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1.
J Hum Evol ; 192: 103500, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38762383

RESUMO

Plesiadapiforms (putative stem primates) appear in the fossil record shortly after the Cretaceous/Paleogene boundary and subsequently radiated throughout the Paleocene into a taxonomically and ecomorphologically diverse group. The oldest known plesiadapiforms come from early Puercan (the oldest North American Land Mammal 'age' [NALMA] of the Cenozoic) deposits in northeastern Montana, and all records of Puercan plesiadapiforms are taxonomically restricted to members of the Purgatoriidae and the enigmatic genus Pandemonium. Plesiadapiform diversity substantially increased in the following Torrejonian NALMA, but the sparse record of faunas between the Puercan and the well-known middle and late Torrejonian has hampered our understanding of this important interval in early primate evolution. Here we report new plesiadapiform dental fossils from early Torrejonian (To1) deposits from the Tullock Member of the Fort Union Formation in northeastern Montana that record several poorly known taxa including members of the Purgatoriidae, Paromomyidae and Pandemonium, and that document the largest and most diverse assemblage of To1 plesiadapiforms known. We describe a new species of the purgatoriid Ursolestes (Ursolestes blissorum, sp. nov.) that represents the largest plesiadapiform known from the early Paleocene and, among other taxa, provides additional evidence that the temporal range of purgatoriids extended into the Torrejonian. Large sample sizes of the oldest known paromomyid, Paromomys farrandi, allowed us to document intraspecific variability and one undescribed tooth locus. Our observations illuminate changes in dental morphology of some taxa that occurred in To1 and may inform the acquisition of certain diagnostic plesiadapiform dental characters. We evaluate plesiadapiform species richness, mean body mass and body-mass disparity through the Paleocene and reveal unrecognized levels of richness in To1 and a general trend of stable body mass and body-mass disparity. Our findings contribute to documented patterns of plesiadapiform provincialism in the early Paleocene and shed light on the early stages of their Torrejonian radiation.


Assuntos
Fósseis , Primatas , Animais , Fósseis/anatomia & histologia , Montana , Primatas/anatomia & histologia , Primatas/classificação , Evolução Biológica , Dente/anatomia & histologia
2.
MMWR Morb Mortal Wkly Rep ; 73(10): 219-224, 2024 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-38483842

RESUMO

During March-April 2023, a total of 51 persons reported mild to severe gastrointestinal illness after eating at restaurant A in Bozeman, Montana. The outbreak resulted in multiple severe outcomes, including three hospitalizations and two deaths. After an inspection and temporary restaurant closure, the Montana Department of Public Health and Human Services and Montana's Gallatin City-County Health Department collaborated with CDC to conduct a matched case-control study among restaurant patrons to help identify the source of the outbreak. Consumption of morel mushrooms, which are generally considered edible, was strongly associated with gastrointestinal illness. A dose-response relationship was identified, and consumption of raw morel mushrooms was more strongly associated with illness than was consumption of those that were at least partially cooked. In response to the outbreak, educational public messaging regarding morel mushroom preparation and safety was shared through multiple media sources. The investigation highlights the importance of prompt cross-agency communication and collaboration, the utility of epidemiologic studies in foodborne disease outbreak investigations, and the need for additional research about the impact of morel mushroom consumption on human health. Although the toxins in morel mushrooms that might cause illness are not fully understood, proper preparation procedures, including thorough cooking, might help to limit adverse health effects.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Doenças Transmitidas por Alimentos , Humanos , Montana/epidemiologia , Estudos de Casos e Controles , Doenças Transmitidas por Alimentos/epidemiologia , Surtos de Doenças , Restaurantes , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia
3.
MMWR Morb Mortal Wkly Rep ; 73(17): 399-404, 2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38696345

RESUMO

Positive childhood experiences (PCEs) promote optimal health and mitigate the effects of adverse childhood experiences, but PCE prevalence in the United States is not well-known. Using Behavioral Risk Factor Surveillance System data, this study describes the prevalence of individual and cumulative PCEs among adults residing in four states: Kansas (2020), Montana (2019), South Carolina (2020), and Wisconsin (2015). Cumulative PCE scores were calculated by summing affirmative responses to seven questions. Subscores were created for family-related (three questions) and community-related (four questions) PCEs. The prevalence of individual PCEs varied from 59.5% (enjoyed participating in community traditions) to 90.5% (adult in respondents' household made them feel safe), and differed significantly by race and ethnicity, age, and sexual orientation. Fewer non-Hispanic Black or African American (49.2%), non-Hispanic Alaska Native or American Indian (37.7%), and Hispanic or Latino respondents (38.9%) reported 6-7 PCEs than did non-Hispanic White respondents (55.2%). Gay or lesbian, and bisexual respondents were less likely than were straight respondents to report 6-7 PCEs (38.1% and 27.4% versus 54.7%, respectively). A PCE score of 6-7 was more frequent among persons with higher income and education. Improved understanding of the relationship of PCEs to adult health and well-being and variation among population subgroups might help reduce health inequities.


Assuntos
Sistema de Vigilância de Fator de Risco Comportamental , Humanos , Masculino , Adulto , Feminino , Adulto Jovem , Pessoa de Meia-Idade , Adolescente , Prevalência , Kansas/epidemiologia , South Carolina/epidemiologia , Idoso , Wisconsin/epidemiologia , Montana/epidemiologia , Estados Unidos/epidemiologia , Criança
4.
Conserv Biol ; 38(4): e14243, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38433373

RESUMO

Wildlife conservation depends on supportive social as well as biophysical conditions. Social identities such as hunter and nonhunter are often associated with different attitudes toward wildlife. However, it is unknown whether dynamics within and among these identity groups explain how attitudes form and why they differ. To investigate how social identities help shape wildlife-related attitudes and the implications for wildlife policy and conservation, we built a structural equation model with survey data from Montana (USA) residents (n = 1758) that tested how social identities affect the relationship between experiences with grizzly bears (Ursus arctos horribilis) and attitudes toward the species. Model results (r2 = 0.51) demonstrated that the hunter identity magnified the negative effect of vicarious property damage on attitudes toward grizzly bears (ß = -0.381, 95% confidence interval [CI]: -0.584 to -0.178, p < 0.001), which in turn strongly influenced acceptance (ß = -0.571, 95% CI: -0.611 to -0.531, p < 0.001). Our findings suggested that hunters' attitudes toward grizzly bears likely become more negative primarily because of in-group social interactions about negative experiences, and similar group dynamics may lead nonhunters to disregard the negative experiences that out-group members have with grizzly bears. Given the profound influence of social identity on human cognitions and behaviors in myriad contexts, the patterns we observed are likely important in a variety of wildlife conservation situations. To foster positive conservation outcomes and minimize polarization, management strategies should account for these identity-driven perceptions while prioritizing conflict prevention and promoting positive wildlife narratives within and among identity groups. This study illustrates the utility of social identity theory for explaining and influencing human-wildlife interactions.


La influencia de la identidad social sobre la actitud hacia la fauna Resumen La conservación de la fauna depende de condiciones de apoyo tanto sociales como biofísicas. La identidad social, como ser cazador o no, con frecuencia está asociada a las diferentes actitudes hacia la fauna. Sin embargo, no sabemos si las dinámicas dentro y entre estos grupos de identidad explican cómo las actitudes se forman y porqué son diferentes. Construimos un modelo de ecuación estructural con información de encuestas realizadas a 1,758 residentes de Montana (Estados Unidos) para conocer cómo la identidad social ayuda a formar la actitud relacionada con la fauna y las implicaciones que tiene para la conservación y políticas de fauna. El modelo analizó cómo la identidad social afecta la relación entre las experiencias con osos pardos (Ursus arctos horribilis) y la actitud hacia la especie. Los resultados del modelo (r2 = 0.51) demostraron que la identidad de cazador aumentaba el efecto negativo del daño indirecto a la propiedad sobre la actitud hacia los osos (ß=­0.381, 95% CI ­0.584 a ­0.178, p<0.001), lo cual en cambio tenía una gran influencia sobre la aceptación (ß=­0.571, 95% CI ­0.611 a ­0.531, p<0.001). Nuestros descubrimientos sugieren que la actitud de los cazadores hacia los osos probablemente se vuelve más negativa principalmente debido a las interacciones sociales del endogrupo en torno a las experiencias negativas; las dinámicas similares pueden llevar a los no cazadores a menospreciar las experiencias negativas que los miembros del exogrupo han tenido con los osos. Dada la influencia profunda que tiene la identidad social sobre la cognición humana y el comportamiento en una miríada de contextos, los patrones que observamos probablemente sean importantes en una variedad de situaciones de conservación de fauna. Para promover los resultados positivos de conservación y minimizar la polarización, las estrategias de manejo deberían considerar estas percepciones influenciadas por la identidad mientras se prioriza la prevención de conflictos y se promueven narrativas positivas de fauna dentro y entre los grupos de identidad. Este estudio demuestra la utilidad que tiene la teoría de identidad social para explicar e influenciar las interacciones humano­fauna.


Assuntos
Atitude , Conservação dos Recursos Naturais , Identificação Social , Ursidae , Animais , Ursidae/psicologia , Ursidae/fisiologia , Montana , Humanos , Animais Selvagens/psicologia
5.
Oecologia ; 205(1): 149-162, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38796612

RESUMO

Patterns of abundance across space and time, and intraspecific variation in body size, are two species attributes known to influence diet breadth and the structure of interaction networks. Yet, the relative influence of these attributes on diet breadth is often assumed to be equal among taxonomic groups, and the relationship between intraspecific variation in body size on interaction patterns is frequently neglected. We observed bee-flower interactions in multiple locations across Montana, USA, for two growing seasons and measured spatial and temporal patterns of abundance, along with interspecific and intraspecific variation in body size for prevalent species. We predicted that the association between spatial and temporal patterns of abundance and intraspecific variation in body size, and diet breadth, would be stronger for bumble bee compared to non-bumble bee species, because species with flexible diets and long activity periods can interact with more food items. Bumble bees had higher local abundance, occurred in many local communities, more intraspecific variation in body size, and longer phenophases compared to non-bumble bee species, but only local abundance and phenophase duration had a stronger positive association with the diet breadth of bumble bee compared to non-bumble bee species. Communities with a higher proportion of bumble bees also had higher intraspecific variation in body size at the network-level, and network-level intraspecific variation in body size was positively correlated with diet generalization. Our findings highlight that the association between species attributes and diet breadth changes depending on the taxonomic group, with implications for the structure of interaction networks.


Assuntos
Tamanho Corporal , Dieta , Animais , Abelhas , Montana , Flores
6.
Environ Health ; 23(1): 40, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38622704

RESUMO

BACKGROUND: Western Montana, USA, experiences complex air pollution patterns with predominant exposure sources from summer wildfire smoke and winter wood smoke. In addition, climate change related temperatures events are becoming more extreme and expected to contribute to increases in hospital admissions for a range of health outcomes. Evaluating while accounting for these exposures (air pollution and temperature) that often occur simultaneously and may act synergistically on health is becoming more important. METHODS: We explored short-term exposure to air pollution on children's respiratory health outcomes and how extreme temperature or seasonal period modify the risk of air pollution-associated healthcare events. The main outcome measure included individual-based address located respiratory-related healthcare visits for three categories: asthma, lower respiratory tract infections (LRTI), and upper respiratory tract infections (URTI) across western Montana for ages 0-17 from 2017-2020. We used a time-stratified, case-crossover analysis with distributed lag models to identify sensitive exposure windows of fine particulate matter (PM2.5) lagged from 0 (same-day) to 14 prior-days modified by temperature or season. RESULTS: For asthma, increases of 1 µg/m3 in PM2.5 exposure 7-13 days prior a healthcare visit date was associated with increased odds that were magnified during median to colder temperatures and winter periods. For LRTIs, 1 µg/m3 increases during 12 days of cumulative PM2.5 with peak exposure periods between 6-12 days before healthcare visit date was associated with elevated LRTI events, also heightened in median to colder temperatures but no seasonal effect was observed. For URTIs, 1 unit increases during 13 days of cumulative PM2.5 with peak exposure periods between 4-10 days prior event date was associated with greater risk for URTIs visits that were intensified during median to hotter temperatures and spring to summer periods. CONCLUSIONS: Delayed, short-term exposure increases of PM2.5 were associated with elevated odds of all three pediatric respiratory healthcare visit categories in a sparsely population area of the inter-Rocky Mountains, USA. PM2.5 in colder temperatures tended to increase instances of asthma and LRTIs, while PM2.5 during hotter periods increased URTIs.


Assuntos
Poluentes Atmosféricos , Poluição do Ar , Asma , Infecções Respiratórias , Criança , Humanos , Estados Unidos/epidemiologia , Material Particulado/efeitos adversos , Material Particulado/análise , Temperatura , Estações do Ano , Poluentes Atmosféricos/efeitos adversos , Poluentes Atmosféricos/análise , Poluição do Ar/efeitos adversos , Fumaça/efeitos adversos , Asma/epidemiologia , Montana/epidemiologia , Exposição Ambiental/análise
7.
Inhal Toxicol ; 36(3): 158-173, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38583132

RESUMO

OBJECTIVE: Erionite is a naturally occurring fibrous mineral found in soils in some geographical regions. Known for its potency for causing mesothelioma in the Cappadocia region of Turkey, the erionite fiber has attracted interest in the United States due to its presence in a band of rock that extends from Mexico to Montana. There are few toxicology studies of erionite, but all show it to have unusually high chronic toxicity. Despite its high potency compared to asbestos fibers, erionite has no occupational or environmental exposure limits. This paper takes what has been learned about the chemical and physical characteristics of the various forms of asbestos (chrysotile, amosite, anthophyllite, and crocidolite) and predicts the potency of North American erionite fibers. MATERIALS AND METHODS: Based on the fiber potency model in Korchevskiy et al. (2019) and the available published information on erionite, the estimated mesothelioma potency factors (the proportion of mesothelioma mortality per unit cumulative exposure (f/cc-year)) for erionites in the western United States were determined. RESULTS AND DISCUSSION: The model predicted potency factors ranged from 0.19 to 11.25 (average ∼3.5), depending on the region. For reference, crocidolite (the most potent commercial form of asbestos) is assigned a potency factor ∼0.5. CONCLUSION: The model predicted mesothelioma potency of Turkish erionite (4.53) falls in this same range of potencies as erionite found in North America. Although it can vary by region, a reasonable ratio of average mesothelioma potency based on this model is 3,000:500:100:1 comparing North American erionite, crocidolite, amosite, and chrysotile (from most potent to least potent).


Assuntos
Amianto , Neoplasias Pulmonares , Mesotelioma Maligno , Mesotelioma , Zeolitas , Humanos , Asbesto Crocidolita/toxicidade , Asbestos Serpentinas/toxicidade , Amianto Amosita/toxicidade , Mesotelioma/induzido quimicamente , Mesotelioma/epidemiologia , Mesotelioma Maligno/complicações , Amianto/toxicidade , Montana , Neoplasias Pulmonares/epidemiologia
8.
Proc Natl Acad Sci U S A ; 118(45)2021 11 09.
Artigo em Inglês | MEDLINE | ID: mdl-34725150

RESUMO

Species invasions can have substantial impacts on native species and ecosystems, with important consequences for biodiversity. How these disturbances drive changes in the trophic structure of native food webs through time is poorly understood. Here, we quantify trophic disruption in freshwater food webs to invasion by an apex fish predator, lake trout, using an extensive stable isotope dataset across a natural gradient of uninvaded and invaded lakes in the northern Rocky Mountains, USA. Lake trout invasion increased fish diet variability (trophic dispersion), displaced native fishes from their reference diets (trophic displacement), and reorganized macroinvertebrate communities, indicating strong food web disruption. Trophic dispersion was greatest 25 to 50 y after colonization and dissipated as food webs stabilized in later stages of invasion (>50 y). For the native apex predator, bull trout, trophic dispersion preceded trophic displacement, leading to their functional loss in late-invasion food webs. Our results demonstrate how invasive species progressively disrupt native food webs via trophic dispersion and displacement, ultimately yielding biological communities strongly divergent from those in uninvaded ecosystems.


Assuntos
Dieta , Cadeia Alimentar , Espécies Introduzidas , Truta , Animais , Isótopos de Carbono , Invertebrados , Lagos , Montana , Isótopos de Nitrogênio
9.
J Nurs Adm ; 54(7-8): 409-415, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39016556

RESUMO

OBJECTIVE: The aim of this study was to project the impact of legislated nurse staffing ratios on patient-, staff-, and system-level outcomes for Prospective Payment System (PPS) hospitals in Montana. BACKGROUND: In 2023, House Bill 568 was introduced in Montana focused on legislating hospital safe nursing standards. METHODS: A quantitative design was used for a convenience sample of Montana PPS hospitals. Data were gathered through a newly developed survey and from other publicly available sources for the years 2018 to 2022. Independent t tests were conducted when appropriate with the significance threshold set at 0.05. RESULTS: Projections indicate no significant change in patient outcome metrics accompanied by increases in labor requirements, slower emergency department throughput times, and decreases in hospital operating margins. CONCLUSIONS: In Montana, legislating nurse staffing ratios would have downstream implications inconsistent with the intended impact on patient safety, emphasizing the complexity of variables within and external to the healthcare system that drive patient-, staff-, and system-level outcomes.


Assuntos
Infecção Hospitalar , Recursos Humanos de Enfermagem Hospitalar , Admissão e Escalonamento de Pessoal , Montana , Humanos , Recursos Humanos de Enfermagem Hospitalar/provisão & distribuição , Recursos Humanos de Enfermagem Hospitalar/economia , Admissão e Escalonamento de Pessoal/legislação & jurisprudência , Admissão e Escalonamento de Pessoal/economia , Infecção Hospitalar/economia , Infecção Hospitalar/prevenção & controle , Economia Hospitalar
10.
J Insect Sci ; 24(4)2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-39126278

RESUMO

World food supplies rely on pollination, making this plant-animal relationship a highly valued ecosystem service. Bees pollinate flowering plants in rangelands that constitute up to half of global terrestrial vegetation. Livestock grazing is the most widespread rangeland use and can affect insect pollinators through herbivory. We examined management effects on bee abundance and other insect pollinators on grazed and idle sagebrush rangelands in central Montana, USA. From 2016 to 2018, we sampled pollinators on lands enrolled in rest-rotation grazing, unenrolled grazing lands, and geographically separate idle lands without grazing for over a decade. Bare ground covered twice as much area (15% vs. 7) with half the litter (12% vs. 24) on grazed than idle regardless of enrollment. Bee pollinators were 2-3 times more prevalent in grazed than idle in 2016-2017. In 2018, bees were similar among grazed and idled during an unseasonably wet and cool summer that depressed pollinator catches; captures of secondary pollinators was similar among treatments 2 of 3 study years. Ground-nesting bees (94.6% of total bee abundance) were driven by periodic grazing that maintained bare ground and kept litter accumulations in check. In contrast, idle provided fewer nesting opportunities for bees that were mostly solitary, ground-nesting genera requiring unvegetated spaces for reproduction. Managed lands supported higher bee abundance that evolved with bison grazing on the eastern edge of the sagebrush ecosystem. Our findings suggest that periodic disturbance may enhance pollinator habitat, and that rangelands may benefit from periodic grazing by livestock.


Assuntos
Artemisia , Conservação dos Recursos Naturais , Ecossistema , Polinização , Animais , Abelhas/fisiologia , Artemisia/fisiologia , Montana , Herbivoria , Gado
11.
Emerg Infect Dis ; 29(3): 561-568, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36732081

RESUMO

In 2020, Montana, USA, reported a large increase in Colorado tick fever (CTF) cases. To investigate potential causes of the increase, we conducted a case-control study of Montana residents who tested positive or negative for CTF during 2020, assessed healthcare providers' CTF awareness and testing practices, and reviewed CTF testing methods. Case-patients reported more time recreating outdoors on weekends, and all reported finding a tick on themselves before illness. No consistent changes were identified in provider practices. Previously, only CTF serologic testing was used in Montana. In 2020, because of SARS-CoV-2 testing needs, the state laboratory sent specimens for CTF testing to the Centers for Disease Control and Prevention, where more sensitive molecular methods are used. This change in testing probably increased the number of CTF cases detected. Molecular testing is optimal for CTF diagnosis during acute illness. Tick bite prevention measures should continue to be advised for persons doing outdoor activities.


Assuntos
COVID-19 , Febre do Carrapato do Colorado , Vírus da Febre do Carrapato do Colorado , Humanos , Montana , Teste para COVID-19 , Estudos de Casos e Controles , Pandemias , SARS-CoV-2 , Febre do Carrapato do Colorado/epidemiologia
12.
Cancer Causes Control ; 34(12): 1085-1094, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37490140

RESUMO

The objective of this Research-Practice Partnership was to disseminate and implement strategies to assist Community Health Centers in improving the care of rural cancer survivors in Montana. Funded by the National Cancer Institute's Community Outreach and Engagement mechanism, this project utilized the MAP-IT (Mobilize, Assess, Plan, Implement, Track) program planning framework from Healthy People 2020. Partners included Montana's Department of Public Health and Human Services' Cancer Control Program, Montana Primary Care Association, One Health Community Health Center, and Huntsman Cancer Institute at the University of Utah. Project activities focused on (1) Planning, creating, implementing, and evaluating provider/care team education sessions through the Project ECHO tele-mentoring platform and through short webinars and (2) Building processes for identifying, documenting, and connecting with survivors using electronic health records (EHRs) and other resources. Lessons learned from this project include the value of aligning partner goals from the outset to foster sustained commitment, the importance of adapting implementation plans to address challenges and leverage opportunities, and the need for accurate EHR data and formal processes for identifying and engaging with cancer survivors.


Assuntos
Sobreviventes de Câncer , Neoplasias , Humanos , Montana , Neoplasias/terapia , População Rural
13.
BMC Public Health ; 23(1): 1403, 2023 07 20.
Artigo em Inglês | MEDLINE | ID: mdl-37474889

RESUMO

BACKGROUND: Several previous studies investigated the associations between temperature and influenza in a single city or region without a national picture. The attributable risk of influenza due to temperature and the corresponding driving factors were unclear. This study aimed to evaluate the spatial distribution characteristics of attributable risk of Influenza-like illness (ILI) caused by adverse temperatures and explore the related driving factors in the United States. METHODS: ILI, meteorological factors, and PM2.5 of 48 states in the United States were collected during 2011-2019. The time-stratified case-crossover design with a distributed lag non-linear model was carried out to evaluate the association between temperature and ILI at the state level. The multivariate meta-analysis was performed to obtain the combined effects at the national level. The attributable fraction (AF) was calculated to assess the ILI burden ascribed to adverse temperatures. The ordinary least square model (OLS), spatial lag model (SLM), and spatial error model (SEM) were utilized to identify driving factors. RESULTS: A total of 7,716,115 ILI cases were included in this study. Overall, the temperature was negatively associated with ILI risk, and lower temperature gave rise to a higher risk of ILI. AF ascribed to adverse temperatures differed across states, from 49.44% (95% eCI: 36.47% ~ 58.68%) in Montana to 6.51% (95% eCI: -6.49% ~ 16.46%) in Wisconsin. At the national level, 29.08% (95% eCI: 27.60% ~ 30.24%) of ILI was attributable to cold. Per 10,000 dollars increase in per-capita income was associated with the increment in AF (OLS: ß = -6.110, P = 0.021; SLM: ß = -5.496, P = 0.022; SEM: ß = -6.150, P = 0.022). CONCLUSION: The cold could enhance the risk of ILI and result in a considerable proportion of ILI disease burden. The ILI burden attributed to cold varied across states and was higher in those states with lower economic status. Targeted prevention programs should be considered to lower the burden of influenza.


Assuntos
Influenza Humana , Humanos , Estados Unidos/epidemiologia , Temperatura , Estudos Cross-Over , Influenza Humana/epidemiologia , Temperatura Baixa , Montana
14.
BMC Musculoskelet Disord ; 24(1): 80, 2023 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-36717802

RESUMO

BACKGROUND: Agricultural workers have a higher incidence of osteoarthritis (OA), but the etiology behind this phenomenon is unclear. Calving season, which occurs in mid- to late-winter for ranchers, includes physical conditions that may elevate OA risk. Our primary aim was to determine whether OA biomarkers are elevated at the peak of calving season compared to pre-season, and to compare these data with joint health survey information from the subjects. Our secondary aim was to detect biomarker differences between male and female ranchers. METHODS: During collection periods before and during calving season, male (n = 28) and female (n = 10) ranchers completed joint health surveys and provided samples of blood, urine, and saliva for biomarker analysis. Statistical analyses examined associations between mean biomarker levels and survey predictors. Ensemble cluster analysis identified groups having unique biomarker profiles. RESULTS: The number of calvings performed by each rancher positively correlated with plasma IL-6, serum hyaluronic acid (HA) and urinary CTX-I. Thiobarbituric acid reactive substances (TBARS), a marker of oxidative stress, was significantly higher during calving season than pre-season and was also correlated with ranchers having more months per year of joint pain. We found evidence of sexual dimorphism in the biomarkers among the ranchers, with leptin being elevated and matrix metalloproteinase-3 diminished in female ranchers. The opposite was detected in males. WOMAC score was positively associated with multiple biomarkers: IL-6, IL-2, HA, leptin, C2C, asymmetric dimethylarginine, and CTX-I. These biomarkers represent enzymatic degradation, inflammation, products of joint destruction, and OA severity. CONCLUSIONS: The positive association between number of calvings performed by each rancher (workload) and both inflammatory and joint tissue catabolism biomarkers establishes that calving season is a risk factor for OA in Montana ranchers. Consistent with the literature, we found important sex differences in OA biomarkers, with female ranchers showing elevated leptin, whereas males showed elevated MMP-3.


Assuntos
Osteoartrite do Joelho , Humanos , Masculino , Feminino , Osteoartrite do Joelho/diagnóstico , Osteoartrite do Joelho/epidemiologia , Fazendeiros , Leptina , Interleucina-6 , Montana , Estações do Ano , Biomarcadores
15.
Plant Dis ; 107(12): 3727-3730, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37415357

RESUMO

Wheat streak mosaic disease is caused by wheat streak mosaic virus (WSMV) and two other viruses and persistently limits wheat yields in the Great Plains region of the United States. Seed transmission of viruses is an important consideration in international movement and is important epidemiologically. Seed transmission of WSMV in wheat was first reported from Australia in 2005, but there is little data from United States cultivars on the rate of seed transmission. In 2018, mechanically inoculated winter and spring wheat cultivars were evaluated in Montana. We found differences in WSMV seed transmission rates between winter and spring wheat, with average transmission rates in spring wheat (3.1%) being five times higher compared to winter wheat (0.6%). Seed transmission rates in spring wheat were twice as high as the highest previously reported transmission rate for individual genotypes, 1.5%. The results from this study provide a strong argument for increasing the current testing of seed for breeding purposes prior to international movement when WSMV has been observed and caution against using grain from WSMV-infected fields as seed source because it can heighten the risk of wheat streak mosaic outbreaks.


Assuntos
Melhoramento Vegetal , Doenças das Plantas , Montana , Grão Comestível
16.
Plant Dis ; 107(2): 382-392, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35822889

RESUMO

Botrytis spp. cause gray mold and are significant pathogens of pulse crops (dry pea, lentil, and chickpea). Seedling infection can result in plant stunting and death. In this study, 100 Botrytis isolates were recovered from pulse crop seed samples that were submitted to the Regional Pulse Crop Diagnostic Laboratory at Montana State University. Nine Botrytis spp. were found to be associated with pulse seeds in Montana based on a combination of cultural characteristics; the amplification of partial sequences of the G3PDH, HSP60, and RPB2 genes; and phylogenetic analysis. Botrytis cinerea (n = 54) was the predominant species, followed by B. euroamericana (n = 22) and B. prunorum (n = 11). There were a few isolates of B. mali and five novel Botrytis spp. that included one cryptic species. To determine the pathogenicity and aggressiveness of the isolates, dry pea cultivar Lifter, lentil cultivar Richlea, and chickpea cultivar Sierra, detached leaves were inoculated using mycelial plugs. Lesion diameter produced by Botrytis isolates on three hosts differed (P < 0.05). Aggressiveness of B. cinerea was high in all three hosts and varied among the tested isolates. Spore inoculations were conducted on greenhouse-grown dry pea, lentil and chickpea plants using one sporulating isolate each of B. cinerea, B. prunorum, and Botrytis sp. 1. Results indicated that these isolates were pathogenic on the tested hosts. This study illustrates that many species of Botrytis are associated with pulse crop seed in Montana and can be aggressive on multiple crops, which may have implications for disease management.


Assuntos
Cicer , Lens (Planta) , Pisum sativum , Botrytis , Filogenia , Prevalência , Montana
17.
J Health Polit Policy Law ; 48(6): 859-888, 2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-37497885

RESUMO

CONTEXT: The contributions from the field of public health to human society are numerous and are often taken for granted. The COVID-19 pandemic thrust the largely invisible public health workforce into the public eye. Like other career civil servants at the intersection of the citizen-state encounter, reports of uncooperative, hostile, and even violent confrontations between public health workers and those they serve are on the rise. This study explores the attitudes of public health professionals in two states in the American West. METHODS: The authors conducted an anonymous web-based survey of public health professionals in Montana and Oregon one year into the COVID-19 pandemic. FINDINGS: Public health workers who responded to the survey reported beliefs that the COVID-19 pandemic was politicized by actors in the government, both major political parties, the media, and the public broadly. This politicization affected workers' abilities to do their jobs, with respondents in Montana experiencing more negative impacts than those in Oregon. CONCLUSIONS: Public health workers face growing antagonism from the public and pressure from political leaders, which poses a significant concern for the public health workforce and for communities as they prepare to address and overcome future public health challenges.


Assuntos
COVID-19 , Mão de Obra em Saúde , Humanos , Montana/epidemiologia , Oregon/epidemiologia , COVID-19/epidemiologia , Pandemias , Saúde Pública
18.
Int J Mol Sci ; 24(8)2023 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-37108206

RESUMO

The present work focuses on in vitro cultures of Ruta montana L. in temporary immersion PlantformTM bioreactors. The main aim of the study was to evaluate the effects of cultivation time (5 and 6 weeks) and different concentrations (0.1-1.0 mg/L) of plant growth and development regulators (NAA and BAP) on the increase in biomass and the accumulation of secondary metabolites. Consequently, the antioxidant, antibacterial, and antibiofilm potentials of methanol extracts obtained from the in vitro-cultured biomass of R. montana were evaluated. High-performance liquid chromatography analysis was performed to characterize furanocoumarins, furoquinoline alkaloids, phenolic acids, and catechins. The major secondary metabolites in R. montana cultures were coumarins (maximum total content of 1824.3 mg/100 g DM), and the dominant compounds among them were xanthotoxin and bergapten. The maximum content of alkaloids was 561.7 mg/100 g DM. Concerning the antioxidant activity, the extract obtained from the biomass grown on the 0.1/0.1 LS medium variant, with an IC50 0.90 ± 0.03 mg/mL, showed the best chelating ability among the extracts, while the 0.1/0.1 and 0.5/1.0 LS media variants showed the best antibacterial (MIC range 125-500 µg/mL) and antibiofilm activity against resistant Staphylococcus aureus strains.


Assuntos
Alcaloides , Staphylococcus aureus Resistente à Meticilina , Ruta , Ruta/química , Ruta/metabolismo , Imersão , Montana , Alcaloides/farmacologia , Alcaloides/metabolismo , Reatores Biológicos , Antioxidantes/farmacologia , Antioxidantes/metabolismo , Extratos Vegetais/química , Antibacterianos/farmacologia , Antibacterianos/metabolismo
19.
J Environ Manage ; 345: 118748, 2023 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-37666135

RESUMO

Area-based targets, such as percentages of regions protected, are popular metrics of success in the protection of nature. While easily quantified, these targets can be uninformative about the effectiveness of conservation interventions and should be complemented by program impact evaluations. However, most impact evaluations have examined the effect of protected areas on deforestation. Studies that have extended these evaluations to more dynamic systems or different outcomes are less common, largely due to data availability. In these cases, simulations might prove to be a valuable tool for gaining an understanding of the potential range of program effect sizes. Here, we employ simulations of wetland drainage to estimate the impact of the United States Fish and Wildlife Service Small Wetlands Acquisition Program (SWAP) across a ten-year period in terms of wetland area, and breeding waterfowl and brood abundance in the Prairie Pothole Region of North Dakota, South Dakota, and Montana. Using our simulation results, we estimate a plausible range of program impact for the SWAP as an avoided loss of between 0.00% and 0.02% of the carrying capacity for broods and breeding waterfowl from 2008-2017. Despite the low programmatic impact that these results suggest, the perpetual nature of SWAP governance provides promising potential for a higher cumulative conservation impact in the long term if future wetland drainage occurs.


Assuntos
Animais Selvagens , Áreas Alagadas , Animais , Simulação por Computador , Montana
20.
J Clin Rheumatol ; 29(8): 370-374, 2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-37644647

RESUMO

BACKGROUND: Currently, there are 9 states across the United States that do not have a pediatric rheumatologist, including the state of Montana. Patients in these states are often cared for by outreach clinics staffed by pediatric rheumatology (PR) providers from other states or looked after by in-state adult rheumatologists or in-state primary care providers. METHODS: Using a web-based survey, we determined barriers and potential solutions to PR referrals from referring providers (including primary care providers and subspecialists) in Montana state. RESULTS: Eighty-five Montana referring providers responded, with 44% being pediatric physicians and 33% being family medicine physicians. Other respondents were adult rheumatologists, pediatric and family medicine advanced practice providers, orthopedic surgeons, and pediatric subspecialists. Eighty-five percent of providers had previously referred a patient to PR. Referring providers rated difficulty referring MT patients to PR as 27 (on a linear numeric scale of 0-100, with 0 being very difficult) and noted lack of access to local pediatric rheumatologist as the most significant barrier to referral. The top patient barrier as perceived by 95% of providers was travel time. Potential solutions to improve care included presence of local pediatric rheumatologist with 50 miles, development of algorithms for common PR complaints, and outreach clinics. CONCLUSION: Referring providers in Montana report difficulty in referring to PR, with lack of access and travel time being key barriers. Improving access through expanding local PR workforce and increasing access through outreach clinics may help reduce these barriers.


Assuntos
Médicos , Reumatologia , Adulto , Humanos , Criança , Montana , Reumatologistas , Encaminhamento e Consulta
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