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  • 1
    In: Clinical Trials, SAGE Publications, Vol. 6, No. 4 ( 2009-08), p. 365-372
    Abstract: Background The importance of recruiting and retaining study participants from minority groups is well recognized; however, there are no established rules for recruitment as its success depends on the setting and population. Purpose To describe and analyze recruitment strategies, ethical considerations, and recruitment outcomes from a study to evaluate the efficacy the Human Papilloma Virus vaccine in young men who have sex with men (MSM). Methods The recruitment settings were university and community sites in the state of Morelos, Mexico. Eligibility requirement were men between 18 and 23 years old, who were free of anal-genital lesions as confirmed by clinical exploration, HIV negative, with no history of sexual relations with female partners and with fewer than five male lifetime sexual partners. Recruitment goals were 25 study participants in a four and a half month period. In addition to traditional recruitment strategies (flyers and media advertising, specific training of the recruitment team and adequate choice of recruitment sites)—engagement of local leaders in the MSM community formed a crucial part of the strategy. Special consideration was given to confidentiality and respect for study participants and a Bill of Participant Rights was developed as an explicit commitment to respect and acceptance. Results In total 723 MSM were initially contacted, 243 filled out the recruitment questionnaire, of which 151 met the criteria to be invited to the clinical examination. After clinical examination and interviews with the recruitment team, 131 fulfilled the inclusion criteria, of whom 73 were enrolled in the study — nearly triple the recruitment goal. Among the initial recruitment strategies (application of the screening questionnaire) attending meetings with MSM activist organizations was the most successful (326), followed by recruitment at bars and dance clubs (107). Limitations The recruitment strategies should be formally evaluated for their effectiveness to identify those which are most successful. In addition, future studies should consider the evaluation of study participants’ perceptions of the recruitment strategies. Conclusions Recruiting MSM in a developing country such as Mexico presented multiple challenges. We recommend that future studies actively engage the local MSM community and pay special attention to designing recruitment strategies that guarantee the confidentiality of and respect for participants.
    Type of Medium: Online Resource
    ISSN: 1740-7745 , 1740-7753
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2009
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  • 2
    In: Journal of Interpersonal Violence, SAGE Publications, Vol. 37, No. 1-2 ( 2022-01), p. 644-658
    Abstract: Abusive head trauma (AHT) is one of the most severe forms of child abuse due to its morbidity and mortality. However, AHT is still misdiagnosed in developing countries because of its nonspecific clinical picture and limited knowledge of it on the part of physicians. The aim of this study was to describe some characteristics of children with AHT, their families, and caregivers, as well as the clinical data that could serve as signs for its suspicion and the medical-legal resolution of the cases. Children suspect with AHT in emergency rooms in three Mexican hospitals were included after obtaining informed consent from the parents. All information was obtained from the parents by means of a questionnaire and from different clinical and radiological evaluations of the clinical records of the patients. 15 children, with a median age of 5 months and predominantly males (73.33%), were included in the study. 66% reported a history of irritability periods, and most of the patients (73.33%) had more than one habitual caregiver. The diagnosis of AHT was suspected in only 33.33% on admission in the Emergency Services. Acute symptomatology was present in 53.33%, while less severe symptoms were reported in the rest. Special attention should be paid on babies with history of irritable periods. When a child who is previously healthy and suddenly presents with a seizure or cardiorespiratory dysfunction or brought to the hospital dead, the diagnosis of AHT should be considered as a priority.
    Type of Medium: Online Resource
    ISSN: 0886-2605 , 1552-6518
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2028900-5
    SSG: 2
    SSG: 2,1
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  • 3
    In: Biomarkers in Cancer, SAGE Publications, Vol. 7 ( 2015-01), p. BIC.S29716-
    Abstract: Several studies have evaluated histologic features of nonneoplastic breast parenchyma in patients with BRCA1/2 mutations, but the results are conflicting. The limited data suggest a much higher prevalence of high-risk precursor lesions in BRCA carriers. Therefore, we designed this study to compare the clinicopathological characteristics of peritumoral benign breast tissue in patients with and without deleterious BRCA mutations. Methods Women with breast cancer (BC) who were referred for genetic counseling and underwent BRCA genetic testing in 2010 and 2011 were included in the study. Results Of the six benign histological features analyzed in this study, only stromal fibrosis grade 2/3 was found to be statistically different, with more BRCA noncarriers having stromal fibrosis grade 2/3 than BRCA1/2 carriers ( P = 0.04). Conclusion There is no significant association between mutation risk and the presence of benign histologic features of peritumoral breast parenchyma.
    Type of Medium: Online Resource
    ISSN: 1179-299X , 1179-299X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2015
    detail.hit.zdb_id: 2592049-2
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  • 4
    In: Tobacco Use Insights, SAGE Publications, Vol. 16 ( 2023-10), p. 1179173X2311523-
    Abstract: Almost 30% of Chilean women report cigarette smoking with important repercussions on their health. OBJECTIVE Design and test a mobile phone intervention for smoking cessation in young women. STUDY DESIGN A mobile application (app) was created using the best available evidence and consumer input. Its effectiveness was assessed through a randomized clinical trial. STUDY PARTICIPANTS Women 18 to 44 years old from middle-class neighborhoods in Santiago, Chile. Inclusion criteria were intention to quit cigarette smoking in the following month and having a smartphone cell phone. Women with positive screening for risky alcohol consumption were excluded. INTERVENTION App with content to support cigarette smoking cessation over 6 months. The control arm included an app that delivered general messages to promote permanence in the study. Telephone follow-up was performed at 6 weeks, and at 3 and 6 months after randomization. MAIN OUTCOME MEASURE No smoking in the past 7 days at 6 weeks from enrolment. Intention-to-treat analysis was carried out using SPSS 17.0 with a significance level set at .05. RESULTS 309 women entered the study. Mean number of cigarettes smoked in a day was 8.8. 58.6% of the participants (n = 181) completed the follow-up for the primary outcome. With intention-to-treat analysis, 9.7% of participants in the intervention group reported not having smoked any cigarettes in the last 7 days vs 3.2% in the control group (RR 2.98 CI 95% 1.11-8.0, P = .022). Additionally, 12.3% vs 1.9% of the participants in the intervention group and control group reported continuous abstinence at 6 weeks, respectively (RR 6.29 95% CI 1.9-20.8, P 〈 .001). Continuous abstinence was also significant at 6 months ( P-value of .036). CONCLUSIONS The “Appagalo” app is an effective tool to support smoking cessation in young women. It is a simple mHealth alternative for smoking cessation that can contribute to improving women's health in the Americas and worldwide.
    Type of Medium: Online Resource
    ISSN: 1179-173X , 1179-173X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2532401-9
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  • 5
    In: Therapeutic Advances in Gastrointestinal Endoscopy, SAGE Publications, Vol. 16 ( 2023-01)
    Abstract: Dysphagia is the most frequent symptom in patients diagnosed with esophageal cancer. Self-expanding metal stents (SEMS) are the current palliative treatment of choice for dysphagia in patients with non-curable esophageal cancer. This study aimed to evaluate the efficacy and adverse events (AEs) of different types of SEMS for palliation of dysphagia. Methods: We performed a retrospective cohort study of patients with advanced esophageal cancer and SEMS placement for dysphagia palliation in a tertiary care center. The primary outcome was the clinical success defined as an improvement in dysphagia (reduction of at least 2 points in the Mellow–Pinkas scoring system for dysphagia) after SEMS placement. Results: Between January 1999 and May 2020, 295 patients with esophageal cancer were identified. Among them, 75 had a SEMS placement for dysphagia palliation. The mean age of the patients was 61.3 years (standard deviation: 13.4), 69 patients (92%) were men, and the mean Mellow–Pinkas scoring for dysphagia pre- and post-SEMS placement were 3.1 and 1.4 (change from baseline −1.7), respectively. Technical success and clinical success were achieved in 98.6% and 58.9%, respectively. AEs were identified in 35/75 patients (46.7%), and SEMS migration was the most frequent AE in 22/75 patients (29.3%). There were no significant differences in improvement in dysphagia ( p = 0.054), weight changes ( p = 0.78), and AE ( p = 0.73) among fully covered SEMS (fc-SEMS) and partially covered SEMS (pc-SEMS). The median follow-up was 89 days (interquartile range: 29–221). Conclusion: SEMS placement was associated with a rapid improvement in dysphagia, high technical success, and a modest improvement in dysphagia with no major AE among fc-SEMS and pc-SEMS.
    Type of Medium: Online Resource
    ISSN: 2631-7745 , 2631-7745
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 3011635-1
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  • 6
    In: Cell Transplantation, SAGE Publications, Vol. 22, No. 5 ( 2013-05), p. 839-854
    Abstract: Multiple sclerosis (MS) is a severe debilitating disorder characterized by progressive demyelination and axonal damage of the central nervous system (CNS). Current therapies for MS inhibit the immune response and demonstrate reasonable benefits if applied during the early phase of relapsing–remitting MS (RRMS) while there are no treatments for patients that progress neither to the chronic phase nor for the primary progressive form of the disease. In this manuscript, we have studied the therapeutic efficacy of a cell and gene therapy strategy for the treatment of a mouse model of chronic MS [myelin oligodendrocyte glycoprotein (MOG)-induced experimental autoimmune encephalomyelitis (EAE)]. We used allogenic mesenchymal stem cells (MSCs) as a therapeutic tool and also as vehicle to deliver fully processed 3.3-kDa vasoactive intestinal peptide (VIP) to the peripheral immune organs and to the inflamed CNS. Intraperitoneal administrations of MSCs expressing VIP stopped progression and reduced symptoms when administered at peak of disease. The improvement in clinical score correlated with diminished peripheral T-cell responses against MOG as well as lower inflammation, lower demyelination, and higher neuronal integrity in the CNS. Interestingly, neither lentiviral vectors expressing VIP nor unmodified MSCs were therapeutic when administer at the peak of disease. The increased therapeutic effect of MSCs expressing VIP over unmodified MSCs requires the immunoregulatory and neuroprotective roles of both VIP and MSCs and the ability of the MSCs to migrate to peripheral lymph organs and the inflamed CNS.
    Type of Medium: Online Resource
    ISSN: 0963-6897 , 1555-3892
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2013
    detail.hit.zdb_id: 2020466-8
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  • 7
    In: Cell Transplantation, SAGE Publications, Vol. 30 ( 2021-01-01), p. 096368972110017-
    Abstract: A recent randomized, multicenter trial did not show benefit of a CXCR1/2 receptor inhibitor (Reparixin) when analysis included marginal islet mass ( 〉 3,000 IEQ/kg) for allotransplantation and when immunosuppression regimens were not standardized among participating centers. We present a post-hoc analysis of trial patients from our center at the University of Chicago who received an islet mass of over 5,000 IEQ/kg and a standardized immunosuppression regimen of anti-thymocyte globulin (ATG) for induction. Twelve islet allotransplantation (ITx) recipients were randomized (2:1) to receive Reparixin ( N = 8) or placebo ( N = 4) in accordance with the multicenter trial protocol. Pancreas and donor characteristics did not differ between Reparixin and placebo groups. Five (62.5%) patients who received Reparixin, compared to none in the placebo group, achieved insulin independence after only one islet infusion and remained insulin-free for over 2 years ( P = 0.08). Following the first ITx with ATG induction, distinct cytokine, chemokine, and miR-375 release profiles were observed for both the Reparixin and placebo groups. After excluding procedures with complications, islet engraftment on post-operative day 75 after a single transplant was higher in the Reparixin group ( n = 7) than in the placebo ( n = 3) group ( P = 0.03) when islet graft function was measured by the ratio of the area under the curve (AUC) for c-peptide to glucose in mixed meal tolerance test (MMTT). Additionally, the rate of engraftment was higher when determined via BETA-2 score instead of MMTT ( P = 0.01). Our analysis suggests that Reparixin may have improved outcomes compared to placebo when sufficient islet mass is transplanted and when standardized immunosuppression with ATG is used for induction. However, further studies are warranted. Investigation of Reparixin and other novel agents under more standardized and optimized conditions would help exclude confounding factors and allow for a more definitive evaluation of their role in improving outcomes in islet transplantation. Clinical trial reg. no. NCT01817959, clinicaltrials.gov
    Type of Medium: Online Resource
    ISSN: 0963-6897 , 1555-3892
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2021
    detail.hit.zdb_id: 2020466-8
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  • 8
    In: Journal of Investigative Medicine, SAGE Publications, Vol. 70, No. 4 ( 2022-04), p. 947-952
    Abstract: Colorectal cancer (CRC) is the third most common cancer and one of the main causes of death around the world. Multiple lines of evidence have suggested the role of the corticotropin-releasing hormone (CRH) family in CRC induction, including the low expression of corticotropin-releasing hormone receptor 2 ( CRHR2), which is an angiogenesis inhibitor and inflammatory modulator. Previous research suggests that CRHR2 expression in colonic intestinal cells can regulate migration, proliferation and apoptosis through the modulation of several pathways. The aim of this study was to analyze the association of the rs10250835, rs2267716 and rs2267717 variants of CRHR2 gene with CRC in the Mexican population in order to consider its predictive value in CRC. This cross-sectional study included a group of 187 unrelated patients with sporadic CRC and a control group of 191 healthy blood donors. DNA extraction from peripheral blood was carried out using the Miller method. Identification of the rs10250835 variant was performed using PCR-restriction fragment length polymorphism (RFLP) and the rs2267716 and rs2267717 variants using TaqMan allelic discrimination assay. The minor allele homozygous CC of the rs2267716 variant of CRHR2 showed significant difference between CRC and control group (p=0.025), as well as the GCA haplotype (p=0.007), corresponding to the rs10250835, rs2267716 and rs2267717 variants, respectively. Our results suggest that the rs2267716 variant and GCA haplotype of CRHR2 represent a risk factor for CRC development in Mexican patients.
    Type of Medium: Online Resource
    ISSN: 1081-5589 , 1708-8267
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
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