A stable Cerberus tris(maloNHC) and its coinage metal complexes.

The first trisanionic Cerberus-type maloNHC has been generated and coordinated to two different coinage metals (Au(i) and Ag(i)). The resulting triszwitterionic metal complexes have been characterized by NMR spectroscopy, elemental analysis, and X-ray crystallography. The molecular structures of the new metal complexes reveal an average AuAu and AgAg separation of 20.

Selecting Household Water Treatment Options on the Basis of World Health Organization Performance Testing Protocols.

The World Health Organization's International Scheme to Evaluate Household Water Treatment Technologies serves to benchmark microbiological performance of existing and novel technologies and processes for small-scale drinking water treatment according to a tiered system. There is widespread uncertainty around which tiers of performance are most appropriate for technology selection and recommendation in humanitarian response or for routine safe water programming. We used quantitative microbial risk assessment (QMRA) to evaluate attributable reductions in diarrheal disease burden associated with water treatment technologies meeting the three tiers of performance under this Scheme, across a range of conditions.

More Evidence of Collusion: a New Prophage-Mediated Viral Defense System Encoded by Mycobacteriophage Sbash.

The arms race between bacteria and their bacteriophages profoundly influences microbial evolution. With an estimated 10 phage infections occurring per second, there is strong selection for both bacterial survival and phage coevolution for continued propagation. Many phage resistance systems, including restriction-modification systems, clustered regularly interspaced short palindromic repeat-Cas (CRISPR-Cas) systems, a variety of abortive infection systems, and many others that are not yet mechanistically defined, have been described.

Yet More Evidence of Collusion: a New Viral Defense System Encoded by Phage CarolAnn.

Temperate phages play important roles in the physiology of their bacterial hosts and establish a lysogenic relationship with the host through which prophage-expressed genes confer new phenotypes. A key phenotype is prophage-mediated defense against heterotypic viral attack, in which temperate phages collude with their bacterial host to prevent other phages from attacking, sometimes with exquisite specificity. Such defense systems have been described in and phages but are likely widespread throughout the microbial community.

Racial and Ethnic Disparities in HIV Pre-exposure Prophylaxis Awareness Among Men Who have Sex with Men.

Racial and ethnic disparities exist in HIV pre-exposure prophylaxis (PrEP) awareness and care. We evaluated how racial and ethnic disparities in PrEP awareness among MSM presenting to a sexually transmitted disease clinic changed from 2013 to 2016. Among 1243 MSM (68% non-Hispanic White, 22% Hispanic, and 10% non-Hispanic Black), PrEP awareness increased overall, but awareness was lower among Hispanic and non-Hispanic Black MSM relative to non-Hispanic White MSM.

Urbanization in India: Population and Urban Classification Grids for 2011.

India is the world's most populous country, yet also one of the least urban. It has long been known that India's official estimates of urban percentages conflict with estimates derived from alternative conceptions of urbanization. To date, however, the detailed spatial and settlement boundary data needed to analyze and reconcile these differences have not been available.

Impact of Lipotoxicity on Tissue "Cross Talk" and Metabolic Regulation.

Obesity-associated comorbidities include non-alcoholic fatty liver disease, Type 2 diabetes, and cardiovascular disease. These diseases are associated with accumulation of lipids in non-adipose tissues, which can impact many intracellular cellular signaling pathways and functions that have been broadly defined as "lipotoxic." This review moves beyond understanding intracellular lipotoxic outcomes and outlines the consequences of lipotoxicity on protein secretion and inter-tissue "cross talk," and the impact this exerts on systemic metabolism.

The surprisingly facile formation of Pd(i)-phosphido complexes from ortho-biphenylphosphines and palladium acetate.

The widely-used ortho-biphenylphosphine ligands SPhos and RuPhos not only undergo facile orthometallation with palladium acetate, yielding strained, four-membered dimeric palladacycles but more surprisingly, in the presence of alcoholic solvents, along with the less encumbered analogue MePhos, yield unusual dinuclear Pd(i) complexes, in which the Pd-centers are bridged by both a phosphide ligand and by the arene of a coordinated phosphine donor.

Increasing Syphilis in Rhode Island: Return of an Old Foe.

The number of people diagnosed with syphilis has increased significantly in the United States over the last decade. In Rhode Island, the number of new diagnoses has increased more than four-fold since 2008. Syphilis disproportionately impacts gay, bisexual, and other men who have sex with men (MSM), with those from African American and Hispanic/Latino communities most affected.

The structure of the catalytic domain of the ATP synthase from is a target for developing antitubercular drugs.

The crystal structure of the F-catalytic domain of the adenosine triphosphate (ATP) synthase has been determined from which hydrolyzes ATP very poorly. The structure of the αβ-component of the catalytic domain is similar to those in active F-ATPases in and However, its ε-subunit differs from those in these two active bacterial F-ATPases as an ATP molecule is not bound to the two α-helices forming its C-terminal domain, probably because they are shorter than those in active enzymes and they lack an amino acid that contributes to the ATP binding site in active enzymes. In and , the α-helices adopt an "up" state where the α-helices enter the αβ-domain and prevent the rotor from turning.

Alterations in the glycome after HDAC inhibition impact oncogenic potential in epigenetically plastic SW13 cells.

Background: Defects in the type and degree of cellular glycosylation impact oncogenesis on multiple levels. Although the type of glycosylation is determined by protein sequence encoded by the genome, the extent and modifications of glycosylation depends on the activity of biosynthetic enzymes and recent data suggests that the glycome is also subject to epigenetic regulation. This study focuses on the ability of HDAC inhibition to alter glycosylation and to lead to pro-oncogenic alterations in the glycome as assessed by metastatic potential and chemoresistance.

Perilipin 5 Deletion in Hepatocytes Remodels Lipid Metabolism and Causes Hepatic Insulin Resistance in Mice.

Defects in hepatic lipid metabolism cause nonalcoholic fatty liver disease and insulin resistance, and these pathologies are closely linked. Regulation of lipid droplet metabolism is central to the control of intracellular fatty acid fluxes, and perilipin 5 (PLIN5) is important in this process. We examined the role of PLIN5 on hepatic lipid metabolism and systemic glycemic control using liver-specific -deficient mice ( ).

Understanding urbanization: A study of census and satellite-derived urban classes in the United States, 1990-2010.

Most of future population growth will take place in the world's cities and towns. Yet, there is no well-established, consistent way to measure either urban land or people. Even census-based urban concepts and measures undergo frequent revision, impeding rigorous comparisons over time and place.

Intratumoral CD56 natural killer cells are associated with improved survival in bladder cancer.

Background: Natural killer (NK) cells are effective at killing tumors in a non-MHC restricted manner and are emerging targets for cancer therapy but their importance in bladder cancer (BC) is poorly defined. NK cells are commonly subdivided into populations based on relative surface expression of CD56. Two major subsets are CD56 and CD56 NK cells.

Association between gait mechanics and ultrasonographic measures of femoral cartilage thickness in individuals with ACL reconstruction.

Background: Individuals with anterior cruciate ligament reconstruction (ACLR) are at greater risk for knee osteoarthritis, which may be in part due to altered gait biomechanics. Articular cartilage thickness is typically imaged using magnetic resonance imaging, which is costly and lacks portability. Ultrasonography may provide an alternative imaging method for articular cartilage.

Brief Report: Pre-exposure Prophylaxis Awareness and Use Among Cisgender Women at a Sexually Transmitted Disease Clinic.

Background: Pre-exposure prophylaxis (PrEP) is highly effective in preventing HIV transmission. Cisgender women (cis-women) constitute only a small proportion of PrEP users in the United States despite accounting for 19% of new HIV infections in 2016.

Setting: The Rhode Island Sexually Transmitted Diseases (STD) Clinic from 2013 to 2016.

Suitability of dried DNA for long-range PCR amplification and HLA typing by next-generation sequencing.

Storage and stable shipment of genomic DNA are of great concern to laboratories that may need to perform testing off archived samples. There are some dry-state storage methods that are available that have the potential to provide a way to store samples at room temperature for long periods of time as well as offer a means to ship DNA to other facilities without the same safety concerns that come with shipping liquid samples. The recovered DNA should be of sufficient integrity such that downstream applications can be performed without concern of the sample quality.

Method for the Fabrication of Elastomeric Polyester Scaffolds for Tissue Engineering and Minimally Invasive Delivery.

Using the methods described herein, we have demonstrated how scaffolds can be designed for a number of applications including tissue engineering, biomedical devices and injectable tissues. Details on the methods of polymerization and physical and chemical characterization of poly(octamethylene maleate (anhydride) citrate (POMaC) are described. Two POMaC polymer recipes with different monomer ratios of maleic anhydride and citric acid were synthesized and compared.

A Nearly 50% Decrease in New HIV Diagnoses in Rhode Island from 2006-2016: Implications for Policy Development and Prevention.

In the last decade, reductions in HIV incidence have been observed across the United States. However, HIV continues to disproportionately impact gay, bisexual, and other men who have sex with men (MSM). In Rhode Island, rates of HIV diagnoses have decreased by 44% across all groups over the last decade.

Disclosure of HIV Serostatus and Pre-exposure Prophylaxis Use on Internet Hookup Sites Among Men Who have Sex with Men.

Men who have sex with men (MSM) who use websites and smartphone applications to meet sexual partners ("hookup sites") may be at increased HIV risk. Many sites provide profile options to disclose HIV status and pre-exposure prophylaxis (PrEP) use. Little is known about the acceptability of disclosure options which may guide sexual decision-making.

Effect of hemostatic device on radial artery occlusion: A randomized comparison of compression devices in the radial hemostasis study.

Background: Asymptomatic radial artery occlusion (RAO) is a major limitation of transradial catheterization (TRC). Two radial compression hemostatic devices are compared for their respective effects on RAO.

Methods: In a prospective, randomized, single center, blinded trial, 320 patients were randomly treated with a TR band (Terumo Corporation) or Safeguard Radial (Merit Medical).

Multidrug-Resistant Campylobacter jejuni Outbreak Linked to Puppy Exposure - United States, 2016-2018.

Campylobacter causes an estimated 1.3 million diarrheal illnesses in the United States annually (1). In August 2017, the Florida Department of Health notified CDC of six Campylobacter jejuni infections linked to company A, a national pet store chain based in Ohio.