3.040 AMICOR (24)

AMICOR 3.040 

#Dra. Valderês A. R. Achutti (*13/06/1931+15/06/2021) Hidelberg década de 90

#Da: ZH do dia 21/07

Foi um belo encontro que muito nos honrou ao representar tantos colegas  numa entidade que nos congrega, defendende nossa profissão e os principios e valores que a caracterizam. Quando estiver disponível, terei o prazer de divulgar o acesso à memória do evento.

#From: NATURE

Early cancer diagnosis now possible with new blood test

A promising new diagnostic designed to detect cancer before symptoms appear is considered to be ready for primetime and will be piloted by England’s National Health Service (NHS) in fall of 2021. The non-invasive blood test helps to detect types of cancer that are typically more difficult to diagnose in early stages—among them, head and neck, ovarian, pancreatic, oesophageal, and some blood cancers. The test hinges on recognizing bits of DNA released from tumors that become free-floating in the bloodstream. It was developed using a machine-learning algorithm that was fine-tuned by feeding the system methylation patterns in DNA in blood samples from thousands of patients. The test has a success rate of about 52% across all cancers and a false positive incidence of less than 1%. (Read More)

Environmental enrichment preserves a young DNA methylation landscape in the aged mouse hippocampus

• 
  Sara Zocher, 
• Rupert W. Overall, 
• Mathias Lesche, 
• Andreas Dahl & 
• Gerd Kempermann 

Nature Communications volume 12, Article number: 3892 (2021) 

Aging is associated with a progressive decline in brain function that manifests in cognitive impairments, increased risk for neurodegenerative diseases, and loss of neural plasticity. Lifestyle factors, including physical exercise, cognitive stimulation, and social interaction, attenuate age-related reductions of brain function in humans1,2,3,4, contributing to what is called “reserve” or “maintenance” of brain function5,6. 

Are you genetically protected from obesity?
In a study that involved the genomes of more than half a million people, researchers found that people carrying mutations inactiviting a copy of a certain gene tended to have half the odds of being obese. This gene—GPR75—is one of the 16 tied to body mass index (BMI), a flawed but still generally-accepted measure of obesity. While a mutation on this gene only occurs in about 1 in 3000 people, its protective effects has potential implications for seeking out drugs that could switch it off therapeutically. (Science Magazine)

#From: NATURE

Borgs seem to be associated with single-celled microorganisms known as archaea, shown in this scanning-electron microscopy image. (Eye of Science/SPL)

Huge DNA ‘Borg’ structures discovered The Borg have landed — or, at least, researchers have discovered their counterparts here on Earth. Scientists analysed samples from muddy sites in the western United States and found DNA structures that seem to scavenge and ‘assimilate’ genes from microorganisms in their environment, much like the fictional Star Trek ‘Borg’ aliens who assimilate the knowledge and technology of other species. These extra-long DNA strands, which the scientists named in honour of the aliens, join a diverse collection of genetic structures — circular plasmids, for example — known as extrachromosomal elements. Nature | 8 min read China launches largest carbon market China, the world’s largest emitter of greenhouse gases, has launched its first national emissions-trading scheme. Such carbon-pricing mechanisms already exist in around 45 countries, but China’s is the world’s biggest. It has been plagued by delays, and researchers argue that it might not be ambitious enough to enable the country to meet goals including a 2030 deadline for peak emissions and a 2060 target for net-zero emissions. But they are hopeful that the market will have a far-reaching impact over time. Nature | 8 min read #De:ZH Hospital de Clínicas celebra meio século Cerimônia com balões dourados e plantio de árvores será realizada hoje no terraço de um dos novos prédios da instituição Do alto de um dos prédios novos do complexo do Hospital de Clínicas de Porto Alegre (HCPA), uma revoada de balões dourados e o plantio de mudas de árvores marcarão, às 11h30min de hoje, o aniversário de 50 anos da instituição. Os protagonistas da cerimônia, pensada para simbolizar esperança, serão 50 funcionários escolhidos por sorteio, que também manifestarão seus desejos para o futuro. O palco da celebração, o terraço do Bloco B, representa, justamente, os planos para o que ainda vem pela frente na já consolidada história de cinco décadas que transformou o HCPA em um centro de referência em assistência, ensino e pesquisa, conduzido por uma comunidade de 10,3 mil funcionários, professores, residentes, pesquisadores, estudantes, estagiários e jovens aprendizes. .......História em números Mais de 20 milhões de consultas 1,2 milhão de cirurgias 1 milhão de internações 130 mil partos 8 mil transplantes Atualmente, são 10,3 mil funcionários, professores, residentes, pesquisadores, estudantes, estagiários e jovens aprendizes; 55 serviços médicos, 16 de enfermagem e oito multiprofissionais, entre outras áreas #From Scientific America China pode estar tomando dianteira na corrida  global por novas tecnologias quânticas Divulgação de três feitos importantes no último mês mostra que competição entre EUA e China está acirrada. Superioridade tecnológica tem implicações tanto para ciência quanto para as relações geopolíticas. Representação artística de uma partícula quântica. Foto: Shutterstock Quando uma equipe de cientistas chineses transmitiu fótons emaranhados a partir do satélite Micius do país para conduzir a primeira videochamada segura por criptografia quântica em 2017, os especialistas declararam que a China alcançou assumiu a liderança na corrida pela comunicação quântica. Novas pesquisas sugerem que essa liderança também se estende à computação quântica. Três artigos postados no arXiv.org no mês passado por físicos da Universidade de Ciência e Tecnologia da China (USTC) relataram importantes avanços tanto na comunicação quanto na computação quântica. #De: BBC NEWS  100 anos da vacina BCG e o misterioso cientista Uruguaio  que trouxe a vacina contra a tuberculose ao Brasil André Biernath - @andre_biernath Da BBC News Brasil em São Paulo 19 julho 2021 CRÉDITO,GETTY IMAGES Legenda da foto, Todos os anos, 100 milhões de crianças recebem a BCG no mundo inteiro Ninguém sabe onde e quando ele nasceu. A data e local da morte também são desconhecidos. Não há sequer uma foto de seu rosto. Mesmo assim, Julio Elvio Moreau figura na lista dos personagens mais importantes da saúde pública brasileira: foi ele quem, ainda na década de 1920, trouxe ao nosso país as primeiras culturas de bactérias para a fabricação da vacina BCG, que nos protege contra a tuberculose e suas formas mais graves./.../ #From:NATURE This exquisitely detailed image charts the connections between thousands of cells in a tiny sliver of human brain. The sample was taken from the cortex — the part of the brain responsible for complex thought — and cut into thin slices that were imaged using electron microscopes. Scientists then stitched the images back together digitally and analysed them with the help of artificial-intelligence programs. These can, for example, map the positions of synapses — junctions where electrical signals pass between nerve cells. Different types of neuron have been artificially colour-coded. See more of the month’s sharpest science shots, selected by Nature’s photo team. (Nature | Leisurely scroll) (Credit: DR Berger, A Shapson-Coe, JW Lichtman) #From:PsychCentral Why Some Stress Can Actually Be Good for You According to research, some stress can boost performance, increase immunity, and sharpen memory. Here’s how it works. READ MORE   What Are the Stages of Sleep? Medically reviewed by Nicole Washington, DO, MPH —  Written by Kimberly Drake — Updated on May 31, 2021 Cycles Stages How much sleep is enough Sleep tips Have you ever wondered what happens when you sleep? Interestingly, a lot goes on with your brain and body while you’re catching some Zzz’s. Share on Pinterest BONNINSTUDIO/Stocksy United While you’re snoozing, your mind and body journey through a series of events designed to reduce your consciousness and awareness, relax your muscles and alter your brain waves. Some organs get to power down to minimal functionality to maintain or reset, while others get to work as a cleanup crew after the main event. These events play out in stages that repeat in cycles several times throughout a typical 7- to 8-hour sleep session. Yet you remain blissfully unaware of what your brain and body are doing throughout all this activity. So, how many stages of sleep do you go through? And what is a sleep cycle?/.../ #From:The Public Domain Review <newsletter@publicdomain para mim Vol. 11 #11 NEW ESSAY Picturing Scent: The Tale of a Beached Whale What can visual art teach us about scent, stench, and the mysterious substance known as ambergris? Lizzie Marx follows a “whale-trail” across history to discover the olfactory paradoxes of the Dutch Golden Age. Read More »

#From: MEDSCAPE

A influência do envelhecimento sobre os exames cardiológicos

Uma recente enquete publicada no site do American College of Cardiology (ACC) surpreendeu o Dr. Mauricio Wajngarten pela quantidade de respostas erradas a respeito das alterações observadas em exames diagnósticos relacionadas ao envelhecimento "normal". Citando referências atuais sobre o tema, o cardiologista destaca 10 aspectos que devem ser levados em conta na interpretação de exames de idosos.

Leia Agora Fromn: Quanta Magazine LANGLANDS PROGRAM | ALL TOPICS   New Shape Opens ‘Wormhole’ Between Numbers and Geometry By KEVIN HARTNETT Laurent Fargues and Peter Scholze have found a new, more powerful way of connecting number theory and geometry as part of the sweeping Langlands program. Read the article EXPLAINERS   How Bell’s Theorem Proved ‘Spooky Action at a Distance’ Is Real By BEN BRUBAKER   The root of today’s quantum revolution was John Stewart Bell’s 1964 theorem showing that quantum mechanics really permits instantaneous connections between far-apart locations. Read the explainer Related:  A New Theorem Maps Out the Limits of Quantum Physics by Anil Ananthaswamy (2020) GENOMICS   Plasmid, Virus or Other? DNA ‘Borgs’ Blur Boundaries. By JORDANA CEPELEWICZ and ALLISON WHITTEN Biologists have uncovered novel DNA structures inside archaea dredged from muddy swamps. Named after a Star Trek alien race, these “Borgs” could open new possibilities for microbiology. Read the blog Related:  New Giant Viruses Further Blur the Definition of Life by Jordana Cepelewicz (2018) QUANTIZED ACADEMY   How to Find Rational Points Like Your Job Depends on It By PATRICK HONNER   Using high school algebra and geometry, and knowing just one rational point on a circle or elliptic curve, we can locate infinitely many others. Read the column Related:  Without a Proof, Mathematicians Wonder How Much Evidence Is Enough by Kevin Hartnett (2018) QUANTA SCIENCE PODCAST   Pinning Down When Earth’s Crust Cracked, Then Came to Life Podcast hosted by SUSAN VALOT; Story by HOWARD LEE Learn how geochemists finally cracked the mystery of when plate tectonics began on Earth and what drove the evolution of complex life.  Listen to the podcast Read the article   Around the Web Ripples of the Multiverse The “many worlds” interpretation of quantum mechanics isn’t what you think. In this PBS Space Time video, Matt O’Dowd explains how the “worlds” would be more like ripples on a pond than branches in a timeline. If other versions of you exist, what does that mean for the concept of self? Philip Ball wrote for Quanta about the idea’s troubling implications in 2018. Private Jets The EHT telescope has dropped its latest black hole portrait. The planet-sized array imaged the jets unleashed by a nearby black hole, Maria Temming reports for Science News. The process that fires stuff away from a black hole remains mysterious, but EHT images are helping to demystify the jets, Natalie Wolchover reported for Quanta this year. #From: AEON Magazine Stories and The divine Dante At 700, Dante’s Divine Comedy is as modern as ever – a lesson in spiritual intelligence that makes us better at being alive by Mark Vernon Lembrando  publicação no AMCOR 3.037 de 27 de Junho p.p. #08/ julho Lançamento  Quando tive a honra e o prazer de receber através de minha filha Dra. Lúcia Helena, um exemplar dedicado e assinado pelos autores.