• Journal of Species Research
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• 제9권2호
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• pp.147-161
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• 2020

Seven new species of two genera Scalarispongia and Smenospongia (Demospongiae: Dictyoceratida: Thorectidae) are described from Gageo Island and Jeju Island, Korea. Five new species of Scalarispongia are compared to nine reported species of the genus by the skeletal structure. Scalarispongia viridis n. sp. has regular ladder-like skeletal pattern arranged throughout the sponge body and has pseudo-tertiary fibres. Scalarispongia favus n. sp. is characterized by the honeycomb shape of the surface and is similar to Sc. flava in skeletal structure, but differs in sponge shape. Scalarispongia lenis n. sp. is similar to Sc. regularis in skeletal structure but has fibers that are smaller in size. Scalarispongia canus n. sp. has irregular skeletal structure in three dimensions and ladder-like which comes out of the surface and choanosome. Scalarispongia subjiensis n. sp. has pseudo-tertiary fibres and its regular ladder-like skeletal pattern occurs at the choanosome. Two new species of Smenospongia are distinguished from the other 19 reported species of the genus by the skeletal structure. Smenospongia aspera n. sp. is similar to Sm. coreana in sponge shape but new species has rarely secondary web and thin and thick bridged fibres at near surface. Smenospongia mureungensis n. sp. has very simple skeletal structure.

• Journal of Species Research
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• 제12권1호
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• pp.38-47
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• 2023

Seven new species of genus Dysidea (Demospongiae: Dictyoceratida: Dysideidae) are described from Jejudo Island and Geomundo Island, Korea. These new species are compared with other reported species in fibre structure and arrangement, and cored detritus. Dysidea reticulum n. sp. is similar to D. glavea in skeletal structure but differ in sponge shape. Dysidea simplex n. sp. is close to D. glavea with loosely arranged skeletal structure but fibres in this new species are not cored with large sands. Dysidea pyeongdaensis n. sp. is characterized by tube-like surface oscules open toward the sandy bottom. Dysidea capillus n. sp. is similar to D. dokdoensis in skeletal structure, but differs in long surface conules. Dysidea mukriensis n. sp. is close to D. corallina in distinct dense surface conules, but differs in sponge shape and skeletal structure. Dysidea membrana n. sp. is similar to D. sabulum in primary fibres cored with numerous large sands, but differs in sponge surface conules and secondary fibres. Dysidea chujaensis n. sp. is unique in the sponge shape and skeletal structure.

• 대한정형도수물리치료학회지
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• 제13권1호
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• pp.58-66
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• 2007

The purpose of this study is to understand the structure and biomechanics of the skeletal muscle. The skeletal muscle takes 40 to 45% of the whole body. Stable posture requires a balance of muscle. However, when the muscle strength is unbalanced, movement initiates. The power generated by the muscle is a primary means to adjust the equilibrium of posture and movement. The structural unit of the skeletal muscle is a long cylindrical type muscle fiber which contains hundreds of nucleus. The thickness of muscle fiber is about $10-100{\mu}m$, and its length is about 1-50cm. Muscle fiber is composed of myofibril that is covered with plasma membrane which is called sarcolemma. In understanding the movement of human body, it is important to comprehend the movement of bone and joint and the tension of muscle. Understanding the structure and biomechanics of muscle also provides basic information on clinical treatment of patients.

• 대한치과교정학회지
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• 제27권2호
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• pp.209-219
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• 1997

본 연구는 골격성 III급 부정교합자에서 상하악절치의 치성보상 양상과 골격형태 사이의 상관관계를 규명하기 위해 시행되었다. 정상교합자 59명, 미약한 골격성 III급 부정교합자 91명 그리고 심한 골격성 III급 부정교합자 58명을 연구대상으로 선정하였으며 특히 미약한 골격성 III급 부정교합자는 전치부 반대교합의 유무에 따라 반대교합이 없는 군과 반대교합군으로 세분하여 연구하였다. 측모두부방사선규격사진을 15개의 골격 형태 계측항목과 16개의 상하악절치 경사도 및 위치 계측항목으로 분석한 뒤 통계 처리하여 다음과 같은 결과를 얻었다. 1. 각 군의 상하악 전치부 치성보상 양상을 보면 II-B군에 비해 II-A군과 III군의 상악 중절치는 순측경사 되어 있으며 II-A군이 III군 보다 크게 순측경사 되어 있었다. 하악절치는 II-A군과 II-B군에 비해 III군이 설측경사 되었으며 II-A군과 II-B군의 차이는 없었다. 2. II-A군과 II-B군 사이의 수직적인 골격형태 차이는 크지 않았고 하악절치 보다는 상악절치 위치 및 경사도에서 큰 차이를 보였다. 3. II- A군의 하악절치와 II-B군의 상악절치 계측항목이 골격형태와 상관성이 높았으며 특히 하악절치 계측항목중에서는 ∠IMPA, ∠FMIA, 상악절치 계측항목중에서는 ∠U1-FH, ∠U1-SN이 높은 상관성을 보였다. 4. 하악절치 계측항목중 ∠IMPA, ∠FMIA는 모든 군에서 골격형태와 높은 상관성을 보였다. 상악절치 계측항목중에서는 ∠U1-SN, ∠U1-FH, U1-facial plane(mm)이 다른 계측 항목에 비해 상관성이 높았다.

• 한국전문물리치료학회지
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• 제13권1호
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• pp.47-53
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• 2006

Since ultrasound has different reflections depending on components of organization, analysis of ultrasound images of skeletal muscle can offer both quantitative and qualitative reports as concerns skeletal muscle structure. This study is focused on the ultrasound method for evaluating the structural characteristics of skeletal muscle and also conducted to examine its practicality. After obtaining images of the elbow flexors from an ultrasound image device with 88 normal subjects whose ages were between twenty and seventy years old (44 men and 44 women), muscular density and white area index (WAI) which indicated structural characteristics of skeletal muscle were analyzed with gray scale analysis. The study examined correlations between subject's age and items which obtained from measuring ultrasound images and the differences in relations to sex and age. Muscular density and WAI had a high correlation with age and were significantly increased in men and women with greater age. The quantitative evaluation method of skeletal muscle structure which analyzed the ultrasound images has high practicality because it is a non-invasive method which complements physical therapy diagnosis and research methods and promotes functionality evaluation.

• Animal cells and systems
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• 제11권1호
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• pp.55-60
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• 2007

Four new species, Semitaspongia jejuensis, Scalarispongia regularis, S. nigra and Dysidea violata are described from Jejudo, Korea. They were collected from 15 m depth by SCUBA diving and from intertidal area by hand. Semitaspongia jejuensis n. sp. is easily distinguished from other Semitaspongia species in growth form, conules, colour, skeletal structure, diameter of fibre and habitat. Scalarispongia regularis n. sp. is very close to S. scalaris (Schmidt, 1862) in skeletal structure, but S. scalaris has longer conules, larger meshes, longer distance between primary fibres, and highly developed subdermal canal system. Scalarispongia nigra n. sp. is very close to S. regularis in skeletal structure but can be easily distinguished by its black colour of external surface and growth form. Dysidea violata n. sp. is similar with D. ethria (Laubenfels, 1936) in sponge appearance, but D. etheria is clearly defined by its blue colour and thickness of fibre.

• 대한의생명과학회지
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• 제16권4호
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• pp.207-212
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• 2010

Archivillin, a muscle-specific isoform of supervillin, is a component of the costameric cytoskeleton of muscle cells. The purpose of this study was to determine which protein in the skeletal muscle collaborates with archvillin C-terminus. For this purpose, a yeast two-hybrid screening of human skeletal muscle cDNA library was performed using the C-terminal region of archvillin as bait. This study shows that seven human skeletal muscle proteins, namely, nebulin, xeplin, archvillin, GAPDH, TOX4, PITRM1, and YME1L1 interact with archvillin C-terminus. Especially, xeplin is a newly discovered protein interacts with archvillin C-terminus. These results indicate that archvillin C-terminus acts as a bridge between nebulin and xeplin at costameres. Archvillin C-terminal region interacts with nebulin C-terminal region at Z-discs and interacts with xeplin at the vicinity of sarcolemma. I propose that these interactions may contribute to formation of costameric structure and muscle contraction.

• The Journal of Korean Physical Therapy
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• 제18권1호
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• pp.83-94
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• 2006

Purpose: This study conducts quantitative evaluation or structural and functional characteristics or normal skeletal muscle with ultrasound image and surface electromyography, and is to provide basic materials for utilizing ultrasound image analysis in physical therapy diagnosis and assessment of skeletal muscle. Methods: Measurement of three stages was conducted with 88 normal adults between their twenties and seventies, correlations and differences using collected data according to age and gender were compared and correlations among measured items were analyzed and then the following conclusions were obtained. Results: Analysis of ultrasound image of normal skeletal muscle showed that density, median frequency had the closest relations with age. In addition, it was found that there were high correlations between density explaining structural characteristics of skeletal muscle and median frequency explaining functional characteristics. Conclusion: Analysis of ultrasound image makes complex evaluation of structure and function of skeletal muscle possible when it is connected with functional evaluation method using physical measurement surface electromyography as well as quantitative evaluation of structural changes of skeletal muscle and is effective in complementing physical therapy diagnosis centering around functionality evaluation.

• 동의생리병리학회지
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• 제20권6호
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• pp.1543-1547
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• 2006

The aim of this experiment was to observe and analysis clinical effect of the 'Sexiang shuhuo Jing' on histological change for 14days after skeletal muscle injury in rats. The gastrocnemius muscles of rats were damaged by electromechanical and serial cryosections of the damaged muscle were prepared at 1, 5, 10, 14 days after injury. Muscle sample of the both control and 'Sexiang Shuhuo Jing' treated group were prepared for histological analysis by optical microscope and electron microscopy. 'Sexiang Shuhuo Jing' treatment group's skeletal muscle recovery was much more faster than control group. After 5 day's 'Sexiang Shuhuo Jing' treatment group's basically recovery normal structure of muscle fiber. After 14 day's control group's damaged muscle were basically recovery structure of muscle fiber but still has some factor of pathological impression but in Sexiang Shuhuo Jing treatment group's can't be found that.

• 한국가금학회:학술대회논문집
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• 한국가금학회 2000년도 제17차 정기총회 및 학술발표
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• pp.78-80
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• 2000

A new murine TGF-$\beta$ family member, myostatin(growth/differentiation factor-8) is expressed specifically in developing and adult skeletal muscle and may be a negative regulator of skeletal muscle development. This study aims at characterization and identification of genomic organization of chicken myostatin gene. In thi study, we identified the genomic organization and sequence of chicken myostatin gene. Results of RT-PCR and Northern blots from various tissues showed different mRNA expression levels in developmental stages of chick embryos and demonstrated strong expression of myostatin mRNA in skeletal muscle. These facts suggest that chicken myostatin gene would play an important role not only in skeletal muscle cell but also in other tissues.