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1.
J Rural Health ; 2024 Jun 02.
Artículo en Inglés | MEDLINE | ID: mdl-38825752

RESUMEN

PURPOSE: To examine racial and gender differences in treatment acceptance and relapse potential among rural residents admitted to a substance use disorder (SUD) treatment program. METHODS: A cross-sectional study using data collected from a sample of 1850 rural residents admitted to a South Carolina state-run SUD treatment center between the years of 2018 and 2020. Chi-square and t-tests were used to compare treatment acceptance and relapse potential by race and gender. Multivariate logistic regression analyses was conducted to further examine the relationship of race and gender with treatment acceptance and relapse potential after adjusting for potential confounding variables. FINDINGS: Approximately 50% of participants were classified as being accepting of their treatment and committed to changing their substance use, and there were no racial or gender differences in the bivariate and multivariate analyses. Approximately 25% of participants were classified as having low/no potential risk for relapsing, and there were no racial or gender differences in the bivariate analysis. However, the adjusted odds ratio of relapsing risk were lower among White compared to Black adults [AOR = 0.49 with 95% CI (0.31-0.77)]. CONCLUSION: This study suggests there are no gender or racial differences in treatment acceptance for SUD but that Black adults are at greater risk of relapsing relative to White adults. Additional research is needed to identify factors that increase Black adults' risk for relapse to inform interventions that can improve SUD treatment outcomes in this population.

2.
Sleep Med Rev ; 77: 101964, 2024 May 29.
Artículo en Inglés | MEDLINE | ID: mdl-38833836

RESUMEN

Sleep has strong inflammatory underpinnings and diet is one of the primary determinants of systemic inflammation. A systematic literature review was conducted to synthesize current research associating dietary inflammatory potential, as measured by the dietary inflammatory index (DII®) or the energy-adjusted DII (E-DII™) and sleep quality and duration. The National Library of Medicine (Medline), Web of Science, and PsycInfo databases were searched through March 2023. Studies must have used the DII/E-DII as the independent variable and sleep outcomes as dependent variables. Study characteristics, based on STROBE guidelines, were scored based on the presence of the recommendation. Out of the initial 14 studies identified, a total of 12 studies were included for data synthesis. In all 12 studies, more anti-inflammatory diets (i.e., low DII/E-DII scores) were associated with better sleep in at least one sleep domain (most often sleep efficiency and wake-after-sleep-onset). Among those studies with more rigorous diet and sleep measurements, such as dietary recalls and actigraphy, associations between DII/E-DII and sleep outcomes were stronger and more consistent compared to studies using primarily subjective assessments. More rigorous measurement of diet and sleep, especially those relating to sleep stage structure, should be considered in future studies with prospective designs.

3.
Ecology ; 105(6): e4318, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38693703

RESUMEN

SNAPSHOT USA is a multicontributor, long-term camera trap survey designed to survey mammals across the United States. Participants are recruited through community networks and directly through a website application (https://www.snapshot-usa.org/). The growing Snapshot dataset is useful, for example, for tracking wildlife population responses to land use, land cover, and climate changes across spatial and temporal scales. Here we present the SNAPSHOT USA 2021 dataset, the third national camera trap survey across the US. Data were collected across 109 camera trap arrays and included 1711 camera sites. The total effort equaled 71,519 camera trap nights and resulted in 172,507 sequences of animal observations. Sampling effort varied among camera trap arrays, with a minimum of 126 camera trap nights, a maximum of 3355 nights, a median 546 nights, and a mean 656 ± 431 nights. This third dataset comprises 51 camera trap arrays that were surveyed during 2019, 2020, and 2021, along with 71 camera trap arrays that were surveyed in 2020 and 2021. All raw data and accompanying metadata are stored on Wildlife Insights (https://www.wildlifeinsights.org/), and are publicly available upon acceptance of the data papers. SNAPSHOT USA aims to sample multiple ecoregions in the United States with adequate representation of each ecoregion according to its relative size. Currently, the relative density of camera trap arrays varies by an order of magnitude for the various ecoregions (0.22-5.9 arrays per 100,000 km2), emphasizing the need to increase sampling effort by further recruiting and retaining contributors. There are no copyright restrictions on these data. We request that authors cite this paper when using these data, or a subset of these data, for publication. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the US Government.


Asunto(s)
Fotograbar , Estados Unidos , Animales , Mamíferos , Ecosistema
4.
Intellect Dev Disabil ; 62(3): 225-240, 2024 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-38802097

RESUMEN

Meaningful progress in improving employment outcomes for people with intellectual and developmental disabilities continues to be elusive, despite 40 years of investment in research, policy, and supports. This article reviews the current state of employment for individuals with intellectual and developmental disabilities (IDD) and describes policy, practice, and individual factors that influence employment outcomes. Research suggests the need for a holistic approach to change that addresses systems-level strategy, policy, and fiscal investment while strengthening individual experiences with employment and related day services. Recommendations address strengthening the implementation of employment policy, developing pathways to employment, and engaging individuals with IDD and, in particular, individuals with diverse social characteristics in reflecting on the quality of their experiences and supports.


Asunto(s)
Discapacidades del Desarrollo , Empleo , Discapacidad Intelectual , Humanos , Discapacidad Intelectual/rehabilitación , Discapacidades del Desarrollo/rehabilitación , Empleos Subvencionados , Política Pública
6.
Nature ; 629(8014): 1142-1148, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38588696

RESUMEN

PARTNER is a prospective, phase II-III, randomized controlled clinical trial that recruited patients with triple-negative breast cancer1,2, who were germline BRCA1 and BRCA2 wild type3. Here we report the results of the trial. Patients (n = 559) were randomized on a 1:1 basis to receive neoadjuvant carboplatin-paclitaxel with or without 150 mg olaparib twice daily, on days 3 to 14, of each of four cycles (gap schedule olaparib, research arm) followed by three cycles of anthracycline-based chemotherapy before surgery. The primary end point was pathologic complete response (pCR)4, and secondary end points included event-free survival (EFS) and overall survival (OS)5. pCR was achieved in 51% of patients in the research arm and 52% in the control arm (P = 0.753). Estimated EFS at 36 months in the research and control arms was 80% and 79% (log-rank P > 0.9), respectively; OS was 90% and 87.2% (log-rank P = 0.8), respectively. In patients with pCR, estimated EFS at 36 months was 90%, and in those with non-pCR it was 70% (log-rank P < 0.001), and OS was 96% and 83% (log-rank P < 0.001), respectively. Neoadjuvant olaparib did not improve pCR rates, EFS or OS when added to carboplatin-paclitaxel and anthracycline-based chemotherapy in patients with triple-negative breast cancer who were germline BRCA1 and BRCA2 wild type. ClinicalTrials.gov ID: NCT03150576 .


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica , Terapia Neoadyuvante , Ftalazinas , Piperazinas , Neoplasias de la Mama Triple Negativas , Adulto , Anciano , Femenino , Humanos , Persona de Mediana Edad , Antraciclinas/uso terapéutico , Antraciclinas/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carboplatino/administración & dosificación , Carboplatino/uso terapéutico , Genes BRCA1 , Genes BRCA2 , Paclitaxel/administración & dosificación , Paclitaxel/uso terapéutico , Respuesta Patológica Completa , Ftalazinas/administración & dosificación , Ftalazinas/uso terapéutico , Piperazinas/administración & dosificación , Piperazinas/uso terapéutico , Supervivencia sin Progresión , Estudios Prospectivos , Análisis de Supervivencia , Factores de Tiempo , Neoplasias de la Mama Triple Negativas/tratamiento farmacológico , Neoplasias de la Mama Triple Negativas/metabolismo , Neoplasias de la Mama Triple Negativas/cirugía , Adolescente , Adulto Joven
7.
Pediatrics ; 153(5)2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38660734

RESUMEN

OBJECTIVES: Respiratory syncytial virus (RSV) is a common pediatric infection, with young infants being at the highest risk of hospitalization and long-term sequela. New preventive agents have been recommended to prevent severe RSV illness in infants, including a vaccine administered during pregnancy. The current rates of recommended vaccination in pregnancy are suboptimal. Our objective was to characterize interest in RSV vaccination during pregnancy among people across the United States who were pregnant or planning to become pregnant. METHODS: In March 2023, we conducted a national cross-sectional online survey of individuals 18 to 45 years old who were currently pregnant or trying to become pregnant on their perceptions of RSV-related illness and intentions to get vaccinated against RSV. We performed logistic regression analyses to determine the odds and predicted proportions of the likelihood of RSV vaccination during pregnancy, controlling for sociodemographic factors. RESULTS: Of 1619 completed surveys, 1528 were analyzed. 54% of respondents indicated that they were "very likely" to get vaccinated against RSV during pregnancy. The perception of RSV as a serious illness was the strongest predictor of vaccination likelihood. In the full regression model, predicted proportions of "very likely" to vaccinate against RSV followed a similar pattern (63% if RSV infection was perceived as serious and likely, 55% if serious and unlikely, 35% if not serious; P < .001). CONCLUSIONS: Raising awareness of RSV infection as likely and potentially serious for infants may be an influential component of targeted communications that promote RSV vaccine uptake during pregnancy.


Asunto(s)
Intención , Infecciones por Virus Sincitial Respiratorio , Vacunas contra Virus Sincitial Respiratorio , Humanos , Femenino , Embarazo , Infecciones por Virus Sincitial Respiratorio/prevención & control , Infecciones por Virus Sincitial Respiratorio/epidemiología , Estudios Transversales , Adulto , Vacunas contra Virus Sincitial Respiratorio/administración & dosificación , Adolescente , Adulto Joven , Estados Unidos , Vacunación/estadística & datos numéricos , Vacunación/psicología , Complicaciones Infecciosas del Embarazo/prevención & control , Persona de Mediana Edad , Masculino
8.
Med Teach ; 46(6): 849-851, 2024 06.
Artículo en Inglés | MEDLINE | ID: mdl-38460502

RESUMEN

BACKGROUND: The transition from medical school to residency is a critical developmental phase; coaching may help students prepare for this role transition. AIMS: We explored whether near-peer coaching could improve a specific workplace skill prior to residency. METHODS: A resident-as-coach program was piloted for the medicine sub-internship, an advanced acting internship rotation. Between March and June 2021, 26 students were assigned a resident coach (n = 16). Resident coaches completed one training session, and student-coach dyads met for one coaching session on 'pre-rounding'- gathering patient data before rounds. The program was evaluated through surveys and focus groups. RESULTS: 20/26 students and 14/16 residents completed the survey. 19/20 students identified a pre-rounding challenge and reported increased pre-rounding efficiency; all committed to one actionable step for improvement. All 16 residents felt their coaching skills improved. In focus groups, students valued the program's focus on honing a relevant skill in a safe, near-peer setting. Residents expressed their intent to incorporate coaching into their future work. CONCLUSIONS: A resident-as-coach model can be effective in preparing students for residency, while concurrently building residents' coaching skills.


Asunto(s)
Internado y Residencia , Estudiantes de Medicina , Internado y Residencia/organización & administración , Humanos , Proyectos Piloto , Estudiantes de Medicina/psicología , Grupos Focales , Tutoría , Competencia Clínica , Grupo Paritario
9.
Rev Med Interne ; 45(4): 187-193, 2024 Apr.
Artículo en Francés | MEDLINE | ID: mdl-38519305

RESUMEN

INTRODUCTION: The life expectancy of ß-thalassemia patients has increased over the last 20 years. In this study, we evaluated the current health status and quality of life of these patients managed in a reference center in Marseille. METHODS: This is a single-center, descriptive study conducted between June and August 2019 in patients over 18 years of age with ß-thalassemia major or intermedia. Clinical and paraclinical data were collected retrospectively and the SF-36 health survey questionnaire was proposed to each patient. RESULTS: 43 of 64 selected patients were included and divided into 2 groups: 35 patients with transfusion-dependent ß-thalassemia and 8 patients with non-transfusion-dependent ß-thalassemia. Liver iron overload is the most frequent complication, present in 80% of transfusion-dependent and 62.5% of non-transfusion-dependent patients. Cardiac iron overload is present only in the transfusion dependent ß-thalassemia group (20%). Hypogonadotropic hypogonadism remains the most common endocrine disorder (41.9%) followed by osteoporosis (37.2%). Among the 31 patients who completed the SF-36 questionnaire, physical and mental quality of life scores were lowered in transfusion dependent (respectively 42.7 and 46.8) as in non-transfusion-dependent patients (respectively 43.8 and 28.9). CONCLUSION: Despite an improvement in medical care, our patients with ß-thalassemia show an alteration in their quality of life that will need to be characterized in the entire French cohort.


Asunto(s)
Estado de Salud , Calidad de Vida , Talasemia beta , Humanos , Talasemia beta/terapia , Talasemia beta/epidemiología , Talasemia beta/complicaciones , Talasemia beta/psicología , Francia/epidemiología , Masculino , Femenino , Adulto , Estudios Retrospectivos , Adulto Joven , Persona de Mediana Edad , Transfusión Sanguínea/estadística & datos numéricos , Sobrecarga de Hierro/epidemiología , Sobrecarga de Hierro/etiología , Encuestas y Cuestionarios , Adolescente
10.
Hosp Pediatr ; 14(4): 272-280, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38449428

RESUMEN

BACKGROUND: Sepsis is responsible for 75 000 pediatric hospitalizations annually, with an associated mortality rate estimated between 11% and 19%. Evidence supports the use of timely fluid resuscitation and antibiotics to decrease morbidity and mortality. Our emergency department did not meet the timeliness goals for fluid and antibiotic administration suggested by the 2012 Surviving Sepsis Campaign. METHODS: In November 2018, we implemented a sepsis response team utilizing a scripted communication tool and a dedicated sepsis supply cart to address timeliness barriers. Performance was evaluated using statistical process control charts. We conducted observations to evaluate adherence to the new process. Our aim was to meet the Surviving Sepsis Campaign's timeliness goals for first fluid and antibiotic administration (20 and 60 minutes, respectively) within 8 months of our intervention. RESULTS: We observed sustained decreases in mean time to fluids. We also observed a shift in the proportion of patients receiving fluids within 20 minutes. No shifts were observed for timely antibiotic administration. CONCLUSIONS: The implementation of a dedicated emergency department sepsis response team with designated roles and responsibilities, directed communication, and easily accessible supplies can lead to improvements in the timeliness of fluid administration in the pediatric population.


Asunto(s)
Sepsis , Humanos , Niño , Estudios Retrospectivos , Sepsis/terapia , Sepsis/tratamiento farmacológico , Antibacterianos/uso terapéutico , Servicio de Urgencia en Hospital , Tiempo de Tratamiento
11.
Adv Biol (Weinh) ; 8(4): e2300633, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38342586

RESUMEN

Ceramides and cardiorespiratory (CR) fitness are both related to cardiovascular diseases. The associations of three blood plasma ceramides (C16:0, C22:0, and C24:0) with CR fitness in the population-based Study of Health in Pomerania (SHIP-START-1; n = 1,102; mean age 50.3 years, 51.5% women) are investigated. In addition, subgroup analysis according to age (

Asunto(s)
Capacidad Cardiovascular , Enfermedades Cardiovasculares , Humanos , Masculino , Femenino , Persona de Mediana Edad , Ceramidas , Biomarcadores , Enfermedades Cardiovasculares/epidemiología
12.
Future Med Chem ; 16(7): 679-688, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38390753

RESUMEN

Background: The scope of the study was to analyze original preclinical studies on the antimicrobial effects of carvacrol and derivatives on the Mycobacterium genus. Materials & methods: According to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement, four databases (PubMed, Web of Science, SCOPUS and EMBASE) were searched. Results: The search retrieved 392 records, of which 11 papers were selected. Heterogeneity in the techniques and mycobacterial targets was observed. Carvacrol demonstrated synergistic antimycobacterial activity with rifampicin against multidrug-resistant Mycobacterium tuberculosis on membranes and biofilms. In silico approaches showed specific targets in mycobacteria, by inhibition and molecular docking assays, on the enzyme chorismate mutase and the heat shock protein 16.3. Conclusion: Carvacrol has been shown to be a scaffold candidate for future molecules with activity against mycobacteria.


Asunto(s)
Mycobacterium tuberculosis , Simulación del Acoplamiento Molecular , Cimenos/farmacología , Antibacterianos/farmacología
13.
PNAS Nexus ; 3(1): pgad451, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38222467

RESUMEN

Dense suspensions exhibit the remarkable ability to switch dynamically and reversibly from a fluid-like to a solid-like, shear-jammed (SJ) state. Here, we show how this transition has important implications for the propensity for forming fractures. We inject air into bulk dense cornstarch suspensions and visualize the air invasion into the opaque material using time-resolved X-ray radiography. For suspensions with cornstarch mass fractions high enough to exhibit discontinuous shear thickening and shear jamming, we show that air injection leads to fractures in the material. For high mass fractions, these fractures grow quasistatically as rough cavities with fractured interfaces. For lower mass fractions, remarkably, the fractures can relax to smooth bubbles that then rise under buoyancy. We show that the onset of the relaxation occurs as the shear rate induced by the air cavity growth decreases below the critical shear rate denoting the onset of discontinuous shear thickening, which reveals a structural signature of the SJ state.

14.
Phys Chem Chem Phys ; 26(4): 2887-2894, 2024 Jan 24.
Artículo en Inglés | MEDLINE | ID: mdl-38054479

RESUMEN

Liquid-liquid phase separation (LLPS) in aerosol particles is important for the climate system due to its potential to impact heterogeneous chemistry, cloud condensation nuclei, and new particle growth. Our group and others have shown a lower separation relative humidity for submicron particles, but whether the suppression is due to thermodynamics or kinetics is unclear. Herein, we characterize the experimental LLPS phase diagram of submicron 2-methylglutaric acid and ammonium sulfate aerosol particles and compare it to that of supermicron-sized particles. Surprisingly, as the equilibration time of submicron-sized aerosol particles was increased from 20 min to 60 min, the experimental phase diagram converges with the results for supermicron-sized particles. Our findings indicate that nucleation kinetics are responsible for the observed lower separation relative humidities in submicron aerosol particles. Therefore, experiments and models that investigate atmospheric processes of organic aerosol particles may need to consider the temporal evolution of aerosol LLPS.

15.
J Biomech Eng ; 146(1)2024 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-37831143

RESUMEN

Mechanical circulatory support (MCS) device therapy is one of the primary treatment options for end-stage heart failure (HF), whereby a mechanical pump is integrated with the failing heart to maintain adequate tissue perfusion. The ISO 14708-5:2020 standard prescribes generic guidelines for nonclinical device evaluation and system performance testing of MCS devices using a mock circulatory loop (MCL). However, the utility of MCLs in premarket regulatory submissions of MCS devices is ambiguous, and the specific disease states that the device is intended to treat are not usually simulated. Hence, we aim to outline the potential of MCLs as a valuable regulatory science tool for characterizing MCS device systems by adequately representing target clinical-use HF conditions on the bench. Target pathophysiologic hemodynamics of HF conditions (i.e., cardiogenic shock (CS), left ventricular (LV) hypertrophy secondary to hypertension, and coronary artery disease), along with a healthy adult at rest and a healthy adult during exercise are provided as recommended test conditions. The conditions are characterized based on LV, aorta, and left atrium pressures using recommended cardiac hemodynamic indices such as systolic, diastolic, and mean arterial pressure, mean cardiac output (CO), cardiac cycle time, and systemic vascular resistance. This study is a first step toward standardizing MCLs to generate well-defined target HF conditions used to evaluate MCS devices.


Asunto(s)
Sistema Cardiovascular , Insuficiencia Cardíaca , Corazón Auxiliar , Humanos , Adulto , Hemodinámica/fisiología , Corazón , Insuficiencia Cardíaca/terapia
16.
Soc Work Health Care ; 63(1): 53-70, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-37970667

RESUMEN

In this article, a communication framework of Connection First is presented to help close the empathy gap in mainstream health care, including palliative and end-of-life care. Expanding beyond biomedicine, Connection First involves rethinking and restructuring business-as-usual in health care. It shifts the typical transactional process during the initial intake session into one that is transformational. Connection First is a structural intervention and skillset comprised of the following elements: disrupting diagnosis, humanizing history, and repairing ruptures. These elements combine to help close the empathy gap in health care during the initial clinical encounter, before intake, and improve outcomes.


Asunto(s)
Empatía , Cuidado Terminal , Humanos , Atención a la Salud , Comunicación , Cuidados Paliativos
17.
Nat Commun ; 14(1): 7809, 2023 Dec 12.
Artículo en Inglés | MEDLINE | ID: mdl-38086838

RESUMEN

Free-ranging cats (Felis catus) are globally distributed invasive carnivores that markedly impact biodiversity. Here, to evaluate the potential threat of cats, we develop a comprehensive global assessment of species consumed by cats. We identify 2,084 species eaten by cats, of which 347 (16.65%) are of conservation concern. Islands contain threefold more species of conservation concern eaten by cats than continents do. Birds, reptiles, and mammals constitute ~90% of species consumed, with insects and amphibians being less frequent. Approximately 9% of known birds, 6% of known mammals, and 4% of known reptile species are identified in cat diets. 97% of species consumed are <5 kg in adult body mass, though much larger species are also eaten. The species accumulation curves are not asymptotic, indicating that our estimates are conservative. Our results demonstrate that cats are extreme generalist predators, which is critical for understanding their impact on ecological systems and developing management solutions.


Asunto(s)
Biodiversidad , Mamíferos , Animales , Gatos , Ecosistema , Dieta , Reptiles , Aves
18.
Support Care Cancer ; 31(12): 705, 2023 Nov 17.
Artículo en Inglés | MEDLINE | ID: mdl-37975923

RESUMEN

PURPOSE: Bright light therapy holds promise for reducing common symptoms, e.g., fatigue, experienced by individuals with cancer. This study aimed to examine the effects of a chronotype-tailored bright light intervention on sleep disturbance, fatigue, depressive mood, cognitive dysfunction, and quality of life among post-treatment breast cancer survivors. METHODS: In this two-group randomized controlled trial (NCT03304587), participants were randomized to receive 30-min daily bright blue-green light (12,000 lx) or dim red light (5 lx) either between 19:00 and 20:00 h or within 30 min of waking in the morning. Self-reported outcomes and in-lab overnight polysomnography sleep study were assessed before (pre-test) and after the 14-day light intervention (post-test). RESULTS: The sample included 30 women 1-3 years post-completion of chemotherapy and/or radiation for stage I to III breast cancer (mean age = 52.5 ± 8.4 years). There were no significant between-group differences in any of the symptoms or quality of life (all p > 0.05). However, within each group, self-reported sleep disturbance, fatigue, depressive mood, cognitive dysfunction, and quality of life-related functioning showed significant improvements over time (all p < 0.05); the extent of improvement for fatigue and depressive mood was clinically relevant. Polysomnography sleep findings showed that a number of awakenings significantly decreased (p = 0.011) among participants who received bright light, while stage 2 sleep significantly increased (p = 0.015) among participants who received dim-red light. CONCLUSION: The findings support using light therapy to manage post-treatment symptoms in breast cancer survivors. The unexpected symptom improvements among dim-red light controls remain unexplained and require further investigation. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT03304587, October 19, 2017.


Asunto(s)
Neoplasias de la Mama , Supervivientes de Cáncer , Humanos , Femenino , Adulto , Persona de Mediana Edad , Neoplasias de la Mama/complicaciones , Neoplasias de la Mama/terapia , Supervivientes de Cáncer/psicología , Cronotipo , Calidad de Vida , Fatiga/etiología , Fatiga/terapia , Fototerapia
19.
Front Physiol ; 14: 1266409, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37908333

RESUMEN

The study objective was to evaluate the interaction between corticotrophin releasing factor (CRF) receptor signaling and prophylactic antibiotic administration on intestinal physiology in newly weaned and transported pigs. Pigs (n = 56; 5.70 ± 1.05 kg) were weaned (20.49 ± 0.64 d), a blood sample was taken, and then pigs were given an intraperitoneal injection of saline (SAL; n = 28 pigs) or a CRF receptor antagonist (CRFA; n = 28 pigs; 30 µg/kg body weight; Astressin B), and then were transported in a livestock trailer for 12 h and 49 min. A second and third intraperitoneal injection was given at 4 h 42 min and 11 h 36 min into the transport process, respectively. Following transport, 4 SAL and 4 CRFA pigs were blood sampled and euthanized. The remaining 48 pigs were individually housed and given dietary antibiotics [AB; n = 12 SAL and 12 CRFA pigs; chlortetracycline (441 ppm) + tiamulin (38.6 ppm)] or no dietary antibiotics (NAB; n = 12 SAL and 12 CRFA pigs) for 14 d post-transport. Blood was collected at 12 h and on d 3, 7, and 14, and then pigs were euthanized on d 7 (n = 24) and d 14 (n = 24) post-weaning and transport. Circulating cortisol was reduced (p = 0.05) in CRFA pigs when compared to SAL pigs post-weaning and transport. On d 7, jejunal villus height and crypt depth was greater overall (p < 0.05) in AB-fed pigs versus NAB-fed pigs. On d 14, ileal crypt depth was reduced (p = 0.02) in CRFA pigs when compared to SAL pigs. Jejunal CRF mRNA abundance tended to be reduced (p = 0.09) on d 7 in CRFA pigs versus SAL pigs. On d 14, jejunal tumor necrosis factor-alpha was reduced (p = 0.01) in AB-fed pigs versus NAB-fed pigs. On d 7, change in glucose short-circuit current tended to be increased (p = 0.07) in CRFA pigs fed the AB diet when compared to CRFA pigs fed the NAB diet. In conclusion, CRFA pigs and pigs fed AB had some similar biological intestinal function measures post-weaning and transport.

20.
Environ Monit Assess ; 195(11): 1398, 2023 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-37910273

RESUMEN

As climate change strains the world's freshwater resources, access to safe and clean water becomes limited. The use of alternative water sources, such as rooftop-harvested rainwater, has become one mechanism to address freshwater scarcity in the American Southwest, particularly when it comes to home gardening. The University of Arizona's Project Harvest, in partnership with the Sonora Environmental Research Institute, Inc., is a multi-year, co-created citizen science project aimed at increasing current understanding of harvested rainwater quality. Citizens in four Arizona, USA, communities (Hayden/Winkelman, Globe/Miami, Dewey-Humboldt, and Tucson) submitted harvested rainwater samples over 3 years. The harvested rainwater samples were then analyzed using IDEXX Colilert® for total coliforms and E. coli and using Hach PathoScreen™ test for sulfate-reducing bacteria (SRB). This study design allows for the validation of a low-cost, at-home alternative methodology for testing rainwater for bacteria that may indicate fecal contamination. In total, 226 samples were tested using both methodologies, revealing a positive correlation (r=0.245; p<0.002) between total coliform MPN and SRB MPN, but no discernable correlation between E. coli MPN and SRB MPN. This work indicates a potential value of SRB testing for harvested rainwater if cost, laboratory access, and fecal contamination are of concern.


Asunto(s)
Sulfuro de Hidrógeno , Abastecimiento de Agua , Monitoreo del Ambiente/métodos , Escherichia coli , Lluvia , Agua , Microbiología del Agua
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