Breaking News:
  • Registrati

Scienzaonline

Home

A New Role for Autophagosomes in Neurodegeneration

E-mail Stampa

Figures: Neurodegenerative changes in the brains of mice with a missing adapter to bind the autophagosome motor; therefore, the autophagosomes are unable to transport BDNF. Left: Sections of a wild type mouse (WT) cortex and a knockout mouse (KO) cortex; Right: Enlarged depiction of the images on the left showing obvious neurodegeneration (arrows) in the brain of the knockout mouse. Picture: FMP


Autophagosomes are at the center of attention, at least since the Nobel Prize for Medicine was awarded for research on autophagy in 2016. The much talked about autophagosomes are small membrane vesicles in charge of waste disposal to promote recycling of its components. Scientists of the Leibniz-Institut für Molekulare Pharmakologie (FMP) in Berlin and the CECAD Research Center in Cologne who work on degradation and recycling processes in cells,  recently made a striking discovery: They found that autophagosomes transport growth signals such as brain-derived neurotrophic factor (BDNF) along axons (long slender nerve cell projections) to the cell body. This signaling process enables survival of nerve cells and stimulates the formation of new branched neurites that allow neurons to interconnect. Nerve cells in the brain will die if the autophagosomal taxis cease to operate. The new discovery shows autophagosomes in a completely new light and fuels hope for new treatments for Alzheimer's disease and other neurodegenerative diseases. The results of this research were just published in the renowned science journal 'Nature Communications'*.

 

Crete’s Late Minoan tombs points way to early European migration

E-mail Stampa

Dr Ceiridwen Edwards

 

Archaeogenetic researcher Dr Ceiridwen Edwards will compare ancient DNA samples from one of one of Europe’s earliest civilisations with contemporary Cretans

 

RESEARCHERS at the University of Huddersfield have visited Rethymnon in Crete, to collect samples from the late Bronze Age Necropolis of Armenoi, one of the world’s finest archaeological sites.  DNA analysis of the ancient skeletal remains could provide fresh insights into the origins of European civilisation.  Dr Ceiridwen Edwards and PhD student George Foody were permitted to take bone samples and teeth from over 110 of the more than 600 skeletons discovered in the Necropolis, a rock-hewn burial site from the Late Minoan period dating to more than 4,000 years ago.  During their two-week visit, the Huddersfield researchers – part of a team that included colleagues from Oxford University and the Hellenic Archaeological Research Foundation – also took DNA swabs from more than 100 contemporary Cretans.  They sought people whose grandmothers were from Crete in order to analyse links to the Minoan period.

 

Two new species of orchids discovered in Okinawa

E-mail Stampa

Gastrodia okinawensis


Two new species of parasitic plants have been discovered on the main island of Okinawa, Japan. The discovery was made by Project Associate Professor SUETSUGU Kenji (Kobe University Graduate School of Science), who named them Gastrodia nipponicoides and Gastrodia okinawensis. Details of these findings were published online in Phytotaxa on April 7th. Plants’ ability to photosynthesize is often taken as one of their defining features. However, some species choose instead to live a parasitic existence, attaching to the hyphae of fungi and exploiting them for nutrients. These plants are known as mycoheterotrophs. Since they don’t engage in photosynthesis, they only appear above ground during the brief period when they are in fruit or flowering. In addition, many of the species are small, making them very hard to find. Even in Japan, one of the most advanced countries in the world in documenting its flora, many mycoheterotrophs remain unclassified. Professor Suetsugu is one of those involved in documenting their distribution and classification.

 

It's the thought that counts: the neuro-anatomical basis of forgiveness revealed

E-mail Stampa

A sports person who has accidentally caused serious injury to a rival. A distracted driver who has caused an accident. Or a colleague who has involuntarily made a very serious error. Even outside the court room we have all been in situations in which we have had to express judgements on specific events on the basis of the seriousness of the incident but also on the intentions of those who caused them. New research by Trieste’s SISSA, published in the Scientific Reports journal, has studied the areas of the brain involved in processes which prompt us to forgive those who have seriously, but unintentionally, messed up. Researchers specifically examined the role of a part of the brain, called anterior superior temporal sulcus (aSTS), and discovered that the larger the amount of grey matter in this patch of cortex, the more likely we are to forgive those who have made a serious mistake by accident.

 

Scientists uncover isotopic fingerprint of N2O emissions from Arctic tundra

E-mail Stampa

“Bare peat surfaces in the discontinuous permafrost zone of the sub-Arctic East European tundra. New research explores the source of unexpectedly high nitrous oxide emissions from such bare peat soils in Arctic tundra." Photo credit: University of Eastern Finland Biogeochemistry Research Group

 

A new study from the University of Eastern Finland presents, for the first time, the isotopic fingerprint of nitrous oxide produced by Arctic soils. The finding opens new avenues for predicting future trends in atmospheric nitrous oxide as well as in identifying climate change mitigation actions in the Arctic, a region that is particularly sensitive to climate change. Nitrous oxide (N2O) is a powerful greenhouse gas and also the second largest contributor to ozone depletion in the stratosphere. It is produced naturally by soils, with agricultural and tropical rain forest soils being the main sources of N2O to the atmosphere. Until recently, scientists assumed that nitrous oxide emissions were negligible in colder climate regions like the Arctic and sub-Arctic.

 

Many Older Adults Will Need Help with Managing their Medicines and Money

E-mail Stampa

In a study of nearly 9500 individuals aged 65 and older who did not need help in managing medications or finances, many needed assistance as time went on. Over 10 years, 10.3% of those aged 65 to 69 needed help managing medications and 23.1% needed help managing finances. These rates rose with age, to 38..2% and 69%, respectively, in those over age 85. Women had a higher risk than men, especially with advancing age. Additional factors linked with an increased risk for both outcomes included a history of stroke, low cognitive functioning, and difficulty with activities of daily living.

 

First field trials with the low impact OnTrack forwarder

E-mail Stampa

OnTrack_vibration_test

Forest harvesting necessitates heavy terrain-transport of timber. This entails risk of rutting and soil compaction. Therefore, sensitive soils have traditionally been logged in winter, on frozen ground. But with ever milder winters and higher standards of environmental performance, forestry needs a low impact forwarder that can economically transport the wood to the nearest road with little risk of damage to the forest floor. The PRINOTH track technology has been successfully adapted and installed into a PONSSE Buffalo forwarder chassis. The machine is now undergoing the initial tests in Sweden. This concept machine is an important platform for refining the tracked forwarder concept. The initial test indicates that the machine combines low ground pressure and low vibration levels, with excellent off-road capabilities.

 

New study reveals how some chickens got striped feathers

E-mail Stampa

Coucou de Rennes, a French breed with the characteristic sex-linked barring phenotype. Photo Hervé Ronné, Ecomusée du pays de Rennes.

 

Birds show an amazing diversity in plumage colour and patterning. But what are the genetic mechanisms creating such patterns? In a new study published in PLOS Genetics, Swedish and French researchers report that two independent mutations are required to explain the development of the sex-linked barring pattern in chicken. Both mutations affect the function of CDKN2A, a tumour suppressor gene associated with melanoma in humans. Research in pigmentation biology has made major advances the last 20 years in identifying genes controlling variation in pigmentation in mammals and birds. However, the most challenging question is still how colour patterns are genetically controlled. Birds are outstanding as regards the diversity and complexity in colour patterning. The study published today has revealed the genetic basis for the striped feather characteristic of sex-linked barring. One example of this fascinating plumage colour is the French breed Coucou de Rennes. The name refers to the fact that this plumage colour resembles the barring patterns present in the common cuckoo (Cuculus canorus). The sex-linked barring locus is on the Z chromosome. (In chickens as well as in other birds the male has chromosomes ZZ while females have ZW).

 

Archaeogenetic findings unlock ancestral origins of Sardinians

E-mail Stampa

Maria Pala's findings unlock ancestral origins of Sardinians

The University of Huddersfield’s Sardinian researcher Dr Maria Pala investigates the origins of her homeland ancestors 8,000 years ago THE island of Sardinia is remarkable for the fact that an exceptionally high proportion of the population is seemingly descended from people who have occupied it since the Neolithic and Bronze Age, between 8,000 and 2,000 years ago. For centuries after that, they had little interaction with mainland Europe. Now, University of Huddersfield researcher Dr Maria Pala has taken part in a project that has helped to unlock the genetic secrets of her Mediterranean homeland. One of the findings is that some modern Sardinians could have evolved from people who colonised the island at an even earlier period, the Mesolithic. Dr Pala - whose first degree was from the University of Sassari in her native Sardinia – is a Senior Lecturer at the University of Huddersfield and a member of its Archaeogenetics Research Group. The group is led by Professor Martin Richards and includes Dr Francesca Gandini as Research Fellow.

 

TECNOLOGIA

Radar satellitari e Gps...

Stazione Gps della rete Ring di Mormanno (Cosenza) Evidenziata per la prima volta in Italia, nella zona del Pollino, la presenza di movimenti lenti di faglia durante le sequenze di terremoti di bassa magnitudo che contribuiscono a spiegare perché, rispetto al resto dell’Appennino, in...

VISITA LA NOSTRA PAGINA FACEBOOK

LAVORI IN CORSO

LAVORI IN CORSO - Nuovo sistema di gestione in collaudo
VI PREGHIAMO DI SCUSARCI PER I DISAGI
STIAMO IMPORTANDO IL DATABASE DI
TUTTI GLI ARTICOLI DI SCIENZAONLINE
DAL 2003 AD OGGI

SCIENZAONLINE.COM

  • Ultime News
  • News + lette
Il Grafene, il nano-materiale che migliorerà la nostra vita

Il Grafene, il nano-materiale che...

2010-11-23 00:00:00

Musicolor

Musicolor

2009-02-18 00:00:00

I Della Robbia e la storia della terracotta invetriata

I Della Robbia e la storia della...

2009-03-18 00:00:00

Giovanni Papi - Prata Caelestia

Giovanni Papi - Prata Caelestia

2009-11-17 00:00:00

Statistiche

Tot. visite contenuti : 23107541

Autorizzazioni

 

Scienzaonline con sottotitolo Sciencenew 
Periodico
Autorizzazioni del Tribunale di Roma – diffusioni:
telematica quotidiana 229/2006 del 08/06/2006
mensile per mezzo stampa 293/2003 del 07/07/2003
Pubblicato a Roma – Via A. De Viti de Marco, 50 – Direttore Responsabile Guido Donati

 

Hot Topic

Ultimi Commenti

Chi è Online

 175 visitatori online

X

.

Pubblica il tuo Articolo

Hai scritto un Articolo scientifico? Inviaci il tuo articolo, verrà valutato e pubblicato se ritenuto valido! Fai conoscere la tua ricerca su Scienzaonline.com!

Ogni mese la nostra rivista è letta da + di 50'000 persone

Information

Information

Ultime News

Ionosfera col segno meno

Ionosfera col segno meno

2017-04-19 07:28:04

Segnali, scelte e conflitti: il cervello li sbroglia con attenzione

Segnali, scelte e conflitti: il...

2017-05-05 15:40:28

Orbita a rischio febbre

Orbita a rischio febbre

2017-04-21 12:00:00

Scoperto nuovo gene per sclerosi multipla e Lupus

Scoperto nuovo gene per sclerosi...

2017-04-28 12:58:54

Redazione

Contatta la Redazione di Scienzaonline.com per informazioni riguardanti la rivista
Pagina Contatti

Questo sito utilizza cookie per implementare la tua navigazione e inviarti pubblicità e servizi in linea con le tue preferenze. Chiudendo questo banner, scorrendo questa pagina o cliccando qualunque suo elemento acconsenti all'uso dei cookie. To find out more about the cookies we use and how to delete them, see our privacy policy.

I accept cookies from this site.

EU Cookie Directive Module Information