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Articles by B. T Felt
Total Records ( 3 ) for B. T Felt
  J. R Connor , X. S Wang , R. P Allen , J. L Beard , J. A Wiesinger , B. T Felt and C. J. Earley

Restless leg syndrome (RLS) is a sensorimotor disorder. Clinical studies have implicated the dopaminergic system in RLS, while others have suggested that it is associated with insufficient levels of brain iron. To date, alterations in brain iron status have been demonstrated but, despite suggestions from the clinical literature, there have been no consistent findings documenting a dopaminergic abnormality in RLS brain tissue. In this study, the substantia nigra and putamen were obtained at autopsy from individuals with primary RLS and a neurologically normal control group. A quantitative profile of the dopaminergic system was obtained. Additional assays were performed on a catecholaminergic cell line and animal models of iron deficiency. RLS tissue, compared with controls, showed a significant decrease in D2R in the putamen that correlated with severity of the RLS. RLS also showed significant increases in tyrosine hydroxylase (TH) in the substantia nigra, compared with the controls, but not in the putamen. Both TH and phosphorylated (active) TH were significantly increased in both the substantia nigra and putamen. There were no significant differences in either the putamen or nigra for dopamine receptor 1, dopamine transporters or for VMAT. Significant increases in TH and phosphorylated TH were also seen in both the animal and cell models of iron insufficiency similar to that from the RLS autopsy data. For the first time, a clear indication of dopamine pathology in RLS is revealed in this autopsy study. The results suggest cellular regulation of dopamine production that closely matches the data from cellular and animal iron insufficiency models. The results are consistent with the hypothesis that a primary iron insufficiency produces a dopaminergic abnormality characterized as an overly activated dopaminergic system as part of the RLS pathology.

  E. S Kuhl , B. T Felt and S. R. Patton

Objective Limited data are available regarding whether children being treated for retentive encopresis are adherent to recommendations to increase their daily fluid intake. The purpose of this study was to examine fluid adherence in children who received treatment for retentive encopresis. Methods A retrospective chart review was performed using diet diary data for 26 children (ages 3–12) who completed a group behavioral intervention for retentive encopresis. Results Mean daily intake of clear fluid increased significantly during treatment and children relied primarily on water and juice to make this dietary change. However, adherence rates to clear fluid goals were <50%. Conclusions Children's increased clear fluid intake did not equate to high fluid adherence. Children's high juice consumption is concerning as it could place them at risk for other negative health consequences. Future research should examine whether enhanced fluid education and use of behavior change strategies yield higher fluid adherence.

  E. S Kuhl , F Hoodin , J Rice , B. T Felt , J. R Rausch and S. R. Patton

Objective To examine the efficacy of an enhanced intervention (EI) compared to standard care (SC) in increasing daily water intake and fluid goal adherence in children seeking treatment for retentive encopresis. Methods Changes in beverage intake patterns and fluid adherence were examined by comparing 7-week diet diary data collected during participation in the EI to achieved data for families who had previously completed the SC. Results Compared to children in SC (n = 19), children in the EI (n = 18) demonstrated a significantly greater increase in daily water intake from baseline to the conclusion of treatment ( p ≤ .001), and were four and six times more likely to meet fluid targets in Phases 1 (Weeks 3–4) and 2 (Weeks 5–6) of fluid intervention, respectively (both p ≤ .001). Conclusions Enhanced education and behavioral strategies were efficacious in increasing children’s intake of water and improving fluid adherence. Future research should replicate the findings in a prospective randomized clinical trial to discern their effectiveness.

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