• Asian-Australasian Journal of Animal Sciences
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• 제19권12호
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• pp.1799-1808
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• 2006

This study was designed to explore the effects of marbling on meat quality characteristics and intramuscular connective tissue of beef longissimus muscle. Chemical determinations, histological and mechanical measurements were performed on the raw and cooked meat at d 4 postmortem. The results showed that crude fat, collagen, fiber diameter and maximum transition temperature of intramuscular connective tissue increased (p<0.05) with the increase of marbling score. The cooking losses, collagen solubility, WBSF and perimysial thickness decreased (p<0.05) with the increasing marbling. WBSF correlated (p<0.05) with moisture, crude fat, collagen, cooking losses, sarcomere length and perimysial thickness. The development of marbling results in the decline in cooking losses, the avoidance of sarcomere shortening, and the disorganization of the perimysia, which accounts for the improvement of beef tenderness.

• Food Science and Biotechnology
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• 제14권5호
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• pp.667-671
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• 2005

The aim of this study is to investigate the effects of the muscle mass and fiber number on post-mortem metabolic rates and pork quality. Carcass traits, muscle fiber characteristics, and type of fiber composition were evaluated using a sample of 200 cross-bred pigs. The muscle mass was divided into two groups according to carcass weight and loin-eye area measurements (heavy or light). In addition, the muscle histological characteristics were divided into two groups according to the muscle fiber density and total number of muscle fibers (high or low). All the carcass traits were significantly different in the muscle mass groups. Increasing weight significantly affected the cross-sectional area (CSA) of all fibers. The low group, which had a low muscle fiber number indicating a larger CSA of fibers, and especially the heavy-low group had the highest CSA levels of fibers. The fiber number percentage and the area percentage were significantly different in the groups categorized by fiber number. The heavy-high group indicated a normal rate of pH decline and the R-value. In addition, pigs with a heavy muscle mass and high muscle fiber number indicated normal drip loss, lightness, and protein denaturation. The present results suggest that increasing the total muscle fiber number has a beneficial effect on increasing the muscle mass without deteriorating the meat quality.

• Journal of Korean Dental Science
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• 제10권2호
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• pp.60-65
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• 2017

Purpose: The purpose of this study is to analyze the clinical features of postoperative maxillary cyst (POMC) according to the patient's medical history of previous sinus operation and symptoms with radiological characteristics. Materials and Methods: The subjects of this study were 41 patients who had been diagnosed with POMC via clinical and histological examination from 2007 to 2016. Result: Thirty-five patients had medical histories of Caldwell-Luc procedures and four patients had maxillary sinus surgery, such as cyst enucleation and open reduction for maxillary bony fractures. From the computed tomography images, 25.6% (11/43) showed multilocular cysts and 74.4% (32/43) showed unilocular lesions. As for the treatment methods, cyst enucleation was conducted on 34 patients, and among them, three were treated previously with marsupialization. Their symptoms included diverse locations of pain and swelling. Conclusion: The clinical features of POMC varied from unilocular to multilocular and the symptoms included pain and swelling.

• 한국동물학회지
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• 제30권4호
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• pp.351-370
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• 1987

This experiment has been done in order to study the correlation between the ultrastructure changes and the atresia phenomenon of the follicles in porcine ovary. The ovaries were assorted according to the presence or absence of corpus luteum. Thereafter, the follicles were classified into normal, pyknotic, necrotic and cystic groups by atretic characteristics on the histological observation, and then their ultrastructures were examined with an electron microscope. The results were as followings. 1. In normal group, granulosa cells represented the ultrastructural characteristics of protein-synthesizing cells. Since the initiation of atresia, the line structure of granulosa cells showed many of the characteristic features of steroid-secreting cells, followed by gradual pyknosis. 2. In necrotic group of the ovary without corpus luteum, the theca interns became hypertrophic and displayed the ultrastructural features of active steroidsecreting cells. But this phenomenon was not seen in the follicles of the ovary with corpus luteum. 3. Degenerative changes of cumulus cells were similar to those of granulosa cells, and the degenerating oocytes showed the degeneration of cellular organelles, cytoplasmic vacuolization and disappearance of microvilli on the surface. The degeneration of granulosa cells tended to procede that of oocytecumulus complex in the follicles of the ovary having no corpus luteum, but this tendency was reversed in the case of presence of corpus luteum. In conclusion, it may be unable to identi(y the initiation of follicular atresia

• Tuberculosis and Respiratory Diseases
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• 제65권2호
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• pp.110-115
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• 2008

연구배경: CCAM은 드문 하부 호흡기의 선천성 발달 기형으로 대부분은 생후 2년 내에 진단되는 것으로 보고되고 있다. 그리고 매우 드물게 성인이 되어서 호흡기 합병증이 생기거나 무증상인 채로 우연히 진단된 증례들이 보고되었다. 우리는 본원에서 수술을 통해 조직학적 소견으로 확진된 6명의 성인 CCAM 환자들을 기술하였고 이들의 임상적, 방사선학적 및 조직학적 특성을 분석하고자 하였다. 방 법: 2001년 8월부터 2007년 2월까지 본원에서 성인기에 수술을 통한 조직학적 소견으로 확진된 6명의 CCAM 환자를 확인하였다. 의무기록 검토를 통해 그들의 인구학적 및 임상적 특성, 흉부 방사선 자료 그리고 조직학적 특성을 후향적으로 분석하였다. 결 과: 6명의 CCAM 환자 중 4명이 여자였고 진단 당시의 평균 나이는 23.5세(범위 18~39세)였다. 내원 당시 주요 임상 양상은 하부 호흡기 감염, 객혈, 그리고 기흉이었다. 흉부 전산화 단층촬영을 보면 5명의 환자는 공기 액체층을 동반한 다발성 격막을 가진 낭종성 병변을 가지고 있었고 나머지 1명에서는 우상엽에 공기 액체층을 동반한 다발성 공동성 병변과 주위에 다발성 침윤성 병변을 가지고 있었다. 모든 환자는 폐엽 절제 수술을 받았는데 5명은 개흉술을 통한 폐엽 절제술을 그리고 1명은 흉강경을 이용한 폐엽 절제술을 시행 받았다. 조직학적 검사결과 Stocker씨 분류법에 따라 3명의 환자는 1형 그리고 나머지 3명은 2형으로 분류되었다. 모든 환자의 검체에서 동반된 악성 종양의 증거는 없었다. 결 론: CCAM이 하부 호흡기 감염, 기흉, 객혈 등의 다양한 호흡기 합병증과 악성화를 일으킬 가능성이 있고 수술적 치료와 연관된 합병증이 거의 없기 때문에 CCAM으로 의심되거나 확실치 않은 폐의 낭종성 혹은 공동성 병변이 있을 때 정확한 진단과 적절한 치료를 위해서 반드시 수술적 치료가 필요하다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권5호
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• pp.2205-2210
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• 2014

Objective: To retrospectively review the clinical characteristics and analyze the prognostic factors of Chinese patients with pulmonary neuroendocrine tumors. Materials and Methods: The clinical data of 176 patients with pulmonary neuroendocrine tumors in Chinese PLA General Hospital from Mar., 2000 to Oct., 2012 were retrospectively analyzed. The parameters were evaluated by univariate and multivariate analysis, including the gender, age, smoking history, family history, TNM staging, localization (central or peripheral), tumor size, nodal status, histological subtype and treatment (operation or non-operation). Results: There were 23 patients with typical carcinoids (TC) (13.1%), 41 with atypical carcinoids (AC) (23.3%), 10 with large cell neuroendocrine carcinoma (LCNEC) (5.7%) and 102 with small cell lung cancer (SCLC) (57.9%). The median follow-up time was 64.5 months for AC, 38 months for LCNEC and 27 months for SCLC. The typical carcinoid censored data was 18 (more than 50% of the patients), so the median follow-up time was not obtained, and actuarial 5-year survivals for TC, AC, LCNEC and SCLC were 75.1%, 51.7%, 26.7% and 38.8%, respectively. COX univariate analysis revealed that the age (P=0.001), histological subtype (P=0.005), nodal status (P=0.000), treatment (P=0.000) and TNM staging (P=0.000) were the prognostic factors of the patients with pulmonary neuroendocrine tumors, whereas its multivariate analysis showed that only the age(P=0.001), TNM staging (P=0.002) and treatment (P=0.000) were independent prognostic factors. Conclusions: Radical surgery remains the treatment of choice, and is the only curative option. The age, TNM staging and treatment are confirmed to be the independent prognostic factors in multivariable models for pulmonary neuroendocrine tumors.

• Asian-Australasian Journal of Animal Sciences
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• 제20권5호
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• pp.701-705
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• 2007

Seven rc mutant and seven normal male birds (Rhode Island Red suie, RIR) were used in this study to determine the effects of rc mutation on semen characteristics, testosterone profile and spermatogenic tissues. All birds were randomly selected at week 12 of age and housed in individual cages and were fed and watered ad libitum. The birds were exposed to a 14L:10D light cycle during experiment. Semen were collected at weeks 22 to 23 from each bird twice a week and evaluated for semen volume (SV), sperm concentration (SC), total sperm count (TSC), percent of sperm motility (%SM), dead sperm (%DS), and sperm metabolic activity (SMA). To determine the testosterone concentration (TC) in plasma, blood was collected at weeks 12, 16 and 18. Testicular tissue were collected, processed and evaluated for semineferous tubule diameter (STD), round spermatid number (RSN), percent elongated sperm (%ES) and semineferous tubules length (STL). Body weight (BW), comb weight (CW) and testes weight (TW) were weighted at the end of experiment (week 23). The SV, TSC and %SM were significantly higher in normal birds but the %DS was higher in blind birds (p<0.05). The SC did not differ significantly between the two groups but its value was higher in normal birds. The sperm metabolic activity in the first h of collection did not differ significantly between the two groups but after 24 h, the level of SMA in normal group was significantly higher (p<0.05). The level of TC did not differ significantly between the two genotype groups but normal birds had higher TC in all collections except the last one. The STD, RSN, %ES and STL in normal birds were higher when compared to blind birds but the differences were insignificant except for ES percent. The BW, CW and TW between the two groups did not differ significantly but the weights were higher in normal group compared to blind birds. Statistical analysis of semen characteristics, testosterone profile and histological factors were indicated detrimental effects of rc mutation in prepubertal RIR blind male birds due to lack of light.

• BMB Reports
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• 제40권5호
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• pp.783-790
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• 2007

Receptor binding plays an important role in determining host specificity of the Bacillus thuringiensis Cry $\delta$-endotoxins. Mutations in domains II and III have suggested the participation of certain residues in receptor recognition and insect specificity. In the present study, we expressed the cloned domain II-III fragment of Cry4Ba and examined its binding characteristics to mosquito-larval midgut proteins. The 43-kDa Cry4Ba-domain II-III protein over-expressed in Escherichia coli as inclusion bodies was only soluble when carbonate buffer, pH 10.0 was supplemented with 4M urea. After renaturation via stepwise dialysis and subsequent purification, the refolded domain II-III protein, which specifically reacts with anti Cry4Ba-domain III monoclonal antibody, predominantly exists as a $\beta$-sheet structure determined by circular dichroism spectroscopy. In vitro binding analysis to both histological midgut tissue sections and brush border membrane proteins prepared from susceptible Aedes aegypti mosquito-larvae revealed that the isolated Cry4Ba-domain II-III protein showed binding functionality comparable to the 65-kDa full-length active toxin. Altogether, the data present the 43-kDa Cry4Ba fragment comprising domains II and III that was produced in isolation was able to retain its receptor-binding characteristics to the target larval midgut proteins.

• Asian-Australasian Journal of Animal Sciences
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• 제20권5호
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• pp.706-710
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• 2007

This study was to investigate the caponization effects on bone characteristics in male chickens, and the optimum testosterone implantation dosage on bone characteristics improvement. Healthy Single Comb White Leghorn cockerels were caponized at 12-wk-old and selected at 16-wk-old for a 10-wk feeding experiment. Fifteen intact male and caponized male chickens (capon) respectively were assigned to trial 1. Ten sham-operated chickens and 40 capons (randomly allocated into four treatments) were implanted with cholesterol (1.62 mm i.d., 3.16 mm o.d., $9.24{\pm}0.36$ mg), low (1 mm i.d., 3 mm o.d., $5.88{\pm}0.23$ mg), medium (1.62 mm i.d., 3.16 mm o.d., $9.81{\pm}0.17$ mg) or high dose (2 mm i.d., 4 mm o.d., $16.7{\pm}0.24$ mg) of testosterone in trial 2. The results from trial 1 showed that the tibia length, relative tibia weight, breaking strength, bending moment and stress in intact males were higher than capons (p<0.05). The blood phosphorus concentration in capons was higher than the intact male chickens (p<0.05). Caponization also resulted in more antrums and osteoclasts within periosteum and cortical bone from histological observation. In trial 2, the adverse impact of caponization on the bone breaking strength, bending moment and stress could be alleviated through medium dose testosterone implantation. It appears that caponization reduced androgen secretion hence influenced the biomechanical characteristics of bone (tibia) and these adverse effects could be alleviated through appropriate dose of testosterone implantation.

• Asian Pacific Journal of Cancer Prevention
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• 제15권21호
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• pp.9385-9390
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• 2014

Introduction: Human adiponectin (ApN) is a 30 kDa glycoprotein of 244-amino acids which is extensively produced by adipocytes. ApN acts via two receptors, namely adiponectin receptor-1 (Adipo-R1) and adiponectin receptor-2 (Adipo-R2). Studies have shown the presence of Adipo-R1 and Adipo-R2 expression immunohistochemically in human colorectal cancers (CRCs). However, only a few studies exist which investigated effects of adiponectin receptor expression on CRC characteristics. Objectives: In the present study, we aimed to explore Adipo-R1/-R2 expression in human colorectal cancers and any association with clinicopathological characteristics and survival. Materials and Methods: The study enrolled 58 colorectal cancer patients with tumor resection and a control group of 30 subjects with normal colon mucosa. Results: Positivity for Adipo-R1/-R2 expression was significantly more common in the control group in comparison to the patient group (both p<0.001). There was no significant association between Adipo-R1/-R2 expression and clinicopathological characteristics including age, sex tumor location, pTNM stage, Duke's stage, metastasis, histological differentiation, perineural invasion, venous invasion sex, lymphatic invasion, cancer-related mortality, tumor size and recurrence. Adipo- R1/-R2 positivity was also not significantly linked to progression-free or overall survival [p values (0.871, 0.758) and (0.274, 0.232), respectively]. Conclusions: Although significantly reduced Adipo-R1/-R2 expression was found in colorectal cancer patients, it had no influence on survival.