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1.
Psychol Med ; 53(9): 4083-4093, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-35392995

RESUMEN

BACKGROUND: Identification of treatment-specific predictors of drug therapies for bipolar disorder (BD) is important because only about half of individuals respond to any specific medication. However, medication response in pediatric BD is variable and not well predicted by clinical characteristics. METHODS: A total of 121 youth with early course BD (acute manic/mixed episode) were prospectively recruited and randomized to 6 weeks of double-blind treatment with quetiapine (n = 71) or lithium (n = 50). Participants completed structural magnetic resonance imaging (MRI) at baseline before treatment and 1 week after treatment initiation, and brain morphometric features were extracted for each individual based on MRI scans. Positive antimanic treatment response at week 6 was defined as an over 50% reduction of Young Mania Rating Scale scores from baseline. Two-stage deep learning prediction model was established to distinguish responders and non-responders based on different feature sets. RESULTS: Pre-treatment morphometry and morphometric changes occurring during the first week can both independently predict treatment outcome of quetiapine and lithium with balanced accuracy over 75% (all p < 0.05). Combining brain morphometry at baseline and week 1 allows prediction with the highest balanced accuracy (quetiapine: 83.2% and lithium: 83.5%). Predictions in the quetiapine and lithium group were found to be driven by different morphometric patterns. CONCLUSIONS: These findings demonstrate that pre-treatment morphometric measures and acute brain morphometric changes can serve as medication response predictors in pediatric BD. Brain morphometric features may provide promising biomarkers for developing biologically-informed treatment outcome prediction and patient stratification tools for BD treatment development.


Asunto(s)
Antipsicóticos , Trastorno Bipolar , Adolescente , Humanos , Niño , Trastorno Bipolar/diagnóstico por imagen , Trastorno Bipolar/tratamiento farmacológico , Fumarato de Quetiapina/farmacología , Fumarato de Quetiapina/uso terapéutico , Antipsicóticos/farmacología , Antipsicóticos/uso terapéutico , Litio/uso terapéutico , Estudios Prospectivos , Antimaníacos/farmacología , Antimaníacos/uso terapéutico , Método Doble Ciego , Resultado del Tratamiento , Manía , Encéfalo/diagnóstico por imagen
2.
Hepatology ; 73(6): 2110-2123, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-32926749

RESUMEN

BACKGROUND AND AIMS: Organs from hepatitis C virus (HCV)-viremic donors have been used in HCV-uninfected recipients (D+/R-), but the optimal treatment approach has not been defined. We evaluated the kinetics of HCV infection following transplant in D+/R- kidney-transplant (KT) and liver-transplant (LT) recipients when a preemptive antiviral strategy was used. APPROACH AND RESULTS: Six US transplant programs prospectively treated D+/R- primary LT and KT recipients with sofosbuvir-velpastasvir for 12 weeks starting once viremia was confirmed following transplant and the patients were judged to be clinically stable, including estimated glomerular filtration rate >30 mL/min. Primary endpoints were sustained virologic response at 12 weeks following transplant and safety (assessed by proportion of treatment-related adverse and serious adverse events). Of the 24 patients transplanted (13 liver, of whom 2 had prior-treated HCV infection; 11 kidney), 23 became viremic after transplant. The median (interquartile range) time from transplant to start of antiviral therapy was 7.0 (6.0, 12.0) versus 16.5 (9.8, 24.5) days, and the median (interquartile range) HCV-RNA level 3 days after transplant was 6.5 (3.9, 7.1) versus 3.6 (2.9, 4.0) log10  IU/mL in LT versus KT recipients, respectively. By week 4 of treatment, 10 of 13 (77%) LT, but only 2 of 10 (20%) KT, had undetectable HCV RNA (P = 0.01). At the end of treatment, all LT recipients were HCV RNA-undetectable, whereas 3 (30%) of the kidney recipients still had detectable, but not quantifiable, viremia. All achieved sustained virologic response at 12 weeks following transplant (lower 95% confidence interval bound: 85%). Serious adverse events considered possibly related to treatment were antibody-mediated rejection, biliary sclerosis, cardiomyopathy, and graft-versus-host disease, with the latter associated with multiorgan failure, premature treatment discontinuation, and death. CONCLUSIONS: Despite differing kinetics of early HCV infection in liver versus non-liver recipients, a preemptive antiviral strategy is effective. Vigilance for adverse immunologic events is warranted.


Asunto(s)
Antivirales/administración & dosificación , Hepacivirus/efectos de los fármacos , Hepatitis C/prevención & control , Trasplante de Riñón/efectos adversos , Trasplante de Hígado/efectos adversos , Carbamatos/administración & dosificación , Esquema de Medicación , Femenino , Compuestos Heterocíclicos de 4 o más Anillos/administración & dosificación , Humanos , Riñón/virología , Modelos Lineales , Hígado/virología , Masculino , Persona de Mediana Edad , Prueba de Estudio Conceptual , Estudios Prospectivos , Sofosbuvir/administración & dosificación , Respuesta Virológica Sostenida , Donantes de Tejidos , Receptores de Trasplantes , Carga Viral/efectos de los fármacos , Viremia
3.
Am J Transplant ; 21(4): 1556-1563, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33021008

RESUMEN

The management of a kidney transplant program has evolved significantly in the last decades to become a highly specialized, multidisciplinary standard of care for end-stage kidney disease. Transplant center job descriptions have similarly morphed with increasing responsibilities to address a more complex patient mix, increasing medical and surgical therapeutic options, and increasing regulatory burden in the face of an ever-increasing organ shortage. Within this evolution, the role of the Kidney Transplant Medical Director (KTMD) has expanded beyond the basic requirements described in the United Network for Organ Sharing bylaws. Without a clear job description, transplant nephrology trainees may be inadequately trained and practicing transplant nephrologists may face opaque expectations for the roles and responsibilities of Medical Director. To address this gap and clarify the key areas in which the KTMD interfaces with the kidney transplant program, American Society of Transplantation (AST) formed a Task Force of 14 AST KTMDs to review and define the role of the KTMD in key aspects of administrative, regulatory, budgetary, and educational oversight of a kidney transplant program.


Asunto(s)
Fallo Renal Crónico , Trasplante de Riñón , Tutoría , Nefrología , Ejecutivos Médicos , Obtención de Tejidos y Órganos , Humanos , Estados Unidos
4.
BMC Public Health ; 21(1): 2182, 2021 11 29.
Artículo en Inglés | MEDLINE | ID: mdl-34844567

RESUMEN

BACKGROUND: Pertussis and seasonal influenza are responsible for significant maternal, neonatal, and infant morbidity and mortality, but vaccine coverage rates (VCR) for both pertussis (administered as a tetanus, diphtheria, acellular pertussis [Tdap] vaccination) and seasonal influenza in pregnancy remain generally low. Only a small number of countries, including Spain, the United Kingdom (UK), and the United States (US), have high Tdap and seasonal influenza VCRs in pregnancy. The purpose of this study was to identify the key factors that contributed to the high VCRs observed in these countries. METHODS: The experience from both Tdap and seasonal influenza vaccination programmes during pregnancy were documented in Spain, the UK, and the US using a three-step approach. A literature review yielded 157 publications, and a further 117 documents were selected through desk research. A published five-pillar VCR framework for influenza was amended to evaluate the specific contributing factors leading to high Tdap and seasonal influenza VCRs among pregnant women. RESULTS: The analysis identified components that contributed to higher VCR in pregnant women across three different healthcare systems in Spain, UK, and US. The combination of several key interventions in each country led to a rapid increase in VCR that reached near-optimal levels (i.e. 75% for seasonal influenza) within a few years. As well as inclusion in national immunisation programme and vaccine reimbursement, key components that were identified included the mobilisation of health authorities, prenatal care Healthcare Professionals (HCP) and scientific societies, the inclusion of vaccination in antenatal medical guidance, the provision of educational material to HCPs, and a strong disease awareness driven by recent pertussis outbreaks in each country. CONCLUSIONS: Although there is no simple, universal solution to improving sub-optimal VCRs, the list of components identified in this study from three countries with high-performing Tdap and seasonal influenza vaccination programmes provides a basis for public health and medical stakeholders in other countries to define strategies to successfully implement national vaccination programmes for pregnant women.


Asunto(s)
Vacunas contra Difteria, Tétanos y Tos Ferina Acelular , Gripe Humana , Tos Ferina , Femenino , Humanos , Lactante , Recién Nacido , Gripe Humana/epidemiología , Gripe Humana/prevención & control , Embarazo , Estaciones del Año , España/epidemiología , Reino Unido/epidemiología , Estados Unidos/epidemiología , Vacunación , Tos Ferina/epidemiología , Tos Ferina/prevención & control
5.
Emerg Infect Dis ; 22(11)2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27767010

RESUMEN

Babesia microti, an intraerythrocytic parasite, is tickborne in nature. In contrast to transmission by blood transfusion, which has been well documented, transmission associated with solid organ transplantation has not been reported. We describe parasitologically confirmed cases of babesiosis diagnosed ≈8 weeks posttransplantation in 2 recipients of renal allografts from an organ donor who was multiply transfused on the day he died from traumatic injuries. The organ donor and recipients had no identified risk factors for tickborne infection. Antibodies against B. microti parasites were not detected by serologic testing of archived pretransplant specimens. However, 1 of the organ donor's blood donors was seropositive when tested postdonation and had risk factors for tick exposure. The organ donor probably served as a conduit of Babesia parasites from the seropositive blood donor to both kidney recipients. Babesiosis should be included in the differential diagnosis of unexplained fever and hemolytic anemia after blood transfusion or organ transplantation.


Asunto(s)
Babesia microti , Babesiosis/parasitología , Babesiosis/transmisión , Trasplante de Órganos/efectos adversos , Adulto , Anciano , Babesia microti/genética , Babesia microti/inmunología , Babesiosis/diagnóstico , Babesiosis/tratamiento farmacológico , Biomarcadores , Transfusión Sanguínea , Eritrocitos/parasitología , Eritrocitos/patología , Humanos , Trasplante de Riñón/efectos adversos , Masculino , Factores de Tiempo , Donantes de Tejidos , Tomografía Computarizada por Rayos X , Trasplante Homólogo
6.
Bipolar Disord ; 18(6): 490-501, 2016 09.
Artículo en Inglés | MEDLINE | ID: mdl-27647671

RESUMEN

OBJECTIVES: We tested the hypothesis that, with treatment, functional magnetic resonance imaging (fMRI) regional brain activation in first-episode mania would normalize - i.e., that differences from healthy subjects would diminish over time, and would be associated with clinical remission status, potentially identifying neuroanatomic treatment response markers. METHODS: Forty-two participants with bipolar I disorder were recruited during their first manic episode, pseudo-randomized to open-label lithium or quetiapine, and followed for 8 weeks. fMRI scans were obtained at baseline and then after 1 and 8 weeks of treatment, while participants performed a continuous performance task with emotional distracters. Healthy participants received fMRI scans at these same intervals. Specific region-of-interest (ROI) activations within prefrontal emotional networks were assessed as potential measures of treatment response. RESULTS: ROI data were reduced using exploratory factor analysis, which identified five factors that were organizationally consistent with functional anatomic models of human emotion modulation. Half of the participants with bipolar disorder achieved remission by Week 8 and were contrasted with the other half that did not. Analyses demonstrated that, in the bipolar disorder group in general, treatment led to decreases in activation across brain regions toward healthy subject values. However, differences in activation changes were observed between subjects with bipolar disorder who did or did not achieve remission in subcortical and amygdala factors. CONCLUSIONS: These findings provide evidence for potential neuroanatomic treatment response markers in first-episode bipolar disorder.


Asunto(s)
Amígdala del Cerebelo , Trastorno Bipolar , Litio/uso terapéutico , Imagen por Resonancia Magnética/métodos , Fumarato de Quetiapina/uso terapéutico , Adulto , Amígdala del Cerebelo/diagnóstico por imagen , Amígdala del Cerebelo/fisiopatología , Antimaníacos/uso terapéutico , Trastorno Bipolar/diagnóstico , Trastorno Bipolar/psicología , Trastorno Bipolar/terapia , Emociones/fisiología , Episodio de Atención , Femenino , Humanos , Masculino , Escalas de Valoración Psiquiátrica , Análisis y Desempeño de Tareas , Resultado del Tratamiento
7.
Am J Nephrol ; 41(1): 37-47, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25634230

RESUMEN

BACKGROUND/AIMS: Post-renal transplant recurrent glomerulonephritis (GN) contributes to allograft loss. Rituximab treatment has been used in a multidose strategy with variable efficacy and toxicity. We investigated a novel single-dose approach. METHODS: A single center, retrospective, cohort study was conducted between January 1998 and April 2012 among renal allograft recipients with recurrent GN treated with rituximab (cases) or without (controls). The primary outcome was complete response (CR, urine protein/creatinine ratio (UP/C) <0.3). Secondary outcomes included partial response (PR >50% reduction in UP/C), response relapse, treatment-response by GN type, acute rejection incidence, time to graft loss, and infection incidence. RESULTS: The median dose of rituximab was 200 mg per patient. Of 20 rituximab cases and 13 controls, CR was achieved in eight (40%) versus four (31%), respectively (p = 0.72). Three subjects in each group achieved PR (p = 0.66). Response relapse was similar between the two groups (p = 0.47). Significantly more subjects with recurrent membranous nephropathy (MN) achieved CR with rituximab treatment (p = 0.029). Acute rejection was lower in the rituximab group versus controls (n = 0 vs. 4; p = 0.046). The mean time to graft loss was much later in the rituximab group (35 months, (95% CI 33-37)) versus controls (29 months, (95% CI 24-35)) at 36 months (p = 0.04). There was no infection increase in rituximab-treated subjects (p = 0.16). CONCLUSION: Single-dose rituximab for treatment of recurrent GN was associated with less subsequent rejection and longer time to graft loss without increased infection, but was no more effective than regimens not using rituximab at 36-months except those with recurrent membranous GN.


Asunto(s)
Anticuerpos Monoclonales de Origen Murino/administración & dosificación , Glomerulonefritis Membranosa/tratamiento farmacológico , Factores Inmunológicos/administración & dosificación , Trasplante de Riñón , Adulto , Anticuerpos Monoclonales de Origen Murino/efectos adversos , Femenino , Tasa de Filtración Glomerular , Glomerulonefritis Membranosa/fisiopatología , Rechazo de Injerto/tratamiento farmacológico , Supervivencia de Injerto/efectos de los fármacos , Humanos , Factores Inmunológicos/efectos adversos , Infecciones/inducido químicamente , Masculino , Persona de Mediana Edad , Periodo Posoperatorio , Recurrencia , Estudios Retrospectivos , Rituximab , Factores de Tiempo , Resultado del Tratamiento
8.
Transpl Int ; 28(9): 1121-5, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25864519

RESUMEN

De novo thrombotic microangiopathy (TMA) after renal transplant is rare. Cytomegalovirus (CMV)-related post-transplant TMA has only been reported in 6 cases. We report an unusual case of a 75-year-old woman who developed de novo TMA in association with CMV viremia. The recurrence of TMA with CMV viremia, the resolution with treatment for CMV, and the lack of correlation with a calcineurin inhibitor (CNI) in our case support CMV as the cause of the TMA. What is unique is that the use of eculizumab without plasmapheresis led to prompt improvement in renal function. After a failure to identify a genetic cause for TMA and the clear association with CMV, eculizumab was discontinued. This case provides insight into the pathogenesis and novel treatment of de novo TMA, highlights the beneficial effects of complement inhibitors in this disease, and shows that they can be safely discontinued once the inciting etiology is addressed.


Asunto(s)
Anticuerpos Monoclonales Humanizados/uso terapéutico , Infecciones por Citomegalovirus/complicaciones , Trasplante de Riñón/efectos adversos , Microangiopatías Trombóticas/complicaciones , Anciano , Anticuerpos Monoclonales/química , Inhibidores de la Calcineurina/uso terapéutico , Proteínas del Sistema Complemento , Citomegalovirus , Femenino , Humanos , Inmunosupresores/uso terapéutico , Complicaciones Posoperatorias , Recurrencia , Microangiopatías Trombóticas/virología
9.
Artículo en Inglés | MEDLINE | ID: mdl-38770645

RESUMEN

Objective: Youth with bipolar spectrum disorders (BSD) are frequently prescribed second-generation antipsychotics (SGAs). Nonadherence to treatment often results in increased mood symptoms and diminished quality of life. We examined SGA adherence rates and adherence barriers among youth who have overweight/obesity and are diagnosed with BSD enrolled in a multisite pragmatic clinical trial. Methods: SGA adherence and adherence barriers at baseline via patient- and caregiver report was assessed. Adherence was defined as taking ≥70% of prescribed SGA doses in the past week. The weighted Kappa statistic was used to measure child-caregiver agreement about adherence rates, barriers, and caregiver assistance. Regression analyses were used to examine associations of caregiver assistance, age, sex, race, insurance status, dosing frequency, and number of concomitant medications with adherence. Barriers to adherence were analyzed separately for youth and their caregivers, using logistic regression to assess associations between informant-reported barriers and informant-reported adherence. Results: Participants included 1485 patients and/or caregivers. At baseline, 88.6% of patients self-reported as adherent; 92.0% of caregivers reported their child was adherent. Concordance between patients and caregivers was moderate (k = 0.42). Approximately, 50% of the sample reported no adherence barriers. Frequently endorsed barriers included forgetting, side effects, being embarrassed to take medications, and preferring to do something else. Concordance between informants regarding adherence barriers was weak (k = 0.05-0.36). Patients and caregivers who did not endorse adherence barriers reported higher adherence than those who endorsed barriers. Male sex and having once daily dosing of medications were associated with lower adherence. Discussion: One-week patient- and caregiver-reported adherence was high in this sample. Half of the sample reported adherence barriers. Most commonly endorsed barriers were forgetting, side effects, being embarrassed, and preferring to do something else. Caregivers and patients have unique perspectives regarding adherence barriers. Understanding and addressing treatment barriers in clinical practice may facilitate adherence.

10.
Ann Transplant ; 29: e943498, 2024 Mar 12.
Artículo en Inglés | MEDLINE | ID: mdl-38526543

RESUMEN

BACKGROUND LCPT (Envarsus XR®) is a common once-daily, extended-release oral tacrolimus formulation used in kidney transplantation. However, there are minimal evidence-based recommendations regarding optimal dosing and treatment in the de novo and conversion settings. MATERIAL AND METHODS Using Delphi methodology, 12 kidney transplantation experts with LCPT experience reviewed available data to determine potential consensus topics. Key statements regarding LCPT use were generated and disseminated to the panel in an online Delphi survey. Statements were either accepted, revised, or rejected based on the level of consensus, perceived strength of evidence, and alignment with clinical practice. Consensus was defined a priori as ≥75% agreement. RESULTS Twenty-three statements were generated: 14 focused on de novo LCPT use and 9 on general administration or LCPT conversion use. After 2 rounds, consensus was achieved for 11/14 of the former and 7/9 of the latter statements. In a de novo setting, LCPT was recognized as a first-line option based on its safety and efficacy compared to immediate-release tacrolimus. In particular, African Americans and rapid metabolizer populations were identified as preferred for first-line LCPT therapy. In a conversion setting, full consensus was achieved for converting to LCPT to address neurological adverse effects related to immediate-release tacrolimus and for the time required (approximately 7 days) for steady-state LCPT trough levels to be reached. CONCLUSIONS When randomized clinical trials do not replicate current utilization patterns, the Delphi process can successfully generate consensus statements by expert clinicians to inform clinical decision-making for the use of LCPT in kidney transplant recipients.


Asunto(s)
Trasplante de Riñón , Humanos , Técnica Delphi , Tacrolimus/uso terapéutico , Negro o Afroamericano , Toma de Decisiones Clínicas
11.
Transpl Int ; 26(7): 662-72, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23279211

RESUMEN

Currently available immunosuppressive agents can be classified into three categories: induction agents, maintenance therapy, and treatment for rejection. This review article will focus on induction immunosuppression. There are three antibodies which are used for induction therapy: the lymphocyte-depleting agents - anti-thymocyte globulin and alemtuzumab, and basiliximab which is nondepleting. Historically, immunosuppressant selection was solely based on efficacy for prevention of rejection. In the current era of transplantation, it is now common practice in the transplant community to select induction therapy on the basis of risk-benefit considerations for each patient. This article will focus on the efficacy of available induction agents and the selection of induction agent based on donor and recipient risk factors.


Asunto(s)
Inmunosupresores/uso terapéutico , Trasplante de Riñón , Alemtuzumab , Anticuerpos Monoclonales/uso terapéutico , Anticuerpos Monoclonales Humanizados/uso terapéutico , Suero Antilinfocítico/uso terapéutico , Basiliximab , Funcionamiento Retardado del Injerto/etiología , Humanos , Inmunosupresores/efectos adversos , Donadores Vivos , Proteínas Recombinantes de Fusión/uso terapéutico
12.
Clin Child Psychol Psychiatry ; 28(4): 1279-1290, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36475895

RESUMEN

BACKGROUND: The purpose is to compare youth- and caregiver-reported characteristics of family environment, within and between families with a child experiencing a first manic episode of bipolar disorder (BPD), and families without a child with BPD or familial history of psychiatric disorders (HF). METHODS: Family environment of 61 families with a child with BPD and 44 HF were assessed with Family Environment Scale (FES). We compared FES subscale scores between families with BPD and HF, and caregiver- and youth-rated scores. RESULTS: Families with BPD differed significantly from HF on 8/10 FES subscales scores. Youth differed significantly from their caregivers on 7/10 subscales. An interaction effect was observed such that youth with BPD reported lower cohesion and organization, and higher conflict than their caregivers; however, HF did not differ significantly on these domains. CONCLUSIONS: Our results suggest that families with BPD have higher conflict and lower cohesion and organization compared to HF. Results also indicate differences between youth and caregiver perspectives in both groups, which may contribute to family discord. Interventions targeting areas of cohesion, organization, and conflict may be beneficial for youth with BPD and their families, specifically those that identify and bridge perceptual divides.


Asunto(s)
Trastorno Bipolar , Manía , Niño , Humanos , Adolescente , Familia/psicología
13.
J Bioeth Inq ; 20(1): 89-99, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36472763

RESUMEN

Survival after solid-organ transplantation has improved significantly, and many contemporary transplant recipients are of childbearing potential. There are limited data to guide decision-making surrounding pregnancy after transplantation, variations in clinical practice, and significant knowledge gaps, all of which raise significant ethical issues. Post-transplant pregnancy is associated with an increased risk of maternal and fetal complications. Shared decision-making is a central aspect of patient counselling but is complicated by significant knowledge gaps. Stakeholder interests can be in conflict; exploring these tensions can help patients to evaluate their options and inform their deliberations. We argue that uniform, evidence-based recommendations for pregnancy after solid organ transplantation are needed. Conducting research, including patient-engaged studies, in this area should be priority for the transplant community.


Asunto(s)
Trasplante de Órganos , Receptores de Trasplantes , Embarazo , Femenino , Humanos , Lagunas en las Evidencias , Feto , Consejo
14.
Transplantation ; 107(5): 1180-1187, 2023 05 01.
Artículo en Inglés | MEDLINE | ID: mdl-36279020

RESUMEN

BACKGROUND: Postkidney transplant diabetes mellitus (PTDM) affects cardiovascular, allograft, and recipient health. We tested whether early intervention with sitagliptin for hyperglycemia (blood glucose >200 mg/dL) within the first week of transplant and discontinued at 3 mo could prevent development of PTDM in patients without preexisting diabetes. METHODS: The primary efficacy objective was to improve 2-h oral glucose tolerance test (OGTT) by > 20 mg/dL at 3 mo posttransplant. The secondary efficacy objective was to prevent new onset PTDM, defined as a normal OGTT at 3 mo. RESULTS: Sixty-one patients consented, and 50 patients were analyzed. The 3-mo 2-h OGTT (end of treatment) was 141.00 ± 62.44 mg/dL in the sitagliptin arm and 165.22 ± 72.03 mg/dL ( P = 0.218) in the placebo arm. The 6-mo 2-h OGTT (end of follow-up) was 174.38 ± 77.93 mg/dL in the sitagliptin arm and 171.86 ± 83.69 ng/dL ( P = 0.918) in the placebo arm. Mean intrapatient difference between 3- and 6-mo 2-h OGTT in the 3-mo period off study drug was 27.56 + 52.74 mg/dL in the sitagliptin arm and -0.14 + 45.80 mg/dL in the placebo arm ( P = 0.0692). At 3 mo, 61.54% of sitagliptin and 43.48% of placebo patients had a normal 2-h OGTT ( P = 0.2062), with the absolute risk reduction 18.06%. There were no differences in HbA1c at 3 or 6 mo between sitagliptin and placebo groups. Participants tolerated sitagliptin well. CONCLUSIONS: Although this study did not show a significant difference between groups, it can inform future studies in the use of sitagliptin in the very early posttransplant period.


Asunto(s)
Diabetes Mellitus Tipo 2 , Inhibidores de la Dipeptidil-Peptidasa IV , Trasplante de Riñón , Humanos , Fosfato de Sitagliptina/efectos adversos , Hipoglucemiantes/uso terapéutico , Inhibidores de la Dipeptidil-Peptidasa IV/efectos adversos , Trasplante de Riñón/efectos adversos , Incidencia , Glucemia , Método Doble Ciego , Resultado del Tratamiento
15.
J Affect Disord ; 338: 312-320, 2023 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-37301295

RESUMEN

OBJECTIVES: To characterize the neuroanatomy of BD in youth and its correlation to clinical characteristics. METHODS: The current study includes a sample of 105 unmedicated youth with first-episode BD, aged between 10.1 and 17.9 years, and 61 healthy comparison adolescents, aged between 10.1 and 17.7 years, who were matched for age, race, sex, socioeconomic status, intelligence quotient (IQ), and education level. T1-weighted magnetic resonance imaging (MRI) images were obtained using a 4 T MRI scanner. Freesurfer (V6.0) was used to preprocess and parcellate the structural data, and 68 cortical and 12 subcortical regions were considered for statistical comparisons. The relationship between morphological deficits and clinical and demographic characteristics were evaluated using linear models. RESULTS: Compared with healthy youth, youth with BD had decreased cortical thickness in frontal, parietal, and anterior cingulate regions. These youth also showed decreased gray matter volumes in 6 of the 12 subcortical regions examined including thalamus, putamen, amygdala and caudate. In further subgroup analyses, we found that youth with BD with comorbid attention-deficit hyperactivity disorder (ADHD) or with psychotic symptoms had more significant deficits in subcortical gray matter volume. LIMITATIONS: We cannot provide information about the course of structural changes and impact of treatment and illness progression. CONCLUSIONS: Our findings indicate that youth with BD have significant neurostructural deficits in both cortical and subcortical regions mainly located in the regions related to emotion processing and regulation. Variability in clinical characteristics and comorbidities may contribute to the severity of anatomic alterations in this disorder.


Asunto(s)
Trastorno Bipolar , Humanos , Adolescente , Niño , Trastorno Bipolar/diagnóstico por imagen , Trastorno Bipolar/epidemiología , Trastorno Bipolar/patología , Encéfalo/patología , Sustancia Gris/diagnóstico por imagen , Sustancia Gris/patología , Imagen por Resonancia Magnética/métodos , Corteza Cerebral/diagnóstico por imagen , Corteza Cerebral/patología
16.
Neuropsychopharmacology ; 48(4): 615-622, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36229596

RESUMEN

Disruptions in the limbic system, and in emotion regulation circuitry that supports affect modulation, have been reported during acute manic episodes of bipolar disorder (BD). The impact of pharmacological treatment on these deficits, especially in youth, remains poorly characterized. 107 youths with acute manic or mixed episodes of bipolar I disorder and 60 group-matched healthy controls were recruited. Youth with bipolar disorder were randomized to double-blind treatment with quetiapine or lithium and assessed weekly. Task-based fMRI studies were performed using an identical pairs continuous performance task (CPT-IP) at pre-treatment baseline and post-treatment weeks one and six. Region of interest analyses focused on the limbic system and ventral PFC - basal ganglia - thalamocortical loop structures known to be involved in emotion regulation. Changes in regional activation were compared between the two treatment groups, and pretreatment regional activation was used to predict treatment outcome. Mania treatment scores improved more rapidly in the quetiapine than lithium treated group, as did significant normalization of neural activation toward that of healthy individuals in left amygdala (p = 0.007), right putamen (p < 0.001), and right globus pallidus (p = 0.003). Activation changes in the right putamen were correlated with reduction of mania symptoms. The limbic and emotion regulation system activation at baseline and week one predicted treatment outcome in youth with bipolar disorder with significant accuracy (up to 87.5%). Our findings document more rapid functional brain changes associated with quetiapine than lithium treatment in youth with bipolar disorder, with most notable changes in the limbic system and emotion regulation circuitry. Pretreatment alterations in these regions predicted treatment response. These findings advance understanding of regional brain alterations in youth with bipolar disorder, and show that fMRI data can predict treatment outcome before it can be determined clinically, highlighting the potential utility of fMRI biomarkers for early prediction of treatment outcomes in bipolar disorder.Clinical Trials Registration: Name: Multimodal Neuroimaging of Treatment Effects in Adolescent Mania. URL: https://clinicaltrials.gov/ . Registration number: NCT00893581.


Asunto(s)
Antipsicóticos , Trastorno Bipolar , Regulación Emocional , Adolescente , Humanos , Amígdala del Cerebelo , Antipsicóticos/uso terapéutico , Trastorno Bipolar/diagnóstico por imagen , Trastorno Bipolar/tratamiento farmacológico , Litio/uso terapéutico , Compuestos de Litio/uso terapéutico , Imagen por Resonancia Magnética , Manía/tratamiento farmacológico , Fumarato de Quetiapina/uso terapéutico , Método Doble Ciego
17.
Nephrol Dial Transplant ; 27(12): 4339-47, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22778179

RESUMEN

BACKGROUND: Serum cytokines are increased in patients with acute kidney injury (AKI) and predict increased mortality. It is widely assumed that increased renal production of cytokines is the source of increased serum cytokines; the role of extra-renal cytokine production and impaired renal cytokine clearance is less well studied. We hypothesized that cytokine production in AKI was mononuclear phagocyte dependent, independent of production by the kidneys, and that serum cytokine clearance would be impaired in AKI. METHODS: Bilateral nephrectomy was used as a model of AKI to assess cytokine production independent of kidney cytokine production. Mononuclear phagocytes were depleted utilizing intravenous (IV) administration of liposome-encapsulated clodronate (LEC). Twenty-three serum cytokines were determined utilizing a multiplex cytokine kit. Proteins for cytokines were determined in the spleen and liver by enzyme-linked immunosorbent assay. Recombinant cytokines were injected by IV into mice with bilateral nephrectomy to determine the effect of absent kidney function on serum cytokine clearance. RESULTS: Serum interleukin (IL)-6, chemokine (C-X-C motif) ligand 1 (CXCL1), IL-10, IL-1ß, monocyte chemotactic protein 1 (MCP-1), IL-5 and eotaxin were increased in the serum of mice after bilateral nephrectomy and were reduced with LEC. Serum IL-12p40 and regulated upon activation, normal T-cell expressed, and secreted (RANTES) were increased after bilateral nephrectomy and were further increased with LEC. Spleen IL-6, CXCL1, IL-10 and IL-1ß and liver IL-6 and IL-10 were increased after bilateral nephrectomy. After IV injection, IL-6, CXCL1, IL-10 and IL-1ß had a prolonged serum cytokine appearance in mice with bilateral nephrectomy versus sham operation. CONCLUSIONS: Increased mononuclear phagocyte production and impaired renal clearance contribute to serum cytokine accumulation in AKI, independent of kidney injury. The effect of AKI on cytokine production and clearance may contribute to the increased mortality of patients with AKI.


Asunto(s)
Lesión Renal Aguda/metabolismo , Citocinas/metabolismo , Animales , Citocinas/biosíntesis , Modelos Animales de Enfermedad , Ratones , Ratones Endogámicos C57BL , Nefrectomía
18.
Clin J Am Soc Nephrol ; 17(1): 114-120, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-33731339

RESUMEN

Placed in a historical context, this overview focuses on post-transpant pregnancy, fatherhood, and contraception in women and men. The critical importance of early reproductive counseling because of improved sexual function and the early return of ovulation and menses post-transplant is emphasized. We explain the decision making regarding contraception choices. The available data on the safety of immunosuppressive drugs in pregnancy, and for men desiring fatherhood, are detailed. The risk of maternal ingestion of mycophenolate products on the in utero fetus is considered and contrasted with the lack of concern for their use by men fathering children. Pregnancy risks to the allograft, baby, and mother are discussed. An infant's exposure to specific immunosuppressant medications through breastfeeding is reviewed. The ethics and realities of post-transplant parenthood are explored.


Asunto(s)
Anticoncepción , Trasplante de Riñón , Femenino , Humanos , Terapia de Inmunosupresión , Recién Nacido , Masculino , Complicaciones Posoperatorias/etiología , Embarazo , Complicaciones del Embarazo/etiología , Resultado del Embarazo , Factores de Riesgo
19.
Clin J Am Soc Nephrol ; 17(9): 1372-1381, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35914792

RESUMEN

BACKGROUND AND OBJECTIVES: There are no standardized benchmarks to measure productivity and compensation of transplant nephrologists in the United States, and consequently, criteria set for general nephrologists are often used. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: A web-based survey was sent to 809 nephrologists who were members of the American Society of Transplantation to gather data on measures of productivity, compensation, and job satisfaction. Factors associated with higher total compensation and job satisfaction were examined. RESULTS: Of 365 respondents, 260 were actively practicing in the United States and provided data on compensation. Clinical productivity was assessed variably, and although 194 (76%) had their work relative value units (wRVUs) reported to them, only 107 (44%) had an established RVU target. Two hundred thirty-four respondents (90%) had fixed base compensation, and 172 (66%) received a bonus on the basis of clinical workload (68%), academic productivity (31%), service (32%), and/or teaching responsibility (31%). Only 127 respondents (49%) filled out time studies, and 92 (35%) received some compensation for nonbillable transplant activity. Mean total compensation (base salary and bonus) was $274,460±$91,509. The unadjusted mean total compensation was higher with older age and was higher for men; Hispanic and White respondents; adult care transplant nephrologists; residents of the western United States; US medical school graduates; nonuniversity hospital employees; and those with an administrative title, higher academic rank, and a higher number of years in practice. Two hundred and nine respondents (80%) thought their compensation was unfair, and 180 (70%) lacked a clear understanding of how they were compensated. One hundred forty-five respondents (55%) reported being satisfied or highly satisfied with their job. Job satisfaction was greater among those with higher amounts of compensation and US medical school graduates. CONCLUSIONS: We report significant heterogeneity in the assessment of productivity and compensation for transplant nephrologists and the association of compensation with job satisfaction.


Asunto(s)
Satisfacción en el Trabajo , Nefrólogos , Adulto , Masculino , Humanos , Estados Unidos , Encuestas y Cuestionarios , Carga de Trabajo , Salarios y Beneficios
20.
J Am Acad Child Adolesc Psychiatry ; 61(8): 1023-1033, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35091050

RESUMEN

OBJECTIVE: Disruptions in cognition are a clinically significant feature of bipolar disorder (BD). The effects of different treatments on these deficits and the brain systems that support them remain to be established. METHOD: A continuous performance test was administered to 55 healthy controls and 71 acutely ill youths with mixed/manic BD to assess vigilance and working memory during task-based functional magnetic resonance imaging studies. Patients, who were untreated for at least 7 days at baseline, and controls were scanned at pretreatment baseline and at weeks 1 and 6. After baseline testing, patients (n = 71) were randomly assigned to 6-week double-blind treatment with lithium (n = 26; 1.0-1.2 mEq/L) or quetiapine (n = 45; 400-600 mg). Weighted seed-based connectivity (wSBC) was used to assess regional brain interactions during the attention task compared with the control condition. RESULTS: At baseline, youths with BD showed reduced connectivity between bilateral anterior cingulate cortex and both left ventral lateral prefrontal cortex and left insula and increased connectivity between left ventral lateral prefrontal cortex and left temporal pole, left orbital frontal cortex and right postcentral gyrus, and right amygdala and right occipital pole compared with controls. At 1-week follow-up, quetiapine, but not lithium, treatment led to a significant shift of connectivity patterns toward those of the controls. At week 6, compared with baseline, there was no difference between treatment conditions, at which time both patient groups showed significant normalization of brain connectivity toward that of controls. CONCLUSION: Functional alterations in several brain regions associated with cognitive processing and the integration of cognitive and affective processing were demonstrated in untreated youths with BD before treatment. Treatment reduced several of these alterations, with significant effects at week 1 only in the quetiapine treatment group. Normalization of functional connectivity might represent a promising biomarker for early target engagement in youth with BD. CLINICAL TRIAL REGISTRATION INFORMATION: Multimodal Neuroimaging of Treatment Effects in Adolescent Mania; https://clinicaltrials.gov/; NCT00893581.


Asunto(s)
Trastorno Bipolar , Adolescente , Trastorno Bipolar/diagnóstico por imagen , Trastorno Bipolar/tratamiento farmacológico , Encéfalo , Humanos , Imagen por Resonancia Magnética/métodos , Vías Nerviosas , Neuroimagen , Fumarato de Quetiapina/farmacología , Fumarato de Quetiapina/uso terapéutico
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