Publications

Peer reviewed published papers

Shearer MJ and Newman P. Metabolism and cell biology of vitamin K. Thrombosis and Haemostasis. 2008; 100(4):530-47

Shearer MJ. Vitamin K deficiency bleeding (VKDB) in early infancy. Blood Review. 2008 (epub ahead of print).

Harrington DJ, Gorska R, Wheeler R, Davidson S, Murden S, Morse C, Shearer MJ, Mumford AD. Pharmacodynamic resistance to warfarin is associated with nucleotide substitutions in VKORC1. Journal of Thrombosis and Haemostasis. 2008; 6(10):1663-70.

Harrington DJ, Western H, Seton-Jones C, Rangarajan S, Beynon T and Shearer MJ. Study of the prevalence of vitamin K deficiency in patients with cancer referred to a hospital palliative care team and its association with abnormal haemostasis. Journal of Clinical Patholgy.  2008; 61(4):537-40.

Mumford AD, Harrington DJ and Shearer MJ. The mechanisms and management of warfarin resistance. Thrombus 2007; 11(1).

Harrington DJ, Booth SL, Card DJ and Shearer MJ. Excretion of the Urinary 5C- and 7C-Aglycone Metabolites of Vitamin K by Young Adults Responds to Changes in Dietary Phylloquinone and Dihydrophyllloquinone Intakes. The Journal of Nutrition. 2007; 137:1763-1768.

Kaptoge S, Dalzell N, Folkerd E, Doody D, Khaw KT, Beck TJ, Loveridge N, Mawer EB, Berry JL, Shearer MJ, Dowsett M, Reeve J. Sex hormone status may modulate rate of expansion of proximal femur diameter in older women alongside other skeletal regulators. Journal of Clinical Endocrinology and Metabolism 2007; 92:304-313.

Bolton-Smith C, McMurdo MET, Paterson CR, Mole PA, Harvey JM, Fenton ST, Prynne CJ, Mishra GD, Shearer MJ. Two-year randomized controlled trial of vitamin K₁ (phylloquinone) and vitamin D₃ plus calcium on the bone health of older women. Journal of Bone and Mineral Research 2007; 22:509-519.

Clarke P and Shearer MJ. Vitamin K deficiency bleeding: the readiness is all. Archives of Disease in Childhood, 2007; 92:741-743.

Clark P, Shearer MJ. Vitamin K deficiency bleeding after missed prophylaxis: rapid synergistic effect of vitamin K therapy on hemostasis. Southern Medical Journal (Letter) 2007; 100: 612-613.

Thijssen HHW, Vervoort LMT, Schurgers LJ, Shearer MJ. Menadione is a metabolite of oral vitamin K. British Journal of Nutrition 2006; 95: 260-266.

Cockayne S, Adamson J, Lanham-New S, Shearer MJ, Gilbody S, Torgerson DJ. Vitamin K and the prevention of fractures: systematic review and meta-analysis of randomized controlled trials. Archives of Internal Medicine 2006; 166: 1256-1261.

Kruger MC, Booth CL, Coad J, Schollum LM, Kuhn-Sherlock B, Shearer MJ. Effect of calcium fortified milk supplementation with or without vitamin K on biochemical markers of bone turnover in premenopausal women. Nutrition 2006; 22: 1120-1128.

Clarke P, Mitchell SJ, Wynn R, Sundaram S, Speed V, Gardener E, Roeves D, Shearer MJ. Vitamin K prophylaxis for preterm infants: a randomized controlled trial of 3 regimens. Pediatrics 2006; 118: e1657-1666.

Beavan SR, Prentice A, Stirling DM, Dibba B, Yan L, Harrington DJ and Shearer MJ. Ethnic differences in osteocalcin γ-carboxylation, plasma phylloquinone (vitamin K₁) and apolipoprotein E genotype. Eur J Clin Nutr. 2005; 59(1):72-8

Merette SAM, Harrington DJ, Shearer MJ and Savidge GF. The diagnosis and monitoring of superwarfarin poisoning by liquid chromatography-electrospray ionisation-tandem mass spectrometry. Blood 2005;106(11):87B-87B.

Clarke P, Mitchell SJ, Sundaram S, Sharma V, Wynn R and Shearer MJ. Vitamin K status of preterm infants with a prolonged prothrombin time. Acta Paediatr 2005;94(12):1822-4.

Conway SP, Wolfe SP, Brownlee KG, White H, Oldroyd B, Truscott JG, Harvey JM and Shearer MJ. Vitamin K status among children with cystic fibrosis and its relationship to bone mineral density and bone turnover. Pediatrics, 2005; 115(5):1325-31.

Harrington DJ, Soper R, Edwards C, Savidge GF, Hodges SJ and Shearer MJ. Determination of the urinary aglycone metabolites of vitamin K by HPLC with redox-mode electrochemical detection. Journal of lipid research, 2005; 46:1053-1060.

Pavlu J, Harrington DJ, Voong K, Savidge GF, Jan-Mohamed R and Kaczmarski R. Superwarfarin poisoning. Lancet, 2005; 365:628.

Pereira SP, Rowbotham D, Fitt S, Shearer MJ, Wendon and Williams R. Pharmacokinetics and efficacy of oral versus intravenous mixed-miceller phylloquinone (vitamin K(1)) in severe acute liver disease. Journal of hepatology, 2005; 42(3):365-70.

Harrington DJ, Underwood S, Morse C, Shearer MJ, Tuddenham EGD and Mumford AD. Pharmacodynamic resistance to warfarin associated with a Val66Met sustitution in vitamin K epoxide reductase complex subunit 1. Thrombosis and Haemostasis, 2005; 93:23-6.

Beavan SR, Prentice A, Stirling DM, Dibba B, Yan L, Harrington DJ and Shearer MJ. Ethnic differences in osteocalcin gamma-carboxylation, plasma phylloquinone (vitamin K1) and apolipoprotein E genotype. European Journal of Clinical Nutrition, 2005; 59(1):72-81.

Wang LY, Bates CJ, Yan L, Harrington DJ, Shearer MJ and Prentice A. Determination of phylloquinone (vitamin K1) in plasma and serum by HPLC with fluorescence detection. Clinica Chimica acta, 2004; 347:199-207.

Harrington DJ, Malefora A, Schmeleva V, Kapustin S, Papayan L, Blinov M, Harrington P, Mitchell M, Savidge GF. Genetic Variations Observed in Arterial and Venous Thromboembolism – Relevance for Therapy, Risk Prevention and Prognosis. Clinical Chemistry and Laboratory Medicine, 2003; 41(4):496-500.

Pereira SP, Shearer MJ, Williams R and Mieli-Vergani G, Intestinal absorption of mixed micellar phylloquinone (vitamin K1) is unreliable in infants with conjugated hyperbilirubinaemia: implications for oral prophylaxis of vitamin K deficiency bleeding, Archives of Disease in Childhood, Fetal & Neonatal Edition, 2003; 88(2):113-8.

Sobczynska-Malefora A, Harrington DJ, Rangarajan S, Kovacs J, Shearer MJ and Savidge GF. Hyperhomocysteinemia and B-vitamin status on completion of oral anticoagulation therapy in patients with a history of venous thromboembolism. Clinical Chemistry and Laboratory Medicine 2003; 41(11):1493–7.

Clarke P and Shearer MJ. Severe liver haemorrhage in extremely low birthweight infants. Acta Paediatrica 2003; 92: 636.

O'Shaughnessy D, Allen C, Woodcock T, Pearce K, Harvey J, Shearer MJ. Echis time, under-carboxylated prothrombin and vitamin K status in intensive care patients. Clinical and Laboratory Haematology 2003; 25: 397-404.

Shmeleva VM, Kapustin SI, Papayan LP, Sobczynska-Malefora A, Harrington DJ and Savidge GF. Prevalence of hyperhomocysteinemia and the MTHFR C677T polymorphism in patients with arterial and venous thrombosis from North Western Russia. Thrombosis Research, 2003; 11(6):351-6.

Thane C.W, C.J Bates, Shearer M.J, Unadkat N, Harrington D.J, Paul A.A, Prentice A. and Bolton-Smith C. Plasma phylloquinone (vitamin K₁) concentration and its relationship to intake in a national sample of British elderly people. British Journal of Nutrition, 2002; 87:615-622.

Thane CW. Paul AA. Bates CJ. Bolton-Smith C. Prentice A. Shearer MJ. Intake and sources of phylloquinone (vitamin K1): variation with socio-demographic and lifestyle factors in a national sample of British elderly people. British Journal of Nutrition, 2002; 87(6):605-13.

Schurgers LJ. Shearer MJ. Soute BA. Elmadfa I. Harvey J. Wagner KH. Tomasch R. Vermeer C. Novel effects of diets enriched with corn oil or with an olive oil/sunflower oil mixture on vitamin K metabolism and vitamin K-dependent proteins in young men. Journal of Lipid Research, 2002; 43(6):878-4.

Newman P. Bonello F. Wierzbicki AS. Lumb P. Savidge GF. Shearer MJ. The uptake of lipoprotein-borne phylloquinone (vitamin K1) by osteoblasts and osteoblast-like cells: role of heparan sulfate proteoglycans and apolipoprotein European Journal of Bone & Mineral Research, 2002; 17(3):426-33.

Shearer MJ. Role of vitamin K and Gla proteins in the pathophysiology of osteoporosis and vascular calcification. Current Opinion in Clinical Nutrition & Metabolic Care, 2000;3(6):433-8.

Shearer MJ. Bolton -Smith C. The UK food database for vitamin K and why we need it. Food Chemistry, 2000; 68:213-18.

Bolton-Smith C, Price RJG, Fenton ST, Harrington DJ, Shearer MJ. Compilation of a provisional UK database for the phylloquinone (vitamin K1) content of foods. British Journal of Nutrition, 2000; 83:389-399.

Humpl T. Bruhl K. Brzezinska R. Hafner G. Coerdt W. Shearer MJ. Fatal late vitamin K-deficiency bleeding after oral vitamin K prophylaxis secondary to unrecognized bile duct paucity. Journal of Pediatric Gastroenterology & Nutrition, 1999; 29(5):594-7.

Greer FR. Marshall SP. Severson RR. Smith DA. Shearer MJ. Pace DG. Joubert PH. A new mixed micellar preparation for oral vitamin K prophylaxis: randomised controlled comparison with an intramuscular formulation in breast fed infants. Archives of Disease in Childhood, 1998; 79(4):300-5.

McCarthy PT, Harrington DJ, Shearer MJ. Assay of phylloquinone in plasma by high-performance liquid chromatography with electrochemical detection. Methods in Enzymology, 1997; 282:421-433.

McCarthy PT, Cox AD, Harrington DJ, Everly RS, Hampton E, Al Sabh AI, Massey E, Jackson H, Ferguson T. Covert poisoning with difenacoum: clinical and toxicological observations. Human and Experimental Toxicology, 1997; 16:166-170.

Schubiger G. Gruter J. Shearer MJ. Plasma vitamin K1 and PIVKA-II after oral administration of mixed-micellar or cremophor EL-solubilized preparations of vitamin K1 to normal breast-fed newborns. Journal of Pediatric Gastroenterology & Nutrition, 1997; 24(3):280-4.

Kohlmeier M. Saupe J. Shearer MJ. Schaefer K. Asmus G. Bone health of adult hemodialysis patients is related to vitamin K status. Kidney International, 1997; 51(4):1218-21.

Bolton-Smith CA. Shearer MJ. Dietary reference values for vitamin K: where are we now? Nutrition and Food Science, 1997; 6:242-5

Shearer MJ. The roles of vitamins D and K in bone health and osteoporosis prevention. Proceedings of the Nutrition Society, 1997; 56(3):915-37.

Roberts NB. Holding Jd. Walsh HPJ. Klenerman L. Helliwell T. King D. Shearer MJ. Serial changes in serum vitamin K1, triglyceride, cholesterol, osteocalcin and 25-hydroxyvitamin D3 in patients after hip repacement for fractured neck of femur or osteoarthritis. European Journal of Clinical Investigation. 1996; 26:24-29.

Shearer MJ. Bach A. Kohlmeier M. Chemistry, nutritional sources, tissue distribution and metabolism of vitamin K with special reference to bone health. Journal of Nutrition, 1996; 126:1181S-6S.

Kohlmeier M. Salomon A. Saupe J. Shearer MJ. Transport of vitamin K to bone in humans. Journal of Nutrition, 1996; 126:1192S-6S.

Shearer MJ. Vitamin K. Lancet, 1995; 345(8944):229-34.

Elston TN. Dudley JM. Shearer MJ. Schey SA. Vitamin K prophylaxis in high-dose chemotherapy, Lancet, 1995; 345(8959):1245.

Shearer MJ. Vitamin K: its physiological role and the assessment of clinical and subclinical deficiency states. Journal of the International Federation of Clinical Chemistry, 1995; 7:88-95

Kohlmeier M. Saupe J. Drossel HJ. Shearer MJ. Variation of phylloquinone (vitamin K1) concentrations in hemodialysis patients. Thrombosis & Haemostasis, 1995; 74(5):1252-4.

O'Brien DP. Shearer MJ. Waldron RP. Horgan PG. Given HF. The extent of vitamin K deficiency in patients with cholestatic jaundice: a preliminary communication. Journal of the Royal Society of Medicine, 1994; 87(6):320-2.

Saupe J. Shearer MJ. Kohlmeier M. Phylloquinone transport and its influence on gamma-carboxyglutamate residues of osteocalcin in patients on maintenance hemodialysis. American Journal of Clinical Nutrition, 1993; 58(2):204-8.

Schubiger G. Tonz O. Gruter J. Shearer MJ. Vitamin K1 concentration in breast-fed neonates after oral or intramuscular administration of a single dose of a new mixed-micellar preparation of phylloquinone. Journal of Pediatric Gastroenterology & Nutrition, 1993; 16(4):435-9.

von Kries R, Kordass U, Shearer MJ, Göbel U. Idiopathic late hemorrhagic disease of newborn and conjugated hyperbilirubinemia. Journal of Pediatric Gastroenterlolgy and Nutrition 1993; 16: 328-330.

Pietschnig B. Haschke F. Vanura H. Shearer MJ. Veitl V. Kellner S. Schuster E. Vitamin K in breast milk, no influence of maternal dietary intake. European Journal of Clinical Nutrition. 1993; 47:209-215.

Shearer MJ. Kries RV. Saupe J. Comparative aspects of human vitamin K metabolism and nutriture. Journal of Nutritional Science & Vitaminology, 1992; 413-6.

Shearer MJ. Vitamin K metabolism and nutriture. Blood Reviews, 1992; 6(2):92-104.

Butcher GP. Shearer MJ. MacNicoll AD. Kelly MJ. Ind PW. Difenacoum poisoning as a cause of haematuria. Human & Experimental Toxicology, 1992; 11(6):553-4.

von Kries R. Shearer MJ. Widdershoven J. Motohara K. Umbach G. Gobel U. Des-gamma-carboxyprothrombin (PIVKA II) and plasma vitamin K1 in newborns and their mothers. Thrombosis & Haemostasis, 1992;68(4):383-7.

Williams AT. Shearer MJ. Oyeyi J. Aitchison RG. Newland AC. Schey SA. Serum osteocalcin in the management of myeloma. European Journal of Cancer,1992; 29A(1):140-2.

Hodges SJ. Pilkington MJ. Stamp TC. Catterall A. Shearer MJ. Bitensky L. Chayen J. Depressed levels of circulating menaquinones in patients with osteoporotic fractures of the spine and femoral neck. Bone, 1991;12(6):387-9.

Ross PJ. Shearer MJ. Diplock AT. Schey SA. A fibroblast cell culture model to study vitamin K metabolism and the inhibition of vitamin K epoxide reductase by known and suspected antagonists. British Journal of Haematology, 1991; 77(2):195-200.

Mathers JC. Fernandez F. Hill MJ. McCarthy PT. Shearer MJ. Oxley A. Dietary modification of potential vitamin K supply from enteric bacterial menaquinones in rats. British Journal of Nutrition, 1990; 63(3):639-52.

Hodges SJ. Pilkington MJ. Shearer MJ. Bitensky L. Chayen J. Age-related changes in the circulating levels of congeners of vitamin K2, menaquinone-7 and menaquinone-8. Clinical Science, 1990; 78(1):63-6.

Shearer MJ. Vitamin K and vitamin K-dependent proteins. British Journal of Haematology, 1990; 75(2):156-62.

Shearer MJ. Bechtold H. Andrassy K. Koderisch J. McCarthy PT. Trenk D. Jahnchen E. Ritz E. Mechanism of cephalosporin-induced hypoprothrombinemia: relation to cephalosporin side chain, vitamin K metabolism, and vitamin K status. Journal of Clinical Pharmacology, 1998; 28(1):88-95.

Cohen H. Scott SD. Mackie IJ. Shearer MJ. Bax R. Karren SJ. Machin SJ. The development of hypoprothrombinaemia following antibiotic therapy in malnoourished patients with low serum vitamin K1 levels. British Joournal of Haematology, 1988; 68: 63-66.

Rowe PH, Taylor PR, Shearer MJ, Owen WJ. Vitamin A deficiency secondary to pancreatic carcinoid. Acta Chir Scand 1988; 154: 487-488.

Von Kries R. Shearer MJ. Gobel U. Vitamin K in infancy. European Journal of Pediatrics, 1988; 147(2):106-12.

Cohen H. Mackie IJ. Walshe K. Shearer MJ. Bax R. Pozniak A. Moulesdale M. Machin SJ. The effects of Cefotetan disodium on haemostasis. Journal of Hospital Infection, 1987; 10:51-57.

von Kries R. Shearer MJ, McCarthy PT. Haug M. Harzer G. Gobel U. Vitamin K1 content of maternal milk: influence on the stage of lactation, lipid composition and vitamin K1 supplements given to the mother. Pediatric Research, 1987; 22: 513-517.

Shearer MJ. Assay of K vitamins in tissues by high-performance liquid chromatography with special reference to ultraviolet detection. Methods in Enzymology, 1986; 123:235-51.

Shearer MJ. Assay of coumarin antagonists of vitamin K in blood by high-performance liquid chromatography. Methods in Enzymology, 1986; 123:223-34.

Mackie IJ. Walshe K. Cohen H. McCarthy P. Shearer MJ. Scott SD. Karren SJ. Machin SJ. Effects of N-methyl-thiotetrazole cephalosporin on haemostasis in patients with reduced serum vitamin K1 concentrations. Journal of Clinical Pathology, 1986; 39:1245-9.

Hart JP. Shearer MJ. McCarthy PT. Enhanced sensitivity for the determination of endogenous phylloquinone (vitamin K1) in plasma using high-performance liquid chromatography with dual-electrode electrochemical detection. Analyst. 1985; 110(10):1181-4.

McNinch AW. Upton C. Samuels M. Shearer MJ. McCarthy P. Tripp JH. L'E Orme R. Plasma concentrations after oral or intramuscular vitamin K1 in neonates. Archives of Disease in Childhood, 1985; 60(9):814-8.

Hart JP. Shearer MJ. Klenerman L. Catterall A. Reeve J. Sambrook PN. Dodds RA. Bitensky L. Chayen J. Electrochemical detection of depressed circulating levels of vitamin K1 in osteoporosis. Journal of Clinical Endocrinology & Metabolism, 1985; 60(6):1268-9.

Hart JP. Shearer MJ. McCarthy PT. Rahim S. Voltammetric behaviour of phylloquinone (vitamin K1) at a glassy-carbon electrode and determination of the vitamin in plasma using high-performance liquid chromatography with electrochemical detection. Analyst. 1984;109(4):477-81.

Shearer MJ. High-performance liquid chromatography of K vitamins and their antagonists. Advances in Chromatography, 1983; 21:243-301.

Shearer MJ. Rahim S. Barkhan P. Stimmler L. Plasma vitamin K1 in mothers and their newborn babies. Lancet, 1982; 2(8296):460-3.

Haroon Y. Shearer MJ. Rahim S. Gunn WG. McEnery G. Barkhan P. The content of phylloquinone (vitamin K1) in human milk, cows' milk and infant formula foods determined by high-performance liquid chromatography. Journal of Nutrition, 1982; 112(6):1105-17.

Haroon Y, Shearer MJ, Barkhan P. Resolution of menaquinones (vitamins K2) by high-performance liquid chromatography. Journal of Chromatography, 1981; 206: 333-342.

McBurney A. Shearer MJ. Barkhan P. Preparative isolation and characterization of the urinary aglycones of vitamin K1. Biochemical Medicine. 24(3):250-67, 1980 Dec.

Haroon Y. Shearer MJ. McEnery G. Allan VE. Barkhan P. Assay of vitamin K1 (phylloquinone) by high performance liquid chromatography: values for human and cow's milk. Proceedings of the Nutrition Society, 1980; 39(2):49.

Haroon Y. Shearer MJ. Barkhan P. Resolution of phylloquinone (vitamin K1), phylloquinone 2,3-epoxide, 2-chloro-phylloquinone and their geometric isomers by high-performance liquid chromatography. Journal of Chromatography, 1980; 200:293-299

McBurney A. Shearer MJ. Barkhan P. Changes in the urinary metabolites of phylloquinone (vitamin K1) in man following therapeutic anticoagulation with warfarin. Biochemical Pharmacology, 1978; 27(3):273-8.

Shearer MJ. McBurney A. Breckenridge AM. Barkhan P. Effect of warfarin on the metabolism of phylloquinone (vitamin K1):dose-response relationships in man. Clinical Science & Molecular Medicine, 1977; 52(6):621-30.

Barkhan P, Shearer MJ. Metabolism of vitamin K₁ (phylloquinone) in man. Royal Society of Medicine 1977; 70:93-96.

Shearer MJ. McBurney A. Breckenridge A. Barkhan P. Dose - response relationship between warfarin and the metabolism of phylloquinone (vitamin K1) in man. International Journal for Vitamin & Nutrition Research, 1976; 46(2):215-9.

Gover PA. Ingram GI. Cork MS. Holland L. Hopkins RP. Callaghan P. Barkhan P. Shearer MJ. Bleeding from self-administration of phenindione: a detailed case study. British Journal of Haematology, 1976; 33(4):551-64.

Shearer MJ. McBurney A. Barkhan P. Studies on the absorption and metabolism of phylloquinone (vitamin K1) in man. Vitamins & Hormones, 1974; 32:513-42.

Scott RB. Lee M. Mallinson CN. Shearer MJ. Proceedings: Failure to demonstrate a bile salt-independent pathway for absorption of vitamin K1 in man. Gut, 1973; 14(10):825.

Shearer MJ. Barkhan P. Studies on the metabolites of phylloquinone (vitamin K1 ) in the urine of man. Biochimica et Biophysica Acta, 1973; 297(2):300-12.

Shearer MJ. McBurney A. Barkhan P. Effect of warfarin anticoagulation on vitamin-K1 metabolism in man. British Journal of Haematology, 1972; 24(4):471-9.

Shearer MJ. Mallinson CN. Webster GR. Barkhan P. Clearance from plasma and excretion in urine, faeces and bile of an intravenous dose of tritiated vitamin K1 in man. British Journal of Haematology, 1972; 22(5):579-88.

Shearer MJ. Mallinson C. Webster GR. Barkhan P. Studies in man with tritiated vitamin K1 administered intravenously. Clinical Science, 1971; 40(6):23P.

Shearer MJ. Mallinson CN. Webster GR. Barkhan P. Absorption of tritiated vitamin K1 in patients with fat malabsorption. Gut, 1970;11(12):1063-4.

Shearer MJ. Barkhan P. Webster GR. Absorption and excretion of an oral dose of tritiated vitamin K1 in man. British Journal of Haematology, 1970; 18(3):297-308.

Abstracts, letters, meetings and other articles

Sobczynska-Malefora A, Harrington DJ, Lomer MCE, White R, Rangarajan S, Shearer MJ. The folate and vitamin B12 status of patients at the beginning of warfarin therapy. FASEB 2008

Brandao LR, Harrington DJ, Cohen E, Finkelstein Y, Thompson M and Verjee Z. Superwarfarin Exposure and Severe Coagulopathy; Treatment with Prolonged Oral Vitamin K Supplementation. Pediatric Academic Societies' Meeting, abstract, Toronto 2007.

Harrington DJ, Clarke P, Mitchell SH, Voong K, Card DJ and Shearer MJ. Urinary excretion of vitamin K metabolites in term and preterm infants. ISTH 2007.

Harrington DJ, Seton-Jones C, Rangarajan S, Card DJ, Gorska R, Voong K, Shearer MJ, Beynon T and Western H. Vitamin K deficiency in patients with cancer referred to a hospital palliative care team. ISTH 2007.

Harrington DJ, Branfdao LR, Cohen E, Finkelstein Y, Thompson M and Verjee Z. Superwarfarin exposure and severe coagulopathy in two infant immigrants: unequivocal diagnosis using novel biomarkers. ASPHO 2007.

Gorska R, Harrington DJ, Shearer MJ. Determination of free menadione in human plasma by HPLC with fluorescence detection after on-line platinum reduction. Focus 2007.

Pettitt C, Hamilton S, Sobczynska-Malefora A, Harrington DJ, Shearer MJ and Lomer MCE. Do dietary changes associated with oral anticoagulation therapy affect vitamin K and folate intakes? British Dietetic Association 2006.

Card DJ, Wilkinson M, B Baburajan, DJ Harrington, GF Savidge and MJ Shearer. Monitoring vitamin K deficiency and its resolution in a patient with congenital bile salt deficiency and osteopenia. Annals of Clinical Biochemistry; 43 Suppl, 2006; p69 W5.

Sobczynska-Malefora A, Lomer M.C.E, Pettitt C, Hamilton S, Harrington DJ, Shearer MJ, Roeves D, Rangarajan S,Savidge GF. Hyperhomocysteinemia and nutrient intakes in patients undergoing oral anticoagulant therapy; Annals of Clinical Biochemistry; 43 Suppl, 2006; p71 W9.

Chilcott JL, Harrington DJ, Shearer MJ, Morse C, Mumford AD. Mutations in VKORC1 are associated with pharmacodynamic resistance to warfarin. Brit J of Haem 2006; 133: 25-25 Suppl. 1

Harrington DJ, Clarke P, Card DJ, Savidge GF, Mitchell SJ, Soper R, Hodges SJ, Shearer MJ. Urinary excretion of vitamin K catabolites in term and preterm infants. Early Human Development, 2004; 78:142-3.

Shemeleva VM., Shitikova AS, Malefora A, Harrington DJ, Savidge GF. Increased platelet activity in hyperhomocysteinemic patients. Journal of thrombosis and haemostasis, 2003; 1 supplement, P0411.

Shemeleva V., Kapustin S., Dmitrieva A., Sobczynska-Malefora A., Harrington D.J., Savidge G.F. C677T substitution in the MTHFR Gene is a significant predictor of hyperhomocysteinemia in patients with thrombotic disorders in North-Western Russia. Clinical Chemistry and Laboratory Medicine, 2003; 41 (3) A34 .

Engova D, Duggan C, Shearer MJ, Arain S, Harrington DJ, Mcelwaine S. Cotter F, Madhan M, Maccallum P. Multivariate investigation of determinants of oral anti-coagulant stability. Journal of Thrombosis and Haemostasis 2003; 1 supplement, P1933.

Harrington DJ, Soper R, Edwards C, Savidge GF, Hodges S and Shearer MJ. Measurement of Urinary Metabolites of Vitamin K. Bone, 2002; 30 No 3, (suppl.) 28S

Engova D, Duggan C, Shearer M, Arain S, Harrington D, McElwain S, Cotter F, Madhani M, MacCallum P. Influence of Cytochrome P450 CYP2C9 Polymorphisms on S- and R-Enantiomers of Warfarin. British Journal of Haematology, 2002, 117 (suppl. 1), 94-100

Shmeleva V, Kapustin S, Filanovskaya L, Blinov M, Malefora A.S, Harrington DJ and Savidge GF. Arterial Occlusive Diseases in North West Russia and Genetic Polymorphisms. Cause or Effect? Proceedings of 6^th International Symposium on Global risk of coronary heart disease and stroke. 2002.

Sobczynska-Malefora A, Rangarajan S,Harrington DJ, Shearer MJ, Savidge GF. Prevalence of Hyperhomocysteinemia in Patients with a History of Thromboembolic Disease after Cessation of Oral Anticoagulation Therapy. Blood,2002; 100(11), 701a Ref no. 2761.

Shmeleva V, Kapustin S, Saltikova N, Sobczynska-Malefora A, Savidge G.F, Harrington DJ. Prevalence of hyperhomocysteinemia and the MTHFR C677T polymorphism in patients with arterial and venous thrombosis from North Western Russia. Thrombosis and Haemostasis, 2001; 86, CD 2628

Fenton ST, Bolton-smith C, Harrington DJ, Shearer MJ. Intra- and inter-variability and lack of seasonal variation of plasma phylloquinone (vitamin K₁) for Scottish men and Women. Proceedings of the Nutrution Society, 2000; 59:32A

Alvaran CB, Harrington DJ and Shearer MJ. The Electrochemical Detection of Phylloquinone (Vitamin K₁) in Food Matrices. Proceedings of the Nutrution Society 2000; 59

Harrington DJ and Shearer MJ. Vitamin K Determination : Are we talking the same language? Proc. Nutr Soc, 2000; 59

Harrington DJ, Nolan L, Savidge GF, Shearer MJ. Assay of vitamin K₁ (phylloquinone ) in plasma by HPLC: a method comparison study. Blood Coagulation and Fibrinolysis, 1998; 9:22-23.

Bolton-Smith C, Price RJG, Fenton ST, Harrington DJ, Shearer MJ. The relationship between plasma and dietary phylloquinone (vitamin K₁) in Scottish adults. Proceedings of the Nutrition Society, 1998; 57:148A.

Fenton ST, Price RJ, Bolton-Smith CA, Harrington DJ & Shearer MJ (1997). Nutrient sources of phylloquinone (vitamin K₁) in Scottish men and women. Proceedings of the Nutrution Society, 56: 301A.

Shearer MJ, Harrington DJ, Bolton-Smith C, Clark KGA & Savidge GF . A very low, fixed dose of warfarin has a minimal effect on the gamma-carboxylation of the vitamin K-dependent coagulation factors but perturbs vitamin K metabolism. Thrombosis and Haemostasis supplement, 1997; 708.

Bolton-Smith C, Fenton S, Harrington D, Shearer MJ. Daily and seasonal variations in plasma phylloquinone: preliminary results. International Journal of Vitamin and Nutritional Research, 1996; 66:286.

Cox AD, McCarthy PT, Harrington DJ, Shearer MJ. Human vitamin K assessment: value of plasma des-g-carboxyprothrombin and vitamin K₁. International Journal of Vitamin and Nutritional Research, 1996; 66:285-286.

Harrington DJ, McCarthy PT, Cox AD, Shearer MJ. Diagnosis of poisoning with anti-vitamin K rodenticides by HPLC and diode-array detection. International Journal of Vitamin and Nutritional Research 1996; 66:276.

McCarthy PT, Cox AD, Harrington DJ, Shearer MJ. Simple HPLC method for mesuring vitamin K₁ after pharmacological dosing. International Journal of Vitamin and Nutritional Research 1996; 66:275-276.

Shearer MJ, Harrington DJ, Price RJG, Fenton S, Bolton-Smith C. The vitamin K content of common foods in the UK: towards a reliable database. International Journal of Vitamin and Nutritional Research, 1996; 66: 273-274.

Petursson S, Hodges SJ, Harrington D, Hopper C, Henderson B and Harris M. Phylloquinone content of young adults jaw bone. Journal of Dental Research, 1994; 53:358

Fenton S, Bolton-Smith C, Harrington D, Shearer MJ. Dietary vitamin K (phylloquinone) intake in Scottish men. Proceedings of the Nutrition Society, 1994; 53: 98A.

Petursson S., Harrington D., Shearer M., Hopper C., Hodges S. J Circulating levels of phylloquinone (Vitamin K1) in patients following orthognathic surgery. Journal of Dental Research, 1993; 72:689

Ville Y. Jenkins E. Shearer MJ. Hemley H. Vasey DP. Layton M. Nicolaides KH. Fetal intraventricular haemorrhage and maternal warfarin. Lancet, 1993; 341(8854):1211.

PH. Taylor PR. Shearer MJ. Owen WJ. Vitamin A deficiency secondary to pancreatic carcinoid. Case report. Acta Chirurgica Scandinavica, 1988; 154(7-8):487-8.

von Kries R. Gobel U. Shearer MJ. McCarthy PT. Vitamin K deficiency in breast-fed infants. Journal of Pediatrics, 1985; 107(4):650-1.

von Kries R. Reifenhauser A. Gobel U. McCarthy P. Shearer MJ. Barkhan P. Late onset haemorrhagic disease of newborn with temporary malabsorption of vitamin K1. Lancet, 1985; 1(8436):1035.

Hart JP. Catterall A. Dodds RA. Klenerman L. Shearer MJ. Bitensky L. Chayen J. Circulating vitamin K1 levels in fractured neck of femur. Lancet, 1984; 2(8397):283.

Shearer MJ. Barkhan P. Vitamin K1 and therapy of massive warfarin overdose. Lancet, 1979; 1(8110):266-7.

Barkhan P. Shearer MJ. Metabolism of vitamin K1 (phylloquinone) in man. Proceedings of the Royal Society of Medicine, 1977; 70(2):96-3.