25 research outputs found

    Impact of COVID-19 on cardiovascular testing in the United States versus the rest of the world

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    Objectives: This study sought to quantify and compare the decline in volumes of cardiovascular procedures between the United States and non-US institutions during the early phase of the coronavirus disease-2019 (COVID-19) pandemic. Background: The COVID-19 pandemic has disrupted the care of many non-COVID-19 illnesses. Reductions in diagnostic cardiovascular testing around the world have led to concerns over the implications of reduced testing for cardiovascular disease (CVD) morbidity and mortality. Methods: Data were submitted to the INCAPS-COVID (International Atomic Energy Agency Non-Invasive Cardiology Protocols Study of COVID-19), a multinational registry comprising 909 institutions in 108 countries (including 155 facilities in 40 U.S. states), assessing the impact of the COVID-19 pandemic on volumes of diagnostic cardiovascular procedures. Data were obtained for April 2020 and compared with volumes of baseline procedures from March 2019. We compared laboratory characteristics, practices, and procedure volumes between U.S. and non-U.S. facilities and between U.S. geographic regions and identified factors associated with volume reduction in the United States. Results: Reductions in the volumes of procedures in the United States were similar to those in non-U.S. facilities (68% vs. 63%, respectively; p = 0.237), although U.S. facilities reported greater reductions in invasive coronary angiography (69% vs. 53%, respectively; p < 0.001). Significantly more U.S. facilities reported increased use of telehealth and patient screening measures than non-U.S. facilities, such as temperature checks, symptom screenings, and COVID-19 testing. Reductions in volumes of procedures differed between U.S. regions, with larger declines observed in the Northeast (76%) and Midwest (74%) than in the South (62%) and West (44%). Prevalence of COVID-19, staff redeployments, outpatient centers, and urban centers were associated with greater reductions in volume in U.S. facilities in a multivariable analysis. Conclusions: We observed marked reductions in U.S. cardiovascular testing in the early phase of the pandemic and significant variability between U.S. regions. The association between reductions of volumes and COVID-19 prevalence in the United States highlighted the need for proactive efforts to maintain access to cardiovascular testing in areas most affected by outbreaks of COVID-19 infection

    Adenoviral gene therapy in hepatocellular carcinoma: A review

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    Background: Hepatocellular carcinoma is the third leading cause of cancer death. Single or multiple mutations in genes related to growth control, apoptosis, invasion and metastasis have been determined; so a better understanding of the molecular genetic basis of malignant transformation, tumor progression and host interaction has led to significant progress in the development of new therapeutic agents. The ability of adenovirus vectors to deliver and express genes at high yields in HCC treatment has been demonstrated and well documented over the last few years. Objective: To overview and provide an update of what has been accomplished in the field of adenoviral gene therapy and its application in hepatocellular carcinoma treatment. Methods : Original articles were searched using Pubmed and other medical databases to get the most representative and actual information to establish the current state of the investigation of Ad vectors in HCC. Results : Good results have been accomplished in preclinical models using new Ad vectors and especially AAV vectors, it is important to motivate further clinical trials to corroborate all the experience obtained. Conclusions : Ad and AAV must be considered as an opportunity to improve the quality of life and survival of HCC patients. Zapotitlán 2012 Asian Pacific Association for the Study of the Liver

    Face transplant: Is it feasible in developing countries?

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    This article is based on the case of a 28-year-old woman who was involved in a car accident, with diagnosis of polytrauma, loss of left eye, and second- and third-degree burns over the left midface, rendering an exposed area of 8 cm wide and 19 cm length, ranging from glabella to mandible, with skull exposure and loss of left eye.A latissimus dorsi musculocutaneous free flap was transferred into the defect; left eye and nose prosthetics were necessary to restore normal appearance. Excellent results were obtained; reinsertion to patient's normal life and reinstatement of facial appearance were achieved with minimal costs and no postsurgical complications.Analysis of the current situation in developing countries demonstrates that technique and infrastructure do not represent a real challenge to carry on face transplants. However, socioeconomic reality in these societies makes it difficult to establish face transplant as a feasible therapeutic opportunity for the overwhelming majority of patients who are victims of severe facial damage.Therefore, strategies such as latissimus dorsi free flap remains as an excellent therapy to face off our complex facial reconstructive challenges in developing countries such as Mexico. Copyright � 2013 by Mutaz B. Habal, MD

    Combinatorial gene therapy induces regression of hepatic encephalopathy

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    Capillarization of the sinusoid impedes the clearance of neurotoxic substances in liver fibrosis. These events may result in hepatic encephalopathy. Neurological and hepatic features of rats after bile duct ligation (BDL) supplemented with Manganese (BDLMn 2+) were examined. The 4-week-old BDL rats had elevated levels of ammonia and were concomitantly fed with 1 mg ml -1 of MnCl -2 in drinking water (BDL/Mn 2+). Five out of fifteen rats were killed and the serum, liver and brain tissue (striatum and substantia nigra) were recovered. Of the remaining BDL/Mn 2+-cirrhotic animals (n10), five were injected with a combination of Adenovirus-human plasminogen activator (Ad-huPA) and Adenovirus-matrix metalloproteinase-8 (Ad-MMP-8) (3 × 10 11+1.5 × 10 11 vector particles per kg), and five with 4.5 × 10 11 vector particles per kg of Adenovirus-?-galactosidase (Ad-?-Gal). This treatment was carried on for 10 days. The BDL/Mn 2+ rats displayed tremor, rigidity and gait abnormalities, which improved notably with combinatorial gene therapy, as well as motor coordination. Liver fibrosis was evidently less after treatment with Ad-huPAAd-MMP-8 (25%). In the brain (striatum), Ad-huPAAd-MMP-8 treatment rendered higher concentrations of dopamine compared with Ad-?-Gal-treated encephalopathic rats (210 and 162 ng g -1 of tissue, respectively). The BDL/Mn 2+ animals and controls treated with Ad-?-Gal showed abnormal morphology in astrocytes (gliosis) in striatum and substantia nigra, in which expressions of green fibrillar acidic protein and tyrosine hydroxylase were altered. These abnormalities decreased with Ad-huPAAd-MMP-8 treatment. Importantly, the latter animals showed an increment in sprouting of nervous fibers in substantia nigra. Combinatorial gene therapy improves neuroanatomical and neurochemical characteristics similar to human hepatic encephalopathy. © 2011 Macmillan Publishers Limited All rights reserved

    Informe - El Empreendimento en La Eurorregión EUROACE 2014

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    El perfil del empreendedor de la Euroace es el de un hombre, de unos 38 años, con estudios secundarios, con un nivel de renta bajo (<20000 €) y que vive en un hogar de 3 persona

    Nuclear genome size and cytotype analysis in Agave cupreata Trel. & Berger (Agavaceae)

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    Background/Aim: The aim of this work was to establish a potential correlation between specific polymorphisms and presence of hepatic fibrosis in Mexican patients with established liver fibrosis (ELF). Second, necroinflammatory index improvement was correlated with Pirfenidone (PFD) treatment response and the same polymorphisms. Methods: We analyzed TGF-? polymorphisms in codon 25, a single basepair guanine insertion-deletion polymorphism (4G/5G) for PAI-1 and angiotensin AT-6 single nucleotide polymorphism located in -6 promoter region. Twenty patients infected with either hepatitis C virus (HCV) (n = 13) or affected by alcohol consumption (n = 7) were included. Thirty subjects with no hepatic damage were included in control group. Blood samples for genomic DNA were obtained and plasminogen activator inhibitor-1 polymorphisms were done by polymerase chain reaction-artificial introduction of a restriction site, TGF-? by polymerase chain reaction-amplification refractory mutation system and AT by polymerase chain reaction-restriction fragment length polymorphisms. Liver biopsies were obtained at baseline and after 12 months of PFD treatment. Results: Established liver fibrosis patients had the homo-zygote G/G TGF-? genotype, which has been associated with increased development of fibrosis. None of our patients had the G/C genotype. All pure HCV and pure alcohol abuse subjects carried G/G TGF-? genotype (100% vs 37% control) (P = 0.0006). The odds of having ? G/G genotype was 19.5 for HCV patients and 10.83 for alcohol consumption patients as compared with healthy subjects (P < 0.001). Established liver fibrosis patients had an improvement in necroinflammatory index after PFD treatment when correlated with plasminogen activator inhibitor-1 and angiotensinogen-6 genotypes. Conclusion: Our data suggested that a combination of inherited polymorphisms increased the risk of advanced fibrosis in ELF patients. Pure HCV and pure alcohol consumption patients which were homozygous G/G carriers had 19.5- and 10.8-fold higher risk to develop advanced fibrosis respectively. " 2008 by The American Federation for Medical Research.",,,,,,,,,"http://hdl.handle.net/20.500.12104/41497","http://www.scopus.com/inward/record.url?eid=2-s2.0-58149171859&partnerID=40&md5=2d9bdf46f3633f1bdbec471aff3ce07

    Fibrogenic polymorphisms (TGF-β, PAI-1, AT) in Mexican patients with established liver fibrosis. Potential correlation with pirfenidone treatment

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    Background/Aim: The aim of this work was to establish a potential correlation between specific polymorphisms and presence of hepatic fibrosis in Mexican patients with established liver fibrosis (ELF). Second, necroinflammatory index improvement was correlated with Pirfenidone (PFD) treatment response and the same polymorphisms. Methods: We analyzed TGF-β polymorphisms in codon 25, a single basepair guanine insertion-deletion polymorphism (4G/5G) for PAI-1 and angiotensin AT-6 single nucleotide polymorphism located in -6 promoter region. Twenty patients infected with either hepatitis C virus (HCV) (n = 13) or affected by alcohol consumption (n = 7) were included. Thirty subjects with no hepatic damage were included in control group. Blood samples for genomic DNA were obtained and plasminogen activator inhibitor-1 polymorphisms were done by polymerase chain reaction-artificial introduction of a restriction site, TGF-β by polymerase chain reaction-amplification refractory mutation system and AT by polymerase chain reaction-restriction fragment length polymorphisms. Liver biopsies were obtained at baseline and after 12 months of PFD treatment. Results: Established liver fibrosis patients had the homo-zygote G/G TGF-β genotype, which has been associated with increased development of fibrosis. None of our patients had the G/C genotype. All pure HCV and pure alcohol abuse subjects carried G/G TGF-β genotype (100% vs 37% control) (P = 0.0006). The odds of having β G/G genotype was 19.5 for HCV patients and 10.83 for alcohol consumption patients as compared with healthy subjects (P < 0.001). Established liver fibrosis patients had an improvement in necroinflammatory index after PFD treatment when correlated with plasminogen activator inhibitor-1 and angiotensinogen-6 genotypes. Conclusion: Our data suggested that a combination of inherited polymorphisms increased the risk of advanced fibrosis in ELF patients. Pure HCV and pure alcohol consumption patients which were homozygous G/G carriers had 19.5- and 10.8-fold higher risk to develop advanced fibrosis respectively. © 2008 by The American Federation for Medical Research

    A controlled clinical trial with pirfenidone in the treatment of pathological skin scarring caused by burns in pediatric patients

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    Background: Pathologic skin scarring reversion remains a big challenge for surgeons, as disfiguring scars have a dramatic influence on patient's quality of life. Methods: A controlled clinical trial was conducted to evaluate 8% pirfenidone (PFD) gel administered topically 3 times a day during 6 months to 33 pediatric patients with hypertrophic scars caused by burns. A total of 30 patients with hypertrophic scars with identical Vancouver Scar Scale values were treated with pressure therapy and included as controls. Improvements were evaluated by Vancouver Scar Scale and a Visual Analog Scale. Safety parameters were determined by the presence of adverse events and monitoring laboratory and hematology parameters. Results: Patients treated with PFD during 6 months presented a continuous monthly statistically significant scar regression in comparison with the initial Vancouver measurement (P = <0.001). PFD group showed a higher improvement of all scar features as compared with control group treated with pressure therapy (P = <0.001). In the PFD group, 9 of 33 patients (27%) had their scores decreased in Vancouver classification by more than 55%, 22 patients (67%) had a 30% to 45% decrease, whereas 2 patients (6%) had a 30% decrease or less. Control group treated with pressure therapy showed a slight improvement in 16% of cases on an average. Patients did not show serious adverse effects or laboratory alterations throughout the study. Conclusions: Topical administration of 8% PFD gel 3 times a day is more effective and safe in the treatment of hypertrophic scars caused by burns in children, as compared with standard pressure therapy. � 2012 by Lippincott Williams & Wilkins
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