9 results on '"Summers, Nathan A"'
Search Results
2. Metabolic Changes Associated With the Use of Integrase Strand Transfer Inhibitors Among Virally Controlled Women.
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Summers, Nathan A, Lahiri, Cecile D, Angert, Christine D, Aldredge, Amalia, Mehta, C Christina, Ofotokun, Ighovwerha, Kerchberger, Anne M, Gustafson, Deborah, Weiser, Sheri D, Kassaye, Seble, Konkle-Parker, Deborah, Sharma, Anjali, Adimora, Adaora A, Bolivar, Hector, Cocohoba, Jennifer, French, Audrey L, Golub, Elizabeth T, and Sheth, Anandi N
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Diabetes ,Prevention ,Clinical Research ,Cardiovascular ,Nutrition ,Obesity ,Metabolic and endocrine ,Adult ,Cohort Studies ,Female ,HIV Infections ,HIV Integrase Inhibitors ,HIV-1 ,Humans ,Middle Aged ,Retrospective Studies ,HIV ,INSTI ,ART ,diabetes mellitus ,BP ,hypertension ,Clinical Sciences ,Public Health and Health Services ,Virology - Abstract
BackgroundIntegrase strand transfer inhibitors (INSTIs) have been associated with weight gain among women living with HIV. We aimed to investigate the association between INSTIs and change in cardiometabolic risk indicators.SettingRetrospective cohort.MethodsData from 2006 to 2017 were analyzed from women living with HIV enrolled in the longitudinal Women's Interagency HIV Study who were virally controlled on antiretroviral therapy (ART) for ≥5 consecutive semiannual visits. Women who switched/added an INSTI to ART (INSTI group) were compared with women who remained on non-INSTI ART (non-INSTI group). Outcomes included changes in fasting lipids and glucose, hemoglobin A1c (HbA1c), blood pressure (BP), and incident diabetes, hypertension, and insulin resistance. Outcomes were measured 6-12 months before and 6-18 months after INSTI switch/add in the INSTI group with comparable visits in the non-INSTI group. Longitudinal linear regression models compared change over time in each outcome by the study group.ResultsOne thousand one hundred eighteen participants (234 INSTI, 884 non-INSTI) were followed for a median 2.0 (Q1 1.9, Q3 2.0) years. Participants were median age 49 years, 61% Black, and 73% overweight or obese (body mass index ≥25 kg/m). Compared with non-INSTI, the INSTI group experienced greater increases in HbA1c (+0.05 vs. -0.06 mg/dL, P = 0.0318), systolic BP (+3.84 vs. +0.84 mm Hg, P = 0.0191), and diastolic BP (+1.62 vs. -0.14 mm Hg, P = 0.0121), with greatest change in HbA1c among women on INSTIs with ≥5% weight gain.ConclusionsINSTI use was associated with unfavorable changes in HbA1c and systolic and diastolic BP during short-term follow-up. Further research is needed to understand long-term cardiometabolic effects of INSTI use.
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- 2020
3. Effects of Gender-Affirming Hormone Therapy on Progression Along the HIV Care Continuum in Transgender Women.
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Summers, Nathan A, Huynh, Trang T, Dunn, Ruth C, Cross, Sara L, and Fuchs, Christian J
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TRANS women , *CONTINUUM of care , *HORMONE therapy , *HIV , *NOSOLOGY - Abstract
Background Progression along the HIV care continuum has been a key focus for improving outcomes for people with HIV (PWH). Transgender women with HIV (TGWWH) have not made the same progress as their cisgender counterparts. Methods All PWH identifying as transgender women receiving care at our clinic from 1/1/2015 to 12/31/2019 were identified from the electronic health records (EHRs) using International Classification of Diseases (ICD) codes. Demographics, laboratory data, prescription of gender-affirming hormone therapy (GAHT), and visit history were abstracted from the EHR. Retention in care and viral suppression were defined using Centers for Disease Control and Prevention definitions. The proportions of TGWWH who were consistently retained in care or virally suppressed over time were calculated using a binary response generalized mixed model including random effects and correlated errors. Results Of the 76 PWH identified by ICD codes, 2 were excluded for identifying as cisgender and 15 for insufficient records, leaving 59 TGWWH included for analysis. Patients were on average 35 years old and Black (86%), with a median CD4 count of 464 cells/µL. There were 13 patients on GAHT at study entry and 31 receiving GAHT at any point during the study period. Fifty-five percent were virally suppressed at study entry and 86% at GAHT initiation. The proportion of TGWWH who were consistently virally suppressed over time was greater among those receiving GAHT compared with those who were not (P = .04). Conclusions Rates of viral suppression were significantly greater among TGWWH receiving GAHT when compared with those who were not. More research to evaluate the reasons behind this effect is needed. [ABSTRACT FROM AUTHOR]
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- 2021
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4. Predictors for Poor Linkage to Care Among Hospitalized Persons Living with HIV and Co-Occurring Substance Use Disorder.
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Summers, Nathan A., Colasanti, Jonathan A., Feaster, Daniel J., Armstrong, Wendy S., Rodriguez, Allan, Jain, Mamta K., Jacobs, Petra, Metsch, Lisa R., and del Rio, Carlos
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Persons living with HIV (PLWH) with substance use disorders (SUD) remain a population difficult to engage in HIV care. Project HOPE (Hospital Visits as an Opportunity for Prevention and Engagement), a randomized controlled trial testing patient navigation with/without contingency management for PLWH with SUD, aimed to address this disparity. PLWH with SUD who were out of care were recruited from 11 hospitals across the United States from 2012 to 2014. Baseline socioeconomic factors, medical mistrust scores, and perceived discrimination surveys were collected at enrollment and evaluated for effects on linkage to care at the 6-month follow-up assessment. Linkage to care (attending an outpatient visit for HIV care), early linkage to care (attending first visit within 30 days of enrollment), and engagement in care (two HIV visits within the 6-month period) were determined by medical record abstraction, supplemented by self-report. Among 801 participants enrolled in the study (mean age 45 years, 33% women, and 73% African American), those who did not complete high school and with severe food insecurity had lower odds of being linked to care at 6 months. Those with high levels of medical mistrust, recent drug use, and who did not complete high school had lower odds of early linkage to care. Early linkage was associated with higher odds of engagement at 6 months and was mitigated by both patient navigator interventions (all p < .05). Addressing social determinants of health is critical to correct the disparity seen in HIV outcomes among PLWH with SUD. Identifying factors that alter the effect of interventions could help identify patients who would benefit most. [ABSTRACT FROM AUTHOR]
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- 2020
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5. Not a Disease of the Past: A Case Series of Progressive Multifocal Leukoencephalopathy in the Established Antiretroviral Era.
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Summers, Nathan A., Kelley, Colleen F., Armstrong, Wendy, Marconi, Vincent C., and Nguyen, Minh Ly
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Progressive multifocal leukoencephalopathy (PML) and PML immune reconstitution inflammatory syndrome (PML-IRIS) can be devastating neurological processes associated with HIV, but limited knowledge of their characteristics in the established antiretroviral therapy (ART) era is available. We conducted a case series to evaluate the clinical course of PML and PML-IRIS at our urban safety-net hospital in Atlanta, GA. All HIV-positive individuals with a positive John Cunningham virus DNA polymerase chain reaction in the spinal fluid between May 1, 2013 to June 1, 2017 were identified from the electronic health records (EHRs) using the HIV Disease Registry. Demographics, symptom presentation, laboratory data, imaging results, treatment, and outcomes were abstracted from the EHR. PML and PML-IRIS were defined using the American Association of Neurology criteria. Of the 32 individuals identified, 6 (19%) were felt to have asymptomatic positive results. Of the remainder, 15 (58%) HIV-positive patients had PML and 11 (42%) PML-IRIS (2 with an unmasking presentation and 9 with a paradoxical presentation). The most common presenting symptoms were motor weakness (18, 69%), cognitive deficits (15, 58%), and dysarthria (11, 42%). Corticosteroids were used in 12 patients and maraviroc in 3 patients. Outcomes were dismal with 7 (47%) patients with PML and 9 (82%) with PML-IRIS dying or being referred to hospice, with median survival times of 266 days in the PML group and 109 days in the PML-IRIS group. Despite widespread access to ART, patients with PML continue to have poor outcomes, particularly among those who develop PML-IRIS. More research is needed to understand the risks for and prevention of PML-IRIS. [ABSTRACT FROM AUTHOR]
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- 2019
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6. Effect of HIV Status and Charlson Comorbidity Index on COVID-19 Clinical Outcomes in a Case-Control Study.
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Gerrity, Rebecca C., Parkinson, Melissa, Strength, Rachel, Animalu, Chinelo N., Davidson, Nathan, Fuchs, Christian J., Jackson, Christopher D., and Summers, Nathan A.
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HIV-positive persons , *COVID-19 , *HIV , *INTENSIVE care units , *LENGTH of stay in hospitals - Abstract
Objectives: During the course of the Coronavirus disease 2019 (COVID-19) pandemic, numerous comorbidities were identified as risk factors for increased morbidity and mortality. Few studies have examined human immunodeficiency virus (HIV) and COVID-19 co-infection and the impact of HIV on COVID-19 outcomes. In this study, we compared outcomes of people living with HIV with COVID-19 with a control group to examine outcomes. Methods: We identified 45 people living with HIV admitted with COVID-19 to one of three large healthcare systems in Memphis, Tennessee, between March 1 and October 31, 2020. We matched the people living with HIV in a 1:1 fashion to a control group of COVID-19-positive patients without a recorded history of HIV and compared clinical outcomes. Nine pairs were not able to be optimally matched, so a sensitivity analysis was completed by repeating the same analyses in the primary analysis while excluding the nine mismatched pairs. Results: Patients did not differ significantly in demographic variables due to the matching algorithm, and there was no significant difference in measured outcomes between people living with HIV and controls. A CD4 count of <200 cells per microliter was not significantly associated with increased morbidity or mortality. Controlling for HIV status, an elevated Charlson Comorbidity Index score of >3 was associated with increased intubation (P = 0.02), vasopressor use (odds ratio [OR] 4.81, P = 0.04), intensive care unit level of care (OR 4.37, P = 0.007), mortality (OR 7.14, P = 0.02), and length of overall hospital stay in days (P = 0.004). Conclusions: We found no difference in outcomes of people living with HIV in comparison to matched controls based on HIV status but found that an increased Charlson Comorbidity Index score led to increased morbidity and mortality regardless of HIV status. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Opioid Use Disorders in People Living with HIV/AIDS: A Review of Implications for Patient Outcomes, Drug Interactions, and Neurocognitive Disorders.
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Cernasev, Alina, Veve, Michael P., Cory, Theodore J., Summers, Nathan A., Miller, Madison, Kodidela, Sunitha, and Kumar, Santosh
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OPIOID abuse ,DRUG interactions ,AIDS ,IMMUNE reconstitution inflammatory syndrome ,DISEASES ,POTASSIUM channels - Abstract
The opioid epidemic has had a significant, negative impact in the United States, and people living with HIV/AIDS (PLWHA) represent a vulnerable sub-population that is at risk for negative sequela from prolonged opioid use or opioid use disorder (OUD). PLWHA are known to suffer from HIV-related pain and are commonly treated with opioids, leading to subsequent addictive disorders. PLWHA and OUD are at an increased risk for attrition in the HIV care continuum, including suboptimal HIV laboratory testing, delayed entry into HIV care, and initiation or adherence to antiretroviral therapy. Barriers to OUD treatment, such as medication-assisted therapy, are also apparent for PLWHA with OUD, particularly those living in rural areas. Additionally, PLWHA and OUD are at a high risk for serious drug–drug interactions through antiretroviral-opioid metabolic pathway-related inhibition/induction, or via the human ether-a-go-go-related gene potassium ion channel pathways. HIV-associated neurocognitive disorders can also be potentiated by the off-target inflammatory effects of opioid use. PLWHA and OUD might require more intensive, individualized protocols to sustain treatment for the underlying opioid addiction, as well as to provide proactive social support to aid in improving patient outcomes. Advancements in the understanding and management of PLWHA and OUD are needed to improve patient care. This review describes the effects of prescription and non-prescription opioid use in PLWHA. [ABSTRACT FROM AUTHOR]
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- 2020
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8. 980. Effects of Integrase Strand-Transfer Inhibitor Use on Lipids, Glycemic Control, and Insulin Resistance in the Women's Interagency HIV Study (WIHS).
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Aldredge, Amalia, Lahiri, Cecile D, Summers, Nathan A, Mehta, C Christina, Angert, Christine D, Kerchberger, Anne Marie, Weiser, Sheri, Konkle-Parker, Deborah, Sharma, Anjali, Adimora, Adaora A, Bolivar, Hector, French, Audrey L, Golub, Elizabeth T, Kassaye, Seble, Gustafson, Deborah, Ofotokun, Igho, and Sheth, Anandi N
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GLYCEMIC control ,INSULIN resistance ,INTEGRASE inhibitors ,LIPIDS ,HIV-positive women ,HIGH density lipoproteins - Abstract
Background Integrase strand transfer inhibitor (INSTI)-based antiretroviral therapy (ART) is recommended first-line HIV treatment. We recently demonstrated increased weight gain associated with INSTI use among women living with HIV (WLH) enrolled in the Women's Interagency HIV Study (WIHS), raising concern for cardiometabolic consequences. We, therefore, evaluated the effects of INSTI use on lipids, insulin resistance, and glycemic control in WLH. Methods Data from 2008 to 2017 were analyzed from WLH enrolled in WIHS. Women who switched to or added an INSTI to ART (SWAD group) were compared with women who remained on non-INSTI ART (STAY group). Outcomes included changes in fasting total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglycerides (TG), and glucose; hemoglobin A1c; and incident insulin resistance (defined as homeostatic model assessment of insulin resistance [HOMA] score ≥2). Outcomes were measured 6–12 months before and 6–18 months after INSTI switch/add in the SWAD group with comparable time points in the STAY group. Linear regression models compared change over time in each outcome by SWAD/STAY group, adjusted for age, race, WIHS site, income, smoking status, statin use, and ART regimen at baseline. Results In total, 881 WIHS participants (182 SWAD and 699 STAY) were followed for a mean 1.8 (±1.1) years. Mean age was 49 (±8.8) years, BMI was 31 (±8.2) kg/m
2 , and 49% were Black. At baseline, SWAD vs. STAY was more likely to report NNRTI (vs. PI)-based ART and statin use (both P < 0.0001), but all baseline lipid and glucose variables were similar. Compared with STAY, the SWAD group experienced significantly greater decreases in HDL (−2.4 vs. +0.09 mg/dL, P = 0.03) and trended toward greater decreases in TC (−2.6 vs. −2.4 mg/dL, P = 0.07) at follow-up, without significant differences in TG or LDL. The SWAD group had significantly greater increases in A1c (+0.08% vs. −0.05%, P = 0.01) but trended toward lower incidence of insulin resistance (19% vs. 32%, P = 0.05). Conclusion Despite reported increases in weight, INSTI use was associated with only modest changes in lipid measurements and glycemic control during short-term follow-up of WLH compared with non-INSTI ART. Research is needed to elucidate long-term cardiometabolic effects. Disclosures Anandi N. Sheth, MD, MS, Gilead Sciences, Inc.: Research Grant. [ABSTRACT FROM AUTHOR]- Published
- 2019
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9. Comprehensive Process Mapping and Qualitative Interviews to Inform Implementation of Rapid Linkage to HIV Care Programs in a Mid-Sized Urban Setting in the Southern United States.
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Pettit, April C., Pichon, Latrice C., Ahonkhai, Aima A., Robinson, Cedric, Randolph, Bruce, Gaur, Aditya, Stubbs, Andrea, Summers, Nathan A., Truss, Kimberly, Brantley, Meredith, Devasia, Rose, Teti, Michelle, Gimbel, Sarah, and Dombrowski, Julia C.
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Background: Rapid antiretroviral therapy (ART) initiation, in which people living with HIV start ART within days of diagnosis, is a key component of the US Ending the HIV Epidemic initiative. Setting: The Memphis Metropolitan Statistical Area ranked fourth in the United States for the highest HIV incidence per 100,000 population in 2018. Rapid ART programs are limited in the Memphis Metropolitan Statistical Area, and our objective was to identify local implementation barriers. Methods: We conducted participatory process mapping and in-depth interviews to detail steps between HIV testing at the municipal health department's Sexually Transmitted Infections Clinic and ART prescription from a nearby high-volume Ryan White-funded HIV Clinic. Results: Process mapping identified 4 modifiable, rate-limiting rapid ART barriers: (1) requiring laboratory-based confirmatory HIV results, (2) eligibility documentation requirements for Ryan White-funded services, (3) insufficient HIV Clinic medical provider availability, and (4) variability in ART initiation timing among HIV Clinic providers. Staff at both sites highlighted suboptimal communication and sense of shared management between facilities, limited resources to address important social determinants of health, and lack of Medicaid expansion in Tennessee as key barriers. In-depth interview themes negatively affecting rapid ART initiation included clinic burden; provider knowledge, attitudes, and beliefs; and client psychosocial needs. Conclusions: Our preimplementation work identified modifiable and systemic barriers to systems flow and patient-level outcomes. This work will inform the design and implementation of a locally relevant rapid ART program in Memphis, a community disproportionately affected by the HIV epidemic. [ABSTRACT FROM AUTHOR]
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- 2022
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