Human intermediate reticular zone: A cyto and chemoarchitectonic study

1995 ◽  
Vol 360 (4) ◽  
pp. 571-588 ◽  
Author(s):  
Xu-Feng Huang ◽  
George Paxinos
Keyword(s):  
Reticular Zone

scholarly journals Adrenal glands of Spix's yellow-toothed cavy (Galea spixii, Wagler, 1831): morphological and morphometric aspects

2016 ◽  
Vol 76 (3) ◽  
pp. 645-655 ◽  
Author(s):  
A. C. Santos ◽  
D. C. Viana ◽  
B. M. Bertassoli ◽  
B. G. Vasconcelos ◽  
D. M. Oliveira ◽  
...  
Keyword(s):  
Adrenal Glands ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Male And Female ◽  
Physiological Importance ◽  
Transmission Electron ◽  
Left And Right ◽  
Hydroxy Progesterone ◽  
Reticular Zone ◽  
Cytochrome P450c17

Abstract Considering the physiological importance and need of greater morphophysiological knowledge of adrenal glands, the aims of present study were compare the morphometric data between left and right adrenal of male and female; perform a histological, scanning and transmission electron microscopy study showing tissue constitution of glands; finally, in order to define the presence and correct site of the cytochrome P450c17 expression in adrenal glands, immunohistochemical study of this enzyme was performed in 18 adrenal glands (right n=9 and left n=9) of nine adult Galea spixii (four males and five females). Right adrenal was more cranially positioned than left adrenal; dimensions (weight, length and width) of right adrenal was larger than left adrenal; no differences between male and female body and adrenal measurements were found; the morphology of cells and different amounts of lipid droplets may be related to the different demands of steroid hormones production, related to each zone of the adrenal cortex; and, the cytochrome P450c17 immunolocalization in fasciculate and reticular zone may be related with synthesis of 17-hydroxy-pregnenolone, 17-hydroxy-progesterone, dehydroepiandrosterone or androstenedione.

PATHOLOGICAL ANATOMICAL FINDINGS IN THE ADRENAL CORTEX IN TWO CASES OF CONGENITAL ADRENOCORTICAL HYPERPLASIA

1960 ◽  
Vol XXXIV (III) ◽  
pp. 457-464 ◽  
Author(s):  
J. C. Seelen
Keyword(s):  
Characteristic Feature ◽  
Adrenal Cortex ◽  
Adrenal Glands ◽  
Double Refraction ◽  
Lipid Distribution ◽  
Adrenocortical Hyperplasia ◽  
Reticular Zone ◽  
Foamy Cytoplasm

ABSTRACT The pathological anatomical findings in the adrenal cortex of two patients, aged 4 and 6, have been studied. Both adrenal glands had a cortex similar to that seen shortly after puberty; the reticular zone, however, was wide even for the postpuberal age. These findings are definitely anomalous for children who normally have a very poorly developed reticular zone. Hence a marked hyperplasia of this zone was present. Unlike other investigators, we found a normally developed fascicular zone with a normal foamy cytoplasm; the lipid distribution and double refraction also revealed a normal aspect. It is concluded that hyperplasia of the reticular zone is the characteristic feature of congenital adrenocortical hyperplasia and that the anomalies in cortisol synthesis are not clearly manifested in the fascicular zone.

THE EFFECT OF ACUTE STARVATION ON THE BODY ORGANS OF THE ADULT WHITE RAT, WITH ESPECIAL REFERENCE TO THE ADRENAL GLANDS

1946 ◽  
Vol 24e (2) ◽  
pp. 37-48 ◽  
Author(s):  
A. T. Cameron ◽  
J. Carmichael
Keyword(s):  
Body Weight ◽  
Water Content ◽  
Pathological Process ◽  
Solid Content ◽  
The Body ◽  
Whole Body ◽  
Typical Behaviour ◽  
B Complex Vitamins ◽  
Increased Activity ◽  
Reticular Zone

When rats are starved by withholding all food, though giving water, they develop, two or threes days before death a typical behaviour syndrome, in winch at first there is increased activity, and subsequently, in old animals, marked immobility. At this pre-mortal stage in old animals, or the corresponding stage in younger rats, they have lost 30% or more of their body weight, and if they killed the adrenals are found to be enlarged and discoloured to a dark grey or dark dirty grey. These enlarged glands contain an increased amount of water though their solid content remains practically unaltered, the change representing an increase in the water content of the cells (possibly confined to the cortex). The glomerular zone is diminished in thickness, and the reticular zone also shows abnormality. Animals killed before they have lost 30% of their body weight still have normal adrenals (normal in size, weight, water content, and colour). The enlargement produced m the pre-mortal stage of inanition is a pathological process and is not a hypertrophy. Data in the literature suggest that certain types of adrenal enlargement such as that produced by deficiency of the B-complex vitamins may be similar in nature. The kidneys, heart, and gonads of acutely starved rats tend to lose weight more slowly than the whole body; the liver and spleen more rapidly; and the thyroid at about the same rate.

The Reticular Zone of the “Planum Semilunatum”

1962 ◽  
Vol 54 (1-6) ◽  
pp. 27-32 ◽  
Author(s):  
E. Borghesan
Keyword(s):  
Reticular Zone

scholarly journals Variable opacity of glycogen in routine electron micrographs.

1977 ◽  
Vol 25 (9) ◽  
pp. 1069-1073 ◽  
Author(s):  
L E Thornell ◽  
M Sjöström ◽  
U Karlsson ◽  
E Cedergren
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Electron Micrographs ◽  
Periodic Acid ◽  
Frog Muscle ◽  
Nerve Terminals ◽  
Lead Citrate ◽  
Serial Sections ◽  
Transmission Electron ◽  
Reticular Zone

Glycogen in nerve terminals from the reticular zone of frog muscle was identified by transmission electron microscopy of both periodic acid-thiosemicarbazide-silverproteinate treated and UAc-PbCi-stained serial sections. A variable appearance of glycogen in the uranylacetate-lead citrate-stained nerve terminals was seen and is related to the preparative procedure. The study indicates the necessity of cytochemical identification for the assessment of glycogen organization in cells.

Ultrastructure of rhoptry development in Plasmodium falciparum erythrocytic schizonts

Parasitology ◽  
2000 ◽  
Vol 121 (3) ◽  
pp. 273-287 ◽  
Author(s):  
L. H. BANNISTER ◽  
J. M. HOPKINS ◽  
R. E. FOWLER ◽  
S. KRISHNA ◽  
G. H. MITCHELL
Keyword(s):  
Plasmodium Falciparum ◽  
Granular Material ◽  
Nuclear Membrane ◽  
Apical Part ◽  
Coated Vesicles ◽  
The Other ◽  
Basal Region ◽  
Serial Sections ◽  
Reticular Zone ◽  
Electron Lucent

Prior to the separation of merozoites from the Plasmodium falciparum schizont, various stage-specific organelles are synthesized and assembled within each merozoite bud. The apical ends of the merozoites are initiated close to the ends of endomitotic spindles. At each of these sites, the nuclear membrane forms coated vesicles, and a single discoidal or cup- like Golgi cisterna appears. Reconstruction from serial sections indicates that this structure receives vesicles from the nuclear envelope and in turn gives off coated vesicles to generate the apical secretory organelles. Rhoptries first form as spheroidal structures and grow by progressive fusion of small vesicles around their margins. As each rhoptry develops, 2 distinctive regions separate within it, an apical reticular zone with electron-lucent areas separated by cords of granular material, and a more homogenously granular basal region. The apical part elongates into the duct, with evidence for further vesicular fusion at the duct apex. The rounded rhoptry base becomes progressively more densely packed to form a spheroidal mass, and compaction also occurs in the duct. Typically, one rhoptry matures before the other. Cryofractured rhoptry membranes show asymmetry in the sizes and numbers of intramembranous particles at the internally- and externally-directed fracture faces.

ADRENAL STEROID SYNTHESIS IN AMYLOID DEGENERATION LOCALISED EXCLUSIVELY TO THE ZONA RETICULARIS

1961 ◽  
Vol 37 (3) ◽  
pp. 321-328 ◽  
Author(s):  
J. Ofstad ◽  
J. Lamvik ◽  
K. F. Støa ◽  
R. Emberland
Keyword(s):  
Pulmonary Fibrosis ◽  
The Other ◽  
Renal Amyloidosis ◽  
Zona Fasciculata ◽  
Post Mortem ◽  
Steroid Synthesis ◽  
Zona Reticularis ◽  
Adrenal Steroid ◽  
Post Mortem Examination ◽  
Reticular Zone

ABSTRACT In a 47-year-old male suffering from bronchiectasis, pulmonary fibrosis and renal amyloidosis, post-mortem examination of the adrenals revealed amyloid degeneration of the zona reticularis, the other adrenocortical zones being apparently intact. A thorough analysis of the endocrine functions during the last period of his life showed an abnormally low production of C19-steroids, even following corticotrophin stimulation. The formation of 17-hydroxycorticosteroids was found to be normal, while, on the other hand, the aldosterone excretion was elevated. These findings may imply that the synthesis of adrenal C19-steroids takes place in the reticular zone, while the C21-steroids apparently can be formed predominantly in the zona fasciculata.

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