scholarly journals SOME TOPOGRAPHICAL AND HISTOLOGICAL STUDIES OF THYROID AND PARATHYROD GLANDS OF MOORHEN (Gallinula c. chloropus)

2021 ◽  
Vol 22 (1) ◽  
pp. 85-96
Author(s):  
K.K. Kadhim ◽  
N.S. Al-Samarrae ◽  
J.Y. Al-Fayas
Keyword(s):  
Thyroid Gland ◽  
Connective Tissue ◽  
Parathyroid Glands ◽  
Histological Studies ◽  
Connective Tissue Capsule ◽  
Small Branch ◽  
Thyroid Glands ◽  
The Common ◽  
Parenchymal Cells ◽  
Tissue Capsule

 The thyroid gland of Moorhen has two separated lobes. These lobes were located in the throracic inlet and receive blood supply from the cranial, middle and caudal thyroid arteries. The histological organization of the thyroid gland in Moorhen is surrounded by a distinct connective tissue capsule and the parenchymal cells were arranged into colloid filled follicles enmeshed in the highly vascular interstitial connective tissue. The bilaterally paired, round to oval, parathyroid glands in Moorhen were located intrathoracically near or close to the caudal pole of the thyroid glands. They receive blood by short branches from caudal thyroid artery and small branch from the common carotid artery. The parathyroid glands in Moorhen have a thin connective tissue capsule. Its parenchymal cells were arranged into an irregular, anastomosing cords of chief cells. No oxyphil cells were found in the parathyroid glands of Moorhen.

scholarly journals Implants and bone technology with the use of doped calcium carbonate phosphates

2020 ◽  
pp. 54-61
Author(s):  
L. F. Koroleva ◽  
◽  
L. P. Larionov ◽  
M. N. Dobrinskaya ◽  
◽  
...  
Keyword(s):  
Drug Delivery ◽  
Calcium Carbonate ◽  
Connective Tissue ◽  
Blood Vessels ◽  
Bone Repair ◽  
Living Organism ◽  
Nerve Endings ◽  
Histological Studies ◽  
Connective Tissue Capsule ◽  
Tissue Capsule

The possibility of obtaining an alloplastic biomaterial for the implant based on doped calcium carbonate-phosphates and polycaprolactone is studied. Nanocrystalline calcium carbonate-phosphate doped with cations of iron, magnesium, potassium, zinc, manganese, and silicon intended for bone repair by drug delivery is investigated. Histological studies have revealed that samples after 60 days in a living organism are covered by a connective tissue capsule. The formation of blood vessels and nerve endings is observed in the capsule.

scholarly journals A Quiescent Colossal Radicular Cyst: A Diverse Histological Presentation

2013 ◽  
Vol 4 (4) ◽  
pp. 286-290
Author(s):  
V Reshma ◽  
Radhika M Bavle ◽  
BK Varsha ◽  
BM Kavya
Keyword(s):  
Connective Tissue ◽  
Periodontal Ligament ◽  
Radicular Cyst ◽  
Cell Infiltrate ◽  
Jaw Cysts ◽  
Connective Tissue Capsule ◽  
Tissue Capsule

ABSTRACT Radicular cysts are the most frequent inflammatory cysts comprising of about 52 to 68% of all the jaw cysts. It arises from the epithelial residues in the periodontal ligament space following pulpal necrosis. The distinguished lining of the cystic lumen is hyperplastic stratified squamous nonkeratinizing epithelium showing arcading pattern with dense infammatory cell infiltrate, cholesterol clefts, Russell bodies and Ruston bodies in the connective tissue capsule. Here, we present an unusual large radicular cyst lined almost entirely by quiescent atrophic epithelium, which is innocuous, persistent, has enlarged overtime, with minimal infammatory cells in the connective tissue capsule. How to cite this article Reshma V, Bavle RM, Varsha BK, Kavya BM. A Quiescent Colossal Radicular Cyst: A Diver Histological Presentation. World J Dent 2013;4(4):286-290.

Evaluation of biocompatibility of an experimental membrane for glucose sensors: the results of a prospective experimental controlled preclinical study involving laboratory animals

2017 ◽  
Vol 63 (4) ◽  
pp. 219-226 ◽  
Author(s):  
Yaroslav M. Stanishevskiy ◽  
Nadezhda P. Sachivkina ◽  
Yuriy V. Tarasov ◽  
Yury I. Philippov ◽  
Sergey A. Sokolov ◽  
...  
Keyword(s):  
Connective Tissue ◽  
Membrane Surface ◽  
Glucose Sensors ◽  
Laboratory Animals ◽  
Skin Reactions ◽  
Inflammatory Reactions ◽  
Connective Tissue Capsule ◽  
Coated Membranes ◽  
Coated Membrane ◽  
Tissue Capsule

An increase in the accuracy of monitoring of glucose concentration indicators and an increase in the running time of glucose sensors are promising directions in the field of diabetology. One of the ways to extend the lifetime of a sensor is its complete implantation excluding direct communication with the skin surface. For effective long-term functioning in the patient’s body, the surface of an implantable sensor should be highly biocompatibile: it should not induce allergic and inflammatory reactions as well as the demarcation reaction (formation of a dense connective tissue capsule). Earlier, a group of authors developed a glucose-permeable membrane and a biocompatible coating comprising a complex of nadroparin with transesterified polyethylene glycol and γ-aminopropyl triethoxysilane, which formed a protein repellent hydrogel on the membrane surface. Aims. To evaluate the biocompatibility of the experimental coated membrane implanted into laboratory animals. Methods. The experimental prospective controlled study involved 60 laboratory animals (Wistar albino rats). The animals were divided into 3 groups of 20 animals each. Animals of each group were implanted with the standard, or experimental, or experimental coated membrane. After implantation, the skin condition in the implantation area was visually assessed for 90 days. After 90 days, the tissue condition around the implant was evaluated histologically. Results. No serious allergic or inflammatory reactions in the implantation area were detected in all three groups of animals within 90 days of the follow-up period. In the case of the experimental coated membrane, a significantly low score was graded based on visual assessment of the skin reactions. In the histological analysis, the tissue condition in the implantation area of the coated membranes was characterized by significantly lower density of a connective tissue capsule and the presence of vascularization areas at the contact between of the membrane surface and the surrounding tissue. Conclusion. In experimental animals, the tested coating significantly inhibits formation of a connective tissue capsule around the implant and reduces the intensity of skin reactions after implantation. Further clinical studies of coated membranes in humans are required to verify their biocompatibility.

Microsporidial Infection of English Sole, Parophrys vetulus

1969 ◽  
Vol 26 (8) ◽  
pp. 2215-2218 ◽  
Author(s):  
S. R. Wellings ◽  
L. E. Ashley ◽  
G. E. McArn
Keyword(s):  
Connective Tissue ◽  
Intermediate Layer ◽  
English Sole ◽  
Central Mass ◽  
Connective Tissue Capsule ◽  
Parophrys Vetulus ◽  
Tissue Capsule

Infection of two English sole, Parophrys vetulus, probably by Glugea hertwigi, is described. Numerous Glugea cysts (xenomas), measuring 0.5–1.0 mm in diameter, were located throughout the entire intestine distal to the stomach and including the pyloric caecae. A few cysts were located in the mesentery, pancreas, and liver. Microscopically, the cysts were composed of a hyaline connective tissue capsule, enclosing an intermediate layer of syncytium and a central mass of mature spores.

scholarly journals THE RELATION BETWEEN THE THYROID AND PARATHYROID GLANDS

1916 ◽  
Vol 24 (5) ◽  
pp. 547-559 ◽  
Author(s):  
Andreas Tanberg
Keyword(s):  
Thyroid Gland ◽  
Parathyroid Gland ◽  
Clinical Symptoms ◽  
Parathyroid Glands ◽  
Indirect Interaction ◽  
Thyroid Glands ◽  
Meat Diet ◽  
Two Systems

The following conclusions may be drawn from the experiments presented in this article. 1. Excessive meat diet develops hypertrophy of the thyroid gland. A definite hypertrophy of the parathyroid gland under the same conditions has not been established. A meat diet does not develop hypertrophy of the thyroid gland when insufficiency of the parathyroid gland exists at the same time, even if no clinical symptoms are present. Where a pronounced hypertrophy caused by a meat diet has already developed, the hypertrophy disappears and the gland assumes its ordinary appearance after extirpation of a sufficiently large number of parathyroid glands. 2. After parathyroidectomy no hypertrophy of the thyroid gland takes place. In chronic tetany the thyroid gland seems, on the contrary, to atrophy in spite of a meat diet. 3. After complete extirpation of the thyroid gland, the parathyroid gland does not change its structure, even in cases where the cachexia lasts for several years. Small remaining parts of the thyroid gland may through hypertrophy develop into compact tissue and thereby seemingly present some points of resemblance to the parathyroid gland. 4. When the parathyroid gland hypertrophies, as in some forms of chronic tetany, this hypertrophy is characterized by the development of large, transparent, sharply defined cells, with large nuclei rich in chromatin. 5. The parathyroid and thyroid glands are independent organs, each having specific functions. This, however, does not exclude the occurrence of a direct or indirect interaction in the functions of the two systems. 6. There is reason to believe that an insufficiency of the parathyroid gland checks to some extent the function of the thyroid gland. No proof of the existence of a vicarious cooperation between the two glands has been established.

scholarly journals Bilateral adrenal-renal fusion: A radiological diagnosis

2019 ◽  
Vol 5 (2) ◽  
pp. 20180108
Author(s):  
Rebecca Bamford ◽  
Josephine Bretherton ◽  
Nicola Rosenfelder ◽  
James Bell
Keyword(s):  
Connective Tissue ◽  
Embryonic Development ◽  
Histological Examination ◽  
Adrenal Glands ◽  
Normal Anatomy ◽  
True Incidence ◽  
Connective Tissue Capsule ◽  
Mesenchymal Tissue ◽  
Renal Fascia ◽  
Tissue Capsule

In normal anatomy, the kidneys and adrenal glands are contained within the renal fascia and separated by a connective tissue capsule derived from mesenchymal tissue. Incomplete encapsulation can occur during embryonic development, resulting in adrenal-renal fusion. The true incidence of this developmental anomaly is unknown, as it has primarily been described in the literature following incidental detection on surgical or histological examination. We report the first documented case of bilateral adrenal-renal fusion, diagnosed radiologically.

An Unusual Complication of Silastic Dural Substitute: Case Report

Neurosurgery ◽  
1990 ◽  
Vol 27 (3) ◽  
pp. 491-493 ◽  
Author(s):  
Thomas H. K. Ng ◽  
Kwan Hon Chan ◽  
Suet Yi Leung ◽  
Kirpal S. Mann
Keyword(s):  
Case Report ◽  
Connective Tissue ◽  
Unusual Complication ◽  
Graft Material ◽  
Recurrent Meningioma ◽  
Dural Substitute ◽  
Connective Tissue Capsule ◽  
Tissue Capsule

Abstract A case is presented in which a patient developed an unusual complication after the use of Silastic dural substitute. In 1983. the patient underwent removal of a meningioma with the involved dura. Five years later, he developed around the graft material a very thick connective tissue capsule, which simulated a recurrent meningioma clinically and radiologically.

scholarly journals The effectiveness of the reparative processes stimulation of the platelet-rich plasma in case of the abdominal wall endoprosthetics

2018 ◽  
Vol 11 (4) ◽  
pp. 275-284
Author(s):  
BORIS Semenovich Sukovatykh ◽  
MARIA Alexeevna Zatolokina ◽  
Tamara Viktorovna Mutova ◽  
Nelli M Valuyskaya ◽  
Valeriy Anatolievich Zhukovsky
Keyword(s):  
Connective Tissue ◽  
Abdominal Wall ◽  
Layer Structure ◽  
Platelet Rich Plasma ◽  
Histological Study ◽  
Collagen Fibers ◽  
The Third ◽  
Connective Tissue Capsule ◽  
Fibroblastic Cells ◽  
Tissue Capsule

Relevance. The number of ventral hernias recurrence after abdominal wall endoprosthetics with the lightweight endoprosthesis is 8-10%. The purpose of the research is to study the morphological changes of the connective tissue, surrounding a lightweight polypropylene endoprosthesis, at the early stages of implantation at the use of platelet-rich autoplasma. Materials and methods. The results of experimental research of the course of wound process in the abdominal wall tissues during the implantation of the lightweight polypropylene prosthesis on 50 Chinchilla rabbits divided into 2 groups of 25 animal units each have been analyzed. Subaponeurotic implantation of the prosthesis was carried out in the first group of animals. In the second group, the platelet-rich autoplasma was twice introduced after the implantation of the prosthesis during surgery and on the third day of the postoperative period at the rate of 0,5 ml plasma per 1 cm2 of the endoprosthesis. The animals were taken away from the experiment on the 3rd, 7th, 10th, 14th and 21st day. Morphometric and histological study of reactive changes of tissue surrounding the implanted endoprosthesis was carried out. Results and its discussion. In the animals of the second group, the inflammatory response to prosthesis implantation was 1,3 times lower on the third day, 1,2 times lower on the 7th day, and 1,1 times lower on the 10th day, than in the first group. Fibroblastic response, on the contrary, has increased into 1,2 times on the third day, into 1,14 during the 7th day and into 1,18 during the 14th day after the introduction of autoplasma. The thickness of the connective tissue capsule in the second group was 1,57 times higher than in the first group on the 21st day of the experiment. At this time, in the first group, the immature connective tissue capsule has been represented by the loose collagen fibers and fibroblastic cells without separation into the layers. In the second group, a dense connective tissue frame has been formed by the mature collagen fibers arranged compactly and in parallel to each other. The layer-by-layer structure of the capsule is well expressed: the inner layer consists of the fibroblastic cells, and the outer layer consists of the mature collagen fibers. Conclusion. The use of platelet-rich plasma to stimulate reparative processes in the implantation of the lightweight polypropylene prosthesis in the abdominal wall is pathogenetically justified and effective.

scholarly journals Macroscopic and microscopic study of the mandibular salivary gland of Black Bengal goats

1970 ◽  
Vol 2 (2) ◽  
pp. 137-142 ◽  
Author(s):  
SMA Rauf ◽  
MR Islam ◽  
MK Anam
Keyword(s):  
Salivary Gland ◽  
Connective Tissue ◽  
Average Length ◽  
Gross Anatomy ◽  
Mandibular Gland ◽  
External Carotid ◽  
Ventral Part ◽  
Caudal Part ◽  
Connective Tissue Capsule ◽  
Tissue Capsule

The gross anatomy and microscopic structures of the mandibular salivary gland of 15 Black Bengal goats of either sex and different ages were carried out during the period from January 1999 to December 2000. The mandibular salivary gland was irregularly triangular in shape and was situated ventral and caudal part of the angle of the mandible and partly covered by the ventral part of the parotid gland. The gland was cream colored in fresh condition and the lobules were coarser and less compact in texture. The   mandibular duct left the gland near the middle of the cranio-dorsal border and opened into the caruncula sublingualis with the sublingual duct in common. The average length of the duct was 11 cm. The branches of external carotid, lingual and occipital arteries supplied the mandibular salivary gland. The mandibular gland was drained by the lingofacial and lingiual veins and occasionally by the laryngeal vein. It was mixed tubulo-alveolar gland and consisted to numerous lobes and lobules; supported by connective tissue capsule. The mixed alveoli were more than the isolated serous and mucous alveoli.Key words: Mandibular salivary gland; macroscopic, microscopic; Black Bengal goatsdoi: 10.3329/bjvm.v2i2.2556Bangl. J. Vet. Med. (2004). 2 (2): 137-142

Development of the notochord in the Japanese medaka, Oryzias latipes (Teleostei; Cyprinodontidae), with special reference to desmosomal connections and functional integration with adjacent tissues

1991 ◽  
Vol 69 (5) ◽  
pp. 1171-1177 ◽  
Author(s):  
Sunetra Ekanayake ◽  
Brian K. Hall
Keyword(s):  
Connective Tissue ◽  
Functional Integration ◽  
Vertebral Bone ◽  
Cellular Basis ◽  
Structural Integration ◽  
Axial Muscles ◽  
Connective Tissue Capsule ◽  
Periosteal Cells ◽  
Developmental Analysis ◽  
Tissue Capsule

We describe development of the notochord from stage 28 (appearance of fin folds) to stage 35 (5 days after hatching). Beginning immediately after hatching (stage 32), the notochord, vertebral bone, and axial muscles develop as a structural unit. Integration of this unit is effected by (i) the appearance and maturation of desmosomes with cytoplasmic plaques and tonofilaments, (ii) the deposition of vertebral bone at stage 32, and (iii) integration of the periosteum with the connective tissue capsule of the axial muscles. Desmosomes connect notochordal cells with one another and with cells of the notochordal epithelium. Extracellular matrix integrates bone with inner notochordal epithelium, periosteal cells with one another, and periosteum with the muscle connective tissue capsules. Therefore, development of desmosomes and deposition of extracellular matrices, beginning at stage 28, provide the cellular basis for the structural integration of notochord, bone, and muscle. Onset of structural integration immediately precedes the first vigorous movement that occurs at stage 29. This developmental analysis has therefore identified the cellular basis of the structural and functional integration of the axial locomotory tissues. Such an approach provides a means of understanding the developmental basis of functional morphology.

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