• 한국수산과학회지
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• 제32권5호
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• pp.642-648
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• 1999

감성돔, Acanthopagrus schlegeli의 소화관은 식도, 위, 장, 항문 그리고 위의 유문부 말단에서 유래한 4$\~$5개의 맹낭 형태인 유문수로 이루어져 있었다 어체 체장에 대한 식도에서 항문까지의 소화관 길이의 비 (RLG: relative length of gut)는 1.04(n=10)였다. 소화관의 조직층은 장막, 근육층, 점막하층, 점막층으로 구성되는데, 점막하층의 발달은 전체적으로 매우 미약했다. 식도 점막주름의 형태는 규칙적인 분지형이었으며, 점막근층은 아주 잘 발달되어 있었다. 점막상피층은 입방형 또는 원주형 상피세포와 점액분비세포로 구성되며, 상피세포의 자유면에서 미세융모의 관찰은 어렵다. 위점막주름의 형태는 규칙적인 미분지형이며, 위의 근육충과 점막근층은 잘 발달되어 있었다. 점막충의 표면상피에서는 미세융모가 관찰되며, 위선과 분비과립은 체부에서 가장 잘 발달되어 있었다 유문수와 장의 점막주름은 불규칙한 분지형이다 장은 점막주름의 길이와 조직학적인 특징에 의해 전장부, 중장부, 후장부의 구분이 가능하였다. 유문수와 장의 선조연과 배상세포는 후장부에서, 영양분흡수세포는 중장부에서 가장 발달된 양상을 보였다.

• 셀메드
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• 제13권7호
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• pp.27.1-27.4
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• 2023

Objective: To report a case of improvement in atrophic gastritis using cell correction nutritional therapy. Methods: A 67-year-old Korean female with impaired digestive function and symptoms of abdominal bloating and hypochlorhydria. Results: Following the application of nutritional therapy, the severity of symptoms was alleviated, ultimately resulting in a complete resolution of atrophic gastritis. Conclusion: Nutritional therapy may be beneficial in alleviating symptoms and aiding in the treatment of patients presenting with atrophic gastritis symptoms.

• Environmental Analysis Health and Toxicology
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• 제22권2호통권57호
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• pp.119-128
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• 2007

The present study was conducted to find out effect of PFOS on survival, activity, growth and organ structure of the melania snail, Semisulcospira gottschei. Experimental groups were composed of one control condition and four PFOS exposure condition (0.1, 0.5, 1.0 and 5.0 mg/L). After 16 week exposure, survival rate and activity were not significantly influenced at the two lower exposure groups, 0.1 and 0.5 mg/L, but they were significantly reduced in 1.0 and 5.0 mg/L groups. Total weight and meat weight rate (MWR) were reduced in PFOS exposure group in comparison to control group. Also, histological degenerations such as acidification of mucous, necrosis and split of muscular fiber bundle, atrophy of anterior pedal gland were recognized in the foot. Hepatopancreas showed the atrophy and degeneration of the digestive cell, vacuolation of digestive gland and closure of lumen in digestive gland.

• Asian-Australasian Journal of Animal Sciences
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• 제18권4호
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• pp.524-531
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• 2005

Two experiments were conducted to standardize in ovo injection of amino acids (AA) and to evaluate the effect of in ovo injection of limiting AA(s) on pre and post hatch growth performance, immune response and development of digestive organs. Combinations of essential and non-essential amino acids (Lys+Arg, Lys+Met+Cys, Thr+Gly+Ser, Ile+Leu+Val and Gly+Pro) were injected into 50 eggs in each treatment group at 14 d of embryonic age. Standardization of injection site, needle length and embryonic age revealed that when AA were injected in to the broad end of the egg with a 11 mm needle and at the narrow end with a 24 mm needle both at the 7$^{th}$ and 14$^{th}$ d of incubation there was poor hatchability. However, better hatchability was recorded when the AA were injected in the narrow end of the egg with a 11 mm needle and in the broad end with a 24 mm needle on the 14$^{th}$ d of incubation. The chick to egg weight ratio was higher (p<0.018) when AA were injected on the 14$^{th}$ d of incubation. When a combination of amino acids were injected a 63.6 or 63.2 g difference in body weight of bird at 21 d was recorded between uninjected control and Ile+Leu+Val or Gly+Pro group, respectively. Higher feed intake (p<0.047) was recorded in the AA injected groups and feed conversion ratio (FCR) was numerically better in Gly+Pro, Lys+Met+Cys AA injected groups than in the uninjected control. Significantly higher immune response to cell mediated (p<0.033) and humoral (p<0.002) immunity was observed in in ovo amino acid injected birds, especially in Lys+Met+Cys, Thr+Gly+Ser or Ile+leu+Val groups. The digestive organ weights at 21 d did not differ between specific AA injected groups and the uninjected control. In ovo injected amino acids may act as immunomodulators and their role in gastrointestinal development needs further research.

• 한국패류학회지
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• 제29권1호
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• pp.33-41
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• 2013

본 연구는 지중해담치, Mytilus galloprovincialis의 체내 중금속 농도, 이성생식세포 발현과 소화선의 조직학적 지표 변화를 이용하여 이들의 안정성을 알아보고자 하였다. 시료는 2010년 5월 한국 남해안의 가막만 2곳에서 채집하였다. 금속이온의 체내 축적 농도는 분석된 10가지 금속 이온 가운데 Al이 가장 높았으며, 두번째로 Zn이 높았다. 그리고 Co가 가장 낮은 농도로 나타났다. 이성생식세포 발현율은 26.4%로 나타났으며, 수컷에서 더 높았다. 이성생식세포 발현 형태는 네 가지 형태가 관찰되었다. 조직학적 지표는 소화선의 조직학적 변화, 호염기성세포와 지방갈색소의 분포비율을 이용하였다. 소화선에서는 소화선세관 상피층의 파괴가 가장 높은 비율로 나타났다. 호염기성세포의 분포 비율은 6.1%로 나타났고, 지방 갈색소 분포 비율은 1.5%였다.

• Gut and Liver
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• 제12권6호
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• pp.722-727
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• 2018

Background/Aims: Although endoscopic bilateral stent-instent placement is challenging, many recent studies have reported promising outcomes regarding technical success and endoscopic re-intervention. This study aimed to evaluate the technical accessibility of stent-in-stent placement using large cell-type stents in patients with inoperable malignant hilar biliary obstruction. Methods: Forty-three patients with inoperable malignant hilar biliary obstruction from four academic centers were prospectively enrolled from March 2013 to June 2015. Results: Bilateral stent-in-stent placement using two large cell-type stents was successfully performed in 88.4% of the patients (38/43). In four of the five cases with technical failure, the delivery sheath of the second stent became caught in the hook-cross-type vertex of the large cell of the first stent, and subsequent attempts to pass a guidewire and stent assembly through the mesh failed. Functional success was achieved in all cases of technical success. Stent occlusion occurred in 63.2% of the patients (24/38), with a median patient survival of 300 days. The median stent patency was 198 days. The stent patency rate was 82.9%, 63.1%, and 32.1% at 3, 6, and 12 months postoperatively, respectively. Endoscopic re-intervention was performed in 14 patients, whereas 10 underwent percutaneous drainage. Conclusions: Large cell-type stents for endoscopic bilateral stent-in-stent placement had acceptable functional success and stent patency when technically successful. However, the technical difficulty associated with the entanglement of the second stent delivery sheath in the hook-cross-type vertex of the first stent may preclude large cell-type stents from being considered as a dedicated standard tool for stent-in-stent placement.

• 대한한방내과학회지
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• 제11권2호
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• pp.148-169
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• 1990

The Present experiment was designed to investigate the effects of Soo Jeom San on the function of heart and digestive organs. And thus it was analyzed the total acidity, recovery effect, and the other various enzyme activities such as ATPase, Creatine kinase, Aspartate transaminase, and Lactate dehydrogenase. The results were obtained as follows : 1. The Total acidity decreased after Soo JeomSan administration for 6 days, however the total acidity inoreased after the drug administration for 9 days, these phenomena demonstrate that Soo Jeom San acts as a dual factor. The mechanism of decreasing the total acidity was considered to the inhibition of ATPase activity used for HCI active transport from parietal cells. 2. Soo Jeom San recovered the islets of Langerhans which was disrupted by streptozotocin. The recovery mechanism was suggested that Soo Jeom San stimulates the ${\beta}-cell$ proliferation. 3. Soo Jeom San inhibited the enzyme activities such as Creatine kinase and Aspartate transaminase, however the drug activated Lactate dehydrogenase. According to the obtained results, Soo Jeom San may be used for curing gastric ulcer and myocardiac infarction.

• Asian-Australasian Journal of Animal Sciences
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• 제13권9호
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• pp.1219-1227
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• 2000

Rumination behavior, in vivo digestibility of cell wall constituents, particle size reduction in the rumen, and retention time in the digestive tract of sheep were examined using rice and oat straw as roughage sources. The in sacco digestibility, rumen fermentation, and microbial population and internal adenosine 5-triphosphate (ATP) content were also determined under feeding conditions of high-roughage and high-concentrate diets. Chewing number and time in rumination behavior were higher with rice straw than with oat straw, while the in sacco and in vivo DMD of rice straw were consistently lower than those of oat straw. Rice straw also showed higher frequency of thinner and longer particles in the rumen contents and lower retention time in the whole digestive tract as compared to those of oat straw. Rice straw was more effective to maintain the ruminal pH than oat straw, being reflected in higher internal ATP content of large-type protozoa on the high- concentrate diet. Changes in the ruminal microflora by shifting from the low- to the high- concentrate diet were also different between rice and oat straw.

• 한국패류학회지
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• 제31권2호
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• pp.151-158
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• 2015

본 연구는 구리에 노출된 꼬막, Tegillarca granosa의 생존율, 호흡율 및 기관계의 반응을 알아보고자 하였다. 실험기간은 4주였으며, 실험구는 대조구와 구리 노출구 3개 (0.125, 0.250 and 0.500 mg/L) 였다. 실험 결과 구리는 꼬막의 생존율과 호흡률의 저하 및 기관계의 조직학적 변성을 유도하는 것이 확인되었다. 노출 종말점에서 0.500 mg/L의 구리 노출구에서 사망률은 66.7%였으며, 호흡률은 대조구에 비해 18.2%로 감소하였다. 기관계의 조직학적 분석 결과, 외투막 상피층과 결합조직층의 변성, 아가미 새엽 상피세포의 위축과 측면섬모의 소실, 발에서는 상피층의 붕괴, 점액의 산성화 및 혈림프동의 확장과 근섬유 다발의 변성을 나타냈다. 소화맹낭의 소화선세관에서는 호염기성세포와 상피세포의 위축 및 붕괴가 확인되었다.

• 생명과학회지
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• 제27권9호
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• pp.1040-1046
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• 2017

우리는 처음으로 쌍별귀뚜라미 소화기관에서 6종류의 미생물을 분리하고 특성을 규명하였다. 이들은 16S rDNA을 기준으로 분류한 결과 4종류(Staphylococcus, Bacillus, Citrobacter, Proteus)에 속하였다. 분리된 6종류의 미생물은 공통적으로 ampicillin에 저항성을 보이지만 kanamycin 저항성은 보이지 않았다. 이들을 Gram염색하여 미생물의 형태적 특징을 확인하였다. Gram-positive한 rod-shaped GL2와 round-shaped GL4는 다른 분리 균 보다 많은 양의 세포외분비물을 만들었다, 이들을 MALDI-TOF-MS spectral analysis결과 87-kDa collagenase, 56-kDa & 200-kDa hypothetical protein이였다. 새롭게 분리된 6종류의 미생물은 귀뚜라미의 생리에 미치는 영향과 이들의 생물공학적 혹은 해충 방제에 이용될 수 있는 연구가 기대된다.