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Volume 75 (1998 - 199･･･
- Issue 6 Pages 263-
- Issue 5 Pages 217-
- Issue 4 Pages 163-
- Issue 2-3 Pages 61-
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Volume 75, Issue 2-3
Displaying 1-9 of 9 articles from this issue
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GÜNAY Yasemin, Hüseyin Eray BULUT, ONARLIOGLU Bilge, BASIMOG ...1998 Volume 75 Issue 2-3 Pages 61-69
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe effects of cryptorchidism, one of the most important congenital malformations resulting with the defects in testicular structure thus infertility, is the best known subject in male reproduction. Those best known effects make the usage of cryptorchidism as a second control criteria when the effects of other male infertility reasons are attempted to be determined. Therefore the persistency or reversibility of the effects of vasectomy on testicular structure have been compared to the testicular features following experimental cryptorchidism and to the control group findings. To do this, rats were divided into 3 groups. While the control group animals were sham operated, the experimental group animals were undergone either vasectomy or experimental cryptorchidism procedures. Testicular histology of the control and experimental groups was determined using convenient staining methods at the light microscopical level.
The comparison of the findings from the control and experimental groups showed that the testicular features of the vasectomized group were similar to those seen in the control group in contrast to the experimental cryptorchidism group which had irreversible testicular alterations. Results of the present study indicated the convenience of the usage of vasectomy in male contraception.View full abstractDownload PDF (3007K) -
KOPTAGEL Emel, BULUT Hüseyin Eray1998 Volume 75 Issue 2-3 Pages 71-86
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSHydrocarbons used as solvents in industry are thought to have effects on respiratory system. However, its effect on tracheal morphology and function is poorly investigated. Therefore the present study attempted to investigate the rat tracheal structure following different types and concentrations of hydrocarbon exposure. To do this,65 Swiss albino rats were divided into 6 groups. While control group animals were undergone no treatment,5 experimental group animals received different types of hydrocarbons saturated in air, such as 1,2-dibromoethane,1,1,1-trichloroethylene, naphthalene, carbontetrackloride and carbonsulphide at 1,3 and 6 hour intervals in isolated chambers. Control group consisted of 5 rats whereas the experimental groups contained 60 rats (12 for each group). Tracheal tissue samples were collected from the control and experimental group animals, and were processed for light microscopy. Tracheal morphology underwent distinct alterations after 1,3, and 6 hours of hydrocarbon exposure. Common tracheal features for all experimental groups were a thinner epithelial layer along with occasional exfoliation, hyparemic and dilated vasculature with intraluminal haemorage, and inflammatory cell infiltration into the underlying connective tissue. Tracheal glands taking place in the lamina propria seemed to be increased following several hydrocarbon exposure. In conclusion, it may be postulated that the hydrocarbons used in the present study cause irreversible tracheal alterations. Therefore one must take extreme caution when these toxic compounds are used.View full abstractDownload PDF (7056K) -
M. Hamit CELIK, Mustafa F. SARGON, H. Hamdi CELIK1998 Volume 75 Issue 2-3 Pages 87-95
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe mandibular condyles of 30 cadavers were examined bilaterally. The greatest medial-lateral lengths and greatest anterior-posterior widths of these condyles were measured with a millimeter caliper. The mean size of the greatest medial-lateral length of the superior surface of the condyle between males and females was significantly different. On the other hand, the mean size of the greatest anterior-posterior width of this surface between males and females was not significant. In gross anatomic examination,28 of the 60 condyles (46.6%) had a convex articulating surface without having any surface irregularities. However,32 of the 60 condyles (53.4%) demonstrated irregular articular surfaces with characteristic flattening and eburnation. Half of these surface irregularities were found in the lateral part and a few of them were located in the medial part and superior surface of the condyles. Short, irregular undulations, surface depressions and sharply demarcated microcraters were observed in the SEM examination of mandibular condyles having macroscopic abnormalities. These osseous abnormalities were present in the mandibular condyles of people, who were over the age of 50 years and they were very prominent especially in the ones who were completely edentulous. Therefore remodeling of the articular surface might occur in response to alteration of functional forces within the joints of these aged individuals.View full abstractDownload PDF (1965K) -
Kwang-Soo HAN, Yasutomo IWAI-LIAO, Yoshikage HIGASHI1998 Volume 75 Issue 2-3 Pages 97-109
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSOrganogenesis, Pituitary gland, Mouse Summary: The mouse foetal hypophysis which contains the diencephalic downgrowth (Dd) and Rathke's pouch (Rp)was examined using morphological and immunocyto/histo-chemical methods to study the cell-cell and cell-extracellular matrix (ECM) interactions that occur during early organogenesis. While many studies have described that the differentiation of ACTH cells precedes the proliferation of other endocrine cells in the Rp, light and conventional transmission electron microscopic (TEM) investigations have failed to differentiate between the various endocrine cell types in the proliferating distal lobe at the late mid-foetal stage. Conversely, TEM studies have shown that the occurrence of dense secretory vesicles in glandular cells of the presumptive pars intermedia in dose apposition with the presumptive neural lobe by a basal lamina, is the earliest sign of endocrine activity in the foetal hypophysis. However, a confocal laser scanning microscopy (CLSM) and fine structure study did not observe direct cell-to-cell contacts between the Dd, Rp and their associated mesenchyme at the late mid-foetal stage. Using CLSM and TEM, we detected active cell turnover with programmed cell death in the proliferating Rp, Dd and their associated cephalic mesenchyme. Morphological findings indicated that apoptosis in the cephalic mesenchyme subsequently brings neurohypophyseal pituicytes and adprecursor stem cells into closer proximity, and alternations in the boundary cell surfaces might initiate signal transduction mediated via the intervening ECM at the proliferation stage.View full abstractDownload PDF (4446K) -
Tsugane MH, Murakami G, Yasuda M1998 Volume 75 Issue 2-3 Pages 111-117
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSMuscle slip composition and innervation was minutely examined in the case of the scalenus anterior muscle lying behind the 5th cervical nerve root. This minor change of topography deeply involved the muscle-nerve relationships of the entire muscle. Critical observations were as follows: (1) lower and unusual origins of the muscle; (2) irregular innervation with regard to the nerve elements and their approach to the muscle. This evidence suggested that abnormal migration, splitting and fusion of the muscle anlage had occurred during the development of the variant.View full abstractDownload PDF (952K) -
Qiang XIE, Takanori MIKI, Masahiro ITOH, Yoshiki TAKEUCHI1998 Volume 75 Issue 2-3 Pages 119-129
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe brainstem projections of sensory fibers of the lung were determined in the rat by using the horseradish peroxidase (HRP) and c-fos immunohistochemical methods. Wheat germ agglutinin conjugated HRP (WGA-HRP)was injected into the parenchyma of the upper lobe of the left lung. This injection resulted in anterograde labeling in the nucleus of the tractus solitarius (NTS), area postrema (AP) and external cuneate nudeus (ECu) with slightly ipsilateral predominance. It was of interest that these labeled sensory fibers are heavily accumulated in the medial subnucleus at the rostral pole of the NTS and in the commissural subnucleus at the caudal pole. In particular, labeled fibers in the medial subnucleus were characterized by division into the ventral and dorsal portions. After formalin was injected into the parenchyma of the upper lobe of the left lung, the expression of c-fos-like immunoreactivity (FOS-LI)was observed in three nuclei of the brainstem mentioned above. In addition, this experiment resulted in the expression in the ventrolateral medulla, nucleus raphe pallidus and dorsal motor nucleus of vagus nerve bilaterally. With respect to the number of the immunoreactive cells, we could draw the conclusion that the most optimum time to induce the expression of FOS-LI is between 1.5 h and 2.0 h after noxious stimuli.View full abstractDownload PDF (3498K) -
Jae-Goo KIM, Yasutomo IWAI-LIAO, Yoshikage HIGASHI1998 Volume 75 Issue 2-3 Pages 131-139
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSMorphological and immuno/histochemical studies were performed on the vestibular lamina (VL) of gestational day 13 murine fetuses, usinglight microscopy (LM), confocal laser scanning microscopy (CLSM) and transmission electron microscopy (TEM), in an effort to elucidate the early development of the oral vestibule. Histochemistry employing LM demonstrated some PAS-positive glycogen particles in embryonic cells of the VL, dental lamina (DL), the primary epithelial band connecting the VL and DL, and the related stomodaeal simple epithelium. On the other hand, Gomori's aldehyde fuchsine method stained certain cystine-containing intracellular granules and intercellular amorphous substances, particularly in the central VL. Intense immunoreactivity for CK-10 intermediate-sized filament proteins was demonstrated in suprabasal and superficial cells of the VL stratified keratinized epithelium. Conversely, reactions for CK-19 filaments were found diffusely in both VL and DL cells retaining the cytokeratin characteristic of the simple epithelium. TEM of the VL revealed an increment in keratinosomes, tonofilaments and desmosomes in the suprabasal layers shifting toward superficial flat parakeratinized cells. The TUNEL method using CLSM detected programmed cell death in the VL, while TEM provided no morphological evidence of necrosis or typical apoptotic features during VL development. The present results indicate that physiological (naturally occurring)cell death and exfoliation of the oral-gingival type multilayered keratinizing epithelium are essential for degeneration and separation of the VL, ultimately leading to formation of the oral vestibule.View full abstractDownload PDF (3153K) -
Kishiko YOSHIDA-TERASAWA, Daisuke HAYAKAWA, Huayue CHEN, Shoichi EMURA ...1998 Volume 75 Issue 2-3 Pages 141-153
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe ultrastructure of the parathyroid gland and ultimobranchial gland of the snake, Elaphe quadrivirgata, was studied.
The parenchyma of the parathyroid gland was consisted of chief cells arranged in cords. Oxyphil cells and waterclear cells were not recognized. The chief cells contained irregular shaped nudeus, moderately-developed mitochondria, granular endoplasmic reticulum and Golgi complexes. A few secretory granules of 100-300 nm in diameter distributed in the cytoplasm. Small aggregations of glycogen particles and lipid droplets were dispersed widely in the cytoplasm.
The ultimobranchial glands consisted of follides and interfollicular aggregates of C-cells. Follicles were invaginated and composed of C-cells, goblet cells and ciliated cells. C-cells were located in the basal position of the follicle and possessed variety of secretory granules of 100-300 nm in diameter in the basal region of the cell. C-cells presented various secretory cycles. Goblet cells projected microvilli into follicular lumen. At the apical region the goblet cells had large granules of 300-1,200 nm in diameter. Ciliated cells projected cilia intermixed with micovilli from the apical surface of the cell into the follicular lumen.View full abstractDownload PDF (4555K) -
A Study by MRIMine ERBIL, Selda ÖNDEROGLU, Nuran YENER, Meserret CUMHUR, Ayenur ...1998 Volume 75 Issue 2-3 Pages 155-162
Published: August 20, 1998
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSVariations in localization of the central sulcus and the sulci around the central sulcus namely the superior frontal sulcus, precentral sulcus, postcentral sulcus, marginal ramus of cingulate sulcus were studied in vertex sections retrospectively by magnetic resonance imaging (MRI) method in 3580 cases. Out of total number of cases,1000 who did not show any macroscopic intracranial pathology were carefully selected for research. Additionally,0-1 age group was excluded from the study because the sulci develop in first year of postnatal life, excluding the possibility of considering these as anatomical variations. Thus, the total number of cases is decreased to 990.
16 variations related to localization of the superior frontal sulcus, precentral sulcus, central sulcus, postcentral sulcus and the marginal ramus of the cingulate sulcus were identified. The asymmetries of the sulci, the most variable sulci and the distribution of the variations according to sex were statistically analysed.View full abstractDownload PDF (2147K)
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