Tag Archive for 'Human'

Fluorescence microscopy image of cell-free mitochondria in the plasma of a healthy individual. Image credit: Dache et al, doi: 10.1096/fj.201901917RR.

Scientists Find Cell-Free Mitochondria in Human Blood

Jan 24, 2020 by Enrico de Lazaro

Mitochondria are considered as the power-generating units of the cell due to their key role in energy metabolism and intercellular communication. However,...

Protsiv et al determined that average human body temperature in the United States has decreased since the 1800s. Image credit: Vicki4net.

Study: Average Human Body Temperature in U.S. Has Decreased Since 1800s

Jan 16, 2020 by News Staff

Scientists at the Stanford University School of Medicine have found that men born in the United States in the early 19th century had temperatures 0.59...

Winterdahl et al investigated the effects of sucrose using positron-emission tomography (PET) imaging with [11C]carfentanil (μ-opioid receptor agonist) and [11C]raclopride (dopamine D2/3 receptor antagonist) in seven female anesthetized Göttingen minipigs. Image credit: Winterdahl et al, doi: 10.1038/s41598-019-53430-9.

Sugar Changes Brain Chemistry, New Animal Study Shows

Jan 15, 2020 by News Staff

Foods high in sucrose, or table sugar, influence brain reward circuitry in ways similar to those observed when addictive drugs are consumed, according...

Cowen et al mapped 13 key emotions triggered when we listen to music. Image credit: Cowen et al, doi: 10.1073/pnas.1910704117.

Music Triggers 13 Key Emotions, Says New Study

Jan 13, 2020 by News Staff

In a study published in the Proceedings of the National Academy of Sciences, an international team of researchers examined the feelings evoked by 2,168...

Tea consumption is associated with reduced risks of atherosclerotic cardiovascular disease and all-cause mortality, especially among those consistent habitual tea drinkers. Image credit: Sci-News.com.

Habitual Tea Drinking Reduces Risk of Cardiovascular Disease

Jan 10, 2020 by Enrico de Lazaro

Using large prospective cohorts among Chinese adults, a research team led by the Chinese Academy of Medical Sciences and Peking Union Medical College has...

Phylogeny of negative strand RNA viruses: red dots identify virus orders according to current taxonomy; blue clouds show virus families; selected viral species are identified for orientation. Image credit: Käfer et al, doi: 10.1371/journal.ppat.1008224.

Scientists Discover Hundreds of New RNA Viruses in Insects

Jan 9, 2020 by News Staff

A team of researchers has discovered several hundreds of new negative strand RNA viruses and at least 20 viral genera in insects. Phylogeny of negative...

TEM image of double-layered M2e-NA nanoparticles. Scale bar - 500 nm. Image credit: Wang et al, doi: 10.1002/adhm.201901176.

New Nanoparticle Vaccine Protects Mice from Six Influenza Strains

Jan 9, 2020 by News Staff

The new double-layered nanoparticles vaccine, developed by researchers from the Center for Inflammation, Immunity & Infection at the Georgia State...

Border Cave perched on a cliff in the Lebombo Mountains. Image credit: Ashley Kruger.

Stone Age Humans Roasted Root Vegetables 170,000 Years Ago

Jan 9, 2020 by Enrico de Lazaro

Archaeologists have unearthed 170,000-year-old whole, charred rhizomes of flowering plants from the genus Hypoxis in a cave in southern Africa. These botanical...

Lingonberry (Vaccinium vitis-idaea) possesses anti-inflammatory properties, which may well contribute to its ability to reduce blood pressure and improve vascular function. Image credit: Jonas Bergsten.

Lingonberry Juice Consumption Reduces Blood Pressure and Improves Vascular Function: Study

Jan 8, 2020 by News Staff

Long-term treatment with lingonberry (Vaccinium vitis-idaea) juice lowered the already elevated blood pressure and improved the function of blood vessels...

Wittfeld et al support the hypothesis that higher cardiorespiratory fitness is associated with larger brain volumes in several brain regions that are not primarily connected to motor-related functions. Image credit: Mabel Amber.

Study: Cardiorespiratory Exercise Improves Brain Health, Decelerates Decline in Gray Matter

Jan 3, 2020 by News Staff

A new study, published in the Mayo Clinic Proceedings, provides evidence of an association between cardiorespiratory fitness — which refers to the...

Beta-carophyllene, a compound included in essential oils, improves the healing process in mice when it is topically applied to a skin wound. Image credit: Marina Pershina.

Bioactive Compound in Essential Oils Enhances Wound Healing: Study

Dec 31, 2019 by Enrico de Lazaro

Beta-carophyllene, a bicyclic sesquiterpene found in lavender, rosemary and ylang ylang, as well as various herbs and spices, has the capability to improve...

Green Tea Polyphenol Active against Tuberculosis Bacteria

Dec 30, 2019 by Enrico de Lazaro

Epigallocatechin gallate (EGCG), one of the principle polyphenolic compounds found in the leaves of the green tea plant (Camellia sinensis), is effective...

Changes in the spectral content of ambient light are detectable to most mammals as a blue shift in the color of twilight. Mouland et al show that these blue colors suppress circadian responses to light, supporting robust circadian entrainment when environmental conditions render light intensity a weak or unreliable indicator of time of day. Image credit: Johannes Plenio.

Blue Light is Less Disruptive to Sleep than Previously Thought

Dec 25, 2019 by News Staff

Using dim, cooler lights in the evening and warmer lights in the day may be more beneficial to our health, according to a new study in mice from University...

Märtin et al define the molecular identity of striatal projections neurons, focusing on the characterization of the patch and matrix compartments; genetic labeling of mu opioid receptor (Oprm1)-expressing neurons reveals the identity of neuron subtypes, and also establishes spatial markers for the identification of subregions in striatum. Image credit: Märtin et al, doi: 10.1016/j.celrep.2019.11.096.

Scientists Create Molecular Map of Striatum

Dec 24, 2019 by News Staff

Striatum, the inner part of the brain, is considered central to decision-making and the development of various addictions. In mouse models and with methods...

Conventional ultrasound verifies soft- and hard-tissue features detected in laser ultrasound (LUS) imaging on the forearm: (a) single time trace from LUS imaging of a volunteer’s forearm; (b) photograph of a volunteer’s forearm region, imaged using LUS and conventional ultrasound; a green tracking laser from the LDV is also visible; (c) reconstructed LUS image of a volunteer’s forearm with multiple visible tissue layers; (d) matching conventional ultrasound image of the volunteer’s forearm using a GE Logiq E9 system and a 9 MHz linear probe confirming features detected in the LUS image. Image credit: Zhang et al, doi: 10.1038/s41377-019-0229-8.

Novel Laser Ultrasound Technique Doesn’t Require Contact with Patient’s Body

Dec 24, 2019 by News Staff

The noncontact laser ultrasound technique, developed by a team of MIT engineers, leverages an eye- and skin-safe laser system to remotely image the inside...

Verigin et al found that self-reported good liars (i) may be responsible for a disproportionate amount of lies in daily life, (ii) tend to tell inconsequential lies, mostly to colleagues and friends, and generally via face-to-face interactions, and (iii) highly rely on verbal strategies of deception, most commonly reporting to embed their lies into truthful information, and to keep the statement clear, simple and plausible. Image credit: Ryan McGuire.

New Study Identifies Key Characteristics of Expert Liars

Dec 23, 2019 by News Staff

According to a new study published in the journal PLoS ONE, good liars lean towards telling inconsequential lies, mostly to colleagues and friends, and...

This is an artist's reconstruction of Homo erectus. Image credit: Yale University.

Last Population of Homo erectus Survived in Central Java until 108,000 Years Ago

Dec 20, 2019 by News Staff

An international team of researchers has pinpointed the first comprehensive age for the last known occurrence of the early hominin species Homo erectus. This...

Earth’s technosphere now weighs some 30 trillion tons -- a mass of more than 50 kg for every sq.m of the planet’s surface, according to Jan Zalasiewicz et al.

Humans and Domestic Animals Will Dominate Anthropocene-Era Fossil Record, Paleontologists Say

Dec 19, 2019 by News Staff

The terrestrial fossil record of the current geological epoch, the Anthropocene, will be unique in Earth history and will be dominated by humans, cows,...

An enteroendocrine cell (green) lies within the epithelium (red) that lines the intestines of a zebrafish larvae. Image credit: Lihua Ye.

Study: High-Fat Meal Can Silence Communication between Intestine and Rest of the Body

Dec 18, 2019 by News Staff

According to a new study performed in zebrafish (Danio rerio), a high-fat meal can shut down the communication between the enteroendocrine cells —...

Woolly mammoths (Mammuthus primigenius). Image credit: Velizar Simeonovski / Field Museum.

DNA-Based ‘Clock’ Predicts Maximum Lifespan in Living and Extinct Vertebrates

Dec 15, 2019 by News Staff

A team of researchers at the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia, has developed a simple new method for estimating...

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