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Browsing by Subject "Amylases"
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Item Cloning human pancreatic a-amylase cDNA: nucleotide sequence and evolutionary comparisons(1985) Wise, Robert JosephItem Determination of the nucleotide sequence of a human amylase gene and analysis of intron/exon structure(1985) Handy, Diane ElizabethItem Human salivary and Pancreatic a-Amylase Isozymes: genetic and biochemical studies(1977) Ward, Jewell CatherineItem Low Serum Pancreatic Amylase and Lipase Values Are Simple and Useful Predictors to Diagnose Chronic Pancreatitis(Editorial Office of Gut and Live, 2017-11) Oh, Hyoung-Chul; Kwon, Chang-Il; El Hajj, Ihab I.; Easler, Jeffrey J.; Watkins, James; Fogel, Evan L.; McHenry, Lee; Sherman, Stuart; Zimmerman, Michelle K.; Lehman, Glen A.; Medicine, School of MedicineBackground/Aims This study aimed to evaluate the diagnostic role of low serum amylase and lipase values in the detection of chronic pancreatitis. Methods Patients underwent endoscopic retrograde cholangiopancreatography and were diagnosed with non-calcific chronic pancreatitis (NCCP; n=99) and calcific chronic pancreatitis (CCP; n=112). Patient serum amylase and lipase values were compared with those of healthy controls (H; n=170). Results The median serum amylase (normal range, 19 to 86 U/L) and lipase values (7 to 59 U/L) (P25–P75) were 47.0 (39.8 to 55.3) and 25.0 (18.0 to 35.0) for H, 34.0 (24.5 to 49.0) and 19.0 (9.0 to 30.0) for NCCP, and 30.0 (20.0 to 40.8) and 10.0 (3.0 to 19.0) for CCP, respectively. The cutoff values with the highest diagnostic accuracy for discriminating NCCP from H were 40 U/L for amylase and 20 U/L for lipase, respectively, and for CCP from H were 38 U/L for amylase and 15 U/L for lipase, respectively. For the diagnosis of NCCP with a criterion of serum amylase <40 and lipase <20 U/L, the sensitivity, specificity, positive predictive value, and negative predictive values were 37.4%, 88.8%, 66.1%, and 70.9%, respectively. Conclusions Serum amylase and/or lipase levels below the normal serum range are highly specific for chronic pancreatitis patients. Clinicians should not ignore low serum pancreatic enzyme values.Item Sequential drain amylase to guide drain removal following pancreatectomy(Elsevier, 2018-06) Villafane-Ferriol, N.; Van Buren, G.; Mendez-Reyes, J.E.; McElhany, A.L.; Massarweh, N.N.; Silberfein, E.; Hsu, C.; Tran Cao, H.S.; Schmidt, C.; Zyromski, N.; Dillhoff, M.; Roch, A.; Oliva, E.; Smith, A.C.; Zhang, Q.; Fisher, W.E.; Surgery, School of MedicineBACKGROUND: Although used as criterion for early drain removal, postoperative day (POD) 1 drain fluid amylase (DFA) ≤ 5000 U/L has low negative predictive value for clinically relevant postoperative pancreatic fistula (CR-POPF). It was hypothesized that POD3 DFA ≤ 350 could provide further information to guide early drain removal. METHODS: Data from a pancreas surgery consortium database for pancreatoduodenectomy and distal pancreatectomy patients were analyzed retrospectively. Those patients without drains or POD 1 and 3 DFA data were excluded. Patients with POD1 DFA ≤ 5000 were divided into groups based on POD3 DFA: Group A (≤350) and Group B (>350). Operative characteristics and 60-day outcomes were compared using chi-square test. RESULTS: Among 687 patients in the database, all data were available for 380. Fifty-five (14.5%) had a POD1 DFA > 5000. Among 325 with POD1 DFA ≤ 5000, 254 (78.2%) were in Group A and 71 (21.8%) in Group B. Complications (35 (49.3%) vs 87 (34.4%); p = 0.021) and CR-POPF (13 (18.3%) vs 10 (3.9%); p < 0.001) were more frequent in Group B. CONCLUSIONS: In patients with POD1 DFA ≤ 5000, POD3 DFA ≤ 350 may be a practical test to guide safe early drain removal. Further prospective testing may be useful.