bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exoticism, Exchange, and Early Indigenous-Colonial Relations in the 15th to 16th Century Caribbean
Authors: Dua Akshay 
Published: February 2022

The initial interactions between Indigenous groups and European colonists across the Caribbean were largely shaped by pre-existingsociocultural conditions. The central importance of exchange for social construction and the concomitantly high value placed upon foreign material was common to many Native societies. This played in contrast to European understandings of exchange, which was far more focused on economic gain and competitive bargaining. The role assigned to exchange and the foreign in Indigenous and European societies guided their perceptions of each other and respective goals in interaction. Native systems were well entrenched throughout the regional networks of trade and culture in the Caribbean, and so colonists entered into a world fundamentally defined by such systems. European imperial views permitted them to exploit these systems, twist- ing Indigenous exaltation of intercultural trade into a tool for attempted oppres- sion, subversion, and assimilation. Nevertheless, colonists were unable to under- mine core structures, even if they appropriated them for the creation of new hierar- chies and dehumanization of Natives. These structures prevailed even as coloniza- tion grew more pervasive and degenerative.
Regression Analysis in Development of Method for Isolation and Quantitative Determination of Water-soluble Polysaccharides from Sunflower Roots of One-year-old
Authors: Dyakova N. A. 
Published: February 2022

Introduction. The roots of one-year-old sunflower (Helianthus annuus L.) are mainly wastes of agricultural enterprises when cultivating this crop. At the same time, they differ in a rich chemical composition and contain water-soluble polysaccharides, the base of which is inulin.Aim. The aim of this study is to select optimal parameters of ultrasonic extraction of water-soluble polysaccharides from sunflower roots of oneyear old based on regression analysis.Materials and methods. For the experiment, raw materials purchased from one of the pharmacies in the city of Voronezh were used. A sample of raw materials (1.0 grams) was placed in an ultrasonic bath Grad 40-35, which allows maintaining the necessary temperature and frequency of ultrasound with a given duration of time. Then, 10 (15 or 20) ml of purified water purified from impurities at a temperature of 60 °C to 80 °C was measured with a measuring flask and extracted from 10 to 20 minutes with a multiplicity of 1 to 3, and after each of the multiple studies, the same raw material was further filtered with a new solvent.Results and discussion. The initial conditions and the data obtained during the experiments made it possible to present the regression model in the form of a linear multiple regression equation, which can be used with sufficient accuracy in prediction and analysis. The adequacy of the model was confirmed by testing hypotheses against Pearson's χ2 criterion. The correlation coefficient derived from the values of the regression coefficient and the mean square deviation was used in determining the tightness of the overall relationship between the source and the obtained data. In addition, a detailed study of a sample of those variables whose priority was not clearly expressed was carried out by processing when fixing their values.Conclusion. The most important conditions for extraction of the roots of sunflower of a one-year old should be considered: extraction temperature equal to 80 °C; extraction multiplicity equal to 3; an ultrasound frequency of 35 kHz; Note here that raw material grinding can vary from 0.5 mm to 2 mm, extraction time can range from 15 min to 20 min, ratio of raw material and extractant can vary from 1 g per 10 ml to 1 g per 15 ml.
Pharmacokinetics Study of the Long-acting Antiarrhythmic Drug of Lappaconitine Hydrobromide (Allaforte®, JSC "Pharmcenter VILAR", Russia)
Authors: Archakova O. A. , Bagaeva N. S. , Komarov T. N. , Rogov A. V. , Shchelgacheva D. S. , Suvorova A. V. , Karnakova P. K. , Karpova P. A. , Shohin I. E. 
Published: February 2022

Introduction.Allaforte® (JSC "Pharmcenter VILAR", Russia) is an antiarrhythmic long-acting drug. The dosage form of the drug Allaforte® provides a decrease in the frequency of taking the drug and also reduces the risk of side effects. It is relevant when taking antiarrhythmic drugs of the IC class. However, the pharmacokinetics of this drug has not been studied on humans. Therefore, it is important to fully study the pharmacokinetics to ensure the maximum efficacy and safety of arrhythmia therapy.Aim.The aim is pharmacokinetics study of long-acting antiarrhythmic drug Allaforte® (JSC "Pharmcenter VILAR", Russia), 25 mg. Materials and methods. Concentration of lappaconitine and its active metabolite N-desacetyllappaconitine in human plasma determinates by high performance liquid chromatography with tandem mass-spectrometry. Pharmacokinetic parameters calculated by R Project 3.5.1 software (package «bear», version 2.8.3-2), originally created by Hsin-ya Lee and Yung-jin Lee, Taiwan.Results and discussion.Pharmacokinetic parameters of lappaconitine and N-desacetyllappaconitine were calculated. Averaged pharmacokinetic profiles (in linear and semi-log scale) of lappaconitine and N-desacetyllappaconitine after single administration under fasting were built. The means of the maximum concentrations (Cmax) determined in the blood plasma of volunteers after single administration Allaforte® are 5.09 ± 4.07 ng/ml for lappaconitine and 11.66 ± 6.21 ng/ml for N-deacetyllappaconitine (Mean ± SD). The peak time of the maximum concentrations (Tmax) is 4.43 ± 3.54 hours for lappaconitine and 4.04 ± 2.18 hours for N-deacetyllappaconitine. The means of the areas under the curve plasma concentration – time from 0 to 48 hours (AUC0-t) and under the curve plasma concentration–time from zero to infinity (AUC0-∞) of Allaforte® is 42.96 ± 34.48 ng ∙ h/ml and 71.24 ± 43.20 ng ∙ h/ml for lappaconitine; 167.42 ± 114.41 ng ∙ h/ml and 189.42 ± 115.20 ng ∙ h/ml for N-deacetyllappaconitine. Allaforte® was eliminated from blood plasma with means of terminal half-life (T1/2) 8.45 ± 5.10 hours for lappaconitine and 9.04 ± 2.57 hours for N-deacetyllappaconitine.Conclusion.Pharmacokinetics study of long-acting antiarrhythmic drug Allaforte® (JSC "Pharmcenter VILAR", Russia) after single administration was researched. Results of the study allows to conduct an effective therapy of arrhythmia by study drug and minimize side effects.
Organization of Hygienic Monitoring of Working Area Air Pollution by Particulates in Pharmaceutical Industries (Review)
Authors: Pozharnov I. A. , Simakov A. S. , Shatilina A. A. , Ramenskaya G. V. 
Published: February 2022

Introduction.The use of highly active substances of various origins in the pharmaceutical industry exposes employees working directly with active pharmaceutical substances (APS) in manufacturing facilities to risks. Although pharmaceutical companies follow occupational safety requirements, such as the use of personal protective equipment (PPE), the manipulation of highly toxic substances in specially dedicated indoor facilities, etc., the impact of risk factors on the health of workers must be regularly assessed and monitored. Therefore, hygienic monitoring of working area air is obligatory in activity of pharmaceutical enterprises. A range of normative documents (orders, State standards, methodological guidelines, manuals) are currently in force in the Russian Federation defining uniform requirements for the organization and monitoring of working area air pollution by particulates. At the same time, the development of appropriate adjusted methodologies for determining the content of a specific substance in working area air is a mandatory requirement for all manufacturing enterprise by legislation.Text.The article provides a review of the Russian regulatory framework and relevant literature sources relating to the order of organization and performance of hygienic monitoring of working area air, including foreign ones. On the basis of a comparative analysis of the aforementioned literature completed in order to reveal common provisions, the comprehensive methodology for the monitoring of the content of harmful substances in the working area air at pharmaceutical enterprises is described.Conclusion.As a result of a comparative analysis of the literature reviewed, a detailed comprehensive methodology for the monitoring of the content of harmful substances in the working area air is presented, including a description of the equipment and materials required for sampling, sampling strategies, recommendations for monitoring protocols, procedures for storage and transport of samples, and procedure for sample analysis. This article may serve as a possible reference for pharmaceutical enterprises to develop individual methodologies for determining the concentration of a specific substances in working area air.
Human Mesenchymal Stem Cells as a Carrier for a Cell-Mediated Drug Delivery
Authors: Litvinova L. S. , Shupletsova V. V. , Khaziakhmatova O. G. , Daminova A. G. , Kudryavtseva V. L. , Yurova K. A. , Malashchenko V. V. , Todosenko N. M. , Popova V. , Litvinov R. I. , Korotkova E. I. , Sukhorukov G. B. , Gow A. J. , Weissman D. , Atochina-Vasserman E. N. , Khlusov I. A. 
Published: February 2022

A number of preclinical and clinical studies have demonstrated the efficiency of mesenchymal stromal cells to serve as an excellent base for a cell-mediated drug delivery system. Cell-based targeted drug delivery has received much attention as a system to facilitate the uptake a nd transfer of active substances to specific organs and tissues with high efficiency. Human mesenchymal stem cells (MSCs) are attracting increased interest as a promising tool for cell-based therapy due to their high proliferative capacity, multi-potency, and anti-inflammatory and immunomodulatory properties. In particular, these cells are potentially suitable for use as encapsulated drug transporters to sites of inflammation. Here, we studied the in vitro effects of incorporating synthetic polymer microcapsules at various microcapsule-to-cell ratios on the morphology, ultrastructure, cytokine profile, and migration ability of human adipose-derived MSCs at various time points post-phagocytosis. The data show that under appropriate conditions, human MSCs can be efficiently loaded with synthesized microcapsules without damaging the cell’s structural integrity with unexpressed cytokine secretion, retained motility, and ability to migrate through 8 μm pores. Thus, the strategy of using human MSCs as a delivery vehicle for transferring microcapsules, containing bioactive material, across the tissue–blood or tumor–blood barriers to facilitate the treatment of stroke, cancer, or inflammatory diseases may open a new therapeutic perspective.
Evaluation of Osteogenic Differentiation of Bone Marrow-Derived Mesenchymal Stem Cell on Highly Porous Polycaprolactone Scaffold Reinforced With Layered Double Hydroxides Nanoclay
Authors: Enderami Seyedeh Elnaz , Shafiei Seyedeh Sara , Shamsara Mehdi , Enderami Seyed Ehsan , Rostamian Tabari Abolfazl 
Published: February 2022

In recent decades, bone tissue engineering has had an effective role in introducing orthopedic implants. In this regard, polymeric scaffolds reinforced with bioactive nanomaterials can offer great potential in tissue engineering implants for replacing bone loss in patients. In this study, the thermally induced phase separation method was used to fabricate three-dimensional highly porous scaffolds made of layered double hydroxide (LDH)/polycaprolactone (PCL) nanocomposites with varied LDH contents ranging from 0.1 wt.% to 10 wt.%. The Phase identification, morphology, and elemental composition were studied using X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy, respectively. Interconnected pores ranging from 5 to 150 µm were detected in all samples. The results revealed that the inclusion of LDH to PCL scaffold reinforced mechanical strength and compressive modulus increased from 0.6418 to 1.3251 for the pure PCL and PCL + LDH (1 Wt.%) scaffolds, respectively. Also, thermal stability, degradation rate, and biomineralization especially in comparison with the pure PCL were enhanced. Adhesion, viability, and proliferation of human bone marrow-derived mesenchymal stem cells (hBMSCs) seeded on PCL + LDH scaffolds were improved as compared to the pure PCL. Furthermore, the addition of LDH resulted in the increased mineral deposition as well as expression of ALP and RUNX2 osteogenic genes in terms of differentiation. All in all, our findings revealed that PCL + LDH (1 Wt.%) scaffold might be an ideal choice for 3D scaffold design in bone tissue engineering approaches.
Increased Frequency of Diabetic Ketoacidosis: The Link With COVID-19 Pandemic
Authors: d’Annunzio Giuseppe , Bassi Marta , De Rose Elena Lucia , Lezzi Marilea , Minuto Nicola , Calevo Maria Grazia , Gaiero Alberto , Fichera Graziella , Borea Riccardo , Maghnie Mohamad 
Published: February 2022

AimsDiabetic ketoacidosis is the most severe metabolic derangement due to prolonged insulin deficiency as in type 1 diabetes. Diabetic ketoacidosis, a life-threatening condition, is often diagnosed late. A timely diagnosis is mandatory to prevent its consequences, mainly neurological. The COVID-19 pandemic and lockdown have reduced the availability of medical care and access to hospitals. The aim of our retrospective study was to compare the frequency of ketoacidosis at the diagnosis of type 1 diabetes between the lockdown-post lockdown period and the previous two calendar years, in order to evaluate the impact of the COVID-19 pandemic.Patients and MethodsWe retrospectively assessed the clinical and metabolic data at the diagnosis of type 1 diabetes in children in the Liguria Region during 3 different time periods: calendar year 2018 (Period A), calendar year 2019 until February 23,2020 (Period B) and from February 24, 2020 onwards to March 31, 2021 (Period C).ResultsWe analyzed 99 patients with newly-diagnosed T1DM from 01/01/2018 to 31/03/2021. Briefly, a younger age at diagnosis of T1DM was observed in Period 2 compared to Period 1 (p = 0.03). The frequency of DKA at clinical onset of T1DM was similar in Period A (32.3%) and Period B (37.5%), while it significantly increased in Period C (61.1%) compared to Period B (37.5%) (p = 0.03). PH values were similar in Period A (7.29 ± 0.14) and Period B (7.27 ± 0.17), while they were significantly lower in Period C (7.21 ± 0.17) compared to Period B (p = 0.04).ConclusionsAn increase in the frequency of diabetic ketoacidosis has been documented in newly diagnosed pediatric patients in the Liguria Region during and after the lockdown period compared to previous calendar years. This increase could have been caused by the delay in diagnosis following the restrictions imposed by the lockdown with consequently reduced access to health care facilities. More information on the risks of ketoacidosis is desirable by means of social and medical awareness campaigns.
English from Scratch: Preadolescents’ Developing Use of English Lexical Resources in Belgian Dutch
Authors: Schuring Melissa , Zenner Eline 
Published: February 2022

Working within the framework of the socio-pragmatic turn in anglicism research, this paper adds a developmental sociolinguistic perspective in investigating preadolescents’ use of English lexical resources in Belgian Dutch. The so far largely undocumented role of English in the linguistic transition from childhood to adolescence is analyzed through a fieldwork corpus of 15,465 utterances, collected during sociolinguistic interviews with 26 (12 boys, 14 girls) Belgian Dutch preadolescent (6–13 years/o) respondents from a local hockey club. All English lexical material in the corpus was identified and categorized following a three-step identification protocol. This protocol introduces a distinction between recognizable unavoidable English (RUE) and recognizable avoidable English (RAE). Results reveal that, overall, 9.7% of the utterances contain recognizable English (RUE + RAE), with RUE being significantly more frequent than RAE. Our findings further indicate only limited stratification according to traditional socio-demographic parameters and display a number of outliers in the respondent profiles. Closer inspection of these outliers allows the conclusion that in the community of practice studied, English is an emerging youth language marker, typically used when talking about gaming or girl-oriented activities. In sum, we conclude that preadolescents in our sample instrumentalize English for incipient identity work, both on the micro-level (being a gamer, a soon-to-be teenage girl) as on the macro-level (through ingroup and outgroup marking).
The Hypertension Paradox: Survival Benefit After ST-Elevation Myocardial Infarction in Patients With History of Hypertension. A Prospective Cohort- and Risk-Analysis
Authors: Hoffmann Fabian , Fassbender Patricia , Zander Wilhelm , Ulbrich Lisa , Kuhr Kathrin , Adler Christoph , Halbach Marcel , Reuter Hannes 
Published: February 2022

BackgroundMortality after ST-elevation myocardial infarction (STEMI) is dependent from best-medical treatment after initial event.ObjectivesDetermining the impact of prescription of guideline-recommended therapy after STEMI in two cohorts, patients with and without history of arterial hypertension, on survival.Methods1,025 patients of the Cologne Infarction Model registry with invasively adjudicated STEMI were dichotomized according to their history of arterial hypertension. We recorded prescription rates and dosing of RAS-inhibitors, β-blockers and statins in all patients. The primary outcome was all-cause death. Mean follow-up was 2.5 years.ResultsMean age was 64 ± 13 years, 246 (25%) were women. 749 (76%) patients had a history of hypertension. All-cause mortality was 24.2%, 30-day and 1-year mortality was 11.3% and 16.6%, respectively. History of hypertension correlated with lower mortality (hazard ratio [HR], @30 days: 0.41 [0.27-0.62], @1 year: 0.37 [0.26-0.53]). After adjusting for age, sex, Killip-class, diabetes mellitus, body-mass index, kidney function and statin prescription at discharge 1-year mortality HR was 0.24 (0.12-0.48). At discharge, prescription rates for RAS-inhibitors, β-blockers and statins, as well as individual dosing and long-term persistence of RAS-inhibitors were higher in patients with history of hypertension. On the same lines, prescription rates for RAS-inhibitors, β-blockers and statins at discharge correlated significantly with lower mortality regardless of history of hypertension.ConclusionPatients with history of hypertension show higher penetration of guideline recommended drug therapy after STEMI, which may contribute to better survival. Better tolerance of β-blockers and RAS-inhibitors in patients with history of hypertension, not hypertension itself, likely explains these differences in prescription and dosing.
Association of Nighttime Systolic Blood Pressure With Left Atrial-Left Ventricular–Arterial Coupling in Hypertension
Authors: Sun Qiaobing , Pan Yu , Zhao Yixiao , Liu Yan , Jiang Yinong 
Published: February 2022

ObjectiveHypertension (HT) induces left atrial (LA) and left ventricular (LV) dysfunction, and an increase in arterial stiffness. In this study, we investigated the association between LA-LV–arterial coupling and nighttime systolic blood pressure (BP) as well as BP circadian rhythm in essential hypertension.MethodsWe enrolled 290 HT patients. All subjects were evaluated by 2- dimensional speckle tracking echocardiography (2DSTE), ambulatory 24 h BP monitoring (ABPM), and brachial–ankle pulse wave velocity (PWV). According to BP patterns, these patients were divided into two groups, which included dippers (n = 111), patients with a &gt;10% reduction in BP at nighttime; non-dippers (n = 179), patients with a &lt;10% reduction in BP at nighttime. 2D-STE based LA and LV strains were studied and the following parameters were measured, LV global longitudinal strain (GLS), LA reservoir strain (LAS−S), LA conduit strain (LAS−E), and LA booster pump strain (LAS−A). LA stiffness index (LASI) defined as the ratio of E/e′ to LAS−S, and PWV-to-GLS ratio (PWV/GLS) were calculated to reflect LA-LV–arterial coupling. Furthermore, we also explored the correlation between LASI (or PWV/GLS) and ambulatory blood pressure indexes.ResultsLeft atrial stiffness index was significantly higher in non-dippers [0.29 (0.21, 0.41)] than in dippers [0.26 (0.21, 0.33)] (P &lt; 0.05). PWV/GLS was significantly higher in non-dippers [−80.9 (−69.3, −101.5)] than in dippers [−74.2 (−60.2, −90.6)] (P &lt; 0.05). LAS−S, LAS−E, LAS−A,and LV GLS were significantly lower in non-dippers than in dippers (P &lt; 0.05). Multivariate linear regression analysis revealed that nighttime systolic BP was independently correlated with LASI and PWV/GLS, even adjusted for multiple clinical risk factors, LVMI, and LVEF.ConclusionsThe dipping pattern of BP was related to the abnormalities of myocardial mechanics and LA-LV–arterial coupling. However, absolute nocturnal systolic BP value maybe more important than BP circadian profile in the progression of abnormal LA-LV–arterial coupling.
Statin Use in COVID-19 Hospitalized Patients and Outcomes: A Retrospective Study
Authors: Kouhpeikar Hamideh , Khosaravizade Tabasi Hamidreza , Khazir Zahra , Naghipour Armin , Mohammadi Moghadam Hussein , Forouzanfar Hasan , Abbasifard Mitra , Kirichenko Tatiana V. , Reiner Željko , Banach Maciej , Sahebkar Amirhossein 
Published: February 2022

BackgroundCoronavirus disease 2019 (COVID-19) might affect everyone, but people with comorbidities such as hypertension and cardiovascular disease (CVD) may often have more severe complications and worse outcomes. Although vaccinations are being performed worldwide, it will take a long time until the entire population of the world is vaccinated. On the other hand, we are witnessing the emergence of new variants of this virus. Therefore, effective therapeutic approaches still need to be considered. Statins are well-known lipid-lowering drugs, but they have also anti-inflammatory and immunomodulatory effects. This study aimed to investigate the effects of statins on the survival of COVID-19 hospitalized patients.MethodsThis retrospective study was performed on 583 patients admitted to a highly referenced hospital in Tabas, Iran, between February 2020 and December 2020. One hundred sixty-two patients were treated with statins and 421 patients were not. Demographic information, clinical signs, and the results of laboratory, and comorbidities were extracted from patients' medical records and mortality and survival rates were assessed in these two groups.ResultsThe results of the Cox crude regression model showed that statins reduced mortality in COVID-19 patients (HR = 0.56, 95% CI: 0.32, 0.97; p = 0.040), although this reduction was not significant in the adjusted model (HRs=0.51, 95%CI: 0.22, 1.17; p = 0.114). Using a composite outcome comprising intubation, ICU admission, and mortality, both crude (HR = 0.43; 95% CI: 0.26, 0.73; p = 0.002) and adjusted (HR = 0.57; 95% CI: 0.33, 0.99; p = 0.048) models suggested a significant protective effect of statin therapy.ConclusionDue to anti-inflammatory properties of statins, these drugs can be effective as an adjunct therapy in the treatment of COVID-19 patients.