of 0.5 mg semaglutide. Semaglutide plasma concentrations were assessed frequently for 35 days after dosing. The primary endpoint was area under the semaglutide plasma concentration-time curve from time zero to infinity (AUC0-∞ ). No effect of hepatic impairment was declared if the 90% confidence interval (CI) for the between-group ratio (hepatic impairment/normal function) was within the interval 0.70 to 1.43. RESULTS: Semaglutide exposure was similar across all groups, with AUC0-∞ treatment ratios for mild impairment/normal function of 0.95 (90% CI 0.77, 1.16), moderate impairment/normal function 1.02 (90% CI 0.93, 1.12), and severe impairment/normal function 0.97 (90% CI 0.84, 1.12). The maximum plasma semaglutide concentration (Cmax ) did not appear to be influenced by hepatic function, with mild impairment/normal function treatment ratios of 0.99 (90% CI 0.80, 1.23), moderate impairment/normal function 1.02 (90% CI 0.88, 1.18) and severe impairment/normal function 1.15 (90% CI 0.89, 1.48; sensitivity analysis excluding one extreme semaglutide concentration: 1.05 [90% CI 0.88, 1.25]). In all, 10 participants reported 12 mild or moderate non-serious adverse events. No unexpected safety or tolerability issues were observed. CONCLUSIONS: Semaglutide exposure did not appear to be affected by hepatic impairment, suggesting that dose adjustment may not be necessary in patients with hepatic impairment. Semaglutide was well tolerated and there were no unexpected safety issues.


Asunto(s)
Complicaciones de la Diabetes/tratamiento farmacológico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Péptidos Similares al Glucagón/efectos adversos , Péptidos Similares al Glucagón/farmacocinética , Hepatopatías/tratamiento farmacológico , Adulto , Anciano , Complicaciones de la Diabetes/metabolismo , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/metabolismo , Femenino , Péptidos Similares al Glucagón/administración & dosificación , Humanos , Hígado/efectos de los fármacos , Hígado/fisiopatología , Hepatopatías/complicaciones , Hepatopatías/metabolismo , Masculino , Persona de Mediana Edad
3.
Diabetes Obes Metab ; 20(11): 2565-2573, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-29893488

RESUMEN

AIMS: To investigate the effects of semaglutide vs placebo on glucagon and other counterregulatory hormones during hypoglycaemia in type 2 diabetes (T2D). METHODS: In this double-blind, placebo-controlled, single-centre trial, we randomized 38 men and women (treated only with metformin) 1:1 to 2 12-week crossover periods of once-weekly subcutaneous semaglutide or placebo, each followed by a hypoglycaemic clamp procedure. The primary endpoint was change in glucagon concentration from target plasma glucose (PG) level 5.5 mmol/L to nadir (target 2.5 mmol/L). RESULTS: The mean (range) participant age was 54.2 (41-64) years, body mass index 29.4 (23.3-36.1) kg/m2 , glycated haemoglobin 60.8 (44.3-83.6) mmol/mol (7.7 [6.2-9.8]%), and diabetes duration 4.5 (0.3-13.2) years. A total of 35 participants completed the trial and were included in the analyses. During the hypoglycaemic clamp from 5.5 mmol/L PG to nadir, the absolute change in mean glucagon concentration was similar for semaglutide vs placebo: 88.3 vs 83.1 pg/mL (estimated difference 5.2 pg/mL [95% confidence interval -7.7 to 18.1]). Concentrations of other counterregulatory hormones increased with both treatments, with a statistically significantly lower increase for noradrenaline and cortisol with semaglutide vs placebo. The glucose infusion rate to maintain constant clamp levels was similar for each treatment group, suggesting an overall similar counterregulatory response. The mean hypoglycaemic symptom score and proportion of participants recognizing hypoglycaemia during the study were lower for semaglutide vs placebo treatment at nadir, but cognitive function test results were similar. No new safety issues were observed for semaglutide. CONCLUSIONS: Semaglutide treatment did not compromise the counterregulatory glucagon response during experimental hypoglycaemia in people with T2D.


Asunto(s)
Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Péptidos Similares al Glucagón/administración & dosificación , Hipoglucemia/metabolismo , Adulto , Glucemia/efectos de los fármacos , Glucemia/metabolismo , Estudios Cruzados , Diabetes Mellitus Tipo 2/metabolismo , Método Doble Ciego , Esquema de Medicación , Femenino , Péptidos Similares al Glucagón/farmacología , Humanos , Hipoglucemia/sangre , Hipoglucemia/inducido químicamente , Hipoglucemia/epidemiología , Masculino , Persona de Mediana Edad , Placebos
4.
Child Dev ; 87(2): 446-64, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26659260

RESUMEN

This cultural-developmental interview study examined moral reasoning in relation to religious culture (evangelical, mainline Protestants), age (children, adolescents, adults), and moral issue (public, private; N = 120). Compared to adolescents and adults, children used more Ethic of Autonomy and less Ethic of Community reasoning. With age, differences between religious cultures became pronounced. Mainline adults invoked an Ethic of Divinity for private issues. Evangelical adolescents and adults used this ethic frequently, but more for public than private issues. These and other findings indicate that evangelical and mainline Protestants diverge on what should be society's moral lingua franca, and cast new and nuanced light on America's "culture wars." Results furthermore highlight comodulation of development and culture that requires life course research on moral reasoning.


Asunto(s)
Desarrollo Humano , Principios Morales , Protestantismo/psicología , Religión y Psicología , Pensamiento , Adolescente , Adulto , Factores de Edad , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estados Unidos/etnología
5.
EClinicalMedicine ; 70: 102521, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38495525

RESUMEN

Background: Trifluridine-tipiracil has shown a survival benefit compared with placebo in patients with chemorefractory metastatic esophago-gastric adenocarcinoma. We aimed to compare the efficacy of trifluridine-tipiracil plus bevacizumab vs trifluridine-tipiracil monotherapy in pre-treated patients with metastatic esophago-gastric adenocarcinoma. Methods: This investigator-initiated, open-label, randomized trial enrolled patients with metastatic esophago-gastric adenocarcinoma. The main inclusion criteria were patients with pre-treated metastatic esophago-gastric adenocarcinoma, and WHO performance status 0 or 1. Participants were randomly assigned (1:1) to receive oral trifluridine-tipiracil (35 mg/m2 twice daily on days 1-5 and 8-12 every 28 days) alone or combined with bevacizumab (5 mg/kg on days 1 and 15) until progression, unacceptable toxicity, or patient decision to withdraw. Randomisation was stratified by sex and treatment line. The primary endpoint was investigator-evaluated progression-free survival. All analyses were based on intention to treat. This trial is registered with EudraCT, 2018-004845-18. Findings: From Oct 1, 2019, to Sept 30, 2021, 103 patients were enrolled and randomly assigned to trifluridine-tipiracil (n = 53) or trifluridine-tipiracil plus bevacizumab (n = 50). The clinical cut-off date was March 1st, 2023, after a median follow-up of 36.6 months. Median progression-free survival was 3.1 months (95% CI 2.0-4.3) in the trifluridine-tipiracil group vs 3.9 months (3.0-6.3) in the trifluridine-tipiracil plus bevacizumab group (hazard ratio 0.68, 95% CI 0.46-1.02; p = 0.058). The most frequent grade 3 or worse adverse event was neutropenia, observed in 26 (49%) patients in the trifluridine-tipiracil group vs 23 patients (46%) in the trifluridine-tipiracil plus bevacizumab group. At least one hospitalization was observed in 21 patients (40%) in the trifluridine-tipiracil group and 22 patients (44%) in the trifluridine-tipiracil plus bevacizumab group. No deaths were deemed treatment related. Interpretation: In patients with pre-treated metastatic esophago-gastric cancer, trifluridine-tipiracil plus bevacizumab, compared to trifluridine-tipiracil monotherapy, did not significantly prolong progression-free survival. The combination of trifluridine-tipiracil with bevacizumab was well tolerated without increase in severe neutropenia and no new safety signals. Funding: Servier, Roche.

6.
Eur J Hum Genet ; 2024 May 16.
Artículo en Inglés | MEDLINE | ID: mdl-38755315

RESUMEN

Timely diagnosis is one of the most serious challenges faced by people living with a rare disease (PLWRD), and this study estimates that in Europe, the average total diagnosis time (TDT) is close to 5 years. We investigated the duration of the TDT for PLWRD in Europe, the difficulties associated with their diagnosis odyssey and the main determinants of diagnosis delays for all rare diseases (RD). We conducted a survey of PLWRD and their families using Rare Barometer, the survey initiative of EURORDIS-Rare Diseases Europe. In geographical Europe, we surveyed 6507 people living with 1675 RD in 41 countries. We then performed a descriptive analysis and ordinal logistic regressions to identify the main determinants of diagnosis delays. Average TDT is 4.7 years. 56% of respondents were diagnosed more than 6 months after a first medical contact. The main determinants of diagnosis delays are symptom onset before 30 years of age, especially during childhood (OR = 3.11; 95% CI: 2.4-4.0) and adolescence (OR = 4.79; 95% CI: 3.7-6.2), being a woman (OR = 1.22; 95% CI:1.1-1.4), living in Northern Europe (OR = 2.15; 95% CI:1.8-2.6) or Western Europe (OR = 1.96; 95% CI:1.6-2.3), the number of healthcare professionals consulted (OR = 5.15; 95% CI:4.1-6.4), misdiagnosis (OR = 2.48; 95% CI:2.1-2.9), referral to a centre of expertise (OR = 1.17; 95% CI:1.0-1.3), unmet needs for psychological support (OR = 1.34; 95% CI:1.2-1.5) and financial support (OR = 1.16; 95% CI:1.0-1.3), having a genetic disease (OR = 1.33; 95% CI:1.1-1.5) and a family history of an RD (OR = 1.36; 95% CI:1.1-1.6). These determinants can inform policies and actions to improve access to diagnosis for all PLWRD.

7.
Clin Exp Pharmacol Physiol ; 40(10): 683-8, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23844835

RESUMEN

(1) The purpose of the present study was to examine whether cytochrome P450 2C19 (CYP2C19) in carriers of the CYP2C19*17 allele is inhibited in vivo by oral contraceptives (OC). (2) Retrospective CYP2C19 phenotyping according to omeprazole : 5-OH-omeprazole molar 3 h plasma metabolic ratios (MR) from a population (n = 222) genotyped as CYP2C19*1/*1, CYP2C19*1/*17 and CYP2C19*17/*17 was analysed. Furthermore, 30 women genotyped as CYP2C19*1/*1 (n = 11), CYP2C19*1/*17 (n = 11) and CYP2C19*17/*17 (n = 8) were prospectively CYP2C19 phenotyped during the administration of OC and again after a minimum 5 days break from OC. (3) We found a significantly higher MR in the CYP2C19*1/*1 genotype group that took OC (n = 48) compared with women who did not take OC (n = 31; geometric mean 1.37 vs. 0.83, respectively; P < 0.05). However, in the CYP2C19*1/*17 genotype group, the geometric means of the MR in the 37 women taking OC and the 20 women not taking OC were 0.67 and 0.46, respectively (P > 0.05). In the CYP2C19*1/*1 panel of the prospective cross-over study, we found a significantly higher MR while women were taking the OC compared with the MR during the OC break (geometric mean 1.21 vs. 0.91, respectively; P = 0.0123). However, in the CYP2C19*1/*17 group, the geometric means of the MR with and without OC were 0.77 and 0.65, respectively, compared with 1.05 and 0.79, respectively, in the CYP2C19*17/*17 group (P = 0.20 and 0.17, respectively). (4) In conclusion, we have shown that OC intake inhibits CYP2C19 in homozygous carriers of the CYP2C19 wild type but that the inhibition is not significant in heterozygous and homozygous carriers of the CYP2C19*17 allele.


Asunto(s)
Hidrocarburo de Aril Hidroxilasas/antagonistas & inhibidores , Anticonceptivos Orales/farmacología , Heterocigoto , 2-Piridinilmetilsulfinilbencimidazoles/metabolismo , Adulto , Alelos , Hidrocarburo de Aril Hidroxilasas/genética , Hidrocarburo de Aril Hidroxilasas/metabolismo , Citocromo P-450 CYP2C19 , Femenino , Expresión Génica , Genotipo , Humanos , Persona de Mediana Edad , Mutación , Omeprazol/metabolismo , Inhibidores de la Bomba de Protones/metabolismo , Adulto Joven
8.
Syst Rev ; 12(1): 223, 2023 11 22.
Artículo en Inglés | MEDLINE | ID: mdl-37993968

RESUMEN

BACKGROUND: Diagnostic errors are a major problem in healthcare. In 2015, the report "Improving Diagnosis in Health Care" by the National Academies of Sciences, Engineering, and Medicine (NASEM) stated that it is likely that most people will experience at least one diagnostic error in their lifetime. The report suggests implementing diagnostic management teams, including patients and their relatives, diagnosticians, and healthcare professionals who support the diagnostic process, to limit diagnostic error and improve patient safety. Implementing interprofessional diagnostic management teams (IDMT), however, is not an easy task due to the complexity of the diagnostic processes and the traditional organization of healthcare with divided departments and healthcare professional who operate in different geographic locations. As this topic is still emerging, a scoping review is ideal to determine the scope of the body of literature on IDMT, indicate the volume of literature and studies available and identify any gaps in knowledge. In a long-term perspective, this scoping review will contribute to prevent diagnostic errors and improve patient safety, for adults and children with physical health issues. METHODS: We will conduct this scoping review in accordance with the JBI methodology and report it based on the PRISMA-ScR. We will systematically search six databases (EMBASE, PubMed, CINAHL, Academic Search Premier, SCOPUS and Web of Science) for papers published between 1985 and 2023 that describe the use of interprofessional diagnostic management teams. The participants included will be adults and children seeking diagnostic care for physical health issues. The concept studied will be interprofessional diagnostic management teams, and the context will be the diagnostic process in the healthcare system. Studies examining the diagnostic process in psychiatry, odontology or complementary medicine will be excluded. Data extraction, including key study characteristics and findings, will be done by two reviewers independently. Any disagreement will be resolved by discussion and eventually by including the two remainder reviewers. DISCUSSION: To our knowledge, this will be the first scoping review regarding IDMT and the derived effects on diagnostic safety and can therefore be a very important contribution to improve patient safety significantly during the diagnostic process. PROTOCOL REGISTRATION: The project is registered at Open Science Framework (OSF) with ID: osf.io/kv2n6.


Asunto(s)
Instituciones de Salud , Psiquiatría , Adulto , Niño , Humanos , Bases de Datos Factuales , Personal de Salud , Seguridad del Paciente , Revisiones Sistemáticas como Asunto , Literatura de Revisión como Asunto
9.
Lancet Rheumatol ; 5(5): e254-e262, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-38251589

RESUMEN

BACKGROUND: Colchicine has been suggested for osteoarthritis treatment, but evidence is contradictory. We aimed to investigate colchicine's efficacy and safety compared with placebo in people with hand osteoarthritis. METHODS: In this single-centre, double-blind, randomised, placebo-controlled trial we recruited adults with symptomatic hand osteoarthritis and finger pain of at least 40 mm on a 100 mm visual analogue scale from an outpatient clinic in Denmark. The hand with the most severe finger pain at inclusion was the target hand. Participants were randomly assigned (1:1) to 0·5 mg colchicine or placebo taken orally twice a day for 12 weeks, stratified by BMI (≥30 kg/m2), sex, and age (≥75 years). Participants, outcome assessors, and data analysts were masked to treatment allocation. The primary endpoint was change from baseline to week 12 in target hand finger pain, assessed on a 100 mm visual analogue scale with a pre-specified minimal clinically important difference of 15 mm, in the intention-to-treat population. Safety was assessed at week 12 in the intention-to-treat population. The study was registered with ClinicalTrials.gov, NCT04601883, and with EudraCT, 2020-002803-20. FINDINGS: Between Jan 15, 2021, and March 3, 2022, 186 people were screened for eligibility, and 100 were randomly assigned to receive colchicine (n=50) or placebo (n=50). Participants had a mean age of 70·9 (SD 7·5) years, 69 (69%) of 100 were women and 31 (31%) were men. All participants completed the study. The mean change from baseline to week 12 in finger pain were -13·9 mm (SE 2·8) in the colchicine group and -13·5 mm (2·8) in the placebo group, with a between-group difference (colchicine vs placebo) of -0·4 mm (95% CI -7·6 to 6·7; p=0·90). In the colchicine group, there were 76 adverse events in 36 (72%) of 50 participants and one serious adverse advent (migraine attack leading to hospital admission). In the placebo group, there were 42 adverse events in 22 (44%) of 50 participants and two serious adverse events (cholecystitis and elevated alanine aminotransferase concentrations, in the same patient). INTERPRETATION: In people with painful hand osteoarthritis, treatment with 0·5 mg of colchicine twice day for 12 weeks did not effectively relieve pain, and treatment with colchicine was associated with more adverse events. FUNDING: The Oak Foundation, IMK Almene Fond, Minister Erna Hamilton's Scholarship for Science and Art, AP Moller and Wife Chastine McKinney Moller's Foundation for Medical Science Advancement, The Danish Medical Association, the Velux Foundation, Aase and Ejnar Danielsen's Foundation, and Director Emil C Hertz and Wife Inger Hertz's foundation.


Asunto(s)
Mano , Extremidad Superior , Adulto , Masculino , Humanos , Femenino , Anciano , Método Doble Ciego , Colchicina/efectos adversos , Dolor
10.
New Dir Child Adolesc Dev ; 2012(137): 69-72, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22956422

RESUMEN

In this chapter, I argue that Dialogical Self Theory (DST) represents a compelling answer to how to conceptualize the psychology of the self in today's world, when people increasingly are aware of more than one way to think, feel, and relate to others. DST envisions a self of plural voices. The chapters in this volume show intriguing applications of the theory, ranging from microlevel infant-caregiver interactions to macrolevel repercussions of globalization among Pacific island communities. I end by suggesting that the pliable nature of DST, illustrated in the chapter on an Indian social movement, is a strength. In my view, it fits with today's need for a new philosophy of social science. One-size-fits-all approaches are often too broad and too biased to adequately capture the complexities of human selves and relations. The challenge and opportunity that we face today is one of bridging universal theories with cultural ones--and the present volume can be read as one example of how to meet that challenge with respect to a psychology of the self.


Asunto(s)
Diversidad Cultural , Relaciones Interpersonales , Autoimagen , Ciencias Sociales , Teoría de la Mente , Comunicación , Humanos , Autopsicología , Identificación Social
11.
Adolesc Res Rev ; 6(3): 277-288, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33521244

RESUMEN

Cultural psychology has raised awareness of religiosity, spirituality, and secularism in people's psychological lives. This article takes a cultural-developmental approach by examining the development of religiosity, spirituality, and secularism among culturally diverse adolescents. At the outset, an explanation is provided as to why the valid study of peoples' psychological lives necessitates taking culture into account, and of key implications for theory and methodology. Throughout research on adolescent religiosity, spirituality, and secularism is described, including studies on conceptions of God, afterlife beliefs, the development of an Ethic of Divinity in moral reasoning, recent increases in spirituality and secularism, and the impact of globalization on worldviews and religiously-based puberty rituals. While the focus is on adolescents, the article includes relevant research with children and emerging adults. Concrete future research directions are proposed, including a call to address the extent to which effects of religion on adolescents are dependent on culture and globalization.

12.
Clin Endocrinol (Oxf) ; 73(6): 769-76, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20718773

RESUMEN

OBJECTIVES: Recombinant human growth hormone (rhGH) replacement therapy in children and adults currently requires daily subcutaneous injections for several years or lifelong. The current study examined safety, tolerability, pharmacokinetic and pharmacodynamic response parameters after single and multiple doses of a long-acting rhGH preparation (NNC126-0083). DESIGN: Randomized, double-blinded, placebo-controlled, multiple-dose, dose-escalating (0·02, 0·04, 0·08 and 0·16 mg protein/kg), sequential dose group trial. SUBJECTS: Forty adult Japanese healthy male volunteers (aged 20-45; body mass index: 18·0-27·0 kg/m(2)). Five groups (n = 8) were randomized to receive multiple doses of NNC126-0083 (n = 6) or placebo (n = 2). METHODS: Primary outcome was safety, and tolerability of multiple doses of NNC126-0083 compared with placebo. Blood samples for the assessment of pharmacokinetics (PK) and pharmacodynamics response [insulin-like growth factor I (IGF-I) and IGF binding protein 3 (IGFBP-3)] were taken after multiple ascending doses. RESULTS: NNC126-0083 was well tolerated and not associated with any local injection-site reactions or lipoatrophy. Following administration, NNC126-0083 levels increased rapidly and remained elevated for several days, returning to baseline before each weekly injection. Steady-state PK was achieved after the third dosing. A more than dose-proportional exposure was observed at the highest NNC126-0083 dose (0·16 mg protein/kg). A strong dose-dependent pharmacodynamic response in circulating concentrations of both IGF-I and IGFBP-3 compared with placebo (P < 0·0001) was observed during the administration of all doses. CONCLUSIONS: Multiple administration of NNC126-0083 in healthy male volunteers indicates that NNC126-0083 has the potential for an efficacious, well-tolerated, once-weekly rhGH compound in the treatment of GH deficiency.


Asunto(s)
Hormona de Crecimiento Humana/efectos adversos , Hormona de Crecimiento Humana/farmacocinética , Adulto , Pueblo Asiatico , Método Doble Ciego , Esquema de Medicación , Hormona de Crecimiento Humana/administración & dosificación , Humanos , Masculino , Persona de Mediana Edad , Placebos , Adulto Joven
13.
Eur J Clin Pharmacol ; 66(7): 655-60, 2010 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-20354688

RESUMEN

PURPOSE: To investigate paroxetine's putative dose-dependent impact on pupil reaction and inhibition of the O-demethylation of tramadol. METHODS: Twelve healthy CYP2D6 extensive metabolizers participated in this double-blinded randomized five-way placebo controlled cross-over study; they received placebo, 10, 20, 30, and 50 mg paroxetine as single oral doses at bedtime. Next morning the pupil was measured followed by oral intake of 50 mg of tramadol, and urine was collected for 8 h. Three hours after ingestion of tramadol a second measurement of the pupil was performed. Enantioselective urine concentrations of (+/-)-tramadol and (+/-)-O-desmethyltramadol (M1) were determined. RESULTS: With placebo, the median maximum pupil diameter was 6.43 mm (range 5.45-7.75 mm) before tramadol and 6.22 mm (4.35-7.65 mm) after 50 mg of tramadol (P = 0.4935). Paroxetine resulted in a statistically significant, dose-dependent dilatation of the pupil with a geometric mean difference of 1.17 (95% CI 1.10-1.24) after ingestion of 50 mg paroxetine (P < 0.001). Likewise, a reduction in the relative constriction amplitude with a geometric mean difference of 0.81 (95% CI 0.71-0.92) (P < 0.001) was seen. A dose-dependent inhibition of the metabolism of tramadol by an increase in the two urinary metabolic ratios (+)-tramadol / (+)-M1 [geometric mean difference 9.09, 95% CI 5.60-14.73 (P < 0.001)] and (-)-M1 / (+)-M1 [geometric mean difference 2.84, 95% CI 2.15-3.77 (P < 0.001)] was also observed. CONCLUSIONS: Paroxetine is a dose-dependent dilator of the pupil and as expected a dose-dependent inhibitor of (+)-tramadol's O-demethylation.


Asunto(s)
Antidepresivos de Segunda Generación/farmacología , Inhibidores del Citocromo P-450 CYP2D6 , Paroxetina/farmacología , Pupila/efectos de los fármacos , Tramadol/farmacocinética , Adulto , Analgésicos Opioides , Antidepresivos de Segunda Generación/administración & dosificación , Relación Dosis-Respuesta a Droga , Interacciones Farmacológicas , Femenino , Humanos , Masculino , Paroxetina/administración & dosificación , Tramadol/análogos & derivados , Tramadol/orina
14.
Eur J Clin Pharmacol ; 66(12): 1189-97, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20924570

RESUMEN

PURPOSE: To investigate if the ordinary use of a vaginal suppository containing miconazole results in systemic absorption that is sufficient to affect the activities of CYP1A2 and CYP3A4, which are major drug- and steroid-metabolising enzymes. METHODS: In 20 healthy non-pregnant women aged 18-45 years, the serum concentration of miconazole was determined following the use of a vaginal suppository containing 1,200 mg miconazole. Enzyme activities of CYP1A2 and CYP3A4 were determined as metabolic ratios of caffeine (CMR = (AFMU + 1MU + 1MX)/17DMU) and quinidine (QMR = 3-hydroxy-quinidine/quinidine) respectively before and 34 h after insertion of the suppository. Miconazole was analysed by LC-MS/MS, while caffeine and metabolites were analysed by HPLC-UV and quinidine and hydroxy-quinidine were analysed by HPLC fluorescence. RESULTS: All 20 women had measurable concentrations of miconazole in serum (mean ± SD: 12.9 ± 5.6 µg/L; range: 3.5-24.6 µg/L). Although not statistically significant, an association between the serum concentrations of miconazole and the inhibition of CYP1A2 activity was indicated. No relation was observed between the CYP3A4 activity and the miconazole serum concentration. CONCLUSIONS: Miconazole is absorbed via the vaginal mucosa to the systemic circulation in measurable concentrations. Our data indicate a concentration-dependent inhibition of CYP1A2, but the effect is negligible compared with the variation in the activity of CYP1A2 and is regarded to be of no clinical significance to the women. However, further studies on the ability of miconazole to be transferred across the placenta or to interfere with the placental function are warranted to secure safe use during pregnancy.


Asunto(s)
Antifúngicos/farmacocinética , Citocromo P-450 CYP1A2/metabolismo , Citocromo P-450 CYP3A/metabolismo , Miconazol/farmacocinética , Vagina , Adulto , Antifúngicos/administración & dosificación , Antifúngicos/sangre , Femenino , Humanos , Miconazol/administración & dosificación , Miconazol/sangre , Supositorios
16.
Sci Rep ; 9(1): 9021, 2019 06 21.
Artículo en Inglés | MEDLINE | ID: mdl-31227771

RESUMEN

Marine microdebris, in particular microplastics (plastics <5 mm), has become an issue of international concern due to its prevalence, persistence and potential adverse impacts on marine ecosystems. Informing source reduction based on ecological effects requires an understanding of the origin, distribution and characteristics of microdebris and the interactions with marine organisms. Here we show widespread contamination of the central Great Barrier Reef environment with microdebris, with microfibres comprising 86% of all items detected. Microdebris intake by coral reef fish was non-random, with chemical composition, shape and colour differing significantly from that detected in surface waters. Furthermore, the origin of microdebris contamination in surface waters is non-random with riverine discharge a likely source for microdebris detected at inshore, but not at offshore reef locations. Our findings demonstrate the complexities associated with determining marine microdebris exposure and fate, and assist in improving future ecological assessments and prioritizing source reduction.

17.
Environ Toxicol Chem ; 38(1): 99-105, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30273991

RESUMEN

We present a blue mussel exposure system where the fate of microplastics (polystyrene beads) is tracked during exposure and depuration phases. This enabled the establishment of a complete mass balance. Quantification of beads in mussels was done with a novel enzymatic digestion protocol. We found a similar relative distribution of beads for 2 environmentally realistic concentrations (5 and 100 beads L-1 ) and no substantial egestion of particles within 2 h of depuration. Environ Toxicol Chem 2019;38:99-105. © 2018 SETAC.


Asunto(s)
Exposición a Riesgos Ambientales , Mytilus edulis/metabolismo , Plásticos/análisis , Animales , Filtración , Microesferas , Poliestirenos/química , Subtilisinas/metabolismo , Contaminantes Químicos del Agua/metabolismo
18.
Healthcare (Basel) ; 6(2)2018 May 07.
Artículo en Inglés | MEDLINE | ID: mdl-29735931

RESUMEN

The WHO Regional Office for Europe developed a set of public health functions resulting in the ten Essential Public Health Operations (EPHO). Public health or primary care settings seem to be favorable to embrace all actions included into EPHOs. The presented paper aims to guide readers on how to assign individual health promotion and environmental health services to public health or primary care settings. Survey tools were developed based on EPHO 2, 3 and 4; there were six key informant surveys out of 18 contacted completed via e-mails by informants working in Denmark on health promotion and five face-to-face interviews were conducted in Australia (Melbourne and Victoria state) with experts from environmental health, public health and a physician. Based on interviews, we developed a set of indicators to support the assignment process. Population or individual focus, a system approach or one-to-one approach, dealing with hazards or dealing with effects, being proactive or reactive were identified as main element of the decision tool. Assignment of public health services to one of two settings proved to be possible in some cases, whereas in many there is no clear distinction between the two settings. National context might be the one which guides delivery of public health services.

20.
Sci Rep ; 8(1): 16422, 2018 11 06.
Artículo en Inglés | MEDLINE | ID: mdl-30401888

RESUMEN

Marine debris, and in particular plastic pollution, is ubiquitous throughout global marine environments. Here, we present a classification of marine microdebris (i.e. debris between 0.1 µm and <5 mm) tailored to represent synthetic, semi-synthetic and naturally-derived items. The specific aim of this classification is to introduce a level of consistency in the higher-level characterisation of marine microdebris, thereby improving the overall reporting on marine microdebris contamination. We first conducted an extensive literature review on the accumulation of ingested debris in fish to identify discrepancies in marine microdebris reporting as a basis for the new classification. The review reveals the diverse nature of ingested marine microdebris, including items that are non-plastic but often incorrectly reported on as microplastics. We then applied our classification to a case study on wild-caught juvenile coral trout, Plectropomus spp., from the Great Barrier Reef World Heritage Area, Australia. This first report on accumulation of ingested marine debris in commercial fish on the reef demonstrates a high frequency of occurrence and a prevalence of semi-synthetic and naturally-derived fibres. Based on our findings, we offer recommendations on potential improvements for the classification presented, ultimately contributing to a more realistic assessment of the ecological risks of marine microdebris.


Asunto(s)
Arrecifes de Coral , Monitoreo del Ambiente , Contaminantes Ambientales/clasificación , Peces , Animales , Australia , Contaminantes Ambientales/toxicidad
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA