scholarly journals Erythrocyte Aging: A More than Superficial Resemblance to Apoptosis?

2005 ◽  
Vol 16 (1-3) ◽  
pp. 1-8 ◽  
Author(s):  
Giel Bosman ◽  
Frans Willekens ◽  
Jan Werre
Keyword(s):  
Superficial Resemblance ◽  
Erythrocyte Aging

scholarly journals III. On the coalescence of amœboid cells into plasmodia, and on the so-called coagulation of invertebrate fluids

1880 ◽  
Vol 30 (200-205) ◽  
pp. 252-255 ◽  
Keyword(s):  
Cover Glass ◽  
Superficial Resemblance ◽  
Glass Cell ◽  
Amoeboid Cells

Whether one collects the perivisceral fluid of a sea-urehin or of a worm, or the blood of a crustacean or a mollusc, the same phenomenon is always more or less distinctly to be observed. A kind of coagulation takes place, the fluid separating sooner or later into two portions, which have considerable superficial resemblance to the clot and serum of vertebrate blood. It is easy to watch the formation of the clot by placing a drop of fresh-drawn fluid upon a cover-glass and inverting this above a glass cell, of which the edge is oiled to prevent evaporation. The drop thus hangs freely and the coagulation can go on without interference.

23.—Psalixochlaena berwickense sp. nov., a Lower Carboniferous Fern from Berwickshire

1976 ◽  
Vol 69 (23) ◽  
pp. 513-521 ◽  
Author(s):  
Albert G. Long
Keyword(s):  
Lower Carboniferous ◽  
Superficial Resemblance

SynopsisPsalixochlaena berwickense sp. nov. is described from specimens found in the Cementstone Group of Berwickshire. The incomplete fossils consist of short cylindrical stems, 0·7–1·5 mm diameter, and probably represent portions of one or more branching rhizomes. Attached petioles have not been seen but one detached fragment shows a resemblance in structure to the petioles of P. cylindrica (Williamson) Holden. Branching of the stem is by trifurcate laterals and this distinguishes it from P. cylindrica but bears a superficial resemblance to Rowleya trifurcata Long.

Human Erythrocyte Aging: Cellular and Molecular Biology

1991 ◽  
Vol 5 (3) ◽  
pp. 173-195 ◽  
Author(s):  
Marguerite M.B. Kay ◽  
John J. Marchalonis ◽  
Samuel F. Schluter ◽  
Gieljan Bosman
Keyword(s):  
Molecular Biology ◽  
Human Erythrocyte ◽  
Erythrocyte Aging

The proteome of erythrocyte-derived microparticles from plasma: new clues for erythrocyte aging and vesiculation

2012 ◽  
Vol 76 ◽  
pp. 203-210 ◽  
Author(s):  
Giel J.C.G.M. Bosman ◽  
Edwin Lasonder ◽  
Yvonne A.M. Groenen-Döpp ◽  
Frans L.A. Willekens ◽  
Jan M. Werre
Keyword(s):  
Erythrocyte Aging

New Models for Motor Control

1989 ◽  
Vol 1 (2) ◽  
pp. 173-183 ◽  
Author(s):  
Jennifer S. Altman ◽  
Jenny Kien
Keyword(s):  
Distributed Control ◽  
Hierarchical Control ◽  
Sensory Information ◽  
Striking Similarity ◽  
Maximum Efficiency ◽  
Behavioral Choice ◽  
Modular Control ◽  
Superficial Resemblance ◽  
Different Levels ◽  
Command Center

What do a prototype robot (Brooks 1989) and a model for the control of behavioral choice in insects (Altman and Kien 1987a) have in common? And what do they share with a scratching cat (Shadmehr 1989)? The answer is distributed control systems that do not depend on a central command center for the execution of behavioral outputs. The first two in particular are examples of a growing trend to replace the long-held concept of linear hierarchical control of motor output with one of decentralized, distributed control, with inputs at many levels and the output a consensus of the activity in several centers. Brooks (1989) describes a six-legged machine that, in its most advanced form, can walk over rough terrain and prowl around following a source of warmth, such as a person. The six legs, chosen as a compromise between stability and ease of coordination, give the robot a superficial resemblance to an insect — but the similarity goes deeper. The modular control system, designed strictly on engineering principles for maximum efficiency and economy, bears a striking similarity to the model we have proposed elsewhere (Altman and Kien 1987a) to describe the organization of the motor system in insects such as the locust. In both systems, the same set of components can generate different behaviors, depending on the context, and similar principles govern the generation of different levels of behavior, from movements of a single leg to coordinated responses of the whole beast. Neither requires a single center for integrating all sensory information and conflicts tend to be resolved by consensus at the motor level.

XV.—The Digestive Diverticula in the Lamellibranchs

1926 ◽  
Vol 54 (3) ◽  
pp. 703-718 ◽  
Author(s):  
C. M. Yonge
Keyword(s):  
Digestive Gland ◽  
Structure And Function ◽  
Superficial Resemblance ◽  
The Subject ◽  
And Function

Because of the superficial resemblance of the digestive diverticula of the Lamellibranchs, and of many other Invertebrates, to the liver of the Vertebrates, and the discovery in them of glycogen by Bernard (1855), they became known as the “liver.” Weber (1880) later introduced the name hepatopancreas as a result of his discovery of the secretory powers of the diverticula in the Crustacea. In spite of the fact that none of the constituents of bile has ever been discovered in the Invertebrates, and that the digestive diverticula are in no way analogous to the liver of the Vertebrates, as Jordan (1912) has shown in his review of the subject, the terms “liver” and “hepatopancreas,” as well as the less questionable designation “digestive gland,” are still generally used. Moreover, no attempt is made to distinguish between these organs in the different groups of Invertebrates although both their structure and function in, for example, the Lamellibranchs, Gastropods, Cephalopods, and Crustacea are totally different. In some cases they constitute a digestive gland; in others, including the Lamellibranchs, as I hope to show in this paper, their function is that of assimilation, and so they are most suitably designated digestive diverticula.

scholarly journals Redescription of Cyclestheria hislopi (Baird, 1859) (Crustacea: Branchiopoda: Diplostraca: Cyclestherida) from Chennai, Tamil Nadu

Our Nature ◽  
2013 ◽  
Vol 10 (1) ◽  
pp. 281-283
Author(s):  
R. Sonia ◽  
R. Ramanibai ◽  
S. Kanniga
Keyword(s):  
Tamil Nadu ◽  
Adductor Muscle ◽  
Unique Character ◽  
Superficial Resemblance

Conchostracans are commonly known as “Clam Shrimps” because their superficial resemblance with that of bivalved molluscs. There are five families established under this group and their ineterrelationships to each other are unclear until today. All of them possess a bivalved carapace with two valves joined by a strong adductor muscle. Reduced abdomen and their ability to be completely enclosed within a bivalved carapace is the key and unique character which isolate this group from other anostracans and notostracans.DOI: http://dx.doi.org/10.3126/on.v10i1.7797

scholarly journals Structure and DNA binding of alkylation response protein AidB

2008 ◽  
Vol 105 (40) ◽  
pp. 15299-15304 ◽  
Author(s):  
Timothy Bowles ◽  
Audrey H. Metz ◽  
Jami O'Quin ◽  
Zdzislaw Wawrzak ◽  
Brandt F. Eichman
Keyword(s):  
Dna Repair ◽  
Dna Binding ◽  
Mutational Analysis ◽  
Alkylating Agents ◽  
Alkylation Damage ◽  
Superficial Resemblance ◽  
Dna Binding Site ◽  
Dna Alkylators ◽  
Mutagenic Effects ◽  
Fad Binding

Exposure of Escherichia coli to alkylating agents activates expression of AidB in addition to DNA repair proteins Ada, AlkA, and AlkB. AidB was recently shown to possess a flavin adenine dinucleotide (FAD) cofactor and to bind to dsDNA, implicating it as a flavin-dependent DNA repair enzyme. However, the molecular mechanism by which AidB acts to reduce the mutagenic effects of specific DNA alkylators is unknown. We present a 1.7-Å crystal structure of AidB, which bears superficial resemblance to the acyl-CoA dehydrogenase superfamily of flavoproteins. The structure reveals a unique quaternary organization and a distinctive FAD active site that provides a rationale for AidB's limited dehydrogenase activity. A highly electropositive C-terminal domain not present in structural homologs was identified by mutational analysis as the DNA binding site. Structural analysis of the DNA and FAD binding sites provides evidence against AidB-catalyzed DNA repair and supports a model in which AidB acts to prevent alkylation damage by protecting DNA and destroying alkylating agents that have yet to reach their DNA target.

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