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Background & aims Nonalcoholic fatty liver disease (NAFLD) is known to increase the risk of adenomatous colonic polyps. However, the role of screening colonoscopy in patients with biopsy-proven NAFLD in detecting advanced colorectal neoplasm is not clearly evidence-based. Therefore, we investigated whether the histological severity of NAFLD is associated with advanced colorectal neoplasm. Methods This study included patients ≥18 years old who underwent screening colonoscopy between 2013 and 2018 within a biopsy-evaluated prospective NAFLD cohort. Advanced colorectal neoplasm was defined as an adenomatous polyp greater than 10 mm in diameter and/or with villous histology and/or with high-grade dysplasia or adenocarcinoma. Results Among the 476 patients with clinically suspected NAFLD, 379 patients were diagnosed with biopsy-proven NAFLD and 97 patients had no evidence of NAFLD histologically, who were analyzed as healthy controls. The prevalence of advanced colorectal neoplasm was 11.1% (n = 53). Patients with advanced colorectal neoplasm had higher grade of steatosis (P = 0.004) and higher stage of hepatic fibrosis (P = 0.044) than those with normal colonoscopic findings or low-grade adenomatous polyp. Multivariable logistic regression analysis revealed that the presence of nonalcoholic steatohepatitis (NASH) was an independent risk factor for both colorectal polyp (odds ratio [OR], 2.08; 95% confidential interval [CI], 1.12-3.86; P = 0.020) and advanced colorectal neoplasm (OR, 2.81; 95% CI, 1.01-7.87; P = 0.049). Conclusions The presence of biopsy-proven NASH was significantly associated with an increased risk of advanced colorectal neoplasm among patients with NAFLD. This finding may alert physicians to conduct screening colonoscopy in patients with NASH to detect advanced colorectal neoplasm early.

Concurrent presentation of acute hepatitis A virus (HAV) infection and Graves' disease has not been reported in literature worldwide. Although there is no well-established mechanism that explains the induction of Graves' disease by HAV to date, our case suggests that HAV infection may be responsible for inducing Graves' disease. A healthy 27-year-old female presented fever, palpitation, and diarrhea, and she was subsequently diagnosed as acute HAV infection. Concurrently, she showed hyperthyroidism, and the diagnosis was made as Graves' disease. She had never had symptoms that suggested hyperthyroidism, and previous thyroid function test was normal. Acute HAV infection was recovered by conservative management, however, thyroid dysfunction was maintained even after normalization of liver enzymes. Methimazole was used to treat Graves' disease. We report a case of concurrent acute HAV infection and Graves' disease in a patient without preexisting thyroid disease. This suggests that HAV infection may be a trigger for an autoimmune thyroid disease in susceptible individuals.

Annales d'Endocrinologie - In Press.Proof corrected by the author Available online since mardi 14 fevrier 2017

Calcitonin (CT), the major biochemical marker in medullary thyroid carcinoma (MTC) is prone to in vitro instability and suffers from scarcity of clinical laboratory platforms. Procalcitonin (PCT), the precursor of CT, free of these shortcomings, has been reported as a potential MTC marker. The aim of this study was to assess the negative predictive value (NPV) of PCT as a first-line marker in MTC. 476 serum samples referred to our laboratory for CT measurements were analyzed for PCT. NPVs of PCT were assessed at 3 cut-offs (0.05, 0.10 and 0.15 ng/mL) and the diagnosis of MTC was based on CT levels. PCT and CT levels were correlated (r=0.7554 for CT levels above 10 pg/mL, n=66). Accepting the CT cut-off based on the upper reference limit the NPV of PCT were 98.1% (0.05 ng/mL), 96.3% (0.10 ng/mL) and 95.4% (0.15 ng/mL) respectively. For a CT cut-off of 100 pg/mL the NPVs of PCT were 100% for all PCT thresholds. Serum PCT has a strong NPV and could be a good candidate for a first-line screening test to exclude MTC in patients with suspicious thyroid nodules or suggestive symptoms. Larger prospective studies are necessary to confirm our results.

AIM To investigate the role of sleep quality and psychosocial problems as predictors of functional gastrointestinal disorders (FGIDs) in doctors that work 24 hour-on-call shifts. METHODS In this cross-sectional observation study, using the Rome III Questionnaire and Pittsburgh Sleep Quality Index (PSQI), we analyzed 170 doctors with 24 hour-on-call shifts. RESULTS Among the participants that had experienced a 24 hour-on-call shift within the last 6 mo, 48 (28.2%) had FGIDs. Overall prevalence of irritable bowel syndrome (IBS) and functional dyspepsia (FD) were 16.5% and 17.1%, respectively, with 5.3% exhibiting both. Sleep scores (PSQI) (8.79 ± 2.71 vs 7.30 ± 3.43, P = 0.008), the presence of serious psychosocial alarm (83.3% vs 56.6%, P = 0.004), and the proportion of doctors who experienced over two months of recent on-call work (81.2% vs 68.9%, P = 0.044) were significantly different between individuals with or without FGIDs. Multivariate analysis revealed that presenting serious psychosocial alarm was an independent risk factor for prevalence of FD (OR = 5.47, 95%CI: 1.06-28.15, P = 0.042) and poor sleep quality (PSQI ≥ 6) was a predictor of IBS (OR = 4.17, 95%CI: 1.92-19.02, P = 0.016). CONCLUSION Physicians should recognize the role of sleep impairment and psychological stress in the development of FGIDs and a comprehensive approach should be considered to manage patients with FGIDs.

The effects of glucagon on amino acid transport in rat hepatocytes are not fully understood. We examined the effect of this hormone on alanine, serine and cysteine preferring system (system ASC)-mediated amino acid transport in rat hepatocyte monolayers using 2-aminoisobutyric acid (AIB) and l -cysteine. Glucagon induced a time and protein synthesis-dependent stimulation of Na(+)-dependent alanine preferring system (system A)-independent AIB transport. The glucagon-induced increase in transport activity was not modified by substrate starvation and not related to changes in the intracellular pool of amino acids. Glucagon did not modify system ASC activity measured by l -cysteine. Therefore the transport activity of AIB independent of system A stimulated by glucagon cannot be attributed to system ASC. This suggests a Na(+)-dependent transport system in rat hepatocytes not identified until now.

To investigate appropriate mode and daily dose of enteral ornithine alpha-ketoglutarate (OKG) administration, 54 burn patients (total burn surface area: 20-50%) were included in a randomized controlled trial and assigned to receive either a supplement of OKG (10, 20 or 30 g/d) as bolus or continuous infusion, or a continuous infusion of an isonitrogenous amount of a soy protein mixture (Protil-1: 10, 20 or 30 g/d) in addition to their enteral diet. The influence of these treatments on clinical outcome and biological indices was evaluated. OKG administration significantly improved nitrogen balance and reduced 3-methylhistidine and hydroxyproline urinary elimination. This was associated with a gradual rise in plasma glutamine over time. Given as a bolus, OKG significantly improved wound healing, assessed both clinically [day of last graft: (mean +/- SEM) OKG bolus 23.7 +/- 2.1 d versus Protil-1, 39.9 +/- 9.9 d; P < 0.05] and by hydroxyproline excretion, and biological markers of nitrogen metabolism, and tended to reduce duration of enteral nutrition (P = 0.12). The higher catabolic status in the patients administered 20 g OKG/d at the onset of the study, despite randomization, precludes any definite conclusion (concerning the dose-effect relationship). However, based on 3-methylhistidine elimination, our data indicate a benefit of 30 g OKG/d administration over 10 g/d. This study further supports OKG supplementation in burn patients. In addition, this is the first trial based on objective data that favors bolus over continuous infusion of OKG in critically ill patients.

Ornithine alpha-ketoglutarate (OKG) has been successfully used as an enteral supplement in the treatment of catabolic states, including burn injury. However, specific questions remain unanswered concerning burn patients, including OKG metabolism and metabolite production, appropriate mode of administration, and dose. We thus performed a kinetic study and followed plasma ornithine and OKG metabolite concentrations on day 7 postburn in 42 (35 men, 7 women) consecutive burn patients aged 33 +/- 2 y with a mean (+/-SEM) total burn surface area (TBSA) of 31 +/- 1%. Patients were randomly assigned to receive OKG as a single bolus (10 g; n = 13) or in the form of a continuous gastric infusion (10, 20, or 30 g/d over 21 h; n = 13) or an isonitrogenous control (n = 16). Plasma pharmacokinetics of ornithine followed a one-compartment model with first-order input (r = 0.993, P < 0.005). OKG was extensively metabolized in these patients (absorption constant = 0.028 min-1, elimination half-life = 89 min), with the production of glutamine, arginine, and proline; proline was quantitatively the main metabolite [in OKG bolus, area under the curve (AUC)0-7h: proline, 41.4 +/- 5.6 mmol.min/L; glutamine, 20.4 +/- 5.7 mmol.min/L; and arginine, 7.3 +/- 1.9 mmol.min/L]. Proline production was dose-dependent and quantitatively similar between modes of OKG administration. Glutamine and arginine production were not dose-dependent and were higher in the bolus group than in the infusion group. Overall, the bolus mode of OKG administration appeared to be associated with higher metabolite production compared with continuous infusion in burn patients, especially for glutamine and arginine.

In early vertebrate development, mesoderm induction is a crucial event regulated by several factors including the activin, BMP and FGF signaling pathways. While the requirement of FGF in Nodal/activin-induced mesoderm formation has been reported, the fate of the tissue modulated by these signals is not fully understood. Here, we examined the fate of tissues when exogenous activin was added and FGF signaling was inhibited in animal cap explants of Xenopus embryos. Activin-induced dorsal mesoderm was converted to ventral mesoderm by inhibition of FGF signaling. We also found that inhibiting FGF signaling in the dorsal marginal zone, in vegetal-animal cap conjugates or in the presence of the activin signaling component Smad2, converted dorsal mesoderm to ventral mesoderm. The expression and promoter activities of a BMP responsive molecule, PV.1 and a Spemann organizer, noggin, were investigated while FGF signaling was inhibited. PV.1 expression increased, while noggin decreased. In addition, inhibiting BMP-4 signaling abolished ventral mesoderm formation induced by exogenous activin and FGF inhibition. Taken together, these results suggest that the formation of dorso-ventral mesoderm in early Xenopus embryos is regulated by a combination of FGF, activin and BMP signaling.

Objectives: Gestational diabetes mellitus (GDM) affects 2%–4% of the all pregnant women, and it is a major risk factor for development of type 2 DM. We performed this cross-sectional study to determine whether there were defects in insulin secretory capacity or insulin sensitivity in women with previous GDM. Methods: On 6–8 weeks after delivery, 75 g oral glucose tolerance test was performed in 36 women with previous GDM and 19 non-pregnant control women matched with age and weight. Intravenous glucose tolerance test was performed on 10–14 weeks after delivery. Insulin secretory capacity measured as the acute insulin response to glucose (AIRg) and insulin sensitivity as minimal model derived sensitivity index (SI) were obtained. AIRg×SI (β-cell disposition index) was used as an index of β-cell function. Results: Women with previous GDM were classified into normal glucose tolerance (postpartum-NGT, n=19) and impaired glucose tolerance (postpartum-IGT, n=17). Postpartum fasting glucose levels were significantly higher in postpartum-IGT compared to postpartum-NGT and control (P

Actinomycosis causes a chronic suppurative, granulomatous disease which is characterized by extensive abscess formation, and sulfur granule formation. Actinomycosis may present different clinical forms: cervicofacial, thoracic, abdominal and cerebral actinomycosis. The diagnosis can only be made after surgery. In general, patients with abdominal actinomycosis have undergone abdominal surgery. We report four cases of primary appendiceal actinomycosis presenting as acute appendicitis without history of

Neisseria cinerea is bacteria known as non-pathogenic strain. However, in rare cases, it can cause opportunistic infections. Those diseases caused by N. cinerea include neonatal ophthalmia, proctitis, pneumonia, peritonitis in patients with continuous ambulatory peritoneal dialysis, endocarditis and meningitis. In this report, we describe a patient with septic arthritis and skin abscess of finger joints that was caused by N. cinerea . A 27-year-old man visited the hospital due to swelling, redness and pain of proximal interphalangeal joint of the left second finger. After blood culture test, ceftriaxone was administered on admission and debridement was performed the affected joints. N. cinerea was identified in the blood culture. The patient was improved with ceftriaxone.

Eosinophilic gastroenteritis is a rare, benign condition, characterized by various gastrointestinal symptoms associated with eosinophilic infiltration of the wall of the any part of the digestive tract, most commonly the stomach and small intestine. Eosinophilic gastroenteritis is generally classified according to the involved layer of the gastrointestinal tract. Serosal type is the rarest form of eosinophilic gastroenteritis that is characteristically accompanied with eosinophilic ascites and responds well to steroid treatment. We have experienced a typical case of serosal type eosinophilic gastroenteritis in a women who complained of abdominal pain. She had peripheral eosinophilia, gastric and small bowel wall thickening with eosionophilic ascites. Her symptom relieved rapidly after starting corticosteroid treatment and she had long been in clinical remission after discontinuation of corticosteroid administration. (Ewha Med J 2014;37(2):126130)

Although digital gangrene is an uncommon clinical feature, it may lead to serious complications, such as amputation. Therefore, it requires prompt evaluation and treatment. Digital gangrene is often seen in systemic sclerosis, but is rare in systemic lupus erythematosus (SLE). In SLE, digital gangrene results from vasculitis, vasospasm, and thromboembolism. Here, we report a 15-year-old male SLE patient who initially presented with digital gangrene, and present a review of the relevant literature. (Korean J Med 2013;84:141-144)

Tumor necrosis factor (TNF)-alpha antagonist has been proven to have benefit for rheumatologic diseases. Because TNF-alpha is not only an important mediator of inflammation in human body, but plays many physiologic roles, it can cause unique adverse effects or complications related to these functions. Adverse effects involving neurological systems, such as Guillain-Barre syndrome, Chronic inflammatory demyelinating polyneuropathy, multifocal motor neuropathy with conduction blocks (MMNCB), distal symmetric polyneuropathy, and small fibers neuropathy have been previously reported. However, only several cases of infliximab-associated MMNCB are reported. We report a case of MMNCB which developed while treating spondyloarthropathy with infliximab.

Background/Aims Proteolysis may persist in the liver aliograft during cold storage. The aim of this study was to determine the significance of proteolysis within liver allografts stored at 4°C in University of Wisconsin preservation fluid. Methods Thirty recipients of 32 liver allografts were studied prospectively. Amino acid content of the preservation fluid was analyzed at the end of cold storage and was correlated to graft and patient outcome after transplantation. Results Analysis of the preservation fluid showed the presence of free amino acids, the profile of which was different from that of stored liver parenchyma. Concentrations of amino acids (alanine, cysteine, leucine, isoleucine, methionine, lysine, ornithine, and threonine) and transaminases (alanine aminotransferase and aspartate aminotransferase) in the preservation fluid correlated with the duration of cold ischemia. Indexes of graft dysfunction (serum alanine aminotransferase and aspartate aminotransferase peaks and prothrombin rate) correlated with concentrations of cysteine, alanine, isoleucine, leucine, methionine, lysine, ornithine, and threonine, whereas enzyme concentrations in the fluid were not predictive of graft dysfunction. Conclusions These data suggest that liver proteolysis occurs during cold storage and may have a detrimental effect on the outcome after transplantation. The measurement of the amino acids in the preservation fluid at the end of the cold storage period could help to identify the most severely damaged organs.

Ornithine (Orn; α-ketoglutarate (αKG) salt) and arginine (Arg) supplementation of enteral diets has been advocated in the treatment of hypercatabolism of trauma patients, but both compounds are subject to extensive hepatic metabolism. To compare the metabolism of these two compounds and to evaluate the possible influence of the αKG moiety, livers were perfused with αKG, Orn, ornithine α-ketoglutarate (OKG) or Arg (n6 in each group) for 1 h. Arg uptake was nearly fourfold higher than Orn uptake (690 (SD 162) ν. 178 (SD 30) nmol/min per g liver), and Orn uptake was not modified by αKG. Orn was totally metabolized by the liver, whereas Arg led to Orn release (408 (SD 159) nmol/min per g liver) and a threefold stimulation of urea production (Arg 1·44 (SD 0·22) ν. Orn 0·45 (SD 0.09) μol/min per g liver). αKG alone only increased hepatic aspartate uptake but, when associated with Orn as OKG, it led to an increase in giutamate release and in proiine content in the liver and to a decrease in proiine uptake. From these findings we conclude that (1) Arg load is extensively metabolized by the liver, inducing urea production, (2) in enteral use, Orn supplementation appears preferable to Arg as it is less ureogenic (as also recently demonstratedin vivoin stressed rats receiving isomolar amounts of Arg and Orn), (3) the liver participates in the Orn-αKG metabolic interaction, mostly in proiine metabolism, which occurs in the splanchnic area.