Publications by authors named "Zachary Koontz"

Purpose: Food insecurity is prevalent among patients with cancer. Gaps in our understanding of preferences for food assistance among Latino or Hispanic, immigrant, and people with multiple races and ethnicities limit uptake of food assistance interventions among these populations. We aimed to deeply understand the needs and preferences and barriers to food assistance intervention uptake among low-income, predominantly Latino or Hispanic, immigrant, and people with multiple races and ethnicities and cancer to inform development of tailored interventions.

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Purpose: Latinx adults with cancer, as compared with non-Latinx White adults, are diagnosed with more advanced stages and experience worse quality of life. Identifying barriers in cancer care among low-income Latinx adults is crucial to designing and implementing culturally appropriate interventions. The objective of this study was to explore the specific barriers encountered by Latinx adults after a cancer diagnosis and perspectives on the use of community health workers (CHWs) to address these barriers.

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Background: Precision cancer care has reduced cancer-related mortality. However, minorities remain less likely to receive precision medicine than White populations with cancer due to language and system-level barriers. Precision medicine knowledge increases involvement in treatment decisions and receipt of such treatment.

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Purpose: Lung cancer is the second most common cancer and the leading cause of cancer death in the United States. Persistent disparities remain in the incidence, mortality, and quality of lung cancer care received among minorities and populations with low income. This study aims to evaluate perspectives of low-income and minority patients with lung cancer on health system-level barriers and facilitators to high-quality lung cancer care delivery.

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Introduction: Disparities in precision cancer care delivery among low-income Latinx adults are well described. In prior work, we developed a community health worker-led goals of care and cancer symptom assessment intervention. The objective of this study was to adapt this intervention for a community setting, incorporating precision cancer care delivery.

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This investigation examines oxidation conditions under which hemoglobin extracts membrane phospholipid from erythrocytes and model membranes. In erythrocytes made echinocytic with exogenous phospholipid, addition of hemoglobin oxidized with hydrogen peroxide (H2O2) or Vitamin C (conditions that result in the formation of significant quantities of choleglobin), but not ferricyanide (which produces predominantly methemoglobin), induced dose-dependent shape reversion to less echinocytic forms, consistent with extraction of phospholipids from the exofacial side of the membrane. Erythrocytes preloaded with radiolabeled phosphatidylcholine or NBD-labeled phosphatidylcholine, phosphatidylglycerol or phosphatidic acid, exhibited greatest extraction of radiolabel or fluorescence signal with exogenous hemoglobin oxidized via H2O2 or Vitamin C, but not ferricyanide.

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This retrospective study provides long-term results of medial patellar ligament (MPL) desmoplasty in horses with intermittent upward fixation of the patella (UFP) that were treated at a single referral hospital over a 7-year period. Follow-up interviews were conducted with owners, trainers, or referring veterinarians using a standardized questionnaire. Overall, 71% of horses returned to their intended use with only 18% at a higher level.

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