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Osama Al-Dirbashi

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J Dayre McNally; Tim Ramsay; Osama Y Al-Dirbashi; Pranesh Chakraborty; Dermot R Doherty; Margaret L Lawson; Kusum Menon
The relationship between vitamin d status and adrenal insufficiency in critically ill children.
J Dayre McNally; Kusum Menon; Kathryn A Williams; Osama Y Al-Dirbashi; Pranesh Chakraborty; Dermot R Doherty; Lawrence Fisher
The association of vitamin D status with pediatric critical illness.
Steve C C Shih; Hao Yang; Osama Y Al-Dirbashi; Pranesh Chakraborty; Ryan Fobel; Mais Jebrail; Nathan McIntosh; Aaron R Wheeler
Dried blood spot analysis by digital microfluidics coupled to nanoelectrospray ionization mass spectrometry.

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All Publications

2013: J Dayre McNally; Tim Ramsay; Osama Y Al-Dirbashi; Pranesh Chakraborty; Dermot R Doherty; Margaret L Lawson; Kusum Menon
The relationship between vitamin d status and adrenal insufficiency in critically ill children.
The Journal of clinical endocrinology and metabolism 2013;98(5):E877-81.
2012: J Dayre McNally; Kusum Menon; Kathryn A Williams; Osama Y Al-Dirbashi; Pranesh Chakraborty; Dermot R Doherty; Lawrence Fisher
The association of vitamin D status with pediatric critical illness.
Pediatrics 2012;130(3):429-36.
2012: Steve C C Shih; Hao Yang; Osama Y Al-Dirbashi; Pranesh Chakraborty; Ryan Fobel; Mais Jebrail; Nathan McIntosh; Aaron R Wheeler
Dried blood spot analysis by digital microfluidics coupled to nanoelectrospray ionization mass spectrometry.
Analytical chemistry 2012;84(8):3731-8.
2011: Mais Jebrail; Nelson M Lafrenière; Christine McRoberts; Jared M Mudrik; Osama Y Al-Dirbashi; Pranesh Chakraborty; Lawrence Fisher; Hao Yang; Aaron R Wheeler
A digital microfluidic method for dried blood spot analysis.
Lab on a chip 2011;11(19):3218-24.
2011: Osama Y Al-Dirbashi; Stefan Kölker; Dione Ng; Lawrence Fisher; Tony Rupar; Nathalie Lepage; Mohamed S Rashed; Tomofumi Santa; Stephen I Goodman; Michael T Geraghty; Johannes Zschocke; Ernst Christensen; Georg F Hoffmann; Pranesh Chakraborty
Diagnosis of glutaric aciduria type 1 by measuring 3-hydroxyglutaric acid in dried urine spots by liquid chromatography tandem mass spectrometry.
Journal of inherited metabolic disease 2011;34(1):173-80.
2010: Osama Y Al-Dirbashi; Lawrence Fisher; Christine McRoberts; Komudi Siriwardena; Michael Geraghty; Pranesh Chakraborty
Identification of a neonate with hepatorenal tyrosinemia by combined routine newborn screening for succinylacetone, acylcarnitines and amino acids.
Clinical biochemistry 2010;43(7-8):691-3.
2009: Osama Y Al-Dirbashi; Ranad Shaheen; Moeenaldeen Al-Sayed; M Al-Dosari; N Makhseed; Leen Abu-Safieh; T Santa; Brian F Meyer; N Shimozawa; Fowzan S Alkuraya
Zellweger syndrome caused by PEX13 deficiency: report of two novel mutations.
American journal of medical genetics. Part A 2009;149A(6):1219-23.
2009: Osama Y Al-Dirbashi; Wesam Kurdi; Faiqa Imtiaz; Asmahan M Ahmad; Moeenaldeen Al-Sayed; Maha Tulbah; Maha Al-Nemer; Mohamed S Rashed
Reliable prenatal diagnosis of Canavan disease by measuring N-acetylaspartate in amniotic fluid using liquid chromatography tandem mass spectrometry.
Prenatal diagnosis 2009;29(5):477-80.
2009: Tomofumi Santa; Osama Y Al-Dirbashi; Takashi Yoshikado; Takeshi Fukushima; Kazuhiro Imai
Synthesis of benzofurazan derivatization reagents for short chain carboxylic acids in liquid chromatography/electrospray ionization-tandem mass spectrometry (LC/ESI-MS/MS).
Biomedical chromatography : BMC 2009;23(4):443-6.
2008: Osama Y Al-Dirbashi; Mohamed S Rashed; Minnie Jacob; Lujane Y Al-Ahaideb; Mohammed Al-Amoudi; Zuhair Rahbeeni; Moeen M Al-Sayed; Zuhair N Al-Hassnan; Mohamed Al-Owain; Hamad Al-Zeidan
Improved method to determine succinylacetone in dried blood spots for diagnosis of tyrosinemia type 1 using UPLC-MS/MS.
Biomedical chromatography : BMC 2008;22(11):1181-5.
2008: Osama Y Al-Dirbashi; Tomofumi Santa; Mohamed S Rashed; Zuhair Al-Hassnan; Nobuyuki Shimozawa; Aziza Chedrawi; Minnie Jacob; Manhal Al-Mokhadab
Rapid UPLC-MS/MS method for routine analysis of plasma pristanic, phytanic, and very long chain fatty acid markers of peroxisomal disorders.
Journal of lipid research 2008;49(8):1855-62.
2008: Tomofumi Santa; Osama Y Al-Dirbashi; Tomoko Ichibangase; Mohamed S Rashed; Takeshi Fukushima; Kazuhiro Imai
Synthesis of 4-[2-(N,N-dimethylamino)ethylaminosulfonyl]-7-N-methylhydrazino-2,1,3-benzoxadiazole (DAABD-MHz) as a derivatization reagent for aldehydes in liquid chromatography/electrospray ionization-tandem mass spectrometry.
Biomedical chromatography : BMC 2008;22(2):115-8.
2008: Zuhair N Al-Hassnan; Mohamed S Rashed; Osama Y Al-Dirbashi; Zoltan Patay; Zuhair Rahbeeni; Khaled K Abu-Amero
Hyperornithinemia-hyperammonemia-homocitrullinuria syndrome with stroke-like imaging presentation: clinical, biochemical and molecular analysis.
Journal of the neurological sciences 2008;264(1-2):187-94.
2007: Tomofumi Santa; Osama Y Al-Dirbashi; Tomoko Ichibangase; Takeshi Fukushima; Mohamed S Rashed; Takashi Funatsu; Kazuhiro Imai
Synthesis of benzofurazan derivatization reagents for carboxylic acids in liquid chromatography/electrospray ionization-tandem mass spectrometry.
Biomedical chromatography : BMC 2007;21(11):1207-13.
2007: T Santa; Osama Y Al-Dirbashi; T Fukushima
Derivatization reagents in liquid chromatography/electrospray ionization tandem mass spectrometry for biomedical analysis.
Drug discoveries & therapeutics 2007;1(2):108-18.
2007: Osama Y Al-Dirbashi; Mohamed S Rashed; Manhal A Al-Mokhadab; Khalid Al-Qahtani; Moeenaldeen Al-Sayed; Wesam Kurdi
Stable isotope dilution analysis of N-acetylaspartic acid in urine by liquid chromatography electrospray ionization tandem mass spectrometry.
Biomedical chromatography : BMC 2007;21(9):898-902.
2007: Osama Y Al-Dirbashi; Khaled K Abu-Amero; Abdulrahman Alswaid; G F Hoffmann; Khalid Al-Qahtani; Mohamed S Rashed
LC-MS/MS determination of dibasic amino acids for the diagnosis of cystinuria. Application in a family affected by a novel splice-acceptor site mutation in the SLC7A9 gene.
Journal of inherited metabolic disease 2007;30(4):611.
2007: Osama Y Al-Dirbashi; Mohamed S Rashed; Khalid Al-Qahtani; M A Al-Mokhadab; Wesam Kurdi; Moeenaldeen Al-Sayed
Quantification of N-acetylaspartic acid in urine by LC-MS/MS for the diagnosis of Canavan disease.
Journal of inherited metabolic disease 2007;30(4):612.
2007: Osama Y Al-Dirbashi; Tomofumi Santa; Khalid Al-Qahtani; Mohammed Al-Amoudi; Mohamed S Rashed
Analysis of organic acid markers relevant to inherited metabolic diseases by ultra-performance liquid chromatography/tandem mass spectrometry as benzofurazan derivatives.
Rapid communications in mass spectrometry : RCM 2007;21(13):1984-90.
2006: Osama Y Al-Dirbashi; Zuhair N Al-Hassnan; Mohamed S Rashed
Determination of homocitrulline in urine of patients with HHH syndrome by liquid chromatography tandem mass spectrometry.
Analytical and bioanalytical chemistry 2006;386(7-8):2013-7.
2006: Osama Y Al-Dirbashi; Nafiz Oncu Can; Minnie Jacob; Khalid Al-Qahtani; Mohamed S Rashed
UPLC-MS/MS determination of doxazosine in human plasma.
Analytical and bioanalytical chemistry 2006;385(8):1439-43.
2006: Osama Y Al-Dirbashi; Nafiz Oncu Can; Ali N Al Odaib; Minnie Jacob; Mohamed S Rashed
Rapid liquid chromatography-tandem mass spectrometry method for quantification of ziprasidone in human plasma.
Biomedical chromatography : BMC 2006;20(4):365-8.
2006: Osama Y Al-Dirbashi; Minnie Jacob; Lujane Y Al-Ahaidib; Khalid Al-Qahtani; Zuhair Rahbeeni; M Al-Owain; Mohamed S Rashed
Quantification of succinylacetone in urine of hepatorenal tyrosinemia patients by HPLC with fluorescence detection.
Clinica chimica acta; international journal of clinical chemistry 2006;365(1-2):243-8.
2006: Osama Y Al-Dirbashi; Mohamed S Rashed; Herman J Ten Brink; Cornelis Jakobs; Najlaa Filimban; Lujane Y Al-Ahaidib; Minnie Jacob; Moeen M Al-Sayed; Zuhair N Al-Hassnan; Eissa Faqeih
Determination of succinylacetone in dried blood spots and liquid urine as a dansylhydrazone by liquid chromatography tandem mass spectrometry.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2006;831(1-2):274-80.
2006: Osama Y Al-Dirbashi; Minnie Jacob; Zuhair N Al-Hassnan; Reem W Chabayta; Fahad El-Badaoui; Mohamed S Rashed
Determination of methylmalonic acid in urine by HPLC with intramolecular excimer-forming fluorescence derivatization.
Biomedical chromatography : BMC 2006;20(1):54-60.
2005: Osama Y Al-Dirbashi; Minnie Jacob; Mohammed Al-Amoudi; Khalid Al-Kahtani; Ali N Al Odaib; Fahad El-Badaoui; Mohamed S Rashed
Quantification of glutaric and 3-hydroxyglutaric acids in urine of glutaric acidemia type I patients by HPLC with intramolecular excimer-forming fluorescence derivatization.
Clinica chimica acta; international journal of clinical chemistry 2005;359(1-2):179-88.
2005: Mohamed S Rashed; Lujane Y Al-Ahaidib; Osama Y Al-Dirbashi; Mohammed Al-Amoudi; Moeen M A Al-Sayed; Zuhair Rahbeeni; Zuhair N Al-Hassnan; Abeer Al-Dbaas; Mohamed Al-Owain; Michelle Ni Luanaigh
Tandem mass spectrometric assay of succinylacetone in urine for the diagnosis of hepatorenal tyrosinemia.
Analytical biochemistry 2005;339(2):310-7.
2005: Osama Y Al-Dirbashi; Minnie Jacob; Zuhair N Al-Hassnan; Fahad El-Badaoui; Mohamed S Rashed
Diagnosis of methylmalonic acidemia from dried blood spots by HPLC and intramolecular-excimer fluorescence derivatization.
Clinical chemistry 2005;51(1):235-7.
2003: Kenichiro Nakashima; Kazumi Yamamoto; Osama Y Al-Dirbashi; Amal Kaddoumi; Mihoko N Nakashima
Semi-micro column HPLC of triazolam in rat plasma and brain microdialysate and its application to drug interaction study with itraconazole.
Journal of pharmaceutical and biomedical analysis 2003;30(6):1809-16.
2002: Kenichiro Nakashima; Kazumi Yamamoto; Osama Y Al-Dirbashi; Mihoko N Nakashima
Disposition of triazolam in the rat by brain microdialysis and semi-micro column high-performance liquid chromatography with UV absorbance detection.
Biomedical chromatography : BMC 2002;16(3):219-23.
2001: Osama Y Al-Dirbashi; K Ikeda; Masakatsu Takahashi; Naotaka Kuroda; S Ikeda; Kenichiro Nakashima
Drugs of abuse in a non-conventional sample; detection of methamphetamine and its main metabolite, amphetamine in abusers' clothes by HPLC with UV and fluorescence detection.
Biomedical chromatography : BMC 2001;15(7):457-63.
2000: Osama Y Al-Dirbashi; Kenichiro Nakashima
Hyphenated chromatographic methods for biomaterials.
Biomedical chromatography : BMC 2000;14(6):406-21.
2000: Osama Y Al-Dirbashi; Naotaka Kuroda; M Wada; Masakatsu Takahashi; Kenichiro Nakashima
Quantification of methamphetamine, amphetamine and enantiomers by semi-micro column HPLC with fluorescence detection; applications on abusers' single hair analyses.
Biomedical chromatography : BMC 2000;14(5):293-300.
2000: Osama Y Al-Dirbashi; M Wada; Naotaka Kuroda; Masakatsu Takahashi; Kenichiro Nakashima
Achiral and chiral quantification of methamphetamine and amphetamine in human urine by semi-micro column high-performance liquid chromatography and fluorescence detection.
Journal of forensic sciences 2000;45(3):708-14.