Bone mineral density in patients on home parenteral nutrition: a follow-up study.

Home artificial nutrition

Pancreatic Ductal Adenocarcinoma Associated with Autoimmune Pancreatitis

Autoimmune pancreatitis (AIP), in contrast to other benign chronic pancreatic diseases, can be cured with immunosuppressant drugs, thus the differentiation of AIP from pancreatic cancer is of particular interest in clinical practice. There is the possibility that some patients with AIP may develop pancreatic cancer, and this possibility contributes to increasing our difficulties in differentiating AIP from pancreatic cancer. We herein report the case of a 70-year-old man in whom pancreatic adenocarcinoma and AIP were detected simultaneously. We must carefully monitor AIP patients for the simultaneous presence of pancreatic cancer, even when a diagnosis of AIP is confirmed

Anaerobiosis revisited: growth of Saccharomyces cerevisiae under extremely low oxygen availability

The budding yeast Saccharomyces cerevisiae plays an important role in biotechnological applications, ranging from fuel ethanol to recombinant protein production. It is also a model organism for studies on cell physiology and genetic regulation. Its ability to grow under anaerobic conditions is of interest in many industrial applications. Unlike industrial bioreactors with their low surface area relative to volume, ensuring a complete anaerobic atmosphere during microbial cultivations in the laboratory is rather difficult. Tiny amounts of O2 that enter the system can vastly influence product yields and microbial physiology. A common procedure in the laboratory is to sparge the culture vessel with ultrapure N2 gas; together with the use of butyl rubber stoppers and norprene tubing, O2 diffusion into the system can be strongly minimized. With insights from some studies conducted in our laboratory, we explore the question ‘how anaerobic is anaerobiosis?’. We briefly discuss the role of O2 in non-respiratory pathways in S. cerevisiae and provide a systematic survey of the attempts made thus far to cultivate yeast under anaerobic conditions. We conclude that very few data exist on the physiology of S. cerevisiae under anaerobiosis in the absence of the anaerobic growth factors ergosterol and unsaturated fatty acids. Anaerobicity should be treated as a relative condition since complete anaerobiosis is hardly achievable in the laboratory. Ideally, researchers should provide all the details of their anaerobic set-up, to ensure reproducibility of results among different laboratories. A correction to this article is available online at http://eprints.whiterose.ac.uk/131930/ https://doi.org/10.1007/s00253-018-9036-

Common and rare variant association analyses in amyotrophic lateral sclerosis identify 15 risk loci with distinct genetic architectures and neuron-specific biology

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease with a lifetime risk of one in 350 people and an unmet need for disease-modifying therapies. We conducted a cross-ancestry genome-wide association study (GWAS) including 29,612 patients with ALS and 122,656 controls, which identified 15 risk loci. When combined with 8,953 individuals with whole-genome sequencing (6,538 patients, 2,415 controls) and a large cortex-derived expression quantitative trait locus (eQTL) dataset (MetaBrain), analyses revealed locus-specific genetic architectures in which we prioritized genes either through rare variants, short tandem repeats or regulatory effects. ALS-associated risk loci were shared with multiple traits within the neurodegenerative spectrum but with distinct enrichment patterns across brain regions and cell types. Of the environmental and lifestyle risk factors obtained from the literature, Mendelian randomization analyses indicated a causal role for high cholesterol levels. The combination of all ALS-associated signals reveals a role for perturbations in vesicle-mediated transport and autophagy and provides evidence for cell-autonomous disease initiation in glutamatergic neurons

Is type 2 diabetes a risk factor for pancreatic cancer?

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Long-standing pancreatic hyperenzymemia: is it a nonpathological condition?

Chronic nonpathological pancreatic hyperenzymemia is characterized by a chronic, abnormal increase in the serum concentrations of the pancreatic enzymes including amylase, pancreatic isoamylase, lipase and trypsin. The diagnostic work-up that the physicians should recommend to subjects with hyperenzymemia to definitively assess this syndrome is still an open question. A 72-year-old female was admitted to our Pancreas Unit in December 2008 for the presence of long-standing pancreatic hyperenzymemia of 42 years duration. On admission, serum amylase activity was 160 IU/l (reference range 8-78 IU/l), serum pancreatic isoamylase activity was 91 IU/l (reference range 13-53 IU/l) and serum lipase activity was 127 IU/l (reference range 8-78 IU/l). Other laboratory examinations revealed normal blood tests except for total serum cholesterol, HDL cholesterol and serum triglycerides that was slight elevated. Abdominal ultrasonography demonstrated no alteration of the pancreatic gland. A magnetic resonance cholangiopancreatography was carried out according to our diagnostic work-up of patients with unexplained pancreatic hyperenzymemia. This examination revealed two small cystic lesions: one of 6 mm in diameter in the head of the pancreas and the other one of 9 mm in diameter in the body of the pancreatic gland. The duct of Wirsung was normal and the two cystic lesions were diagnosed as branch-type intrapapillary mucinous tumors of the pancreas. All patients with pancreatic hyperenzymemia should be strictly followed in high volume centers for pancreatic disease in order to early diagnose the possible appearance of morphological pancreatic alteration