Boundary Between the Satellite Cell Sheath and the Connective Tissue Space

1981 ◽  
pp. 37-39
Author(s):  
Ennio Pannese
Keyword(s):  
Connective Tissue ◽  
Satellite Cell ◽  
Tissue Space ◽  
Connective Tissue Space ◽  
Cell Sheath

scholarly journals INFLAMMATION OF INTERSTITIAL CONNECTIVE TISSUE SPACE INDUCED BY LEAD ACETATE AND AMELIORATIVE AFTERMATH OF FICUSCARICAON RAT TESTIS

2021 ◽  
Vol 71 (3) ◽  
pp. 1066-70
Author(s):  
Ayesha Asad ◽  
Shabnam Hamid ◽  
Afnan Gul ◽  
Noreen Anwar ◽  
Dujanah Bhatti ◽  
...  
Keyword(s):  
Connective Tissue ◽  
Lead Acetate ◽  
Interstitial Space ◽  
Male Rats ◽  
Space Thickness ◽  
Rat Testis ◽  
Interstitial Connective Tissue ◽  
Tissue Space ◽  
Group B ◽  
Connective Tissue Space

Objective: To observe inflammation of interstitial connective tissue space caused by Lead acetate in rat testis and ameliorative after math caused by Ficuscarica. Study Design: Laboratory based experimental study. Place and Duration of Study: Anatomy Department, Army Medical College Rawalpindi together with NIH (National Institute of Health) Islamabad, from Mar to Nov 2017. Methodology: Sprague Dawley male rats, 30 in quantity were chosen and 10 animals each partited into 3 groups. Treatments were given for 8 weeks, once daily. Group A was control group. Group B was treated with dosage of 30 mg/kg of Lead acetate. Group C was given dosage of 30 mg/kg of Lead acetate as well as 80 mg/kg of Ficuscarica. Twenty four hours after the concluding dose, animals were vivisected. For histological study, testis were fixed and stained with Haematoxylin and eosin. Interstitial connective tissue space thickness was morphometrically and assessed by SPSS version 22. A p-value <0.05 was considered significant in results. Results: Interstitial space thickness was significantly increased due to inflammation (>3 times normal) in group B in comparison to groups A and C. Thickness of space was slightly increased (<2 times normal) in group C in comparison to groups A due to reduction in inflammation. Conclusion: There was increased thickness of interstitium due to inflammation, cellular congestion and lymphocytic infiltration in rat’s testis because of lead acetate but concomitant dose of Ficuscarica protects against inflammation, venous congestion of interstitial space.

scholarly journals TRANSPLANTATION OF TOOTH GERM ELEMENTS AND THE EXPERIMENTAL HETEROTOPIC FORMATION OF DENTIN AND ENAMEL

1934 ◽  
Vol 60 (2) ◽  
pp. 199-210 ◽  
Author(s):  
C. B. Huggins ◽  
H. R. McCarroll ◽  
A. A. Dahlberg
Keyword(s):  
Connective Tissue ◽  
Soft Tissues ◽  
Tooth Germ ◽  
Enamel Organ ◽  
Cylindrical Shape ◽  
Form And Function ◽  
Tissue Space ◽  
Pearl Formation ◽  
And Function ◽  
Connective Tissue Space

The formation of dentin and enamel in the abdominal wall in young pups was achieved by transplantation of the soft tissues of the developing tooth germ. An interesting finding was the cytomorphosis of the epithelium of the enamel organ. When this was transplanted so that the ameloblasts were in contact with the odontoblasts the cylindrical character of the epithelial cells was preserved and enamel was produced; otherwise the cylindrical shape of these cells was lost and a stratified epithelium resulted, resembling the gingival and certain tumors (the adamantinoma) of the jaw and related structures. This degenerated epithelium did not produce enamel and had an important characteristic of not forming cysts in a closed connective tissue space, instead forming islands and cords of cells with epithelial pearl formation. Thus the influence of mesodermic connective tissue derivatives on the form and function of epithelium is presented. The odonto-blasts were found capable of survival as such and readily formed new dentin in transplantation; the stellate cells of the pulp were inert from the standpoint of inducing calcification.

The Morphology of the Pecten Oculi and the Conus Papillaris

1968 ◽  
Vol 26 ◽  
pp. 170-171
Author(s):  
R. F. Dunn
Keyword(s):  
Basement Membrane ◽  
Pigment Cell ◽  
Pigment Cells ◽  
Capillary Endothelium ◽  
House Finch ◽  
Osmiophilic Granules ◽  
Pecten Oculi ◽  
Tissue Space ◽  
Endothelial Basement Membrane ◽  
Connective Tissue Space

In this study, the pecten of the house finch, and the conus of the gecko, Eublipharis, were utilized. The structure of the house finch pecten resembled that of the pigeon. The capillary endothelium is characterized by an extensive luminal and abluminal system of plasma membrane plications (Fig. 1, LP and AP). The luminal ridges vary in length from 1.3 - 2.9μ, and are 40-90 mμ in width. The luminal and abluminal plications are separated by the narrow, rather dense endothelial cytoplasm which contains free ribosomes and dense mitochondria in addition to granular cytomembranes. The abluminal ridges are generally shorter, and rest on a basement membrane. Many of the pecten surface capillaries are separated from the vitreous by only a short distance of about 1μ. In other regions the capillaries are surrounded by pigmented cells, which contain smooth surfaced, very osmiophilic granules up to 1.6μ in diameter, a few smaller, irregularly shaped granules and the usual compliment of cytoplasmic organelles (Fig. 2).In sharp contrast to the pecten, the endothelium of the conus is relatively smooth and lacks any surface foldings as well as any fenestrations (Fig. 3). The endothelial basement membrane is separated from that of the pigment cell by a variable extracellular connective tissue space containing many collagen fibrils. The pigment cells contain melanin granules similar to those of the pecten (Fig.4).

Extracellular Connective Tissue Fibrils: A Single Line of Descent

1968 ◽  
Vol 26 ◽  
pp. 52-53
Author(s):  
F. N. Low
Keyword(s):  
Connective Tissue ◽  
Close Association ◽  
Collagen Fibrils ◽  
Elastic Fibers ◽  
Chick Embryos ◽  
Basal Surface ◽  
The Third ◽  
Tissue Space ◽  
Dorsal Ectoderm ◽  
Boundary Membrane

The fine structure of developing extracellular connective tissue fibrils, is demonstrable in normal chick embryos. Before incubation begins primary fibrils are present in the intermittent boundary membrane (basement membrane, basal lamina) of the basal surface of the epiblast. These give rise to microfibrils which first become free in the tissue space at about 24 hours incubation (Fig. 1). The first noticeable locus of microfibrillar concentration appears between the head process (early notochord) and the dorsal ectoderm. By 40 to 45 hours a heavy tangle of microfibrils occupies the acellular area surrounding the notochord and remains conspicuous during the third day (Fig. 2). At 60 to 72 hours microfibrils begin to appear in close association with free mesenchymal cells (Fig. 3). Periodicity slowly develops in the larger microfibrils and the resultant unit collagen fibrils will aggregate to form the reticular and collagen fibers of light microscopy. During the second and third weeks of incubation microfibrils and unit collagen fibrils contribute to the formation of elastic fibers.

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