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1.
J Am Pharm Assoc (2003) ; 64(3): 102055, 2024.
Article in English | MEDLINE | ID: mdl-38401838

ABSTRACT

BACKGROUND: Primary care physician (PCP) shortages are expected to increase. The Michigan Medicine Hypertension Pharmacists' Program uses a team-based care (TBC) approach to redistribute some patient care responsibilities from PCPs to pharmacists for patients with diagnosed hypertension. OBJECTIVE: This evaluation analyzed whether the Michigan Medicine Hypertension Pharmacists' Program increased the availability of hypertension management services and described facilitators that addressed barriers to program sustainability and replicability. METHODS: We conducted a retrospective observational study that used a mixed methods approach. We examined the availability of hypertension management services using the number of pharmacists' referrals of patients to other services and the number of PCP appointments. We analyzed qualitative interviews with program staff and site-level quantitative data to examine the program's impact on the availability of services, the impact of TBC that engaged pharmacists, and program barriers and facilitators. RESULTS: Patients who visited a pharmacist had fewer PCP visits over 3- and 6-month periods compared to a matched comparison group that did not see a pharmacist and were 1.35 times more likely to receive a referral to a specialist within a 3-month period. Support from leaders and physicians, shared electronic health record access, and financial backing emerged as leading factors for program sustainability and replicability. CONCLUSION: Adding pharmacists to the care team reduced the number of PCP appointments per patient while increasing the availability of hypertension management services; this may in turn improve PCPs' availability. Similar models may be sustainable and replicable by relying on organizational buy-in, accessible infrastructure, and financing.


Subject(s)
Hypertension , Patient Care Team , Pharmacists , Humans , Hypertension/drug therapy , Pharmacists/organization & administration , Retrospective Studies , Patient Care Team/organization & administration , Michigan , Referral and Consultation/statistics & numerical data , Physicians, Primary Care/statistics & numerical data , Professional Role , Health Services Accessibility/statistics & numerical data , Male , Female , Primary Health Care/statistics & numerical data
2.
Telemed Rep ; 4(1): 67-86, 2023.
Article in English | MEDLINE | ID: mdl-37283852

ABSTRACT

Background: The use of telehealth for the management and treatment of hypertension and cardiovascular disease (CVD) has increased across the United States (U.S.), especially during the COVID-19 pandemic. Telehealth has the potential to reduce barriers to accessing health care and improve clinical outcomes. However, implementation, outcomes, and health equity implications related to these strategies are not well understood. The purpose of this review was to identify how telehealth is being used by U.S. health care professionals and health systems to manage hypertension and CVD and to describe the impact these telehealth strategies have on hypertension and CVD outcomes, with a special focus on social determinants of health and health disparities. Methods: This study comprised a narrative review of the literature and meta-analyses. The meta-analyses included articles with intervention and control groups to examine the impact of telehealth interventions on changes to select patient outcomes, including systolic and diastolic blood pressure. A total of 38 U.S.-based interventions were included in the narrative review, with 14 yielding data eligible for the meta-analyses. Results: The telehealth interventions reviewed were used to treat patients with hypertension, heart failure, and stroke, with most interventions employing a team-based care approach. These interventions utilized the expertise of physicians, nurses, pharmacists, and other health care professionals to collaborate on patient decisions and provide direct care. Among the 38 interventions reviewed, 26 interventions utilized remote patient monitoring (RPM) devices mostly for blood pressure monitoring. Half the interventions used a combination of strategies (e.g., videoconferencing and RPM). Patients using telehealth saw significant improvements in clinical outcomes such as blood pressure control, which were comparable to patients receiving in-person care. In contrast, the outcomes related to hospitalizations were mixed. There were also significant decreases in all-cause mortality when compared to usual care. No study explicitly focused on addressing social determinants of health or health disparities through telehealth for hypertension or CVD. Conclusions: Telehealth appears to be comparable to traditional in-person care for managing blood pressure and CVD and may be seen as a complement to existing care options for some patients. Telehealth can also support team-based care delivery and may benefit patients and health care professionals by increasing opportunities for communication, engagement, and monitoring outside a clinical setting.

3.
Eur J Nutr ; 62(2): 1003-1009, 2023 Mar.
Article in English | MEDLINE | ID: mdl-36346472

ABSTRACT

PURPOSE: To determine the effect of an off-protocol meal during a long-term ad libitum feeding study on changes in total caloric consumption and ratings of hunger and satiety. METHODS: During the ad libitum portion of a 16 weeks research high-protein feeding study, 19 participants were allowed to eat up to one self-selected meal (SSM) a week instead of an intervention diet meal. The SSM was assessed for total caloric and macronutrient composition and compared to the intervention diet for 3 days before and after the SSM day. Visual analog scores rating daily hunger and fullness were collected and compared as well. RESULTS: On the SSM day, the mean ± SD daily caloric intake increased by 262 ± 332 kcal compared to the previous study days (P < 0.001), with no changes in subjective appetite scores. The following day there was a slight but significant reduction in intake (- 58 ± 85 kcal, P = 0.008) compared to the average pre-SSM day with no change in appetite scores. On the SSM day, percent protein intake was inversely associated mean daily caloric intake (r2 = 0.22, P = 0.03). CONCLUSIONS: During a long-term, ad-libitum high-protein feeding study, one SSM lower in protein increased daily total caloric consumption with no impact on appetite ratings and incomplete caloric consumption during subsequent days. These data suggest that during ad-libitum feeding, a single meal change in protein content impacts the relationships between daily level of hunger, satiety and calorie intake. GOV ID: NCT05002491 (retrospectively registered 07/20/2021).


Subject(s)
Appetite , Energy Intake , Humans , Cross-Over Studies , Diet , Hunger , Satiation
4.
Prev Chronic Dis ; 19: E81, 2022 12 08.
Article in English | MEDLINE | ID: mdl-36480804

ABSTRACT

Telehealth is a promising intervention for hypertension management and control and was rapidly adopted by health systems to ensure continuity of care during the COVID-19 pandemic. Rapid evaluations of telehealth strategies at 2 US health systems explored how telehealth affected health care access and blood pressure outcomes among populations disproportionately affected by hypertension. Both health systems implemented telehealth strategies to maintain continuity of health care services during the COVID-19 pandemic. The evaluations used a mixed-method approach; qualitative interviews were conducted with key staff, and quantitative analyses were performed on patient electronic health record data. Both health systems exhibited similar trends in telehealth use, which allowed for continued access to health care for some patients but hindered other patients who had limited access to the internet or the equipment needed. Telehealth provides opportunities for blood pressure control and management. Further evaluation is needed to understand the role of broadband internet access as a social determinant of health and its impact on equitable patient access to health care.


Subject(s)
COVID-19 , Hypertension , Humans , COVID-19/epidemiology , Pandemics , Government Programs , Hypertension/epidemiology , Hypertension/therapy
5.
Am J Health Promot ; 36(3): 487-496, 2022 03.
Article in English | MEDLINE | ID: mdl-34860600

ABSTRACT

PURPOSE: This study describes how recipients of the Centers for Disease Control and Prevention funded Sodium Reduction in Communities Program (SRCP) worked with emergency food programs to improve access to healthy food to address chronic conditions. DESIGN: SRCP recipients partnered with emergency food programs to implement sodium reduction strategies including nutrition standards, procurement practices, environmental strategies, and behavioral economics approaches. SETTING: SRCP recipients and emergency food programs in Washington County and Benton County, Arkansas and King County, Washington. SUBJECTS: SRCP recipient staff, emergency food program staff, and key stakeholders. MEASURES: We conducted semi-structured interviews with key stakeholders and systematic review of program documents. ANALYSIS: Data were analyzed using effects matrices for each recipient. Matrices were organized using select implementation science constructs and compared in a cross-case analysis. RESULTS: Despite limited resources, emergency food programs can implement sodium reduction interventions which may provide greater access to healthy foods and lead to reductions in health disparities. Emergency food programs successfully implemented sodium reduction interventions by building on the external and internal settings; selecting strategies that align with existing processes; implementing change incrementally and engaging staff, volunteers, and clients; and sustaining changes. CONCLUSION: Findings contribute to understanding the ways in which emergency food programs and other organizations with limited resources have implemented public health nutrition interventions addressing food insecurity and improving access to healthy foods. These strategies may be transferable to other settings with limited resources.


Subject(s)
Food , Public Health , Centers for Disease Control and Prevention, U.S. , Food Insecurity , Food Supply , Humans , Sodium , United States
6.
Am J Prev Med ; 62(1): 100-104, 2022 01.
Article in English | MEDLINE | ID: mdl-34556387

ABSTRACT

INTRODUCTION: An estimated 116 million American adults (47.3%) have hypertension. Most adults with hypertension do not have it controlled-3 in 4 (92.1 million) U.S. adults with hypertension have a blood pressure ≥130/80 mmHg. The Pharmacists' Patient Care Process is a standardized patient-centered approach to the provision of pharmacist care that is done in collaboration with other healthcare providers. Through the Michigan Medicine Hypertension Pharmacists' Program, pharmacists use the Pharmacists' Patient Care Process to provide hypertension management services in collaboration with physicians in primary care and community pharmacy settings. In 2019, the impact of Michigan Medicine Hypertension Pharmacists' Program patient participation on blood pressure control was evaluated. METHODS: Propensity scoring was used to match patients in the intervention group with patients in the comparison group and regression analyses were then conducted to compare the 2 groups on key patient outcomes. Negative binomial regression was used to examine the number of days with blood pressure under control. The findings presented in this brief are part of a larger multimethod evaluation. RESULTS: More patients in the intervention group than in the comparison group achieved blood pressure control at 3 months (66.3% vs 42.4%) and 6 months (69.1% vs 56.5%). The intervention group experienced more days with blood pressure under control within a 3-month (18.6 vs 9.5 days) and 6-month period (57.0 vs 37.4 days) than the comparison group did. CONCLUSIONS: Findings support the effectiveness of the Michigan Medicine Hypertension Pharmacists' Program approach to implementing the Pharmacists' Patient Care Process to improve blood pressure control.


Subject(s)
Hypertension , Pharmacies , Adult , Humans , Hypertension/drug therapy , Patient Care , Pharmacists , Professional Role
7.
Public Health Nutr ; 25(4): 1050-1060, 2022 04.
Article in English | MEDLINE | ID: mdl-34693898

ABSTRACT

OBJECTIVE: This study assessed the cost-effectiveness of the Centers for Disease Control and Prevention's (CDC's) Sodium Reduction in Communities Program (SRCP). DESIGN: We collected implementation costs and performance measure indicators from SRCP recipients and their partner food service organisations. We estimated the cost per person and per food service organisation reached and the cost per menu item impacted. We estimated the short-term effectiveness of SRCP in reducing sodium consumption and used it as an input in the Prevention Impact Simulation Model to project the long-term impact on medical cost savings and quality-adjusted life-years gained due to a reduction in CVD and estimate the cost-effectiveness of SRCP if sustained through 2025 and 2040. SETTING: CDC funded eight recipients as part of the 2016-2021 round of the SRCP to work with food service organisations in eight settings to increase the availability and purchase of lower-sodium food options. PARTICIPANTS: Eight SRCP recipients and twenty of their partners. RESULTS: At the recipient level, average cost per person reached was $10, and average cost per food service organisation reached was $42 917. At the food service organisation level, median monthly cost per food item impacted by recipe modification or product substitution was $684. Cost-effectiveness analyses showed that, if sustained, the programme is cost saving (i.e. the reduction in medical costs is greater than the implementation costs) in the target population by $1·82 through 2025 and $2·09 through 2040. CONCLUSIONS: By providing evidence of the cost-effectiveness of a real-world sodium reduction initiative, this study can help inform decisions by public health organisations about related CVD prevention interventions.


Subject(s)
Food Services , Sodium, Dietary , Cost-Benefit Analysis , Humans , Public Health , Sodium
8.
Prev Chronic Dis ; 17: E72, 2020 07 30.
Article in English | MEDLINE | ID: mdl-32730201

ABSTRACT

High sodium intake can lead to hypertension and increase the risk for heart disease and stroke; however, research is lacking on the effectiveness of community-based sodium reduction programs. From 2013 through 2016, the Centers for Disease Control and Prevention (CDC) funded 10 state and local health departments to implement sodium reduction strategies across diverse institutional food settings. Strategies of the Sodium Reduction in Communities Program (SRCP) are implementing food service guidelines, making menu modifications, enabling purchase of reuced-sodium foods, and providing consumer information. CDC aggregated awardee-reported performance measures to evaluate progress in increasing the access, availability, and purchase of reduced sodium foods. Evaluation results of the SRCP show the potential differential effects of sodium reduction strategies in a community setting and support the need for additional community-level efforts in this emerging area of public health.


Subject(s)
Food Services/standards , Nutrition Policy , Sodium, Dietary/adverse effects , Centers for Disease Control and Prevention, U.S. , Humans , Program Evaluation , Public Health/methods , United States
9.
J Restor Med ; 8(1)2019.
Article in English | MEDLINE | ID: mdl-31179163

ABSTRACT

INTRODUCTION: Inflammation underlies a variety of chronic medical conditions, including diabetes. The anti-inflammatory diet, one that excludes foods that may stimulate inflammation and includes foods that reduce inflammation, may improve inflammatory biomarkers in people with diabetes and pre-diabetes. STUDY DESIGN: Thirty participants with diabetes or pre-diabetes were randomized (2:1) in a controlled feeding study that compared the anti-inflammatory diet (n=20) to a control diet (n=10) based on the American Diabetes Association recommendations. Diets were matched for protein, carbohydrate, fat, and fiber content as closely as possible. Participants were fed an isocaloric diet for 2 weeks, followed by continued ad libitum feeding in their dietary group assignment for an additional 4 weeks. All meals were prepared by the study team. OUTCOMES: Primary outcomes included inflammatory markers, including cytokines and hsCRP. Secondary outcomes included body weight and biomarkers for cardiovascular disease and diabetes. RESULTS: Both diets resulted in trends in reduced markers of inflammation, especially with weight loss. In addition, glucose, lipids, and triglycerides all trended downward, also non-significantly and equally in both groups. CONCLUSION: Dietary change can improve inflammation as well as other cardiometabolic risk factors. In this study, the anti-inflammatory diet did not affect markers of inflammation more than the control diet.

10.
J Neurosci ; 34(3): 855-68, 2014 Jan 15.
Article in English | MEDLINE | ID: mdl-24431444

ABSTRACT

Neural circuits are composed of mainly glutamatergic and GABAergic neurons, which communicate through synaptic connections. Many factors instruct the formation and function of these synapses; however, it is difficult to dissect the contribution of intrinsic cell programs from that of extrinsic environmental effects in an intact network. Here, we perform paired recordings from two-neuron microculture preparations of mouse hippocampal glutamatergic and GABAergic neurons to investigate how synaptic input and output of these two principal cells develop. In our reduced preparation, we found that glutamatergic neurons showed no change in synaptic output or input regardless of partner neuron cell type or neuronal activity level. In contrast, we found that glutamatergic input caused the GABAergic neuron to modify its output by way of an increase in synapse formation and a decrease in synaptic release efficiency. These findings are consistent with aspects of GABAergic synapse maturation observed in many brain regions. In addition, changes in GABAergic output are cell wide and not target-cell specific. We also found that glutamatergic neuronal activity determined the AMPA receptor properties of synapses on the partner GABAergic neuron. All modifications of GABAergic input and output required activity of the glutamatergic neuron. Because our system has reduced extrinsic factors, the changes we saw in the GABAergic neuron due to glutamatergic input may reflect initiation of maturation programs that underlie the formation and function of in vivo neural circuits.


Subject(s)
GABAergic Neurons/physiology , Glutamic Acid/physiology , Nerve Net/growth & development , Neurogenesis/physiology , Receptors, AMPA/physiology , Synapses/physiology , Animals , Animals, Newborn , Cells, Cultured , Female , Hippocampus/growth & development , Male , Mice , Mice, Transgenic , Neurons/physiology , Synaptic Transmission/physiology
11.
J Proteome Res ; 11(2): 1133-43, 2012 Feb 03.
Article in English | MEDLINE | ID: mdl-22141365

ABSTRACT

Environmental contaminants from wastewater and industrial or agricultural areas are known to have adverse effects on development, reproduction, and metabolism. However, reliable assessment of environmental contaminant impact at low (i.e., ambient) concentrations using genomics and transcriptomics approaches has proven challenging. A goldfish model was used to investigate the effects of aquatic pollutant exposure in vivo by means of quantitative nuclear magnetic resonance metabolomics in multiple organs to elucidate a system-wide response. Animals were exposed to 4,4'-isopropylidenediphenol (Bisphenol-A, BPA), di-(2-ethylhexyl)-phthalate (DEHP), and nonylphenol (NP). Metabolite-specific spectral analysis combined with pathway-driven bioinformatics indicated changes in energy and lipid metabolism in liver following exposure to individual contaminants and a tertiary mixture. A dissimilar response in testis exposed to DEHP and mixture indicates disrupted AMPK and cAMP signaling. Uniquely, our observations (1) suggest that exposure to a contaminant mixture is characterized by a stress response not predicted from exposure to individual contaminants, even in the absence of other phenotypic features and (2) demonstrate the sensitivity of metabolomics in risk-assessment of environmental toxicant mixtures at ambient concentrations by detecting early stage metabolic dysregulation. These findings have general applicability in the assessment of "benign" compound mixtures in environmental and pharmaceutical development.


Subject(s)
Endocrine Disruptors/toxicity , Goldfish/physiology , Metabolome/drug effects , Stress, Physiological/drug effects , Water Pollutants, Chemical/toxicity , Animals , Benzhydryl Compounds , Drug Synergism , Ecotoxicology , Environmental Exposure , Female , Goldfish/metabolism , Liver/drug effects , Liver/metabolism , Male , Metabolomics , Phenols/toxicity , Phthalic Acids/toxicity , Testis/drug effects , Testis/metabolism , Toxicity Tests
12.
Am Surg ; 77(5): 586-91, 2011 May.
Article in English | MEDLINE | ID: mdl-21679592

ABSTRACT

Originally described over 220 years ago, the clinical scenario of hepatic aneurysms remains incompletely understood. Moreover, its optimal treatment has yet to be defined. The present paper reviews the literature regarding this pathological state of the abdomen and discusses what is known regarding the presentation, diagnosis, and anatomy of hepatic arterial aneurysms.


Subject(s)
Aneurysm, Ruptured/surgery , Aneurysm/diagnosis , Aneurysm/epidemiology , Hepatic Artery/diagnostic imaging , Aneurysm/surgery , Aneurysm, Ruptured/diagnostic imaging , Aneurysm, Ruptured/mortality , Angiography/methods , Female , Hepatic Artery/pathology , Humans , Male , Prognosis , Rare Diseases , Risk Assessment , Severity of Illness Index , Survival Analysis , Vascular Surgical Procedures/methods
13.
Clin Anat ; 24(5): 552-61, 2011 Jul.
Article in English | MEDLINE | ID: mdl-21268121

ABSTRACT

Originally described over 300 years ago, the clinical scenario of intussusception remains incompletely understood. Intussusception is now one of the conditions that can be, most of the time, preoperatively diagnosed and treated with success. This article reviews the literature regarding this pathological state of the abdomen and discusses what is known regarding the presentation, diagnosis, embryology, and anatomy of intussusception.


Subject(s)
Ileal Diseases/diagnosis , Ileocecal Valve/pathology , Intussusception/diagnosis , Cecum/abnormalities , Humans , Ileal Diseases/embryology , Ileal Diseases/etiology , Ileal Diseases/therapy , Ileum/abnormalities , Intussusception/embryology , Intussusception/etiology , Intussusception/therapy , Jejunum/abnormalities
14.
Pediatr Res ; 65(6): 681-5, 2009 Jun.
Article in English | MEDLINE | ID: mdl-19430384

ABSTRACT

Deficient cholesterol and/or excessive 7-dehydrocholesterol (7-DHC) may be responsible for the pathology of Smith-Lemli-Opitz syndrome (SLOS). Both high-cholesterol diets given to ameliorate cholesterol deficiency while decreasing 7-DHC and cholesterol-enriched diets plus simvastatin to further decrease sterol synthesis have been used as potential therapies. However, the effect of dietary cholesterol and simvastatin on cholesterol synthesis in SLOS has not been reported. Twelve subjects with SLOS enrolled in the study: Nine had received a high cholesterol diet (HI) for 3 y and three were studied after 4 wk on a low cholesterol diet (LO). Cholesterol fractional synthesis rate (FSR) was measured after oral administration of deuterium oxide, using gas chromatography isotope ratio mass spectrometry. FSR was lower in HI compared with LO (HI: 1.46 +/- 0.62%/d; LO: 4.77 +/- 0.95%/d; p < 0.001). Three HI subjects were retested after 0.8 y taking simvastatin (HI + ST). Simvastatin tended to reduce FSR and significantly decreased (p < 0.01) plasma 7-DHC compared with cholesterol supplementation alone. The study demonstrates the utility of the deuterium incorporation method to understand the effect of therapeutic interventions in SLOS. The data suggest that dietary cholesterol supplementation reduces cholesterol synthesis in SLOS and further support the rationale for the combined treatment of SLOS with a cholesterol-enriched diet and simvastatin.


Subject(s)
Cholesterol, Dietary/metabolism , Cholesterol/biosynthesis , Simvastatin/therapeutic use , Smith-Lemli-Opitz Syndrome/metabolism , Adolescent , Anticholesteremic Agents , Child , Child, Preschool , Cholesterol, Dietary/administration & dosage , Dehydrocholesterols/metabolism , Dietary Supplements , Female , Humans , Infant , Male , Smith-Lemli-Opitz Syndrome/diet therapy , Smith-Lemli-Opitz Syndrome/drug therapy
15.
J Pediatr ; 154(4): 557-561.e1, 2009 Apr.
Article in English | MEDLINE | ID: mdl-19101685

ABSTRACT

OBJECTIVE: To test the hypothesis that there is a correlation between the ratio of plant sterols to cholesterol in plasma and dietary cholesterol absorption in children with Smith-Lemli-Opitz syndrome (SLOS), a cholesterol synthesis disorder. STUDY DESIGN: We obtained measurements of cholesterol absorption with a direct radioisotope cholesterol absorption method during 9 visits of children with SLOS. We measured plasma sterols in 22 children with SLOS and 16 control children, and we measured dietary intake of cholesterol and sitosterol (n=11 SLOS). RESULTS: The correlations of 2 plasma plant sterol ratios (sitosterol/cholesterol and campesterol/cholesterol) with direct cholesterol absorption measurement were poor (R= -0.33 and R= -0.25, respectively), significantly lower than the published correlation in adults (R=0.73; P< .02). CONCLUSIONS: Although the ratios of plant sterols to cholesterol in plasma has been used as a surrogate for cholesterol absorption in adults and children, these ratios may not accurately reflect cholesterol absorption in children with SLOS. These ratios should not be used as a surrogate for cholesterol absorption in children without further validation.


Subject(s)
Cholesterol, Dietary/metabolism , Intestinal Absorption , Phytosterols/blood , Smith-Lemli-Opitz Syndrome/blood , Smith-Lemli-Opitz Syndrome/diet therapy , Adolescent , Adult , Biomarkers/blood , Case-Control Studies , Child , Child, Preschool , Cholesterol, Dietary/blood , Female , Humans , Infant , Male , Sensitivity and Specificity , Sitosterols/blood
17.
Eur J Dermatol ; 18(2): 172-80, 2008.
Article in English | MEDLINE | ID: mdl-18424378

ABSTRACT

Atopic dermatitis (AD) and psoriasis vulgaris (Pso) represent the most frequent chronic inflammatory skin diseases. It has been assumed for a long time that these diseases have a completely different background. Recent findings about the genetic, epidemiologic and pathophysiologic factors of both diseases have remarkably improved our knowledge about the complex mechanisms underlying AD and Pso. Beyond that, in view of these findings, the question arises, which similarities and differences between AD and Pso exist. In order to address this point, we provide an overview about the current knowledge in the field of AD and Pso.


Subject(s)
Dermatitis, Atopic/genetics , Psoriasis/genetics , Dermatitis, Atopic/drug therapy , Dermatitis, Atopic/pathology , Humans , Phenotype , Psoriasis/drug therapy , Psoriasis/pathology
18.
Mol Genet Metab ; 90(1): 64-9, 2007 Jan.
Article in English | MEDLINE | ID: mdl-16996288

ABSTRACT

The incidence of overweight and obesity is increasing among children with long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) or mitochondrial trifunctional (TFP) deficiency. Traditional treatment includes fasting avoidance and consumption of a low-fat, high-carbohydrate diet. A diet higher in protein and lower in carbohydrate may help to lower total energy intake while maintaining good metabolic control. To determine the short-term safety and efficacy of a high protein diet, subjects were admitted to the General Clinical Research Center and fed an ad-libitum high-protein diet and a high-carbohydrate diet for 6 days each using a randomized, crossover design. Nine subjects with LCHAD or TFP deficiency, age 7-14 were enrolled. Body composition was determined by DEXA. Total energy intake was evaluated daily. Resting energy expenditure and substrate utilization were determined by indirect calorimetry. Post-prandial metabolic responses of plasma glucose, insulin, leptin, ghrelin, acylcarnitines, and triglyceride were determined in response to a liquid meal. Subjects had a higher fat mass, lower lean mass and higher plasma leptin levels compared to reference values. While on the high protein diet energy consumption was an average of 50 kcals/day lower (p = 0.02) and resting energy expenditure was an average of 170 kcals/day higher (p = 0.05) compared to the high carbohydrate diet. Short-term higher protein diets were safe, well tolerated, and resulted in lowered energy intake and increased energy expenditure than the standard high-carbohydrate diet. Long-term studies are needed to determine whether higher protein diets will reduce the risk of overweight and obesity in children with LCHAD or TFP deficiency.


Subject(s)
3-Hydroxyacyl CoA Dehydrogenases/deficiency , Dietary Proteins/metabolism , Energy Metabolism/physiology , Multienzyme Complexes/deficiency , 3-Hydroxyacyl CoA Dehydrogenases/genetics , Adolescent , Child , Cohort Studies , Cross-Over Studies , Dietary Proteins/administration & dosage , Energy Metabolism/genetics , Female , Humans , Long-Chain-3-Hydroxyacyl-CoA Dehydrogenase , Male , Mitochondrial Trifunctional Protein , Multienzyme Complexes/genetics , Prospective Studies
19.
J Lipid Res ; 47(12): 2789-98, 2006 Dec.
Article in English | MEDLINE | ID: mdl-16983147

ABSTRACT

Smith-Lemli-Opitz syndrome (SLOS) is an inherited autosomal recessive cholesterol deficiency disorder. Our studies have shown that in SLOS children, urinary mevalonate excretion is normal and reflects hepatic HMG-CoA reductase activity but not ultimate sterol synthesis. Hence, we hypothesized that in SLOS there may be increased diversion of mevalonate to nonsterol isoprenoid synthesis. To test our hypothesis, we measured urinary dolichol and ubiquinone, two nonsterol isoprenoids, in 16 children with SLOS and 15 controls, all fed a low-cholesterol diet. The urinary excretion of both dolichol (P < 0.002) and ubiquinone (P < 0.02) in SLOS children was 7-fold higher than in control children, whereas mevalonate excretion was comparable. In a subset of 12 SLOS children, a high-cholesterol diet decreased urinary mevalonate excretion by 61% (P < 0.001), dolichol by 70% (P < 0.001), and ubiquinone by 67% (P < 0.03). Our hypothesis that in SLOS children, normal urinary mevalonate excretion results from increased diversion of mevalonate into the production of nonsterol isoprenoids is supported. Dietary cholesterol supplementation reduced urinary mevalonate and nonsterol isoprenoid excretion but did not change the relative ratios of their excretion. Therefore, in SLOS, a secondary peripheral regulation of isoprenoid synthesis may be stimulated.


Subject(s)
Cholesterol, Dietary/administration & dosage , Dolichols/urine , Smith-Lemli-Opitz Syndrome/diet therapy , Smith-Lemli-Opitz Syndrome/metabolism , Ubiquinone/urine , Adolescent , Adult , Case-Control Studies , Child , Child, Preschool , Cholesterol/metabolism , Dolichols/metabolism , Female , Humans , Infant , Male , Mevalonic Acid/metabolism , Mevalonic Acid/urine , Models, Biological , Terpenes/metabolism , Ubiquinone/metabolism
20.
Am J Clin Nutr ; 76(5): 923-7, 2002 Nov.
Article in English | MEDLINE | ID: mdl-12399261

ABSTRACT

BACKGROUND: Few studies have tested the hypothesis that changes in disease risk factors are more closely associated with changes in visceral fat than with changes in other adipose tissue depots, particularly in subjects with different ethnic or racial backgrounds. OBJECTIVE: We describe changes in triacylglycerol, total cholesterol, HDL cholesterol, LDL cholesterol, insulin sensitivity (S(i)), visceral fat, and subcutaneous abdominal adipose tissue (SAAT) with weight loss in premenopausal, overweight [body mass index (in kg/m(2)): 27-30], African American (n = 19) and white (n = 18) women. DESIGN: Assessments were performed before and after diet-induced weight loss to a BMI < 25. Body composition and body fat distribution were assessed with dual-energy X-ray absorptiometry and computed tomography, respectively; S(i) was assessed with an intravenous-glucose-tolerance test and minimal modeling. RESULTS: White women lost significantly more visceral fat and less SAAT than did African American women despite similar weight losses (approximately 13 kg). Mixed-model analysis indicated significant effects of time (ie, weight loss) on S(i), triacylglycerol, HDL cholesterol, and LDL cholesterol and of race on triacylglycerol. Time x race interaction terms were not significant. After adjustment for either total body or visceral fat, time was not related to any outcome variable; however, race remained significantly related to triacylglycerol. CONCLUSIONS: With weight loss, moderately overweight African American and white women experienced significant improvements in S(i) and lipids. The beneficial effects of weight loss did not differ with race and could not be attributed to a specific body fat depot. Lower triacylglycerol concentrations among African American women are independent of both obesity status and body fat distribution.


Subject(s)
Black People , Insulin/physiology , Lipids/blood , Obesity/pathology , Premenopause/physiology , Weight Loss , White People , Abdomen/pathology , Adipose Tissue/pathology , Adult , Black or African American , Female , Humans , Middle Aged , Obesity/blood , Obesity/ethnology , Obesity/physiopathology , Osmolar Concentration , Subcutaneous Tissue/pathology , Triglycerides/blood , Viscera/pathology
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