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Objective: To explore the detection methods and transfusion strategies of autoantibodies with specificity against Rh blood group system to provide timely and effective transfusion treatment for those patients. Methods: A case of a patient with autoantibodies with anti-Ce specificity was studied through serological tests, including ABO and Rh blood group identification, Coombs tests, antibody identification test and acid elution test. PCR-SSP was carried out to identify the Rh phenotype. The cross-matching test should avoid the specificity of anti-Ce autoantibody. The hemoglobin was measured pre- and post- the transfusion. Results: The results of the serological tests showed the blood group of the patient was AB type, RhD positive, and Rh blood group was CcEe before transfusion Direct antiglobulin test (DAT), and indirect antiglobulin test (IAT) were positive. According to the identification of antibodies, there were autoantibodies with anti-Ce specificity in the patient’s serum. The Rh antigen phenotyping was C+, c+, E+, e+ through the gene analysis. The results of the cross-matching were negative and the blood group of the red blood cell were AB, ccDEE. The hemoglobin of the patient increased from 48 g/L to 60 g/L and 58 g/L to 88 g/L rapidly after transfusion. Conclusions: In rare cases, autoantibodies can also show the characteristics of the complete antibodies rather than the pattern which could be agglutination with all the red blood cells for antibodies identification but there were strength differences. During blood transfusion treatment for those patients, we should try to avoid the specificity of autoantibodies, and carry out cross matching test before transfusion. After the titter of the autoantibodies decreased or disappeared, homotypic red blood cells for transfusion could be carried out.

Type 2 diabetes is characterized by β and α cell dysfunction. We used phasor-FLIM (Fluorescence Lifetime Imaging Microscopy) to monitor oxidative phosphorylation and glycolysis in living islet cells before and after glucose stimulation. In healthy cells, glucose enhanced oxidative phosphorylation in β cells and suppressed oxidative phosphorylation in α cells. In Type 2 diabetes, glucose increased glycolysis in β cells, and only partially suppressed oxidative phosphorylation in α cells. FLIM uncovers key perturbations in glucose induced metabolism in living islet cells and provides a sensitive tool for drug discovery in diabetes.

Point-of-use (POU) devices with satisfactory lead (Pb2+) removal performance are urgently needed in response to recent outbreaks of lead contamination in drinking water. This study experimentally demonstrated the excellent lead removal capability of two-dimensional (2D) MoS2 nanosheets in aqueous form and as part of a layer-stacked membrane. Among all materials ever reported in the literature, MoS2 nanosheets exhibit the highest adsorption capacity (740 mg/g), and the strongest selectivity/affinity toward Pb2+ with a distribution coefficient Kd that is orders of magnitude higher than that of other lead adsorption materials (5.2 × 107 mL/g). Density functional theory (DFT) simulation was performed to complement experimental measurements and to help understand the adsorption mechanisms. The results confirmed that the cation selectivity of MoS2 follows the order Pb2+ > Cu2+ ≫ Cd2+ > Zn2+, Ni2+ > Mg2+, K+, Ca2+. The membrane formed with layer-stacked MoS2 nanosheets exhibited a high water flux (145 L/m2/h/bar), while effectively decreasing Pb2+ concentration in drinking water from a few mg/L to less than 10 μg/L. The removal capacity of the MoS2 membrane is a few orders of magnitude higher than that of other literature-reported membrane filters. Therefore, the layer-stacked MoS2 membrane has great potential for POU removal of lead from drinking water.

The cylindrical ultrasonic motor, noted for its straightforward design, ease of miniaturization, and high precision, has significant potential in fields such as optics, healthcare, and precision engineering. However, miniaturization presents challenges, including diminished output force and complications in applying preloading stress. To address the reduced output force, this study presents a dual-stator, high-thrust cylindrical linear ultrasonic motor. This innovative motor features two stators, a mover, and a mechanism for applying preloading stress. A key design element is the parallel arrangement of the two stators along a threaded output shaft, separated by elastic components. This setup enables axial preloading via the threads' engagement. Simulations were conducted to refine the stators' parameters, assess their operational modes, and evaluate their in-plane paths. A prototype was subsequently built to test its impedance characteristics and mechanical performance. Test results showed that under a 200 Vpp drive, the single-stator motor generated a maximum force of 4.3 N, while the dual-stator configuration produced 6.8 N. After applying preloading stress, the output force of the dual-stator motor increased to 9.4 N. [ABSTRACT FROM AUTHOR]

This paper reviewed the clinical data of 9 women with chickenpox at third trimester of pregnancy, and summarized related nursing measures. Pregnant women infected with Varicella should be arranged in the isolation ward, and appropriate cleaning and disinfection of contaminated items were implemented in the isolation ward. Based on the illness observation, comprehensive interventions on skin hygiene, hyperthermia, mental status and nutrition were carried out in the prenatal period. Key issues of postpartum care included prevention of postpartum complications, neonatal care, health education before discharge and home-based follow-up. A scientific and adequate nursing is effective to reduce the risk of postpartum complications and ensure the maternal and child safety. (本文回顾性分析9例妊娠晚期合并水痘孕妇的临床资料, 总结护理经验。产前应严格消毒隔离措施, 严密观察患者病情, 积极开展皮肤护理、高热护理、心理护理、饮食护理; 产后加强并发症预防和新生儿护理, 完善出院指导和居家随访。充分做好妊娠晚期合并水痘孕妇的临床护理工作, 可以有效减少母婴并发症的发生, 是确保母婴安全的重要有效措施。)

Phosphoric acid is used as a chemical activator to prepare coconut shell carbon (PCSC), and for investigating rhodamine B (RhB) adsorption performance. The optimal conditions for the preparation of PCSC (calcined temperature, phosphoric acid concentration), and the influence of adsorption conditions (concentration, pH, etc.) on RhB and the recovery performance of optimal carbon are investigated. Experimental results show that when the amount of PCSC (600 °C, 2 h) is 0.2 g, the initial RhB concentration is 10 mg/L, pH = 6, and the adsorption time is 30 min, it can have 95.84% RhB adsorption efficiency. Liquid ultraviolet spectroscopy also supports this adsorption performance. Characterization data showed that hydroxyl and ester groups, aromatic structures, and PO43− existed on the surface of PCSC, and the amount decreased with increasing calcined temperature. PCSC has a BET (N2) surface area of 408.59 m2/g and has a micropore distribution, EDS-detected P content is 3.91%. SEM showed that the PCSC formed micropores which could better adsorb RhB. The kinetic and thermodynamic analysis of the adsorption of RhB by PCSC showed that the adsorption process was in accord with quasi-secondary kinetic equations and ΔGθ was between −1.65 and −18.75 kJ/mol. The adsorption was a physical adsorption and a spontaneous endothermic reaction, and the obtained PCSC sorption isotherms were classified as Langmuir-type. The RhB adsorption mechanism on PCSC includes pore diffusion, hydrogen bonding, and π−π conjugation. The PCSC prepared by H3PO4 modification has superior adsorption and recycling performance for RhB, providing a reference for the preparation of other biomass carbon materials for the treatment of dye wastewater. [ABSTRACT FROM AUTHOR]

Type 2 diabetes (T2D) is a common metabolic disease due to insufficient insulin secretion by pancreatic β-cells in the context of insulin resistance. Islet molecular pathology reveals a role for protein misfolding in β-cell dysfunction and loss with islet amyloid derived from islet amyloid polypeptide (IAPP), a protein coexpressed and cosecreted with insulin. The most toxic form of misfolded IAPP is intracellular membrane disruptive toxic oligomers present in β-cells in T2D and in β-cells of mice transgenic for human IAPP (hIAPP). Prior work revealed a high degree of overlap of transcriptional changes in islets from T2D and prediabetic 9- to 10-wk-old mice transgenic for hIAPP with most changes being pro-survival adaptations and therefore of limited therapeutic guidance. Here, we investigated islets from hIAPP transgenic mice at an earlier age (6 wk) to screen for potential mediators of hIAPP toxicity that precede predominance of pro-survival signaling. We identified early suppression of cholesterol synthesis and trafficking along with aberrant intra-β-cell cholesterol and lipid deposits and impaired cholesterol trafficking to cell membranes. These findings align with comparable lipid deposits present in β-cells in T2D and increased vulnerability to develop T2D in individuals taking medications that suppress cholesterol synthesis. NEW & NOTEWORTHY: β-Cell failure in type 2 diabetes (T2D) is characterized by β-cell misfolded protein stress due to the formation of toxic oligomers of islet amyloid polypeptide (IAPP). Most transcriptional changes in islets in T2D are pro-survival adaptations consistent with the slow progression of β-cell loss. In the present study, investigation of the islet transcriptional signatures in a mouse model of T2D expressing human IAPP revealed decreased cholesterol synthesis and trafficking as a plausible early mediator of IAPP toxicity. [ABSTRACT FROM AUTHOR]