• 한국어류학회지
• /
• 제18권1호
• /
• pp.27-35
• /
• 2006

한국산 칼납자루의 암컷은 산란시기가 되면 배지느러미 기부 부근에 돌출되어 신장되어 나타나는 배측융기가 형성된다. 이러한 배측융기는 직장(항문)부분과 내측산란관으로 구성되었다. 직장은 점막층, 점막하층, 근육층과 이들을 둘러싸는 다층의 표층으로 구성되어 있으며 특히 점막층에는 산성 점액다당류인 점액세포가 존재한다. 한편 내측산란관은 직장과 비슷한 구조를 가지고 있으나 점막층에는 점액세포가 존재하지 않는 특징을 보였다. 한편 외측산란관은 배측융기와 연결되지 않아 가늘고, 긴 관의 형태를 보이고 있으나 내측산란관과 달리 근육층이 존재하지 않아 점막층, 점막하층, 다층의 표피층으로 구성되어 있다. 이러한 결과로 보아 근육층을 가지는 내측산란관은 성숙란을 외측산란관으로 내보기 위해 연동운동과 관련있는 반면에 외측산란관은 근육층이 존재하지 않아 내측산란관으로부터 방출된 성숙란을 단지 이매패 속으로 전달하는 단순한 관의 역할을 하는 것으로 생각된다.

• Journal of Veterinary Science
• /
• 제23권6호
• /
• pp.88.01-88.14
• /
• 2022

Background: The olfactory mucosa (OM) is crucial for odorant perception in the main olfactory system. The terminal carbohydrates of glycoconjugates influence chemoreception in the olfactory epithelium (OE). Objectives: The histological characteristics and glycoconjugate composition of the OM of Korean native cattle (Hanwoo, Bos taurus coreae) were examined to characterize their morphology and possible functions during postnatal development. Methods: The OM of neonate and adult Korean native cattle was evaluated using histological, immunohistochemical, and lectin histochemical methods. Results: Histologically, the OM in both neonates and adults consists of the olfactory epithelium and the lamina propria. Additionally, using periodic acid Schiff and Alcian blue (pH 2.5), the mucus specificity of the Bowman's gland duct and acini in the lamina propria was determined. Immunohistochemistry demonstrated that mature and immature olfactory sensory neurons of OEs express the olfactory marker protein and growth associated protein-43, respectively. Lectin histochemistry indicated that numerous glycoconjugates, including as N-acetylglucosamine, mannose, galactose, N-acetylgalactosamine, complex type N-glycan, and fucose groups, were expressed at varied levels in the different cell types in the OMs of neonates and adults at varying levels. According to our observations, the cattle possessed a well-developed olfactory system, and the expression patterns of glycoconjugates in neonatal and adult OMs varied considerably. Conclusions: This is the first study to describe the morphological assessment of the OM of Korean native cattle with a focus on lectin histochemistry. The findings suggest that glycoconjugates may play a role in olfactory chemoreception, and that their labeling properties may be closely related to OM development and maturity.

• 한국어류학회지
• /
• 제17권4호
• /
• pp.241-247
• /
• 2005

왕종개 Iksookimia longicorpa의 공기호흡에 관한 호흡체계를 조사하기 위해 표피 (epidermis)와 소화관 (intestinal tract)를 관찰하였다. 표피는 작은 점액세포 (mucous cell)와 곤봉세포 (club cell)로 이루어진 두 종류의 선세포 (gland cell)을 가진다. 점액세포는 대부분 acid sulfomucin으로 구성되었으나 곤봉상세포는 점액물질에 대한 어떠한 반응도 보이지 않았다. 기저층에는 작은 림파구를 포함하는 lymphocytes가 존재하며, 다량의 모세혈관이 기저층 바로 아래부분에 존해하고 있다. 장( intestinal tract)은 거의 일직선형태이며, 크게 장(intestine)과 직장(rectum)으로 구성된다. 이러한 장은 점액층 (mucosa), 점막하층 (laminal propria-submucosa), 근육층 (musculary), 장막 (serosa) 층으로 구성되었다. 이러한 장은 짧은 fold와 얇은 벽으로 구성되었으며, 점막층은 acid sulfomucin의 점액을 가지고 있다. 공기호흡하는 어류들의 변형된 공기호흡 기관의 특징들과 비교해 볼 때 왕종개는 하천의 가뭄으로 인해 용존산소가 부족할 경우 장에서는 이루어지지않고 표피에서만 공기를 흡입하는 것으로 생각된다.

• Clinical and Experimental Reproductive Medicine
• /
• 제30권2호
• /
• pp.127-133
• /
• 2003

Objective: The aim of this study was to investigate the morphological aspects of testicular tissue before and after freezing-thawing by light and transmission electron microscopy. Methods: Tissue biopsies were carried out on mouse testis for freezing. Samples in medium containing 20% glycerol were frozen by computer-controlled freezing program. The effect of freezing-thawing on the structural change of testicular tissues were examined by light and electron microscopy. Results: The freezing-thawing procedure had no significant effect on tubular diameter. However, it caused folding of the lamina propria, and notable damage to Sertoli cells, spermatogonia and spermatocytes. The cells were detached, desquamated from the basal lamina and had increased vacuolization. Round spermatids, elongated spermatids and spermatozoa were less affected, and most of them maintained their normal structure. Conclusions: The structure of spermatogonia, spermatocyte and basal compartments in seminiferous epithelium was significantly altered by freezing-thawing procedure of mouse testicular tissues. Thus, we need to develop a more reliable method for the cryopreservation of testicular tissues.

• Parasites, Hosts and Diseases
• /
• 제35권3호
• /
• pp.181-188
• /
• 1997

닭에 있어서 닭와포자충 갉염이 면역반응에 미치는 영향을 규명하기 위한 기초적 연구리 일환으로 파브리시우스낭의 병리조직학적 소견을 경시적으로 조사하고자 150마리의 2일령 SPF 병아리 (Drkalb-Warren, Sex-Sal-Link)에 닭와포자충의 오오시스트 $5{\;}{\times}{\;}10^5$를 한 번에 경구투여하였타. 분변 속의 오오시스트 배설양상은 정상적이었으며. 파브리시우스낭 지수는 전 실험기간에 걸쳐 거의 변동이 없얹다 많은 수의 원충체가 접종 후 4-16일에 이 낭상피의 미세융또 가장자리에서 관찰되었으며 많은 수의 비만세포가 출현한 다음 원충체가 급격하게 소실하염다. 원충체의 분포상황과 상피 및 인접점막 고유층의 위호산구 침윤은 일치하였다. 이 병소는 상피. 인접 점막고유층의 위호산구 침율과 점만상피 증식을 동반한 미만성 만성 표재성 화농성 파브리시우스낭영의 병리조직학적 소견이었다 이러한 파브리시우스낭염은 면역억제를 유발할 건으로 생각된다.

• 대한임상검사과학회지
• /
• 제37권1호
• /
• pp.41-46
• /
• 2005

It is known that mast cells (MCs) are increased in H. pylori-infected gastritis and its increase is mediated by stem cell factor (c-kit ligand). To determine the mechanism of mast cell recruitment and activation by stem cell factor, weinvestigated the expression of stem cell factor receptor (c-kit) in H. pylori-positive and -negative gastric mucosa. Biopsy specimens from 16 H. pylori-negative and 20 positive subjects were examined. H. pylori infection in gastric mucosa was examined by the Warthin-Starry method. MC and c-kit were identified by immunohistochemisty, using a monoclonal antihuman MC tryptase antibody and a polyclonal anti-human c-kit antibody. Densities of MC and c-kit positive cell were measured by a computerized image analysis system. MCs were detected in the lamina propria of both H. pylori-positive and -negative gastric mucosa. Densities of MC and c-kit positive cell were significantly greater in H. pylori-positive than -negative subjects. c-kit was located on the surface of MCs. These results indicate that stem cell factors may be one of the factors involved in mast cell increase and that they activate mast cells by binding with c-kit.

• Asian-Australasian Journal of Animal Sciences
• /
• 제21권4호
• /
• pp.567-573
• /
• 2008

This experiment examined the effect of dietary spray-dried bovine colostrum on intestinal histology and organ weights in early-weaned pigs. In a randomised complete block design, twelve 14-day-old weaner pigs were offered a diet containing either 5% spray-dried bovine colostrum or no colostrum (control). Diets were formulated to contain 14.8 MJ/kg DE, 1.26% available lysine and to meet or exceed requirements for other nutrients. Piglets were offered the diets for a period of 14 days. No effect of diet on growth rate or feed intake was observed (p>0.10). Small intestine weight was reduced by 12% in piglets consuming dietary bovine colostrum (p< 0.05). Villous height and crypt depth were increased and decreased, respectively, in the proximal jejunum, mid jejunum and distal ileum of pigs consuming dietary bovine colostrum (p<0.05). Mid-jejunal lamina propria $CD4^+$ and $CD8^+$ T lymphocyte density was increased by 28 and 37%, respectively, in piglets consuming dietary bovine colostrum (p<0.05). Diet did not affect thickness of tunica muscularis externa or tunica submucosa (p>0.10). Collectively, these results suggest a positive effect of dietary bovine colostrum on intestinal morphology and immune status in early-weaned pigs.

• 대한수의학회지
• /
• 제29권3호
• /
• pp.231-237
• /
• 1989

Morphological features of the vomeronasal organ of both Korean native cattle and Korean native goat were studied by gross, microscopic and histochemical examinations. Anatomical characteristics of the vomeronasl organ were similar in both Korean native cattle and Korean native goats. The vomeronasal organ is a tubular structure situated bilaterally at the base of the nasal septum, and enclosed by hyaline cartilage. Its lumen is semilunar to crescent in transverse sections. It join with the incisive duct through narrow duct. The lumen of the vomeronasal organ is lined with sensory and respiratory epithelia. The distribution pattern of vomeronasal mucosal epithelia varied by the position. In the anterior portion joining with nasal cavity, the lumen is lined with only respiratory epitheliu. In the middle portion, sensory epithelium appeared on the medial side, and respiratory epithelium on the lateral side. In the posterior, it is lined with sensory epithelium on the ventral side and lined with respiratory epithelium on the dorsal side. The vomeronasal gland composed of mucous and serous acini are distributed in the lamina propria under the respiratory epithelium, where venous sinuses are also well developed.

• 대한수의학회지
• /
• 제36권2호
• /
• pp.265-276
• /
• 1996

This study was performed to identify the localization of several neuropeptides; calcitonin gene-related peptide(CGRP), substance P(SP), vasoactive intestinal polypeptide(VIP), neuropeptide Y(NPY), serotonin(5-HT) and neurotensin in the tongue of Korean native goat(Capra hircus) by immunohistochemical method. The results were summarized as follows: CGRP- and SP-immunoreactive fibers were observed as moderate immunoreactivity at the subepithelial plexus and subgemmal fibers in lamina propria of lingual papillae, but not seen in intragemmal, intergemmal, perigemmal fibers as well as in the supporting, basal and taste cells. Fibers around the acinus of the von Ebner's gland and blood vessels showed weak immunoreactivities against CGRP and SP. In the intrinsic ganglion cells, CGRP- and SP-immunoreactivities were not observed. The distribution patterns of VIP- and NPY-immunoreactive fibers were similar to CGRP-or SP-immunoreactive fibers, but their immunoreactivities were stronger than those of CGRP- or SP immunoreactive fibers. The immunoreactivities to VIP or NPY were seen in the intrinsic ganglion. Only a few serotonin immunoreactive fibers were seen in some filiform or fungiform papillae. Neurotensin immunoreactivity was not observed in the tongue of Korean native goat.

• Journal of Oral Medicine and Pain
• /
• 제21권1호
• /
• pp.183-196
• /
• 1996

The author examined the clinical and histological changes on the dorsal tongue mucosa of adult Sprague-Dawley rats after lasing by pulsed Nd:YAG laser. The dorsal tongue was lased for 3 seconds by 1.5, 2.0, 2.5, 3.0, 3.5, 4.0W and 10, 15, 20, 20pps. After tissue changes were observed clinically, the excised samples were observed histologically and the width of tissue destruction was analyzed quantitatively under the Confocal laser microscope respectively. The following results were obtained : 1. Whitening of peripheral tissue was observed more as increasing pulsed per second (Hz) below power 2.5W and observed at all parameters above power 3.0W. 2. Charring of mucosal surface was observed at all parameters but mild at parameters below power 2.0W. 3. The destruction of epithelium was observed at all parameters and tissue destruction was extended to lamina propria at higher pulses per second. 4. The width of tissue destruction was more widening as increasing energies per pulse (p<0.001) and the narrowest at 20Hz than 10Hz, 15Hz and 30Hz(p<0.05). As the above results, author suggests power below-3.5W and 20Hz as the lasing parameters for oral soft tissue therapy.