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1.
Med Dosim ; 47(3): 227-235, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35523695

RESUMO

Breast with supraclavicular fossa (Br+SCF) radiotherapy treatments can utilise a monoisocentric technique to concurrently treat the breast area (tangent fields) and supraclavicular area (opposing fields). The region where these treatment areas adjoin is known as the junction region, field junction, or match line. Dose variations that may occur about the junction region, due to geometrical inaccuracies, are typically feathered out in patient free-breathing treatments. However, there is limited information on how dose at the junction is influenced in deep inspiration breath hold (DIBH) treatments. This study aims to investigate dose variation at the field junction for a patient population undertaking a DIBH Br+SCF treatment course. GAFChromic EBT3 film was used to record the dose across the junction at skin surface for approximately one third of the 25 fraction treatment course for 11 patients undergoing DIBH Br+SCF treatment. Single fraction and summated fraction profiles for each patient were compared to profiles in the treatment planning system and assessed the: (1) local dose variations, (2) position of the 50% dose gradient, and (3) relative dose at the nominal junction. Local dose variations of 10% or greater, position displacement of the junction greater than 5 mm, and relative dose differences at the match line greater than 10% can be found within single fraction dose profiles. When these single fractions are summed over the treatment course, the position variations reduce to 2 mm and dose variations reduced to within 10% for 10 of the 11 patients. Only one of 11 patients recorded a summed dose difference greater than ±10% over their treatment, recording 76% ± 8% of the planned dose in this region. This was due to a small overall position displacement of 1.8 ± 1.6 mm from the nominal junction. A feathering of the dose at the junction is present for DIBH Br+SCF patient treatments. The feathering effect is sufficient, in the majority of cases studied, to reduce any differences in dose and displacement present in single fractions. This work also demonstrates that there may be exceptions from this observed behavior that should be considered. Further study in this area using a larger patient cohort is recommended.


Assuntos
Neoplasias da Mama , Neoplasias Unilaterais da Mama , Mama , Neoplasias da Mama/radioterapia , Suspensão da Respiração , Clavícula , Feminino , Coração , Humanos , Órgãos em Risco , Dosagem Radioterapêutica , Planejamento da Radioterapia Assistida por Computador/métodos , Neoplasias Unilaterais da Mama/radioterapia
2.
Nutr Rev ; 80(9): 1985-2001, 2022 08 08.
Artigo em Inglês | MEDLINE | ID: mdl-35244175

RESUMO

OBJECTIVES: The pregnancy-induced alterations in 1-carbon (1C) metabolism, effects of advancing gestation on maternal plasma concentrations of methyl nutrients, and potential implications for maternal dietary intake and infant clinical outcomes are summarized in this narrative review. BACKGROUND: 1C metabolism encompasses a series of pathways where 1C units are transferred among nutrients such as B vitamins, choline, and amino acids (the methyl nutrients). Use of isotopic tracers and measuring methyl nutrients in maternal plasma and infant cord blood has advanced the understanding of 1C flux in pregnancy and kinetics of maternal-placental-fetal transfer. Methyl nutrients are supplied from maternal plasma to the placenta and fetus to support growth and 1C metabolism in these compartments. METHODS: A literature review was completed in MEDLINE and Google Scholar using search terms related to 1C metabolism, methyl nutrients, and nutrition requirements in pregnancy. English-language articles were reviewed in which 1C metabolism in pregnancy, maternal-placental-fetal transfer of methyl nutrients, and determinants of maternal plasma concentrations of methyl nutrients among healthy pregnant women were assessed. DISCUSSION: Adaptations in 1C metabolism occur throughout a healthy pregnancy to support this unique period of accelerated growth. Studies report similar temporal changes in plasma concentrations of many methyl nutrients, including B vitamins, choline, betaine, methionine, and cysteine, among healthy pregnant women from diverse geographic regions. Other key findings discussed in this review include an apparent high degree of B vitamin transfer to the placenta and fetus, influence of choline supplementation on 1C flux and possible benefit of supplementation for infant cognitive development, and that glycine may be conditionally essential in pregnancy. CONCLUSION: Understanding the flux of 1C metabolism in pregnancy and methyl nutrient transfer from maternal plasma is needed to establish appropriate plasma references ranges and, ultimately, dietary recommendations that aim to prevent deficiency and associated adverse health outcomes for mother and baby.


Assuntos
Complexo Vitamínico B , Carbono/metabolismo , Colina/farmacologia , Feminino , Humanos , Necessidades Nutricionais , Placenta/metabolismo , Gravidez
3.
Nutrients ; 13(6)2021 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-34072630

RESUMO

There is limited evidence regarding the potential risk of untargeted iron supplementation, especially among individuals who are iron-replete or have genetic hemoglobinopathies. Excess iron exposure can increase the production of reactive oxygen species, which can lead to cellular damage. We evaluated the effect of daily oral supplementation on relative leukocyte telomere length (rLTL) and blood mitochondrial DNA (mtDNA) content in non-pregnant Cambodian women (18-45 years) who received 60 mg of elemental iron as ferrous sulfate (n = 190) or a placebo (n = 186) for 12 weeks. Buffy coat rLTL and mtDNA content were quantified by monochrome multiplex quantitative polymerase chain reaction. Generalized linear mixed-effects models were used to predict the absolute and percent change in rLTL and mtDNA content after 12 weeks. Iron supplementation was not associated with an absolute or percent change in rLTL after 12 weeks compared with placebo (ß-coefficient: -0.04 [95% CI: -0.16, 0.08]; p = 0.50 and ß-coefficient: -0.96 [95% CI: -2.69, 0.77]; p = 0.28, respectively). However, iron supplementation was associated with a smaller absolute and percent increase in mtDNA content after 12 weeks compared with placebo (ß-coefficient: -11 [95% CI: -20, -2]; p = 0.02 and ß-coefficient: -11 [95% CI: -20, -1]; p= 0.02, respectively). Thus, daily oral iron supplementation for 12 weeks was associated with altered mitochondrial homeostasis in our study sample. More research is needed to understand the risk of iron exposure and the biological consequences of altered mitochondrial homeostasis in order to inform the safety of the current global supplementation policy.


Assuntos
DNA Mitocondrial , Suplementos Nutricionais , Ferro , Leucócitos/efeitos dos fármacos , Telômero/efeitos dos fármacos , Adulto , Antioxidantes/administração & dosagem , Antioxidantes/farmacologia , Camboja , DNA Mitocondrial/sangue , DNA Mitocondrial/efeitos dos fármacos , Feminino , Humanos , Ferro/administração & dosagem , Ferro/farmacologia , Estresse Oxidativo/efeitos dos fármacos , Adulto Jovem
4.
J Nutr ; 151(8): 2255-2263, 2021 08 07.
Artigo em Inglês | MEDLINE | ID: mdl-33978187

RESUMO

BACKGROUND: The WHO recommends daily iron supplementation for all women in areas where the population-level anemia prevalence is ≥40%, despite the fact that hemoglobin (Hb) concentration is generally considered to be a poor prognostic indicator of iron status. OBJECTIVES: In this secondary analysis, we investigated the predictive power of ten baseline hematological biomarkers towards a 12-week Hb response to iron supplementation. METHODS: Data were obtained from a randomized controlled trial of daily iron supplementation in 407 nonpregnant Cambodian women (18-45 years) who received 60 mg elemental iron as ferrous sulfate for 12 weeks. Ten baseline biomarkers were included: Hb, measured with both a hematology analyzer and a HemoCue; inflammation-adjusted ferritin; soluble transferrin receptor; reticulocyte Hb; hepcidin; mean corpuscular volume; inflammation-adjusted total body iron stores (TBIS); total iron binding capacity; and transferrin saturation. Receiver operating characteristic (ROC) curves from fitted logistic regression models were used to make discrimination comparisons and variable selection methods were used to construct a multibiomarker prognostic model. RESULTS: Only 25% (n = 95/383) of women who completed the trial experienced a 12-week Hb response ≥10 g/L. The strongest univariate predictors of a Hb response were Hb as measured with a hematology analyzer, inflammation-adjusted ferritin, hepcidin, and inflammation-adjusted TBIS (AUCROC = 0.81, 0.83, 0.82, and 0.82, respectively), and the optimal cutoffs to identify women who were likely to experience a Hb response were 117 g/L, 17.3 µg/L, 1.98 nmol/L, and 1.95 mg/kg, respectively. Hb as measured with a hematology analyzer, inflammation-adjusted ferritin, and hepcidin had the best combined predictive ability (AUCROC=0.86). Hb measured with the HemoCue had poor discrimination ability (AUCROC = 0.65). CONCLUSIONS: Baseline Hb as measured with a hematology analyzer was as strong a predictor of Hb response to iron supplementation as inflammation-adjusted ferritin, hepcidin, and inflammation-adjusted TBIS. This is positive given that the WHO currently uses the population-level anemia prevalence to guide recommendations for untargeted iron supplementation.


Assuntos
Anemia Ferropriva , Ferritinas , Povo Asiático , Suplementos Nutricionais , Feminino , Hemoglobinas/metabolismo , Hepcidinas , Humanos , Ferro , Ensaios Clínicos Controlados Aleatórios como Assunto
5.
Transplant Cell Ther ; 27(6): 489.e1-489.e9, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33775907

RESUMO

Allogeneic hematopoietic cell transplantation (HCT) may be efficacious for autoimmune diseases (AIDs), but its efficacy for individual AIDs is unknown. Factors influencing the likelihood of relapse for each AID are also unknown. This study aimed to determine the likelihood of relapse for each common AID and to generate hypotheses about factors influencing the likelihood of relapse. We reviewed charts of adult patients with nonhematologic AIDs who had undergone HCT in Alberta (n = 21) and patients described in the literature (n = 67). We used stringent inclusion criteria to minimize the inclusion of patients whose AID may have been cured before transplantation. We also used stringent definitions of AID relapse and remission. AID relapsed in 2 of 9 patients (22%) with lupus, in 4 of 12 (33%) with rheumatoid arthritis (RA), in 0 of 4 (0%) with systemic sclerosis (SSc), in 3 of 16 (19%) with psoriasis, in 1 of 12 (8%) with Behçet's disease (BD), in 1 of 15 (7%) with Crohn's disease (CD), in 0 of 5 (0%) with ulcerative colitis (UC), in 4 of 8 (50%) with multiple sclerosis (MS), and in 3 of 3 (100%) with type 1 diabetes mellitus (T1DM). Among highly informative patients (followed for >1 year after discontinuation of immunosuppressive therapy if no relapse, or donor AID status known if relapse), relapse occurred in 0 of 3 patients with lupus, in 2 of 7 with RA, in 0 of 2 with SSc, in 3 of 6 with psoriasis, in 0 of 3 with BD, in 0 of 10 with CD, in 0 of 3 with UC, in 2 of 3 with MS, and in 2 of 2 with T1DM. There appeared to be no associations between AID relapse and low intensity of pretransplantation chemoradiotherapy, multiple lines of AID therapy (surrogate for AID refractoriness) except perhaps for lupus, absence of serotherapy for graft-versus-host disease (GVHD) prophylaxis, lack of GVHD except perhaps for lupus, or incomplete donor chimerism. Even though remission commonly occurs after HCT in lupus, RA, SSc, psoriasis, BD, CD, and UC, HCT is efficacious for only a subset of patients. The efficacy appears to be unrelated to pretransplantation therapy, GVHD, or chimerism. Large studies are needed to determine the characteristics of patients likely to benefit from HCT for each AID.


Assuntos
Doenças Autoimunes , Doença Enxerto-Hospedeiro , Transplante de Células-Tronco Hematopoéticas , Adulto , Alberta , Doenças Autoimunes/terapia , Humanos , Transplante Homólogo
6.
Patient Educ Couns ; 103(3): 635-641, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31669047

RESUMO

OBJECTIVE: 1) Evaluate the efficacy of e-Counseling vs. Control to promote lifestyle behaviors at 4 and 12-month follow-ups, 2) examine whether these behaviors changes were associated with lower blood pressure (BP), and Framingham Risk Index (FRI) at 12-month. METHODS: Hypertensive patients (n = 264) were randomized to the e-Counseling or the Control group. Primary trial outcome was BP and secondary outcomes included exercise and diet behaviors. This study presented the results of secondary outcomes. Linear mixed models evaluated treatment effects at 4 and 12-month. Treatment-by-sex exploratory analyses were conducted if no main treatment effect was observed. RESULTS: Daily steps significantly improved in e-Counseling vs. Controls at 12-month. Urinary sodium at 12-month did not significantly differ between the groups, but treatment-by-sex analysis showed that e-Counseling females lowered urinary sodium relative to Controls at 12 months. Improvements in steps and dietary sodium were significantly associated with improvements in BP and FRI at 12-month. CONCLUSION: This hypertension e-Counseling protocol can promote long-term lifestyle behavior changes. Adherence to the lifestyle behavior change was associated with BP and FRI reduction at 12-month. PRACTICE IMPLICATIONS: The hypertension e-counseling protocol has the potential to improve hypertension care and intervention reach.


Assuntos
Dieta Hipossódica/psicologia , Aconselhamento a Distância , Comportamentos Relacionados com a Saúde , Hipertensão/terapia , Estilo de Vida , Autocuidado/métodos , Telemedicina/métodos , Adulto , Pressão Sanguínea/fisiologia , Conselheiros , Dieta/psicologia , Método Duplo-Cego , Feminino , Humanos , Hipertensão/diagnóstico , Hipertensão/psicologia , Masculino , Pessoa de Meia-Idade , Comportamento de Redução do Risco , Resultado do Tratamento
7.
J Nutr ; 149(9): 1503-1510, 2019 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-31174215

RESUMO

BACKGROUND: Multiple micronutrient (MMN) supplementation may result in interaction effects due to competing absorptive pathways of trace elements. OBJECTIVES: The aim of this study was to investigate the effect of MMN supplementation with or without iron on serum zinc, selenium, and copper concentrations in Cambodian women. METHODS: In a 2 × 2 factorial double-blind randomized 12-wk trial, predominantly anemic, nonpregnant women (aged 18-45 y) received daily 60 mg of iron (Fe; n = 201); 14 other micronutrients including zinc (15 mg), selenium (65 µg), and copper (2 mg), but no iron (MMN; n = 202); 60 mg iron plus MMN (Fe + MMN; n = 206); or a placebo (n = 200). Fasting morning blood was collected at baseline and 12 wk from women in 26 villages in Kampong Chhnang province. Serum zinc, selenium, and copper concentrations (secondary outcomes of the randomized controlled trial) were measured using inductively coupled plasma mass spectrometry. Generalized linear regression was used to estimate intervention effects [ß coefficient (95% CI)] for Fe (with or without MMN) and MMN (with or without Fe) after testing for the presence of an Fe × MMN interaction. RESULTS: A total of 760 women completed the trial. Zinc deficiency prevalence at baseline was 45% (inflammation-adjusted serum zinc <10.7 µmol/L). A significant Fe × MMN interaction (P = 0.02) was detected in the 2 × 2 analysis with serum zinc concentration as the outcome: the MMN group had a higher mean serum zinc concentration at 12 wk (12.3 µmol/L; 95% CI: 12.2, 12.4 µmol/L) compared with all other groups, and the Fe + MMN group had a higher mean serum zinc concentration (11.6 µmol/L; 95% CI: 11.5, 11.7 µmol/L) compared with the Fe group (11.0 µmol/L; 95% CI: 10.9, 11.0 µmol/L) and the placebo group (11.2 µmol/L; 95% CI: 11.1, 11.4 µmol/L). CONCLUSIONS: The inclusion of 60 mg iron in the daily MMN formulation may be interfering with the absorption and/or metabolism of supplemental zinc in Cambodian women. This is of particular concern when MMN supplementation is implemented in populations with risk of zinc deficiency. This trial was registered at clinicaltrials.gov as NCT-02481375.


Assuntos
Anemia/tratamento farmacológico , Suplementos Nutricionais , Ferro/administração & dosagem , Micronutrientes/administração & dosagem , Zinco/sangue , Adolescente , Adulto , Cobre/sangue , Método Duplo-Cego , Feminino , Humanos , Pessoa de Meia-Idade , Selênio/sangue , Adulto Jovem , Zinco/administração & dosagem , Zinco/deficiência
8.
Female Pelvic Med Reconstr Surg ; 25(2): 139-144, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30807416

RESUMO

OBJECTIVE: The National Institutes of Health recommends readability of patient material not exceed sixth-grade level. Our aim was to determine readability of American Urogynecologic Society (AUGS) and International Urogynecological Association (IUGA) patient education documents. METHODS: Available English- and Spanish-language IUGA patient information leaflets and AUGS patient fact sheets were scored for grade reading level. Readability assessment was performed using Flesch-Kincaid, Simple Measure of Gobbledygook, and Fry graph formulas for English documents. For Spanish documents, Fernandez-Huerta and SOL readability formulas were utilized. Each document was assessed by a health literacy expert using standards of plain language best practices. RESULTS: We assessed 86 documents: 18 AUGS, 34 IUGA, and 34 IUGA Spanish documents. Readability combined scores for English AUGS documents ranged from 8th to 12th grade level equivalents, whereas English IUGA documents ranged from 7th to 13th. Combined average readability score for AUGS sheets was 9.9 ± 1.2 grade level equivalents versus 10.5 ± 1.3 for IUGA leaflets. The AUGS documents had lower grade level equivalents on all 3 readability scales. Spanish-language IUGA leaflets had an average readability score of 5.9 ± 0.6 grade level equivalents, with a range of fifth to seventh. Health literacy expert analysis found only 1 document met all the criteria for plain language best practice. CONCLUSIONS: All assessed AUGS and IUGA patient information English documents had readability scores above National Institutes of Health-recommended reading level. Spanish IUGA documents were written at a lower reading level than their English counterparts. To best meet patient education needs, future materials development should emphasize readability and utilization of plain language best practices.


Assuntos
Compreensão , Ginecologia , Educação de Pacientes como Assunto , Materiais de Ensino/normas , Urologia , Feminino , Guias como Assunto , Humanos , Idioma , Folhetos , Sociedades Médicas
9.
J Sports Med Phys Fitness ; 59(5): 798-807, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30293404

RESUMO

BACKGROUND: There is currently no information on the lifetime diet of ultra-endurance exercisers. This study describes changes in diet across the lifetime of current ultra-endurance exercisers and the relationship between diet and physical activity (specifically ultra-endurance exercise [UEE]). METHODS: Lifetime physical activity and diet were assessed in current ultra-endurance exercisers (N.=120; ages 21-74 years) over six life periods (5-12, 13-18, 19-30, 31-45, 46-60, 61-75 years). Using the life period having the largest absolute increase in UEE (IUEE), diet was assessed according to food category scores and dietary patterns. Changes in lifetime diet were described by comparing food category scores between adjacent life periods. Differences in food category scores were investigated between the life period for each IUEE group and the preceding life period and associations between dietary patterns and UEE were investigated within each IUEE group. Relationships between lifetime diet and UEE were investigated by examining associations between lifetime food category scores and lifetime UEE. RESULTS: The participant group had significant increases in all food category scores from 13-18 to 19-30 years and significant decreases in all food category scores from 19-30 to 31-45 years. UEE correlated negatively with the Western style dietary pattern in the IUEE19-30 group and positively with the fruit and vegetable dietary pattern in the IUEE31-45 group. There was a positive correlation between lifetime UEE and lifetime vegetables and fruit category scores. CONCLUSIONS: The ultra-endurance exercisers in this study exhibited changes in diet similar to general populations, which appear to reflect typical nutritional requirements across the lifespan.


Assuntos
Dieta/tendências , Exercício Físico , Resistência Física , Adolescente , Adulto , Idoso , Criança , Estudos Transversais , Feminino , Frutas , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Esportes , Inquéritos e Questionários , Verduras , Adulto Jovem
10.
Nutrients ; 10(10)2018 Oct 16.
Artigo em Inglês | MEDLINE | ID: mdl-30332744

RESUMO

Choline, an essential dietary nutrient for humans, is required for the synthesis of the neurotransmitter, acetylcholine, the methyl group donor, betaine, and phospholipids; and therefore, choline is involved in a broad range of critical physiological functions across all stages of the life cycle. The current dietary recommendations for choline have been established as Adequate Intakes (AIs) for total choline; however, dietary choline is present in multiple different forms that are both water-soluble (e.g., free choline, phosphocholine, and glycerophosphocholine) and lipid-soluble (e.g., phosphatidylcholine and sphingomyelin). Interestingly, the different dietary choline forms consumed during infancy differ from those in adulthood. This can be explained by the primary food source, where the majority of choline present in human milk is in the water-soluble form, versus lipid-soluble forms for foods consumed later on. This review summarizes the current knowledge on dietary recommendations and assessment methods, and dietary choline intake from food sources across the life cycle.


Assuntos
Colina/análise , Desenvolvimento Humano/efeitos dos fármacos , Necessidades Nutricionais , Acetilcolina/biossíntese , Adulto , Betaína/metabolismo , Colina/administração & dosagem , Colina/química , Dieta/métodos , Ingestão de Alimentos , Humanos , Lactente , Leite Humano/química , Fosfolipídeos/biossíntese
12.
J Rheumatol ; 45(10): 1426-1439, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30173152

RESUMO

OBJECTIVE: To develop recommendations for the assessment of people with systemic lupus erythematosus (SLE) in Canada. METHODS: Recommendations were developed using the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) approach. The Canadian SLE Working Group (panel of Canadian rheumatologists and a patient representative from Canadian Arthritis Patient Alliance) was created. Questions for recommendation development were identified based on the results of a previous survey of SLE practice patterns of members of the Canadian Rheumatology Association. Systematic literature reviews of randomized trials and observational studies were conducted. Evidence to Decision tables were prepared and presented to the panel at 2 face-to-face meetings and online. RESULTS: There are 15 recommendations for assessing and monitoring SLE, with varying applicability to adult and pediatric patients. Three recommendations focus on diagnosis, disease activity, and damage assessment, suggesting the use of a validated disease activity score per visit and annual damage score. Strong recommendations were made for cardiovascular risk assessment and measuring anti-Ro and anti-La antibodies in the peripartum period and conditional recommendations for osteoporosis and osteonecrosis. Two conditional recommendations were made for peripartum assessments, 1 for cervical cancer screening and 2 for hepatitis B and C screening. A strong recommendation was made for annual influenza vaccination. CONCLUSION: These are considered the first guidelines using the GRADE method for the monitoring of SLE. Existing evidence is largely of low to moderate quality, resulting in more conditional than strong recommendations. Additional rigorous studies and special attention to pediatric SLE populations and patient preferences are needed.


Assuntos
Diretrizes para o Planejamento em Saúde , Lúpus Eritematoso Sistêmico/diagnóstico , Lúpus Eritematoso Sistêmico/terapia , Programas de Rastreamento , Adulto , Canadá , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/etiologia , Criança , Feminino , Pessoal de Saúde , Hepatite C/diagnóstico , Hepatite C/etiologia , Humanos , Infecções/diagnóstico , Infecções/etiologia , Lúpus Eritematoso Sistêmico/complicações , Masculino , Osteonecrose/diagnóstico , Osteonecrose/etiologia , Osteoporose/diagnóstico , Osteoporose/etiologia , Período Periparto/sangue , Gravidez , Reumatologistas , Medição de Risco , Índice de Gravidade de Doença , Revisões Sistemáticas como Assunto , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/etiologia , Vacinação
13.
Clin Biochem ; 60: 77-83, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30125545

RESUMO

BACKGROUND: Plasma concentrations of choline and its metabolites might serve as biomarkers for the health outcomes of several pathological states such as cardiovascular disease and cancer. However, information about the reliability of biomarkers of choline status is limited. We investigated biological variations in repeated measures of choline and metabolites in healthy adults to assess them as biomarkers. METHODS: Blood samples were collected after an overnight fast at three-time points 12 days apart from 40 adults (mean age, 33 y; male, n = 21). A subset (n = 19; [male, n = 8]) provided one additional sample after a breakfast meal. Plasma free choline, betaine and dimethylglycine were measured using liquid chromatography-tandem mass spectrometry, and plasma phosphatidylcholine, sphingomyelin and lysophosphatidylcholine were measured using high-performance liquid chromatography. RESULTS: The biological variations observed for choline and metabolites were ≤ 13% for adult fasting samples. This corresponded to intra-class correlations (ICC) that ranged from 0.593 to 0.770 for fasting values for choline and metabolites. A similar ICC range was also obtained between fasting and post-prandial states. Although most post-prandial concentrations of choline and metabolites were significantly higher (P < .05) than fasting, all fell within a calculated reference interval. The participants were correctly classified in tertiles for fasting and post-prandial states for choline (68%) and metabolites (range = 32% phosphatidylcholine and 79% for sphingomyelin). CONCLUSIONS: These findings indicate that biological variations of choline and metabolites are low in healthy adults and values from a single blood sample can be used as a biomarker. However, choosing phosphatidylcholine as a biomarker is less reliable.


Assuntos
Biomarcadores/sangue , Colina/sangue , Adulto , Colina/metabolismo , Cromatografia Líquida de Alta Pressão , Jejum , Feminino , Humanos , Masculino , Período Pós-Prandial , Reprodutibilidade dos Testes
14.
Circ Cardiovasc Qual Outcomes ; 11(7): e004420, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-30006474

RESUMO

BACKGROUND: The efficacy of internet-based interventions to improve hypertension management is not established. We evaluated the therapeutic benefit of e-counseling by adapting best evidence guidelines for behavioral counseling. METHODS AND RESULTS: This multicenter double-blind randomized controlled trial included assessments at baseline, 4 months, and 12 months. Participants were 35 to 74 years of age and diagnosed with hypertension: systolic/diastolic blood pressure (BP) 130 to 180/85 to 110 mm Hg. BP was assessed by automated office measurement. E-Counseling used multimedia and interactive tools to increase motivation and skill for self-care (exercise, diet, medication adherence, and smoking cessation). Control used self-care education. Frequency of contact by our e-platform was equal for both trial arms. Primary end points were change at 4 and 12 months in systolic BP, diastolic BP, pulse pressure, total lipoprotein cholesterol, low-density lipoprotein cholesterol, total lipoprotein cholesterol/high-density lipoprotein cholesterol ratio, non-high-density lipoprotein cholesterol, and Framingham 10-year cardiovascular risk index. Intention-to-treat analysis used generalized linear models adjusted for baseline measures, sex, and medications. Among 264 participants, mean age was 57.6 years (SE, 0.6), 58% were women, with 83% on antihypertensive medications. At 12 months, e-counseling versus control evoked greater reduction in systolic BP (-10.1 mm Hg [95% confidence interval (CI), -12.5, -7.6] versus -6.0 mm Hg [95% CI, -8.5, -3.5]; P=0.02); pulse pressure (-5.2 mm Hg [95% CI, -6.9, -3.5] versus -2.7 mm Hg [95% CI, -4.5, -0.9]; P=0.04), and Framingham risk index (-1.9% [95% CI, -3.3, -0.5] versus -0.02% [95% CI, -1.2, 1.7]; P=0.02), respectively. Among males in e-counseling versus control, 12-month end points included lower diastolic BP (P=0.01), non-high-density lipoprotein cholesterol (P=0.04), total lipoprotein cholesterol (P=0.03), and a trend for total lipoprotein cholesterol/high-density lipoprotein cholesterol ratio (P=0.07). CONCLUSIONS: To our knowledge, this is the first double-blind randomized trial of e-counseling for hypertension. Added benefit for medical therapy was achieved by combining available technology with a clinically organized protocol of motivational and cognitive-behavioral counseling. CLINICAL TRIAL REGISTRATION: https://www.clinicaltrials.gov; Unique identifier: NCT01541540.


Assuntos
Pressão Sanguínea , Terapia Cognitivo-Comportamental/métodos , Aconselhamento/métodos , Hipertensão/terapia , Autocuidado/métodos , Telemedicina/métodos , Adulto , Idoso , Anti-Hipertensivos/uso terapêutico , Canadá , Método Duplo-Cego , Feminino , Comportamentos Relacionados com a Saúde , Conhecimentos, Atitudes e Prática em Saúde , Estilo de Vida Saudável , Humanos , Hipertensão/diagnóstico , Hipertensão/fisiopatologia , Hipertensão/psicologia , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto , Fatores de Risco , Comportamento de Redução do Risco , Fatores de Tempo , Resultado do Tratamento
15.
Clin Ther ; 40(4): 640-657, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29573851

RESUMO

PURPOSE: Evidence supporting the use of dietary supplements, in particular, multivitamin/multimineral supplements (MVMS), has been mixed, complicating the ability of health care professionals to recommend their use. To clarify the role that MVMS can play in supporting human health, a series of consensus statements was developed based on expert opinion. METHODS: A panel of 14 international experts in nutritional science and health care was convened to develop consensus statements related to using MVMS in supporting optimal human health. The modified Delphi process included 2 rounds of remote voting and a final round of voting at a roundtable meeting where evidence summaries were presented and discussed. The level of agreement with each of 9 statements was rated on a 5-point Likert scale: agree strongly; agree with reservation; undecided; disagree; or disagree strongly. Consensus was predefined as ≥80% of the panel agreeing strongly or agreeing with reservation to a given statement. FINDINGS: Consensus was reached for all statements. The panel determined that MVMS can broadly improve micronutrient intakes when they contain at least the micronutrients that are consumed insufficiently or have limited bioavailability within a specified population. MVMS formulations may also be individualized according to age, sex, life cycle, and/or other selected characteristics. There are specific biological processes and health outcomes associated with deficient, inadequate, and adequate micronutrient levels. Adequate intake is necessary for normal biological functioning required for good health; in some instances, higher than recommended micronutrient intakes have the potential to provide additional health benefits. Meeting daily intakes established by dietary reference values should be an explicit public health goal for individuals and populations. Use of MVMS is one approach to ensure that adequate micronutrient needs are met in support of biological functions necessary to maintain health. Long-term use of MVMS not exceeding the upper limit of recommended intakes has been determined to be safe in healthy adults. There is insufficient evidence to indicate that MVMS are effective for the primary prevention of chronic medical conditions, including cardiovascular disease and cancer. However, for certain otherwise healthy subpopulations (eg, pregnant women, older adults) and some individuals with existing medical conditions who experience inadequacies in micronutrient intake, addressing inadequacies by using MVMS can provide health benefits. IMPLICATIONS: This consensus panel has described key issues related to the use of MVMS among individuals at risk of or presenting with inadequacies in micronutrient intake or biomarker status.


Assuntos
Suplementos Nutricionais , Estado Nutricional , Vitaminas/administração & dosagem , Idoso , Disponibilidade Biológica , Doença Crônica , Consenso , Dieta , Feminino , Humanos , Masculino , Gravidez
16.
Female Pelvic Med Reconstr Surg ; 24(2): 115-119, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29474283

RESUMO

OBJECTIVE: The aims of this study are to identify screening, treatment, and referral practices of primary care physicians (PCPs) for patients with pelvic floor disorders (PFDs) and evaluate awareness of the Female Pelvic Medicine and Reconstructive Surgery (FPMRS) subspecialty. METHODS: We conducted a cross-sectional survey of PCPs using a random sample of 1005 American College of Physicians members, stratified by demographic region. Electronic survey content included awareness of FPMRS certification, comfort diagnosing and treating PFDs, and PFD referral patterns for PCPs. RESULTS: The 399 survey respondents were predominately male and of diverse ages, geographic distribution, and experience level.Forty-eight percent were aware of the FPMRS subspecialty, 31% of FPMRS board certification, and 25% of American Urogynecologic Society. Less than one third screened for PFDs, only two thirds were comfortable diagnosing urinary complaints, and even fewer felt comfortable diagnosing pelvic organ prolapse and fecal incontinence (FI).Eighty-five percent recommended pelvic floor exercises for stress urinary incontinence and referred to urology (29%) or FPMRS (25%) as second-line therapy, whereas 55% recommended medication/fiber for FI and referred to gastroenterology/colorectal surgery (31%) and FPMRS (2%) as second-line therapy.Primary care physicians referred to colorectal surgery for FI (60%), to Ob/Gyn for obstetric anal sphincter injury (38%) and pelvic organ prolapse (57%), and to urology for microscopic hematuria (80%), overactive bladder (60%), recurrent urinary tract infection (75%), stress urinary incontinence (48%), and voiding dysfunction (84%). CONCLUSIONS: Most PCPs do not routinely screen for PFDs, and fewer feel comfortable treating. The majority is unaware of FPMRS and American Urogynecologic Society and more commonly refers PFD patients to other specialists.


Assuntos
Distúrbios do Assoalho Pélvico/terapia , Médicos de Atenção Primária/estatística & dados numéricos , Padrões de Prática Médica/estatística & dados numéricos , Adulto , Idoso , Canal Anal/lesões , Cirurgia Colorretal/estatística & dados numéricos , Estudos Transversais , Diagnóstico Precoce , Utilização de Instalações e Serviços , Feminino , Procedimentos Cirúrgicos em Ginecologia/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Complicações do Trabalho de Parto/terapia , Gravidez , Encaminhamento e Consulta/estatística & dados numéricos , Estados Unidos , Bexiga Urinária Hiperativa/terapia , Incontinência Urinária por Estresse/terapia
17.
Am J Case Rep ; 18: 1095-1098, 2017 Oct 13.
Artigo em Inglês | MEDLINE | ID: mdl-29026065

RESUMO

BACKGROUND A case report of urethral diverticulum complicating pregnancy is presented. The diagnosis and management are challenging because of the rare nature of this condition, the varied presentations and differential diagnoses, and the possibility of misdiagnosis. CASE REPORT A 25-year-old primigravida with scheduled induction of labor at 39 weeks gestation due to gestational diabetes mellitus presented for a routine antenatal appointment at 38 weeks and four days. On digital cervical examination, she was found to have a large semi-solid anterior vaginal mass, shown by trans-vaginal ultrasound to have a nearly solid appearance of a 5×7 cm mass with septation. Maternal Fetal Medicine and Gynecologic Oncology consultations were obtained primary cesarean section with vaginal biopsy in the Operating Room were recommended. Following an uncomplicated cesarean delivery and with the patient still under spinal anesthesia, the anterior vaginal mass was examined and found to contain 200 ml of purulent material. Because a diagnosis of urethral diverticulum was made, a biopsy was not performed. The patient was placed on antibiotic prophylaxis for the remainder of her hospital course. Follow-up CT scan confirmed a large urethral diverticulum, and she was referred to the Fetal Pelvic Medicine and Reconstructive Surgery (FPMRS) and Urogynecology units for treatment. CONCLUSIONS Early identification of urethral diverticulum during the pregnancy may allow for treatment and a trial of labor with vaginal delivery. MRI is the recommended imaging modality in identifying urethral diverticulum.


Assuntos
Divertículo/diagnóstico por imagem , Doenças Uterinas/diagnóstico por imagem , Adulto , Cesárea , Feminino , Humanos , Gravidez , Complicações na Gravidez/diagnóstico por imagem
18.
Am J Clin Nutr ; 106(1): 233-244, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28490515

RESUMO

Background: Despite a high prevalence of anemia among nonpregnant Cambodian women, current reports suggest that iron deficiency (ID) prevalence is low. If true, iron supplementation will not be an effective anemia reduction strategy.Objective: We measured the effect of daily oral iron with or without multiple micronutrients (MMNs) on hemoglobin concentration in nonpregnant Cambodian women screened as anemic.Design: In this 2 × 2 factorial, double-blind, randomized trial, nonpregnant women (aged 18-45 y) with hemoglobin concentrations ≤117 g/L (capillary blood) were recruited from 26 villages in Kampong Chhnang province and randomly assigned to receive 12 wk of iron (60 mg; Fe group), MMNs (14 other micronutrients; MMN group), iron plus MMNs (Fe+MMN group), or placebo capsules. A 2 × 2 factorial intention-to-treat analysis with the use of a generalized mixed-effects model was used to assess the effects of iron and MMNs and the interaction between these factors. Results: In July 2015, 809 women were recruited and 760 (94%) completed the trial. Baseline anemia prevalence was 58% (venous blood). Mean (95% CI) hemoglobin concentrations at 12 wk in the Fe, MMN, Fe+MMN, and placebo groups were 121 (120, 121), 116 (116, 117), 123 (122, 123), and 116 (116, 117) g/L, with no iron × MMN interaction (P = 0.66). Mean (95% CI) increases in hemoglobin were 5.6 g/L (3.8, 7.4 g/L) (P < 0.001) among women who received iron (n = 407) and 1.2 g/L (-0.6, 3.0 g/L) (P = 0.18) among women who received MMNs (n = 407). The predicted proportions (95% CIs) of women with a hemoglobin response (≥10 g/L at 12 wk) were 19% (14%, 24%), 9% (5%, 12%), 30% (24%, 35%), and 5% (2%, 9%) in the Fe, MMN, Fe+MMN, and placebo groups, respectively.Conclusions: Daily iron supplementation for 12 wk increased hemoglobin in nonpregnant Cambodian women; however, MMNs did not confer additional significant benefit. Overall, ∼24% of women who received iron responded after 12 wk; even fewer would be likely to respond in the wider population. This trial was registered at clinicaltrials.gov as NCT02481375.


Assuntos
Anemia/tratamento farmacológico , Suplementos Nutricionais , Hemoglobinas/metabolismo , Ferro da Dieta/uso terapêutico , Ferro/uso terapêutico , Micronutrientes/uso terapêutico , Adolescente , Adulto , Fatores Etários , Anemia/epidemiologia , Anemia Ferropriva/tratamento farmacológico , Camboja/epidemiologia , Método Duplo-Cego , Feminino , Humanos , Ferro/farmacologia , Ferro da Dieta/farmacologia , Micronutrientes/farmacologia , Pessoa de Meia-Idade , Reprodução , Complexo Vitamínico B/farmacologia , Adulto Jovem
19.
BMC Public Health ; 17(1): 352, 2017 04 24.
Artigo em Inglês | MEDLINE | ID: mdl-28438202

RESUMO

BACKGROUND: Few studies have evaluated the effect of adherence to a lifestyle intervention on adolescent health outcomes. The objective of this study was to determine whether adolescent and parental adherence to components of an e-health intervention resulted in change in adolescent body mass index (BMI) and waist circumference (WC) z-scores in a sample of overweight/obese adolescents. METHODS: In total, 159 overweight/obese adolescents and their parents participated in an 8-month e-health lifestyle intervention. Each week, adolescents and their parents were asked to login to their respective website and to monitor their dietary, physical activity, and sedentary behaviours. We examined participation (percentage of webpages viewed [adolescents]; number of weeks logged in [parents]) and self-monitoring (number of weeks behaviors were tracked) rates. Linear mixed models and multiple regressions were used to examine change in adolescent BMI and WC z-scores and predictors of adolescent participation and self-monitoring, respectively. RESULTS: Adolescents and parents completed 28% and 23%, respectively, of the online component of the intervention. Higher adolescent participation rate was associated with a decrease in the slope of BMI z-score but not with change in WC z-score. No association was found between self-monitoring rate and change in adolescent BMI or WC z-scores. Parent participation was not found to moderate the relationship between adolescent participation and weight outcomes. CONCLUSIONS: Developing strategies for engaging and promoting supportive interactions between adolescents and parents are needed in the e-health context. Findings demonstrate that improving adolescents' adherence to e-health lifestyle intervention can effectively alter the weight trajectory of overweight/obese adolescents.


Assuntos
Estilo de Vida , Obesidade/terapia , Pais , Educação de Pacientes como Assunto/métodos , Telemedicina/métodos , Adolescente , Terapia Comportamental , Índice de Massa Corporal , Criança , Dieta , Exercício Físico , Feminino , Humanos , Internet , Masculino , Cooperação do Paciente , Circunferência da Cintura , Redução de Peso
20.
Arch Phys Med Rehabil ; 98(6): 1195-1202, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28219685

RESUMO

OBJECTIVE: To describe the systematic development of the Stroke Coach, a theory- and evidence-based intervention to improve control of lifestyle behavior risk factors in patients with stroke. DESIGN: Intervention development. SETTING: Community. PARTICIPANTS: Individuals who have had a stroke. INTERVENTIONS: We used intervention mapping to guide the development of the Stroke Coach. Intervention mapping is a systematic process used for intervention development and composed of steps that progress from the integration of theory and evidence to the organization of realistic strategies to facilitate the development of a practical intervention supported by empirical evidence. Social cognitive theory was the underlying premise for behavior change, whereas control theory methods were directed toward sustaining the changes to ensure long-term health benefits. Practical evidence-based strategies were linked to behavioral determinants to improve stroke risk factor control. MAIN OUTCOME MEASURES: Not applicable. RESULTS: The Stroke Coach is a patient-centered, community-based, telehealth intervention to promote healthy lifestyles after stroke. Over 6 months, participants receive seven 30- to 60-minute telephone sessions with a lifestyle coach who provides education, facilitates motivation for lifestyle modification, and empowers participants to self-management their stroke risk factors. Participants also receive a self-management manual and a self-monitoring kit. CONCLUSIONS: Through the use of intervention mapping, we developed a theoretically sound and evidence-grounded intervention to improve risk factor control in patients with stroke. If empirical evaluation of the Stroke Coach produces positive results, the next step will be to develop an implementation intervention to ensure successful uptake and delivery of the program in community and outpatient settings.


Assuntos
Aconselhamento/métodos , Promoção da Saúde/organização & administração , Estilo de Vida , Reabilitação do Acidente Vascular Cerebral/métodos , Telemedicina/organização & administração , Índice de Massa Corporal , Serviços de Saúde Comunitária/organização & administração , Dieta , Exercício Físico , Humanos , Assistência Centrada no Paciente/organização & administração , Desenvolvimento de Programas , Fatores de Risco , Comportamento de Redução do Risco , Autocuidado , Reabilitação do Acidente Vascular Cerebral/psicologia
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