Publications by authors named "Donovan F"

Coccidioidomycosis is the clinical disease caused by the dimorphic pathogenic fungi Coccidioides immitis and C posadasii. The number of clinically recognized coccidioidomycosis cases continues to increase yearly including in regions outside the traditional regions of endemicity. Following inhalation of Coccidioides spores, the course may range from asymptomatic exposure with resultant immunity, to a subacute pulmonary illness, to life-threatening disseminated infection.

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Coccidioidomycosis, caused by the dimorphic fungi Coccidioides immitis and Coccidioides posadasii, is recognized as an increasing threat both nationally and worldwide. This is in large part secondary to the expanding range of Coccidioides species and increased international travel to endemic regions. Most individuals exposed to airborne Coccidioides organisms do not need medical attention, but approximately 30% will demonstrate primary pulmonary coccidioidomycosis with signs and symptoms that mimic community-acquired pneumonia or other respiratory illnesses.

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Coccidioidal meningitis (CM) requires lifelong aggressive management, often necessitating hospitalization. In the National Inpatient Sample (2019-2021), CM hospitalizations (N = 2305) were associated with frequent CM-related procedures (63.6% [95% confidence interval {CI}, 59.

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Hereditary spastic paraplegia (HSP) comprises a large group of neurogenetic disorders characterized by progressive lower extremity spasticity. Neurological evaluation and genetic testing were completed in a Malian family with early-onset HSP. Three children with unaffected consanguineous parents presented with symptoms consistent with childhood-onset complicated HSP.

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Inflammatory bowel disease (IBD) commonly requires immunosuppressive treatments to induce and maintain durable remission. Janus kinase inhibitors (JAKis) are a novel group of orally administered, small molecule drugs that work by attenuating multiple cytokine signalling pathways to mediate dysregulated immune responses involved in the pathogenesis of IBD. Tofacitinib, filgotinib and upadacitinib have demonstrated efficacy against placebo and are licensed for the treatment of moderate to severe ulcerative colitis; upadacitinib is the only JAKi also currently approved for the treatment of Crohn's disease.

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Fanconi anemia (FA) is a hereditary, DNA repair deficiency disorder caused by pathogenic variants in any 1 of 22 known genes (FANCA-FANCW). Variants in FANCA account for nearly two-thirds of all patients with FA. Clinical presentation of FA can be heterogeneous and include congenital abnormalities, progressive bone marrow failure, and predisposition to cancer.

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Familial platelet disorder with associated myeloid malignancies (FPDMM) is caused by germline RUNX1 mutations and characterized by thrombocytopenia and increased risk of hematologic malignancies. We recently launched a longitudinal natural history study for patients with FPDMM. Among 27 families with research genomic data by the end of 2021, 26 different germline RUNX1 variants were detected.

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Space-based biomanufacturing has the potential to improve the sustainability of deep space exploration. To advance biomanufacturing, bioprocessing systems need to be developed for space applications. Here, commercial technologies were assessed to design space bioprocessing systems to supply a liquid amine carbon dioxide scrubber with active carbonic anhydrase produced recombinantly.

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Disseminated coccidioidomycosis is associated with significant morbidity and mortality. Involvement of the meninges is often fatal if untreated, typically requiring lifelong antifungal therapy and neurosurgical intervention. We present the case of a young male without any known immunocompromising conditions who opted exclusively for medical management of newly diagnosed coccidioidomycosis meningitis with communicating hydrocephalus and discuss the controversy associated with this approach.

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  • * In a study of 352 OCA patients, the researchers identified 66 genetic variants in the TYR gene, including a common disease-causing haplotype known as "cis-YQ," which was found in around 19.1% of individuals with type 1 OCA.
  • * The study emphasizes the need for a comprehensive analysis of all variants in the TYR gene to improve the understanding of genetic causes of OCA and enhance diagnostic efforts.
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Fanconi anemia (FA) is a rare genetic disease characterized by heterogeneous congenital abnormalities and increased risk for bone marrow failure and cancer. FA is caused by mutation of any one of 23 genes, the protein products of which function primarily in the maintenance of genome stability. An important role for the FA proteins in the repair of DNA interstrand crosslinks (ICLs) has been established .

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Article Synopsis
  • Germline mutations cause familial platelet disorder with associated myeloid malignancies (FPDMM), leading to low platelet counts and a significant risk (35-45%) of blood cancers throughout life.
  • In a study of 29 families, researchers identified 28 different germline variants, including various mutations that impact patient health, with a notable presence of somatic mutations linked to blood cancers in 44.4% of non-malignant patients.
  • Monitoring the changes in these mutations over time is crucial for improving clinical management of patients and understanding the progression to myeloid malignancies.
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Emergency educational programing after disasters contributes to the physical, cognitive, and psychological protection of students when they are at their most vulnerable. The Inter-Agency Network for Education in Emergencies Minimum Standards for Education in Emergencies framework details the need to incorporate specific domains throughout implementation and asserts that teachers and educational institutions play a significant role in supporting disaster-affected youth in the classroom. Following the detrimental impact of Hurricane Maria on Puerto Rico, teachers became critical agents for maintaining the well-being of children at school, so the goals of this analysis are to (1) examine teachers' post-hurricane experiences to find out how the event impacted physical teaching environments and students' learning capacity, (2) investigate how teachers adapted and developed lesson plans to facilitate students' processing of the event, and (3) explore what resources, training, and emotional support teachers needed to continue their work in the classroom post-disaster.

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  • - Fanconi anaemia (FA) is a genetic condition that makes DNA repair faulty, leading to chromosome breakage and a significantly higher risk of specific cancers such as head and neck, esophageal, and anogenital squamous cell carcinomas compared to the general population.
  • - Research reveals that squamous cell carcinomas from FA patients exhibit numerous structural variants, which include small deletions and complex rearrangements, often occurring alongside loss of the TP53 gene but not related to HPV infections.
  • - The instability caused by FA may trigger processes like epithelial-to-mesenchymal transition and heightened inflammatory signaling in skin cells, highlighting the potential for FA's unique genomic issues to inform understanding of sporadic HNSCC linked to tobacco and alcohol
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  • Disseminated coccidioidomycosis (DCM) is a serious illness caused by Coccidioides fungi, primarily affecting individuals in the southwestern U.S. and Mexico, with only 30% of infected individuals showing symptoms and less than 1% developing DCM.
  • Through whole-exome sequencing of 67 DCM patients, researchers identified genetic mutations, including haploinsufficient STAT3 and defects in β-glucan sensing and response, in a significant number of cases, influencing disease dissemination.
  • A validation study with an additional 111 patients confirmed specific variants in genes like CLEC7A and PLCG2 that linked to weakened immune responses, indicating that impaired recognition of the fungi and lowered cytok
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  • Anti-drug antibodies linked to treatment failure in inflammatory bowel disease (IBD) patients on anti-TNF agents were analyzed in a large UK study involving 1058 participants.
  • The study found that patients who developed antibodies to their first anti-TNF drug were more likely to also develop antibodies to their second anti-TNF drug, indicating a potential pattern of immunogenicity across different treatments.
  • Introducing an immunomodulator when switching anti-TNF therapies boosted treatment persistence in patients with immunogenicity, suggesting that combined therapies may enhance outcomes in IBD management.
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  • The study investigates compact binary coalescences with at least one component mass between 0.2 and 1.0 solar masses using data from Advanced LIGO and Advanced Virgo detectors over six months in 2019, but they found no significant gravitational wave candidates.
  • The analysis leads to an upper limit on the merger rate of subsolar binaries ranging from 220 to 24,200 Gpc⁻³ yr⁻¹, based on the detected signals’ false alarm rate.
  • The researchers use these limits to set new constraints on two models for subsolar-mass compact objects: primordial black holes (suggesting they make up less than 6% of dark matter) and
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Central nervous system infection with Coccidioides spp. is fatal if untreated and complications occur even when therapy is directed by experienced clinicians. We convened a panel of clinicians experienced in the management of coccidioidal meningitis to summarize current controversies and provide consensus for the management of this difficult infection.

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Demographic and clinical indicators have been described to support identification of coccidioidomycosis; however, the interplay of these conditions has not been explored in a clinical setting. In 2019, we enrolled 392 participants in a cross-sectional study for suspected coccidioidomycosis in emergency departments and inpatient units in Coccidioides-endemic regions. We aimed to develop a predictive model among participants with suspected coccidioidomycosis.

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We follow a patient with Diamond-Blackfan anemia (DBA) mosaic for a pathogenic RPS19 haploinsufficiency mutation with persistent transfusion-dependent anemia. Her anemia remitted on eltrombopag (EPAG), but surprisingly, mosaicism was unchanged, suggesting that both mutant and normal cells responded. When EPAG was withheld, her anemia returned.

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Tumor necrosis factor alpha (TNFα) is a pluripotent cytokine that is important in many infections, though its role in infection remains poorly understood. The need to understand TNFα in infection has increased recently with the widespread use of TNFα inhibitors for a wide variety of autoimmune conditions. Here, we couple the newly developed infection model using strain Cp1038 and C57BL/6 × DBA/2J F1 (B6D2F1) mice.

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Background: The risk of coccidioidomycosis (CM) as a life-threatening respiratory illness or disseminated CM (DCM) increases as much as 150-fold in immunosuppressed patients. The safety of biologic response modifiers (BRMs) as treatment for patients with autoimmune disease (AI) in CM-endemic regions is not well defined. We sought to determine that risk in the Tucson and Phoenix areas.

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Introduction: Coccidioidomycosis is a fungal infection endemic in the southwestern United States (US). Primary pulmonary coccidioidomycosis (PPC) is a leading cause of community-acquired pneumonia (CAP) in this region, although its diagnosis is often delayed, leading to lag in antifungal treatment and subsequent morbidity. The impact of early empiric antifungal therapy as part of treatment for CAP in endemic areas on clinical outcomes is unknown.

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We search for gravitational-wave signals produced by cosmic strings in the Advanced LIGO and Virgo full O3 dataset. Search results are presented for gravitational waves produced by cosmic string loop features such as cusps, kinks, and, for the first time, kink-kink collisions. A template-based search for short-duration transient signals does not yield a detection.

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