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  1. Article ; Online: Obstructive Sleep Apnea and Alzheimer's Disease Pathology: Is Sleep Architecture the Missing Key?

    Gills, Joshua L / Bubu, Omonigho M

    Journal of Alzheimer's disease : JAD

    2024  Volume 98, Issue 1, Page(s) 69–73

    Abstract: Impairments of the sleep architecture due to disrupted sleep in individuals with obstructive sleep apnea (OSA) may result in reduced slow wave sleep (SWS), intermittent hypoxemia, and excessive day time sleepiness- all factors that have been shown to ... ...

    Abstract Impairments of the sleep architecture due to disrupted sleep in individuals with obstructive sleep apnea (OSA) may result in reduced slow wave sleep (SWS), intermittent hypoxemia, and excessive day time sleepiness- all factors that have been shown to impact Alzheimer's disease (AD) risk. In this commentary, we comment on the work by Cavuoto and colleagues in which they examine the associations between nocturnal hypoxemia or sleep disruptions (during SWS) and amyloid-β burden in individuals with OSA. We review the findings in the context of other similar studies and highlight the strengths and weaknesses of these published studies. We note the importance of examining these relationships longitudinally with a large sample size, including considering sleep health disparities, vascular components, and multiple cognitive domain tests.
    MeSH term(s) Humans ; Alzheimer Disease ; Sleep Apnea, Obstructive/complications ; Sleep ; Amyloid beta-Peptides ; Hypoxia
    Chemical Substances Amyloid beta-Peptides
    Language English
    Publishing date 2024-02-16
    Publishing country Netherlands
    Document type Review ; Journal Article
    ZDB-ID 1440127-7
    ISSN 1875-8908 ; 1387-2877
    ISSN (online) 1875-8908
    ISSN 1387-2877
    DOI 10.3233/JAD-231385
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  2. Article: Editorial: Additive or synergistic impacts of sleep, circadian rhythm disturbances and other modifiable risk factors on established and novel plasma biomarkers of Alzheimer's disease pathology.

    Bubu, Omonigho M / Kam, Korey / Parekh, Ankit / Ayappa, Indu

    Frontiers in aging neuroscience

    2023  Volume 15, Page(s) 1168062

    Language English
    Publishing date 2023-03-14
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 2558898-9
    ISSN 1663-4365
    ISSN 1663-4365
    DOI 10.3389/fnagi.2023.1168062
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  3. Article: Exploring the combined effects of sleep apnea and APOE-e4 on biomarkers of Alzheimer's disease.

    Turner, Arlener D / Locklear, Clarence E / Oruru, Daisha / Briggs, Anthony Q / Bubu, Omonigho M / Seixas, Azizi

    Frontiers in aging neuroscience

    2023  Volume 14, Page(s) 1017521

    Abstract: Objective: We determined the interactive associations of apolipoprotein e4 (APOE-e4), and obstructive sleep apnea (OSA) on biomarkers of Alzheimer's disease and examined for racial/ethnic differences of this association.: Methods: We used data from ... ...

    Abstract Objective: We determined the interactive associations of apolipoprotein e4 (APOE-e4), and obstructive sleep apnea (OSA) on biomarkers of Alzheimer's disease and examined for racial/ethnic differences of this association.
    Methods: We used data from the National Alzheimer's Coordinating Center Uniform Dataset (NACC UDS). All participants undergo annual observations, including demographic survey, battery of neuropsychological tests, blood draw (with genotyping), and a clinical evaluation with medical and cognitive/dementia status assessment, while a subset of participants have cerebrospinal fluid (CSF) biomarkers and neuroimaging data. Biomarkers of AD were characterized as the presence of abnormally low amyloid in CSF,
    Results: Biomarker and clinical marker data were derived from 1,387 participants at baseline (mean age = 69.73 ± 8.32; 58.6% female; 13.7% Black/African American), 18.4% of the sample had sleep apnea, and 37.9% were APOE-e4 carriers. Our results confirmed previous reports that OSA and APOE-e4 were independently associated with AD through abnormal levels of amyloid (
    Conclusion: OSA and APOE-e4 are interactively associated with WHM in Black/African Americans. This interaction may partially explicate increased levels of risk in this population.
    Language English
    Publishing date 2023-01-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2558898-9
    ISSN 1663-4365
    ISSN 1663-4365
    DOI 10.3389/fnagi.2022.1017521
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  4. Article ; Online: The effects of social support and support types on continuous positive airway pressure use after 1month of therapy among adults with obstructive sleep apnea.

    Williams, Natasha J / Grant, Andrea Barnes / Butler, Mark / Ebben, Matthew / Belisova-Gyure, Zuzana / Bubu, Omonigho M / Jean-Louis, Girardin / Wallace, Douglas M

    Sleep health

    2023  Volume 10, Issue 1, Page(s) 69–74

    Abstract: Background: The relationship between perceived social support and continuous positive airway pressure remains understudied among individuals with obstructive sleep apnea. The aim of this prospective cohort study was to determine if baseline perceived ... ...

    Abstract Background: The relationship between perceived social support and continuous positive airway pressure remains understudied among individuals with obstructive sleep apnea. The aim of this prospective cohort study was to determine if baseline perceived social support and subtypes predict regular continuous positive airway pressure use after 1month of therapy.
    Methods: Adults with obstructive sleep apnea initiating continuous positive airway pressure therapy were recruited from sleep clinics in New York City. Demographics, medical history, and comorbidities were obtained from patient interview and review of medical records. Objective continuous positive airway pressure adherence data was collected at the first clinical follow-up.
    Results: Seventy-five participants (32% female; non-Hispanic Black 41%; mean age of 56 ± 14years) provided data. In adjusted analyses, poorer levels of overall social support, and subtypes including informational/emotional support, and positive social interactions were associated with lower continuous positive airway pressure use at 1month. Relative to patients reporting higher levels of support, participants endorsing lower levels of overall social support, positive social interaction and emotional/informational support had 1.6 hours (95% CI: 0.5,2.7, hours; p = .007), 1.3 hours (95% CI: 0.2,2.4; p = .026), and 1.2 hours (95% CI: 0.05,2.4; p = .041) lower mean daily continuous positive airway pressure use at 1month, respectively.
    Conclusion: Focusing on social support overall and positive social interaction particularly, could be an effective approach to improve continuous positive airway pressure adherence in patients at risk of suboptimal adherence.
    MeSH term(s) Adult ; Humans ; Female ; Middle Aged ; Aged ; Male ; Prospective Studies ; Continuous Positive Airway Pressure ; Patient Compliance ; Sleep Apnea, Obstructive/complications ; Social Support
    Language English
    Publishing date 2023-11-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2813299-3
    ISSN 2352-7226 ; 2352-7218
    ISSN (online) 2352-7226
    ISSN 2352-7218
    DOI 10.1016/j.sleh.2023.10.013
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  5. Article ; Online: Association between Influenza Vaccination and severe COVID-19 outcomes at a designated COVID-only hospital in Brooklyn.

    Umasabor-Bubu, Ogie Q / Bubu, Omonigho M / Mbah, Alfred K / Nakeshbandi, Mohamed / Taylor, Tonya N

    American journal of infection control

    2021  Volume 49, Issue 10, Page(s) 1327–1330

    Abstract: Maintaining influenza vaccination at high coverage has the potential to prevent a proportion of COVID-19 morbidity and mortality. We examined whether flu-vaccination is associated with severe corona virus disease 2019 (COVID-19) disease, as measured by ... ...

    Abstract Maintaining influenza vaccination at high coverage has the potential to prevent a proportion of COVID-19 morbidity and mortality. We examined whether flu-vaccination is associated with severe corona virus disease 2019 (COVID-19) disease, as measured by intensive care unit (ICU)-admission, ventilator-use, and mortality. Other outcome measures included hospital length of stay and total ICU days. Our findings showed that flu-vaccination was associated with a significantly reduced likelihood of an ICU admission especially among aged <65 and non-obese patients. Public health promotion of flu-vaccination may help mitigate the overwhelming demand for critical COVID-19 care pending the large-scale availability of COVID-19 vaccines.
    MeSH term(s) COVID-19 ; COVID-19 Vaccines ; Hospital Mortality ; Hospitals ; Humans ; Influenza, Human/prevention & control ; Intensive Care Units ; SARS-CoV-2 ; Vaccination
    Chemical Substances COVID-19 Vaccines
    Language English
    Publishing date 2021-04-20
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 392362-9
    ISSN 1527-3296 ; 0196-6553
    ISSN (online) 1527-3296
    ISSN 0196-6553
    DOI 10.1016/j.ajic.2021.04.006
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  6. Article ; Online: Ambient Stimuli Perpetuate Nighttime Sleep Disturbances in Hospital Patients With TBI.

    Williams, Ellita T / Bubu, Omonigho M / Seixas, Azizi / Sarpong, Daniel F / Jean-Louis, Girardin

    Biological research for nursing

    2021  Volume 23, Issue 4, Page(s) 637–645

    Abstract: Background and objectives: The effect of the ambient environment, sound, light, and movement, on the nighttime rest-activity of patients hospitalized with moderate-severe traumatic brain injury (TBI) is poorly understood. The purpose of this study was ... ...

    Abstract Background and objectives: The effect of the ambient environment, sound, light, and movement, on the nighttime rest-activity of patients hospitalized with moderate-severe traumatic brain injury (TBI) is poorly understood. The purpose of this study was to examine how sound, light, and movement in these patients' hospital rooms may contribute to nighttime awakenings.
    Methods: An observational design was used with 18 adult participants on a neuroscience step-down unit diagnosed with moderate-severe TBI. For up to five consecutive nights, actigraphy was used to capture nighttime awakenings while a custom-made multisensory device captured sound, light, and movement exposures in the participant's room.
    Results: Participants were awake for 24% (or about 3 hr) of the time during the designated nighttime period of 8 pm to 8 am. Average nighttime exposures of sound was 52 dB, light was nine lumens, and movement, measured as a proportion, was 0.28% or 28%. With each stimuli exposure set at its average, there was a 20% probability of participant nighttime awakenings. Clinically meaningful reductions of movement in and out the participant's room and elevated sound significantly decreases the participant's probability of nighttime awakenings (
    Conclusion: The ambient environment seems to impede restful sleep in immediate post-injury phase of patients with moderate-severe TBI.
    MeSH term(s) Actigraphy ; Adult ; Brain Injuries, Traumatic/complications ; Hospitals ; Humans ; Sleep ; Sleep Wake Disorders
    Language English
    Publishing date 2021-05-13
    Publishing country United States
    Document type Journal Article ; Observational Study ; Research Support, N.I.H., Extramural
    ZDB-ID 2145107-2
    ISSN 1552-4175 ; 1099-8004
    ISSN (online) 1552-4175
    ISSN 1099-8004
    DOI 10.1177/10998004211016060
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  7. Article ; Online: Clinical characteristics and survival of patients with multiple metachronous esophageal tumor.

    Mukhtar, Fahad / Bubu, Omonigho M / Hung N, Luu

    Cancer treatment and research communications

    2018  Volume 17, Page(s) 13–17

    Abstract: Background: The aim of this study is to determine the clinical characteristics and predictors of survival for patients with multiple metachronous esophageal tumors (MMET) and to compare the survival with patients that have single esophageal tumor (SET).! ...

    Abstract Background: The aim of this study is to determine the clinical characteristics and predictors of survival for patients with multiple metachronous esophageal tumors (MMET) and to compare the survival with patients that have single esophageal tumor (SET).
    Method: We identified all cases of primary esophageal cancer from the Surveillance, Epidemiology and End Results program database from 2000 to 2013. The primary outcome was the development of a second esophageal cancer six months after the diagnosis of the first tumor. A secondary outcome was disease-specific death from esophageal cancer. Chi-square test was used to compare the tumor and demographic characteristics of patients with SET versus the first and second tumor characteristics of patients with MMET. Logistic regression was used to obtain the odds ratios between patients with secondary tumors and those with primary tumors. Accelerated life model was performed for patients with MMET to determine the predictors of survival.
    Results: Patients with MMET were more likely to have localized stage disease compared to those with SET (P < 0.0001). Distant stage disease for both first tumor (β = -0.402, P = 0.003) and second tumor (β = -0.301, P = 0.033) were predictors of increased mortality. The interval between the first and second tumor affected survival. Intervals of 2-5 years and > 5 years were associated with a reduced hazard with a β = 0.53 and 1.13, P < 0.0001, respectively.
    Conclusion: Early development of a second tumor in MMET is associated with poorer survival. Patients with MMET may benefit from regular follow-up and intervention to prevent the development of a second tumor.
    MeSH term(s) Adult ; Age Distribution ; Aged ; Esophageal Neoplasms/mortality ; Esophageal Neoplasms/pathology ; Female ; Humans ; Kaplan-Meier Estimate ; Male ; Middle Aged ; Neoplasms, Second Primary/mortality ; Neoplasms, Second Primary/pathology ; Prognosis ; SEER Program ; United States/epidemiology ; Young Adult
    Language English
    Publishing date 2018-08-23
    Publishing country England
    Document type Comparative Study ; Journal Article
    ISSN 2468-2942
    ISSN (online) 2468-2942
    DOI 10.1016/j.ctarc.2018.08.003
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  8. Article ; Online: Discrimination and Hypertension Among Older African Americans and Caribbean Blacks: The Moderating Effects of John Henryism.

    Nguyen, Ann W / Miller, David / Bubu, Omonigho M / Taylor, Harry O / Cobb, Ryon / Trammell, Antoine R / Mitchell, Uchechi A

    The journals of gerontology. Series B, Psychological sciences and social sciences

    2022  Volume 77, Issue 11, Page(s) 2049–2059

    Abstract: Objectives: Discrimination is a major contributor to health disparities between Black and White older adults. Although the health effects of discrimination are well established, less is known about factors that may intervene in the discrimination-health ...

    Abstract Objectives: Discrimination is a major contributor to health disparities between Black and White older adults. Although the health effects of discrimination are well established, less is known about factors that may intervene in the discrimination-health connection, such as coping strategies. The study aim was to determine whether John Henryism (JH; high-effort coping) moderates the association between racial discrimination and hypertension in nationally representative samples of older African Americans and Caribbean Blacks.
    Methods: The analytic sample was drawn from the National Survey of American Life-Reinterview, which was conducted 2001-2003, and included African Americans (N = 546) and Caribbean Blacks (N = 141) aged 55 and older. Study variables included racial discrimination, JH, and hypertension. Logistic regressions, which controlled key sociodemographic differences, were used to test the study aim.
    Results: Among both Black ethnic groups, discrimination and JH were not associated with hypertension. For African Americans low and moderate in JH, discrimination was unrelated to hypertension; discrimination was positively associated with hypertension for African Americans high in JH. For Caribbean Blacks, discrimination was positively associated with hypertension among respondents low in JH. Among Caribbean Blacks moderate and high in JH, discrimination was not associated with hypertension.
    Discussion: The findings indicate that JH, in the face of discrimination, is associated with hypertension of older African Americans but may be an effective coping strategy for older Caribbean Blacks due to cultural and sociodemographic differences between the 2 ethnic groups. Future research should investigate the differing mechanisms by which JH influences health in heterogeneous older Black populations.
    MeSH term(s) Humans ; United States/epidemiology ; Aged ; Black or African American ; Ethnicity ; Black People ; Hypertension ; Caribbean Region
    Language English
    Publishing date 2022-01-04
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1223664-0
    ISSN 1758-5368 ; 1079-5014
    ISSN (online) 1758-5368
    ISSN 1079-5014
    DOI 10.1093/geronb/gbab215
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  9. Article ; Online: Obstructive Sleep Apnea and Its Treatment in Aging: Effects on Alzheimer's disease Biomarkers, Cognition, Brain Structure and Neurophysiology.

    Mullins, Anna E / Kam, Korey / Parekh, Ankit / Bubu, Omonigho M / Osorio, Ricardo S / Varga, Andrew W

    Neurobiology of disease

    2020  Volume 145, Page(s) 105054

    Abstract: Here we review the impact of obstructive sleep apnea (OSA) on biomarkers of Alzheimer's disease (AD) pathogenesis, neuroanatomy, cognition and neurophysiology, and present the research investigating the effects of continuous positive airway pressure ( ... ...

    Abstract Here we review the impact of obstructive sleep apnea (OSA) on biomarkers of Alzheimer's disease (AD) pathogenesis, neuroanatomy, cognition and neurophysiology, and present the research investigating the effects of continuous positive airway pressure (CPAP) therapy. OSA is associated with an increase in AD markers amyloid-β and tau measured in cerebrospinal fluid (CSF), by Positron Emission Tomography (PET) and in blood serum. There is some evidence suggesting CPAP therapy normalizes AD biomarkers in CSF but since mechanisms for amyloid-β and tau production/clearance in humans are not completely understood, these findings remain preliminary. Deficits in the cognitive domains of attention, vigilance, memory and executive functioning are observed in OSA patients with the magnitude of impairment appearing stronger in younger people from clinical settings than in older community samples. Cognition improves with varying degrees after CPAP use, with the greatest effect seen for attention in middle age adults with more severe OSA and sleepiness. Paradigms in which encoding and retrieval of information are separated by periods of sleep with or without OSA have been done only rarely, but perhaps offer a better chance to understand cognitive effects of OSA than isolated daytime testing. In cognitively normal individuals, changes in EEG microstructure during sleep, particularly slow oscillations and spindles, are associated with biomarkers of AD, and measures of cognition and memory. Similar changes in EEG activity are reported in AD and OSA, such as "EEG slowing" during wake and REM sleep, and a degradation of NREM EEG microstructure. There is evidence that CPAP therapy partially reverses these changes but large longitudinal studies demonstrating this are lacking. A diagnostic definition of OSA relying solely on the Apnea Hypopnea Index (AHI) does not assist in understanding the high degree of inter-individual variation in daytime impairments related to OSA or response to CPAP therapy. We conclude by discussing conceptual challenges to a clinical trial of OSA treatment for AD prevention, including inclusion criteria for age, OSA severity, and associated symptoms, the need for a potentially long trial, defining relevant primary outcomes, and which treatments to target to optimize treatment adherence.
    MeSH term(s) Aging/physiology ; Alzheimer Disease/physiopathology ; Biomarkers/metabolism ; Brain/physiopathology ; Cognition/physiology ; Continuous Positive Airway Pressure ; Humans ; Sleep Apnea, Obstructive/physiopathology ; Sleep Apnea, Obstructive/therapy
    Chemical Substances Biomarkers
    Language English
    Publishing date 2020-08-27
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1211786-9
    ISSN 1095-953X ; 0969-9961
    ISSN (online) 1095-953X
    ISSN 0969-9961
    DOI 10.1016/j.nbd.2020.105054
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  10. Article ; Online: Discrimination Predicts Suboptimal Adherence to CPAP Treatment and Mediates Black-White Differences in Use.

    Wallace, Douglas M / Grant, Andrea Barnes / Belisova-Gyure, Zuzana / Ebben, Matthew / Bubu, Omonigho M / Johnson, Dayna A / Jean-Louis, Girardin / Williams, Natasha J

    Chest

    2023  Volume 165, Issue 2, Page(s) 437–445

    Abstract: Background: Although racial and ethnic differences in CPAP adherence for OSA are widely established, no studies have examined the influence of perceived racial discrimination on CPAP usage, to our knowledge.: Research question: (1) Do Black adults ... ...

    Abstract Background: Although racial and ethnic differences in CPAP adherence for OSA are widely established, no studies have examined the influence of perceived racial discrimination on CPAP usage, to our knowledge.
    Research question: (1) Do Black adults with OSA report experiencing greater amounts of discrimination than non-Hispanic White adults? (2) Is discrimination associated with poorer CPAP adherence over time, independent of self-identified race? (3) Does discrimination mediate the relationship between self-identified Black race and CPAP usage?
    Study design and methods: In this prospective study, Black and non-Hispanic White adults with OSA initiating CPAP were enrolled from two sleep centers and completed questionnaires including sociodemographics, perceived discrimination, daytime sleepiness, insomnia symptoms, and depressive symptoms. Perceived discrimination was measured using the Everyday Discrimination Scale (EDS). Black and White group comparisons for baseline sociodemographic variables, sleep symptoms, and perceived discrimination were performed with Student t test or χ
    Results: The sample for this analysis consisted of 78 participants (31% female, 38% Black) with a mean age of 57 ± 14 years. Sixty percent of the Black adults reported they experienced racial discrimination at least a few times each year. Relative to White adults, Black adults were also more likely to indicate more than one reason for discrimination (27% vs 4%, P = .003). Adjusting for discrimination, self-identified Black race was associated with 1.4 (95% CI, -2.3 to -0.4 h; P = .006) and 1.6 (95% CI, -2.6 to -0.6 h; P = .003) fewer hours of mean daily CPAP usage at 30 and 90 days, respectively. In the fully adjusted model, a 1-unit change in the total discrimination score (more discrimination) was associated with a 0.08-h (95% CI, 0.01-0.15 h; P = .029) and 0.08-h (95% CI, 0.01-0.16 h; P = .045) change in mean daily CPAP usage at 30 and 90 days, respectively.
    Interpretation: Adults with OSA who encountered racial discrimination experienced greater decrement in CPAP usage than those who did not experience racial discrimination.
    MeSH term(s) Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Continuous Positive Airway Pressure/psychology ; Patient Compliance/ethnology ; Patient Compliance/psychology ; Prospective Studies ; Sleep ; Sleep Apnea, Obstructive/ethnology ; Sleep Apnea, Obstructive/therapy ; Sleep Initiation and Maintenance Disorders/ethnology ; Sleep Initiation and Maintenance Disorders/therapy ; White People/psychology ; Racism/ethnology ; Racism/psychology ; Black or African American/psychology
    Language English
    Publishing date 2023-09-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1032552-9
    ISSN 1931-3543 ; 0012-3692
    ISSN (online) 1931-3543
    ISSN 0012-3692
    DOI 10.1016/j.chest.2023.09.016
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