Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 138
Filtrar
Más filtros

Banco de datos
Tipo del documento
Intervalo de año de publicación
1.
J Obstet Gynaecol Res ; 50(7): 1268-1272, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38720638

RESUMEN

Pregnancy-associated atypical hemolytic uremic syndrome (P-aHUS) is a rare disease. There are only few reports in the literature, and most are in the puerperium period. It is a thrombotic microangiopathy (TMA) characterized for microangiopathic hemolytic anemia, thrombocytopenia, and renal dysfunction. We report the case of a pregnant patient at 26.3 gestation weeks, who developed clinical features of TMA, neurological alterations, and septic shock; then after fetus and placental delivery, no clinical improvement was observed; a diagnostic protocol was performed due to suspicion of P-aHUS, showing improvement after the plasma exchange sessions and eculizumab. We present here a brief review of the case since it is an entity that needs to be suspected during pregnancy when TMA features and requires an immediate diagnosis to provide timely treatment.


Asunto(s)
Síndrome Hemolítico Urémico Atípico , Humanos , Femenino , Embarazo , Síndrome Hemolítico Urémico Atípico/terapia , Síndrome Hemolítico Urémico Atípico/diagnóstico , Adulto , Intercambio Plasmático , Anticuerpos Monoclonales Humanizados/uso terapéutico , Anticuerpos Monoclonales Humanizados/administración & dosificación , Complicaciones Hematológicas del Embarazo/terapia , Complicaciones Hematológicas del Embarazo/diagnóstico
2.
Clin Infect Dis ; 2023 Dec 05.
Artículo en Inglés | MEDLINE | ID: mdl-38051643

RESUMEN

BACKGROUND: Twenty-three percent of people with HIV (PWH) die within 6-months of hospital discharge. We tested the hypothesis whether a series of structured home visits could reduce mortality. METHODS: We designed a disease neutral home visit package with up to 6 home visits starting 1-week post-hospitalization and every 2 weeks thereafter. The home visit team used a structured assessment algorithm to evaluate and triage social and medical needs of the participant and provide nutritional support. We compared all-cause mortality 6-months following discharge for the intervention compared to usual care in a pilot randomized trial conducted in South Africa. To inform potential scale-up we also included and separately analyzed a group of people without HIV (PWOH). RESULTS: We enrolled 125 people with HIV and randomized them 1:1 to the home visit intervention or usual care. Fourteen were late exclusions because of death prior to discharge or delayed discharge leaving 111 for analysis. The median age was 39 years, 31% were men; and 70% had advanced HIV disease. At six months among PWH 4 (7.3%) in the home visit arm and 10 (17.9%) in the usual care arm (p = 0.09) had died. Among the 70 PWOH enrolled overall 6-month mortality was 10.1%. Of those in the home visit arm, 91% received at least one home visit. CONCLUSIONS: We demonstrated feasibility of delivering post-hospital home visits and demonstrated preliminary efficacy among PWH with a substantial, but not statistically significant, effect size (59% reduction in mortality). COVID-19 related challenges resulted in under-enrollment.

3.
Emerg Infect Dis ; 29(5): 992-996, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36821867

RESUMEN

Heartland virus (HRTV) disease is an emerging tickborne illness in the midwestern and southern United States. We describe a reported fatal case of HRTV infection in the Maryland and Virginia region, states not widely recognized to have human HRTV disease cases. The range of HRTV could be expanding in the United States.


Asunto(s)
Infecciones por Bunyaviridae , Phlebovirus , Virosis , Estados Unidos/epidemiología , Humanos , Infecciones por Bunyaviridae/diagnóstico , Phlebovirus/genética , Mid-Atlantic Region
4.
Harm Reduct J ; 20(1): 90, 2023 07 21.
Artículo en Inglés | MEDLINE | ID: mdl-37480041

RESUMEN

BACKGROUND: Opioid use disorder (OUD) is overrepresented among people with criminal justice involvement; HIV is a common comorbidity in this population. This study aimed to examine how formerly incarcerated men living with HIV and OUD in South Africa experienced HIV and OUD services in correctional facilities and the community. METHODS: Three focus group discussions were conducted with 16 formerly incarcerated men living with HIV and OUD in Gauteng, South Africa. Discussions explored available healthcare services in correctional facilities and the community and procedural and practice differences in health care between the two types of settings. Data were analyzed thematically, using a comparative lens to explore the relationships between themes. RESULTS: Participants described an absence of medical services for OUD in correctional facilities and the harms caused by opioid withdrawal without medical support during incarceration. They reported that there were limited OUD services in the community and that what was available was not connected with public HIV clinics. Participants perceived correctional and community HIV care systems as readily accessible but suggested that a formal system did not exist to ensure care continuity post-release. CONCLUSIONS: OUD was perceived to be medically unaddressed in correctional facilities and marginally attended to in the community. In contrast, HIV treatment was widely available within the two settings. The current model of OUD care in South Africa leaves many of the needs of re-entrants unmet. Integrating harm reduction into all primary care medical services may address some of these needs. Successful HIV care models provide examples of approaches that can be applied to developing and expanding OUD services in South Africa.


Asunto(s)
Infecciones por VIH , Trastornos Relacionados con Opioides , Humanos , Masculino , Analgésicos Opioides , Derecho Penal , Sudáfrica , Trastornos Relacionados con Opioides/complicaciones , Trastornos Relacionados con Opioides/terapia , Infecciones por VIH/complicaciones
5.
AIDS Care ; 34(10): 1347-1354, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-34668791

RESUMEN

Social networks and social support are important factors in medication adherence among people living with HIV (PLWH). Social networks can provide emotional, logistic, and material support leading to increased overall engagement in care. Certain populations of PLWH may have more limited access to social support, including those reentering community settings from correctional facilities. During periods of incarceration, social connections with family and friends may be frayed, reduced, or lost. This study, conducted in South Africa, explored the role of social support during community reentry among PLWH being released from correctional facilities. We conducted in-depth interviews with 41 community reentrants living with HIV. Qualitative analysis identified the challenges with establishing social support during reentry and the greater need for social support to remain engaged in HIV care in the community compared to in the correctional facility. These findings highlight challenges during community reentry and the importance of social support for these individuals.


Asunto(s)
Infecciones por VIH , Instalaciones Correccionales , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/psicología , Humanos , Cumplimiento de la Medicación , Apoyo Social , Sudáfrica/epidemiología
6.
BMC Health Serv Res ; 22(1): 1092, 2022 Aug 26.
Artículo en Inglés | MEDLINE | ID: mdl-36028825

RESUMEN

BACKGROUND: Correctional settings in South Africa have disproportionately high rates of HIV infection; a large number of inmates living with HIV return to the community each year. The transition community adherence club (TCAC) intervention was a differentiated care delivery approach with structural and peer components designed to increase antiretroviral therapy (ART) adherence and HIV care engagement following release from incarceration. The objective of this study was to assess the acceptability of the TCAC intervention among HIV-infected community re-entrants to inform program revisions and future intervention designs. METHODS: This was a qualitative study set within a randomized controlled trial (RCT) of the TCAC intervention in South Africa. We conducted semi-structured, in-depth interviews with 16 re-entrants living with HIV and assigned to the intervention arm. All interviews were audio-recorded, transcribed, translated, and de-identified. Transcripts were coded and analyzed using content analysis, and acceptability was assessed using the Theoretical Framework of Acceptability (TFA). RESULTS: Overall, study participants reported that the TCAC intervention was acceptable. Development of supportive relationships between participants, non-judgmental attitudes from peer-facilitators, and perceived effectiveness of the intervention to support ART adherence and HIV care were noted as the most valued components. An altruistic desire to help other participants facing similar post-incarceration and HIV-related challenges was a key motivator for TCAC attendance. A lack of access to reliable transportation to intervention sites and clinic-based medication collection were described as burdens to program participation. Illicit drug use by other group members and negative social influences were also identified as potential barriers to optimal program engagement. CONCLUSION: The TCAC was a well-accepted model of differentiated care delivery among re-entrants living with HIV in South Africa. To further enhance intervention acceptability for future scale-ups, program revisions should address logistical barriers related to reaching TCAC sites and implementing ART distribution at TCAC group sessions.


Asunto(s)
Infecciones por VIH , Prisioneros , Antirretrovirales , Humanos , Cumplimiento de la Medicación , Sudáfrica
7.
BMC Health Serv Res ; 22(1): 629, 2022 May 11.
Artículo en Inglés | MEDLINE | ID: mdl-35546234

RESUMEN

BACKGROUND: Delays in the implementation of evidence-based practices are significant and ubiquitous, compromising health outcomes. Resistance to change is a key factor in hindering adoption and integration of new evidence-based interventions. This study seeks to understand the impact of exposure to HIV testing within a research context on provider attitudes towards HIV counselling and testing (HCT) in emergency departments (ED). METHODS: This is a pre-and-post study design measuring the effect of a new ED-based HCT intervention, conducted by lay counsellors, on provider attitudes in Eastern Cape, South Africa. A validated, anonymized, 7-item survey was self-completed by routine care providers (physicians, nurses, and case managers). Questions were scored on a 5-point Likert scale with 5 consistently reflecting a positive attitude. Mean scores were calculated for each question and compared using a two-sample t-test to assess change in sample means for attitudes among providers surveyed before and after the intervention. RESULTS: A total of 132 surveys were completed across three EDs. Majority of respondents were female (70.5%), 20-29 years old (37.9%), of African race (81.1%), nurses (39.4%), and practicing medicine for 0-4 years (37.9%). Pre-intervention, providers displayed a positive attitude towards 'the benefit of offering ED-based HCT to patients' (4.33), 'the ED offering HCT' (3.53), 'all ED patients receiving HCT' (3.42), 'concern about patient reaction to HCT' (3.26), and 'comfort with disclosing HCT results' (3.21); and a mildly negative attitude towards 'only high-risk ED patients receiving HCT' (2.68), and 'the burden of offering HCT in a clinical environment' (2.80). Post-intervention, provider attitudes improved significantly towards 'all ED patients receiving HCT' (3.86, p < 0.05), 'only high-risk ED patients receiving HCT' (2.30, p < 0.05), 'the burden of offering HCT in a clinical environment' (3.21, p < 0.05), and 'comfort with disclosing HCT results' (3.81, p < 0.05). CONCLUSIONS: Controlled exposure to new practices with a structured implementation period can shift attitudes beginning a process of practice normalization. In our study, we observed improvements in provider attitudes regarding the benefits of HCT and the burden of offering HCT to all patients in the ED. Research activities may have a role in mitigating resistance to change and supporting intervention adoption.


Asunto(s)
Actitud del Personal de Salud , Infecciones por VIH , Adulto , Consejo , Servicio de Urgencia en Hospital , Femenino , Infecciones por VIH/terapia , Prueba de VIH , Humanos , Masculino , Adulto Joven
8.
Curr HIV/AIDS Rep ; 18(3): 186-197, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33709323

RESUMEN

PURPOSE OF REVIEW: Given the growth in HIV-related implementation research, there is a need to expand the workforce and rigor through implementation science (IS) training and mentorship. Our objective is to review IS training opportunities for HIV-focused researchers and describe the approach and lessons learned from a recent HIV-related implementation research training initiative. RECENT FINDINGS: IS training opportunities range from degree programs to short- and longer-term professional development institutes and community-focused institutional trainings. Until recently, there have not been extensive dedicated opportunities for implementation research training for HIV-focused investigators. To meet this gap, an inter-Center for AIDS Research IS Fellowship for early-stage investigators was launched in 2019, building on lessons learned from dissemination and implementation training programs. Key components of the HIV-focused IS fellowship include didactic training, mentorship, grant-writing, and development of HIV-IS collaborative networks. Fellows to-date were two-thirds junior faculty and one-third post-doctoral fellows, the majority (69%) with prior public health training. Perceived value of the program was high, with a median rating of 9 [IQR 8-9] on a 10-point scale. Overall, 22/27 (81%) Fellows from the first cohort submitted IS-related grants within 12 months of Fellowship completion, and by 1 year 13 grants had been funded among 10 investigators, 37% overall among Fellows. Mentors identified framing of IS questions as the top-ranked training priority for HIV-investigators. Increasing knowledge of the utility of IS may support more grants focused on optimal implementation of HIV treatment and prevention strategies. Experiences from mentors and trainees engaged in an IS-focused fellowship for HIV investigators demonstrate the demand and value of a dedicated training program and reinforce the importance of mentorship.


Asunto(s)
Infecciones por VIH , Becas , Infecciones por VIH/prevención & control , Humanos , Ciencia de la Implementación , Mentores
9.
AIDS Behav ; 25(1): 182-190, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-32607914

RESUMEN

We conducted a discrete choice experiment (DCE) and quantified preferences for HIV testing among South African youth (Nov 2018 to Mar 2019). Six attributes and levels were identified through qualitative methods: source of HIV information; incentive amount and type; social support; testing method; and location. Each participant chose one of two options that comprised six attributes across 18 questions. Conditional logistic regression estimated the degree of preference [ß]. Of 130 participants, median age was 21 years (interquartile range 19-23 years), majority female (58%), and 85% previously tested for HIV. Testing alone over accompanied by a friend (ß = 0.22 vs. - 0.35; p < 0.01); SMS text over paper brochures (ß = 0.13 vs. - 0.10; p < 0.01); higher incentive values (R50) over no incentive (ß = 0.09 vs. - 0.07; p = 0.01); and food vouchers over cash (ß = 0.06 vs. ß = - 0.08; p = 0.01) were preferred. Testing at a clinic or home and family encouragement were important. Tailoring HTS to youth preferences may increase HIV testing.


Asunto(s)
Infecciones por VIH , Prueba de VIH , Adolescente , Adulto , Factores de Edad , Conducta de Elección , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/psicología , Promoción de la Salud , Humanos , Motivación , Prioridad del Paciente , Sudáfrica , Adulto Joven
10.
AIDS Behav ; 25(5): 1583-1596, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33241450

RESUMEN

Early identification of people living with HIV (PLHIV) and subsequent engagement into HIV treatment is a key to reducing HIV-related illness, HIV-related deaths, and HIV transmission through universal test and treat approaches. With the scale-up of antiretroviral therapy (ART) programmes, counselling that is provided immediately after the diagnosis of HIV (post-test counselling) is well placed to facilitate linkage to care and ART initiation. We sought to assess whether the current delivery of post-test counselling in a routine HIV programme was aligned with the goals of universal test and treat as articulated in local and international HIV testing service guidelines. We analysed transcripts of 40 post-test counselling sessions for HIV-positive clients, performed by 34 counsellors in ten public sector health facilities in the Ekurhuleni District of South Africa. We used thematic analysis to identify key aspects of counselling techniques and content provided to the client. We identified five key themes of counselling messages: (1) specific behaviour changes that are required to maintain or improve health when living with HIV, (2) the benefits of ART, (3) behaviour changes required for ART to be effective, (4) the need for clients to disclose their HIV status, and (5) a need for caution with ART due to a wide range of severe side effects. The counselling sessions were highly didactic, which limited the opportunities for clients to express concerns or counsellors to address client's needs during the counselling session. Based on our observations, a substantial re-adjustment is needed to deliver best-practice counselling. This may include a combination of digital media-based counselling, counselling scripts, and truly client-centred counselling for a sub-set of individuals who are at risk of not linking to care, or not initiated ART within a specified period.


Asunto(s)
Objetivos , Infecciones por VIH , Consejo , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Humanos , Internet , Sudáfrica
11.
Future Oncol ; 17(30): 3965-3976, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34287064

RESUMEN

Aim: This real-world analysis evaluated docetaxel plus nintedanib in patients with advanced pulmonary adenocarcinoma after chemotherapy and immune checkpoint inhibitor failure, for whom treatment options are limited. Methods: Data were sourced retrospectively from seven German centers. Results: Of 93 patients, overall response rate was 41.4% (disease control rate: 75.9%). Of 57 patients given third-line docetaxel plus nintedanib, overall response rate was 50.0% (disease control rate: 82.7%). Median overall survival following third-line docetaxel plus nintedanib was 8.4 months. Adverse events were consistent with the known safety profile of docetaxel plus nintedanib. Conclusion: To date, this was the largest retrospective, real-world analysis of docetaxel plus nintedanib after chemotherapy-immunotherapy failure, indicating that docetaxel plus nintedanib offers meaningful clinical benefits in this setting.


Lay abstract The standard of care for patients with lung adenocarcinoma has advanced with the introduction of immunotherapy in the first-line setting. However, limited clinical data are available to help guide treatment decisions after failure of chemotherapy and immunotherapy. Nintedanib is an oral antiangiogenic agent that is approved in the EU and other countries in combination with docetaxel for the treatment of patients with advanced/metastatic lung adenocarcinoma after first-line chemotherapy. This study is a retrospective, real-world analysis of docetaxel plus nintedanib in 93 patients with advanced lung adenocarcinoma who progressed on immunotherapy (either in sequence or in combination with chemotherapy). The results suggest that docetaxel plus nintedanib offers a meaningful clinical benefit in this setting. Safety findings were generally consistent with the known safety profile of docetaxel plus nintedanib.


Asunto(s)
Adenocarcinoma del Pulmón/tratamiento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Docetaxel/administración & dosificación , Inhibidores de Puntos de Control Inmunológico/uso terapéutico , Indoles/administración & dosificación , Neoplasias Pulmonares/tratamiento farmacológico , Adenocarcinoma del Pulmón/mortalidad , Adulto , Anciano , Anciano de 80 o más Años , Docetaxel/efectos adversos , Femenino , Humanos , Indoles/efectos adversos , Neoplasias Pulmonares/mortalidad , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Insuficiencia del Tratamiento
12.
Clin Infect Dis ; 71(6): 1419-1426, 2020 09 12.
Artículo en Inglés | MEDLINE | ID: mdl-31631221

RESUMEN

BACKGROUND: Both pregnancy and human immunodeficiency virus (HIV) increase the risk of tuberculosis disease, which results in poor maternal, pregnancy, and infant outcomes. Isoniazid preventive therapy (IPT) reduces mortality among individuals living with HIV in high-burden settings but has recently been associated with adverse pregnancy outcomes when initiated during pregnancy. METHODS: In this secondary analysis, we used multivariable logistic regression to evaluate the association between IPT exposure and adverse pregnancy outcomes (fetal demise, prematurity, low birth weight, congenital anomaly) in pregnant women living with HIV enrolled as controls in the Tshepiso study, a prospective observational cohort of pregnant women living with HIV with and without tuberculosis disease in Soweto, South Africa, from 2011-2014. RESULTS: There were 151 women enrolled with known pregnancy outcomes; 69 (46%) reported IPT initiation during pregnancy. Of the 69 IPT-exposed women, 11 (16%) had an adverse pregnancy outcome compared with 23 (28%) IPT-unexposed women. The adjusted odds of having an adverse pregnancy outcome was 2.5 (95% confidence interval, 1.0-6.5; P = .048) times higher in IPT-unexposed women compared with IPT-exposed women after controlling for maternal age, CD4 count, viral load, antiretroviral regimen, body mass index, and anemia. CONCLUSIONS: IPT exposure during pregnancy was not negatively associated with pregnancy outcomes after controlling for demographic, clinical, and HIV-related factors. These results provide some reassurance that IPT can be safely used in the second or third trimester of pregnancy. Additional research is needed to evaluate the safety of IPT and new short-course tuberculosis preventive therapies during pregnancy.


Asunto(s)
Infecciones por VIH , Isoniazida , Antituberculosos/uso terapéutico , Femenino , VIH , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Humanos , Lactante , Recién Nacido , Isoniazida/uso terapéutico , Embarazo , Resultado del Embarazo , Sudáfrica/epidemiología
13.
Curr HIV/AIDS Rep ; 17(5): 438-449, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32779099

RESUMEN

PURPOSE: Despite evidence of disproportionate burden of HIV and mental health disorders among incarcerated people, scarce services exist to address common mental health disorders, including major depressive and anxiety disorders, post-traumatic stress disorder, and substance use disorders, among incarcerated people living with HIV (PLHIV) in sub-Saharan Africa (SSA). This paper aims to summarize current knowledge on mental health interventions of relevance to incarcerated PLHIV and apply implementation science theory to highlight strategies and approaches to deliver mental health services for PLHIV in correctional settings in SSA. RECENT FINDINGS: Scarce evidence-based mental health interventions have been rigorously evaluated among incarcerated PLHIV in SSA. Emerging evidence from low- and middle-income countries and correctional settings outside SSA point to a role for cognitive behavioral therapy-based talking and group interventions implemented using task-shifting strategies involving lay health workers and peer educators. Several mental health interventions and implementation strategies hold promise for addressing common mental health disorders among incarcerated PLHIV in SSA. However, to deliver these approaches, there must first be pragmatic efforts to build corrections health system capacity, address human rights abuses that exacerbate HIV and mental health, and re-conceptualize mental health services as integral to quality HIV service delivery and universal access to primary healthcare for all incarcerated people.


Asunto(s)
Infecciones por VIH/psicología , Ciencia de la Implementación , Trastornos Mentales/psicología , Servicios de Salud Mental , Prisioneros/psicología , África del Sur del Sahara , Trastorno Depresivo Mayor , Programas de Gobierno , Humanos , Salud Mental/estadística & datos numéricos , Trastornos Relacionados con Sustancias
14.
BMC Public Health ; 20(1): 324, 2020 Mar 12.
Artículo en Inglés | MEDLINE | ID: mdl-32164628

RESUMEN

BACKGROUND: We sought to describe linkage to care, ART continuity, and factors associated with linkage to care among people with HIV following release from incarceration in South Africa. METHODS: We conducted a study of South African correctional service community reentrants who were receiving ART at the time of release. The study was implemented in three of 46 correctional service management areas. Participants were enrolled prior to corrections release and followed up to 90 days post-release to obtain self-reported linkage to care status and number of days of ART provided at corrections release. Clinic electronic and paper charts were sought and abstracted to verify self-reported linkage to care. Log-binomial regression, adjusted for facility, was used to identify associations with post-release linkage to care (self-reported and verified). We sought to specifically assess for associations with HIV diagnosis during index incarceration, ART initiation during index incarceration, and duration of incarceration. RESULTS: From May 2014 to December 2016, 554 inmates met eligibility and 516 (93%) consented to participate; 391 were released on ART, 40 of whom were excluded from analysis post-release. Of the remaining 351, 301 (86%) were men and the median age was 35 years (interquartile range 30, 40). Linkage to care was self-reported by 227 (64%) and linkage to care could be verified for 121 (34%). At most, 47% of participants had no lapse in ART supply. Initiating ART during the index incarceration showed a trend toward increased self-reported post-release linkage to care. Age > 35 years was associated with increased verified linkage to care while HIV diagnosis outside of a correctional setting and ART initiation during the index incarceration showed trends toward association with increased verified linkage to care. DISCUSSION: The results of our study are the first description of retention in care following correctional facility release from an African setting and indicate high levels of attrition during the transition from correctional facility to community care. Initiating ART within a correctional facility did not impair post-release linkage to care.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Continuidad de la Atención al Paciente/estadística & datos numéricos , Infecciones por VIH/tratamiento farmacológico , Prisioneros/estadística & datos numéricos , Adolescente , Adulto , Femenino , Humanos , Masculino , Sudáfrica , Adulto Joven
15.
BMC Cancer ; 19(1): 1181, 2019 Dec 03.
Artículo en Inglés | MEDLINE | ID: mdl-31796022

RESUMEN

BACKGROUND: While colorectal cancer (CRC) patients with localized disease have a favorable prognosis, the five-year-survival rate in patients with distant spread is still below 15%. Hence, a detailed understanding of the mechanisms regulating metastasis formation is essential to develop therapeutic strategies targeting metastasized CRC. The notch pathway has been shown to be involved in the metastatic spread of various tumor entities; however, the impact of its target gene HEYL remains unclear so far. METHODS: In this study, we functionally assessed the association between high HEYL expression and metastasis formation in human CRC. Therefore, we lentivirally overexpressed HEYL in two human patient-derived CRC cultures differing in their spontaneous metastasizing capacity and analyzed metastasis formation as well as tumor cell dissemination into the bone marrow after xenotransplantation into NOD.Cg-Prkdcscid Il2rgtm1Wjl/SzJ (NSG) mice. RESULTS: HEYL overexpression decreased tumor cell dissemination and the absolute numbers of formed metastases in a sub-renal capsular spontaneous metastasis formation model, addressing all steps of the metastatic cascade. In contrast, metastatic capacity was not decreased following intrasplenic xenotransplantation where the cells are placed directly into the blood circulation. CONCLUSION: These results suggest that HEYL negatively regulates metastasis formation in vivo presumably by inhibiting intravasation of metastasis-initiating cells.


Asunto(s)
Factores de Transcripción con Motivo Hélice-Asa-Hélice Básico/metabolismo , Neoplasias de la Médula Ósea/secundario , Neoplasias Colorrectales/patología , Proteínas Represoras/metabolismo , Esferoides Celulares/patología , Animales , Factores de Transcripción con Motivo Hélice-Asa-Hélice Básico/genética , Biomarcadores de Tumor/genética , Biomarcadores de Tumor/metabolismo , Neoplasias de la Médula Ósea/genética , Neoplasias de la Médula Ósea/metabolismo , Línea Celular Tumoral , Proliferación Celular/fisiología , Neoplasias Colorrectales/genética , Neoplasias Colorrectales/metabolismo , Femenino , Xenoinjertos , Humanos , Masculino , Ratones , Ratones Endogámicos NOD , Ratones SCID , Receptor Notch1/metabolismo , Proteínas Represoras/genética , Esferoides Celulares/metabolismo
16.
AIDS Behav ; 23(Suppl 2): 120-128, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31161462

RESUMEN

To successfully link to care, persons living with HIV must negotiate a complex series of processes from HIV diagnosis through initial engagement with HIV care systems and providers. Despite the complexity involved, linkage to care is often oversimplified and portrayed as a single referral step. In this article, we offer a new conceptual framework for linkage to care, tailored to the current universal test and treat era that presents linkage to care as its own nuanced pathway within the larger HIV care cascade. Conceptualizing linkage to care in this way may help better identify and specify processes posing a barrier to linkage, and allow for the development of targeted implementation and behavioral science-based approaches to address them. Such approaches are likely to be most relevant to programmatic and clinical settings with limited resources and high HIV burden.


Asunto(s)
Antirretrovirales/uso terapéutico , Continuidad de la Atención al Paciente/estadística & datos numéricos , Atención a la Salud/organización & administración , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Aceptación de la Atención de Salud , Derivación y Consulta/estadística & datos numéricos , Continuidad de la Atención al Paciente/normas , Infecciones por VIH/prevención & control , Humanos , Ciencia de la Implementación , Tamizaje Masivo/métodos , Encuestas y Cuestionarios , Estados Unidos/epidemiología
17.
AIDS Behav ; 23(Suppl 2): 129, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31367968

RESUMEN

The article "Re-thinking Linkage to Care in the Era of Universal Test and Treat: Insights from Implementation and Behavioral Science for Achieving the Second 90", written by Michael E. Herce• Benjamin H. Chi • Rodrigo C. Liao • Christopher J. Hoffmann, was originally published electronically on the publisher's internet portal (currently SpringerLink) on 3rd June 2019 without open access.

18.
AIDS Behav ; 23(9): 2600-2609, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31367967

RESUMEN

Men diagnosed with HIV face gender-related barriers to initiating and adhering to antiretroviral therapy (ART). This qualitative study (73 in-depth interviews; 28 focus group discussions), conducted with men in three urban sites in Côte d'Ivoire in 2016, examined perceptions of ART, including benefits and challenges, to explore how ART mitigates HIV's threats to men's sexuality, economic success, family roles, social status, and health. Participants perceived that adhering to ART would reduce risk of transmitting HIV to others, minimize job loss and lost productivity, and help maintain men's roles as decision makers and providers. ART adherence was thought to help reduce the threat of HIV-related stigma, despite concerns about unintentional disclosure. While ART was perceived to improve health directly, it restricted men's schedules. Side effects were also a major challenge. Social and behavior change approaches building on these insights may improve male engagement across the HIV care continuum.


Asunto(s)
Terapia Antirretroviral Altamente Activa , Actitud Frente a la Salud/etnología , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/psicología , Cumplimiento de la Medicación , Hombres/psicología , Adulto , Côte d'Ivoire , Relaciones Familiares , Femenino , Grupos Focales , Identidad de Género , Infecciones por VIH/etnología , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Aceptación de la Atención de Salud/psicología , Investigación Cualitativa , Conducta Sexual , Estigma Social
19.
AIDS Care ; 31(4): 481-488, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30078352

RESUMEN

While interventions to improve HIV linkage and retention in care exist, none have demonstrated results sufficient to reach UNAIDS 90-90-90 goals. We explored values and costs of seeking clinical care through testing three strategies to improve linkage to care: Point of care CD4 testing alone (POC-CD4), POC-CD4 combined with transportation support and combined with care facilitation. We conducted in-depth interviews with participants and transcribed audio-recordings of care facilitation sessions. Participants described values and costs enhanced or addressed by the three interventions. Psychosocial support provided through the care facilitation intervention appeared salient. Participants named other values and costs of seeking care unrelated to the intervention, such as encouragement from healthcare workers and aversion to lifelong treatment. Combined with the quantitative results of this trial, these findings may point to why the care facilitation arm was successful but not the POC-CD4 only or transportation arms. It also provides guidance for future interventions.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Recuento de Linfocito CD4/economía , Infecciones por VIH/tratamiento farmacológico , Aceptación de la Atención de Salud/estadística & datos numéricos , Sistemas de Atención de Punto/economía , Pruebas en el Punto de Atención/economía , Adulto , Fármacos Anti-VIH/economía , Recuento de Linfocito CD4/métodos , Análisis Costo-Beneficio , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , Costos de la Atención en Salud , Accesibilidad a los Servicios de Salud/estadística & datos numéricos , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Pruebas en el Punto de Atención/estadística & datos numéricos , Sudáfrica
20.
Clin Infect Dis ; 66(6): 921-929, 2018 03 05.
Artículo en Inglés | MEDLINE | ID: mdl-29028970

RESUMEN

Background: Before the wide availability of antiretroviral therapy (ART), tuberculosis and human immunodeficiency virus (HIV) disease among pregnant women resulted in poor maternal and neonatal outcomes, including high rates of mother-to-child transmission of both HIV and tuberculosis. We aimed to describe the impact of tuberculosis among HIV-infected mothers on obstetric and infant outcomes in a population with access to ART. Methods: In this prospective cohort study, we followed up HIV-infected pregnant women with or without tuberculosis disease from January 2011 through January 2014 in Soweto, South Africa. Two controls were enrolled for each case patient, matched by enrollment time, maternal age, gestational age, and planned delivery clinic and followed up for 12 months after delivery. Results: We recruited 80 case patients and 155 controls, resulting in 224 live-born infants. Infants of mothers with HIV infection and tuberculosis disease had a higher risk of low birth weight (20.8% vs 10.7%; P = .04), prolonged hospitalization at birth (51% vs 16%; P < .001), infant death (68 vs 7 deaths per 1000 births; P < .001), and tuberculosis disease (12% vs 0%; P < .001) despite appropriate maternal therapy and infant tuberculosis preventive therapy. HIV transmission was higher among these infants (4.1% vs 1.3%; P = .20), though this difference was not statistically significant. Obstetric outcomes in coinfected women were also poorer with higher risks of maternal hospitalization (25% vs 11%; P = .005) and preeclampsia (5.5% vs 0.7%; P = .03). Conclusions: Tuberculosis in HIV coinfected pregnant women remains a significant threat to the health of both mothers and infants. Improving tuberculosis prevention and early diagnosis among pregnant women is critical.


Asunto(s)
Infecciones por VIH/complicaciones , Mortalidad Infantil , Transmisión Vertical de Enfermedad Infecciosa/estadística & datos numéricos , Tuberculosis/complicaciones , Adolescente , Adulto , Fármacos Anti-VIH/uso terapéutico , Antituberculosos/uso terapéutico , Femenino , Edad Gestacional , Infecciones por VIH/tratamiento farmacológico , VIH-1 , Hospitalización/estadística & datos numéricos , Humanos , Lactante , Recién Nacido de Bajo Peso , Recién Nacido , Madres , Preeclampsia , Embarazo , Complicaciones Infecciosas del Embarazo/microbiología , Complicaciones Infecciosas del Embarazo/virología , Estudios Prospectivos , Sudáfrica/epidemiología , Tuberculosis/tratamiento farmacológico , Adulto Joven , Zidovudina/uso terapéutico
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA