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BACKGROUND: Macrophages are involved in tissue homeostasis, angiogenesis and immunomodulation. Proangiogenic and anti-inflammatory macrophages (regulatory macrophages, Mreg) can be differentiated in-vitro from CD14+ monocytes by using a defined cell culture medium and a stimulus of IFNγ. AIM OF THE STUDY: To scrutinize the potential impact of temporal IFNγ exposure on macrophage differentiation as such exposure may lead to the emergence of a distinct and novel macrophage subtype. METHODS: Differentiation of human CD14+ monocytes to Mreg was performed using a GMP compliant protocol and administration of IFNγ on day 6. Monocytes from the same donor were in parallel differentiated to MregIFNγ0 using the identical protocol but with administration of IFNγ on day 0. Cell characterization was performed using brightfield microscopy, automated and metabolic cell analysis, transmission electron microscopy, flow cytometry, qPCR and secretome profiling. RESULTS: Mreg and MregIFNγ0 showed no differences in cell size and volume. However, phenotypically MregIFNγ0 exhibited fewer intracellular vesicles/vacuoles but larger pseudopodia-like extensions. MregIFNγ0 revealed reduced expression of IDO and PD-L1 (P < 0.01 for both). They were positive for CD80, CD14, CD16 and CD38 (P < 0.0001vs. Mreg for all), while the majority of MregIFNγ0 did not express CD206, CD56, and CD103 on their cell surface (P < 0.01 vs. Mreg for all). In terms of their secretomes, MregIFNγ0 differed significantly from Mreg. MregIFNγ0 media exhibited reduced levels of ENA-78, Osteopontin and Serpin E1, while the amounts of MIG (CXCL9) and IP10 were increased. CONCLUSION: Exposing CD14+ monocytes to an alternatively timed IFNγ stimulation results in a novel macrophage subtype which possess additional M1-like features (MregIFNγ0). MregIFNγ0 may therefore have the potential to serve as cellular therapeutics for clinical applications beyond those covered by M2-like Mreg, including immunomodulation and tumor treatment.
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Diferenciação Celular , Interferon gama , Macrófagos , Fenótipo , Humanos , Interferon gama/metabolismo , Interferon gama/farmacologia , Macrófagos/metabolismo , Macrófagos/efeitos dos fármacos , Diferenciação Celular/efeitos dos fármacos , Monócitos/metabolismo , Monócitos/efeitos dos fármacos , Fatores de Tempo , Receptores de Lipopolissacarídeos/metabolismoRESUMO
The MMI Symani® is a recently approved robotic microsurgical system for surgical procedures in adults. The system enables the surgeon to create microanastomoses. Clinical applications so far include lymphatic vessels surgery and the creation of special flap plastics. The use of the system in coronary arteries has not yet been assessed. The aim of this preclinical study was to evaluate the applicability of the Symani® surgical system in the creation of coronary anastomoses a cadaveric porcine model. A total of 12 anastomoses were performed by three senior cardiovascular surgeons on the left main coronary artery of three porcine hearts. Artificial bypasses (diameter 1 mm) were performed to the left main trunk. The anastomoses were performed with the Symani® surgical system. Evaluation included procedure times and anastomosis leakage. All anastomoses could be successfully performed. The procedure time decreased due to the learning curve between the first anastomosis 47:28 ± 5:30 min and the last anastomosis 22:37 ± 3:25 min. The final evaluation of the anastomoses showed excellent results with low leakage. The quality of the anastomosis also improved in relation to the increasing learning curve. The Symani® surgical system could be used to create coronary anastomoses in an acceptable time frame and without technical failures. Hence, the system appears feasible for conventional coronary surgery. Further studies in animal models are mandatory prior to clinical application.
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Procedimentos Cirúrgicos Robóticos , Cirurgiões , Adulto , Suínos , Humanos , Animais , Procedimentos Cirúrgicos Robóticos/métodos , Ponte de Artéria Coronária , Anastomose Cirúrgica , CadáverRESUMO
Macrophages belong to the innate immune system, and we have recently shown that in vitro differentiated human regulatory macrophages (Mreg) release large extracellular vesicles (L-EVMreg) with an average size of 7.5 µm which regulate wound healing and angiogenesis in vitro. The aim of this study was to investigate whether L-EVMreg also affect the CD3/CD28-mediated activation of T-cells. Mreg were differentiated using blood monocytes and L-EVMreg were isolated from culture supernatants by differential centrifugation. Activation of human T-cells was induced by CD3/CD28-coated beads in the absence or presence of Mreg or different concentrations of L-EVMreg. Inhibition of T-cell activation was quantified by flow cytometry and antibodies directed against the T-cell marker granzyme B. Phosphatidylserine (PS) exposure on the surface of Mreg and L-EVMreg was analyzed by fluorescence microscopy. Incubation of human lymphocytes with CD3/CD28 beads resulted in an increase of cell size, cell granularity, and number of granzyme B-positive cells (P < 0.05) which is indicative of T-cell activation. The presence of Mreg (0.5 × 106 Mreg/ml) led to a reduction of T-cell activation (number of granzyme B-positive cells; P < 0.001), and a similar but less pronounced effect was also observed when incubating activated T-cells with L-EVMreg (P < 0.05 for 3.2 × 106 L-EVMreg/ml). A differential analysis of the effects of Mreg and L-EVMreg on CD4+ and CD8+ T-cells showed an inhibition of CD4+ T-cells by Mreg (P < 0.01) and L-EVMreg (P < 0.05 for 1.6 × 106 L-EVMreg/ml; P < 0.01 for 3.2 × 106 L-EVMreg/ml). A moderate inhibition of CD8+ T-cells was observed by Mreg (P < 0.05) and by L-EVMreg (P < 0.01 for 1.6 × 106 L-EVMreg/ml and 3.2 × 106 L-EVMreg/ml). PS was restricted to confined regions of the Mreg surface, while L-EVMreg showed strong signals for PS in the exoplasmic leaflet. L-EVMreg attenuate CD3/CD28-mediated activation of CD4+ and CD8+ T-cells. L-EVMreg may have clinical relevance, particularly in the treatment of diseases associated with increased T-cell activity. KEY MESSAGES: Mreg release large extracellular vesicles (L-EVMreg) with an average size of 7.5 µm L-EVMreg exhibit phosphatidylserine positivity L-EVMreg suppress CD4+ and CD8+ T-cells L-EVMreg hold clinical potential in T-cell-related diseases.
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Antígenos CD28 , Linfócitos T CD8-Positivos , Humanos , Granzimas/farmacologia , Fosfatidilserinas/farmacologia , Macrófagos , Ativação Linfocitária , Linfócitos T CD4-PositivosRESUMO
Robot-assisted surgery has not yet been able to establish itself for vascular surgery. However, the preconditions for robot-assisted vascular interventions have changed fundamentally over the past years because of technological advances and extensive experience in other surgical disciplines. Hence, we describe a robot-assisted repair of an iliac artery aneurysm using a late-generation robotic platform. A 63-year-old male patient was diagnosed with an asymptomatic 30 mm aneurysm of the right common iliac artery. The operation was performed with the Da Vinci Xi system (Intuitive Surgical, Inc., Sunnyvale, CA, USA) using a direct transperitoneal approach to repair the aneurysm by interposition of a Dacron vascular prothesis. The total operating duration was 304 minutes without perioperative need for blood transfusion. The patient was discharged on the eighth postoperative day after an uneventful postoperative course. The case presented shows that robot-assisted surgery in the iliac axis can be performed safely with reasonable operating times.
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Aneurisma , Laparoscopia , Procedimentos Cirúrgicos Robóticos , Robótica , Masculino , Humanos , Pessoa de Meia-Idade , Artéria Ilíaca/cirurgia , Aneurisma/cirurgia , Procedimentos Cirúrgicos VascularesRESUMO
BACKGROUND: The best medical treatment (BMT) for most patients with early stage of peripheral arterial occlusive disease (PAOD) is often limited to gait training and pharmacological therapy besides endovascular surgery. The application of remote ischemic conditioning (RIC) has been described as a promising experimental strategy for the improvement of therapeutic outcome in cardiovascular disease but has not proven beneficial effects in clinical practice and treatment of PAOD yet. METHODS: Here we describe a prospective, randomized trial for the evaluation of possible effects of repeated application of RIC in patients with PAOD. This monocentric study will enrol 200 participants distributed to an intervention group receiving RIC + BMT and a control group only receiving BMT for four weeks. Patients are at least 18 years of age and have diagnosed PAOD Fontaine stage II b. Pain-free and total walking distance will be measured via treadmill test (primary endpoints). In addition, ankle-brachial index (ABI) and quality of life (QoL) will be assessed using the SF-36 and VascuQoL-6 questionnaire. Moreover, evaluation of markers for atherosclerosis, angiogenic profiling and mononuclear cell characterization will be performed using biochemical assays, proteome profiling arrays and flow cytometry (secondary endpoints). DISCUSSION: Our prospective, randomized monocentric trial is the first of its kind to analyse the effects of chronic and repetitive treatment with RIC in patients with PAOD and might provide important novel information on the molecular mechanisms associated with RIC in PAOD patients. TRIAL REGISTRATION: Prospectively registered in the German Clinical Trials Register (Deutsche Register Klinischer Studien) Registration number: DRKS00025735; Date of registration: 01.07.2021.
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Arteriopatias Oclusivas , Doença Arterial Periférica , Índice Tornozelo-Braço , Arteriopatias Oclusivas/diagnóstico , Arteriopatias Oclusivas/terapia , Terapia por Exercício , Humanos , Doença Arterial Periférica/complicações , Doença Arterial Periférica/diagnóstico , Doença Arterial Periférica/terapia , Estudos Prospectivos , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
In various disciplines, robotic-assisted surgery is a well-proven routine procedure, but have never been established in vascular surgery so far. This review summarizes the results to date of robotic-assisted abdominal aortic surgery (RAAS) in the treatment of aorto-iliac occlusive disease (AIOD) and abdominal aortic aneurysm (AAA). Web-based literature search of robotic-assisted surgical procedures on the abdominal aorta and iliac arteries between 1990 and 2020 including the Cochrane Library, OVID Medline, Embase, and PubMed medical databases. All studies conducting Robotic-assisted surgery were included in the quantitative analysis regarding operative and cross-clamping times, conversion rates, mortality and morbidity within the first 30 days, and in-hospital stay. Case reports and case studies (< 5 patients) were not included. Twenty-four studies were deemed thematically eligible for inclusion; after exclusion of duplicate publications, nine met the inclusion criteria for further analysis. A total of 850 patients who had either abdominal aortic aneurysm or aorto-iliac occlusive disease underwent RAAS. One study of abdominal aortic aneurysm, three of aorto-iliac occlusive disease, and five studies of both disease entities were analyzed quantitatively. For AAA, conversion rates ranged from 13.1 to 20% and perioperative mortality ranged from 0 to 1.6% with in-hospital stay of 7 days. For aorto-iliac occlusive disease, conversion rates ranged from 0 to 20%, and perioperative mortality ranged from 0 to 3.6% with in-hospital stay of 5-8 days. RAAS has been shown to be technically feasible with acceptable short-term outcomes and questionable benefits in terms of in-hospital stay and complication rates. RAAS is currently considered only an outsider procedure. Randomized-controlled trials are indispensable for regular use in vascular surgery as well as a clear approval situation for the vascular sector.
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Aneurisma da Aorta Abdominal , Arteriopatias Oclusivas , Laparoscopia , Procedimentos Cirúrgicos Robóticos , Humanos , Aneurisma da Aorta Abdominal/cirurgia , Procedimentos Cirúrgicos Robóticos/métodos , Aorta Abdominal/cirurgia , Arteriopatias Oclusivas/cirurgia , Laparoscopia/métodos , Resultado do TratamentoRESUMO
OBJECTIVE: To compare the percutaneous Rotarex and Angiojet thrombectomy devices with regard to effectiveness and in vitro safety. METHODS: The Rotarex and Angiojet devices were evaluated in an established in vitro pulsatile flow model with a human femoropopliteal vessel phantom. First pass recanalisation and thrombus weight were assessed after thrombectomy, as well as micro- and macro-emboli. Further, histological evaluation of the vascular phantom was performed to analyse vascular injuries. RESULTS: Thrombus weight did not differ significantly prior to the thrombectomy between the groups, but the Rotarex showed slight advantages in thrombus removal vs. the Angiojet regarding first pass recanalisation. Micro- and macro-emboli occurred in most of the endovascular manoeuvres performed; however, significantly more macro-emboli (2.37 ± 1.51 vs. 0.87 ± 0.83; p = .048) were observed using the Rotarex than the Angiojet. Macroscopic dissections were detected in the Rotarex group (n = 3) but not in the Angiojet group. Microscopic vascular injuries were detected significantly more often in the Rotarex group (Rotarex: 531.61 µm ± 102.81 µm; Angiojet: 705.42 µm ± 61.68 µm [p = .001]). CONCLUSION: Both devices showed a comparable performance, with a slight advantage for the Rotarex regarding first pass recanalisation. Significantly more thrombo-emboli, and vascular injuries were observed in the Rotarex group with the latter being obviously the more tissue preserving procedure but potentially with a lower rate of recanalisation. Based on the present results, clinical randomised trials, including long term follow up, are needed to optimise and improve the use of catheter based procedures, taking into account the thrombus entity, localisation, and clinical history.
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Embolia/etiologia , Procedimentos Endovasculares/instrumentação , Modelos Cardiovasculares , Trombectomia/instrumentação , Trombose/cirurgia , Procedimentos Endovasculares/efeitos adversos , Humanos , Trombectomia/efeitos adversosRESUMO
Aim of this study was to establish a simple and highly reproducible physiological circulation model to investigate endovascular device performance. The developed circulation model included a pneumatically driven pulsatile pump to generate a flow rate of 2.7 L/min at 70 beats per minute. Sections from the superficial femoral arteries were used in order to simulate device/tissue interaction and a filter was integrated to analyze periinterventional thromboembolism of white, red and mixed thrombi. The working fluid (3 L) was a crystalloid solution constantly tempered at 36.5 °C. To evaluate the model, aspiration thrombectomy, stent-implantation and thrombectomy with the Fogarty catheter were performed. Usability of the model was measured by the System Usability Scale (SUS) - Score. Histological specimens were prepared and analyzed postinterventional to quantify tissue/device interaction. Moreover, micro- and macroembolism were evaluated for each thrombus entity and each device. Results were tested for normality using the D'Agostino-Pearson test. Statistical comparisons of two groups were performed using the Student's t-test. All devices were able to remove the occlusions after a maximum of 2 attempts. First-pass-recanalization was not fully achieved for aspiration thrombectomy of mixed thrombi (90.6%), aspiration thrombectomy of red thrombi (84.4%) and stent-implantation in occlusions of red thrombi (92.2%). Most micro- and macroembolism were observed using the Fogarty catheter and after stent-implantation in occlusions of white thrombi. Histological examinations revealed a significant reduction of the vascular layers suggesting vascular damage after use of the Fogarty catheter (327.3 ± 3.5 µm vs. 440.6 ± 3.9 µm; p = 0.026). Analysis of SUS rendered a mean SUS-Score of 80.4 which corresponds to an excellent user acceptability of the model. In conclusion, we describe a stable, easy to handle and reproducible physiological circulation model for the simulation of endovascular thrombectomy including device performance and thromboembolism.
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Circulação Sanguínea/fisiologia , Cateterismo , Procedimentos Endovasculares , Modelos Cardiovasculares , Trombose/patologia , Trombose/cirurgia , Cateterismo/efeitos adversos , Cateterismo/instrumentação , Cateterismo/métodos , Procedimentos Endovasculares/efeitos adversos , Procedimentos Endovasculares/instrumentação , Procedimentos Endovasculares/métodos , Estudos de Viabilidade , Artéria Femoral , Humanos , Técnicas In Vitro , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/patologia , Stents , Trombectomia/efeitos adversos , Trombectomia/instrumentação , Trombectomia/métodos , Tromboembolia/etiologia , Tromboembolia/patologia , Tromboembolia/fisiopatologia , Tromboembolia/cirurgia , Trombose/etiologia , Trombose/fisiopatologiaRESUMO
INTRODUCTION: The current study aims to assess the prevalence, perpetrators, and consequences of cyber sexual harassment (CSH) among adolescent females. METHODS: Sexually active adolescent females (Nâ¯=â¯159) ages 15-19 were recruited from a health clinic in a low-income, urban area of southeast San Diego County, California to complete a tablet-administered survey that included items on sexual violence and harassment, including CSH. Using logistic regression models, we assessed CSH in relation to substance use, poor mental health outcomes and STI history. RESULTS: Participants were, on average, 17 years of age and half were currently in a relationship. The majority of girls (68%) reported at least one form of CSH, which included receiving unwanted sexual messages/photos (53%), receiving unwanted messages asking them to do something sexual (49%), being pressured to send sexual photos (36%), and having sexual photos shared without permission (6%). Perpetrators included known and unknown males; almost a third (27%) reported perpetration by a relationship partner. In logistic regression models adjusting for race, CSH was associated with: past 30-day alcohol use, drug use (ever), feeling depressed (past 30 days), and feeling anxious (past 30 days) (Odds Ratios ranged: 2.9-7.5). CSH was also associated with past-year suicidal thoughts and STI diagnosis (ever) (pâ¯<â¯0.05, ORs not presented due to small numbers). CONCLUSIONS: Our findings suggest that in some subgroups, CSH appears to be affecting the majority of girls, which is especially concerning given its association with multiple poor health outcomes.
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Cyberbullying , Assédio Sexual , Adolescente , Ansiedade/epidemiologia , California/epidemiologia , Estudos Transversais , Cyberbullying/psicologia , Cyberbullying/estatística & dados numéricos , Depressão/epidemiologia , Feminino , Humanos , Masculino , Prevalência , Assédio Sexual/psicologia , Assédio Sexual/estatística & dados numéricos , Infecções Sexualmente Transmissíveis/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Inquéritos e QuestionáriosRESUMO
PURPOSE: Among a sample of adolescent girls, we assessed: 1) prevalence of sexual harassment by type, place of occurrence, and perpetrators; 2) association with substance use and poor mental health outcomes; and 3) the proportion of girls experiencing sexual harassment in more than one place and relation to study outcomes. METHODS: We collected survey data from 159 sexually active girls (aged 15-19 years) recruited from an urban health clinic in Southern California. We used multivariable regression models to assess associations between sexual harassment in the past 6 months and the following outcomes: 1) substance use in past 30 days (alcohol use, binge drinking, and marijuana use, respectively); 2) other drug use ever; and 3) feelings of depression and anxiety, respectively, in past 30 days. RESULTS: Almost two-thirds of girls (65.4%) reported experiencing sexual harassment in the past 6 months. Among those reporting recent harassment (nâ¯=â¯104), the abuse most frequently occurred in public spaces (on public transport [50.5%], at school [42.7%], and in their neighborhoods [39.8%]) and most often in the form of sexual comments, jokes, or gestures (57.2%), although 12.6% were "touched, grabbed, or pinched in a sexual way." The vast majority (82.7%) did not know the perpetrators (82.7%). Experiences of sexual harassment in the past 6 months were significantly associated with alcohol use (odds ratio [OR], 4.5; 95% confidence interval [CI], 2.0-10.2), binge drinking (OR, 4.2; 95% CI, 1.8-9.8), and marijuana use (OR, 2.6; 95% CI, 1.2-5.7) in the past 30 days; other drug use ever (OR, 5.4; 95% CI, 1.8-16.4); and feelings of depression (OR: 2.7; 95%CI: 1.3-5.5) and anxiety (OR: 2.6; 95%CI: 1.2-5.5) in the past 30 days. Just over half (55.3%) reported sexual harassment in more than one place, which was also associated with poor substance use and mental health outcomes. CONCLUSIONS: Findings suggest that sexual harassment experiences are pervasive, occur in girls' immediate and everyday environments, and are associated with girls' substance use and adverse mental health outcomes.
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Sociodemographic correlates of engagement in human immunodeficiency virus (HIV) care are well studied, however the association with accessing drug resistance testing (DRT) and the development of drug resistance have not been characterized. Between 1996-2014, 11 801 HIV patients accessing therapy in British Columbia were observed longitudinally. A subset of 9456 patients had testable viral load; of these 8398 were linked to census data. Sociodemographic (census tract-level) and clinical (individual-level) correlates of DRT were assessed using multivariable General Estimating Equation logistic regression adjusted odds ratios (aOR). The mean number of tests per patient was 2.1 (Q1-Q3; 0-3). Separately, any drug resistance was determined using IAS-USA (2013) list for 5703 initially treatment naïve patients without baseline resistance; 5175 were census-linked (mean of 1.5 protease-reverse transcriptase sequences/patient, Q1-Q3; 0-2). Correlates of detecting drug resistance in this subset were analyzed using Cox PH regression adjusted hazard ratios (aHR). Our results indicate baseline CD4 <200 cells/µL (aOR: 1.5, 1.3-1.6), nRTI-only baseline regimens (aOR: 1.4, 1.3-1.6), and unknown (therapy initiation before routine pVL in BC) baseline pVL (aOR: 1.8, 1.5-2.1) were among individual-level clinical covariates strongly associated with having accessed DRT; while imperfect adherence (aHR: 2.2, 1.9-2.5), low baseline CD4 count (aHR: 1.9, 1.6-2.3), and high baseline pVL (aHR: 2.0, 1.6-2.6) were associated with a higher likelihood of developing drug resistance. A higher median income (aOR: 0.83, 0.77-0.89) and higher percentage of those with aboriginal ancestry (aOR: 0.85, 0.76-0.95) were census tract-level sociodemographic covariates associated with decreased access to DRT. Similarly, aboriginal ancestry (aHR: 1.2, 1.1-1.5) was associated with development of drug resistance. In conclusion, clinical covariates continue to be the strongest correlates of development of drug resistance and access to DRT for individuals. Regions of high median income and high aboriginal ancestry were weak census-level sociodemographic indicators of reduced DRT uptake, however high aboriginal ancestry was the only sociodemographic indicator for development of drug resistance.
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Fármacos Anti-HIV/uso terapêutico , Farmacorresistência Viral , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Disparidades em Assistência à Saúde , Adulto , Colúmbia Britânica/epidemiologia , Feminino , Seguimentos , Infecções por HIV/sangue , Acessibilidade aos Serviços de Saúde , Humanos , Modelos Logísticos , Estudos Longitudinais , Masculino , Adesão à Medicação , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Modelos de Riscos Proporcionais , Fatores Socioeconômicos , Carga ViralRESUMO
The continuum of care (CoC) is a fundamental approach to reproductive, maternal, newborn, and child health policy and programs, but linkages along the CoC are inadequately understood. This article assesses linkages in reproductive and maternal health (RMH) services in Bangladesh using the 2011 Bangladesh Demographic and Health Survey (n = 7170). Antenatal care (ANC) was positively associated with skilled birth attendance (SBA) among both pre-pregnancy contraceptive users and nonusers. Among women who used pre-pregnancy contraceptives but did not receive skilled ANC, there was a 26% decreased odds of SBA. Pre-pregnancy contraceptive use increased the odds of postpartum contraceptive use, but neither ANC nor SBA was associated with postpartum contraceptive use. There are clear linkages within maternal health services and within reproductive health services, but linkages across life stages were variable. Removing barriers to accessing health services early and addressing barriers in the transitions within RMH care will facilitate sustained engagement along the CoC.
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Continuidade da Assistência ao Paciente/organização & administração , Serviços de Saúde Materna/organização & administração , Serviços de Saúde Reprodutiva/organização & administração , Adolescente , Adulto , Bangladesh , Comportamento Contraceptivo/estatística & dados numéricos , Feminino , Pesquisas sobre Atenção à Saúde , Acessibilidade aos Serviços de Saúde , Humanos , Recém-Nascido , Pessoa de Meia-Idade , Tocologia/estatística & dados numéricos , Gravidez , Cuidado Pré-Natal/estatística & dados numéricos , Adulto JovemRESUMO
OBJECTIVE: To describe intravaginal practices (IVPs) among female sex workers (FSWs) who inject drugs in two cities-Tijuana and Ciudad Juarez-on the border between the USA and Mexico. METHODS: Data for a secondary analysis were obtained from interviews conducted as part of a randomized controlled trial in FSWs who injected drugs between October 28, 2008, and May 31, 2010. Eligible individuals were aged at least 18years and reported sharing injection equipment and having unprotected sex with clients in the previous month. Descriptive statistics were used to assess frequency and type of IVPs. Logistic regression was used to assess correlates of IVPs. RESULTS: Among 529 FSWs who completed both surveys, 229 (43.3%) had performed IVPs in the previous 6months. Factors independently associated with IVPs were reporting any sexually transmitted infection in the previous 6months (adjusted odds ratio [aOR] 1.8, 95% confidence interval [CI] 1.1-3.1; P=0.03), three or more pregnancies (aOR 1.9, 95% CI 1.1-3.2; P=0.02), and having clients who became violent when proposing condom use (aOR 5.8, 95% CI 1.0-34.3; P=0.05), which are all factors related to inconsistent condom use. CONCLUSION: Screening for IVPs could help to identify FSW at increased risk of HIV, and facilitate conversations about specific risk-reduction methods.
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Usuários de Drogas/estatística & dados numéricos , Infecções por HIV/prevenção & controle , Profissionais do Sexo/estatística & dados numéricos , Infecções Sexualmente Transmissíveis/prevenção & controle , Sexo sem Proteção/estatística & dados numéricos , Ducha Vaginal/estatística & dados numéricos , Adulto , Estudos Transversais , Feminino , Humanos , Modelos Logísticos , México , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Fatores de Risco , Assunção de Riscos , Inquéritos e QuestionáriosRESUMO
BACKGROUND: Although most people who inject drugs (PWID) in Tijuana, Mexico, primarily inject heroin, injection and non-injection use of methamphetamine and cocaine is common. We examined patterns of polydrug use among heroin injectors to inform prevention and treatment of drug use and its health and social consequences. METHODS: Participants were PWID residing in Tijuana, aged ≥18 years who reported heroin injection in the past six months and were recruited through respondent-driven sampling (n = 1,025). Latent class analysis was conducted to assign individuals to classes on a probabilistic basis, using four indicators of past six-month polydrug and polyroute use: cocaine injecting, cocaine smoking or snorting, methamphetamine injecting, and methamphetamine smoking or snorting. Latent class membership was regressed onto covariates in a multinomial logistic regression. RESULTS: Latent class analyses testing 1, 2, 3, and 4 classes were fit, with the 3-class solution fitting best. Class 1 was defined by predominantly heroin use (50.2%, n = 515); class 2 by methamphetamine and heroin use (43.7%, n = 448), and class 3 by methamphetamine, cocaine, and heroin use (6.0%, n = 62). Bivariate and multivariate analyses indicated a group of methamphetamine and cocaine users that exhibited higher-risk sexual practices and lower heroin injecting frequency, and a group of methamphetamine users who were younger and more likely to be female. CONCLUSIONS: Discrete subtypes of heroin PWID were identified based on methamphetamine and cocaine use patterns. These findings have identified subtypes of heroin injectors who require more tailored interventions to reduce the health and social harms of injecting drug use.
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Usuários de Drogas/estatística & dados numéricos , Dependência de Heroína/epidemiologia , Abuso de Substâncias por Via Intravenosa/epidemiologia , Adulto , Cocaína/administração & dosagem , Feminino , Infecções por HIV/epidemiologia , Dependência de Heroína/classificação , Humanos , Modelos Logísticos , Masculino , Metanfetamina/administração & dosagem , México , Fatores de Risco , Assunção de Riscos , Distribuição por Sexo , Abuso de Substâncias por Via Intravenosa/classificação , Sexo sem Proteção/estatística & dados numéricos , Adulto JovemRESUMO
Injection drug-using men from the US and Mexico who purchase sex in Tijuana, Mexico are at risk for transmitting HIV to their contacts in both countries via syringe sharing. We used social network methods to understand whether place of residence (US vs. Mexico) moderated the effect of emotional closeness on syringe sharing. We interviewed 199 drug-using men who reported paying/trading for sex in Tijuana, Mexico using an epidemiological and social network survey and collected samples for HIV/STI testing. Seventy-two men reported using injection drugs with 272 network contacts. Emotional closeness was strongly associated with syringe sharing in relationship where the partner lives in the US, while the relationship between emotional closeness and syringe sharing was considerably less strong in dyads where the partner lives in Mexico. Efforts to reduce HIV risk behaviors in emotionally close relationships are needed, and could benefit from tailoring to the environmental context of the relationship.
Assuntos
Usuários de Drogas/psicologia , Infecções por HIV/transmissão , Uso Comum de Agulhas e Seringas/psicologia , Características de Residência , Profissionais do Sexo , Parceiros Sexuais , Abuso de Substâncias por Via Intravenosa/psicologia , Seringas , Adulto , Infecções por HIV/epidemiologia , Humanos , Relações Interpessoais , Entrevistas como Assunto , Masculino , México/epidemiologia , Pessoa de Meia-Idade , Uso Comum de Agulhas e Seringas/estatística & dados numéricos , Rede Social , Abuso de Substâncias por Via Intravenosa/complicações , Abuso de Substâncias por Via Intravenosa/epidemiologia , Inquéritos e Questionários , Estados Unidos/epidemiologiaRESUMO
Given that syphilis is associated with HIV infection among people who inject drugs (PWID), we examined syphilis incidence among PWID in Tijuana, Mexico. From 2006 to 2007, 940 PWID (142 women and 798 men) were recruited via respondent-driven sampling and followed for 18 months. At semi-annual visits, participants were tested for syphilis and completed surveys, which collected information on socio-demographics, sexual behaviours, substance use and injection behaviours. Poisson regression was used to estimate syphilis incidence rates (IRs), incidence rate ratios (IRRs) and 95% confidence intervals (CIs). Twenty-one participants acquired syphilis during follow-up (IR = 1.57 per 100 person-years, 95% CI: 1.02-2.41). In a multivariate analysis, syphilis incidence was higher among women (IRR = 3.90, 95% CI: 1.37-11.09), HIV-positive participants (IRR = 4.60, 95% CI: 1.58-13.39) and those who reported ever exchanging sex for drugs, money, or other goods (IRR = 2.74, 95% CI: 0.97-7.76), while syphilis incidence was lower among those living in Tijuana for a longer duration (IRR = 0.95 per year, 95% CI: 0.91-1.00) and those reporting at least daily injection drug use (past 6 months) (IRR = 0.22, 95% CI: 0.09-0.54). Our findings suggest interventions that address the destabilising conditions associated with migration and integrate sexual and drug-related risk reduction strategies may help reduce syphilis incidence among PWID along the Mexico-US border.
Assuntos
Usuários de Drogas/estatística & dados numéricos , Comportamento Sexual/estatística & dados numéricos , Abuso de Substâncias por Via Intravenosa/epidemiologia , Sífilis/epidemiologia , Feminino , Seguimentos , Infecções por HIV/epidemiologia , Infecções por HIV/transmissão , Humanos , Incidência , Modelos Logísticos , Masculino , México/epidemiologia , Análise Multivariada , Uso Comum de Agulhas e Seringas/estatística & dados numéricos , Fatores de Risco , Comportamento de Redução do Risco , Assunção de Riscos , Comportamento Sexual/psicologia , Abuso de Substâncias por Via Intravenosa/complicações , Inquéritos e Questionários , Sífilis/diagnóstico , Sífilis/transmissão , Sexo sem Proteção/estatística & dados numéricos , Adulto JovemRESUMO
AIMS: Risk environment factors may influence unprotected sex between female sex workers who are also injection drug users (FSW-IDUs) and their regular and non-regular clients differently. Our objective is to identify correlates of unprotected vaginal sex in the context of client type. METHODS: A cross-sectional survey of 583 FSW-IDUs in Tijuana and Ciudad Juarez, Mexico, was analyzed using negative binomial regression to determine physical, social, economic, and policy risk-environment factors that affect the frequency of unprotected sex with regular and non-regular clients. RESULTS: Median number of unprotected vaginal sex acts in the past month among FSW-IDUs and their regular and non-regular clients was 11 (IQR 3-30) and 13 (IQR 5-30), respectively. Correlates differed by site and client type and were most closely associated with the risk environment. In Tijuana, social factors (e.g., injecting drugs with clients) were independently associated with more unprotected sex. Factors independently associated with less unprotected sex across client type and site included social and economic risk environment factors (e.g., receiving more money for unprotected sex). In the policy risk environment, always having free access to condoms was independently associated with less unprotected sex among non-regular clients in Tijuana (Risk rate ratio = 0.64; 95% confidence interval 0.43-0.97). CONCLUSIONS: Primarily physical, social, and economic risk-environment factors were associated with unprotected vaginal sex between FSW-IDUs and both client types, suggesting potential avenues for intervention.
RESUMO
BACKGROUND: Girl education is believed to be the best means of reducing girl child marriage (marriage <18 years) globally. However, in South Asia, where the majority of girl child marriages occur, substantial improvements in girl education have not corresponded to equivalent reductions in child marriage. This study examines the levels of education associated with female age at marriage over the previous 20 years across four South Asian nations with high rates (>20%) of girl child marriage- Bangladesh, India, Nepal and Pakistan. METHODS: Cross-sectional time series analyses were conducted on Demographic and Health Surveys (DHS) from 1991 to 2011 in the four focal nations. Analyses were restricted to ever-married women aged 20-24 years. Multinomial logistic regression models were used to assess the effect of highest level of education received (none, primary, secondary or higher) on age at marriage (<14, 14-15, 16-17, 18 and older). RESULTS: In Bangladesh and Pakistan, primary education was not protective against girl child marriage; in Nepal, it was protective against marriage at <14 years (AOR = 0.42) but not for older adolescents. Secondary education was protective across minor age at marriage categories in Bangladesh (<14 years AOR = 0.10; 14-15 years AORâ=â.25; 16-17 years AOR = 0.64) and Nepal (<14 years AOR = 0.21; 14-15 years AOR = 0.25; 16-17 years AOR = 0.57), but protective against marriage of only younger adolescents in Pakistan (<14 years AOR = 0.19; 14-15 years AOR = 0.23). In India, primary and secondary education were respectively protective across all age at marriage categories (<14 years AOR = 0.34, AOR = 0.05; 14-15 years AOR = 0.52, AOR = 0.20; 16-17 years AOR = 0.71, AOR = 0.48). CONCLUSION: Primary education is likely insufficient to reduce girl child marriage in South Asia, outside of India. Secondary education may be a better protective strategy against this practice for the region, but may be less effective for prevention of marriage among older relative to younger adolescents.
Assuntos
Educação/estatística & dados numéricos , Casamento/estatística & dados numéricos , Adolescente , Bangladesh , Estudos Transversais , Feminino , Humanos , Índia , Nepal , Paquistão , Risco , Fatores de Tempo , Adulto JovemRESUMO
BACKGROUND: In light of accumulated scientific evidence of the secondary preventive benefits of antiretroviral therapy, a growing number of jurisdictions worldwide have formally started to implement HIV Treatment as Prevention (TasP) programs. To date, no gold standard for TasP program monitoring has been described. Here, we describe the design and methods applied to TasP program process monitoring in British Columbia (BC), Canada. METHODS: Monitoring indicators were selected through a collaborative and iterative process by an interdisciplinary team including representatives from all 5 regional health authorities, the BC Centre for Disease Control (BCCDC), and the BC Centre for Excellence in HIV/AIDS (BC-CfE). An initial set of 36 proposed indicators were considered for inclusion. These were ranked on the basis of 8 criteria: data quality, validity, scientific evidence, informative power of the indicator, feasibility, confidentiality, accuracy, and administrative requirement. The consolidated list of indicators was included in the final monitoring report, which was executed using linked population-level data. RESULTS: A total of 13 monitoring indicators were included in the BC TasP Monitoring Report. Where appropriate, indicators were stratified by subgroups of interest, including HIV risk group and demographic characteristics. Six Monitoring Reports are generated quarterly: 1 for each of the regional health authorities and a consolidated provincial report. CONCLUSIONS: We have developed a comprehensive TasP process monitoring strategy using evidence-based HIV indicators derived from linked population-level data. Standardized longitudinal monitoring of TasP program initiatives is essential to optimize individual and public health outcomes and to enhance program efficiencies.
Assuntos
Terapia Antirretroviral de Alta Atividade , Infecções por HIV/prevenção & controle , Indicadores de Qualidade em Assistência à Saúde/normas , Colúmbia Britânica , Contagem de Linfócito CD4 , Medicina Baseada em Evidências , Infecções por HIV/tratamento farmacológico , Infecções por HIV/imunologia , Infecções por HIV/virologia , Humanos , Avaliação de Programas e Projetos de Saúde , Carga ViralRESUMO
BACKGROUND: Few studies assessing the relationship between active and passive smoking and tuberculosis have used biomarkers to measure smoke exposure. We sought to determine the association between active and passive smoking and LTBI in a representative sample of US adults and children. METHODS: We used the 1999-2000 US National Health and Nutrition Examination Survey (NHANES) dataset with tuberculin skin test (TST) data to assess the association between cotinine-confirmed smoke exposure and latent tuberculosis infection (LTBI) among adults ages ≥20 years (nâ=â3598) and children 3-19 years (nâ=â2943) and estimate the prevalence of smoke exposure among those with LTBI. Weighted multivariate logistic regression was used to measure the associations between active and passive smoking and LTBI. RESULTS: LTBI prevalence in 1999-2000 among cotinine-confirmed active, passive, and non-smoking adults and children was 6.0%, 5.2%, 3.3% and 0.3%, 1.0%, 1.5%, respectively. This corresponds to approximately 3,556,000 active and 3,379,000 passive smoking adults with LTBI in the US civilian non-institutionalized population in 1999-2000. Controlling for age, gender, socioeconomic status, race, birthplace (US vs. foreign-born), household size, and having ever lived with someone with TB, adult active smokers were significantly more likely to have LTBI than non-smoking adults (AORâ=â2.31 95% CI 1.17-4.55). Adult passive smokers also had a greater odds of LTBI compared with non-smokers, but this association did not achieve statistical significance (AORâ=â2.00 95% CI 0.87-4.60). Neither active or passive smoking was associated with LTBI among children. Among only the foreign-born adults, both active (AORâ=â2.56 (95% CI 1.20-5.45) and passive smoking (AORâ=â2.27 95% CI 1.09-4.72) were significantly associated with LTBI. CONCLUSIONS: Active adult smokers and both foreign-born active and passive smokers in the United States are at elevated risk for LTBI. Targeted smoking prevention and cessation programs should be included in comprehensive national and international TB control efforts.