Publications by authors named "Jonathan D Savant"

Background: Paxlovid, a fixed combination nirmatrelvir and ritonavir (NIM-RTV), is a potent inhibitor of cytochrome P450 3A4 (CYP3A4) isoenzyme. It is approved for the treatment of mild to moderate COVID-19 infections in patients at risk for serious infection. The metabolism of tacrolimus, a CYP3A4 substrate, is significantly reduced in those receiving NIM-RTV.

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Background: Antibody-mediated rejection is one of the most significant risk factors for allograft dysfunction and failure in children and adolescents with kidney transplants, yet optimal treatment remains unidentified. To date, there are mixed findings regarding the use of Bortezomib, a plasma cell apoptosis inducer, as an adjunct therapy in the treatment of antibody-mediated rejection.

Methods: In a retrospective single center study, we reviewed the efficacy and tolerability of bortezomib as adjunct therapy for treatment-refractory antibody-mediated rejection.

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Background: Use of eGFR to determine preemptive waitlisting eligibility may contribute to racial/ethnic disparities in access to waitlisting, which can only occur when the eGFR falls to ≤20 ml/min per 1.73 m 2 . Use of an alternative risk-based strategy for waitlisting may reduce these inequities ( e.

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Carotid-femoral pulse wave velocity (cfPWV) is a measure of arterial stiffness associated with cardiovascular events in the general population and in adults with chronic kidney disease. However, few data exist regarding cfPWV in children with chronic kidney disease. We compared observed cfPWV assessed via applanation tonometry in children enrolled in the CKiD cohort study (Chronic Kidney Disease in Children) to normative data in healthy children and examined risk factors associated with elevated cfPWV.

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Objective: Our aim was to characterize the nutrient intake of children with chronic kidney disease (CKD) relative to recommended intake levels.

Methods: We conducted a cross-sectional study of dietary intake assessed by Food Frequency Questionnaire (FFQ) in The North American Chronic Kidney Disease in Children (CKiD) prospective cohort study. Nutrient intake was analyzed to estimate the daily consumption levels of various nutrients and compared with national guidelines for intake.

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Objectives: Effective and safe pain management interventions in methadone maintenance treatment are needed.

Methods: We examined the feasibility (ie, single-session attendance) and acceptability (ie, patient satisfaction and booster session attendance) of cognitive-behavioral therapy-informed groups for pain management-Coping With Pain, Relaxation Training, Group Singing, and Mindful Walking. Pre- and postsession measures were collected.

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Few studies have examined exercise as a substance use disorder treatment. This pilot study investigated the feasibility and acceptability of an exercise intervention comprising the Wii Fit Plus™ and of a time-and-attention sedentary control comprising Wii™ videogames. We also explored their impact on physical activity levels, substance use, and psychological wellness.

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Background: Arterial stiffness is a natural consequence of aging, accelerated in certain chronic conditions, and predictive of cardiovascular events in adults. Emerging research suggests the importance of arterial stiffness in pediatric populations.

Methods: There are different indices of arterial stiffness.

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Background And Objectives: Although higher levels of dispositional optimism are associated with decreased levels of psychopathology and pain, and higher levels of mental health functioning-important outcomes in opioid treatment programs-a paucity of studies has examined dispositional optimism among individuals with opioid use disorders. The aim of this study was to examine the clinical correlates (i.e.

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Background And Objectives: A paucity of studies has examined the pain experiences of opioid dependent individuals seeking office-based buprenorphine-naloxone treatment (BNT). We set out to examine, among those seeking BNT: (a) the prevalence of pain types (i.e.

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The psychometric properties of the Iowa Personality Disorder Screen (IPDS) were examined in 150 methadone-maintained patients who completed measures of demographic, psychopathology, substance use, pain, and methadone maintenance treatment (MMT) characteristics. An exploratory factor analysis revealed a two-factor solution that explained 45% of the scale variance. The first factor captured internalizing tendencies, such as inhibition and hypersensitivity to others.

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Unlabelled: Previous studies have not examined patterns of pain treatment use among patients seeking office-based buprenorphine-naloxone treatment (BNT) for opioid dependence.

Objectives: To examine, among individuals with pain seeking BNT for opioid dependence, the use of pain treatment modalities, perceived efficacy of prior pain treatment, and interest in pursuing pain treatment while in BNT.

Methods: A total of 244 patients seeking office-based BNT for opioid dependence completed measures of demographics, pain status (ie, "chronic pain (CP)" [pain lasting at least 3 months] vs "some pain (SP)" [pain in the past week not meeting the duration criteria for chronic pain]), pain treatment use, perceived efficacy of prior pain treatment, and interest in receiving pain treatment while in BNT.

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Background: Psychiatric comorbidity can adversely affect opioid dependence treatment outcomes. While the prevalence of psychiatric comorbidity among patients seeking methadone maintenance treatment has been documented, the extent to which these findings extend to patients seeking primary care office-based buprenorphine/naloxone treatment is unclear.

Aims: To determine the prevalence of mood and substance use disorders among patients seeking primary care office-based buprenorphine/naloxone treatment, via cross sectional survey.

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