• Animal Systematics, Evolution and Diversity
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• 제18권1호
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• pp.49-52
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• 2002

조령연두꼬마거미(Chrysso lativentris)의 수컷이 그림과 함께 최초로 기재된다. 수컷은 다리식이 암컷과 다르며 북부 후단의 돌기물이 암컷보다 더 작다. 촉지의 중부돌기의 구조가 독특하다.

• Parasites, Hosts and Diseases
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• 제31권1호
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• pp.1-6
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• 1993

현재 인체에는 기새하는 Taenia 조충으로는 돼지고기 유구낭미층(Cysticercus cellulosae)을 먹어서 감염되는 Taenia solium Linnaeus 1785과 쇠고기의 무구낭미층(Cysticercus bovis)을 먹어서 감염되는 Taenia saginata Goeze 1782 두 종이 알려져 있다. 한편 인체에 기생하는 제 3의 Taenia 조충으로 최근 타이완, 한국, 인도내시아, 태국, 필리핀 등 아시아국가를 중심으로 발견되는 Asian Taenia saginata 조충은 돼지나 소의 간 또는 내장에 있는 내장형낭미충을 먹어서 감염되는 것으로 추정된다. 그러나 이러한 생활사상의 구분에도 불구하고 형태하적으로는 본충이 Taenia saginate Groeze 1782와 유사하기 때문에 아직 신종으로 인정되지 않은 상태이다. 이에 연구자들은 Asian Taenia saginata 조충의 형태학적 구분점을 새로이 발견하고 학명으로서 Taenia asiatica sp.n.(한국명:아시아조총)을 제시하고자 한다. 감별적으로는 1.선충의 두절에 있는 액취의 존재, 2. 성충의 수태편절에서 관찰되는 자궁세지의 수, 3.성충의 수태관절에서 관찰되는 미돌기의 존재 및 4.유추의 낭벽표면에서 관찰되는 사마귀양 구조가 광학 및 전자현경적으로 관찰되었다. 이중 '자궁세지'와 '미돌기'는 새로이 관찰하여 기재하는 구조물로서 처음으로 Taeniid의 종감별에 사용하였다.

• Animal cells and systems
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• 제3권1호
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• pp.59-68
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• 1999

Chthamalus challengeri Hoek was collected from intertidal rocks to rear the larvae from hatching through nauplius to cyprid in the laboratory. Larval development consists of six nauplius stages and a cyprid. Unilobed labrum with a prominent protuberance and the frontolateral horns folded under the anterior cephalic shield margin are diagnostic features through all nauplius stages. The posterior border of the cephalic shield bears no posterior shield spines in nauplius stages IV-Ⅵ. There is a specific hispid seta in the fourth group of the antennal endopodite. Morphological features such as the cephalic shield, labrum, abdominal process, antennules, antennae and mandibles in all nauplius and cyprid stages are illustrated and described. The numerical setations of the antennule are found to aid in the intraspecific identification of barnacle nauplius stages without dissection. The keys to each stage of the barnacle larvae in Korean coastal waters are provided based on the reared nauplii of seven species: Pollicipes mitella Octomeris sulcata, Chthamalus challengeri, Balanus albicostatus B. trigonus, B. amphitrite, and B. improvisus inhabiting Korean coastal waters.

• Archives of Plastic Surgery
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• 제43권6호
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• pp.529-535
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• 2016

Background The trapezius muscle flap is not usually the first reconstructive option for skin and soft tissue defects in the posterior neck and scalp due to surgeons' unfamiliarity with the surgical anatomy and developments in free tissue transfer techniques. The goals of this study were to describe the clinical use of trapezius flaps in posterior neck and scalp reconstruction, and to investigate the vascular anatomy of trapezius flaps in Asians in order to obtain information facilitating the safe design and elevation of flaps in which most of the muscle is preserved. Methods A retrospective chart review was performed of 10 patients who underwent trapezius muscle flap for posterior neck and scalp defects. We also performed an anatomical study of 16 flaps harvested from 8 preserved Asian adult cadavers and evaluated the main landmarks relevant for trapezius muscle flap. Results In the anatomical study, the mean vertical height from the inferior angle of the scapula to the point at which the superficial cervical artery penetrated the trapezius was $4.31{\pm}2.14cm$. The mean vertical height of the trapezius muscle flap pivot point was $9.53{\pm}2.08cm$ from the external occipital protuberance. Among the 10 flaps, partial necrosis on the overlaid skin graft occurred in 1 patient and postoperative seroma occurred in another patient. Conclusions Vascular variations in the trapezius muscle flap are uncommon in Asians, but when present, such variations appear to have little impact on harvesting the flap or on its circulation. The trapezius muscle flap is a viable alternative for posterior neck and scalp reconstruction.

• Journal of Korean Neurosurgical Society
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• 제54권5호
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• pp.405-410
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• 2013

Objective : The objective of this study was to investigate changes in the posterior cranial fossa in patients with symptomatic Chiari malformation type I (CMI) compared to a control group. Methods : We retrospectively reviewed clinical and radiological data from 12 symptomatic patients with CMI and 24 healthy control subjects. The structures of the brain and skull base were investigated using magnetic resonance imaging. Results : The length of the clivus had significantly decreased in the CMI group than in the control group (p=0.000). The angle between the clivus and the McRae line (p<0.024), as the angle between the supraocciput and the McRae line (p<0.021), and the angle between the tentorium and a line connecting the internal occipital protuberance to the opisthion (p<0.009) were significantly larger in the CMI group than in the control group. The mean vertical length of the cerebellar hemisphere (p<0.003) and the mean length of the coronal and sagittal superoinferior aspects of the cerebellum (p<0.05) were longer in the CMI group than in the control group, while the mean length of the axial anteroposterior aspect of the cerebellum (p<0.001) was significantly shorter in the CMI group relative to control subjects. Conclusion : We elucidate the transformation of the posterior cranial fossa into the narrow funnel shape. The sufficient cephalocaudal extension of the craniectomy of the posterior cranial fossa has more decompression effect than other type extension of the craniectomy in CMI patients.

• Journal of Korean Neurosurgical Society
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• 제58권5호
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• pp.454-461
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• 2015

Objective : In this study, we aimed to investigate the underlying ethiological factors in chiari malformation (CM) type-I (CMI) via performing volumetric and morphometric length-angle measurements. Methods : A total of 66 individuals [33 patients (20-65 years) with CMI and 33 control subjects] were included in this study. In sagittal MR images, tonsillar herniation length and concurrent anomalies were evaluated. Supratentorial, infratentorial, and total intracranial volumes were measured using Cavalieri method. Various cranial distances and angles were used to evaluate the platybasia and posterior cranial fossa (PCF) development. Results : Tonsillar herniation length was measured $9.09{\pm}3.39mm$ below foramen magnum in CM group. Tonsillar herniation/concurrent syringomyelia, concavity/defect of clivus, herniation of bulbus and fourth ventricle, basilar invagination and craniovertebral junction abnormality rates were 30.3, 27, 18, 2, 3, and 3 percent, respectively. Absence of cisterna magna was encountered in 87.9% of the patients. Total, IT and ST volumes and distance between Chamberlain line and tip of dens axis, Klaus index, clivus length, distance between internal occipital protuberance and opisthion were significantly decreased in patient group. Also in patient group, it was found that Welcher basal angle/Boogard angle increased and tentorial slope angle decreased. Conclusion : Mean cranial volume and length-angle measurement values significantly decreased and there was a congenital abnormality association in nearly 81.5 percent of the CM cases. As a result, it was concluded that CM ethiology can be attributed to multifactorial causes. Moreover, congenital defects can also give rise to this condition.

• Parasites, Hosts and Diseases
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• 제22권1호
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• pp.85-95
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• 1984

한국 시장에서 얻은 명태의 장내 기생 조충류 조사의 일환으로 이 연구를 실시하였다. 명태의 장에서 얻은 각종 충체에 대하여 형태학적 계측과 박절표본을 작성한 소견을 가지고 Schmidt와 Yamaguti의 검색표에 의거하여 속과 종을 동정한 바 다음과 같은 결과를 얻었다. 1. 본 실험에서 국내에 미기록된 신종으로 Eucestoda 아강 Caryophyllidae목 Caryophyllaeidae과 Lytocesinae아과 Khawa속과 Eucestoda아강 Trypanorhyncha목 Acystidea아목 Paranybeliniidae과 Pseudonybelinia속과, Eucestoda아강 Trypanorhyncha목 Aeystidea아목 Tentaculariidae과 Nybelinia속과 Tentacularia속 그리고 Eucestoda아강 Trypanorhyncha목 Cystidae아목 Lacistorhynchidae과 Eulacistorhynchus속과 이들의 종을 확정하였다. 2. Khawia sinesis의 특징은 두절에 소포가 없으며 넓고 펑평하나 가장자리가 들쑥날쑥한 점과 목이 짧고 체부와 두부사이가 명화하지 않은 점이었다. 3. Eulncistorhynchus chiloscyllius의 특징은 두절이 꽤 긴 편이며 가장자리가 들쑥날쑥하지 않다. 구문낭도 길다. 수축근은 남의 기저부에 부착되어 있다. 흡구는 둘로 난형 혹은 원형이며 후단에, 절흔이 없다. 촉모는 길 갈고리들이 변형되어 있으며 이중의 chainette가 있다. 체절은 acraspedote하고 성숙체질은 체폭보다 길이가 더 길다. 4. Tentacularia coryphaenea의 특징은 두절이 들쑥 날쑥하지 않고 원주형이다. 흡구는 분리되었고 후단 유리 연에는 작은 가시가 있다. 두절에서 나온 4개의 수축성 촉모에는 갈고리들이 나선형으로 배열되어 있다. 촉모를 둘러싼 초는 꼬여있지 않다. 근낭은 긴 타원형이다. 5. Pseudonybelinia odontacantha의 특징은 두절이 들쑥날쑥하지 않고 촉모는 계구의 전쳔부에 가까이 부착되어 있다. 갈고리는 좌측으로 부터 나선상으로 배열되어 있다. 근낭은 폭보다 길이가 3배정도 긴다. 6. Nykelinia lingu구곤의 특징은 두절이 짧고 들쑥 날쑥하지 않다 흡구는 4개로 분리되어 있으며 각기 자유판을 갖고 있다. 촉모는 원통상으로 단단한 갈고리로 무장되어 있다.