Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 28
Filter
1.
J Clin Oncol ; 41(9): 1664-1669, 2023 03 20.
Article in English | MEDLINE | ID: mdl-36399695

ABSTRACT

Clinical trials frequently include multiple end points that mature at different times. The initial report, typically based on the primary end point, may be published when key planned co-primary or secondary analyses are not yet available. Clinical Trial Updates provide an opportunity to disseminate additional results from studies, published in JCO or elsewhere, for which the primary end point has already been reported.In the primary analysis of the global phase II ELIANA trial (ClinicalTrials.gov identifier: NCT02435849), tisagenlecleucel provided an overall remission rate of 81% in pediatric and young adult patients with relapsed or refractory B-cell acute lymphoblastic leukemia (R/R B-ALL), with 59% of responders remaining relapse-free at 12 months. Here, we report an update on efficacy, safety, and patient-reported quality of life in 79 pediatric and young adult patients with R/R B-ALL following a median follow-up of 38.8 months. The overall remission rate was 82%. The median event-free survival was 24 months, and the median overall survival was not reached. Event-free survival was 44% (95% CI, 31 to 57) and overall survival was 63% (95% CI, 51 to 73) at 3 years overall (most events occur within the first 2 years). The estimated 3-year relapse-free survival with and without censoring for subsequent therapy was 52% (95% CI, 37 to 66) and 48% (95% CI, 34 to 60), respectively. No new or unexpected long-term adverse events were reported. Grade 3/4 adverse events were reported in 29% of patients > 1 year after infusion; grade 3/4 infection rate did not increase > 1 year after infusion. Patients reported improvements in quality of life up to 36 months after infusion. These findings demonstrate favorable long-term safety and suggest tisagenlecleucel as a curative treatment option for heavily pretreated pediatric and young adult patients with R/R B-ALL.


Subject(s)
Precursor Cell Lymphoblastic Leukemia-Lymphoma , Quality of Life , Child , Humans , Young Adult , Chronic Disease , Precursor Cell Lymphoblastic Leukemia-Lymphoma/therapy , Receptors, Antigen, T-Cell/therapeutic use , Recurrence
2.
J Immunol ; 209(4): 760-771, 2022 08 15.
Article in English | MEDLINE | ID: mdl-35914833

ABSTRACT

Influenza-associated bacterial superinfections have devastating impacts on the lung and can result in increased risk of mortality. New strains of influenza circulate throughout the population yearly, promoting the establishment of immune memory. Nearly all individuals have some degree of influenza memory before adulthood. Due to this, we sought to understand the role of immune memory during bacterial superinfections. An influenza heterotypic immunity model was established using influenza A/Puerto Rico/8/34 and influenza A/X31. We report in this article that influenza-experienced mice are more resistant to secondary bacterial infection with methicillin-resistant Staphylococcus aureus as determined by wasting, bacterial burden, pulmonary inflammation, and lung leak, despite significant ongoing lung remodeling. Multidimensional flow cytometry and lung transcriptomics revealed significant alterations in the lung environment in influenza-experienced mice compared with naive animals. These include changes in the lung monocyte and T cell compartments, characterized by increased expansion of influenza tetramer-specific CD8+ T cells. The protection that was seen in the memory-experienced mouse model is associated with the reduction in inflammatory mechanisms, making the lung less susceptible to damage and subsequent bacterial colonization. These findings provide insight into how influenza heterotypic immunity reshapes the lung environment and the immune response to a rechallenge event, which is highly relevant to the context of human infection.


Subject(s)
Bacterial Infections , Coinfection , Influenza, Human , Methicillin-Resistant Staphylococcus aureus , Orthomyxoviridae Infections , Superinfection , Adult , Animals , CD8-Positive T-Lymphocytes , Humans , Lung , Mice , Mice, Inbred C57BL , Superinfection/microbiology
3.
Menopause ; 29(5): 504-513, 2022 05 01.
Article in English | MEDLINE | ID: mdl-35486944

ABSTRACT

ABSTRACT: Charting the Path to Health in Midlife and Beyond: The Biology and Practice of Wellness was a Translational Science Symposium held on Tuesday, September 21, 2021. Foundational psychosocial and behavioral approaches to promote healthy aging and strategies to disseminate this information were discussed. The following synopsis documents the conversation, describes the state of the science, and outlines a path forward for clinical practice. Wellness, in its broadest sense, prioritizes an orientation toward health, and an embrace of behaviors that will promote it. It involves a journey to improve and maintain physical and mental health and overall well-being to fully engage and live one's best life. It is more about recognizing and optimizing what one can do than what one cannot do and emphasizes the individual's agency over changing what they are able to change. Wellness is therefore not a passive state but rather an active goal to be sought continually. When viewed in this fashion, wellness is accessible to all. The conference addressed multiple aspects of wellness and embraced this philosophy throughout.


Subject(s)
Mental Health , Translational Science, Biomedical , Biology , Humans , Washington
4.
J Pediatr ; 241: 173-180.e1, 2022 02.
Article in English | MEDLINE | ID: mdl-34695449

ABSTRACT

OBJECTIVE: To compare extrahepatic adverse events during fish oil lipid emulsion (FOLE) or soybean oil lipid emulsion (SOLE) treatment in children with intestinal failure-associated liver disease (IFALD). STUDY DESIGN: In this multicenter integrated analysis, bleeding, bronchopulmonary dysplasia (BPD), retinopathy of prematurity (ROP), infections, and signs of lipid emulsion intolerance were compared between FOLE recipients (1 g/kg/d) (n = 189) and historical controls who received SOLE (≤3 g/kg/d) (n = 73). RESULTS: When compared with SOLE recipients, FOLE recipients had a lower gestational age (30.5 vs 33.0 weeks; P = .0350) and higher baseline direct bilirubin (DB) (5.8 vs 3.0 mg/dL; P < .0001). FOLE recipients had a decreased incidence of bleeding (P < .0001), BPD (P < .001), ROP (P < .0156), bacterial and fungal infections (P < .0001), and lipid intolerance signs (P < .02 for all). Patients with bleeding vs patients without bleeding had higher baseline DB; the ORs for baseline DB (by mg/dL) and treatment (FOLE vs SOLE) were 1.20 (95% CI: 1.10, 1.31; P ≤ .0001) and 0.22 (95% CI: 0.11, 0.46; P ≤ .0001), respectively. In preterm infants, a higher BPD (P < .0001) and ROP incidence (P = .0071) was observed in SOLE recipients vs FOLE recipients. CONCLUSIONS: Children with IFALD who received FOLE had fewer extrahepatic adverse events, including a decreased incidence of bleeding, preterm comorbidities, and lipid intolerance signs compared with children with IFALD who received SOLE. TRIAL REGISTRATION CLINICALTRIALS.GOV: NCT00910104 and NCT00738101.


Subject(s)
Fat Emulsions, Intravenous/adverse effects , Fish Oils/adverse effects , Intestinal Failure/therapy , Liver Diseases/etiology , Parenteral Nutrition/adverse effects , Soybean Oil/adverse effects , Fat Emulsions, Intravenous/therapeutic use , Female , Fish Oils/therapeutic use , Humans , Infant , Infant, Newborn , Intestinal Failure/complications , Male , Parenteral Nutrition/methods , Retrospective Studies , Soybean Oil/therapeutic use , Treatment Outcome
5.
J Pediatr ; 233: 112-118.e3, 2021 06.
Article in English | MEDLINE | ID: mdl-33647253

ABSTRACT

OBJECTIVES: To perform a multicenter study to assess growth failure in hospitalized infants with gastroschisis. STUDY DESIGN: This study included neonates with gastroschisis within sites in the University of California Fetal Consortium. The study's primary outcome was growth failure at hospital discharge, defined as a weight or length z score decrease >0.8 from birth. Regression analysis was performed to assess changes in z scores over time. RESULTS: Among 125 infants with gastroschisis, the median gestational age was 37 weeks (IQR 35-37). Length of stay was 32 days (23-60); 55% developed weight or length growth failure at discharge (28% had weight growth failure, 42% had length growth failure, and 15% had both weight and length growth failure). Weight and length z scores at 14 days, 30 days, and discharge were less than birth (P < .01 for all). Weight and length z scores declined from birth to 30 days (-0.10 and -0.11 z score units/week, respectively, P < .001). Length growth failure at discharge was associated with weight and length z score changes over time (P < .05 for both). Lower gestational age was associated with weight growth failure (OR 0.70 for each gestational age week, 95% CI 0.55-0.89, P = .004). CONCLUSIONS: Growth failure, in particular linear growth failure, is common in infants with gastroschisis. These data suggest the need to improve nutritional management in these infants.


Subject(s)
Gastroschisis/epidemiology , Growth Disorders/epidemiology , Body Height , Body Weight , California/epidemiology , Cohort Studies , Female , Humans , Infant, Newborn/growth & development , Male , Prevalence , Retrospective Studies
6.
Arch Pathol Lab Med ; 145(5): 529-535, 2021 05 01.
Article in English | MEDLINE | ID: mdl-33449998

ABSTRACT

CONTEXT.­: This study represents the largest compilation to date of clinical and postmortem data from decedents with coronavirus disease 2019 (COVID-19). It will augment previously published small series of autopsy case reports, refine clinicopathologic considerations, and improve the accuracy of future vital statistical reporting. OBJECTIVE.­: To accurately reflect the preexisting diseases and pathologic conditions of decedents with SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) infection through autopsy. DESIGN.­: Comprehensive data from 135 autopsy evaluations of COVID-19-positive decedents is presented, including histologic assessment. Postmortem examinations were performed by 36 pathologists at 19 medical centers or forensic institutions in the United States and Brazil. Data from each autopsy were collected through the online submission of multiple-choice and open-ended survey responses. RESULTS.­: Patients dying of or with COVID-19 had an average of 8.89 pathologic conditions documented at autopsy, spanning a combination of prior chronic disease and acute conditions acquired during hospitalization. Virtually all decedents were cited as having more than 1 preexisting condition, encompassing an average of 2.88 such diseases each. Clinical conditions during terminal hospitalization were cited 395 times for the 135 autopsied decedents and predominantly encompassed acute failure of multiple organ systems and/or impaired coagulation. Myocarditis was rarely cited. CONCLUSIONS.­: Cause-of-death statements in both autopsy reports and death certificates may not encompass the severity or spectrum of comorbid conditions in those dying of or with COVID-19. If supported by additional research, this finding may have implications for public health decisions and reporting moving forward through the pandemic.


Subject(s)
COVID-19/pathology , Adult , Aged , Aged, 80 and over , Autopsy , Brazil/epidemiology , COVID-19/diagnosis , COVID-19/epidemiology , Cause of Death , Chronic Disease , Comorbidity , Female , Humans , Male , Middle Aged , Pandemics , Surveys and Questionnaires , United States/epidemiology
7.
J Pediatr ; 230: 46-54.e2, 2021 03.
Article in English | MEDLINE | ID: mdl-33038344

ABSTRACT

OBJECTIVE: To compare the aspartate aminotransferase to platelet ratio index, liver transplantation, and mortality rates between children with intestinal failure-associated liver disease who received fish oil lipid emulsion (FOLE) or soybean oil intravenous lipid emulsion (SOLE). STUDY DESIGN: In this multicenter integrated analysis, FOLE recipients (1 g/kg/d) (n = 189) were compared with historical controls administered SOLE (≤3 g/kg/d) (n = 73). RESULTS: Compared with SOLE, FOLE recipients had a higher direct bilirubin level at baseline (5.8 mg/dL vs 3.0 mg/dL; P < .0001). Among FOLE recipients, 65% experienced cholestasis resolution vs 16% of SOLE recipients (P < .0001). The aspartate aminotransferase to platelet ratio index scores improved in FOLE recipients (1.235 vs 0.810 and 0.758, P < .02) but worsened in SOLE recipients (0.540 vs 2.564 and 2.098; P ≤ .0003) when baseline scores were compared with cholestasis resolution and end of study, respectively. Liver transplantation was reduced in FOLE vs SOLE (4% vs 12%; P = .0245). The probability of liver transplantation in relation to baseline direct or conjugated bilirubin (DB) was lower in FOLE vs SOLE recipients (1% vs 9% at DB of 2 mg/dL; 8% vs 35% at DB of 12.87 mg/dL; P = .0022 for both). Death rates were similar (FOLE vs SOLE: 10% vs 14% at DB of 2 mg/dL; 17% vs 23% at a DB of 12.87 mg/dL; P = .36 for both). CONCLUSIONS: FOLE recipients experienced a higher rate of cholestasis resolution, lower aspartate aminotransferase to platelet ratio index, and fewer liver transplants compared with SOLE. This study demonstrates that FOLE may be the preferred parenteral lipid emulsion in children with intestinal failure-associated liver disease when DB reaches 2 mg/dL. TRIAL REGISTRATION: Clinicaltrials.gov: NCT00910104 and NCT00738101.


Subject(s)
Cholestasis/therapy , Fat Emulsions, Intravenous/administration & dosage , Fish Oils/administration & dosage , Parenteral Nutrition, Total/adverse effects , Aspartate Aminotransferases/blood , Case-Control Studies , Cholestasis/etiology , Cholestasis/mortality , Female , Fish Oils/pharmacology , Humans , Infant , Infant, Newborn , Intestinal Diseases/complications , Liver Transplantation/statistics & numerical data , Male , Soybean Oil/administration & dosage , Soybean Oil/adverse effects
9.
J Pediatr ; 219: 98-105.e4, 2020 04.
Article in English | MEDLINE | ID: mdl-32059815

ABSTRACT

OBJECTIVE: To compare growth in children with intestinal failure-associated liver disease (IFALD) who received a fish oil intravenous lipid emulsion (FOLE) to those who received a soybean oil intravenous lipid emulsion (SOLE). STUDY DESIGN: This multisite, retrospective study pair-matched FOLE (n = 82) to SOLE recipients (n = 41) using baseline serum direct bilirubin levels and postmenstrual age. Study subjects received open-label FOLE (1 g/kg/day) until IFALD resolved or parenteral nutrition was stopped. Historical control subjects received SOLE (up to 3 g/kg/day). Growth measures (changes in body weight, height/length, and head circumference), prealbumin, triglycerides, and glucose were compared between groups over time using the Wilcoxon rank-sum test. RESULTS: Although changes in all of the growth measures were similar for both groups (P > .05), FOLE recipients demonstrated an overall improved growth trajectory. After 28 weeks, FOLE recipients had a mean body weight within a z score range of -1 to 1 indicating age-appropriate growth. FOLE recipients consistently had higher prealbumin, lower triglyceride, and more normal glucose concentrations over time compared with SOLE recipients. CONCLUSIONS: Children with IFALD who received FOLE had similar growth and fewer metabolic abnormalities compared with those who received SOLE. TRIAL REGISTRATION: Clinicaltrials.gov: NCT00910104 and NCT00738101.


Subject(s)
Fish Oils/administration & dosage , Growth/drug effects , Intestinal Diseases/therapy , Liver Diseases/therapy , Parenteral Nutrition/methods , Case-Control Studies , Child, Preschool , Energy Intake , Fat Emulsions, Intravenous , Fatty Acids , Female , Humans , Male , Retrospective Studies
10.
Front Genet ; 10: 538, 2019.
Article in English | MEDLINE | ID: mdl-31275353

ABSTRACT

INTRODUCTION: Puerto Ricans, the second largest Latino group in the continental US, are underrepresented in genomic studies of Alzheimer disease (AD). To increase representation of this group in genomic studies of AD, we developed a multisource ascertainment approach to enroll AD patients, and their family members living in Puerto Rico (PR) as part of the Alzheimer's Disease Sequencing Project (ADSP), an international effort to advance broader personalized/precision medicine initiatives for AD across all populations. METHODS: The Puerto Rico Alzheimer Disease Initiative (PRADI) multisource ascertainment approach was developed to recruit and enroll Puerto Rican adults aged 50 years and older for a genetic research study of AD, including individuals with cognitive decline (AD, mild cognitive impairment), their similarly, aged family members, and cognitively healthy unrelated individuals age 50 and up. Emphasizing identification and relationship building with key stakeholders, we conducted ascertainment across the island. In addition to reporting on PRADI ascertainment, we detail admixture analysis for our cohort by region, group differences in age of onset, cognitive level by region, and ascertainment source. RESULTS: We report on 674 individuals who met standard eligibility criteria [282 AD-affected participants (42% of the sample), 115 individuals with mild cognitive impairment (MCI) (17% of the sample), and 277 cognitively healthy individuals (41% of the sample)]. There are 43 possible multiplex families (10 families with 4 or more AD-affected members and 3 families with 3 AD-affected members). Most individuals in our cohort were ascertained from the Metro, Bayamón, and Caguas health regions. Across health regions, we found differences in ancestral backgrounds, and select clinical traits. DISCUSSION: The multisource ascertainment approach used in the PRADI study highlights the importance of enlisting a broad range of community resources and providers. Preliminary results provide important information about our cohort that will be useful as we move forward with ascertainment. We expect that results from the PRADI study will lead to a better understanding of genetic risk for AD among this population.

11.
Mol Aspects Med ; 68: 82-89, 2019 08.
Article in English | MEDLINE | ID: mdl-31306668

ABSTRACT

The present "obesogenic' environment has favored excessive energy intake resulting in the current obesity epidemic and its associated diseases. The epidemic has incentivized scientists to develop novel behavioral and pharmacological strategies that enhance energy expenditure to compensate for excessive energy intake. Although physical activity is effective to increase total energy expenditure, it is insufficient to induce negative energy balance and weight loss. With the discovery of brown adipose tissue (BAT) in adult humans, BAT activation soon emerged as a potential strategy for elevating energy expenditure. BAT is the only tissue that expresses uncoupling protein 1, conferring on this tissue high thermogenic capacity due to a low efficiency for mitochondrial ATP generation. Potential manipulation of BAT mass and activity has fueled the interest in altering whole-body energy balance through increased energy expenditure. Remarkable advances have been made in quantifying the amount and activity of BAT in humans. Many studies have concluded that the amount of active BAT appears insufficient to induce meaningful increases in energy expenditure. Thus, the majority of studies report that BAT activation does not influence body weight and metabolic control in humans. Strategies to increase BAT mass and/or to potentiate BAT activity seem necessary.


Subject(s)
Adipose Tissue, Brown/physiology , Energy Metabolism , Adipose Tissue, Brown/anatomy & histology , Animals , Body Weight , Humans , Models, Biological , Organ Size , Thermogenesis/physiology
12.
PLoS Genet ; 14(12): e1007791, 2018 12.
Article in English | MEDLINE | ID: mdl-30517106

ABSTRACT

The ApoE ε4 allele is the most significant genetic risk factor for late-onset Alzheimer disease. The risk conferred by ε4, however, differs across populations, with populations of African ancestry showing lower ε4 risk compared to those of European or Asian ancestry. The cause of this heterogeneity in risk effect is currently unknown; it may be due to environmental or cultural factors correlated with ancestry, or it may be due to genetic variation local to the ApoE region that differs among populations. Exploring these hypotheses may lead to novel, population-specific therapeutics and risk predictions. To test these hypotheses, we analyzed ApoE genotypes and genome-wide array data in individuals from African American and Puerto Rican populations. A total of 1,766 African American and 220 Puerto Rican individuals with late-onset Alzheimer disease, and 3,730 African American and 169 Puerto Rican cognitively healthy individuals (> 65 years) participated in the study. We first assessed average ancestry across the genome ("global" ancestry) and then tested it for interaction with ApoE genotypes. Next, we assessed the ancestral background of ApoE alleles ("local" ancestry) and tested if ancestry local to ApoE influenced Alzheimer disease risk while controlling for global ancestry. Measures of global ancestry showed no interaction with ApoE risk (Puerto Rican: p-value = 0.49; African American: p-value = 0.65). Conversely, ancestry local to the ApoE region showed an interaction with the ApoE ε4 allele in both populations (Puerto Rican: p-value = 0.019; African American: p-value = 0.005). ApoE ε4 alleles on an African background conferred a lower risk than those with a European ancestral background, regardless of population (Puerto Rican: OR = 1.26 on African background, OR = 4.49 on European; African American: OR = 2.34 on African background, OR = 3.05 on European background). Factors contributing to the lower risk effect in the ApoE gene ε4 allele are likely due to ancestry-specific genetic factors near ApoE rather than non-genetic ethnic, cultural, and environmental factors.


Subject(s)
Alzheimer Disease/genetics , Apolipoprotein E4/genetics , Black or African American/genetics , Hispanic or Latino/genetics , Aged , Aged, 80 and over , Case-Control Studies , Female , Gene Frequency , Genetic Variation , Genetics, Population , Genome-Wide Association Study , Humans , Male , Puerto Rico/ethnology , Risk Factors
13.
Am J Trop Med Hyg ; 98(3): 824-834, 2018 03.
Article in English | MEDLINE | ID: mdl-29363448

ABSTRACT

Low adoption and compliance levels for household water treatment and safe storage (HWTS) technologies have made it challenging for these systems to achieve measurable health benefits in the developing world. User compliance remains an inconsistently defined and poorly understood feature of HWTS programs. In this article, we develop a comprehensive approach to understanding HWTS compliance. First, our Safe Drinking Water Compliance Framework disaggregates and measures the components of compliance from initial adoption of the HWTS to exclusive consumption of treated water. We apply this framework to an ultraviolet (UV)-based safe water system in a cluster-randomized controlled trial in rural Mexico. Second, we evaluate a no-frills (or "Basic") variant of the program as well as an improved (or "Enhanced") variant, to test if subtle changes in the user interface of HWTS programs could improve compliance. Finally, we perform a full-cost analysis of both variants to assess their cost effectiveness (CE) in achieving compliance. We define "compliance" strictly as the habit of consuming safe water. We find that compliance was significantly higher in the groups where the UV program variants were rolled out than in the control groups. The Enhanced variant performed better immediately postintervention than the Basic, but compliance (and thus CE) degraded with time such that no effective difference remained between the two versions of the program.


Subject(s)
Disinfection/methods , Drinking Water/analysis , Health Knowledge, Attitudes, Practice , Water Purification/methods , Cost-Benefit Analysis , Disinfection/economics , Disinfection/instrumentation , Family Characteristics , Humans , Mexico , Rural Population , Ultraviolet Rays , Water Microbiology , Water Purification/economics , Water Purification/instrumentation , Water Supply/economics , Water Supply/methods
14.
Water Res ; 114: 338-350, 2017 05 01.
Article in English | MEDLINE | ID: mdl-28279879

ABSTRACT

Intermittent drinking water supply is common in low- and middle-income countries throughout the world and can cause water quality to degrade in the distribution system. In this study, we characterized water quality in one study zone with continuous supply and three zones with intermittent supply in the drinking water distribution network in Arraiján, Panama. Low or zero pressures occurred in all zones, and negative pressures occurred in the continuous zone and two of the intermittent zones. Despite hydraulic conditions that created risks for backflow and contaminant intrusion, only four of 423 (0.9%) grab samples collected at random times were positive for total coliform bacteria and only one was positive for E. coli. Only nine of 496 (1.8%) samples had turbidity >1.0 NTU and all samples had ≥0.2 mg/L free chlorine residual. In contrast, water quality was often degraded during the first-flush period (when supply first returned after an outage). Still, routine and first-flush water quality under intermittent supply was much better in Arraiján than that reported in a previous study conducted in India. Better water quality in Arraiján could be due to better water quality leaving the treatment plant, shorter supply outages, higher supply pressures, a more consistent and higher chlorine residual, and fewer contaminant sources near pipes. The results illustrate that intermittent supply and its effects on water quality can vary greatly between and within distribution networks. The study also demonstrated that monitoring techniques designed specifically for intermittent supply, such as continuous pressure monitoring and sampling the first flush, can detect water quality threats and degradation that would not likely be detected with conventional monitoring.


Subject(s)
Escherichia coli , Water Quality , Chlorine , Drinking Water/microbiology , Water Microbiology , Water Supply
15.
Am J Clin Nutr ; 103(2): 366-74, 2016 Feb.
Article in English | MEDLINE | ID: mdl-26718418

ABSTRACT

BACKGROUND: Mexican immigrants are disproportionally affected by diet-related risk of metabolic dysfunction. Whether adhering to a traditional Mexican diet or adopting a US diet contributes to metabolic changes associated with future risk of type 2 diabetes and other chronic diseases has not been investigated. OBJECTIVE: The purpose of this study was to test in a randomized crossover feeding trial the metabolic responses to a Mexican diet compared with a commonly consumed US diet. DESIGN: First- and second-generation healthy women of Mexican descent (n = 53) were randomly assigned in a crossover design to consume a Mexican or US diet for 24 d each, separated by a 28-d washout period. Diets were eucaloric and similar in macronutrient composition. The metabolic responses to diets were assessed by measuring fasting serum concentrations of glucose, insulin, insulin-like growth factor 1 (IGF-1), insulin-like growth factor binding protein 3 (IGFBP-3), adiponectin, C-reactive protein (CRP), and interleukin 6 (IL-6), as well as the homeostasis model assessment of insulin resistance (HOMA-IR) at the beginning and end of each period. Linear mixed models tested the intervention effect on the biomarkers, while adjusting for diet sequence, feeding period, baseline and washout biomarker concentrations, age, acculturation, and BMI. RESULTS: Compared with the US diet, the Mexican diet reduced insulin by 14% [geometric means (95% CIs): 9.3 (8.3, 10.3) compared with 8.0 (7.2, 8.9) µU/mL; P = 0.02], HOMA-IR by 15% [2.0 (1.8, 2.3) compared with 1.7 (1.6, 2.0); P = 0.02], and IGFBP-3 by 6% (mean ± SEM: 2420 ± 29 compared with 2299 ± 29 ng/mL; P < 0.01) and tended to reduce circulating concentrations of IGF-1 by 4% (149 ± 2.6 compared with 144 ± 2.5 ng/mL; P = 0.06). There was no significant intervention effect on serum concentrations of glucose, adiponectin, CRP, or IL-6 in the US compared with the Mexican diet. CONCLUSION: Compared with the commonly consumed US diet, the traditional Mexican diet modestly improved insulin sensitivity under conditions of weight stability in healthy women of Mexican descent, while having no impact on biomarkers of inflammation. This trial was registered at clinicaltrials.gov as NCT01369173.


Subject(s)
Acculturation , Diabetes Mellitus, Type 2/etiology , Diet, Western/adverse effects , Diet/adverse effects , Insulin Resistance , Adolescent , Adult , Biomarkers/blood , Cross-Over Studies , Diabetes Mellitus, Type 2/epidemiology , Diabetes Mellitus, Type 2/ethnology , Diabetes Mellitus, Type 2/metabolism , Diet/ethnology , Diet, Western/ethnology , Emigrants and Immigrants , Energy Intake , Female , Humans , Inflammation Mediators/blood , Linear Models , Mexican Americans , Risk , United States/epidemiology , Young Adult
16.
Cell Mol Bioeng ; 9(3): 455-465, 2016 Sep.
Article in English | MEDLINE | ID: mdl-28458726

ABSTRACT

Macrophages become polarized by cues in their environment and this polarization causes a functional change in their behavior. Two main subsets of polarized macrophages have been described. M1, or "classically activated" macrophages, are pro-inflammatory and M2, or "alternatively activated" macrophages, are anti-inflammatory. In this study, we investigated the motility and force generation of primary human macrophages polarized down the M1 and M2 pathways using chemokinesis assays and traction force microscopy on polyacrylamide gels. We found that M1 macrophages are significantly less motile and M2 macrophages are significantly more motile than unactivated M0 macrophages. We also showed that M1 macrophages generate significantly less force than M0 or M2 macrophages. We further found that M0 and M2, but not M1, macrophage force generation is dependent on ROCK signaling, as identified using the chemical inhibitor Y27632. Finally, using the chemical inhibitor blebbistatin, we found that myosin contraction is required for force generation by M0, M1, and M2 macrophages. This study represents the first investigation of the changes in the mechanical motility mechanisms used by macrophages after polarization.

17.
J Nutr ; 145(12): 2732-40, 2015 Dec.
Article in English | MEDLINE | ID: mdl-26491126

ABSTRACT

BACKGROUND: Women of Mexican descent are disproportionally affected by obesity, systemic inflammation, and insulin resistance (IR). Available approaches used to give scores to dietary patterns relative to dietary guidelines may not effectively capture traditional diets of Mexicans, who comprise the largest immigrant group in the United States. OBJECTIVES: We characterized an a priori traditional Mexican diet (MexD) score high in corn tortillas, beans, soups, Mexican mixed dishes (e.g., tamales), fruits, vegetables, full-fat milk, and Mexican cheeses and low in refined grains and added sugars and evaluated the association of the MexD score with systemic inflammation and IR in 493 postmenopausal participants in the Women's Health Initiative (WHI) who are of Mexican ethnic descent. METHODS: The MexD score was developed from the baseline (1993-1998) WHI food frequency questionnaire, which included Hispanic foods and was available in Spanish. Body mass index (BMI) was computed from baseline measured weight and height, and ethnicity was self-reported. Outcome variables were high sensitivity C-reactive protein (hsCRP), glucose, insulin, homeostasis model assessment of insulin resistance (HOMA-IR), and triglyceride concentrations measured at follow-up (2012-2013). Multivariable linear and logistic regression models were used to test the associations of the MexD score with systemic inflammation and IR. RESULTS: The mean ± SD MexD score was 5.8 ± 2.1 (12 maximum points) and was positively associated with intakes of carbohydrates, vegetable protein, and dietary fiber and inversely associated with intakes of added sugars and total fat (P < 0.01). Women with high compared with low MexD scores, consistent with a more-traditional Mexican diet, had 23% and 15% lower serum hsCRP (P < 0.05) and insulin concentrations, respectively (P < 0.05). Baseline BMI modified these associations such that lower MexD scores were associated with higher insulin and HOMA-IR in overweight/obese women (P-interaction <0.05). CONCLUSION: These findings suggest that greater adherence to a traditional Mexican diet could help reduce the future risk of systemic inflammation and IR in women of Mexican descent.


Subject(s)
Diet/ethnology , Inflammation/epidemiology , Insulin Resistance , Mexican Americans , Women's Health , Aged , Body Mass Index , C-Reactive Protein/analysis , Culture , Diet Records , Dietary Carbohydrates/administration & dosage , Dietary Fiber/administration & dosage , Dietary Proteins/administration & dosage , Female , Food , Humans , Inflammation/prevention & control , Insulin/blood , Mexico/ethnology , Middle Aged , Obesity/epidemiology , Obesity/ethnology , Obesity/prevention & control , Postmenopause , Surveys and Questionnaires , United States/epidemiology , Vegetables/chemistry
18.
Water Res ; 85: 74-84, 2015 Nov 15.
Article in English | MEDLINE | ID: mdl-26302217

ABSTRACT

Inconsistent use of household water treatment and safe storage (HWTS) systems reduces their potential health benefits. Ultraviolet (UV) disinfection is more convenient than some existing HWTS systems, but it does not provide post-treatment residual disinfectant, which could leave drinking water vulnerable to recontamination. In this paper, using as-treated analyses, we report on the field efficacy of a UV disinfection system at improving household drinking water quality in rural Mexico. We further assess the risk of post-treatment contamination from the UV system, and develop a process-based model to better understand household risk factors for recontamination. This study was part of a larger cluster-randomized stepped wedge trial, and the results complement previously published population-level results of the intervention on diarrheal prevalence and water quality. Based on the presence of Escherichia coli (proportion of households with ≥ 1 E. coli/100 mL), we estimated a risk difference of -28.0% (95% confidence interval (CI): -33.9%, -22.1%) when comparing intervention to control households; -38.6% (CI: -48.9%, -28.2%) when comparing post- and pre-intervention results; and -37.1% (CI: -45.2%, -28.9%) when comparing UV disinfected water to alternatives within the household. We found substantial increases in post-treatment E. coli contamination when comparing samples from the UV system effluent (5.0%) to samples taken from the storage container (21.1%) and drinking glasses (26.0%). We found that improved household infrastructure, additional extractions from the storage container, additional time from when the storage container was filled, and increased experience of the UV system operator were associated with reductions in post-treatment contamination. Our results suggest that the UV system is efficacious at improving household water quality when used as intended. Promoting safe storage habits is essential for an effective UV system dissemination. The drinking glass appears to represent a small but significant source of recontamination that is likely to impact all HWTS systems.


Subject(s)
Disinfection/instrumentation , Drinking Water/microbiology , Escherichia coli/isolation & purification , Ultraviolet Rays , Water Purification/instrumentation , Water Purification/methods , Disinfection/methods , Family Characteristics , Humans , Mexico , Risk Assessment , Rural Population , Water Microbiology
19.
J Pediatr ; 166(4): 1085-7, 2015 Apr.
Article in English | MEDLINE | ID: mdl-25596104

ABSTRACT

We sought to determine whether childhood wrist circumference predicts insulin resistance in adulthood. Measures were taken in prepubertal children and then approximately 30 years later in the same subjects as adults. Our findings suggest that wrist circumference in childhood is not a predictor of insulin resistance in adulthood.


Subject(s)
Anthropometry/methods , Insulin Resistance/physiology , Wrist/anatomy & histology , Adult , Age Factors , Body Mass Index , Child , Female , Humans , Linear Models , Male , Prognosis , Risk Factors
20.
Am J Prev Med ; 48(1): 108-15, 2015 Jan.
Article in English | MEDLINE | ID: mdl-25441236

ABSTRACT

The University of New Mexico Health Sciences Center (UNMHSC) adopted a new Vision to work with community partners to help New Mexico make more progress in health and health equity than any other state by 2020. UNMHSC recognized it would be more successful in meeting communities' health priorities if it better aligned its own educational, research, and clinical missions with their needs. National measures that compare states on the basis of health determinants and outcomes were adopted in 2013 as part of Vision 2020 target measures for gauging progress toward improved health and health care in New Mexico. The Vision focused the institution's resources on strengthening community capacity and responding to community priorities via pipeline education, workforce development programs, community-driven and community-focused research, and community-based clinical service innovations, such as telehealth and "health extension." Initiatives with the greatest impact often cut across institutional silos in colleges, departments, and programs, yielding measurable community health benefits. Community leaders also facilitated collaboration by enlisting University of New Mexico educational and clinical resources to better respond to their local priorities. Early progress in New Mexico's health outcomes measures and state health ranking is a promising sign of movement toward Vision 2020.


Subject(s)
Community-Institutional Relations , Health Priorities , Healthy People Programs/organization & administration , Social Determinants of Health , Capacity Building/methods , Capacity Building/organization & administration , Capacity Building/standards , Healthy People Programs/methods , Healthy People Programs/standards , Humans , New Mexico , Organizational Case Studies , Universities
SELECTION OF CITATIONS
SEARCH DETAIL