scholarly journals Blood Cell Profile of the Developing Tadpoles and Adults of the Ornate Frog,Microhyla ornata(Anura: Microhylidae)

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Jutshina Hota ◽  
Madhusmita Das ◽  
Pravati Kumari Mahapatra
Keyword(s):  
Blood Cell ◽  
Larval Development ◽  
The Other ◽  
Gosner Stage ◽  
Polymorphic Forms ◽  
Cell Profile

Metamorphosis happens to be an important event in the lifetime of amphibians. Our study offers a record of blood cell profile of laboratory reared tadpoles during development and metamorphosis (Gosner stage 26 to 46) and adults ofMicrohyla ornata. The larval erythrocytes were observed to be circular, oval, and elliptical in shape. However, other variations were distinct during the prometamorphic and metamorphic stages. Crenulated erythrocytes showed a pattern of appearance, and the crenulations varied from minute serrations to highly spiked projections. Correlations between the morphometric values of erythrocytes during the larval development were also determined. The leukocyte profile of the tadpoles showed a high percentage of lymphocytes during larval development while the percentage of monocytes, eosinophils, and neutrophils remained high during metamorphosis and were positively correlated with the developing stages. Blood thrombocytes of the tadpoles were small and were found in clusters. Elliptical erythrocytes were the most common in the adult frogs. However, few erythrocytes were also circular in shape. In adults, the percentage of lymphocytes was found to be more in comparison with the other leucocytes, and neutrophils showed various polymorphic forms. Thrombocytes were nucleated and spindle shaped.

scholarly journals A new Synbranchus (Teleostei: Synbranchiformes: Synbranchidae) from ilha de Marajó, Pará, Brazil, with notes on its reproductive biology and larval development

2005 ◽  
Vol 3 (3) ◽  
pp. 319-328 ◽  
Author(s):  
Sandra E. Favorito ◽  
Angela M. Zanata ◽  
Maria I. Assumpção
Keyword(s):  
New Species ◽  
Larval Development ◽  
Reproductive Biology ◽  
Color Pattern ◽  
The Other ◽  
Larval Stages ◽  
Marajó Island ◽  
Northern Brazil

Synbranchus lampreia, new species, is described from rio Goiapi, Marajó Island, Pará, northern Brazil. It differs from the other two described species of the genus by its color pattern, which consists of large roundish black blotches scattered over a light brown or yellowish ground pigmentation and presence of inconspicuous brown small spots distributed among the large dark spots. The species is further distinguished from S. marmoratus by a higher number of vertebrae and from S. madeira by a shorter postanal length. Information about reproductive aspects is provided and larval stages are described and illustrated.

scholarly journals Effects of dietary Mannan oligosaccharide (MOS) on grown, survival rate, intestinal morphology and blood cell count of the golden trevally fish (Gnathanodon specious)

2019 ◽  
Vol 19 (4A) ◽  
pp. 241-250
Author(s):  
Dang Tran Tu Tram ◽  
Nguyen Thi Nguyet Hue ◽  
Ho Son Lam ◽  
Nguyen Truong Tan Tai ◽  
Dao Thi Hong Ngoc
Keyword(s):  
Survival Rate ◽  
Blood Cell ◽  
Blood Cells ◽  
White Blood Cells ◽  
Intestinal Morphology ◽  
The Other ◽  
Control Group ◽  
Blood Cell Count ◽  
Mannan Oligosaccharide ◽  
Erythrocyte Density

The golden trevally fishes (Gnathanodon specious) (2.19 ± 0.23 g) were cultured in glass tanks with density of 20 fishes/tank and they were fed supplemental diets of different MOS concentrations (0; 0.2; 0.4 and 0.6%) for 90 days. Collected data included growth rate, survival rate and some hematological characteristics of this fish. The results demonstrated that MOS supplementation did not affect growth performance, erythrocyte density and blood cell size, however the survival rate was significantly increased. On the other hand, the total number of white blood cells (BC) on the 60th day in the fish fed with MOS supplements (5.78–6.96 × 104TB/mm3) was higher than that in the control group (only 5.43 × 104TB/mm3) with the largest total leukocytes (6.96 ± 0.50 × 104TB /mm3) at 0.2% MOS (p < 0.05).

Larval development of Petrolisthes tuberculatus (Guérin, 1835) (Decapoda, Anomura, Porcellanidae) reared in laboratory

Zootaxa ◽  
2019 ◽  
Vol 4623 (2) ◽  
pp. 364-380
Author(s):  
MARIA EUGENIA GONZALEZ-CANALES ◽  
JOSE A. CUESTA ◽  
JUAN IGNACIO GONZÁLEZ-GORDILLO
Keyword(s):  
Larval Development ◽  
The Other ◽  
Larval Stages ◽  
First Time

The complete larval development of Petrolisthes tuberculatus (including two zoeal stages and the megalopa) is described and illustrated in detail for the first time, based on laboratory-reared material. In order to allow the differentiation of specimens from plankton samples, the larval stages of P. tuberculatus are compared with those known for other porcellanid crabs from Chilean waters (Allopetrolisthes angulosus, Petrolisthes granulosus, P. laevigatus and P. violaceus). As expected, this comparison lead to the inclusion of P. tuberculatus within the “sección Porcellanina” together with the other Chilean species of porcellanids. 

Effect of the Red Blood Cells on the Primary Thrombus Formation

2007 ◽  
Author(s):  
Koichiro Yano ◽  
Daisuke Mori ◽  
Ken-ichi Tsubota ◽  
Takuji Ishikawa ◽  
Shigeo Wada ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Blood Flow ◽  
Blood Cell ◽  
Blood Cells ◽  
Thrombus Formation ◽  
The Other ◽  
Biochemical Processes ◽  
Mechanical Factors ◽  
Molecular Bridge

It has been pointed out that some mechanical factors play important roles in a series of physiological or biochemical processes during the thrombus formation. Recently, many studies including the authors’ work qualitatively demonstrated how the thrombus is regulated under the influences of the blood flow and the intercellular molecular bridge using computational fluid dynamics techniques[1–4]. They verified the importance of the balance of them in the process of the thrombus formation. However, few studies have taken into account the existence of the other cell constituents than the platelet such as red blood cell (RBC).

scholarly journals Molecular Modelling of Human Red Blood Cell Pyruvate Kinase: Structural Implications of a Novel G1091 to A Mutation Causing Severe Nonspherocytic Hemolytic Anemia

Blood ◽  
1997 ◽  
Vol 90 (12) ◽  
pp. 4987-4995 ◽  
Author(s):  
Wouter W. van Solinge ◽  
Rob J. Kraaijenhagen ◽  
Gert Rijksen ◽  
Richard van Wijk ◽  
Bjarne B. Stoffer ◽  
...  
Keyword(s):  
Blood Cell ◽  
Pyruvate Kinase ◽  
Hemolytic Anemia ◽  
Red Blood Cell ◽  
Molecular Modelling ◽  
Human Liver ◽  
The Other ◽  
Salt Bridges ◽  
Compound Heterozygotes ◽  
Allosteric Properties

Abstract We present a novel G1091 to A mutation in the human liver and red blood cell (RBC) pyruvate kinase (PK) gene causing severe hemolytic anemia. In two families, three children were severely PK-deficient compound heterozygotes exhibiting the G1091 to A mutation and a common G1529 to A mutation on the other allele. In one family, the mother, a G1091 to A heterozygote, later had a second baby with a new husband, also a G1091 to A carrier. The baby was homozygous for the G1091 to A mutation and died 6 weeks after birth from severe hemolysis. Both mutant alleles were expressed at the RNA level. The G1091 to A mutation results in the substitution of a conserved glycine by an aspartate in domain A of RBC PK, whereas the G1529 to A mutation leads to the substitution of a conserved arginine residue with glutamine in the C-domain. Molecular modelling of human RBC PK, based on the crystal structure of cat muscle PK, shows that both mutations are located outside the catalytic site at the interface of domains A and C. The mutations are likely to disrupt the critical conformation of the interface by introducing alternative salt bridges. In this way the Gly364 to Asp and Arg510 to Gln substitutions may cause PK deficiency by influencing the allosteric properties of the enzyme.

Evaluation of Platelet Concentrates with the New Dideco Blood Cell Separator: Excel

1993 ◽  
Vol 16 (5_suppl) ◽  
pp. 130-134 ◽  
Author(s):  
F. Schooneman
Keyword(s):  
Blood Cell ◽  
Platelet Activation ◽  
Complement Activation ◽  
The Other ◽  
Platelet Concentrates ◽  
Cell Separator ◽  
Good Compromise ◽  
Blood Cell Separator ◽  
The Future

The Excel Cell Separator produced by Dideco represents a good compromise between automation and Platelet efficiency. Platelet activation is a phenomenon that we can find with the concentrates of all cell separators. Although, the complement activation of Excel is extremely lower in comparison with the same data obtained using all the other cell separators, the 5-day storage is acceptable. It will be important to research the bacteriological controls. Like the pH of the platelet bags, because in certain cases it was too low. For the future it will be interesting to study the possibility to predict the quantity of platelets collected having a system that is adaptable with the donor parameters.

The Determination of Sex and Polymorphism in Microevolution

1964 ◽  
Vol 96 (1-2) ◽  
pp. 418-428 ◽  
Author(s):  
G. Stehr
Keyword(s):  
Natural Selection ◽  
Larval Development ◽  
Selection Pressure ◽  
The Other ◽  
Quantitative Character ◽  
Short Term ◽  
Balance System ◽  
Wing Colour ◽  
Adult Wing

AbstractEnvironmental instabilities may be grouped into three broad categories each with different conseqences for the organism which has to survive the stress of these instabilities. On one side are irreversible changes of the environment which will lead to complete adaptive compliance or conformity of the population, brought about by natural selection. On the other side are short-term recurrent instabilities, fluctuations, or oscillations; if their cycle is short enough so that all phases are experienced by all individuals of each generation, natural selection will promote the ability of each individual to withstand the whole range of environmental recurrent fluctuations. Between these extremes are recurrent instabilities that are not experienced by all individuals, or by each generation; here natural selection will evolve mechanisms that prevent the population from conforming with any temporary selection pressure. Polymorphism is such a mechanism, specifically polymorphism based on a gene potency balance system modelled on the same principles as the system that determines sex, the most common example of polymorphism. Instances of such polymorphism in a genus of tortricid moths include haemolymph pigment, adult wing colour, and rate of larval development. The latter exemplifies polymorphism of a quantitative character.

Studies in Red Blood Cell Preservation 1. Effect of the Other Formed Elements

Vox Sanguinis ◽  
1990 ◽  
Vol 58 (2) ◽  
pp. 85-89 ◽  
Author(s):  
T. J. Greenwalt ◽  
C. Zehner Sostok ◽  
U. J. Dumaswala
Keyword(s):  
Blood Cell ◽  
Red Blood Cell ◽  
The Other ◽  
Cell Preservation

BIOGENIC AMINES AND FECUNDITY OF TRIBOLIUM CONFUSUM DUVAL (COLEOPTERA)

1964 ◽  
Vol 42 (6) ◽  
pp. 757-762
Author(s):  
J. Leblanc ◽  
J. L. Villeneuve ◽  
A. Lemonde
Keyword(s):  
Larval Development ◽  
Biogenic Amines ◽  
Basal Diet ◽  
Tribolium Confusum ◽  
The Other ◽  
Decarboxylase Inhibitor ◽  
Other Hand ◽  
Methyl Dopa ◽  
Insect Reproduction ◽  
Catechol Amines

Aminoguanidine, a histaminase inhibitor, was found to increase fecundity of Tribolium confusum (Coleoptera) when added as a supplement to the basal diet in concentrations of 0.01 and 0.5%. On the other hand alpha-methyl dopa, a decarboxylase inhibitor, had no effect on larval development except at a concentration of 1% where it was shown to be highly toxic. No catechol amines were found in adults of this species, but histamine was always detected and reached higher levels in insects fed higher concentrations of aminoguanidine. These results suggest a possible role for histamine in insect reproduction.

scholarly journals Delineation of fucosyltransferase activities with thiol reagents

1979 ◽  
Vol 181 (3) ◽  
pp. 767-769 ◽  
Author(s):  
D Kessel ◽  
T H Chou
Keyword(s):  
Blood Cell ◽  
The Other ◽  
Terminal Galactose ◽  
Thiol Reagent

The thiol reagent dithiothreitol inhibits the activity of a core GDP-fucose-N-acetylglucosaminide alpha-6-fucosyltransferase in plasma and blood-cell homogenates, while promoting the activity of alpha-2- and alpha-3-fucosyltransferases. The latter enzymes catalyse transfer of fucose on to terminal galactose and subterminal N-acetylglucosamine residues respectively. A thiol-blocking reagent N-ethylmaleimide does not affect the activity of the alpha-6-fucosyltransferase, but inhibits the other two enzymes. These results indicate the presence of a critical disulphide linkage in the alpha-6-fucosyltransferase, and provide a means of delineation of different fucosyltransferases.

Sign in / Sign up

Export Citation Format

Share Document