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Department of Defense lands are essential for providing important habitat for threatened, endangered, and at-risk species (TER-S). However, there is little information on the effects of military-related contaminants on TER-S on these lands in field situations. Thus, this study examined genotoxicity and oxidative stress in gopher tortoises (Gopherus polyphemus) on Camp Shelby, MS-the largest known population of this species, which is listed as an "endangered species" in Mississippi and a "threatened species" by the U.S. government. Blood was collected from tortoises at 19 different sites on the base with different levels of habitat quality (high-quality and low-quality habitat) and military activity (high, low, and no military activity). Oxidative stress was quantified as lipid peroxidation and GSSG/GSH ratios, while DNA damage was determined using flow cytometry. Our results suggest that: (1) for tortoises residing in low-quality habitats, oxidative stress and DNA damage increased with increasing military activity, while in high-quality habitats, oxidative stress and DNA damage decreased with increasing military activity; (2) in the absence of military activity, tortoises in high-quality habitat had higher levels of oxidative stress and DNA damage than those in low-quality habitat, and (3) there were interactions between military activity, habitat quality, and landuse in terms of the amount of observable DNA damage and oxidative stress. In particular, on high-quality habitat, tortoises from areas with high levels of military activity had lower levels of oxidative stress and DNA damage biomarkers than on reference sites. This may represent a compensatory or hormetic response. Conversely, on low-quality habitats, the level of oxidative stress and DNA damage was lower on the reference sites. Thus, tortoises on higher-quality habitats may have a greater capacity for compensatory responses. In terms of management implications, it is suggested that low quality habitats should be a higher priority for remediation, and lower priority for conducting military activities.
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Dano ao DNA , Ecossistema , Monitoramento Ambiental , Estresse Oxidativo , Tartarugas/fisiologia , Animais , Espécies em Perigo de Extinção , MilitaresRESUMO
African Americans face the most severe burden of HIV among all racial and ethnic groups. Direct involvement of faith leaders and faith communities is increasingly suggested as a primary strategy to reduce HIV-related disparities, and Black churches are uniquely positioned to address HIV stigma, prevention, and care in African American communities. The authors describe an academic-community partnership to engage Black churches to address HIV in a predominantly African American, urban, southern Midwest location. The opportunities, process, and challenges in forming this academic-community partnership with Black churches can be used to guide future efforts toward engaging faith institutions, academia, and other community partners in the fight against HIV.
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OBJECTIVES/HYPOTHESIS: To explore the relationship between food hypersensitivity and common upper aerodigestive disorders found in children younger than 2 years. STUDY DESIGN: Case control study. SETTING: Tertiary pediatric gastroenterology/otolaryngology clinics. METHODS: Two-year retrospective chart review of a common cohort of children younger than 2 years with suspected cow's milk protein allergy (CMPA). Patients were managed in both a tertiary pediatric gastroenterology and otolaryngology clinic and compared with a control study group. RESULTS: One hundred ninety-one children with CMPA were reviewed. One hundred forty-one had aerodigestive complaints, with 101 having sufficient follow-up to participate in the study. Ninety-one percent of this final patient group demonstrated improved symptoms following dairy elimination. Twenty-five patients (27%) had associated otolaryngologic (ear, nose, and throat [ENT]) issues that had been refractory to maximal gastroesophageal reflux therapy. The most common associated upper aerodigestive conditions were persistent upper airway congestion (72%) and oropharyngeal dysphagia (80%). Sixty percent of ENT disease improved with elimination diet. Eosinophilic esophagitis was noted in 36% of the cohort who had mucosal biopsies performed. Otolaryngology intervention was much more common in the cohort of children with CMPA compared with controls (odds ratio, 33.78; 95% confidence interval, 7.55, 151.03). CONCLUSIONS: CMPA is difficult to diagnose because of limited accurate diagnostic tools, especially in young children. This study suggests a relationship between CMPA and otolaryngologic conditions in children younger than 2 years. Some patients in this study showed symptom improvement via an elimination diet. Early recognition of otolaryngologic manifestations of CMPA may help manage this condition in young children.
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Hipersensibilidade a Leite/complicações , Hipersensibilidade a Leite/etiologia , Proteínas do Leite/efeitos adversos , Otorrinolaringopatias/complicações , Estudos de Casos e Controles , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Proteínas do Leite/imunologia , Estudos RetrospectivosRESUMO
OBJECTIVE: There are few established diagnostic tools to define non-IgE-mediated food hypersensitivity reactions. Cow milk protein allergy (CMPA) is a multisystem disorder affecting the gastrointestinal, skin, and lower and upper airway systems. This link is frequently missed because of subspecialty evaluation of the multisystem effects individually. The authors hypothesize that a more global evaluation based on a simple scored questionnaire will reveal this link. METHODS: Over an 18-month period, children younger than 2 years with non-IgE-mediated CMPA were identified. A symptom questionnaire was developed and scored and also applied to a control population. The prevalence of symptoms in each group was compared and a cumulative score was determined. Symptoms evaluated included gastrointestinal, aerodigestive, lower airway, and skin symptoms. A positive response was scored 1 and a negative response scored 0. RESULTS: Significant differences in prevalence rates between CMPA and control populations were noted, particularly in aerodigestive symptoms. There were marked differences in cumulative score between populations (P < .001). The authors identified a cut-off score at which there was close to 80% sensitivity and 90% specificity for distinguishing CMPA from a control population. CONCLUSION: A global evaluation of multiple systems can be an important diagnostic tool in determining CMPA in infants.
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Técnicas de Apoio para a Decisão , Hipersensibilidade a Leite/diagnóstico , Estudos Transversais , Feminino , Humanos , Imunoglobulina E/imunologia , Lactente , Masculino , Hipersensibilidade a Leite/imunologia , Projetos Piloto , Curva ROC , Estudos Retrospectivos , Sensibilidade e Especificidade , Índice de Gravidade de Doença , Inquéritos e QuestionáriosRESUMO
BACKGROUND: Accurate catheter placement in children for esophageal pH monitoring is performed following an endoscopy using a mathematical formula followed by confirmatory radiograph. AIM: To determine if endoscopic visualization of the gastroesophageal junction can be used for sensor placement without the need for confirmatory radiograph. METHODS: Sixty-four catheters were placed using the Strobel formula method and 57 catheters were placed by visualization. RESULTS: With the formula method, 66% of children required probe adjustment compared with 7% when the probe was placed by direct visualization (p < .005). CONCLUSION: Placing pH sensors under direct visualization is accurate and reduces radiation exposure.