Colorimetric Probe for Mn Using a Mixture of an Anionic Dye and a Cationic Polyelectrolyte in an Aqueous Solution.

A novel colorimetric probe for Mn was easily prepared by mixing negatively charged alizarin complexone (ALC) with positively charged poly[bis(2-chloroethyl)ether-alt-1,3-bis[3-(dimethylamino)propyl]urea] (PQ-2) in aqueous solutions at pH 6.0. Upon adding Mn to ALC alone, the solution underwent no distinct color change, while the mixture displayed selective detection of Mn over different physiological and environmentally significant metal ions by an efficient naked-eye color change from red to purple.

Colorimetric Detection of ATP by a Chlorophosphonazo III -based Mg Complex in Aqueous Solution via Indicator Displacement Approach.

A simple and effective colorimetric detection of adenosine 5-triphosphate (ATP) in 100% aqueous media was developed based on an indicator displacement approach (IDA). A commercially available dye, Chlorophosphonazo III (CPA), was utilized as the indicator and the ATP detection was achieved using the complex of CPA with Mg in a 2:1 stoichiometric ratio (CPA-Mg) through the regeneration of CPA by the binding of ATP to Mg. Upon addition of a series of anions to the CPA-Mg complex, only the appearance of the solution of the complex with ATP exhibited a color change from blue to purple which can be detected by the naked eye.

Colorimetric detection of homocysteine by a pyridylazo dye-based Cu complex via indicator displacement mechanism.

A BrPAPS based Cu complex has been developed as a colorimetric probe for the selective recognition of homocysteine (Hcy) over cysteine (Cys) and glutathione (GSH) in an aqueous solution via the indicator displacement assay. BrPAPS formed a complex with Cu in a 1:1 ratio (BrPAPS-Cu) accompanied by the color change from yellow to red. Detecting Hcy is based on high affinity of Hcy for Cu.

Trends in Hip Fracture Incidence in Japan: Estimates Based on Nationwide Hip Fracture Surveys From 1992 to 2017.

As of 2015, the aging population in Japan was the largest in the world. Although the National Database of Health Insurance Claims (NDB) was developed in 2012, long-term trends regarding hip fracture incidence in Japan remain unclear. In order to clarify the trend in hip fracture incidence from 1992 to 2017, we estimated the number of new hip fractures in 2017, the seventh in a series of nationwide hip fracture surveys performed every 5 years since 1987.

sp. nov., a galactomannan-degrading haloarchaeon isolated from commercial salt.

A mannan-degrading halophilic archaeal strain, MD130-1, was isolated from a commercial salt sample. Cells were motile, rod-shaped, and stained Gram-negative. Colonies were pink pigmented.

Colorimetric Chemosensor for Hg Based on Nuclear Fast Red and a Cationic Polyelectrolyte in Aqueous Solution.

We have developed a colorimetric chemosensor based on an anionic organic dye, commercially available nuclear fast red (NFR) and a cationic polyelectrolyte, poly(diallyldimethylammonium chloride) (PDADMAC) for detection of Hg in aqueous solution at physiological conditions. Upon addition of Hg, a bathchromic shift in the absorption was observed concomitantly with color change from pink to reddish violet which was easily detectable by the naked eye, while such a change was not observed for NFR alone, indicating that PDADMAC played an important role in detecting Hg. This investigation can propose the simple and valuable construction method for a novel chemosensor by mixture of a water-soluble organic dye and an oppositely charged polyelectrolyte.

Colorimetric detection of oxalate in aqueous solution by a pyrogallol red-based Cu complex.

The pyrogallol red (PR)-based Cu complex was proven to be an effective and selective colorimetric chemosensing ensemble for recognition of oxalate over other anions in a perfect aqueous solution. The addition of oxalate to the PR-Cu complex resulted in a colour change from purple to orange colour due to the regeneration of PR by the chelation of oxalate with Cu , while other anions did not induce any significant colour change. Moreover, it was revealed that no obvious interference was observed during the titrations with oxalate into each other anion.

Salinarchaeum chitinilyticum sp. nov., a chitin-degrading haloarchaeon isolated from commercial salt.

Two chitin-degrading halophilic archaeal strains, MC-74T and MC-23, were isolated from commercial salt samples. Cells were motile, rod-shaped and stained Gram-negative. Colonies were vermillion-pigmented.

Colorimetric Determination of Pb in Perfect Aqueous Solution Using Carminic Acid as a Selective Chemosensor.

The commercially available natural organic dye, carminic acid (CA), an anthraquinone derivative bearing hydroxyl and carboxyl groups as recognition sites was found to be a colorimetric probe for Pb in perfect aqueous solution under neutral conditions with specific selectivity and high sensitivity. Upon addition of Pb, the absorption maximum of CA showed a large red shift, and the resulted color change from red to purple could be easily identified even by the naked eye. The chemical stoichiometric ratio between CA and Pb was determined to be 1:2 through Job plot, Pb titration, and kinetic experiments.

Haloparvum alkalitolerans sp. nov., alkali-tolerant haloarchaeon isolated from commercial salt.

A Gram-stain-negative, rod-pleomorphic, aerobic, halophilic archaeon, strain MK62-1T, was isolated from commercial salt made from seawater in the Philippines. Strain MK62-1T was able to grow at 2.1-4.

Halorubrum gandharaense sp. nov., an alkaliphilic haloarchaeon from commercial rock salt.

A Gram-stain-negative, non-motile, pleomorphic rod-shaped, orange-red-pigmented, facultatively aerobic and haloalkaliphilic archaeon, strain MK13-1T, was isolated from commercial rock salt imported from Pakistan. The NaCl, pH and temperature ranges for growth of strain MK13-1T were 3.0-5.

Hip fracture incidence in Japan: estimates of new patients in 2007 and 20-year trends.

SUMMARY: We estimated the number of hip fracture patients in 2007 in Japan and investigated the trends in incidence during a 20-year period from 1987 to 2007. Despite the increasing number of new patients, the incidence of hip fracture in some age groups showed the possibility of decline. PURPOSE: The aims of this study were to estimate the number of hip fracture patients in 2007, to investigate the trends in incidence during a 20-year period from 1987 to 2007, and to show the regional differences in Japan.