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1.
Int J Environ Health Res ; : 1-21, 2024 Oct 13.
Artículo en Inglés | MEDLINE | ID: mdl-39445442

RESUMEN

More than 100 million children and 13% of the adult population suffer from obesity globally. People with obesity experience higher risks of chronic illness, poor mental health outcomes, and premature death. Exposure to natural environments, including green spaces, encourages regular physical activity and cardiovascular exercise to combat obesity. This systematic review, based on the health lifestyle theory, explores previous research on the relationship between natural environments and obesity. We reviewed studies (N = 11) published between 2018 and 2023 examining the relationship between participants (N = 1,225,680) across seven countries. Two overarching areas of impact emerged: environmental health factors (air pollution) and social factors (socioeconomic status and food availability). Although many studies suggested that exposure to green spaces correlated with a lower incidence of obesity, few studies identified possible external factors to explain the relationship between green space and obesity. Implications for future policy legislation, clinical interventions, and research are presented.

2.
Artículo en Inglés | MEDLINE | ID: mdl-38950353

RESUMEN

PURPOSE: Postpartum depression (PPD) affects one in eight women in the United States. Women with HIV may be at higher risk for PPD. This systematic review examined factors related to PPD in those with HIV. METHOD: Using three databases, articles published between 2017 and 2022 were screened for eligibility, with 19 full texts reviewed and critically appraised. Ten studies from eight countries were ultimately included in the analysis. RESULTS: Using Engel's biopsychosocial model, common themes emerged within the theoretical framework: (a) biological (e.g., HIV diagnosis in pregnancy, impact on HIV adherence); (b) psychological (e.g., pregnancy intention, intimate partner violence, fear of HIV transmission, infant illness, behavior); and (c) social (e.g., socioeconomic status, lack of social support, disclosure, stigma). CONCLUSION: Living with HIV carries additional stressors for new parents that may impact mental health in the postpartum period. Nurses are in a unique position to screen for PPD early using established screening tools while paying particular attention to associated factors impacting those with HIV. [Journal of Psychosocial Nursing and Mental Health Services, xx(xx), xx-xx.].

3.
J Infect Dis ; 226(12): 2069-2078, 2022 12 13.
Artículo en Inglés | MEDLINE | ID: mdl-35732186

RESUMEN

BACKGROUND: This United States-based study compared 2 candidate vaccines: RSV/ΔNS2/Δ1313/I1314L, attenuated by NS2 gene-deletion and temperature-sensitivity mutation in the polymerase gene; and RSV/276, attenuated by M2-2 deletion. METHODS: RSV-seronegative children aged 6-24 months received RSV/ΔNS2/Δ1313/I1314L (106 plaque-forming units [PFU]), RSV/276 (105 PFU), or placebo intranasally. Participants were monitored for vaccine shedding, reactogenicity, and RSV serum antibodies, and followed over the subsequent RSV season. RESULTS: Enrollment occurred September 2017 to October 2019. During 28 days postinoculation, upper respiratory illness and/or fever occurred in 64% of RSV/ΔNS2/Δ1313/I1314L, 84% of RSV/276, and 58% of placebo recipients. Symptoms were generally mild. Cough was more common in RSV/276 recipients than RSV/ΔNS2/Δ1313/I1314L (48% vs 12%; P = .012) or placebo recipients (17%; P = .084). There were no lower respiratory illness or serious adverse events. Eighty-eight and 96% of RSV/ΔNS2/Δ1313/I1314L and RSV/276 recipients were infected with vaccine (shed vaccine and/or had ≥4-fold rises in RSV antibodies). Serum RSV-neutralizing titers and anti-RSV F IgG titers increased ≥4-fold in 60% and 92% of RSV/ΔNS2/Δ1313/I1314L and RSV/276 vaccinees, respectively. Exposure to community RSV during the subsequent winter was associated with strong anamnestic RSV-antibody responses. CONCLUSIONS: Both vaccines had excellent infectivity and were well tolerated. RSV/276 induced an excess of mild cough. Both vaccines were immunogenic and primed for strong anamnestic responses. CLINICAL TRIALS REGISTRATION: NCT03227029 and NCT03422237.


Asunto(s)
Infecciones por Virus Sincitial Respiratorio , Vacunas contra Virus Sincitial Respiratorio , Virus Sincitial Respiratorio Humano , Niño , Humanos , Anticuerpos Neutralizantes , Anticuerpos Antivirales , Tos , Vacunas contra Virus Sincitial Respiratorio/efectos adversos , Vacunas contra Virus Sincitial Respiratorio/genética , Virus Sincitiales Respiratorios , Vacunas Atenuadas/efectos adversos , Vacunas Atenuadas/genética
4.
Immunol Rev ; 284(1): 24-41, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29944754

RESUMEN

Next-generation sequencing allows the characterization of the adaptive immune receptor repertoire (AIRR) in exquisite detail. These large-scale AIRR-seq data sets have rapidly become critical to vaccine development, understanding the immune response in autoimmune and infectious disease, and monitoring novel therapeutics against cancer. However, at present there is no easy way to compare these AIRR-seq data sets across studies and institutions. The ability to combine and compare information for different disease conditions will greatly enhance the value of AIRR-seq data for improving biomedical research and patient care. The iReceptor Data Integration Platform (gateway.ireceptor.org) provides one implementation of the AIRR Data Commons envisioned by the AIRR Community (airr-community.org), an initiative that is developing protocols to facilitate sharing and comparing AIRR-seq data. The iReceptor Scientific Gateway links distributed (federated) AIRR-seq repositories, allowing sequence searches or metadata queries across multiple studies at multiple institutions, returning sets of sequences fulfilling specific criteria. We present a review of the development of iReceptor, and how it fits in with the general trend toward sharing genomic and health data, and the development of standards for describing and reporting AIRR-seq data. Researchers interested in integrating their repositories of AIRR-seq data into the iReceptor Platform are invited to contact support@ireceptor.org.


Asunto(s)
Anticuerpos/genética , Bases de Datos Genéticas , Difusión de la Información/métodos , Receptores de Antígenos de Linfocitos B/genética , Receptores de Antígenos de Linfocitos T/genética , Anticuerpos/inmunología , Genómica/métodos , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Internet
5.
N Engl J Med ; 378(17): 1593-1603, 2018 04 26.
Artículo en Inglés | MEDLINE | ID: mdl-29694825

RESUMEN

BACKGROUND: In a previous trial of antiretroviral therapy (ART) involving pregnant women with human immunodeficiency virus (HIV) infection, those randomly assigned to receive tenofovir, emtricitabine, and ritonavir-boosted lopinavir (TDF-FTC-LPV/r) had infants at greater risk for very premature birth and death within 14 days after delivery than those assigned to receive zidovudine, lamivudine, and ritonavir-boosted lopinavir (ZDV-3TC-LPV/r). METHODS: Using data from two U.S.-based cohort studies, we compared the risk of adverse birth outcomes among infants with in utero exposure to ZDV-3TC-LPV/r, TDF-FTC-LPV/r, or TDF-FTC with ritonavir-boosted atazanavir (ATV/r). We evaluated the risk of preterm birth (<37 completed weeks of gestation), very preterm birth (<34 completed weeks), low birth weight (<2500 g), and very low birth weight (<1500 g). Risk ratios with 95% confidence intervals were estimated with the use of modified Poisson models to adjust for confounding. RESULTS: There were 4646 birth outcomes. Few infants or fetuses were exposed to TDF-FTC-LPV/r (128 [2.8%]) as the initial ART regimen during gestation, in contrast with TDF-FTC-ATV/r (539 [11.6%]) and ZDV-3TC-LPV/r (954 [20.5%]). As compared with women receiving ZDV-3TC-LPV/r, women receiving TDF-FTC-LPV/r had a similar risk of preterm birth (risk ratio, 0.90; 95% confidence interval [CI], 0.60 to 1.33) and low birth weight (risk ratio, 1.13; 95% CI, 0.78 to 1.64). As compared to women receiving TDF-FTC-ATV/r, women receiving TDF-FTC-LPV/r had a similar or slightly higher risk of preterm birth (risk ratio, 1.14; 95% CI, 0.75 to 1.72) and low birth weight (risk ratio, 1.45; 95% CI, 0.96 to 2.17). There were no significant differences between regimens in the risk of very preterm birth or very low birth weight. CONCLUSIONS: The risk of adverse birth outcomes was not higher with TDF-FTC-LPV/r than with ZDV-3TC-LPV/r or TDF-FTC-ATV/r among HIV-infected women and their infants in the United States, although power was limited for some comparisons. (Funded by the National Institutes of Health and others.).


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Emtricitabina/uso terapéutico , Infecciones por VIH/tratamiento farmacológico , Recién Nacido de Bajo Peso , Complicaciones Infecciosas del Embarazo/tratamiento farmacológico , Resultado del Embarazo , Nacimiento Prematuro/epidemiología , Tenofovir/uso terapéutico , Adulto , Fármacos Anti-VIH/efectos adversos , Estudios de Cohortes , Transmisión de Enfermedad Infecciosa/prevención & control , Esquema de Medicación , Quimioterapia Combinada/efectos adversos , Emtricitabina/efectos adversos , Femenino , Humanos , Recién Nacido , Lamivudine/uso terapéutico , Lopinavir/efectos adversos , Lopinavir/uso terapéutico , Embarazo , Riesgo , Ritonavir/uso terapéutico , Tenofovir/efectos adversos , Zidovudina/uso terapéutico
6.
J Infect Dis ; 221(4): 534-543, 2020 02 03.
Artículo en Inglés | MEDLINE | ID: mdl-31758177

RESUMEN

BACKGROUND: The safety and immunogenicity of live respiratory syncytial virus (RSV) candidate vaccine, LID/ΔM2-2/1030s, with deletion of RSV ribonucleic acid synthesis regulatory protein M2-2 and genetically stabilized temperature-sensitivity mutation 1030s in the RSV polymerase protein was evaluated in RSV-seronegative children. METHODS: Respiratory syncytial virus-seronegative children ages 6-24 months received 1 intranasal dose of 105 plaque-forming units (PFU) of LID/ΔM2-2/1030s (n = 21) or placebo (n = 11). The RSV serum antibodies, vaccine shedding, and reactogenicity were assessed. During the following RSV season, medically attended acute respiratory illness (MAARI) and pre- and postsurveillance serum antibody titers were monitored. RESULTS: Eighty-five percent of vaccinees shed LID/ΔM2-2/1030s vaccine (median peak nasal wash titers: 3.1 log10 PFU/mL by immunoplaque assay; 5.1 log10 copies/mL by reverse-transcription quantitative polymerase chain reaction) and had ≥4-fold rise in serum-neutralizing antibodies. Respiratory symptoms and fever were common (60% vaccinees and 27% placebo recipients). One vaccinee had grade 2 wheezing with rhinovirus but without concurrent LID/ΔM2-2/1030s shedding. Five of 19 vaccinees had ≥4-fold increases in antibody titers postsurveillance without RSV-MAARI, indicating anamnestic responses without significant illness after infection with community-acquired RSV. CONCLUSIONS: LID/ΔM2-2/1030s had excellent infectivity without evidence of genetic instability, induced durable immunity, and primed for anamnestic antibody responses, making it an attractive candidate for further evaluation.


Asunto(s)
Eliminación de Gen , ARN Polimerasa Dependiente del ARN/genética , Infecciones por Virus Sincitial Respiratorio/prevención & control , Vacunas contra Virus Sincitial Respiratorio/inmunología , Virus Sincitial Respiratorio Humano/inmunología , Vacunación , Proteínas Virales/genética , Anticuerpos Neutralizantes/sangre , Anticuerpos Antivirales/sangre , Temperatura Corporal , Método Doble Ciego , Femenino , Humanos , Inmunogenicidad Vacunal , Lactante , Masculino , Mutación Puntual , Infecciones por Virus Sincitial Respiratorio/inmunología , Infecciones por Virus Sincitial Respiratorio/virología , Vacunas contra Virus Sincitial Respiratorio/efectos adversos , Virus Sincitial Respiratorio Humano/genética , Vacunas Atenuadas , Replicación Viral/genética
7.
J Infect Dis ; 221(12): 2050-2059, 2020 06 11.
Artículo en Inglés | MEDLINE | ID: mdl-32006006

RESUMEN

BACKGROUND: Respiratory syncytial virus (RSV) is the leading viral cause of severe pediatric respiratory illness, and vaccines are needed. Live RSV vaccine D46/NS2/N/ΔM2-2-HindIII, attenuated by deletion of the RSV RNA regulatory protein M2-2, is based on previous candidate LID/ΔM2-2 but incorporates prominent differences from MEDI/ΔM2-2, which was more restricted in replication in phase 1. METHODS: RSV-seronegative children aged 6-24 months received 1 intranasal dose (105 plaque-forming units [PFUs] of D46/NS2/N/ΔM2-2-HindIII [n = 21] or placebo [n = 11]) and were monitored for vaccine shedding, reactogenicity, RSV-antibody responses and RSV-associated medically attended acute respiratory illness (RSV-MAARI) and antibody responses during the following RSV season. RESULTS: All 21 vaccinees were infected with vaccine; 20 (95%) shed vaccine (median peak titer, 3.5 log10 PFUs/mL with immunoplaque assay and 6.1 log10 copies/mL with polymerase chain reaction). Serum RSV-neutralizing antibodies and anti-RSV fusion immunoglobulin G increased ≥4-fold in 95% and 100% of vaccines, respectively. Mild upper respiratory tract symptoms and/or fever occurred in vaccinees (76%) and placebo recipients (18%). Over the RSV season, RSV-MAARI occurred in 2 vaccinees and 4 placebo recipients. Three vaccinees had ≥4-fold increases in serum RSV-neutralizing antibody titers after the RSV season without RSV-MAARI. CONCLUSIONS: D46/NS2/N/ΔM2-2-HindIII had excellent infectivity and immunogenicity and primed vaccine recipients for anamnestic responses, encouraging further evaluation of this attenuation strategy. CLINICAL TRIALS REGISTRATION: NCT03102034 and NCT03099291.


Asunto(s)
Anticuerpos Antivirales/sangre , Infecciones por Virus Sincitial Respiratorio/prevención & control , Vacunas contra Virus Sincitial Respiratorio/inmunología , Virus Sincitial Respiratorio Humano/inmunología , Proteínas Virales/genética , Adolescente , Anticuerpos Neutralizantes/sangre , Anticuerpos Neutralizantes/inmunología , Anticuerpos Antivirales/inmunología , Niño , Eliminación de Gen , Humanos , Interacciones Hidrofóbicas e Hidrofílicas , ARN Pequeño no Traducido/química , ARN Pequeño no Traducido/genética , ARN Pequeño no Traducido/inmunología , ARN Viral/química , ARN Viral/genética , ARN Viral/inmunología , Infecciones por Virus Sincitial Respiratorio/inmunología , Infecciones por Virus Sincitial Respiratorio/virología , Vacunas contra Virus Sincitial Respiratorio/administración & dosificación , Vacunas contra Virus Sincitial Respiratorio/química , Vacunas contra Virus Sincitial Respiratorio/genética , Virus Sincitial Respiratorio Humano/genética , Vacunas Atenuadas/administración & dosificación , Vacunas Atenuadas/química , Vacunas Atenuadas/genética , Vacunas Atenuadas/inmunología
8.
J Infect Dis ; 217(9): 1338-1346, 2018 04 11.
Artículo en Inglés | MEDLINE | ID: mdl-29509929

RESUMEN

Background: Respiratory syncytial virus (RSV) is the most important viral cause of severe respiratory illness in young children and lacks a vaccine. RSV cold-passage/stabilized 2 (RSVcps2) is a modification of a previously evaluated vaccine candidate in which 2 major attenuating mutations have been stabilized against deattenuation. Methods: RSV-seronegative 6-24-month-old children received an intranasal dose of 105.3 plaque-forming units (PFU) of RSVcps2 (n = 34) or placebo (n = 16) (International Maternal Pediatric Adolescent AIDS Clinical Trials protocol P1114 and companion protocol CIR285). RSV serum neutralizing antibody titers before and 56 days after vaccination, vaccine virus infectivity (defined as vaccine virus shedding detectable in nasal wash and/or a ≥4-fold rise in serum antibodies), reactogenicity, and genetic stability were assessed. During the following RSV transmission season, participants were monitored for respiratory illness, with serum antibody titers measured before and after the season. Results: A total of 85% of vaccinees were infected with RSVcps2 (median peak titer, 0.5 log10 PFU/mL by culture and 2.9 log10 copies/mL by polymerase chain reaction analysis); 77% shed vaccine virus, and 59% developed a ≥4-fold rise in RSV-serum neutralizing antibody titers. Respiratory tract and/or febrile illness occurred at the same rate (50%) in the vaccine and placebo groups. Deattenuation was not detected at either of 2 stabilized mutation sites. Conclusions: RSVcps2 was well tolerated and moderately immunogenic and had increased genetic stability in 6-24-month-old RSV-seronegative children. Clinical Trials Registration: NCT01852266 and NCT01968083.


Asunto(s)
Anticuerpos Antivirales/sangre , Infecciones por Virus Sincitial Respiratorio/prevención & control , Vacunas contra Virus Sincitial Respiratorio/inmunología , Virus Sincitial Respiratorio Humano/genética , Anticuerpos Neutralizantes , Femenino , Humanos , Inmunogenicidad Vacunal , Lactante , Masculino , Mutación , Vacunas Atenuadas/inmunología , Replicación Viral
9.
J Infect Dis ; 217(9): 1347-1355, 2018 04 11.
Artículo en Inglés | MEDLINE | ID: mdl-29509911

RESUMEN

Background: Live respiratory syncytial virus (RSV) candidate vaccine LIDΔM2-2 is attenuated by deletion of the RSV RNA regulatory protein M2-2, resulting in upregulated viral gene transcription and antigen expression but reduced RNA replication. Methods: RSV-seronegative children ages 6-24 months received a single intranasal dose of 105 plaque forming units (PFU) of LIDΔM2-2 (n = 20) or placebo (n = 9) (NCT02237209, NCT02040831). RSV serum antibodies, vaccine infectivity, and reactogenicity were assessed. During the following RSV season, participants were monitored for respiratory illness and pre- and post-RSV season serum antibodies. Results: Vaccine virus was shed by 95% of vaccinees (median peak titers of 3.8 log10 PFU/mL by quantitative culture and 6.3 log10 copies/mL by PCR); 90% had ≥4-fold rise in serum neutralizing antibodies. Respiratory symptoms and fever were common in vaccine (95%) and placebo (78%). One vaccinee had grade 2 rhonchi concurrent with vaccine shedding, rhinovirus, and enterovirus. Eight of 19 vaccinees versus 2 of 9 placebo recipients had substantially increased RSV antibody titers after the RSV season without medically attended RSV disease, indicating anamnestic vaccine responses to wild-type RSV without significant illness. Conclusion: LIDΔM2-2 had excellent infectivity and immunogenicity, encouraging further study of vaccine candidates attenuated by M2-2 deletion. Clinical Trials Registration: NCT02237209, NCT02040831.


Asunto(s)
Anticuerpos Neutralizantes/sangre , Infecciones por Virus Sincitial Respiratorio/prevención & control , Vacunas contra Virus Sincitial Respiratorio/inmunología , Virus Sincitial Respiratorio Humano/genética , Proteínas Virales/genética , Anticuerpos Antivirales/sangre , Método Doble Ciego , Femenino , Humanos , Lactante , Masculino , Vacunas Atenuadas/inmunología , Replicación Viral
10.
Clin Infect Dis ; 63(8): 1113-1121, 2016 10 15.
Artículo en Inglés | MEDLINE | ID: mdl-27439527

RESUMEN

BACKGROUND: The International Maternal Pediatric Adolescent AIDS Clinical Trials Network (IMPAACT) P1060 study demonstrated short-term superiority of lopinavir/ritonavir (LPV/r) over nevirapine (NVP) in antiretroviral therapy (ART), regardless of prior NVP exposure. However, NVP-based ART had a marginal benefit in CD4 percentage (CD4%) and growth. We compared 5-year outcomes from this clinical trial. METHODS: Human immunodeficiency virus (HIV)-infected, ART-eligible children were enrolled into 2 cohorts based on prior NVP exposure and randomized to NVP- or LPV/r-based ART. The data safety monitoring board recommended unblinding results in both cohorts due to superiority of LPV/r for the primary endpoint: stopping randomized treatment, virologic failure (VF), or death by 6 months. Participants were offered a switch in regimens (if on NVP) and continued observational follow-up. We compared time to VF or death, death, and CD4% and growth changes using intention-to-treat analyses. Additionally, inverse probability weights were used to account for treatment switching and censoring. RESULTS: As of September 2014, 329 of the 451 (73%) enrolled participants were still in follow-up (median, 5.3 years; interquartile range [IQR], 4.3-6.4), with 52% on NVP and 88% on LPV/r as originally randomized. NVP arm participants had significantly higher risk of VF or death (adjusted hazard ratio [aHR], 1.90; 95% confidence interval [CI], 1.37-2.65) but not death alone (aHR, 1.65; 95% CI, .72-3.76) compared with participants randomized to LPV/r. Mean CD4% was significantly higher in the NVP arm up to 1 year after ART initiation, but not beyond. Mean weight-for-age z scores were marginally higher in the NVP arm, but height-for-age z scores did not differ. Similar trends were observed in sensitivity analyses. CONCLUSIONS: These findings support the current World Health Organization recommendation of LPV/r in first-line ART regimens for HIV-infected children. CLINICAL TRIALS REGISTRATION: NCT00307151.


Asunto(s)
Infecciones por VIH/tratamiento farmacológico , Lopinavir/uso terapéutico , Nevirapina/uso terapéutico , Ritonavir/uso terapéutico , Terapia Antirretroviral Altamente Activa , Recuento de Linfocito CD4 , Preescolar , Femenino , Estudios de Seguimiento , Infecciones por VIH/diagnóstico , Infecciones por VIH/inmunología , Infecciones por VIH/virología , Humanos , Lactante , Estimación de Kaplan-Meier , Masculino , Índice de Severidad de la Enfermedad , Insuficiencia del Tratamiento , Resultado del Tratamiento , Carga Viral
11.
Infect Dis Obstet Gynecol ; 2016: 9848041, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27127401

RESUMEN

Combination antiretroviral therapy (cART) is successfully used for prevention of perinatal HIV transmission. To investigate safety, we compared adverse events (AE) among infants exposed to different maternal cART regimens. We reviewed 158 HIV-uninfected infants born between 1997 and 2009, using logistic regression to model grade ≥1 AE and grade ≥3 AE as a function of maternal cART and confounding variables (preterm, C-section, illicit drug use, race, ethnicity, infant antiretrovirals, and maternal viremia). Frequently used cART regimens included zidovudine (63%), lamivudine (80%), ritonavir-boosted lopinavir (37%), nelfinavir (26%), and atazanavir (10%). At birth, anemia occurred in 13/140 infants (9%), neutropenia in 27/107 (25%), thrombocytopenia in 5/133 (4%), and liver enzyme elevation in 21/130 (16%). Corresponding rates of AE at 4 weeks were 59/141 (42%), 54/130 (42%), 3/137 (2%), and 3/104 (3%), respectively. Serious AE (grade ≥ 3) exceeded 2% only for neutropenia (13% at birth; 9% at 4 weeks). Compared with infants exposed to maternal lopinavir/ritonavir, infants exposed to nelfinavir and atazanavir had a 5-fold and 4-fold higher incidence of AE at birth, respectively. In conclusion, hematologic and hepatic AE were frequent, but rarely serious. In this predominantly protease inhibitor-treated population, lopinavir/ritonavir was associated with the lowest rate of infant AE.


Asunto(s)
Sulfato de Atazanavir/efectos adversos , Inhibidores de la Proteasa del VIH/uso terapéutico , Enfermedades del Recién Nacido/inducido químicamente , Lopinavir/efectos adversos , Nelfinavir/efectos adversos , Complicaciones Infecciosas del Embarazo/tratamiento farmacológico , Ritonavir/efectos adversos , Quimioterapia Combinada , Femenino , Inhibidores de la Proteasa del VIH/administración & dosificación , Humanos , Recién Nacido , Masculino , Embarazo , Efectos Tardíos de la Exposición Prenatal/inducido químicamente , Estudios Retrospectivos
12.
Clin Infect Dis ; 61(6): 996-1003, 2015 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-26060285

RESUMEN

BACKGROUND: Fetal bone effects of maternal tenofovir use have not been well studied. We sought to compare whole-body bone mineral content (BMC) of newborns exposed vs not exposed to tenofovir in utero. METHODS: We enrolled participants from April 2011 to June 2013 at 14 US clinical sites. Singleton infants of women with human immunodeficiency virus (HIV) infection who took tenofovir in late pregnancy (tenofovir-exposed) or no tenofovir during pregnancy (tenofovir-unexposed) were enrolled during late pregnancy or within 72 hours of birth. Infants born before 36 weeks gestation or with confirmed HIV infection were excluded. Whole-body BMC was measured in the first month of life and compared with that of the tenofovir-exposed and tenofovir-unexposed newborns, unadjusted and adjusted for covariates. RESULTS: Seventy-four tenofovir-exposed and 69 tenofovir-unexposed infants had evaluable BMC measurements. Tenofovir-exposed mothers were more likely to be married (31% vs 22%; P = .04) and to use boosted protease inhibitors (84% vs 62%; P = .004). Tenofovir-exposed newborns did not differ from unexposed newborns on mean gestational age (38.2 vs 38.1 weeks) or mean length (-0.41 vs -0.18) or weight (-0.71 vs -0.48) Z-scores. The mean (standard deviation) BMC of tenofovir-exposed infants was 12% lower than for unexposed infants (56.0 [11.8] vs 63.8 [16.6] g; P = .002). The adjusted mean bone mineral content was 5.3 g lower (95% confidence interval, -9.5, -1.2; P = .013) in the tenofovir-exposed infants. CONCLUSIONS: Maternal tenofovir use is associated with significantly lower neonatal BMC. The duration and clinical significance of this finding should be evaluated in longitudinal studies. CLINICAL TRIALS REGISTRATION: ClinicalTrials.gov NCT01310023.


Asunto(s)
Fármacos Anti-VIH/efectos adversos , Densidad Ósea , Infecciones por VIH/tratamiento farmacológico , Exposición Materna , Complicaciones Infecciosas del Embarazo/tratamiento farmacológico , Tenofovir/efectos adversos , Adulto , Fármacos Anti-VIH/uso terapéutico , Estudios Transversales , Femenino , Humanos , Recién Nacido , Embarazo , Tenofovir/uso terapéutico , Estados Unidos
13.
Pediatr Res ; 78(2): 120-7, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25938735

RESUMEN

BACKGROUND: Despite a strong statistical correlation between dietary aflatoxin B1 (AFB1)-exposure and childhood stunting, the causal mechanism remains speculative. This issue is important because of emerging interest in reduction of human aflatoxin exposure to diminish the prevalence and complications of stunting. Pediatric liver diseases cause growth impairment, and AFB1 is hepatotoxic. Thus, liver injury might mediate AFB1-associated growth impairment. We have developed a rat model of dietary AFB1-induced stunting to investigate these questions. METHODS: Newly-weaned rats were given AFB1-supplemented- or control-diets from age 3-9 wk, and then euthanized for serum- and tissue-collection. Food intake and weight were serially assessed, with tibial-length determined at the experimental endpoint. Serum AFB1-adducts, hepatic gene and protein expression, and liver injury markers were quantified using established methodologies. RESULTS: AFB1-albumin adducts correlated with dietary toxin contamination, but such contamination did not affect food consumption. AFB1-exposed animals exhibited dose-dependent wasting and stunting, liver pathology, and suppression of hepatic targets of growth hormone (GH) signaling, but did not display increased mortality. CONCLUSION: These data establish toxin-dependent liver injury and hepatic GH-resistance as candidate mechanisms by which AFB1-exposure causes growth impairment in this mammalian model. Interrogation of modifiers of stunting using this model could guide interventions in at-risk and affected children.


Asunto(s)
Aflatoxina B1/toxicidad , Dieta , Hormona del Crecimiento/fisiología , Hígado/efectos de los fármacos , Modelos Animales , Aflatoxina B1/administración & dosificación , Animales , Contaminación de Alimentos , Hígado/metabolismo , Hígado/patología , Ratas , Ratas Endogámicas F344 , Ratas Sprague-Dawley
14.
Hepatology ; 57(5): 1742-51, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23258575

RESUMEN

UNLABELLED: The studies reported here were undertaken to define the regulation and functional importance of zinc-dependent histone deacetylase (Zn-HDAC) activity during liver regeneration using the mouse partial hepatectomy (PH) model. The results showed that hepatic HDAC activity was significantly increased in nuclear and cytoplasmic fractions following PH. Further analyses showed isoform-specific effects of PH on HDAC messenger RNA (mRNA) and protein expression, with increased expression of the class I HDACs, 1 and 8, and class II HDAC4 in regenerating liver. Hepatic expression of (class II) HDAC5 was unchanged after PH; however, HDAC5 exhibited transient nuclear accumulation in regenerating liver. These changes in hepatic HDAC expression, subcellular localization, and activity coincided with diminished histone acetylation in regenerating liver. The significance of these events was investigated by determining the effects of suberoylanilide hydroxyamic acid (SAHA, a specific inhibitor of Zn-HDAC activity) on hepatic regeneration. The results showed that SAHA treatment suppressed the effects of PH on histone deacetylation and hepatocellular bromodeoxyuridine (BrdU) incorporation. Further examination showed that SAHA blunted hepatic expression and activation of cell cycle signals downstream of induction of cyclin D1 expression in mice subjected to PH. CONCLUSION: The data reported here demonstrate isoform-specific regulation of Zn-HDAC expression, subcellular localization, and activity in regenerating liver. These studies also indicate that HDAC activity promotes liver regeneration by regulating hepatocellular cell cycle progression at a step downstream of cyclin D1 induction.


Asunto(s)
Histona Desacetilasas/metabolismo , Regeneración Hepática/fisiología , Hígado/metabolismo , Zinc/metabolismo , Animales , Ciclo Celular/efectos de los fármacos , Ciclina D1/metabolismo , Hepatectomía , Inhibidores de Histona Desacetilasas/farmacología , Histona Desacetilasas/efectos de los fármacos , Ácidos Hidroxámicos/farmacología , Regeneración Hepática/efectos de los fármacos , Masculino , Ratones , Ratones Endogámicos C57BL , Modelos Animales , Vorinostat
15.
J Eval Clin Pract ; 30(6): 1029-1033, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38783690

RESUMEN

In the complex landscape of health care, the relationship between medical practice and health insurance is increasingly crucial for effective care delivery. This paper emphasises the importance of integrating health insurance education into medical training, focusing on its impact on patient outcomes, health care accessibility, and system sustainability. It posits that health care providers with a comprehensive understanding of health insurance can offer more informed, efficient care by adeptly navigating coverage complexities. The study utilised a pretest-post-test design with a yearlong health insurance education curriculum at Wake Forest University School of Medicine. Student participants from various medical programmes self-assessed their knowledge and comfort across 13 health insurance topics before and after the intervention. The curriculum included workshops and a capstone project, emphasising real-life patient insurance challenges. Results show statistically significant improvements in 13 participants' understanding of health insurance concepts, highlighting the curriculum's effectiveness. The findings advocate for the inclusion of health insurance education in medical curricula. Such knowledge is vital in systems with diverse insurance models, like the United States, where understanding insurance intricacies is key to patient care. The study's limitations, such as a small sample size and reliance on self-reported data, suggest the need for further research with more participants and objective measures. In conclusion, incorporating health insurance education into medical training is essential for preparing health care professionals to navigate insurance complexities, make informed treatment decisions, and guide patients effectively. This approach fosters well-rounded professionals capable of managing both medical and financial aspects of patient care, leading to more equitable and efficient health care delivery. Future research should explore the long-term effects of this education on clinical practice and patient outcomes, particularly its impact on health care costs and patient satisfaction.


Asunto(s)
Curriculum , Seguro de Salud , Humanos , Masculino , Femenino , Personal de Salud/educación , Estudiantes de Medicina/estadística & datos numéricos , Adulto , Conocimientos, Actitudes y Práctica en Salud , Estados Unidos
16.
Nurs Clin North Am ; 59(2): 309-327, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38670697

RESUMEN

This article summarizes the updated guidelines on breastfeeding with HIV with an emphasis on using relational decision-making and intellectual humility to support the conversation around infant feeding choices. The complex cultural experiences and historical disparities that influence these decisions are highlighted, along with an overview of the recent changes to recommendations for breastfeeding in people with HIV. The article describes individualized clinical scenarios that consider infant feeding decisions, outlines communication and support strategies for health care providers, and proposes a relational decision-making model to guide discussions on infant feeding options.


Asunto(s)
Lactancia Materna , Toma de Decisiones , Infecciones por VIH , Transmisión Vertical de Enfermedad Infecciosa , Humanos , Lactancia Materna/psicología , Infecciones por VIH/psicología , Lactante , Femenino , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Recién Nacido , Guías de Práctica Clínica como Asunto
17.
J Assoc Nurses AIDS Care ; 35(5): 456-459, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39042495

RESUMEN

ABSTRACT: This article addresses the challenge of vaccine hesitancy among people with HIV (PWH), emphasizing the need for research on the potential impact of trust and intellectual humility in health care. It underscores the complexity of vaccine acceptance in PWH and the urgency of addressing hesitancy in PWH ahead of a future HIV vaccine. The article identifies trust in health care providers as a critical factor influencing vaccine uptake and proposes that providers who demonstrate intellectual humility-openly recognizing the limits of their knowledge-might enhance patient trust. The role of nurses is spotlighted because of their social positioning in the patient experience. The article advocates for interventions tailored to PWH's unique experiences and attitudes. Such strategies are essential for improving vaccine uptake and, consequently, public health outcomes.


Asunto(s)
Infecciones por VIH , Confianza , Humanos , Infecciones por VIH/psicología , Vacilación a la Vacunación/psicología , Vacunación/psicología , Aceptación de la Atención de Salud/psicología , Vacunas contra el SIDA/administración & dosificación , Personal de Salud/psicología , Conocimientos, Actitudes y Práctica en Salud
18.
J Osteopath Med ; 124(10): 429-435, 2024 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-38837124

RESUMEN

CONTEXT: Fryette's mechanics is taught as a simplistic model of coupled vertebral movement, fundamental in osteopathic practice. This study seeks to better understand the likelihood of Fryette's model by calculating vertebral orientation in computed tomography (CT) scans. Given previous findings of low angular coupled movements during overall spinal motion, static calculations provide a unique perspective on the likelihood of Fryette's mechanics. OBJECTIVES: This analysis aims to evaluate the efficacy of Fryette's principles in predicting vertebral positioning in CT scans by comparing their 3-dimensional (3D) orientation to movements described by Fryette. METHODS: 3D models of 953 thoracic and lumbar vertebrae were obtained from 82 CT scans within the VerSe`20 open-source dataset. A stepwise algorithm generated three unique symmetry planes for each vertebra, offering 3D angular orientation with respect to the vertebral level below. A total of 422 vertebrae were omitted from the analysis due to the presence of pathologies significant enough to affect their motion, inaccurate symmetry plane calculations, or absence of vertebral level below. The remaining 531 vertebra were analyzed to compare quantitative coupled positioning against expected coupled spinal movements in line with Fryette's mechanics. One-sample proportional z-scoring was implemented for all vertebral levels with an ∝=0.05 and a null hypothesis of Fryette's primed positioning occurring by chance of 50 %. Further analysis was performed with individual z-scoring for each individual level to see which levels were statistically significant. RESULTS: Data from the VerSe`20 dataset revealed that 56.9 % of successfully analyzed vertebrae demonstrated positions compatible with Fryette's mechanics (p=0.0014, power=89 %). The 302 vertebral levels that did display coupled positioning consisted of Type I (166 vertebrae) and Type II (136 vertebrae) compatible with Fryette's mechanics. Levels that demonstrated statistical significance consisted of T5 (p=0, power=99 %), T6 (p=0.0023, power=77 %), T7 (p=0.041, power=46 %), and T10 (p=0.017, power=60 %). CONCLUSIONS: Our analysis suggests that the static positions of vertebrae in CT scans may align with Fryette's descriptions, although not very often. Notably, vertebral levels T5-T7 and T10 exhibit strong evidence of their static positions aligning with expected movements, warranting further investigation into the Fryette phenomenon at these levels. Future studies should explore the dynamic implications of these findings to enhance our understanding of spinal biomechanics.


Asunto(s)
Imagenología Tridimensional , Vértebras Lumbares , Vértebras Torácicas , Tomografía Computarizada por Rayos X , Humanos , Tomografía Computarizada por Rayos X/métodos , Vértebras Lumbares/diagnóstico por imagen , Imagenología Tridimensional/métodos , Vértebras Torácicas/diagnóstico por imagen , Fenómenos Biomecánicos/fisiología , Masculino , Femenino , Movimiento/fisiología , Persona de Mediana Edad , Adulto , Algoritmos , Columna Vertebral/diagnóstico por imagen , Columna Vertebral/fisiología , Columna Vertebral/anatomía & histología , Anciano
19.
J Pediatr Health Care ; 38(4): 520-543, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38284964

RESUMEN

INTRODUCTION: The pediatric nurse practitioner (PNP) workforce was designed to improve child health equity. We aimed to systematically review the evidence on facilitators and barriers to PNP practice. METHOD: We included empirical studies on PNP practice in the United States and excluded studies with non-identifiable PNP data. We applied Joanna Briggs Institute tools to appraise studies and applied critical interpretive synthesis principles to synthesize. RESULTS: The final sample is 26 studies, mostly published before 2013 and observational. Prescriptive privileges, training program availability, organizational climate, and telehealth are facilitators. Mandated physician supervision, reduced pediatric curricula, geographically disparate training programs, and poor data infrastructure are barriers. The sample is limited by a moderate to high risk of bias. DISCUSSION: Evidence suggests modifiable factors impact PNP practice and could have important implications for child health equity. We offer a theoretical model to guide robust research studying the PNP workforce and health equity.


Asunto(s)
Profesionales de Enfermería Pediátrica , Humanos , Estados Unidos , Niño , Enfermería Pediátrica/educación , Enfermeras Practicantes/educación
20.
Artículo en Inglés | MEDLINE | ID: mdl-39276194

RESUMEN

PURPOSE OF REVIEW: The aim of this review is to aggregate currently available literature as it pertains to treating surgical shoulder pathology in patients with osteoporosis. RECENT FINDINGS: Emerging data surrounding perioperative use of anti-osteoporosis medications for patients undergoing shoulder surgery have not shown definitively favorable or unfavorable outcomes. Similar evaluations in animal studies have shown promising results as a biologic augment to tendon and bone healing, especially with newer, anabolic agents. The mainstay of bone health management remains pre-operative evaluation, using opportunistic radiographic and CT based validated measurements, along with optimization of risk factors. Surgical techniques continue to incorporate implants that perform well in osteopenic bone. Promising pre-clinical studies have identified anabolic anti-osteoporosis medications as viable biologic augments to shoulder surgery, which has not been borne out in any clinical studies at this time.

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