Philippine Ayta possess the highest level of Denisovan ancestry in the world.

Multiple lines of evidence show that modern humans interbred with archaic Denisovans. Here, we report an account of shared demographic history between Australasians and Denisovans distinctively in Island Southeast Asia. Our analyses are based on ∼2.3 million genotypes from 118 ethnic groups of the Philippines, including 25 diverse self-identified Negrito populations, along with high-coverage genomes of Australopapuans and Ayta Magbukon Negritos. We show that Ayta Magbukon possess the highest level of Denisovan ancestry in the world-∼30%-40% greater than that of Australians and Papuans-consistent with an independent admixture event into Negritos from Denisovans. Together with the recently described Homo luzonensis, we suggest that there were multiple archaic species that inhabited the Philippines prior to the arrival of modern humans and that these archaic groups may have been genetically related. Altogether, our findings unveil a complex intertwined history of modern and archaic humans in the Asia-Pacific region, where distinct Islander Denisovan populations differentially admixed with incoming Australasians across multiple locations and at various points in time.

Multiple migrations to the Philippines during the last 50,000 years.

Island Southeast Asia has recently produced several surprises regarding human history, but the region's complex demography remains poorly understood. Here, we report ∼2.3 million genotypes from 1,028 individuals representing 115 indigenous Philippine populations and genome-sequence data from two ∼8,000-y-old individuals from Liangdao in the Taiwan Strait. We show that the Philippine islands were populated by at least five waves of human migration: initially by Northern and Southern Negritos (distantly related to Australian and Papuan groups), followed by Manobo, Sama, Papuan, and Cordilleran-related populations. The ancestors of Cordillerans diverged from indigenous peoples of Taiwan at least ∼8,000 y ago, prior to the arrival of paddy field rice agriculture in the Philippines ∼2,500 y ago, where some of their descendants remain to be the least admixed East Asian groups carrying an ancestry shared by all Austronesian-speaking populations. These observations contradict an exclusive "out-of-Taiwan" model of farming-language-people dispersal within the last four millennia for the Philippines and Island Southeast Asia. Sama-related ethnic groups of southwestern Philippines additionally experienced some minimal South Asian gene flow starting ∼1,000 y ago. Lastly, only a few lowlanders, accounting for <1% of all individuals, presented a low level of West Eurasian admixture, indicating a limited genetic legacy of Spanish colonization in the Philippines. Altogether, our findings reveal a multilayered history of the Philippines, which served as a crucial gateway for the movement of people that ultimately changed the genetic landscape of the Asia-Pacific region.

Trombólisis exitosa en la enfermedad cerebrovascular: reporte de un caso / Successful thrombolysis in cerebrovascular disease: a case report

Resumen El factor de riesgo más importante para presentar una enfermedad cerebrovascular (EVC) es la edad. El ictus es la causa más frecuente de discapacidad adquirida en la edad adulta. De acuerdo con la Organización Mundial de la Salud, se estima que en el año 2050, casi la mitad de la población mayor de 65 años podría sufrir o haber sufrido un EVC. Debido a la gran incidencia y al impacto negativo que tiene esta enfermedad, presentamos el caso clínico de una trombólisis exitosa en una paciente con ictus isquémico y crisis hipertensiva en el Servicio de Urgencias. Ponemos de manifiesto la adecuada evaluación con las diferentes escalas existentes, clínicas, radiológicas y pronósticas (NIHSS, Dragon Score, ASPECT, HAT score), así como los criterios de inclusión y exclusión, los cuales son indispensables para administrar una terapia de repercusión intravenosa. Conclusiones En México, los casos reportados con trombólisis exitosa son sólo el 5%. En este caso de éxito, la adecuada actuación en el Servicio de Urgencias de primer contacto impactó de manera positiva en el pronóstico de la paciente, ya que el diagnóstico oportuno y la administración de rTPA (activador tisular del plasminógeno) evitó secuelas importantes y consiguió una mejor calidad de vida -la cual se ve disminuida hasta en 70% de los pacientes que sufren un EVC (según estudios realizados en los EUA)-.

Abstract The most important risk factor for presenting a cerebrovascular disease (CVA) is age. Stroke is also the most frequent cause of disability acquired in adulthood. According to the World Health Organization, it is estimated that by the year 2050, almost half of the population over 65 could suffer or have suffered a CVA. Due to the high incidence and negative impact of this disease, we present a clinical case of successful thrombolysis in a patient with ischemic stroke and hypertensive crisis in the emergency department. We emphasize the adequate evaluation with the different existing clinical, radiological and predictive scales (NIHSS, Dragon Score, ASPECT, HAT score), as well as the inclusion and exclusion criteria, which are indispensable to administer an intravenous reperfusion therapy. Conclusions In Mexico, the cases reported with successful thrombolysis are only 5%. In this successful case, the proper performance in the emergency service impacted positively on the prognosis of the patient, since the timely diagnosis and administration of rTPA avoided important sequelae and provided a better quality of Life, which is decreased in up to 70% of patients suffering from a CVA (according to studies conducted in the USA).