Tag: pubmed

Ultrasonics. 2021 Mar 6;114:106419. doi: 10.1016/j.ultras.2021.106419. Online ahead of print.

ABSTRACT

Grading red blood cell (RBC) aggregation is important for the early diagnosis and prevention of related diseases such as ischemic cardio-cerebrovascular disease, type II diabetes, deep vein thrombosis, and sickle cell disease. In this study, a machine learning technique based on an adaptive analysis of ultrasonic radiofrequency (RF) echo signals in blood is proposed, and its feasibility for classifying RBC aggregation is explored. Using an adaptive empirical wavelet transform (EWT) analysis, the ultrasonic RF signals are decomposed into a series of empirical mode functions (EMFs); then, dominant empirical mode functions (DEMFs) are selected from the series. Six statistical characteristics, including the mean, variance, median, kurtosis, root mean square (RMS), and skewness are calculated for the locally normalized DEMFs, aiming to form primary feature vectors. Random forest (RDF) and support vector machine (SVM) classifiers are trained with the given feature vectors to obtain prediction models for RBC classification. Ultrasonic RF echo signals are acquired from five groups of six types of porcine blood samples with average numbers of aggregated RBCs of 1.04, 1.20, 1.83, 2.31, 2.72, and 4.28, respectively, to test the classification performance of the proposed method. The best subset with regard to the variance, kurtosis, and RMS is determined according to the maximum accuracy based on the RDF and SVM classifiers. The classification accuracies are 84.03 ± 3.13% for the RDF classifier, and 85.88 ± 2.99% for the SVM classifier. The mean classification accuracy of the SVM classifier is 1.85% better than that of the RDF classifier. In conclusion, the machine learning method is useful for the discrimination of varying degrees of RBC aggregation, and has potential for use in characterizing and monitoring the RBC aggregation in vessels.

PMID:33740499 | DOI:10.1016/j.ultras.2021.106419

Biomed Pharmacother. 2021 Mar 16;138:111423. doi: 10.1016/j.biopha.2021.111423. Online ahead of print.

ABSTRACT

With the aging population, coronary syndrome is one of the leading causes of mortality. Atherosclerosis is the pathophysiological basis of coronary syndrome, which is caused by plaque rupture and predisposed or aggravated by many perioperative complications. Parecoxib is one of the most widely used nonsteroidal anti-inflammatory perioperative drugs. This study aims to evaluate the potential benefits of parecoxib on atherosclerosis progression. Apolipoprotein E-deficient (Apo E-/-) mice were intraperitoneally injected by parecoxib (par group) or saline (control group) and, meanwhile, were given a western diet for 12 weeks. The aorta and aortic root were examined by oil red O (ORO) staining for atherosclerotic lesions. The expression level of matrix metalloproteinases (MMPs), was investigated using immunofluorescence and western blot. Macrophage inflammation was investigated by Q-PCR. Parecoxib treatment increased the number of vascular smooth muscle cells (VSMC) and amount of collagen, while and decreased the number of macrophages in murine aortic walls. The expression of MMP1, 2, 9, and 13 as well as IL- 1β and IL-6 were also decreased in the par group. However, there was no statistical difference in lipid infiltration between the two groups. Parecoxib could improve plaque stability by suppressing inflammation and inhibiting MMPs production.

PMID:33740522 | DOI:10.1016/j.biopha.2021.111423

J Am Geriatr Soc. 2021 Mar 19. doi: 10.1111/jgs.17101. Online ahead of print.

ABSTRACT

BACKGROUND/OBJECTIVES: Coexistent seizures add complexity to the burden of Alzheimer’s disease (AD). We aim to estimate the incidence and prevalence of coexistent seizures and AD and summarize characteristics.

DESIGN: A systematic review and meta-analysis (PROSPERO protocol registration CRD42020150479).

SETTING: Population-, community-, hospital-, or nursing home-based.

PARTICIPANTS AND MEASUREMENTS: Thirty-nine studies reporting on seizure incidence and prevalence in 21,198 and 380,777 participants with AD, respectively, and AD prevalence in 727,446 participants with seizures. When statistical heterogeneity and inconsistency (assessed by Q statistic and I² ) were not shown, rates were synthesized using random effect.

RESULTS: Studies were conducted in Australia, Brazil, Finland, France, Ireland, Italy, Japan, Netherlands, Portugal, Sweden, Taiwan, United Kingdom, and United States. The incidence of seizures among people with clinically diagnosed AD ranged from 4.2 to 31.5 per 1000 person-years. Prevalence of seizures among people with clinically diagnosed AD ranged from 1.5% to 12.7% generally, but it rose to the highest (49.5% of those with early-onset AD) in one study. Meta-analysis reported a combined seizure prevalence rate among people with pathologically verified AD at 16% (95% confidence interval [CI] 14-19). Prevalence of seizure in autosomal dominant AD (ADAD) ranged from 2.8% to 41.7%. Being younger was associated with higher risk of seizure occurrence. Eleven percent of people with adult-onset seizures had AD (95%CI, 7-14).

CONCLUSION: Seizures are common in those with AD, and seizure monitoring may be particularly important for younger adults and those with ADAD.

PMID:33740274 | DOI:10.1111/jgs.17101

Vopr Pitan. 2021;90(1):6-14. doi: 10.33029/0042-8833-2021-90-1-6-14. Epub 2021 Jan 20.

ABSTRACT

Vitamin D with its steroid structure is currently considered as a hormone. New target cells of this hormone have been identified, including those in the organs of the reproductive system. The aim – to analyze modern sources of domestic and foreign scientific literature covering the role of vitamin D in the reproductive health of women of different ages. Results. The Russian Federation is endemic in terms of vitamin D deficiency. According to statistics, a lack of this vitamin is observed in 70-90% of the population of the USA and European countries, which brings this problem to the international level. It has been established that vitamin D affects not only bone-mineral homeostasis, but also many organs and tissues, including the reproductive system, namely the ovaries, uterus, placental tissue, pituitary gland and male reproductive organs. Studies have proven the positive effect of this hormone on the course of polycystic ovary syndrome, endometriosis, diabetes mellitus (including gestational). In addition, it has been shown that vitamin D is an important micronutrient during pregravid preparation, and the normalization of its level can improve the quality and increase the life expectancy of women after 50-60 years. Conclusion. Vitamin D plays an important role in many physiological processes, including the effects on the organs of the reproductive system. The significant influence of this vitamin can be traced from the beginning of intrauterine development to the end of life, which makes its further study an important area of modern medicine, including within the framework of obstetrics and gynecology.

PMID:33740323 | DOI:10.33029/0042-8833-2021-90-1-6-14

Vopr Pitan. 2021;90(1):15-32. doi: 10.33029/0042-8833-2021-90-1-15-32. Epub 2021 Jan 20.

ABSTRACT

Specialized products and dietary supplements, enriched with complexes of minor biologically active substances (BAS), are often offered as components of therapeutic diets in the treatment of obesity and metabolic syndrome. At the same time, the possible effects of the interactions of BAS when consuming a multicomponent product have not been studied enough. The aim – to study the action on rats’ organism of a complex supplement (RС), containing resveratrol (Res) and L-carnitine (L-Car), when consumed with a standard balanced or hypercaloric diet. Material and methods. Male Wistar rats received for 63 days a standard balanced diet (SD) or a high-fat-high-carbohydrate diet (HFCD) with an excess of total fat (30%) and fructose (20% solution instead of drinking water), or the same diets supplemented with RС in a low (25 mg/kg body weight as Res and 300 mg/kg body weight as L-Car) or high (50 and 600 mg/kg body weight, respectively) doses. The muscle grip strength, behavioral reactions in tests of the conditioned passive avoidance reflex (CPAR) and elevated plus maze (EPM) were studied. At the end of the experiment, the mass of adipose tissue and internal organs was determined together with the activity of microsomal and cytosolic liver enzymes for specific substrates, plasma biochemical parameters, liver morphology by lightoptical microscopy, accumulation of lipofuscin-like granules (LLG) in the liver and kidneys by laser confocal microscopy. Results. In the rats fed HFCD, compared with SD, there was an increase in the mass index of liver, total inguinal and retroperitoneal white adipose tissue, in the levels of glucose and triglycerides, in the activity of hepatic CYP1A1 and CYP3A monooxygenases, UDPglucuronosyltransferase, heme oxygenase, and simultaneous decrease of high and low density lipoprotein cholesterol, and quinone oxidoreductase activity. The RС intake stimulated the locomotor activity of rats in EPM, however, this effect was less pronounced against the background of HFCD consumption. In rats consuming SD (but not HFCD), the addition of RС caused an increase in search activity and anxiety according to the EPM and CPAR data. The effect on short- and long-term memory retention was statistically insignificant. RС intake did not have hypolipidemic and hypoglycemic properties but caused in low dose an increase in the ratio of the activity of transaminases AST/ALT in animals fed HFCD. The liver CYP3A activity increased in rats supplemented with RС in high dose fed HFCD. In the kidneys of animals, the consumption of RС resulted in increased accumulation of LLG. Conclusion. When studying the effect of the complex supplement RС on normal and obese rats according to the studied physiological, morphological and biochemical indexes, no positive effects were revealed, that would not have manifested themselves for Res and L-Car separate intake. No evidence of synergistic action of L-Car and Res were found, and some of the effects of the complex supplement can be considered as adverse. This requires careful assessment when combined using these substances in complex diet therapy of metabolic disorders in humans.

PMID:33740324 | DOI:10.33029/0042-8833-2021-90-1-15-32

Adv Ther. 2021 Mar 19. doi: 10.1007/s12325-021-01686-x. Online ahead of print.

ABSTRACT

INTRODUCTION: To evaluate the efficacy and safety of sublingual immunotherapy (SLIT) with standardized Dermatophagoides farinae (Df) drops in monosensitized and polysensitized patients with allergic rhinitis (AR) and to analyze the adverse events (AEs).

METHODS: A retrospective analysis was performed using data for 68 patients with AR who received SLIT. The patients were divided into a monosensitized group (36 cases) and a polysensitized group (32 cases) based on serum-specific IgE test results. In the two groups of patients, total nasal symptoms score (TNSS), total medication score (TMS), visual analog scale (VAS) score, and AEs before treatment and at 1, 3, 6, and 12 months of treatment were evaluated.

RESULTS: Compared with that before treatment, the TNSS, TMS, and VAS score in the monosensitized and polysensitized groups all decreased significantly at 3, 6, and 12 months of SLIT (all P < 0.05). There were no significant differences in treatment efficacy indicators between the two groups at all treatment time points (all P > 0.05). In terms of safety, compared with 1 month after initiating SLIT, the incidence of AEs in the monosensitized and polysensitized groups at 6 and 12 months of treatment significantly decreased (all P < 0.05). There was a statistically significant decrease in the incidence of AEs in both groups at 6 months compared with 3 months of treatment (χ² = 1.92 and 5.85, respectively, all P < 0.05). The difference in incidence of AEs between the monosensitized and polysensitized groups was not statistically significant at any treatment time point (all P > 0.05). AEs in all patients were local mild reactions; no serious AEs were found.

CONCLUSION: SLIT with standardized Df drops has similar efficacy and safety for monosensitized and polysensitized patients with AR. AEs mostly occurred during the first 3 months of SLIT in both the monosensitized and polysensitized groups, and the incidence of AEs gradually decreased as the course of treatment extended.

PMID:33740216 | DOI:10.1007/s12325-021-01686-x

Adv Ther. 2021 Mar 19. doi: 10.1007/s12325-021-01695-w. Online ahead of print.

ABSTRACT

INTRODUCTION: This study was designed to understand the baseline salt intake of adult patients with hypertension in Shanxi Province, and to analyze the correlation between urinary sodium excretion and blood pressure.

METHODS: From June 2018 to December 2019, 16 hospitals with regional representativeness and experimental conditions in Shanxi Province were selected, and 643 eligible adult inpatients with primary hypertension were enrolled from these hospitals. The ages of patients ranged from 18 to 80 years. A 24-h ambulatory blood pressure monitoring was performed, and morning urine sodium concentration and 24-h urine sodium excretion were measured. The correlation between urinary sodium excretion and blood pressure in adult patients with hypertension was analyzed.

RESULTS: The baseline salt intake of the adult patient participants with hypertension in Shanxi Province was 11.51 g/day. The average 24-h urinary sodium excretion of all observed subjects was 191.90 ± 98.18 mmol. The 24-h urinary sodium excretion and morning urinary sodium concentration were significantly positively correlated with systolic and diastolic blood pressure following adjustment of confounding factors, including gender, age, body weight, and smoking.

CONCLUSION: The morning urine sodium concentration and 24-h urine sodium excretion were significantly positively correlated with blood pressure. High sodium excretion may be a risk factor for rhythm abnormalities in non-dipper pattern blood pressure. The control of urinary sodium concentration can thus be an important strategy for regulating abnormal blood pressure rhythm.

PMID:33740217 | DOI:10.1007/s12325-021-01695-w

J Surg Oncol. 2021 Mar 19. doi: 10.1002/jso.26333. Online ahead of print.

ABSTRACT

BACKGROUND AND OBJECTIVES: To investigate the effects of different suture reinforcement methods for anastomotic leakage and other postoperative complications after the use of a laparoscopic double stapling technique (DST).

METHODS: We collected the data of 124 patients who underwent laparoscopic radical resection of colorectal cancer from July 2017 to September 2018 at our institution. Patients were divided into three groups according to the suture reinforcement methods: intermittent, continuous suture reinforcement, and non-reinforcement (n = 41, 41, and 42, respectively). One-way analysis of variance, χ² , Fisher’s exact, and nonparametric tests were used for statistical analysis.

RESULTS: Among the 124 patients, there were no statistically significant differences in operation times, intraoperative blood loss, postoperative hospital stays and recovery of bowel movement. Nine patients were diagnosed with anastomotic leakage (AL). The incidences of serious AL in the intermittent and continuous suture reinforcement groups were lower than that in the control group, with lower reoperation rate, shorter average lengths of stay and lower treatment costs of two experimental groups.

CONCLUSION: Intermittent and continuous sutures after laparoscopic DST is effective, safe, and feasible on anastomotic leakage prevention. These procedures could be popularized in rectal surgery on patients with high risk of AL.

PMID:33740257 | DOI:10.1002/jso.26333

Odontology. 2021 Mar 19. doi: 10.1007/s10266-021-00599-z. Online ahead of print.

ABSTRACT

Peri-implantitis is caused by microbial contamination and biofilm formation on the implant surface. To achieve re-osseointegration, the microbes must be completely removed from the surface. Adjunctive to mechanical cleaning, chemical treatment with enzymes or other substances could optimise the treatment outcome. Therefore, we investigated the efficacy of different enzymes, a surfactant, and a chelator in destabilising dental polymicrobial biofilm. The biofilm destabilising effect of the glycosidases α-amylase, dextranase, DispersinB^®, and lysozyme, as well as the proteinase subtilisin A, and the nuclease Benzonase^®, the chelator EDTA, and the surfactant cocamidopropyl betaine were investigated on biofilms, inoculated with plaque on rough titanium discs. The test and the control solutions were incubated for 15 min at 36 °C on biofilms, and loosened biofilm mass was removed by shear stress with a shaker. Fluorescence-stained biofilms were microscopically analysed. Acceptable cell tolerability concentrations of test substances were determined by the MTT (tetrazolium dye) assay on the MG-63 cell line. A statistically significant biofilm destabilising effect of 10% was shown with lysozyme (2500 µg/ml).

PMID:33740161 | DOI:10.1007/s10266-021-00599-z

Adm Policy Ment Health. 2021 Mar 19. doi: 10.1007/s10488-021-01128-4. Online ahead of print.

ABSTRACT

Funding is a major barrier to implementation of evidence-based practices (EBPs) in publicly-funded community mental health clinics (CMHCs). Understanding how best to deploy implementation strategies that address this barrier requires greater clarity on the financial context within agencies. We developed the Agency Financial Status Scales (AFSS) to assess employee perceptions of the level of three hypothesized and theoretical funding related constructs in organizations: (a) perceptions of financial health, (b) financial attitudes toward EBPs, and (c) strategic financial climate. This investigation serves as a preliminary evaluation of this measure. Participants were 239 therapists and 40 supervisors from 25 publicly-funded CMHCs providing outpatient mental health services for young people. Confirmatory factor analysis was used to investigate the latent trait structure of the items. Internal consistency, interrater agreement, concordance between therapists and supervisors, and convergent validity were also examined. A two-factor model measuring perceptions of financial health and strategic financial climate best fit the data. For both of these scales, alpha reliability was acceptable and agreement statistics provided moderate support for aggregation at the organizational level. Analyses supported the convergent validity of the scales. The development and preliminary evaluation of the AFSS is an important first step in understanding the financial context of publicly-funded CMHCs. Though findings from this investigation are promising, additional development and testing are needed to develop a more thorough understanding of the constructs and to improve the validity and reliability of this measure.

PMID:33740163 | DOI:10.1007/s10488-021-01128-4