Background Non-publication, incomplete publication and excessively slow publication of clinical trial outcomes contribute to research waste and can harm patients. While research waste in German ...academic trials is well documented, research waste in Germany related to a specific disease area across non-commercial and commercial sponsors has not previously been assessed. Methods In this cohort study, we used public records from three clinical trial registries to identify 70 completed or terminated clinical trials involving women with metastatic breast cancer with trial sites in Germany. We then searched registries and the literature for trial outcomes and contacted sponsors about unreported studies. Results We found that 66/70 trials (94.3%) had made their results public. Only 13/70 (18.6%) trials had reported results within one year of completion as recommended by the World Health Organisation (WHO). The outcomes of 4/70 trials (5.7%) had not been made public at all, but only one of those trials had recruited a significant number of patients. Conclusions Discussions about research waste in clinical trials commonly focus on weakly designed or unreported trials. We believe that late reporting of results is another important form of research waste. In addition, a discussion regarding the appropriate ethical and legal rules for reporting the results of terminated trials might add value. German legislation now requires sponsors to upload the results of some clinical trials onto a trial registry within one year of trial completion, but these laws only cover around half of all trials. Our findings highlight the potential benefits of extending the scope of national legislation to cover all interventional clinical trials involving German patients.
Artificial Mitochondrial Transfer or Transplant (AMT/T) can be used to reduce the stress and loss of viability of damaged cells. In MitoCeption, a type of AMT/T, the isolated mitochondria and ...recipient cells are centrifuged together at 4 °C and then co-incubated at 37 °C in normal culture conditions, inducing the transfer. Ultraviolet radiation (UVR) can affect mitochondria and other cell structures, resulting in tissue stress, aging, and immunosuppression. AMT/T could be used to repair UVR cellular and mitochondrial damage. We studied if a mitochondrial mix from different donors (Primary Allogeneic Mitochondrial Mix, PAMM) can repair UVR damage and promote cell survival.
Using a simplified adaption of the MitoCeption protocol, we used peripheral blood mononuclear cells (PBMCs) as the recipient cell model of the PAMM in order to determine if this protocol could repair UVR damage. Our results showed that when PBMCs are exposed to UVR, there is a decrease in metabolic activity, mitochondrial mass, and mtDNA sequence stability as well as an increase in p53 expression and the percentage of dead cells. When PAMM MitoCeption was used on UVR-damaged cells, it successfully transferred mitochondria from different donors to distinct PBMCs populations and repaired the observed UVR damage.
Our results represent an advancement in the applications of MitoCeption and other AMT/T. We showed that PBMCs could be used as a PAMM source of mitochondria. We also showed that these mitochondria can be transferred in a mix from different donors (PAMM) to UVR-damaged, non-adherent primary cells. Additionally, we decreased the duration of the MitoCeption protocol.
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It is considered that globally, 71 million people have chronic infection caused by the virus of Hepatitis C (HCV). It is estimated that in 2016 approximately 399,000 people died due to it. Among the ...infected people 70% develop a chronic infection caused by HCV. In Mexico, it was reported that 6% of them is type C, and the most common genotype is 1. Interferon and ribavirin, hardly ever used in developed countries, are still recommended in Mexico for treating this infection.
To assess the effectiveness of direct acting antivirals (DAA) in Mexican population with HC.
In a retrospective, multicenter study in 20 hospitals in Mexico, information of patients with HC and treated with DAA was gathered.
A total of 913 patients were included. The gender distribution was 599 women and 314 men, the mean age was 58.88 ± 12.10 years old. The most frequent genotype was genotype 1. It was found that there is 99% of sustained viral response in genotype 1. Presented side effects were slight.
We found a very high SVR rate, 99%, which is why applying DAA immediately after a patient is diagnosed with Hepatitis C to avoid further complications is recommended.
Core tip: In Mexico, a large sample of patients was documented, where it was concluded that DAA should be used without the fear of adverse events, and to be certain about an SVR to the most frequent genotype in our population. However, the use of pangenomic DAA must be considered.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
The fresh or cryopreserved human umbilical cord (HUC) and its byproducts, such as cells and extracts, have different uses in tissue regeneration. Defining what HUC byproduct is more effective in a ...particular application is a challenge. Furthermore, the methods of isolation, culture and preservation, may affect cell viability and regenerative properties. In this article, we review the HUC and its byproducts' applications in research and clinical practice. We present our results of successful use of HUC as a patch to treat gastroschisis and its potential to be applied in other conditions. Our
results show an increase in proliferation and migration of human fibroblasts by using an acellular HUC extract. Our goal is to promote standardization of procedures and point out that applications of HUC and its byproducts, as well as the resulting advances in regenerative medicine, will depend on rigorous quality control and on more research in this area.
Introduction. Speaking is considered one of the most difficult skills to be developed in class when teaching a foreign language. Therefore, teachers need to look for alternatives to enhance learners’ ...oral production. In this regard, Communicative activities (CA) play a fundamental role in language teaching due to the fact they provide them with opportunities to use language as in real situations. Objective. The main goal of this research is to provide a general overview of Communicative activities to enhance oral production in the EFL classroom. Methodology. This article was based on the qualitative approach. A descriptive - documentary research was carried out through an extensive bibliographic literature review about the main principles of the Communicative Approach, communicative activities, types of CA, and speaking. Results. Results from the reviewed research investigations show that they are quite useful for teachers and learners since CA facilitate learners’ oral production employing the interaction among classmates and teachers. Conclusion. Besides, Communicative activities encourage learners to develop their language competencies due to the dynamic in which these activities are carried out in the EFL classroom.
Artificial Mitochondrial Transfer or Transplant (AMT/T) can be used to reduce the stress and loss of viability of damaged cells. In MitoCeption, a type of AMT/T, the isolated mitochondria and ...recipient cells are centrifuged together at 4 degreesC and then co-incubated at 37 degreesC in normal culture conditions, inducing the transfer. Ultraviolet radiation (UVR) can affect mitochondria and other cell structures, resulting in tissue stress, aging, and immunosuppression. AMT/T could be used to repair UVR cellular and mitochondrial damage. We studied if a mitochondrial mix from different donors (Primary Allogeneic Mitochondrial Mix, PAMM) can repair UVR damage and promote cell survival. Using a simplified adaption of the MitoCeption protocol, we used peripheral blood mononuclear cells (PBMCs) as the recipient cell model of the PAMM in order to determine if this protocol could repair UVR damage. Our results showed that when PBMCs are exposed to UVR, there is a decrease in metabolic activity, mitochondrial mass, and mtDNA sequence stability as well as an increase in p53 expression and the percentage of dead cells. When PAMM MitoCeption was used on UVR-damaged cells, it successfully transferred mitochondria from different donors to distinct PBMCs populations and repaired the observed UVR damage. Our results represent an advancement in the applications of MitoCeption and other AMT/T. We showed that PBMCs could be used as a PAMM source of mitochondria. We also showed that these mitochondria can be transferred in a mix from different donors (PAMM) to UVR-damaged, non-adherent primary cells. Additionally, we decreased the duration of the MitoCeption protocol.
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Introducción: en julio de 2009, la Organización Mundial de la Salud alertó acerca de la pandemia debida al virus A H1 NI que elevó la fase epidemiológica a 6, producto del grado de diseminación del ...virus pero no a la gravedad e impacto de la enfermedad, lo que depende de la vulnerabilidad de la población y la capacidad de respuesta sanitaria de cada región, país y continente respectivamente. Objetivo: analizar el perfil epidemiológico de la influenza A H1N1 en el departamento de Cochabamba, Bolivia. Métodos: el presente estudio es de tipo observacional, descriptivo y de corte transversal, realizado en el departamento de Cochabamba, mediante el análisis de todas las fichas epidemiológicas de los casos sospechosos durante las gestiones 2009 al 2014, con una muestra de 3655 fichas. Resultados: del total de casos sospechosos el 52% fueron varones y el 48 % mujeres, el grupo etario con mayor proporción fue el de los menores de 5 años con un 16%, del total de casos sospechosos el 79% fueron negativos y solo el 21% fueron positivos, los síntomas más frecuentes fueron la tos presente en el 84% de los casos, la faringitis en el 78%, la cefalea y la rinorrea en el 76%. Conclusión: la prevalencia de Influenza Humana A H1N1 en el departamento de Cochabamba, disminuyó progresivamente, existiendo un rebrote de la patología el 2014 con un aumento en el número de casos positivos y los casos de mortalidad.
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9.
Temas varios Basaure, Mauro; Bernete García, Francisco; Castillejo, Alejandro ...
Revista de estudios sociales (Bogotá, Colombia),
2016
Journal Article
Peer reviewed
Open access
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