Synergistic release of Cd(II) and As(V) from ternary sorption systems containing ferrihydrite nanoparticles: The role of binary and ternary surface complexes.

Cadmium (Cd) and arsenic (As) generally exhibit mutually beneficial co-sorption behavior on iron oxyhydroxides through multiple mechanisms, including surface precipitation, ternary surface complexes, and electrostatic interactions. However, the numerous factors that control the immobilization of Cd and As in turn complicated the processes and mechanisms involved in their co-desorption from iron minerals, which hindered the full understanding of their geochemical behaviors. Here, the simultaneous release of Cd(II) and As(V) from newly precipitated ferrihydrite nanoparticles by either Ca or P was investigated through kinetics and isothermal desorption experiments.

The role of organic and inorganic substituents of roxarsone determines its binding behavior and mechanisms onto nano-ferrihydrite colloidal particles.

The retention and fate of Roxarsone (ROX) onto typical reactive soil minerals were crucial for evaluating its potential environmental risk. However, the behavior and molecular-level reaction mechanism of ROX and its substituents with iron (hydr)oxides remains unclear. Herein, the binding behavior of ROX on ferrihydrite (Fh) was investigated through batch experiments and in-situ ATR-FTIR techniques.

Insight into the reactions of antimonite with manganese oxides: Synergistic effects of Mn(III) and oxygen vacancies.

Manganese oxides (MnO) are critical for determining the environmental behaviors and fate of antimonite (Sb(III)). However, little is known about the qualitative/quantitative connection between MnO structures and Sb(III) fate. Herein, the reactions of Sb(III) and six MnO with different structures were systematically investigated.

Nano-ferrihydrite colloidal particles mediated interfacial interactions of arsenate and cadmium: Implications for their fate under iron-rich geological settings.

Arsenic (As) and cadmium (Cd) often coexist in paddy soils. Nano-ferrihydrite colloidal particles (NFPs) are ubiquitous at redox active interfaces of the paddy system and are well-known to play a critical role in controlling the solubility and bio-availability of As and Cd. However, the mutual interaction between As and Cd on NFPs remains elusive.

Efficient removal of pefloxacin from aqueous solution by acid-alkali modified sludge-based biochar: adsorption kinetics, isotherm, thermodynamics, and mechanism.

In this paper, one kind of acid-alkali modified sludge-based biochar (ASBC) was synthesized, characterized, and employed as adsorbent for the removal of pefloxacin. The characterization results showed that the specific surface area (SSA) of ASBC (53.381 m/g) was significantly higher than that of SBC (24.

Simultaneous removal of iron and manganese from acid mine drainage by acclimated bacteria.

A bacterial consortium for efficient decontamination of high-concentration Fe-Mn acid mine drainage (AMD) was successfully isolated. The removal efficiencies of Fe and Mn were effective, reaching 99.8 % and 98.

Simultaneous adsorption and oxidation of antimonite onto nano zero-valent iron sludge-based biochar: Indispensable role of reactive oxygen species and redox-active moieties.

The nano zero-valent iron sludge-based biochar (nZVI-SBC) was prepared in this study to eliminate Sb(III) from aqueous solutions, which was characterized by BET, SEM, XRD, TEM, FTIR, XPS. Our results proved that the incorporated nZVI on SBC matrix could significantly enhance eliminating Sb(III), and the max-adsorption capacity (160.40 mg g) can be achieved at pH = 4.

Mechanistic insights into the enhanced removal of roxsarsone and its metabolites by a sludge-based, biochar supported zerovalent iron nanocomposite: Adsorption and redox transformation.

Roxarsone is a phenyl-substituted arsonic acid comprising both arsenate and benzene rings. Few adsorbents are designed for the effective capture of both the organic and inorganic moieties of ROX molecules. Herein, nano zerovalent iron (nZVI) particles were incorporated on the surface of sludge-based biochar (SBC) to fabricate a dual-affinity sorbent that attracts both the arsenate and benzene rings of ROX.

Elevated expression of interleukin-33 in myasthenia gravis patients.

Myasthenia gravis (MG) is an archetypal autoimmune disorder of the neuromuscular junction. The imbalance of inflammatory cytokines are involved in the pathogenesis of MG. IL-33, a member of the IL-1 family, plays a key immune-modulation role in several autoimmune disease.

Mitigating arsenic accumulation in rice (Oryza sativa L.) from typical arsenic contaminated paddy soil of southern China using nanostructured α-MnO: Pot experiment and field application.

Manganese oxides are naturally occurring powerful oxidants and scavengers, which can control the mobility and bioavailability of arsenic (As). However, the effect of synthetic nanostructured manganese oxides on the mobilization and transportation of As at actual paddy soils are poorly understood, especially in soils with low or medium background Mn concentration. In the present study, a novel nano manganese oxide with superior reactivity and surface area has been synthesized.

Biochar-based functional materials in the purification of agricultural wastewater: Fabrication, application and future research needs.

Nowadays, agricultural contamination is becoming more and more serious due to the rapid growth of agricultural industry, which discharged antibiotics, pesticides or toxic metals into farmlands. A large number of researchers have applied biochar-based functional materials to the treatment of agricultural wastewater contamination. Meanwhile, biochar has also proved to be a very promising and effective technology in water purification field due to its various beneficial properties (e.

Enhanced flocculation and sedimentation of trace cadmium from irrigation water using phosphoric fertilizer.

Suspended substrate (SS) in natural waters controls the interaction, transportation, and biological effects of heavy metals in water bodies. The large amount of cadmium (Cd) carried by SS is an important source of Cd pollution in irrigation water. In this study, a novel procedure to remove trace Cd coexisting with SS from irrigation water by fertilizer flocculation was investigated.

Long-term efficacy and side effects of low-dose tacrolimus for the treatment of Myasthenia Gravis.

The study evaluated the efficacy of low-dose tacrolimus for treating Myasthenia Gravis (MG). Data were collected from 97 patients treated with low-dose tacrolimus from February 2011 to April 2015. Metabolic analysis was performed to determine more accurate tacrolimus dosing and patients were followed-up within clinic every 6 months for up to 4 years.

Aberrant decrease of microRNA19b regulates TSLP expression and contributes to Th17 cells development in myasthenia gravis related thymomas.

Myasthenia gravis (MG) is an organ-specific autoimmune disease. The imbalance of T helper type 17 cells (Th17) plays a key role in the pathogenesis of thymomatous MG. But the regulatory mechanism for Th17 cell development in MG-related thymoma remains undefined.

[The clinical outcomes of thymectomy combined with radiotherapy or cyclophosphamide treatment for myasthenia gravis patients with thymoma].

Objective: To evaluate the therapeutic effects of thymectomy in myasthenia gravis (MG) patients with thymoma.

Methods: A total of 178 MG patients with thymectomy between July 2008 and December 2010 were included. All the subjects were received either cyclophosphamide alone or in combination with radiotherapeutic treatment after surgery.

[The clinical efficacy and safety of tacrolimus in patients with myasthenia gravis].

Objective: To evaluate the efficacy and safety of tacrolimus in patients with generalized myasthenia gravis (MG).

Methods: A total of 69 cases admitted to our hospital were given 2-6 mg/day tacrolimus (FK506) for 12 months. The MG absolute and relative clinical scores were used to monitor the efficacy of tacrolimus.

A cohort study on myasthenia gravis patients in China.

Clinical classification and age distribution in myasthenia gravis (MG) cases seem different between Oriental and Caucasian populations, but there have rarely been any clinical studies on MG patients from mainland China. The goal of the current study was to perform a comprehensive survey of myasthenia gravis in a hospital in China, establishing contemporary cohort data and clinical features. 1,108 unselected patients with MG attending the 309th Hospital of PLA, Beijing, China were studied during a 36-month period from July 2008 to June 2011.

[The clinical characteristics of patients with thymoma-associated myasthenia gravis].

Objective: To investigation the clinical characteristics in myasthenia gravis (MG) patients with thymomas.

Methods: A total of 856 MG patients admitted to the department during 2008.7 - 2010.

[Thymoma T helper type 17 cells and related cytokines in myasthenia gravis].

Objective: To investigate the immunoregulatory role of Th17 cell and the related cytokines in myasthenia gravis.

Methods: Totally 51 myasthenia gravis (MG) patients were divided into MG with thymomas (TM group) and the MG with normal thymus (NT group), as well as 22 healthy subjects as controls. Th17 cells from peripheral blood mononuclear cells were measured by flow cytometry.

Effect of automatic versus fixed continuous positive airway pressure for the treatment of obstructive sleep apnea: an up-to-date meta-analysis.

Purpose: This study was made to evaluate the effect of automatic continuous positive airway pressure (auto-CPAP) versus fixed continuous positive airway pressure (fixed CPAP) in reducing the apnea-hypopnea index (AHI) and the mean therapy pressure, improving subjective sleepiness, sleep architecture, patient compliance, and preference in patients with obstructive sleep apnea.

Methods: We searched the electronic databases MEDLINE, EMBASE, the Cochrane Library, and Google Scholar. Randomized controlled trials comparing auto-CPAP with fixed CPAP were reviewed.

Three cases of myasthenia gravis from one family with variations in clinical features and serum antibodies.

Myasthenia gravis, an autoimmune disorder affecting neuromuscular transmission, is mainly sporadic while familial cases are very rare. Usually familial myasthenia gravis cases have uniform clinical symptoms as well as serum anti-acetylcholine receptor antibodies. Interestingly, in our cases varying clinical types of myasthenia gravis and seropositive/seronegative anti-acetylcholine receptor antibodies coexisted in the same family.

[The clinical characteristics of early-onset versus late-onset types of myasthenia gravis].

Objective: To compare the clinical characteristics of early-onset and late-onset myasthenia gravis (MG).

Methods: A total of 819 MG patients admitted in our department during the same period were reviewed retrospectively. The patients with MG were divided into two groups by the age of onset, which were the early-onset MG (< 49 years) and late-onset MG (≥ 50 years).

[Clinical value of low-frequency repetitive nerve stimulation in myasthenia gravis].

Objective: To explore the value of low-frequency repetitive nerve stimulation (RNS) in the diagnosis of myasthenia gravis (MG).

Methods: A total of 436 MG patients admitted during the period of July 2008 and August 2010 and undergoing the repetitive nerve stimulation test were reviewed retrospectively. We analyzed the positive rates of RNS in MG patients and compared the abnormalities in different nerves including facial, accessory, axillary and ulnar nerves.

[The clinical features of myasthenia gravis associated with thyroid abnormalities].

Objective: To analyze the clinical characteristics of myasthenia gravis (MG) associated with thyroid abnormalities.

Methods: A total of 300 MG patients admitted to the department of neurology from July 2008 to September 2009 were reviewed retrospectively. Based on the thyroid function and abnormality of thyroid related antibodies (thyroglobulin antibody and peroxidase antibody), the patients with MG were divided into two groups (260 cases without thyroid disease and 40 cases with thyroid abnormalities).