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Topic: Oxyhaemoglobin

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	Arg-gingipain Activity Mediates Methaemoglobin Formation by Whole Cells of P. gingivalis (Site not responding. Last check: 2007-10-12)
		We have shown that the haem-pigment of P. gingivalis is composed of the µ-oxo bishaem of iron(III) protoporphyrin IX.
		The process of oxyhaemoglobin oxidation by cells of P. gingivalis is inhibited by NEM and TLCK, suggesting that either Lys- and/or Arg-gingipains mediate this step.
		Objectives: To examine the interactions of oxyhaemoglobin with Kgp- and Rgp-deficient mutants of P. gingivalis W50 to determine the possible roles of Lys- and Arg-gingipains in methaemoglobin formation.
	iadr.confex.com /iadr/2003Goteborg/techprogram/abstract_32744.htm (367 words)

	Accuracy of a pulse oximeter in the measurement of the oxyhaemoglobin saturation -- Chiappini et al. 11 (3): 716 -- ...
		Accuracy of a pulse oximeter in the measurement of the oxyhaemoglobin saturation -- Chiappini et al.
		Accuracy of a pulse oximeter in the measurement of the oxyhaemoglobin saturation
		The aim of the present study was to evaluate the accuracy, in comparison with a reference method, of the Nellcor N-20P pulse oximeter in the assessment of oxyhaemoglobin saturation (Sa,O2).
	erj.ersjournals.com /cgi/content/abstract/11/3/716 (216 words)

	ACP Best Practice No 166: CSF spectrophotometry in the diagnosis of subarachnoid haemorrhage -- Cruickshank 54 (11): ...
		at 450–460 nm on the downslope of the oxyhaemoglobin peak.
		Figure 1 Spectrophotometric scan of oxyhaemoglobin alone; wavelength of absorption peak, 414 nm.
		Figure 2 Spectrophotometric scans of oxyhaemoglobin peak with bilirubin shoulder on downslope at wavelength of 450–460 nm (A and B) and bilirubin alone (C), exhibiting a broad peak with maximum absorbance at wavelength of 453 nm.
	jcp.bmjjournals.com /cgi/content/full/54/11/827 (1713 words)

	Xanthochromia (Site not responding. Last check: 2007-10-12)
		CSF is scanned for pigments spectrophotometrically between wavelengths of 350 and 650nm.
		The latter two peaks have characteristically different shapes from the corresponding peaks of oxyhaemoglobin.
		In case of oxyhaemoglobin, absorbance greater than 0.02 is considered reportable.
	www.ii.bham.ac.uk /clinicalimmunology/neuroimmunology/Xanthochroma.htm (439 words)

	Spectrosopic Analysis - Hawk
		These are the typical absorption-bands of oxyhaemoglobin obtained from dilute solutions of blood.
		Note that in place of the two absorption bands of oxyhaemoglobin we nowhave a single broad band lying almost entirely between D and E. This is the typical spectrum of haemoglobin.
		Add a few drops of Stokes' reagent to the methaemoglobin solution while it is in position before the spectroscope and note the immediate appearance of the oxyhaemoglobin spectrum which is quickly followed by that of hamoglobin.
	www.humboldt.edu /~scimus/Instruments/SpecScp-Hawk/HbSpec.htm (949 words)

	CyberEd® PLATO Science :: Science Education Software
		Explain the three ways in which carbon dioxide formed in the tissues is carried in the blood, and state the percentage of gas carried in the blood by each method.
		Describe the effect of changing pH on the dissociation of oxyhaemoglobin to haemoglobin.
		Oxyhaemoglobin reaching the tissues must then dissociate to give up this oxygen to the cells.
	www.cybered.net /commerce.asp?CatId=310&ProdId=X5002115 (666 words)

	PPS 96' - Protein Interactions: Haemoglobin 2 (Site not responding. Last check: 2007-10-12)
		This is near to the opposite coordination position, but does not occupy it; this coordination site is occupied by oxygen in oxyhaemoglobin.
		Here are orthogonal views of (oxy)haemoglobin illustrating the positions of the proximal and distal histidines in relation to the haem.
		oxyhaemoglobin crystal structure contains only one alpha and one beta subunit (because the other half of the tetramer is related by crystal symmetry).
	www.cryst.bbk.ac.uk /PPS2/course/section12/haemogl2.html (773 words)

	Magnetic Resonance TIP - MRI Database : 'Haemoglobin' (Site not responding. Last check: 2007-10-12)
		This partly explains the special appearance of an aging haematoma in MR imaging and is also the basic of the blood oxygenation level dependent contrast (BOLD) used in functional magnetic resonance imaging of the brain (fMRI).
		Oxyhaemoglobin (the principal haemoglobin in arterial blood) has no substantial magnetic properties, but deoxyhaemoglobin (present in the draining veins after the oxygen has been unloaded in the tissues) is strongly paramagnetic.
		By using T2 weighted gradient echo EPI sequences, which are highly susceptibility sensitive and fast enough to capture the three-dimensional nature of activated brain areas will show an increase in signal intensity as oxyhaemoglobin is diamagnetic and deoxyhaemoglobin is paramagnetic.
	www.mr-tip.com /serv1.php?type=db1&dbs=Haemoglobin (1028 words)

	Troponin T assay – Information/FAQ
		Oxyhaemoglobin measurement in the same sample allows detection of “fresh” bleeding or local bleeding at lumbar puncture (traumatic tap).
		Significant oxyhaemoglobin may be present due to recent SAH and /or traumatic tap.
		a) Significant amounts of oxyhaemoglobin may mask a small increase in bilirubin.
	www.northcumbriahealth.nhs.uk /acute/services/pathology/handbook/biotable/faq/csf_spectrophotometry_faq.html (165 words)

	Sleep apnoea and autonomic function -- Zwillich 53 (Supplement 3): 20 -- Thorax
		During both short and longer apnoeas, oxygen administration prevented oxyhaemoglobin desaturation (not shown) and the decrease in heart rate seen during apnoea when the subjects were breathing room air.
		During room air breathing apnoea is associated with oxyhaemoglobin desaturation and a significant decrease in heart rate.
		Breathing 100% oxygen prior to breath holding (C) eliminated oxyhaemoglobin desaturation and the decrease in heart rate found under previous conditions.
	thorax.bmjjournals.com /cgi/content/full/53/suppl_3/S20 (2287 words)

	IngentaConnect National guidelines for analysis of cerebrospinal fluid for bilir... (Site not responding. Last check: 2007-10-12)
		All CSF specimens are precious and should be analysed no matter how they were transported, where necessary with appropriate notice of the caveats regarding oxyhaemoglobin.
		An increase in CSF bilirubin is the key finding which supports the occurrence of SAH, but it is not specific for this.
		Oxyhaemoglobin occurring on its own is difficult to interpret and may be increased as a result of in vitro haemolysis of red cells introduced into the CSF during lumbar puncture.
	www.ingentaconnect.com /content/rsm/acb/2003/00000040/00000005/art00005 (406 words)

	The haem pigment of the oral anaerobes Prevotella nigrescens and Prevotella intermedia is composed of iron(III) ...
		UV-visible spectra of horse oxyhaemoglobin during incubation with cells of (a) Pr.
		Panel (c) shows the result of incubation of oxyhaemoglobin in the absence of bacterial cells, in which the Soret band (403 nm; arrowed) is attributable to the presence of aquomethaemoglobin.
		Panel (c) shows the results of incubation of oxyhaemoglobin in the absence of bacterial cells.
	mic.sgmjournals.org /cgi/content/full/149/7/1711 (3805 words)

	CSF spectrophotometry in the diagnosis of subarachnoid haemorrhage -- Beetham et al. 55 (6): 479 -- Journal of Clinical ...
		oxyhaemoglobin is discounted as evidence to support SAH.
		of bilirubin alone without oxyhaemoglobin is a rare occurrence
		authors is their recommendation that oxyhaemoglobin is discounted
	jcp.bmjjournals.com /cgi/content/full/55/6/479 (769 words)

	BORL: Tissue spectra
		The spectra are sampled at 1 nm intervals.
		Specific extinction coefficient of fetal oxyhaemoglobin (450 nm - 630 nm)
		Specific extinction coefficient of fetal oxyhaemoglobin (600 nm - 800 nm)
	www.medphys.ucl.ac.uk /research/borl/research/NIR_topics/spectra/spectra.htm (1387 words)

	Fortnightly Review: Pulse oximetry: a practical review -- Hanning and Alexander-Williams 311 (7001): 367 -- BMJ
		error) at oxyhaemoglobin saturations of 70-99% as it is unethical
		Examination of the oxyhaemoglobin dissociation curve (fig 1)
		Management of hypoxaemia Oxyhaemoglobin saturation Management 90-95% Measure oxyhaemoglobin saturation regularly, especially at night If value is unexpected, check signal quality and probe Investigate cause of hypoxaemia 80-90% As above and give oxygen until oxyhaemoglobin saturation(>/=)90% <80% As above and start continuous monitoring Consider ventilatory support
	bmj.bmjjournals.com /cgi/content/full/311/7001/367?ijkey=68824f49d29032bdd0e78b4dc1a55c00ad0491eb&keytype2=tf_ipsecsha (2585 words)

	Is timing of haemorrhage by spectrophotometry similar for haemorrhages in the subdural and subarachnoid space? -- ...
		We investigated whether quantifying the spectral peaks for oxyhaemoglobin,
		in oxyhaemoglobin release predominantly between 2 and 12 hours
		reaction, and when the concentration of oxyhaemoglobin rises
	adc.bmjjournals.com /cgi/content/extract/90/11/1203 (178 words)

	Comparative Analysis of Autoxidation of Haemoglobin -- Jensen 204 (11): 2029 -- Journal of Experimental Biology
		Examples of the time-dependence of the autoxidation reaction for hagfish (Myxine glutinosa) and carp (Cyprinus carpio) oxyhaemoglobin (oxyHb) at various temperatures.
		Temperature-dependence of autoxidation of hagfish, carp, yellowfin tuna, lamprey and pig oxyhaemoglobins.
		The present data show that autoxidation of oxyhaemoglobin is
	jeb.biologists.org /cgi/content/full/204/11/2029 (3053 words)

	In vitro oxyhaemoglobin saturation measurements in haemoglobin solutions using fibreoptic pulmonary artery catheters -- ...
		In vitro oxyhaemoglobin saturation measurements in haemoglobin solutions using fibreoptic pulmonary artery catheters -- KONG et al.
		In vitro oxyhaemoglobin saturation measurements in haemoglobin solutions using fibreoptic pulmonary artery catheters
		Address for correspondence: Anesthesiology Research Labs, University of Maryland, Room 534 MSTF Building, 10 South Pine Street, Baltimore, MD 21201, USA.
	bja.oxfordjournals.org /cgi/content/abstract/74/2/201 (293 words)

	A model to describe the rate of oxyhaemoglobin desaturation during apnoea -- Farmery and Roe 76 (2): 284 -- British ...
		A model to describe the rate of oxyhaemoglobin desaturation during apnoea -- Farmery and Roe 76 (2): 284 -- British Journal of Anaesthesia
		A model to describe the rate of oxyhaemoglobin desaturation during apnoea
		We have developed a model to describe the rate of oxyhaemoglobin
	bja.oxfordjournals.org /cgi/content/abstract/76/2/284 (585 words)

	activity 1 for hsc bio
		As blood moves around the body its chemical composition changes.
		Which of the following organs would you expect to increase the blood's oxyhaemoglobin?
		As blood passes through the kidneys there is a change in its chemical decomposition.
	www.scu.edu.au /schools/edu/student_pages/sprbo2002/lneinert/act1.html (637 words)

	Recommendations for CSF analysis in subarachnoid haemorrhage -- Beetham 75 (4): 528 -- Journal of Neurology, ...
		that it was the presence of oxyhaemoglobin and bilirubin, as
		on what quantitative amounts of oxyhaemoglobin or bilirubin
		The occurrence of oxyhaemoglobin alone is most often artefactual,
	jnnp.bmjjournals.com /cgi/content/full/75/4/528 (522 words)

	Theophylline and acetazolamide reduce sleep-disordered breathing at high altitude -- Fischer et al. 23 (1): 47 -- ...
		pulse rate, oxyhaemoglobin saturation and arterial blood gases
		with a 4% (or more) decrease in arterial oxyhaemoglobin saturation
		Effects of high-altitude periodic breathing on sleep and arterial oxyhaemoglobin saturation.
	erj.ersjournals.com /cgi/content/full/23/1/47 (2260 words)

	Changes in tissue oxyhaemoglobin concentration measured using multichannel near infrared spectroscopy during internal ...
		Changes in tissue oxyhaemoglobin concentration measured using multichannel near infrared spectroscopy during internal carotid angiography -- Germon et al.
		Changes in tissue oxyhaemoglobin concentration measured using multichannel near infrared spectroscopy during internal carotid angiography
		To develop an in vivo model for testing spatially resolved spectroscopy and quantified near infrared spectroscopy (NIRS) cerebral
	jnnp.bmjjournals.com /cgi/content/full/63/5/660 (2791 words)

	oxyhaemocyanin Marine Ocean Science ePrints Archive Plymouth - A colorimetric
		Index - Oxygenic to ozone layer Oxygonal Oxygonial OxYhaemacyanin Oxyhaemocyanin Oxyhaemoglobin Oxyhemoglobin Oxyhydrogen Oxylebius Oxylebius Return
		TECHNOLOGY The O-O IR stretching frequency in TpCu2 -O2 is very close to that found in oxyhaemocyanin a protein transporting oxygen in arthopods and molluscs 33
		Index - Oxygenic to ozone layer Oxygonal: Oxygonial: OxYhaemacyanin: Oxyhaemocyanin: Oxyhaemoglobin: Oxyhemoglobin: Oxyhydrogen: Oxylebius: Oxylebius Return to the English dictionary
	correctol.host6.ranusa.com /1141041079.html (812 words)

	Pulmonary manifestations of sickle cell disease -- Siddiqui and Ahmed 79 (933): 384 -- Postgraduate Medical Journal
		Nocturnal oxyhaemoglobin desaturation has been reported in SCD
		lung disease, and an abnormality in oxyhaemoglobin affinity.
		Although it has been shown that low nocturnal oxygen saturation
	pmj.bmjjournals.com /cgi/content/full/79/933/384 (4097 words)

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