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Globally, large increases in older adult populations require that psychological assessments are tailored to evaluate psychopathology by considering both language and culture. In Mexico, there are little to no assessment tools which measure multiple areas of psychopathology specific to older adults. The current study tested the psychometric properties of the Spanish version of Older Adult Self Report (OASR) from Achenbach System of Empirically Based Assessment (ASEBA). The OASR was completed by 308 older adults in Mexico. Confirmatory factor analyses tested the fit of the 7-syndrome OASR model originally derived from a U.S. sample. The primary model fit index (Root Mean Square Error of Approximation) showed good fit for individuals from Mexico, while the secondary model fit indices (Comparative Fit Index/Tucker-Lewis Index) showed acceptable to good fit. The items loaded strongly on their respective syndrome factors, with a median loading of .57. By syndrome, the overall median loadings ranged from .414 (Worries) to .643 (Memory/Cognition Problems); and 98.23% of the loadings were statistically significant. The Latin American Spanish OASR demonstrated proper psychometric properties for the sample indicating that it is suitable for use with older adults in or from Mexico. The OASR offers 7 empirically based clinical constructs that are appropriate for older adults in or from Mexico. It provides a structure which can use to assess and communication issues of psychopathology and adaptive functioning improving overall care and research in geriatric psychiatry, notably when considering diverse populations., Author(s): Veronica Portillo-Reyes [sup.1] , John William IV Capps [sup.2] , Yolanda Loya-Mèndez [sup.1] , Margarita Portillo-Reyes [sup.1] Author Affiliations: (1) grid.441213.1, 0000 0001 1526 9481, Universidad Autónoma de Ciudad [...]

A photochemical reactor was tested in an undergraduate teaching laboratory through the environmentally friendly aromatization of a 1,4-dihydropyridine, successfully using air as an oxidant, organic dye fluorescein as a photosensitizer, and sodium carbonate as a base. This experiment allowed students to be taught key concepts of photochemistry, organic photoredox catalysis, and green chemistry for the first time. Herein, we describe the making of the simple, yet robust, high-intensity blue LED photoreactor. The durable device was constructed with materials acquired at a hardware store and electronics shop.

Background: With continuously aging societies, an increase in the number of people with cognitive decline is to be expected. Aside from the development of causative treatments, the successful implementation of prevention strategies is of utmost importance to reduce the high societal burden caused by neurodegenerative diseases leading to dementia among which the most common cause is Alzheimer's disease. Objective: The aim of the Luxembourgish "programme dementia prevention (pdp)" is to prevent or at least delay dementia in an at-risk population through personalized multi-domain lifestyle interventions. The current work aims to provide a detailed overview of the methodology and presents initial results regarding the cohort characteristics and the implementation process. Methods: In the frame of the pdp, an extensive neuropsychological evaluation and risk factor assessment are conducted for each participant. Based on the results, individualized multi-domain lifestyle interventions are suggested. Results: A total number of 450 participants (Mean age = 69.5 years; SD = 10.8) have been screened at different recruitment sites throughout the country, among whom 425 participants (94.4%) met the selection criteria. Conclusions: We provide evidence supporting the feasibility of implementing a nationwide dementia prevention program and achieving successful recruitment of the target population by establishing a network of different healthcare providers. [ABSTRACT FROM AUTHOR]

The asymmetric ring opening of azlactones via dynamic kinetic resolution (DKR) is investigated by contrasting thioureas incorporating 1-arylethyl substituents against their more acidic trifluoromethylated analogs. All the catalysts under study outperform Takemoto's thiourea because of the inclusion of an additional chiral center. However, the difference in yield and selectivity between the fluorinated and non-fluorinated catalysts is minimal. We explain this observation by analysis of calculated transition states. Our findings show that the hydrogen bond (HB) between the NH linked to the 1-arylethyl and the negatively charged oxygen in the benzyloxy ion is the longest in the HB network, whereas the HB between the ammonium group and the same oxygen atom is the shortest. Thus, the substituents and the HB donor ability of this chiral fragment attached to the thiourea are not important in the reaction. [ABSTRACT FROM AUTHOR]

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We used our recently proposed acidity–basicity interplay (ABI) model (Chem. Sci., 2018, 9, 4402) and the Jorgensen secondary interactions hypothesis (JSIH) to rationalise the experimentally observed trends in the formation constants of doubly and triply H-bonded systems with –NH…O=C– and –NH…N– interactions. Unlike the JSIH, the ABI interpretation can explain the trends in the complexation of amide/imide homo- and heterodimers as well as ADA–DAD clusters. We found that the strongest H-bonds play a very important role, a condition which offers an alternative to the well established JSIH to modulate the stability of these relevant systems. [ABSTRACT FROM AUTHOR]

Acute bacterial sinusitis is a common disorder affecting children and adults. We performed a study to assess the bacteriology of acute sinusitis in a community hospital in Mexico City. Patients with an acute exacerbation of persistent sinusitis or acute sinusitis were enrolled. Aspiration of sinus secretions was performed and aspirates were sent for culture. All patients received antibiotic treatment for the infection based on microbiologic sensitivity reports. Follow-up consultation included endoscopy and a computed tomography scan of paranasal sinuses to assess response to treatment. A total of 110 patients were enrolled for evaluation. Forty nine percent of patients were women; median age was 31 years. A total of 136 cultures were recovered for analysis. Twenty seven percent of cultures were negative. Isolated organisms were Haemophilus influenzae (26%), Moraxella catarrhalis (15%), Streptococcus pneumoniae (14%), methicillin-sensitive Staphylococcus aureus (7%), enterobacteriaceae (6%), Pseudomonas aeruginosa (2%) and miscellaneous (3%). Twenty eight percent of H. influenzae strains were resistant to ampicillin. Penicillin-sensitive S. pneumoniae (PSSP) and penicillin-intermediate-resistant S. pneumoniae (PISP) accounted for 21% and 79% of the S. pneumoniae strains, respectively. H. influenzae was the most common isolated organism. About 55% of those isolates were found in patients <18 years old and only 25% were resistant to ampicillin. Sinus endoscopy continues to be a useful diagnostic tool in addition to imaging studies in sinus infection and should be pursued by the clinician whenever feasible. [Copyright &y& Elsevier]

We report a one-pot synthesis of chiral β 2,2,3 -amino acids by the Mannich addition of bistrimethylsilyl ketene acetals to N-tert-butanesulfinyl imines followed by the removal of the chiral auxiliary. The synthesis and isolation of pure β-amino acid hydrochlorides were conducted under mild conditions, without strong bases and this method is operationally simple. The stereoselective reaction was promoted by two different activation methods that lead to different stereoisomers: (1) Lewis Acid (LA) catalysis with boron trifluoride diethyl etherate and (2) Lewis Base (LB) catalysis with tetrabutylammonium difluorotriphenylsilicate. The reaction presented good diastereoselectivity with LB activation and moderate to good dr with LA catalysis. The exceptions in both protocols were imines with electron donating groups in the aromatic ring.