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Right heart catheterization after diuresis revealed a pulmonary artery mean pressure of 32 mmHg, improved to 23 mmHg after nitric oxide, pulmonary capillary wedge pressure of 7 mm Hg, and pulmonary vascular resistance of 6 Wood units. Bone marrow biopsy revealed acute myeloid leukemia (AML).

Corresponding author's email: andrew.foderaro@gmail.com Introduction: Klebsiella rhinoscleromatis is a rare subspecies of Klebsiella pneumoniae that is known to cause chronic granulomatous disease particularly of the respiratory tract. Shortly after admission to the medical intensive care unit (ICU), the patient's secretions occluded the narrowed airway causing abrupt desaturation, requiring emergent endotracheal intubation with a 5.0mm endotracheal tube.

The fungal plasma membrane is critical for cell wall synthesis and other important processes including nutrient uptake, secretion, endocytosis, morphogenesis, and response to stress. To coordinate these diverse functions, the plasma membrane is organized into specialized compartments that vary in size, stability, and composition. One recently identified domain known as the Membrane Compartment of Can1 (MCC)/eisosome is distinctive in that it corresponds to a furrow-like invagination in the plasma membrane. MCC/eisosomes have been shown to be formed by the Bin/Amphiphysin/Rvs (BAR) domain proteins Lsp1 and Pil1 in a range of fungi. MCC/eisosome domains influence multiple cellular functions; but a very pronounced defect in cell wall synthesis has been observed for mutants with defects in MCC/eisosomes in some yeast species. For example, Candida albicans MCC/eisosome mutants display abnormal spatial regulation of cell wall synthesis, including large invaginations and altered chemical composition of the walls. Recent studies indicate that MCC/eisosomes affect cell wall synthesis in part by regulating the levels of the key regulatory lipid phosphatidylinositol 4,5-bisphosphate (PI4,5P2) in the plasma membrane. One general way MCC/eisosomes function is by acting as protected islands in the plasma membrane, since these domains are very stable. They also act as scaffolds to recruit >20 proteins. Genetic studies aimed at defining the function of the MCC/eisosome proteins have identified important roles in resistance to stress, such as resistance to oxidative stress mediated by the flavodoxin-like proteins Pst1, Pst2, Pst3 and Ycp4. Thus, MCC/eisosomes play multiple roles in plasma membrane organization that protect fungal cells from the environment.

Differentiation of the protozoan parasite Toxoplasma gondii into its latent bradyzoite stage is a key event in the parasite's life cycle. Compound 2 is an imidazopyridine that was previously shown to inhibit the parasite lytic cycle, in part through inhibition of parasite cGMP-dependent protein kinase. We show here that Compound 2 can also enhance parasite differentiation, and we use yeast three-hybrid analysis to identify TgBRADIN/GRA24 as a parasite protein that interacts directly or indirectly with the compound. Disruption of the TgBRADIN/GRA24 gene leads to enhanced differentiation of the parasite, and the TgBRADIN/GRA24 knockout parasites show decreased susceptibility to the differentiation-enhancing effects of Compound 2. This study represents the first use of yeast three-hybrid analysis to study small-molecule mechanism of action in any pathogenic microorganism, and it identifies a previously unrecognized inhibitor of differentiation in T. gondii. A better understanding of the proteins and mechanisms regulating T. gondii differentiation will enable new approaches to preventing the establishment of chronic infection in this important human pathogen.

5-fluorouracil (5-FU) is a key chemotherapeutic agent in the treatment of many gastrointestinal tract adenocarcinomas. Despite its proven therapeutic efficacy, 5-FU also possesses several undesired cardiac toxicities, including coronary vasospasm, coronary thrombosis, cardiomyopathy, and sudden cardiac death. This review addresses the incidence, mechanisms of action, clinical presentation, risk stratification, and management of 5-FU associated cardiotoxicity; it also highlights the importance of careful pre-administration cardiac risk stratification and close monitoring during and after drug administration.

In this large, multinational study, glucose levels that were increased during pregnancy but were below levels diagnostic of diabetes were significantly associated with increased risks of birth weight above the 90th percentile and C-peptide levels above the 90th percentile, as well as with other adverse pregnancy outcomes. These results indicate the need to reconsider current thresholds for diagnosing and treating hyperglycemia during pregnancy. Glucose levels that were increased during pregnancy but were below levels diagnostic of diabetes were significantly associated with increased risks of birth weight above the 90th percentile and C-peptide levels above the 90th percentile, as well as with other adverse pregnancy outcomes. Gestational diabetes mellitus, defined as “glucose intolerance with onset or first recognition during pregnancy,” 1 , 2 has been the subject of considerable controversy. Criteria for the diagnosis were initially established more than 40 years ago 3 and, with minor modifications, remain in use today. These criteria are not designed to identify pregnant women who are at increased risk for adverse perinatal outcomes but rather women who are at high risk for the development of diabetes after pregnancy, 3 , 4 or they are the criteria used for the general population. 5 Overt diabetes mellitus during pregnancy is associated with significantly increased risks of adverse perinatal . . .