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Topic: LDH

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	Lactate dehydrogenase - Wikipedia, the free encyclopedia
		Lactate dehydrogenase (LDH) is an enzyme (EC 1.1.1.27) present in a wide variety of organisms, including plants and animals.
		In medicine, LDH is often used as a marker of tissue breakdown.
		LDH is elevated (>200 U/l) in an exsudate and low in a transudate.
	en.wikipedia.org /wiki/LDH (446 words)

	LDH: The Test
		Currently, the main use for LDH is as a general indicator of the existence and severity of acute or chronic tissue damage and, sometimes, as a monitor of progressive conditions.
		LDH levels may also occasionally be ordered to monitor damage caused by muscle trauma or injury and to help identify hemolytic anemia (anemia caused by the breakage of red blood cells — either because they are unusually fragile or because something is mechanically breaking them (like an artificial heart valve)).
		LDH and LDH isoenzymes may still be occasionally ordered along with CK and CK-MB when a patient has symptoms of a heart attack, but this is increasingly rare.
	www.labtestsonline.org /understanding/analytes/ldh/test.html (687 words)

	p980824f - PCP Pneumonia and serum LDH
		We hypothesized that LDH level reflects radiographic extent and severity of pneumonia rather than P carinii infection specifically and therefore is not useful in the differential diagnosis of lung infections in AIDS.
		LDH levels in a group of 8 patients who developed PCP from conventional causes of immunosuppression were similar to those seen in PCP associated with HIV.
		LDH determinations prior to the episode of PCP were available in 45 patients and 39 (87%) showed an increase of greater than 50 IU at the time of diagnosis.
	www.emory.edu /WHSCL/grady/amreport/litsrch98/p980824f.html (926 words)

	LACTATE DEHYDROGENASE (LDH) - Kinetic Method (Site not responding. Last check: 2007-10-20)
		LDH is widely distributed in mamanilian tissues, being rich in myocardium, kidney, liver and muscle.
		Determination of serum LDH activity is one of the most frequently performed assays as an aid in the diagnosis of myocardial and pulmonary infarction.
		The rate of NADH for mation is proportional to the activity of LDH.
	www.khsunny.com /tests/LDH1.htm (198 words)

	Diagnostic Serum Enzymes
		LDH is present in nearly all types of metabolizing cells, but different cells have different forms of the enzyme which can be distinguished.
		A rise of all LDH isoenzymes at the same time is diagnostic of injury to multiple organs.
		One of the most important diagnostic uses for the LDH isoenzymes test is in the differential diagnosis of myocardial infarction or heart attack.
	www.elmhurst.edu /~chm/vchembook/641serumenzymes.html (749 words)

	MedlinePlus Medical Encyclopedia: LDH
		The laboratory centrifuges the blood to separate the serum (liquid portion) from the cells, and the LDH test is done on the serum.
		The enzyme LDH is in many body tissues, especially the heart, liver, kidney, skeletal muscle, brain, blood cells, and lungs.
		LDH catalyzes the interconversion of pyruvate and lactate.
	www.nlm.nih.gov /medlineplus/ency/article/003471.htm (414 words)

	M-LDH serves as a sarcolemmal KATP channel subunit essential for cell protection against ischemia (Site not responding. Last check: 2007-10-20)
		LDH activity was present in anti-SUR2A immunoprecipitation pellets, whereas no activity was observed when the experimental protocol was applied without the antibody (Figure 2B).
		LDH is a tetramer composed of either M (muscle) and/or H (heart) subunits, which may be combined to form five LDH isozymes (Van Hall, 2000).
		Although LDH is normally a tetramer (Li, 1990; Takatani et al., 2001), the catalytic function of LDH does not depend upon interaction between LDH subunits, and single subunits retain catalytic activity (King and Weber, 1986).
	www.nature.com /emboj/journal/v21/n15/full/7594610a.html (6837 words)

	* LDH - (Disease): Definition (Site not responding. Last check: 2007-10-20)
		LDH is most often measured to evaluate the presence of tissue damage.
		The LDH is in many body tissues, especially the heart, liver, kidney, skeletal muscle, brain, blood cells, and lungs...
		It has also been used to monitor patients with, but it is much less specific than isoenzyme and LDH isoenzyme for this purpose...
	www.bestknows.com /disease/ldh.html (344 words)

	CHEST: Serum Lactate Dehydrogenase in Pneumocystis carinii Pneumonia, Tuberculosis, and Bacterial Pneumonia - LDH - ) (Site not responding. Last check: 2007-10-20)
		Prior reports have suggested a diagnostic role for LDH in PCP but included relatively few patients with other forms of pneumonitis for comparison.[1-4] We have found LDH levels to be increased in patients with infections that sometimes mimick PCP (or vice versa) and that frequently enter its differential diagnosis.
		LDH values exceeding 1,000 U/L were observed only in patients with disseminated TB and were a sign of poor prognosis: 6 of 11 died.
		A normal serum LDH level may be useful in excluding PCP (at least in cases with definite lung infiltrates), but elevated values remain nonspecific and must be interpreted with due consideration of coexisting diseases and other serum enzyme abnormalities.
	www.findarticles.com /p/articles/mi_m0984/is_2_108/ai_53980215/pg_2 (1199 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		In those studies of LDH in trauma patients, some have shown a reduction in DVT with LDH but usually it was not significant.
		There may be a role for the use of LDH in combination with sequential compression devices (SCDs) in trauma patients at high risk for VTE, although there is little data in trauma patients to support such a combination.
		Closer scrutiny of this nonrandomized study revealed that the patients who received LDH were more severely injured (mean ISS 31 vs. 22) and had a longer period of immobilization (17.9 vs. 8.0 days), which certainly could have contributed to the higher DVT rate seen in the LDH prophylaxis group.
	www.east.org /tpg/chap51body.html (1026 words)

	► LDH
		A test that measures the amount of lactate dehydrogenase (LDH) in serum (see also LDH isoenzymes).
		Blood is drawn from a vein (venipuncture) or from a heel, finger, toe, or earlobe.
		The laboratory centrifuges the blood to separate the serum from the cells, and the LDH test is done on the serum.
	www.umm.edu /ency/article/003471.htm (263 words)

	LDH - Lactate dehydrogenase - The Doctors Lounge(TM)
		Lactate dehydrogenase (LDH) is a ubiquitous enzyme present in both plants and animals.
		LDH requires NAD+ (Nicotinamide adenine dinucleotide) as a hydrogen acceptor.
		Measuring LDH in pleural effusion (or pericardial fluid) can help in the distinction between exudates (actively secreted fluid, e.g.
	www.thedoctorslounge.net /rheumatology/labs/ldh.htm (393 words)

	LDH Plumbing Services (Site not responding. Last check: 2007-10-20)
		LDH Plumbing Service provides all standard plumbing services and more, including tunneling and trenching, gas line repair, water heaters, electronic leak detection, camera inspection and hydro jetting.
		LDH Plumbing Services will work with your insurance company and you to complete the work from beginning to end.
		LDH Services can offer our customers emergency water extraction as well as sheetrock repairs.
	onsmartpages.com /ldhplumbingservices/home (185 words)

	Lactate Dehydrogenase Is an AU-rich Element-binding Protein That Directly Interacts with AUF1 -- Pioli et al. 277 (38): ...
		B, purified LDH protein (0.5 µg) was preincubated with indicated concentrations of NAD for 5 min at room temperature and then analyzed for binding to radiolabeled wild type GM-CSF RNA by nitrocellulose filter binding and scintillation counting.
		LDH is bound to AUF1 in the CB3 and THP-1 cell lines.
		LDH and AUF1 associate in vivo and in vitro.
	www.jbc.org /cgi/content/full/277/38/35738 (5639 words)

	Lactic dehydrogenase (LDH) lactate
		It is present in almost all of the tissues in the body and becomes elevated in response to cell damage.
		LDH levels are measured from a sample of blood taken from a vein.
		LDH levels help diagnose heart attack, lung disease, lymphoma, anemia, and liver disease.
	www.webmd.com /hw/lab_tests/tv6985.asp (166 words)

	► LDH isoenzymes
		This is a test that measures the amount of the isoenzymes (different forms) of lactate dehydrogenase (LDH) in serum.
		Measurement of LDH isoenzymes is helpful in determining the location of the tissue damage.
		LDH exists in 5 forms -- isoenzymes, which differ slightly in structure.
	www.umm.edu /ency/article/003499.htm (511 words)

	MedlinePlus Medical Encyclopedia: LDH isoenzymes
		LDH isoenzymes measures the amount of the different forms of lactate dehydrogenase (LDH) in blood serum.
		LDH exists in 5 forms (isoenzymes), which differ slightly in structure.
		The LDH level rises within 24 - 72 hours after a heart attack, peaks in 3 - 4 days, and returns to normal in about 14 days.
	www.nlm.nih.gov /medlineplus/ency/article/003499.htm (705 words)

	PURIFICATION OF LACTIC ACID DEHYDROGENASE (LDH)
		LDH is a tetramer of 35 kd subunits.
		There are 2 types of subunits: and H form which predominates in the heart and an M form that predominates in the muscle and liver.
		The extract is centrifuged at 8850 rpm in the Sorvall centrifuge and the sup (pronounced "soup") is used as the crude extract.
	www.acad.carleton.edu /curricular/BIOL/classes/bio380/lab_protocol.html (3358 words)

	LDH isoenzymes (Test) : WakeMed serving Raleigh, Cary, Wake County, Research Triangle, Johnston County, North Carolina, ...
		This test is usually performed when elevated LDH levels are suspected.
		The enzyme LDH is found in many body tissues like the heart, liver, kidney, skeletal muscle, brain, blood cells, and lungs.
		(This is called a "flipped" LDH pattern.) The LDH level rises within 24 to 72 hours after a heart attack, peaks in 3 to 4 days, and returns to normal in about 14 days.
	www.wakemed.org /13557.cfm (670 words)

	Lactate dehydrogenase test
		Lactic dehydrogenase is present in almost all body tissues, so the LDH test is used to detect tissue alterations and as an aid in the diagnosis of heart attack, anemia, and liver disease.
		Because the LDH enzyme is so widely distributed throughout the body, cellular damage causes an elevation of the total serum LDH.
		The LDH is also elevated in diseases of the liver, in certain types of anemia, and in cases of excessive destruction of cells, as in fractures, trauma, muscle damage, and shock.
	www.healthatoz.com /healthatoz/Atoz/ency/lactate_dehydrogenase_test.jsp (687 words)

	American Family Physician: Eliminating LDH tests in acute myocardial infarction - lactate dehydrogenase - Tips from ...
		Randall and Jones evaluated the institutional impact of eliminating LDH testing from their hospital's cardiac protocol and surveyed 100 U.S. hospitals to determine which tests are routinely performed to rule out myocardial infarction.
		Despite data showing little benefit of routine LDH isoenzyme testing and national consensus recommendations that this testing be abandoned, the authors' nationwide survey of 100 hospitals revealed that two thirds of the hospitals continue to use such testing in their cardiac protocols.
		The authors conclude that routine LDH isoenzyme testing is unnecessary in patients who present within the first 24 hours of a possible acute myocardial infarction.
	www.findarticles.com /p/articles/mi_m3225/is_n4_v57/ai_20383476 (518 words)

	Lactic dehydrogenase isoenzymes in cerebrospinal fluid of children with Guillain-Barre syndrome -- Nussinovitch et al. ...
		Mean LDH activity in the CSF was 33.33 (6.63) U/l.
		Figure 1 Percentage of total LDH in CSF of patients with Guillain–Barré syndrome (B) versus normal patterns (A).
		LDH isoenzyme pattern in the cerebrospinal fluid of patients
	www.fetalneonatal.com /cgi/content/full/archdischild;87/3/255 (1011 words)

	An {alpha}-proteobacterial type malate dehydrogenase may complement LDH function in Plasmodium falciparum: Cloning and ... (Site not responding. Last check: 2007-10-20)
		Pf LDH is shown as a white ribbon, Pf MDH as a yellow ribbon, NADH and oxamate bound to Pf LDH as cyan sticks, NADH and OAA bound to Pf MDH as magenta sticks.
		The residues of the Pf LDH structure are numbered in accordance with Fig. 1.
		LDHs were assayed in the presence of a saturating concentration of pyruvate and NADH, while MDHs were assayed in the presence of saturating concentrations of OAA and NADH.
	content.febsjournal.org /cgi/content/full/271/17/3488 (7209 words)

	Tumor Necrosis Factor-{alpha} Stimulates Lactate Dehydrogenase A Expression in Porcine Cultured Sertoli Cells: ...
		LDH A mRNA was observed in a time-dependent manner.
		FSH-induced LDH A mRNA expression was observed in a time-dependent manner.
		LDH A expression, it is tempting to speculate that the increase
	endo.endojournals.org /cgi/content/full/140/7/3054 (5118 words)

	Elevated serum lactate dehydrogenase (LDH) in non-hospitalized AIDS patients.
		OBJECTIVE: To evaluate use of LDH in early diagnosis of Pneumocystis carinii Pneumonia (PCP) in non-hospitalized AIDS patients (pts) METHODS: Retrospective review of 20 pts taking Zidovudine who had monthly LDH levels as part of routine followup.
		RESULTS: Isolated LDH elevations (normal hepatic transaminases and creatine phosphokinase) were found in 12 out of 20 pts, 6 of whom had prior PCP.
		For LDH greater than 1000 the specificity=0.5, positive predictive value=0.33 for diagnosis of PCP CONCLUSION: Serum LDH is frequently elevated in AIDS pts on Zidovudine, not always associated with an opportunistic infection.
	www.aegis.com /aidsline/1990/sep/M9094344.html (379 words)

	Effects of temperature acclimation on lactate dehydrogenase of cod (Gadus morhua): genetic, kinetic and thermodynamic ...
		Ldh locus classification (A, B and C) is according to Zietara and Skorkowski (1993
		the well-known substrate inhibition of LDH by pyruvate (Fig.
		Relationship between the relative catalytic efficiency of the overall lactate dehydrogenase (LDH) suite in crude homogenates and the total mass of muscle (A) and liver (B).
	jeb.biologists.org /cgi/content/full/207/1/95 (7079 words)

	LDH Landing Nets
		The LDH family of landing nets now consists of 9 different sized nets made from any of a dozen different types of wood.
		LDH Landing Nets offers a net for virtually any situation that discriminating anglers find themselves in.
		The focal point of each net is the handle, which is always a piece of highly figured North American hardwood.
	www.ldhnets.com (379 words)

	Lactate Dehydrogenase (LDH) (Site not responding. Last check: 2007-10-20)
		LDH is found mostly in cardiac muscle, skeletal muscle, and RBC's.
		Although it is found in lesser amounts in the liver, it is useful for specific liver pathology when broken down into it's isoenzymes (Factors 1-5) by electrophoresis.
		But LDH is rarely use to diagnose an AMI presently because much more cardio-specific studies exist (CK, CK-MB, and Troponins)
	mobile.neulabs.com /labstudies/ldh.asp (98 words)

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