Browsing by Subject "Spontaneous resolution"

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    Natural Clearance of Chlamydia trachomatis Infection Is Associated With Distinct Differences in Cervicovaginal Metabolites
    (Oxford University Press, 2023) Jordan, Stephen J.; Wilson, Landon; Ren, Jie; Gupta, Kanupriya; Barnes, Stephen; Geisler, William M.; Medicine, School of Medicine
    Background: Natural clearance of Chlamydia trachomatis in women occurs in the interval between screening and treatment. In vitro, interferon-γ (IFN-γ)-mediated tryptophan depletion results in C. trachomatis clearance, but whether this mechanism occurs in vivo remains unclear. We previously found that women who naturally cleared C. trachomatis had lower cervicovaginal levels of tryptophan and IFN-γ compared to women with persisting infection, suggesting IFN-γ-independent pathways may promote C. trachomatis clearance. Methods: Cervicovaginal lavages from 34 women who did (n = 17) or did not (n = 17) naturally clear C. trachomatis were subjected to untargeted high-performance liquid chromatography mass-spectrometry to identify metabolites and metabolic pathways associated with natural clearance. Results: In total, 375 positively charged metabolites and 149 negatively charged metabolites were annotated. Compared to women with persisting infection, C. trachomatis natural clearance was associated with increased levels of oligosaccharides trehalose, sucrose, melezitose, and maltotriose, and lower levels of indoline and various amino acids. Metabolites were associated with valine, leucine, and isoleucine biosynthesis pathways. Conclusions: The cervicovaginal metabolome in women who did or did not naturally clear C. trachomatis is distinct. In women who cleared C. trachomatis, depletion of various amino acids, especially valine, leucine, and isoleucine, suggests that amino acids other than tryptophan impact C. trachomatis survival in vivo.
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    Rapid neurological recovery with spontaneous resolution of acute subdural hematoma after severe head trauma: A case report of auto-decompression phenomena
    (Elsevier, 2025) Obeng-Gyasi, Barnabas; Chinthala, Anoop S.; Christodoulides, Alexei; Ordaz, Josue; Mao, Gordon; Neurological Surgery, School of Medicine
    Introduction: The spontaneous resolution of acute subdural hematoma (aSDH) represents an ill-defined but clinically significant phenomenon in traumatic brain injury (TBI). While surgical evacuation remains the standard of care for significant aSDH, rare cases of spontaneous resolution, termed auto-decompression in literature, suggest alternative pathways of hematoma clearance that warrant further investigation. Case presentation: We discuss the case of a 40-year-old male with background seizure disorder who fell off a ladder. His Glasgow Coma Score (GCS) at presentation was 5. Brain Computed Tomography (CT) scan revealed bilateral aSDH and multiple skull fractures. Within 24 h, his GCS quickly improved to 9 T. Repeat brain CT done 72 h post-trauma showed resolution of the aSDH following non-operative management. Discussion: Spontaneous resolution of bilateral aSDH with rapid neurological improvement is a rare but possible occurrence, often attributed to auto-decompression phenomenon in patients with severe head trauma and specific predisposing factors. Our discussion revolves around this patients presentation with polytrauma, complex skull fractures, history of craniotomy, and acute coagulopathy contributing to the spontaneous resolution of the hematoma. Given the complex nature of TBI and the unpredictable course of recovery, clinicians must remain vigilant in continuously reassessing neurological status. Conclusion: This case discusses the unpredictable nature of TBI and highlights the rapid and unexpected resolution of aSDH in a patient with complex neurosurgical history, coagulopathy, and polytrauma. The findings showcase the problems of polytraumatized patients and exemplify the importance of individualized care even when initial signs indicate poor prognosis.