Phenotypic profile of priority multiresistant Аcinetobacter baumannii sequence types (ST 1167, ST 944, ST 208)

Introduction. About 1,000,000 cases of infections caused by Acinetobacter spp. per year are registered globally, making up 1.8% of all the cases of hospital-acquired infections. In compliance with long-term studies carried out in in this country and abroad, Acinetobacter baumannii is a clinically important representative of the Acinetobacter genus. Intraspecific typing of microorganisms is an integral part of a clinical microbiologist's contribution to scoring the outbreaks of purulent-septic infections within the sphere of HAI surveillance. Most of the practicing microbiological laboratories cannot use genotypic typing methods because of their high costs.Objective. Developing a test panel for intraspecific identification of A. baumannii sequence types (ST 1167, ST 944, ST 208) based on their phenotypic properties.Materials and methods. Intraspecific membership of 74 A. baumannii strains obtained from four multipurpose health settings of a large industrial centre was studied using a genetic method (multilocus sequence typing) and a suite of phenotypic methods (biochemical tests, biofilmogenous capacity, growth inhibition zones to antibacterial drugs, sensitivity to aniline dyes, disinfectants and Acinetobacter bacteriophage) was studied.Results. Phenotypic features of three predominant A. baumannii sequence types (ST 1167, 944, 208) were determined.Discussion. An efficacious economy set of differentiating tests allowing identification of intraspecific features of A. baumannii multiresistant strains was сreated.Conclusion. The test panel will enable the laboratories that cannot use sequencing methods to conduct intraspecific differentiation of common A. baumannii sequence types as part of microbiological monitoring.

Pharmacogenetic Testing in an Academic Psychiatric Clinic: A Retrospective Chart Review

Pharmacogenomic (PGx) testing is being increasingly recognized by clinicians as an essential tool to guide medication decisions for treatment of psychiatric illnesses. Extensive implementation of PGx testing, however, varies by setting and location. In this retrospective study, we reviewed charts from 592 patients diagnosed with a psychiatric disorder at the Loyola University Medical Center, for whom PGx testing was performed. Information collected included demographics at the time of testing, psychiatric diagnosis, medical and psychiatric history and medications prior and after PGx testing. Of the 592 charts analyzed, the most common primary diagnoses were depression (52%) and anxiety (12%). Prior to PGx testing, 72% of patients were prescribed three or more medications, whereas, after testing, only 44% were prescribed three or more medications included in the test panel (p < 0.0001). The most common clinical consideration on the PGx reports was recommendation to reduce dosages (33%). After PGx testing, the proportion of patients taking incongruent medications decreased from 26% to 19% and that of patients taking congruent medications increased from 74% to 81% (p = 0.006). The results from this retrospective data analysis demonstrated a reduction in polypharmacy and an increase in recommendation-congruent medication prescribing resulting from implementation of PGx testing.

Carbon Dioxide Emissions, Urbanization Level and Industrial Structure: Empirical Evidence from North China

This paper aims to examine the nexus among carbon dioxide (CO2) emissions, urbanization level and industrial structure in North China over the period 2004–2019, according to an expanded Cobb-Douglas production function. The panel econometric techniques are employed to complete the empirical analysis, including cross-sectional correlation test, panel unit root test, panel cointegration test and panel Granger causality test. The empirical results support the long-term equilibrium relationship among CO2 emissions, urbanization level and industrial structure in North China, and the urbanization level contributes most to CO2 emissions, followed by fossil energy consumption. Furthermore, the bidirectional causality between CO2 emissions and urbanization level and unidirectional causality from industrial structure to CO2 emissions are found in North China, indicating that urbanization level and industrial structure have significant impacts on CO2 emissions. Finally, according to the empirical findings, several policy suggestions are proposed for the purpose of reducing CO2 emissions in North China.

One third of alloantibodies in patients with sickle cell disease transfused with African blood are missed by the standard red blood cell test panel

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Why it’s time to strengthen and widen the microbial test panel

The testing of culture media, and conducting microbiological method suitability studies, disinfectant efficacy studies, Antimicrobial Effectiveness Test (or Preservative Efficacy Test) and associated activities, requires the use of a test panel of microorganisms. These organisms need to be representative of the intended application and be of a suitable range in order to demonstrate that a low level of viable cells can be recovered without any indication of the inhibition of growth or excessive growth-promotion (typically defined as the recovery of between 50 to 200% of the challenge count). This activity provides the basis for the release of culture media or for verifying that a method is suitable for recovering any microorganisms that might be present in a product sample. This approach has been established for several decades and in many cases the types of organisms selected for the panel are drawn from guidance presented in the major pharmacopeia. The test panels of organisms recommended by compendia along with specific standards are in place to allow for reproducibility between laboratories. In the case of most standards (such as the disinfectant efficacy norms), these are designed to be multi-industry. Hence the presented organisms may or may not be suitable for the intended application. In addition, with the compendia, all too often the organisms recommended for, say, the Microbial Limit Test method verification, are applied to the release of all culture media used for all activities, be that the test for sterility or for the recovery of organisms from water systems. Not only is this inappropriate – for the microbiologist should be reviewing the panel and deciding upon the appropriate organisms – the recommended panels have not kept pace with improvements with our understanding of the types of microorganisms likely to cause contamination. Take, for example, the inclusion of Salmonella in the panel for the recovery of so-called ‘objectionable microorganisms’ for use with the Microbial Limits Test ¹. To my knowledge and based on discussions with microbiologists over a couple of decades, no Salmonella has ever been recovered from a raw material. Equally the selection, especially in relation to the testing of culture media used for cleanroom environmental monitoring, has not moved forwards with the findings from the human microbiome project and the depth of species richness found on the human skin microbiome. The argument that the test panel quoted in the compendia is representative and thus if culture media release testing can recover such organisms then it can reasonably be assumed that any other similar organisms can be recovered does not really hold up. Unless, that is, the only concern is with the recovery of non-fastidious mesophilic organisms. Instead, I maintain that in terms of the appropriate panel, this should be based on: • What is currently being recovered, and • What should theoretically be recovered.

Diagnostic yield from routine metabolic screening tests in evaluation of global developmental delay and intellectual disability

Global developmental delay and intellectual disability (GDD/ID) affect 3% of the paediatric population. Although inborn errors of metabolism (IEM) are not a common cause of GDD/ID, early therapeutic intervention can improve neurodevelopmental manifestations. In 2012, a first-tier test panel, including specialized metabolic and routine chemistry tests, was piloted to community-based paediatricians in British Columbia with aims to achieve earlier diagnosis of treatable IEM. Objective The aim of this retrospective review was to evaluate the diagnostic yield from these first-tier tests in the 7 years before (2006 to 2012) and after (2013 to 2019) implementation at the community paediatrician level. Results Prior and postimplementation diagnostic yield of an IEM from first-tier metabolic testing was 9 out of 986 (0.91%) and 11 out of 4,345 children (0.25%), respectively. Disorders of creatine metabolism and organic acidurias were the most frequently established diagnoses in both time periods. No diagnoses were established through acylcarnitine copper/ceruloplasmin, lactate, or ammonia testing. Twenty out of 24 patients had specific neurological or other red flag signs in addition to GDD/ID. Four boys diagnosed with an x-linked creatine transporter defect (CTD) had speech-language delay as the most prominent finding. Conclusions The expansion of first-tier metabolic testing to community-based paediatricians in BC did not yield an increase in IEM diagnoses. A modified first-tier test panel should be offered to patients with GDD/ID, neurologic, and/or red flag signs. Urine creatine testing in boys with speech-language delay warrants consideration to detect CTD.

Thermal Analysis on Pin-Fins With Hexagonal & Threaded Geometry In Natural and Forced Convection

In the present work of heat transfer for hexagonal fins (1mm & 2mm) grooves on surface and threaded fin is addressed. The test has been performed on three different fin geometries having hexagonal (1mm)groove, hexagonal(2mm)groove, threaded fin(0.5mm)pitch and test performed by using a centrifugal blower, test section, heater and test panel and Results are obtained for temperature distribution, effectiveness, efficiencies at a same flow rate of air as it was conducted in forced convection and the same parameters considered for different values are obtained for natural convection with different fins as well. In this experiment for forced convection, the airflow rate is constant i.e, 2.3371 m/sec throughout the experiment. In natural convection, efficiency for the threaded fin is high with 93.89% and effectiveness of hexagonal(2mm)depth fin is 28.11. In forced convection, the efficiency of the threaded fin is high with 81.83% and effectiveness of hexagonal(1mm)depth fin is high with 23.51 was recorded. The heat transfer rate is higher in natural convection is hexagonal(2mm)depth fin with 11.41 watts and 21.75 watts in forced convection with hexagonal(1mm)depth fin

Predicting primer and panel off-target rate in QIAseq targeted DNA panels using convolutional neural networks

In QIAseq targeted DNA panels, synthetic primers (short single-strand DNA sequences) are used for target enrichment via complementary DNA binding. Off-target priming could occur in this process when a primer binds to some loci where the DNA sequences are identical or very similar to the target template. These off-target DNA segments go through the rest of the workflow, wasting sequencing resources in unwanted regions. Off-target cannot be avoided if some segments of the target region are repetitive throughout the genome, nor can it be quantified until after sequencing. But if off-target rates can be prospectively predicted, scientists can make informed decisions about investment on high off-target panels.We developed pordle (predicting off-target rate with deep learning and epcr07), a convolutional neural network (CNN) model to predict off-target binding events of a given primer. The neural network was trained using 10 QIAseq DNA panels with 29,274 unique primers and then tested on an independent QIAseq panel with 7,576 primers. The model predicted a 10.5% off-target rate for the test panel, a -0.1% bias from the true value of 10.6%. The model successfully selected the better primer (in terms of off-target rate) for 89.2% of 3,835 pairs of close-by primers in the test panel whose off-target rates differ by at least 10%. The order-preserving property may help panel developers select the optimal primer from a group of candidates, which is a common task in panel design.

A Test Panel to Assess and Document an Absence of Concussive Signs for Sports Related Concussion

As sports-related concussions gain notoriety, legislation has also increased, placing greater liability on athletic trainers, who are typically the first to assess mild traumatic brain injury (mTBI). This has led to an increase in assessments for documenting an absence of or evidence of an mTBI. Although, their validationand standardization have been called into scrutiny. The purpose of this report is to develop and validate a neurologic test that provides objective evidence useful for documenting an absence of suspicious injury. In this retrospective cohort study, 26 athletes from the University of Cincinnati who incurred a suspicious concussive impact were evaluated using this assessment battery. Of the 26 athletes, 7 were found to have a suspicious injury and referred to a specialist for further work-up. All 7 were eventually diagnosed with a concussion. Nineteen were found to have an absence of suspicious injury, none of which developed delayed concussive symptoms.