• 제목/요약/키워드: Leeches

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Ozobranchus jantseanus (Clitellata: Ozobranchidae) from Reeve's Turtle, Mauremys reevesii: New Annelid Fauna in Korea

  • Koo, Kyo Soung;Yun, Kayoung;Jang, Yikweon
    • Parasites, Hosts and Diseases
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    • 제60권3호
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    • pp.213-215
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    • 2022
  • Turtle leeches have not been recorded in Korea, although they occur in geographically adjacent countries including China and Japan. This study describes a turtle leech, Ozobranchus jantseanus (Clitellata: Ozobranchidae), found from Reeve's turtle (Mauremys reevesii) in Korea. Of the 143 Reeve's turtles collected from the freshwater reservoir in Jinju City, Gyeongsangnam-do, Korea, 95 unidentified leeches were found in 8 (5.6%) individuals. The leeches had 22 somites with 11 pairs of externally exposed branchiae, body-sized posterior suckers, and spines on the dorsal surface. We identified these leeches as Ozobranchus jantseanus Oka, 1912 (Clitellata: Ozobranchidae). This species of turtle leeches found in Korea may fill the gap in the biodiversity of East Asian annulus.

방사광 경 엑스선 마이크로 단층촬영을 이용한 거머리의 해부학적 3차원 구조분석 (A Study of the 3D Anatomical Structure Analysis of Leech Using Hard X-ray Micro Tomography by Synchrotron Radiation)

  • 이지원;이언석
    • 한국콘텐츠학회논문지
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    • 제16권12호
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    • pp.70-77
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    • 2016
  • 본 연구에서는 거머리의 미세한 해부구조를 3차원적으로 분석 가능한 방사광의 경 엑스선 이미징을 통하여 객관적 분석법 및 생체모사기술 구축을 위한 기초자료를 구축하고자 하였다. 우리는 방사광을 이용하여 거머리의 미세 구조영상을 얻을 수 있었고, 3차원적인 해부학적 분석이 가능함을 확인하였다. 또한 방사광을 통해 얻은 데이터는 내부구조의 미세조직까지 관찰 가능하기 때문에 성분 분석 및 생리적, 기능적 측면으로도 연구의 토대가 될 것으로 사료된다. 더 나아가 추후 거머리로부터 생체모사기술 연구 분야 등에 기여할 수 있을 것이라 기대된다.

생명과학 연구를 위한 실험동물로서의 한국산 거머리에 관한 제고 (The Leech as a Laboratory Animal for the biomedical Research)

  • Hong, Seok-Jin;Don
    • 한국동물학회지
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    • 제36권4호
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    • pp.588-595
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    • 1993
  • We have collected a great Quantity of leeches, comprising five species, from six different ponds and rice paddies in the south-western part of Korea. The leeches were cultured in our laboratory with special interests on the blood-suckers (Himdo nipponial in fresh water supplemented with essential ions. A number of experiments was carried out with biomedical aspects. We have observed traits which can be used as a laboratory animal. The paper reports general features obsenred from leeches with preliminary study results carried in culture systems. The paper also describes study aspects of leeches in biochemistry, neurology and developmental biology.

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Molecular Identification of Haemadipsa rjukjuana (Hirudiniformes: Haemadipsidae) in Gageo Island, Korea

  • Won, Sohyun;Park, Bae Keun;Kim, Baek Jun;Kim, Hye Won;Kang, Jun Gu;Park, Tae Seo;Seo, Hong Yul;Eun, Ye;Kim, Ki Gyoung;Chae, Joon Seok
    • Parasites, Hosts and Diseases
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    • 제52권2호
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    • pp.169-175
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    • 2014
  • There are 60 species of blood-feeding land leeches, 50 species belonging to the family Haemadipsidae and 10 species belonging to the family Xerobdellidae. Despite recent papers on the land leeches, their taxonomic identification is not fully understood, especially at a species level. In Korea, there have been no historical records of the terrestrial leeches, but recently an unrecorded blood-feeding land leech was discovered at Gageo-do (Island), Korea. Molecular analysis was used to identify the species of 29 leeches collected from Mt. Dock-Sil in Gageo-do. Conventional PCR was conducted using nuclear 18S rRNA and mitochondrial cytochrome c oxidase subunit 1 (CO1) genetic marker. The 18S rRNA sequences revealed that the leeches share 99.9% identity with Haemadipsa rjukjuana (inhabiting Taiwan), and the CO1 sequences revealed that the leeches are very close to H. rjukjuana (inhabiting Taiwan). The CO1 sequences were separated into 2 categories, 1 with 94.6% and the other with 94.3% similarity to the H. rjukjuana L00115A (inhabiting Taiwan). This new finding of the land leech is the first record in Korea. In addition, the north range of the distribution of the blood-feeding leech (Hirudiniformes: Haemadipisidae) should be reconsidered including Korea.

Histopathology of leech parasitism on Capoeta capoeta gracilis, Squalius cephalus and Carassius auratus

  • asl, Adel Haghighi Khiabanian;Salimi, Behnam
    • 한국어병학회지
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    • 제30권2호
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    • pp.97-105
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    • 2017
  • Parasitic leeches could directly (through causing poor growth, anemia and wound in the fish) and indirectly (by predisposition of the fish to secondary bacterial and fungal infections) affects their hosts. In the present study, fishes that were attacked by leeches in natural and experimental environment were studied. Pathologic samples were obtained from damages at the site of leech bite, as well as kidney and liver of the fish. Histopathological examination revealed numerous lesions at the site of leech bite including tissue demolition, detachment at the site of leech bite in the epidermis of epithelial tissue in the skin, destructed nucleus in epithelial cells of the skin plus necrosis in the damaged skin and weak inflammatory penetration to acute necrotic damages along with piercing dermis layer. Pathologic lesions in the kidney included some changes such as proliferation by increasing glomerular cells and membrane cells in capillary vein of the kidney, blood cell necrosis in kidney with infiltration of white blood cells mainly mononuclear and less polymorphonuclear which are the symptoms of anemia due to blood feeding and sucking by leeches. There was also a chronic kidney infection probably originated from another part of body such as skin. Moreover, leeches caused hemorrhagic anemia due to blood consumption of the hosts, which led to observation of immature red blood cells. Also results showed that diseases induced by leeched in fish could be acute or chronic, which depends on size of fish, species of leech and severity of infection.

The Relationship between Explanation and Patient Compliance in Hirudotherapy

  • Kim, Kwang Seog;Sim, Ho Seup;Shin, Jun Ho;Hwang, Jae Ha;Lee, Sam Yong
    • 대한두개안면성형외과학회지
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    • 제18권3호
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    • pp.179-185
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    • 2017
  • Background: The use of leeches can effectively increase the salvage rate of flap congestion. However, the first reaction from patients and carers in using leeches in clinical fields is strong aversion. This can be due to the fact that development of our culture from agriculture to industrial society, coming across leeches became fairly rare. Also because of the biological traits that leeches carry; staying attached to a leg or other body parts of the host, sucking blood, and leaving wounds. Methods: This study was conducted through questionnaires, divided into many subgroups. We scaled the compliance of the two therapies, with or without leech. Maximum scale of 10 showing no rejective response to the therapy and minimum scale of 0 showing the greatest rejective response. Results: Overall subjects' compliance was improved after explaining the benefits of hirudotherapy. Irrelevant to the explanation, there was no significant difference in general compliance between male and female. Young-aged group and medical personnel or people studying medicine showed higher compliance over older-aged group and the general public. Conclusion: In the terms of general social cognition, recognizing leech as a therapeutic material may not be welcomed at first, but provided with proper information and explanations, overall compliance of patients and carers can be improved and consequently result in superior outcomes in flap salvage.

거머리 사용후 발생할수 있는 Aeromonas hydrophila 감염을 줄이기 위한 대책 (Measures to Reduce Aeromonas Hydrophila Infection that May Occur after Leech Apllication)

  • 윤효헌;정두성;최준
    • Archives of Reconstructive Microsurgery
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    • 제11권1호
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    • pp.73-77
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    • 2002
  • Medical application of leeches, by means of leech's blood suction, has advantages in not only directly removing blood congestion, but also preventing hindrance to venous drainage by inhibiting local thrombus formation and inducing continuous bleeding. Nevertheless, Aeromonas hydrophila infection secondary to such suction is most common and may develop into serious conditions from local inflammatory reaction to total necrosis of replanted parts and enterocolitis as well as sepsis. Once infected, it requires infection treatment, removal of necrotic tissues and reconstruction. Hence, duration and cost of treatment increase while functional recovery falls markedly. Accordingly, we present measures to reduce Aeromonas infections as follows: First, do not manipulate as much as possible while the leeches are sucking or moving. Second, the site which suction plates of the leeches are attached, should be selected away from the surgical wound site or open wound as much as possible. Third, contaminated or blood-wet gauze should be replaced often so that the skin of surgical areas would not swell. Furthermore, bleeding or oozing should be well-drained. Fourth, the areas other than the sites of leech attachment should be covered with sterilized gauzes in order to limit leech movement.

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소아에서의 수지재접합술후 의료용 거머리의 이용 (Leech Therapy in Digital Replantation of Children)

  • 윤인대;김용규;김진오;박재현;백롱민;최준
    • Archives of Reconstructive Microsurgery
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    • 제8권1호
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    • pp.64-70
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    • 1999
  • Digit that were formerly assessed as non replantable may now be replanted with the help of salvage procedure. In case that, venous repair is either marginal or technically impossible and postoperative venous congestion developed following replantation, are treated with the application of medical leeches. From July 1997 to April 1998, the authors performed arterial anastomosis and venous drainage using medical leeches in 3 children(The age of the patients ranged from 13 months to 6 years.) to have a result of aesthetic and functional success with minimizing the complications. Leech therapy has many advantages, to avoid injuring of finger tip, to decrease focal capillary coagulation, to prevent severe bleeding, and to prevent thromboembolism. The authors conclude that the use of medical leeches shows promise as a safe and effective method of providing temporary venous drainage in replanted digits.

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수지첨부 재건 후 거머리 사용시 발생하는 문제점에 대한 고찰 (The Problem of Leech Application in Digital Replantation)

  • 이내호;양경무
    • Archives of Reconstructive Microsurgery
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    • 제9권2호
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    • pp.158-163
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    • 2000
  • Over the past several years, countless patients have benefitted from the use of leeches in microsurgery. As we know, leeches are used to overcome the problem of venous congestion by creating prolonged localized bleeding uniquely characteristics of leech bite. Venous congestion, a common complication of digital replantation, often has been treated through surgical repair like arteriovenous anastomosis. The leech produces a number of important substances which contribute to the special property of the bite, including an anticoagulant, a local vasodilator and local anesthetics. The bite usually bleeds for 1 to 2 hours and under special circumstances may bleed for up to 24 hours. So venous congestion is relieved. However, leeches increase the possibility of infection through their gut content. Infection associated medical leech application is significant risk. Other risk include allergic reaction, adverse psychologic reaction and blood loss requiring transfusion. The 65 cases of medical leech application were performed between August, 1997 and May, 2000 according to an established protocol. The complication were 18 cases ; infection (13 cases), hemorrhage (2 cases), allergic reaction (1 case), psychologic problem (1 case) and hypochromic anemia (1 case). Then our study was performed on the base of indication. As a result, Aeromonas hydrophilia was cultured from gut of medical leech and Klebsiella, Staphylococcus and Pseudomonas were cultured from media. We present the clinical risk-benefit of the medical leech therapy through several cases following digital replantation.

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Methicillin-Resistant Staphylococcus Aureus Following Leech Application at a Congested Flap after a Mastectomy

  • Hwang, Kun;Kim, Hyung Mook;Kim, Yeon Soo
    • Archives of Aesthetic Plastic Surgery
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    • 제23권3호
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    • pp.143-145
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    • 2017
  • Medical leech therapy is a treatment for the venous congestion of tissue flaps, grafts, and replants. We report a case of methicillin-resistant Staphylococcus aureus (MRSA) following leech application at a congested flap after mastectomy. A 45-year-old woman had an invasive ductal carcinoma. Modified radical mastectomy was performed. The chest wall defect was reconstructed with a local rotation flap. On postoperative day (POD) 1, congestion and color change were observed, and 10 medical leeches were applied to the congested area. On POD 4, another 10 medical leeches were applied. On POD 12, wound necrosis progressed and a pus-like discharge appeared. A wound swab culture revealed MRSA. Debridement was carried out on POD 15. From POD 16, vancomycin and piperacillin/tazobactam were injected for 18 days. The wound culture on POD 18 also revealed MRSA. A split-thickness skin graft was performed on POD 28. MRSA has not been clearly identified in the literature as a leech enteric bacterium. Although MRSA may have come from another source, the present case raises the possibility of MRSA infections following leech application at congested flaps. When medical leeches are applied at the congestion site of a flap, an aseptic cradle will be helpful. Vancomycin irrigation may be needed if infection occurs.