Navigation Links
Movement without muscles
Date:5/12/2011

This release is available in German.

All animals move cheetahs faster, snails more slowly. Muscle contractions are the basis of all movements, at least according to general opinion. But there are animal groups, that don't have any muscles at all, as they branched off from the evolutionary path before muscle cells evolved. However these animal groups, for instance the sea sponges, are not immovable. Sponges are able to contract without muscles. These contractions were already known to sponge divers in ancient Greece, as Aristotele described in 350 BC.

A group of scientists headed by associate professor Dr. Michael Nickel of Friedrich Schiller University Jena (Germany) is looking into movement without muscles. The scientists from the Institute of Systematic Zoology and Evolutionary Biology are mostly interested in the evolutionary aspect, especially in the question: Which evolutionary forerunners did the muscle cells derive from?

In a new study which will be published in the Journal of Experimental Biology (Band 214, doi: 10.1242/jeb.049148) on 15 May 2011, the evolutionary biologists are giving new answers to the question: Which cells in the sponges are contracting? In this paper the researchers are relying on the 3dimensional (3D) images, which they created with synchrotron radiation-based X-ray microtomography. Thus, the Jena scientists in co-operation with the Helmholtz-Zentrum Gesthacht at the Deutsches Elektronen Synchrotron Hamburg could compare and visualise the 3D structure of contracted and expanded sponges.

"A key feature of our approach is the use of 3D data for measuring the volume and surface of our sponges," says Nickel. "Although the 3D volumetric analysis is widely known and used in the technical sciences, it has rarely been used in zoology in spite of its enormous information potential." Thus, Nickel's team was able t
'/>"/>

Contact: Axel Burchardt
presse@uni-jena.de
49-364-193-1031
Friedrich-Schiller-Universitaet Jena
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Paleozoic sediment curve provides new tool for tracking sea-floor sediment movements
2. Scientists identify a molecule that coordinates the movement of cells
3. Metastatic movements in 3-D
4. Genetic evidence for avian influenza movement from Asia to North America via wild birds
5. Cell movements totally modular, Stanford study shows
6. New movement models tested at the Smithsonian in Panama
7. Caltech researchers get first look at how groups of cells coordinate their movements
8. Effects of maternal exercise on fetal breathing movements
9. Effects of maternal exercise on fetal breathing movements
10. Resilin springs simplify the control of crustacean limb movements
11. Protein regulates movement of mitochondria in brain cells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Movement without muscles
(Date:4/17/2014)... new early-warning signs of the potential loss of sight ... for the diagnosis and treatment of diabetic retinopathy, potentially ... "We had not expected to see such striking changes ... Elsner, professor and associate dean in the IU School ... set out to study the early signs, in volunteer ...
(Date:4/17/2014)... University of Texas Medical Branch at Galveston are ... with radiation for cervical cancer should begin colorectal ... The UTMB researchers, finding a high incidence of ... with radiation, offer new recommendations that the younger ... about eight years after their initial cervical cancer ...
(Date:4/17/2014)... way the immune system may fight cancers and viral ... cells to treat illness. , The research, in mice, ... "neighborhood police" specialized squads of defenders that patrol ... entire city, the body. , Scientists at Washington University ... the liver, skin and uterus each has dedicated immune ...
Breaking Biology News(10 mins):New technique detects microscopic diabetes-related eye damage 2New technique detects microscopic diabetes-related eye damage 3Radiation therapy for cervical cancer increases risk for colorectal cancer 2Some immune cells defend only 1 organ 2
... are invading the Great Lakes and changing the ecology of ... the March issue of the Journal of Great Lakes Research ... species, their ability to wrest territory from native fish plays ... , In the study, McMaster's Sigal Balshine, an assistant professor ...
... University's Pratt School of Engineering have created a new ... the probe creates a picture of the whole heart ... to image a single heart cross section. , The ... the condition of the heart, but also for use ...
... the brain and, more specifically, how nerve cells form billions of ... a scientific mystery. , A team headed by Drs. Robin Hiesinger ... have unraveled a piece of that puzzle by finding a gene ... their work appears today in the journal Neuron. , "We were ...
Cached Biology News:Duke engineers develop new 3-D cardiac imaging probe 2
(Date:1/15/2014)... Pittsburgh, PA (PRWEB) January 15, 2014 The ... Company, publisher of Food Safety Tech , an e-Journal ... has signed an agreement for the second year for the ... with Pittcon 2014. The partnership provides that the registration fee ...
(Date:1/15/2014)... Cynvenio, a cancer diagnostics company focused on ... of tumor cells in the bloodstream, today announced that ... support application powered by CollabRx, Inc. , Available ... Therapy Finder will provide breast cancer patients and their ...
(Date:1/15/2014)... 2014 This webinar will focus on ... safety assessment in biosimilars. , Regulatory frameworks are evolving ... development, however the complex nature of biopharmaceuticals makes the ... efficacy extremely challenging. Based on the specific aspects of ...
(Date:1/15/2014)... Reston, VA (PRWEB) January 15, 2014 ... education have continued their sponsorship of an annual competition ... interest in, and access to, innovative STEM study. The ... , TEAMS: Tests of Engineering Aptitude, Mathematics, and ...
Breaking Biology Technology:Pittcon Announces Second Year Partnership With Food Safety Tech 2Pittcon Announces Second Year Partnership With Food Safety Tech 3Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5
... , , , ... MITI ) ("Micromet" or the "Company"), a biopharmaceutical company ... inflammation and autoimmune diseases, today announced the closing of ... common stock. Micromet also announced that the underwriters ...
... SHANGHAI, Aug. 4 /PRNewswire-Asia/ -- ... ShangPharma Corporation, announced,today that it has moved its drug ... ChemPartner will provide fully integrated,services in the areas of ... Members of the joint project team from both sides ...
... Nile Therapeutics, Inc. (Nasdaq: NLTX ), a company ... today announced dosing of its first patient in a Phase 2 ... acute heart failure. , , The single-blind, placebo-controlled ... safety and tolerability of CD-NP when infused for up to 72 ...
Cached Biology Technology:Micromet Closes $80.5 Million Public Offering of Common Stock 2Micromet Closes $80.5 Million Public Offering of Common Stock 3Micromet Closes $80.5 Million Public Offering of Common Stock 4Shanghai ChemPartner and ELARA Pharmaceuticals Expand Drug Discovery Collaboration to a New Level 2Nile Therapeutics, Inc. Announces Dosing of First Patient in Phase 2 Study of CD-NP for the Treatment of Acute Heart Failure 2Nile Therapeutics, Inc. Announces Dosing of First Patient in Phase 2 Study of CD-NP for the Treatment of Acute Heart Failure 3
Screening test for the detection of Salmonella sp. by means of DNA amplification, subsequent molecular hybridization and detection on a microtitre plate....
... General description: The "egg crate" style ... any Costar flat bottom strips. Linkage: This ... created to easily match Cornings product number. ... under the old Sigma-Aldrich number (Z71,456-9) or ...
... This reagent is intended for use as ... MTF). Michels Transport Fluid is useful for ... lymph nodes) for immunofluorescence studies. Samples may ... days at room temperature. Michels Transport Fluid ...
... Two sizes available for use with 96- or 384-well ... 96 for ease of location on 96-tube plates ... the skirt of the plate* Efficient sealing is ... in conjunction with screw or clip-down hot lid thermal ...
Biology Products: