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QUANTUMHUNTER MAIN MENU * Home LEECH Posted on 29-03-2021 by admin Leech definition is - any of numerous carnivorous or bloodsucking usually freshwater annelid worms (class Hirudinea) that have typically a flattened lanceolate segmented body with a sucker at each end. Leech is a fictional character from the popular toy line Masters of the Universe by Mattel. A member of the Evil Horde, he is an amphibian-like creature, of a large and bulky build with green skin and suction pads on his hands, feet and mouth. It is these suction pads that provide him with his main power: to suck and drain the life-force from his opponent, rendering them helpless against him. Leech is a minor attribute introduced in Warlords of Draenor.Leech causes a player to instantly return health from both outgoing damage and outgoing heals. The amount of health returned is equal to your amount of Leech, 1% of Leech will return health equal to 1% of your damage and healing done. Also found in: Thesaurus, Medical, Acronyms, Idioms, Encyclopedia, Wikipedia. LEACH to dissolve out substances; to percolate Not to be confused with: Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree LEACH (lēch)v.tr. 1. To remove soluble or other constituents from by the action of a percolating liquid: heavy rains that leached the soil of minerals. 2. To remove from a substance by the action of a percolating liquid: acids in groundwater that leach calcium out of the bedrock. 3. To empty; drain: 'a world leached of pleasure, voided of meaning'(Marilynne Robinson). v.intr. To be dissolved or passed out by a percolating liquid. n. 2. A porous, perforated, or sievelike vessel that holds material to be leached. 3. The substance through which a liquid is leached. [From Middle English leche, leachate, from Old English *lece, muddy stream; akin to leccan, to moisten.] leach′a·ble adj. American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. LEACH (liːtʃ) vb 1. to remove or be removed from a substance by a percolating liquid 2. to lose or cause to lose soluble substances by the action of a percolating liquid n 5. a substance that is leached or the constituents removed by leaching [C17: variant of obsolete letch to wet, perhaps from Old English leccan to water; related to leak] LEACH (liːtʃ) n LEACH (liːtʃ) n (Biography) Bernard (Howell). 1887–1979, British potter, born in Hong Kong Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 LEACH (litʃ) v.t. 1. to dissolve out soluble constituents from (ashes, soil, etc.) by percolation. 2. to cause (water or other liquid) to percolate through something. v.i. 3. (of ashes, soil, etc.) to undergo the action of percolating water. n. 5. a leaching. 7. a vessel for use in leaching. [1425–75; late Middle English leche leachate, infusion] Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved. LEACH (lēch) To remove the soluble materials from a substance, such as ash or rock, by passing a liquid through or over it: Heavy rains leached minerals from the soil. The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. LEACH Past participle: leached Gerund: leaching Imperativeleachleach PresentI leachyou leachhe/she/it leacheswe leachyou leachthey leach PreteriteI leachedyou leachedhe/she/it leachedwe leachedyou leachedthey leached Present ContinuousI am leachingyou are leachinghe/she/it is leachingwe are leachingyou are leachingthey are leaching Present PerfectI have leachedyou have leachedhe/she/it has leachedwe have leachedyou have leachedthey have leached Past ContinuousI was leachingyou were leachinghe/she/it was leachingwe were leachingyou were leachingthey were leaching Past PerfectI had leachedyou had leachedhe/she/it had leachedwe had leachedyou had leachedthey had leached FutureI will leachyou will leachhe/she/it will leachwe will leachyou will leachthey will leach Future PerfectI will have leachedyou will have leachedhe/she/it will have leachedwe will have leachedyou will have leachedthey will have leached Future ContinuousI will be leachingyou will be leachinghe/she/it will be leachingwe will be leachingyou will be leachingthey will be leaching Present Perfect ContinuousI have been leachingyou have been leachinghe/she/it has been leachingwe have been leachingyou have been leachingthey have been leaching Future Perfect ContinuousI will have been leachingyou will have been leachinghe/she/it will have been leachingwe will have been leachingyou will have been leachingthey will have been leaching LEECHING Past Perfect ContinuousI had been leachingyou had been leachinghe/she/it had been leachingwe had been leachingyou had been leachingthey had been leaching ConditionalI would leachyou would leachhe/she/it would leachwe would leachyou would leachthey would leach Past ConditionalI would have leachedyou would have leachedhe/she/it would have leachedwe would have leachedyou would have leachedthey would have leached Collins English Verb Tables © HarperCollins Publishers 2011 Noun1.leach - the process of leaching natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); 'the action of natural forces'; 'volcanic activity' Verb1.leach - cause (a liquid) to leach or percolate remove, take away, withdraw, take - remove something concrete, as by lifting, pushing, or taking off, or remove something abstract; 'remove a threat'; 'remove a wrapper'; 'Remove the dirty dishes from the table'; 'take the gun from your pocket'; 'This machine withdraws heat from the environment' 2.leach - permeate or penetrate gradually; 'the fertilizer leached into the ground' dribble, trickle, filter - run or flow slowly, as in drops or in an unsteady stream; 'water trickled onto the lawn from the broken hose'; 'reports began to dribble in' 3.leach - remove substances from by a percolating liquid; 'leach the soil' remove, take away, withdraw, take - remove something concrete, as by lifting, pushing, or taking off, or remove something abstract; 'remove a threat'; 'remove a wrapper'; 'Remove the dirty dishes from the table'; 'take the gun from your pocket'; 'This machine withdraws heat from the environment' Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. LEACH verbextract, strain, drain, filter, seep, percolate, filtrate, lixiviate(Chemistry)Minerals leach from the soil much faster on cleared land. Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002 LEACH verbTo flow or leak out or emit something slowly: bleed, exude, ooze, percolate, seep, transpire, transude, weep. The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. LEACH [liːtʃ] B.VI → lixiviarse Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005 LEACH Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007 Want to thank TFD for its existence? Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content. LEECH DEFINITION Link to this page: Scientific Name(s): Hirudo medicinalis L. Phylum: Annelida. Common Name(s): Fresh water leech, Medicinal leech Medically reviewed by Drugs.com. Last updated on Apr 24, 2020. CLINICAL OVERVIEW USE Leeches have been used for bloodletting, wound healing, and stimulating blood flow at postsurgical sites. Use in osteoarthritis is being investigated, but there is a lack of clinical information to make recommendations. DOSING Consult existing guidelines for the use of leeches. CONTRAINDICATIONS Arterial insufficiency, previous exposure to leeches (risk of allergic reaction), immunosuppression (risk of infection), patient refusal to accept possible subsequent blood transfusions, and unstable medical conditions have been described as contraindications for extensive leech therapy. PREGNANCY/LACTATION Information regarding safety in pregnancy and lactation is lacking. Avoid use because of risk of infection and anemia. INTERACTIONS None well documented. ADVERSE REACTIONS Extensive blood loss. Allergic reactions and infections may develop. TOXICOLOGY No data. BIOLOGY There are more than 700 species of leeches, all of which are carnivorous.1 The leech is an hermaphrodite, containing both male and female sexual organs, but is not self-fertile. The use of medicinal leeches (H. medicinalis) is preferred because of their ability to bite deeply and cause prolonged bleeding even after they are detached. H. medicinalis can reach up to 12 cm long, but is generally smaller, weighing 1 to 1.5 g before feeding. H. medicinalis has both anterior and posterior suckers, with the head located at the narrow tapered end. The anterior sucker has 3 jaws, each with 60 to 100 teeth for biting. The posterior sucker is used for attachment and crawling.1 Leeches obtained from commercial breeders are easily maintained in a chlorine-free salt solution at 10° to 20°C. Under such conditions, leeches can survive for up to 18 months. HISTORY The medicinal use of leeches dates back to ancient Egyptians around 1300 BC; the Greek physician Galen (130 to 201 AD) commonly used leeches for bloodletting. The 19th century heralded the widespread use of leeches for bloodletting—leading to a leech shortage from 1825 to 1850 in France requiring the importation of leeches from America.1, 2, 3, 4, 5, 6 By the end of the 19th century, the medicinal use of leeches had lost popularity due to adoption of the modern concepts of pathology and microbiology.1 CHEMISTRY Different species of leeches secrete varying compounds with differing hematological actions.7, 8 Following attachment, H. medicinalis secretes hirudin, a selective thrombin inhibitor, which enhances bleeding and prevents coagulation.1, 9, 10 Hirudin was first described more than a century ago and characterized as a 65-amino acid peptide with antithrombokinase activity.1 Early therapeutic studies of hirudin were limited by low natural yield, but the compound has recently been produced in larger quantities by recombinant gene techniques.11, 12 Recombinant hirudin binds avidly to thrombin, thus low doses inhibit venous thrombosis in animals. Extracts from leeches have been marketed in creams for topical application. In addition to hirudin, leeches secrete hirustasin, which selectively inhibits tissue kallikreins; antistasin and ghilanten, which inhibit Factor Xa; calin, apyrase, and saratin, which inhibit platelet aggregation; a histamine-like compound, which causes vasodilation; hyaluronidase and collagenase, which increase permeability; and bdellin and eglin, which are proteinase inhibitors.1, 10, 13, 14 There is conflicting evidence as to whether an anesthetic is secreted in H. medicinalis.4, 15, 16 Theromyzon is widely distributed in the tissue of the leech Theromyzon tessulatum and has angiotensin-converting, enzyme-like properties8 and peptides with antimicrobial properties have been identified.17 Undefined anti-inflammatory substances in the saliva of medicinal leeches have been reported.18, 19 USES AND PHARMACOLOGY ISCHEMIC TISSUE Medicinal leeches are used to stimulate the flow of blood at postoperative surgical sites.2, 15, 16 After attaching to the site, leeches secrete compounds, especially hirudin, that reduce blood viscosity. They provide the drainage needed to permit decongestion and to preserve tissue viability until normal venous flow is established.16, 20 Reviews of the use of 'hirudotherapy' in localized venous congestion or hematoma have been published; most commonly, only case reports exist in the literature.18, 21, 22 OTHER USES Based on reported anti-inflammatory substances in the saliva of medicinal leeches, a number of clinical studies have evaluated the role of leeches in osteoarthritis.18, 19 Blinding of participants is problematic in such studies and comparators have used transcutaneous electrical nerve stimulation (TENS)23 and topical diclofenac.24 A meta-analysis of clinical studies (n=4) reported moderate to strong evidence for pain reduction, functional impairment, and joint stiffness following leech therapy.19 DOSING Institutional guidelines may exist for the use of leeches. Leeches are applied from 2 to 4 times a day for up to a week. Feeding is complete in about 20 minutes, at which time the leech drops off. Removal of the leech may be hastened by applying solutions of salt, vinegar, a flame, or a local anesthetic. Leeches should not be forcibly removed. Bleeding from the attachment site usually continues for several hours. Reuse of leeches is discouraged to minimize the development of cross-infection.1, 20, 25, 26 PREGNANCY / LACTATION Information regarding safety in pregnancy and lactation is lacking. Avoid use due to risk of infection and anemia. INTERACTIONS None well documented. Closely monitor conditions requiring concomitant anticoagulant therapy. One study found no changes in ipsilateral activated partial thromboplastin or prothrombin times when leeches were applied to an intact hand. This suggests that systemic or local anticoagulation is not likely to occur and that the risk of interference with other therapies may be small.27 ADVERSE REACTIONS Arterial insufficiency, previous exposure to leeches (risk of allergic reaction), immunosuppression (risk of infection), patient refusal to accept possible subsequent blood transfusions, and unstable medical conditions have been described as contraindications for extensive leech therapy.9 BLOOD LOSS Leeches may consume up to 50 mL blood per application, and their secretions during a single feed can prevent coagulation (in vitro) of up to 100 mL human blood. Passive bleeding after detachment can continue up to 72 hours but most commonly continues for about 5 hours. Blood loss may occur, sometimes requiring transfusions.18, 28 INFECTION H. medicinalis should be considered a possible vector of infectious diseases. The incidence of infection consequent to leech therapy ranges from 2% to 20%.21, 22 The gram-negative Aeromonas hydrophilia is the predominant microbial species found in leeches.1, 9, 29, 30 Serratia, Klebsiella, and Pseudomonas have also been isolated10, 31, 32, 33, 34 and patients should receive appropriate prophylactic antibiotic therapy. Older studies suggested possible transmission of HIV and hepatitis, but this is less likely with the use of farmed leeches.22, 35 Reuse of leeches is not recommended due to concerns of disease transmission.4 OTHER Local allergic reactions and anaphylaxis have been reported.36 Leeches found in the nose, throat, and the GI tract have caused complications.37, 38, 39, 40 TOXICOLOGY No data. REFERENCES 1. Whitaker IS, Cheung CK, Chahal CA, Karoo RO, Gulati A, Foo IT. By what mechanism do leeches help to salvage ischaemic tissues? A review. Br J Oral Maxillofac Surg. 2005;43(2):155-160.157492172. Hayden RE, Phillips JG, McLear PW. Leeches. Objective monitoring of altered perfusion in congested flaps. Arch Otolaryngol Head Neck Surg. 1988;114(12):1395-1399.31908663. Rao J, Whitaker IS. Use of Hirudo medicinalis by maxillofacial surgical units in the United Kingdom: current views and practice. Br J Oral Maxillofac Surg. 2003;41(1):54-55.4. Whitaker IS, Izadi D, Oliver DW, Monteath G, Butler PE. Hirudo medicinalis and the plastic surgeon. Br J Plast Surg. 2004;57(4):348-353.151457395. Ventura HO, Mehra MR. Bloodletting as a cure for dropsy: heart failure down the ages. J Card Fail. 2005;11(4):247-252.158803326. Hodgson D. Of gods and leeches: treatment of priapism in the nineteenth century. J R Soc Med. 2003;96(11):562-565.145949727. Ledizet M, Harrison LM, Koskia RA, Cappello M. Discovery and pre-clinical development of antithrombotics from hematophagous invertebrates. Curr Med Chem Cardiovasc Hematol Agents. 2005;3(1):1-10.8. Rivière G, Michaud A, Deloffre L, et al. Characterization of the first non-insect invertebrate functional angiotensin-converting enzyme (ACE): leech TtACE resembles the N-domain of mammalian ACE. Biochem J. 2004;382(pt 2):565-573.151750049. Chepeha DB, Nussenbaum B, Bradford CR, Teknos TN. Leech therapy for patients with surgically unsalvageable venous obstruction after revascularized free tissue transfer. Arch Otolaryngol Head Neck Surg. 2002;128(8):960-965.1216277910. Dippenaar R, Smith J, Goussard P, Walters E. Meningococcal purpura fulminans treated with medicinal leeches. Pediatr Crit Care Med. 2006;7(5):476-478.1687804911. Wallis RB. Hirudins and the role of thrombin: lessons from leeches. Trends in Pharmacol Sci. 1988;9(12):425-427.307808112. Hand R, et al. A review of the pharmacology, clinical applications, and toxicology of hirudin and hirulog. Transgenica: J Clin Biotechnol. 1994;1:1.817222513. Deckmyn H, Stassen JM, Vreys I, Van Houtte E, Sawyer RT, Vermylen J. Calin from Hirudo medicinalis, an inhibitor of platelet adhesion to collagen, prevents platelet-rich thrombosis in hamsters. Blood. 1995;85(3):712-719.783347514. Harsfalvi J, Stassen JM, Hoylaerts MF, et al. Calin from Hirudo medicinalis, an inhibitor of von Willebrand factor binding to collagen under static and flow conditions. Blood. 1995;85(3):705-711.783347415. Baskova IP, Khalil S, Nartikova VF, Paskhina TS. Inhibition of plasma kallikrein, kininase and kinin-like activities of preparations from the medicinal leech. Thrombosis Research. 1992;67(6):721-730.144053716. Rados C. Beyond bloodletting: FDA gives leeches a medical makeover. FDA Consum. 2004;38(5):9.1559514117. Salzet M. Neuropeptide-derived antimicrobial peptides from invertebrates for biomedical applications. Curr Med Chem. 2005;12(26):3055-3061.1637570018. Porshinsky BS, Saha S, Grossman MD, Beery Ii PR, Stawicki SP. Clinical uses of the medicinal leech: a practical review. J Postgrad Med. 2011;57(1):65-71.2120611519. Lauche R, Cramer H, Langhorst J, Dobos G. A systematic review and meta-analysis of medical leech therapy for osteoarthritis of the knee. Clin J Pain. 2014;30(1):63-72.2344606920. Abrutyn E. Hospital-associated infection from leeches. Ann Intern Med. 1988;109(5):356-358.304421021. Elyassi AR, Terres J, Rowshan HH. Medicinal leech therapy on head and neck patients: a review of literature and proposed protocol. Oral Surg Oral Med Oral Pathol Oral Radiol. 2013;116(3):e167-e172.2281946222. O'Dempsey T. Leeches--the good, the bad and the wiggly. Paediatr Int Child Health. 2012;32(suppl 2):S16-S20.2339475423. Stange R, Moser C, Hopfenmueller W, et al. Randomised controlled trial with medical leeches for osteoarthritis of the knee. Complement Ther Med. 2012;20(1-2):1-7.2230524224. Michalsen A, Klotz S, Lüdtke R, Moebus S, Spahn G, Dobos GJ. Effectiveness of leech therapy in osteoarthritis of the knee: a randomized, controlled trial. Ann Intern Med. 2003;139(9):724-730.1459745625. Adams SL. The emergency management of a medicinal leech bite. Ann Emerg Med. 1989;18(3):316-319.292334026. Rao P, Bailie FB, Bailey BN. Leechmania in microsurgery. Practitioner. 1985;229(1408):901-905.405917027. Blackshear JL, Ebener MK. Leeching, hirudin, and coagulation tests. Ann Intern Med. 1994;121(2):151-152.801773528. Ikizceli I, Avsarogullari L, Sözüer E, Yürümez Y, Akdur O. Bleeding due to a medicinal leech bite. Emerg Med J. 2005;22(6):458-460.1591196529. Ardehali B, Hand K, Nduka C, Holmes A, Wood S. Delayed leech-borne infection with Aeromonas hydrophilia in escharotic flap wound. J Plast Reconstr Aesthet Surg. 2006;59(1):94-95.1648279630. Steer A, Daley AJ, Curtis N. Suppurative sequelae of symbiosis. Lancet. 2005;365(9454):188.1563930331. Dickson WA, Boothman P, Hare K. An unusual source of hospital wound infection. Brit Med J. 1984;289(6465):1727-1728.644062332. Kourt B, Segars LW, Davis TW. When the prescription says 'leeches.' Am J Hosp Pharm. 1994;51(17):2113-2114, 2116.798568533. Bickel KD, Lineaweaver WC, Follansbee S, Feibel R, Jackson R, Buncke HJ. Intestinal flora of the medicinal leech Hirudinaria manillensis. J Reconstr Microsurg. 1994;10(2):83-85.818256934. Wilken GB, Appleton CC. Bacteriological investigation of the occurrence and antibiotic sensitivities of the gut-flora of the potential southern African medicinal leech, Asiaticobdella buntonensis (Hirudinidae). J Hosp Infect. 1993;23(3):223-228.809909635. Nehili M, Ilk C, Mehlhorn H, Ruhnau K, Dick W, Njayou M. Experiments on the possible role of leeches as vectors of animal and human pathogens: a light and electron microscopy study. Parasitol Res. 1994;80(4):277-290.807301336. Tseng CC, Ho CY. Removal of a nasal leech: a safe and effective method. Otolaryngol Head Neck Surg. 2005;132(5):814-815.1588664437. Bergua A, Vizmanos F, Monzón FJ, Blasco RM. Unavoidable epistaxis in the nasal infection of leeches [in Spanish]. Acta Otorrinolaringol Esp. 1993;44(5):391-393.812997738. Uygur K, Yasan H, Yavuz L, Dogru H. Removal of a laryngeal leech: A safe and effective method. Am J Otolaryngol. 2003;24(5):338-340.1313044839. Kuehnemund M, Bootz F. Rare living hypopharyngeal foreign body. Head Neck. 2006; 28(11):1046-1048.1693331440. Krüger C, Malleyeck I, Olsen OH. Aquatic leech infestation: a rare cause of severe anaemia in an adolescent Tanzanian girl. Eur J Pediatr. 2004;163(6):297-299.15346909 DISCLAIMER This information relates to an herbal, vitamin, mineral or other dietary supplement. This product has not been reviewed by the FDA to determine whether it is safe or effective and is not subject to the quality standards and safety information collection standards that are applicable to most prescription drugs. This information should not be used to decide whether or not to take this product. This information does not endorse this product as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this product. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this product. This information is not specific medical advice and does not replace information you receive from your health care provider. You should talk with your health care provider for complete information about the risks and benefits of using this product. This product may adversely interact with certain health and medical conditions, other prescription and over-the-counter drugs, foods, or other dietary supplements. This product may be unsafe when used before surgery or other medical procedures. It is important to fully inform your doctor about the herbal, vitamins, mineral or any other supplements you are taking before any kind of surgery or medical procedure. With the exception of certain products that are generally recognized as safe in normal quantities, including use of folic acid and prenatal vitamins during pregnancy, this product has not been sufficiently studied to determine whether it is safe to use during pregnancy or nursing or by persons younger than 2 years of age. Copyright © 2020 Wolters Kluwer Health FURTHER INFORMATION Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances. POST NAVIGATION Final Fantasy 3 Sprites Microsoft Works Latest Version Search for: MOST POPULAR ARTICLES * : Super Saiyan 6 Goku * : Fullmetal Alchemist All Episodes English Dubbed Torrent Download * : Buds Keygen * : Vaaranam Aayiram Thiruppavai Lyrics In Tamil Pdf * : Vivaldi Font Free For Mac