Toplam 801 içerik listeleniyor
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Researchers find how proteins control gene expression by binding both DNA and RNA
Proteins that bind DNA or RNA are usually put in different categories, but researchers at Umeå University in Sweden and Inserm in France recently showed how the p53 protein has the capacity to bind both and how this controls gene expression on the levels of both transcription (RNA synthesis) and mRNA translation (protein synthesis). The discovery was presented in the July issue of the journal Oncogene. The p53 tumour suppressor protein is best known for its capacity to bind DNA and control...
https://www.biyologlar.com/researchers-find-how-proteins-control-gene-expression-by-binding-both-dna-and-rna -
Hepatitis A-like virus identified in seals
Scientists in the Center for Infection and Immunity at Columbia University's Mailman School of Public Health have discovered a new virus in seals that is the closest known relative of the human hepatitis A virus. The finding provides new clues on the emergence of hepatitis A. The research appears in the July/August issue of mBio, the online open-access journal of the American Society for Microbiology. "Until now, we didn't know that hepatitis A had any close relatives, and we thought that only...
https://www.biyologlar.com/hepatitis-a-like-virus-identified-in-seals -
Fetal mice with Zika infection get microcephaly
Mouse fetuses injected with the Asian Zika virus strain and carried to term within their pregnant mothers display the characteristic features of microcephaly, researchers in China report May 11 in Cell Stem Cell. As expected, the virus infected the neural progenitor cells, and infected brains reveal expression of genes related to viral entry, altered immune response, and cell death. The authors say this is direct evidence that Zika infection causes microcephaly in a mammalian animal...
https://www.biyologlar.com/fetal-mice-with-zika-infection-get-microcephaly -
Fetal mice with Zika infection get microcephaly
Mouse fetuses injected with the Asian Zika virus strain and carried to term within their pregnant mothers display the characteristic features of microcephaly, researchers in China report May 11 in Cell Stem Cell. As expected, the virus infected the neural progenitor cells, and infected brains reveal expression of genes related to viral entry, altered immune response, and cell death. The authors say this is direct evidence that Zika infection causes microcephaly in a mammalian animal...
https://www.biyologlar.com/fetal-mice-with-zika-infection-get-microcephaly -
Mouse models show how Zika infects a fetus during pregnancy
Researchers at Washington University in St. Louis (WashU) have established the first models of Zika virus transmission from a pregnant mouse to her fetus.
https://www.biyologlar.com/mouse-models-show-how-zika-infects-a-fetus-during-pregnancy -
Mouse models show how Zika infects a fetus during pregnancy
Researchers at Washington University in St. Louis (WashU) have established the first models of Zika virus transmission from a pregnant mouse to her fetus.
https://www.biyologlar.com/mouse-models-show-how-zika-infects-a-fetus-during-pregnancy -
Protein structure paves the way for new broad spectrum antifungals
This ribbon diagram shows two views of the structure of the enzyme Tps2 as it removes a phosphate from a sugar molecule (yellow, orange and red).
https://www.biyologlar.com/protein-structure-paves-the-way-for-new-broad-spectrum-antifungals -
A molecular alarm clock awakens resting ovules
Ovarian follicle of fruit fly, with chromosomes stained in green and dKDM5 protein stained in red.
https://www.biyologlar.com/a-molecular-alarm-clock-awakens-resting-ovules -
A molecular alarm clock awakens resting ovules
Ovarian follicle of fruit fly, with chromosomes stained in green and dKDM5 protein stained in red.
https://www.biyologlar.com/a-molecular-alarm-clock-awakens-resting-ovules -
Discovery shows how herpes simplex virus reactivates in neurons to trigger disease
When we get cold sores, the reason is likely related to stress. In particular, the neurons in which the herpes simplex virus (HSV) reside, are under stress. For the first time, researchers at the University of North Carolina School of Medicine discovered a cellular mechanism that allows the virus to reactivate. They also found how brain cells are duped into allowing bits of virus to escape the very repressive environment in neurons and cause disease. HSV is found in about 90 percent of the...
https://www.biyologlar.com/discovery-shows-how-herpes-simplex-virus-reactivates-in-neurons-to-trigger-disease -
Genetic regulation of the thymus function identified
A single thymic epithelial cell (red) in contact with developing T cells (white).
https://www.biyologlar.com/genetic-regulation-of-the-thymus-function-identified -
Genetic regulation of the thymus function identified
A single thymic epithelial cell (red) in contact with developing T cells (white).
https://www.biyologlar.com/genetic-regulation-of-the-thymus-function-identified -
The mysterious sexual life of the most primitive dragonfly
Hemiphlebia mirabilis is a rare species in every sense: it is the most primitive dragonfly known to man, it has unique reproductive behaviors and was believed to be extinct.
https://www.biyologlar.com/the-mysterious-sexual-life-of-the-most-primitive-dragonfly -
The mysterious sexual life of the most primitive dragonfly
Hemiphlebia mirabilis is a rare species in every sense: it is the most primitive dragonfly known to man, it has unique reproductive behaviors and was believed to be extinct.
https://www.biyologlar.com/the-mysterious-sexual-life-of-the-most-primitive-dragonfly -
Calcium channel blockers caught in the act at atomic level
Atomic resolution studies of two common calcium channel blockers, one that treats irregular heart beats, and another that controls high blood pressure and angina
https://www.biyologlar.com/calcium-channel-blockers-caught-in-the-act-at-atomic-level -
Calcium channel blockers caught in the act at atomic level
Atomic resolution studies of two common calcium channel blockers, one that treats irregular heart beats, and another that controls high blood pressure and angina
https://www.biyologlar.com/calcium-channel-blockers-caught-in-the-act-at-atomic-level -
Scientists uncover the way a common cell enzyme alerts the body to invading bacteria
Biomedical investigators at Cedars-Sinai have identified an enzyme found in all human cells that alerts the body to invading bacteria and jump-starts the immune system.
https://www.biyologlar.com/scientists-uncover-the-way-a-common-cell-enzyme-alerts-the-body-to-invading-bacteria -
Bacteria take 'RNA mug shots' of threatening viruses
Scientists from The University of Texas at Austin, the Stanford University School of Medicine and two other institutions have discovered that bacteria have a system that can recognize and disrupt dangerous
https://www.biyologlar.com/bacteria-take-rna-mug-shots-of-threatening-viruses -
Human kidney progenitors isolated, offering new clues to cell renewal
In a first-of-its-kind look at human kidney development, researchers at The Saban Research Institute of Children's Hospital Los Angeles have isolated human nephron progenitor (NP) cells.
https://www.biyologlar.com/human-kidney-progenitors-isolated-offering-new-clues-to-cell-renewal -
Researchers map Zika's routes to the developing fetus
Zika virus infects numerous primary cell types and explants of the human placenta, suggesting placental and paraplacental routes of virus transmission.
https://www.biyologlar.com/researchers-map-zikas-routes-to-the-developing-fetus -
Researchers map Zika's routes to the developing fetus
Zika virus infects numerous primary cell types and explants of the human placenta, suggesting placental and paraplacental routes of virus transmission.
https://www.biyologlar.com/researchers-map-zikas-routes-to-the-developing-fetus -
Watching a forest breathe
Flux towers are equipped with inlets for "sniffing the air " above the forest, in addition to other instruments such as sonic anemometers for measuring wind
https://www.biyologlar.com/watching-a-forest-breathe -
Watching a forest breathe
Flux towers are equipped with inlets for "sniffing the air " above the forest, in addition to other instruments such as sonic anemometers for measuring wind
https://www.biyologlar.com/watching-a-forest-breathe -
Genetic road map may bring about better cotton crops
A University of Texas at Austin scientist, working with an international research team, has developed the most precise sequence map yet of U.S.
https://www.biyologlar.com/genetic-road-map-may-bring-about-better-cotton-crops -
Ocean warming and acidification impact on calcareous phytoplankton
Coccolith morphology is shown as acidification and warming increases in the culture experiment.
https://www.biyologlar.com/ocean-warming-and-acidification-impact-on-calcareous-phytoplankton -
Ocean warming and acidification impact on calcareous phytoplankton
Coccolith morphology is shown as acidification and warming increases in the culture experiment.
https://www.biyologlar.com/ocean-warming-and-acidification-impact-on-calcareous-phytoplankton -
Panik Atak Öldürür Mü ?
Yoğun sıkıntı ya da korku nöbetleriyle gelen panik atak, günümüz insanının en büyük sağlık sorunlarından biri... Prof. Dr. Sedat Özkan: Duygu ve düşünceler birbirini tetikliyor ve panik başlıyor.Yoğun sıkıntı ya da korku nöbetleriyle gelen panik atak, günümüz insanının en büyük sağlık sorunlarından biri...Prof. Dr. Sedat Özkan: Duygu ve düşünceler birbirini tetikliyor ve panik başlıyor. İstanbul Üniversitesi İstanbul Tıp Fakültesi Psikiyatri...
https://www.biyologlar.com/panik-atak-oldurur-mu- -
DNA of bacteria crucial to ecosystem defies explanation
This image shows a colony of Trichodesmium.
https://www.biyologlar.com/dna-of-bacteria-crucial-to-ecosystem-defies-explanation -
Mouse antibodies pinpoint Zika's weak spots
This image shows the mapping of the three distinct Zika virus DIII epitopes onto the mature virion
https://www.biyologlar.com/mouse-antibodies-pinpoint-zikas-weak-spots -
Mouse antibodies pinpoint Zika's weak spots
This image shows the mapping of the three distinct Zika virus DIII epitopes onto the mature virion
https://www.biyologlar.com/mouse-antibodies-pinpoint-zikas-weak-spots -
Marine carbon sinking rates confirm importance of polar oceans
Results show that the transfer efficiency of organic carbon from the surface to the deep ocean
https://www.biyologlar.com/marine-carbon-sinking-rates-confirm-importance-of-polar-oceans -
Takıntı Tedavisine Gün Hastanesi Modeli
Halk arasında takıntı diye bilinen Obsesif Kompulsif Bozukluk, bulanık görmeden nefes darlığına kadar birçok soruna neden oluyor. Takıntıları nedeniyle işinde performansı düşen, eşiyle arası açılanlar bile var. OKB tedavisinde ilaç ve terapinin eş zamanlı bir arada uygulandığını vurgulayan Prof. Dr. Sedat Özkan, OKB hastalarının “Gün Hastanesi Modeli” kapsamında tedavi edildiğini vurgulayarak, “Bu uygulamada, klinikte uzman denetiminde yüzleştirme,...
https://www.biyologlar.com/takinti-tedavisine-gun-hastanesi-modeli -
New clues found to how 'cruise-ship' virus gets inside cells
Researchers at Washington University School of Medicine in St. Louis have identified the protein that norovirus -- shown here in a colored transmission electron micrograph -- uses to invade cells
https://www.biyologlar.com/new-clues-found-to-how-cruise-ship-virus-gets-inside-cells -
Arctic gives clues on worst mass extinction of life
96 percent of marine species, and 70 percent of terrestrial life died off in the Permian-Triassic extinction event, as geologists know it. It is also known as The Great Dying Event for obvious reasons.
https://www.biyologlar.com/arctic-gives-clues-on-worst-mass-extinction-of-life -
Sosyal Fobi Yalnızlaştırıyor
Sosyal fobi, toplum içinde konuşurken ya da herhangi bir eylem yaparken kızarma, terleme, ellerin titremesi, kendini küçük düşürecek yanlış bir şey yapma korkusu olarak tanımlanır. Kişi bu korkunun ve belirtilerinin topluluk içinde herkes tarafından fark edileceğinden de korkarak topluluğa girmekten çeşitli bahaneler bularak kaçınır ve strese girer. Kaçınma nedeniyle kişinin sosyal, mesleki yada aile yaşamı etkilenir. İstanbul Üniversitesi İstanbul Tıp...
https://www.biyologlar.com/sosyal-fobi-yalnizlastiriyor -
İndüklenmiş pluripotent kök hücreler
İnsan iPSC'lerinin hücre akıbetini kontrol etmek için kullanılan geniş bir hücre kültürü ortamı koleksiyonu, takviyeleri, biyoaktif küçük moleküller ve büyüme faktörleri sunuyoruz. Aşağıdaki tablo, insan iPSC'lerini farklı hücre soylarına ayırmak için kullanılan en yaygın şekilde kullanılan protokolleri, ortamları ve karakterizasyon antikorlarını vurgulamaktadır.
https://www.biyologlar.com/pluripotent-ozellik-nedir -
Urban hedgehogs -- more at home in the city than you thought
A species that is 15 million years old, hedgehogs have survived all kinds of environmental changes over the years, including urbanisation. Surprisingly, cities have often been found to have higher hedgehog populations than rural areas.
https://www.biyologlar.com/urban-hedgehogs-more-at-home-in-the-city-than-you-thought -
Urban hedgehogs -- more at home in the city than you thought
A species that is 15 million years old, hedgehogs have survived all kinds of environmental changes over the years, including urbanisation. Surprisingly, cities have often been found to have higher hedgehog populations than rural areas.
https://www.biyologlar.com/urban-hedgehogs-more-at-home-in-the-city-than-you-thought -
Octopus genome reveals cephalopod secrets
Researchers from UC Berkeley, the Okinawa Institute of Science and Technology Graduate University and the University of Chicago have sequenced and annotated the first cephalopod genome
https://www.biyologlar.com/octopus-genome-reveals-cephalopod-secrets -
First fossil facial tumor discovered in a dwarf duck-billed dinosaur from Transylvania
The first-ever record of a tumourous facial swelling found in a fossil has been discovered in the jaw of the dwarf dinosaur Telmatosaurus transsylvanicus, a type of primitive duck-billed dinosaur known as a hadrosaur.
https://www.biyologlar.com/first-fossil-facial-tumor-discovered-in-a-dwarf-duck-billed-dinosaur-from-transylvania -
Scientists sequence first ancient Irish human genomes
Excavated near Belfast in 1855, she had lain in a Neolithic tomb chamber for 5,000 years; subsequently curated in Queens University Belfast.
https://www.biyologlar.com/scientists-sequence-first-ancient-irish-human-genomes -
Scientists sequence first ancient Irish human genomes
Excavated near Belfast in 1855, she had lain in a Neolithic tomb chamber for 5,000 years; subsequently curated in Queens University Belfast.
https://www.biyologlar.com/scientists-sequence-first-ancient-irish-human-genomes -
Sıtma parazitlerine karşı vektörün hassasiyeti
Anopheles türlerinin sıtma parazitlerine karşı hassasiyeti genetik olarak belirlenmiştir. P. vivax, P.falciparum ve P. malariae , A. maculipennis aracılığı ile taşınabilmektedir (Barber and Rice, 1935) A. sacharovi, P. falciparum 'un Avrupa soyuna karşı oldukça hassas iken, bu türün tropikal soylarını taşıyamamaktadır. Ayrıca, Afrika kökenli parazitlere de hassas değildir. A. sacharovi ve A, superpictus Türkiye'de P. vivax taşımaktadırlar (Kasap, 1990). Bu tür Batı...
https://www.biyologlar.com/sitma-parazitlerine-karsi-vektorun-hassasiyeti -
Messaging by flow in the brain
We have all bumped our heads at some point, and such incidents are usually harmless.
https://www.biyologlar.com/messaging-by-flow-in-the-brain -
Duplicate DNA a hallmark of tick genome
Researchers sequence the genome of the Lyme-disease-causing tick and find lots of duplicative elements.
https://www.biyologlar.com/duplicate-dna-a-hallmark-of-tick-genome -
Duplicate DNA a hallmark of tick genome
Researchers sequence the genome of the Lyme-disease-causing tick and find lots of duplicative elements.
https://www.biyologlar.com/duplicate-dna-a-hallmark-of-tick-genome -
Genome of bed bug decoded
These bloodsuckers originally parasitized bats.
https://www.biyologlar.com/genome-of-bed-bug-decoded -
Genome of bed bug decoded
These bloodsuckers originally parasitized bats.
https://www.biyologlar.com/genome-of-bed-bug-decoded -
'Big data' drills down into metabolic details
The same metabolic pathway can produce different results in different bodily tissues. A Rice University algorithm is designed to find those differences.
https://www.biyologlar.com/big-data-drills-down-into-metabolic-details