135 research outputs found
Insect diversity, community composition and damage index on wild and cultivated murtilla
Plant domestication is a process in which plantsâ chemical defenses that help them cope with herbivores might decline. Consequences of this process could be reflected in an increase in insect pests. Therefore, we carried out a survey to contrast the diversity, damage indexes and insect assemblages between cultivated and wild "Murtilla" (Ugni molinae) plants. The main scientific question put forward in this paper is as follows: Is there a decrease in diversity and an increase in both insect assemblages and damage indexes associated with the domestication process in U. molinae plants? The objective of this report was to compare the structure of a taxonomic assemblage collected in both wild and cultivated plants and their temporal variation over the year. Seven ecotypes and their respective wild populations were selected for these studies. The results showed higher insect assemblages in wild parents (77.35%) vs. cultivated (22.7%). The damage indexes were also higher in wild plants (0.23). The diversity indexes according to Margalef (12.98), the Shannon index (5.15) and the Simpson index (19.04) were higher in wild plants. Moreover, approximately 60 species were determĂnate. We detected changes in insect assemblages, damage and diversity indexes that could suggest that murtilla domestication has altered insect assemblages.M. ChacĂłn-Fuentes, M. Lizama, L. Parra, I Seguel y A. Quiroz. 2016. Diversidad, composiciĂłn de la comunidad de insectos e Ăndice de daño, en murtillas silvestres y cultivadas. Cien. Inv. Agr. 43(1):57-67. La domesticaciĂłn vegetal es un proceso en el cual las plantas pueden disminuir su nivel de defensas quĂmicas para combatir herbĂvoros. Algunas de las posibles consecuencias podrĂan reflejarse en un incremento en el nĂșmero y en la diversidad de insectos. Por lo tanto, se realizĂł un "survey" para comparar el Ăndice de daño y la diversidad de insectos en plantas cultivadas y silvestres de murtilla (Ugni molinae). La principal interrogante de este trabajo fue: ÂżLa domesticaciĂłn en plantas de murtilla, disminuirĂĄ la diversidad e incrementarĂĄ el Ăndice de daño y la comunidad de insectos? El objetivo de esta investigaciĂłn fue comparar la poblaciĂłn de insectos asociada a plantas silvestres y cultivadas ademĂĄs de analizar su variaciĂłn durante el año. Siete ecotipos y sus correspondientes contrapartes silvestres fueron seleccionadas para este estudio. Los resultados mostraron un mayor nĂșmero de insectos en plantas silvestres (77,35%) vs. (22,7%) cultivadas. El Ăndice de daño fue mayor en plantas silvestres (0,23) comparada con plantas cultivadas. El Ăndice de Margalef mostrĂł la mayor riqueza de insectos en plantas cultivadas. Sin embargo, el Ăndice de Shannon fue mayor (5.15) en plantas silvestres. AdemĂĄs, cerca de 60 especies de insectos fueron determinadas. Se detectaron cambios en la comunidad de insectos, Ăndices de daño y diversidad que podrĂan sugerir que la domesticaciĂłn en murtilla ha alterado la comunidad de insectos
Physical and functional interaction between the dopamine transporter and the synaptic vesicle protein synaptogyrin-3.
Uptake through the dopamine transporter (DAT) represents the primary mechanism used to terminate dopaminergic transmission in brain. Although it is well known that dopamine (DA) taken up by the transporter is used to replenish synaptic vesicle stores for subsequent release, the molecular details of this mechanism are not completely understood. Here, we identified the synaptic vesicle protein synaptogyrin-3 as a DAT interacting protein using the split ubiquitin system. This interaction was confirmed through coimmunoprecipitation experiments using heterologous cell lines and mouse brain. DAT and synaptogyrin-3 colocalized at presynaptic terminals from mouse striatum. Using fluorescence resonance energy transfer microscopy, we show that both proteins interact in live neurons. Pull-down assays with GST (glutathione S-transferase) proteins revealed that the cytoplasmic N termini of both DAT and synaptogyrin-3 are sufficient for this interaction. Furthermore, the N terminus of DAT is capable of binding purified synaptic vesicles from brain tissue. Functional assays revealed that synaptogyrin-3 expression correlated with DAT activity in PC12 and MN9D cells, but not in the non-neuronal HEK-293 cells. These changes were not attributed to changes in transporter cell surface levels or to direct effect of the protein-protein interaction. Instead, the synaptogyrin-3 effect on DAT activity was abolished in the presence of the vesicular monoamine transporter-2 (VMAT2) inhibitor reserpine, suggesting a dependence on the vesicular DA storage system. Finally, we provide evidence for a biochemical complex involving DAT, synaptogyrin-3, and VMAT2. Collectively, our data identify a novel interaction between DAT and synaptogyrin-3 and suggest a physical and functional link between DAT and the vesicular DA system
Long-term surveillance of the feline leukemia virus in the endangered Iberian lynx (Lynx pardinus) in Andalusia, Spain (2008-2021)
Feline leukemia virus (FeLV) infection is considered one of the most serious disease threats for the endangered Iberian lynx (Lynx pardinus) Over 14Â years (2008-2021), we investigated FeLV infection using point-of-care antigen test and quantitative real-time TaqMan qPCR for provirus detection in blood and tissues in lynxes from Andalusia (Southern Spain). A total of 776 samples from 586 individuals were included in this study. The overall prevalence for FeLV antigen in blood/serum samples was 1.4% (5/360) (95% CI: 0.2-2.6), FeLV proviral DNA prevalence in blood samples was 6.2% (31/503) (95% CI: 4.1-8.6), and FeLV proviral DNA in tissues samples was 10.2% (34/333) (95% CI: 7-13.5). From a subset of 129 longitudinally sampled individuals, 9.3% (12/129) PCR-converted during the study period. Our results suggest that FeLV infection in the Andalusian population is enzootic, with circulation of the virus at low levels in almost all the sampling years. Moreover, since only one viremic individual succumbed to the infection, this study suggests that lynxes may therefore control the infection decreasing the possibility of developing a more aggressive outcome. Although our results indicate that the FeLV infection in the Iberian lynx from Andalusia tends to stay within the regressive stage, continuous FeLV surveillance is paramount to predict potential outbreaks and ensure the survival of this population
Cien dĂas vistos por CINEP (no. 88 jun-ago 2016)
En esta ediciĂłn de la revista Cien DĂas, se presenta un anĂĄlsis sobre el acuerdo de paz firmado por el presidente Juan Manuel Santos y las FACR-EP, desde la perspectiva del trabajo que realiza CINEP/PPP. AsĂ, ÂŽel acumulado de investigaciĂłn de esta organizaciĂłn sobre el origen y la evoluciĂłn del conflicto armado colombiano, el proceso regional de configuraciĂłn del Estado, la importancia de las luchas sociales en una sociedad democrĂĄtica, la plena vigencia de los derechos humanos y la
movilización social por la paz, asà como la experiencia en educación y acompañamiento a comunidades y organizaciones, es compatible con aquello que estå recogido en el texto del acuerdo.ŽEditorial
¿Por qué Cinep/PPP dice Sà a la Paz? ......... 3
Por: Cinep - Programa por la Paz
Acuerdos de paz
Cese al fuego en perspectiva civil ................ 5
Por: Fernando Sarmiento Santander.
Los derechos de las vĂctimas en el
acuerdo de La Habana (Cuba) ................... 10
Por: Ăngela Ballesteros G.
y Jerry de J. Garavito R.
Innovaciones del proceso de paz
en Colombia (infografĂa)........................... 18
Por: Kristian Herbolzheimer.
Tierras
Segundos ocupantes en la restituciĂłn
de tierras ................................................... 20
Por: Andrea Lopera.
Movimientos sociales
Luchas de trabajadores de la salud............ 30
Por: Leonardo Parra y Gissell Medina.
Seguridad
El ilusionismo de la paz .............................. 36
Por: William Rozo.
Proceso con el ELN
Proceso de paz ELN-Gobierno, un enfermo
crĂtico, pero no terminal ............................ 42
Por: JuliĂĄn Barajas
ImplantaciĂłn de un registro especĂfico de reacciones adversas a ferroterapia endovenosa ambulatoria en un hospital de tercer nivel
Poster [PC-118]
IntroducciĂłn: La Agencia Española de medicamentos y productos sanitarios (AEMPS) estableciĂł en 2013 nuevas recomendaciones para la administraciĂłn intravenosa de preparados de hierro tras la notificaciĂłn de reacciones de hipersensibilidad. Aunque estos preparados mantienen un balance beneficio-riesgo favorable se deben establecer medidas especĂficas para la identificaciĂłn temprana y el tratamiento inmediato de las reacciones alĂ©rgicas.
Pacientes y MĂ©todos: ImplantaciĂłn de medidas de seguridad en la vigilancia de la administraciĂłn intravenosa de preparados de hierro cumpliendo los tiempos de observaciĂłn recomendados por la AEMPS. ElaboraciĂłn de un formulario de reacciones adversas especĂfico para la administraciĂłn de ferroterapia endovenosa, de fĂĄcil cumplimentaciĂłn por el personal de EnfermerĂa del hospital de DĂa de HematologĂa del Hospital Universitario Miguel Servet. AnĂĄlisis de la incidencia de reacciones adversas en relaciĂłn con la ferroterapia prescrita desde la consulta de EritropatologĂa a pacientes con anemia ferropĂ©nica. Estudio descriptivo y prospectivo realizado en un periodo de 4 meses (Enero 2018 â Mayo 2018). AnĂĄlisis de las reacciones adversas detectadas en relaciĂłn al tratamiento con hierro endovenoso disponible en nuestro centro en diferentes posologĂas: hierro-sacarosa (VenoferÂź) 200 mg, hierro-carboximaltosa (FerinjectÂź) 500 mg y 1 gr.
Resultados: Se han estudiado 77 pacientes. 52 hombres y 25 mujeres. La mediana de edad fue 68 años. 21 (27, 27%) pacientes tenĂan alergias o intolerancias conocidas previamente. 53 (68, 83%) recibieron tratamiento con hierro sacarosa (200mg) y 24 (31, 17%) con hierro carboximaltosa [20 (83, 83%) 500mg, 4 (16, 67%) 1g]. Todos los pacientes cumplieron los tiempos de vigilancia recomendados por la AEMPS. Ănicamente dos pacientes presentaron reacciones adversas al hierro y ambos con dosis de 200mg de hierro sacarosa. Los dos presentaron reacciones gastrointestinales leves de duraciĂłn autolimitada de unos 15 minutos, sin repercusiĂłn orgĂĄnica y sin precisar medicaciĂłn para su resoluciĂłn.
Conclusiones: Las reacciones graves de hipersensibilidad al hierro endovenoso son, como en nuestra serie de casos, efectos adversos muy poco frecuentes. A diferencia de los casos descritos de reacciones graves anafilĂĄcticas, en nuestro centro no hemos detectado ninguna gravedad en todos los tratamientos administrados. Tampoco hemos podido relacionar las dos reacciones leves detectadas con predisposiciĂłn previa de los pacientes al desarrollo de alergias medicamentosas u otras intolerancias, ni tampoco con la dosis de hierro o preparado administrado. Dada la alerta de la AEMPS, nuestro registro especĂfico de reacciones adversas a ferroterapia endovenosa nos permite estar alerta y constatar de manera objetiva la existencia o no de dichas reacciones asĂ como su gravedad
EtnometodologĂa para la comprensiĂłn y el manejo de la Enfermedad de Chagas en las poblaciones indĂgenas Wiwa asentadas en la vertiente suroriental de la Sierra Nevada de Santa Marta
El objetivo de este trabajo fue establecer prevalencia de la Enfermedad de Chagas en las comunidades Wiwa de la Sierra Nevada de Santa Marta trascendiendo el modelo de investigaciĂłn biomĂ©dica sustentado en el paradigma positivista, e involucrando la dimensiĂłn sociocultural y ambiental que caracteriza este fenĂłmeno, desde la sostenibilidad como un nuevo paradigma de las ciencias. Se realizĂł un muestreo probabilĂstico de las 15 comunidades Wiwa asentadas en la zona de San Juan del CĂ©sar, Departamento de la Guajira, se realizaron los procedimientos biomĂ©dicos definidos para investigaciones epidemiolĂłgicas, paralelamente se realizaron procedimientos culturales desde el saber tradicional de las comunidades Wiwa, garantizando la armonĂa de las comunidades ante la agresiĂłn biomĂ©dica de su espacio ambiental, social y cultural. Se obtuvo una prevalencia de 33.5%, concordante con las cifras de Enfermedad de Chagas encontradas en las otras vertientes de la sierra, reflejando condiciones similares que predisponen a la presencia de la enfermedad. Se estableciĂł como esta enfermedad es inexistente en el sistema mĂ©dico tradicional de los Wiwa, y sĂłlo el insecto vector es reconocido aunque no considerado como agente perturbador de la salud de las comunidades. A partir de la consideraciĂłn del vector como eje integrador de las dos culturas se describen las caracterĂsticas sociales, ambientales y culturales que definen la Enfermedad de Chagas en los Wiwa y de esta forma, la posibilidad de su comprensiĂłn y manejo desde factores complementarios al modelo biomĂ©dico.The goal of this research was to establish Chagas Disease prevalence in Wiwa communities of Sierra Nevada de Santa Marta, beyond biomedical research model supported in positivist paradigm, towards sustainability as a new paradigm of science, by which this phenomenon has a social, cultural and environmental dimensions. A probabilistic sample was made it in 15 Wiwa communities placed in San Juan del Cesar area, La Guajira. Biomedical procedures defined from epidemiological research were made them, and simultaneously, cultural procedures derived from ancestral knowledge of Wiwa communities were made them, guarantee harmony in communities against biomedical aggression of environmental, cultural and social dimensions. A 33.5% prevalence of Chagas Disease was obtained, similar to prevalence reported in other sierra's slope with similar conditions related to disease transmission. It was established that chagas disease doesn't exist in Wiwa traditional medical system, and only vector insect is recognized but not considered as a disturbed agent of communities' health. Social, environmental and cultural characteristics that define Chagas disease were described since consideration that vector insect is an integrating axis of two cultures, and in this way, possibilities to comprehension and management of chagas disease, complementing biomedical model, were described too
Elective Cancer Surgery in COVID-19-Free Surgical Pathways During the SARS-CoV-2 Pandemic: An International, Multicenter, Comparative Cohort Study.
PURPOSE: As cancer surgery restarts after the first COVID-19 wave, health care providers urgently require data to determine where elective surgery is best performed. This study aimed to determine whether COVID-19-free surgical pathways were associated with lower postoperative pulmonary complication rates compared with hospitals with no defined pathway. PATIENTS AND METHODS: This international, multicenter cohort study included patients who underwent elective surgery for 10 solid cancer types without preoperative suspicion of SARS-CoV-2. Participating hospitals included patients from local emergence of SARS-CoV-2 until April 19, 2020. At the time of surgery, hospitals were defined as having a COVID-19-free surgical pathway (complete segregation of the operating theater, critical care, and inpatient ward areas) or no defined pathway (incomplete or no segregation, areas shared with patients with COVID-19). The primary outcome was 30-day postoperative pulmonary complications (pneumonia, acute respiratory distress syndrome, unexpected ventilation). RESULTS: Of 9,171 patients from 447 hospitals in 55 countries, 2,481 were operated on in COVID-19-free surgical pathways. Patients who underwent surgery within COVID-19-free surgical pathways were younger with fewer comorbidities than those in hospitals with no defined pathway but with similar proportions of major surgery. After adjustment, pulmonary complication rates were lower with COVID-19-free surgical pathways (2.2% v 4.9%; adjusted odds ratio [aOR], 0.62; 95% CI, 0.44 to 0.86). This was consistent in sensitivity analyses for low-risk patients (American Society of Anesthesiologists grade 1/2), propensity score-matched models, and patients with negative SARS-CoV-2 preoperative tests. The postoperative SARS-CoV-2 infection rate was also lower in COVID-19-free surgical pathways (2.1% v 3.6%; aOR, 0.53; 95% CI, 0.36 to 0.76). CONCLUSION: Within available resources, dedicated COVID-19-free surgical pathways should be established to provide safe elective cancer surgery during current and before future SARS-CoV-2 outbreaks
Elective cancer surgery in COVID-19-free surgical pathways during the SARS-CoV-2 pandemic: An international, multicenter, comparative cohort study
PURPOSE As cancer surgery restarts after the first COVID-19 wave, health care providers urgently require data to determine where elective surgery is best performed. This study aimed to determine whether COVID-19âfree surgical pathways were associated with lower postoperative pulmonary complication rates compared with hospitals with no defined pathway. PATIENTS AND METHODS This international, multicenter cohort study included patients who underwent elective surgery for 10 solid cancer types without preoperative suspicion of SARS-CoV-2. Participating hospitals included patients from local emergence of SARS-CoV-2 until April 19, 2020. At the time of surgery, hospitals were defined as having a COVID-19âfree surgical pathway (complete segregation of the operating theater, critical care, and inpatient ward areas) or no defined pathway (incomplete or no segregation, areas shared with patients with COVID-19). The primary outcome was 30-day postoperative pulmonary complications (pneumonia, acute respiratory distress syndrome, unexpected ventilation). RESULTS Of 9,171 patients from 447 hospitals in 55 countries, 2,481 were operated on in COVID-19âfree surgical pathways. Patients who underwent surgery within COVID-19âfree surgical pathways were younger with fewer comorbidities than those in hospitals with no defined pathway but with similar proportions of major surgery. After adjustment, pulmonary complication rates were lower with COVID-19âfree surgical pathways (2.2% v 4.9%; adjusted odds ratio [aOR], 0.62; 95% CI, 0.44 to 0.86). This was consistent in sensitivity analyses for low-risk patients (American Society of Anesthesiologists grade 1/2), propensity scoreâmatched models, and patients with negative SARS-CoV-2 preoperative tests. The postoperative SARS-CoV-2 infection rate was also lower in COVID-19âfree surgical pathways (2.1% v 3.6%; aOR, 0.53; 95% CI, 0.36 to 0.76). CONCLUSION Within available resources, dedicated COVID-19âfree surgical pathways should be established to provide safe elective cancer surgery during current and before future SARS-CoV-2 outbreaks
Safety and effectiveness of CIMAvax-EGF administered in community polyclinics
In spite of the advances in immunotherapy and targeted therapies, lung cancer continues to be the leading cause of cancer-related death. The epidermal growth factor receptor is an established target for non-small cell lung cancer (NSCLC), and its overactivation by the ligands can induce accelerated proliferation, angiogenesis, and metastasis as well as proinflammatory or immunosuppressive signals. CIMAvax-EGF is an epidermal growth factor (EGF)-depleting immunotherapy that is approved for the treatment of NSCLC patients in Cuba. The study was designed as a phase IV trial to characterize the safety and effectiveness of CIMAvax-EGF in advanced NSCLC patients treated in 119 community polyclinics and 24 hospitals. CIMAvax-EGF treatment consisted of four bi-weekly doses followed by monthly boosters. Overall, 741 NSCLC patients ineligible for further cancer-specific treatment were enrolled. CIMAvax-EGF was safe, and the most common adverse events consisted of mild-to-moderate injection site reactions, fever, chills, tremors, and headache. For patients completing the loading doses, the median survival was 9.9 months. For individuals achieving at least stable disease to the frontline and completing vaccination induction, the median survival was 12 months. Most of the functional activities and symptoms evaluated through the European Organisation for Research and Treatment of Cancer (EORTC) QLQ-C30 questionnaire improved over time. In conclusion, this real-world trial demonstrated that CIMAvax-EGF was safe and effective in patients who were vaccinated in the maintenance scenario. A larger effect was seen in subjects with poor prognosis like those with squamous tumors and high EGF levels. Remarkably, this community-based intervention was very important because it demonstrated the feasibility of treating advanced lung cancer patients with active immunotherapy in primary care institutions. In addition to CIMAvax-EGF, patients received supportive care at the community clinic. Vaccine administration by the family doctors at the polyclinics reduced the patientsâ burden on the medical oncology services that continued providing chemotherapy and other complex therapies. We conclude that community polyclinics constitute the optimal scenario for administering those cancer vaccines that are safe and require prolonged maintenance in patients with advanced cancer, despite the continuous deterioration of their general condition.Clinical trial registrationhttps://rpcec.sld.cu/trials/RPCEC00000205-En, identifier RPCEC00000205
Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic
This study aimed to describe the change in surgical practice and the impact of SARS-CoV-2 on mortality after surgical resection of colorectal cancer during the initial phases of the SARS-CoV-2 pandemic
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