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Masashi Oka Selected Research

Pepsinogen A (Pepsinogen)

3/2014Cancer development based on chronic active gastritis and resulting gastric atrophy as assessed by serum levels of pepsinogen and Helicobacter pylori antibody titer.
1/2013No association of coffee consumption with gastric ulcer, duodenal ulcer, reflux esophagitis, and non-erosive reflux disease: a cross-sectional study of 8,013 healthy subjects in Japan.
4/2011Assessment of gastroesophageal reflux disease by serodiagnosis of Helicobacter pylori-related chronic gastritis stage.
12/2010Novel risk markers for gastric cancer screening: Present status and future prospects.
3/2010Preventive effects of etodolac, a selective cyclooxygenase-2 inhibitor, on cancer development in extensive metaplastic gastritis, a Helicobacter pylori-negative precancerous lesion.
12/2009Eradication of Helicobacter pylori prevents cancer development in subjects with mild gastric atrophy identified by serum pepsinogen levels.
8/2008Risk of gastric cancer in asymptomatic, middle-aged Japanese subjects based on serum pepsinogen and Helicobacter pylori antibody levels.
4/2008Cancer high-risk subjects identified by serum pepsinogen tests: outcomes after 10-year follow-up in asymptomatic middle-aged males.
1/2007Serum pepsinogen and gastric cancer screening.
10/2005Gastric cancer screening of a high-risk population in Japan using serum pepsinogen and barium digital radiography.

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Masashi Oka Research Topics

Disease

15Neoplasms (Cancer)
03/2014 - 08/2005
8Stomach Neoplasms (Stomach Cancer)
07/2012 - 08/2005
4Atrophy
03/2014 - 10/2004
3Gastritis
03/2014 - 03/2010
3Atrophic Gastritis
12/2010 - 01/2007
2Varicose Veins (Varicose Vein)
10/2014 - 02/2014
2Stomach Ulcer (Gastric Ulcer)
01/2013 - 07/2012
2Ulcer
01/2013 - 07/2009
2Hepatocellular Carcinoma (Hepatoma)
06/2011 - 01/2011
2Metaplasia
06/2009 - 08/2005
2Inflammation
04/2008 - 08/2005
1Pathologic Dilatation (Ectasia)
05/2013
1Stomach Diseases
01/2013
1Peptic Esophagitis (Reflux Esophagitis)
01/2013
1Gastrointestinal Diseases (Functional Gastrointestinal Disorders)
01/2013
1Peptic Ulcer (Peptic Ulcers)
01/2013
1Infection
01/2013
1Duodenal Ulcer (Curling's Ulcer)
01/2013
1Gastroesophageal Reflux (GERD)
04/2011
1Fibrosis (Cirrhosis)
01/2011
1Hypercalcemia (Milk Alkali Syndrome)
01/2011
1Neuroendocrine Tumors (Neuroendocrine Tumor)
01/2011
1Acalculous Cholecystitis
01/2011
1Neoplasm Metastasis (Metastasis)
01/2011
1Glucagonoma
01/2011
1Cholecystitis
01/2011
1Ischemia
01/2011
1Achlorhydria (Hypochlorhydria)
04/2009
1Chronic Hepatitis C
09/2007
1Congenital Abnormalities (Deformity)
10/2006
1Esophageal Stenosis (Esophageal Stricture)
06/2006
1Rectal Neoplasms (Rectal Cancer)
02/2006
1Hemorrhage
02/2006
1Cysts
01/2006
1Obstructive Jaundice (Cholestatic Jaundice)
01/2006
1Hypertrophy
10/2004

Drug/Important Bio-Agent (IBA)

10Pepsinogen A (Pepsinogen)IBA
03/2014 - 10/2005
2ethanolamine oleate (Ethamolin)FDA Link
10/2014 - 02/2014
2Biological Tumor Markers (Tumor Markers)IBA
08/2011 - 09/2009
2Biological Markers (Surrogate Marker)IBA
08/2011 - 06/2011
2Etodolac (Lodine)FDA LinkGeneric
03/2010 - 08/2005
1Iopamidol (Isovue)FDA LinkGeneric
02/2014
1Caffeine (No Doz)FDA LinkGeneric
01/2013
1CoffeeFDA Link
01/2013
1Chemotactic FactorsIBA
07/2012
1Methylnitronitrosoguanidine (MNNG)IBA
07/2012
1rebamipideIBA
07/2012
1acarboxyprothrombin (PIVKA)IBA
08/2011
1Gadolinium DTPA (Magnevist)FDA Link
06/2011
1Parathyroid Hormone-Related ProteinIBA
01/2011
1sorafenib (BAY 43-9006)FDA Link
01/2011
1HormonesIBA
01/2011
1Prostaglandin-Endoperoxide Synthases (Cyclooxygenase)IBA
03/2010
1Cyclooxygenase 2 (Cyclooxygenase-2)IBA
03/2010
1alpha-Fetoproteins (AFP)IBA
09/2009
1polaprezinc (Z 103)IBA
07/2009
1villinIBA
06/2009
1Proton Pumps (Proton Pump)IBA
04/2009
1AntibodiesIBA
08/2008
1Pepsinogen CIBA
04/2008
1Ribavirin (Virazole)FDA LinkGeneric
09/2007
1InterferonsIBA
09/2007
1RNA (Ribonucleic Acid)IBA
09/2007
1SHU 508 (Levovist)IBA
03/2006
1Glycerol (Glycerine)FDA LinkGeneric
02/2006
1Hyaluronic Acid (Hyaluronan)IBA
02/2006
1EnzymesIBA
01/2006
1monoethanolamine oleateIBA
01/2006
1BariumIBA
10/2005
1Carbachol (Carbastat)FDA Link
10/2004
1Cholecystokinin B ReceptorIBA
10/2004
1Histamine (Histamine Dihydrochloride)FDA Link
10/2004
1GastrinsIBA
10/2004

Therapy/Procedure

2Sclerotherapy
10/2014 - 01/2006
2Argon Plasma Coagulation
05/2013 - 10/2006
2Chemoprevention
03/2010 - 08/2005
1Catheters
02/2014
1Pancreatectomy
01/2011
1Electrocoagulation (Electrocautery)
10/2006
1Balloon Dilation
06/2006
1Endoscopic Hemostasis
02/2006