Hydrophobic substrate binding pocket remodeling of echinocandin B deacylase based on multi-dimensional rational design.

Actinoplanes utahensis deacylase (AAC)-catalyzed deacylation of echinocandin B (ECB) is a promising method for the synthesis of anidulafungin, the newest of the echinocandin antifungal agents. However, the low activity of AAC significantly limits its practical application. In this work, we have devised a multi-dimensional rational design strategy for AAC, conducting separate analyses on the substrate-binding pocket's volume, curvature, and length.

Properties and biotechnological applications of microbial deacetylase.

Deacetylases, a class of enzymes that can catalyze the hydrolysis of acetylated substrates to remove the acetyl group, used in producing various products with high qualities, are one of the most influential industrial enzymes. These enzymes are highly specific, non-toxic, sustainable, and eco-friendly biocatalysts. Deacetylases and deacetylated compounds have been widely applicated in pharmaceuticals, medicine, food, and the environment.

Chemical behaviors and toxic effects of ametryn during the UV/chlorine process.

Ametryn (AMT), one of the most widely used herbicides in agriculture, has been frequently detected as a micropollutant in many aquatic environments. AMT residue not only pollutes water but also acts as a precursor for the production of disinfection by-products (DBPs). This study systematically investigated the fate of AMT during the UV/chlorine process.

Occurrence of microcystin-LR in vegetated lagoons used for urban runoff management.

Phytoremediation with aquatic macrophyte has been considered as an eco-friendly technique for controlling harmful cyanobacteria outbreak and proven to be effective. The conventional water quality parameters are frequently measured to evaluate the effectiveness of phytoremediation. However, the concentration of microcystin-leucine-arginine (MC-LR) in different vegetated water still remains uncertain.

[Comparative study on effects of blood enriching on mouse model of blood deficiency syndrome induced by cyclophosphamide of albiflorin, paeoniflorin on levels of GM-CSF, IL-3 and TNF-α].

Objective: To compare the effects and mechanism of blood enriching on mouse model of blood deficiency syndrome induced by cyclophosphamide of albiflorin and paeoniflorin.

Method: Albiflorin and paeoniflorin were determined by using animal models of blood deficiency syndrome induced by cyclophosphamide. The amount of WBC, RBC, HGB, index of thymus gland and spleen, and the changes of GM-CSF, IL-3 and TNF-α in serum were detected after the treatment.

[Study on blood enriching effects of γ-ray radiation of paeoniflorin and albiflorin on mouse model of blood deficiency].

Objective: To study the blood enriching effects of Paeoniae Radix Rubra and Paeoniae Radix Alba, paeoniflorin and albiflorin on mouse model of blood deficiency caused by γ-ray radiation.

Method: Build mouse model of blood deficiency induced by γ-ray radiation. Paeoniae Radix Rubra and Paeoniae Radix Alba were given during modeling.

[Varieties, functions and clinical applications of Chishao and Baishao: a literature review].

According to Chinese Pharmacopoeia (2010ed), Chishao,Paeoniae Radix Rubra and Baishao,Paeoniae Radix Alba are both from the root of Paeonia lactiflora Pall. In recent years, it is known from the studies that Chishao and Baishao must have the resemblance in the chemical composition, but the differences have related to the ecological environment and the processing methods, this makes their functions be different, athough they derive from the same original plants. This review explores the material basis and functions differences based on the analysis of the relationship in Chishao and Baishao on characteristic index function and the genetic background and the analysis of the clinical and pharmacological effects.

[Comparative study on effects of blood enriching on mouse model of blood deficiency syndrome induced by compound method of bleeding, starved feeding and exhausting of Paeoniae Radix Alba and Paeoniae Radix Rubra, paeoniflorin and albiflorin].

Objective: To study the effects of blood enriching on mouse model of blood deficiency syndrome of Paeoniae Radix Alba and Paeoniae Radix Rubra, paeoniflorin and albiflorin.

Method: Building the mouse model of blood deficiency syndrome induced by compound method of bleeding, starved feeding and exhausting of swimming, extract from Paeoniae Radix Alba and Paeoniae Radix Rubra were given during modeling. The amount of RBC, HGB were detected after the treatment.

Ex vivo expansion of CD34+ and T and NK cells from umbilical cord blood for leukemic BALB/C nude mouse transplantation.

CBSCT with low incidence of GVHD is associated with higher rates of delayed engraftment and relapse compared with other stem cells transplants. The immune-mediated effect of NK and cytotoxic T cells against residual tumor cells was shown to prevent relapse and reinduce remission after bone marrow transplantation. We expanded CD34+ and T and NK cells ex vivo in cord blood with different cytokines combination and transplanted into leukemic BALB/C nude mouse.

Recurrent laryngeal nerve palsy after thyroidectomy with routine identification of the recurrent laryngeal nerve.

Background: The aim of this study was to assess the risk of recurrent laryngeal nerve palsy (RLNP) after thyroidectomy with routine identification of the recurrent laryngeal nerve (RLN) during the operation.

Methods: The present study was confined to 521 patients, 348 total lobectomies and 178 total thyroidectomies, treated by the same surgeon. Temporary and permanent RLNP rates were analyzed for patient groups with stratification of primary operation for benign thyroid disease, thyroid cancer, Graves' disease, and reoperation.

Risk of vocal palsy after thyroidecitomy with identification of the recurrent laryngeal nerve.

The purpose of this study was to assess the risk of vocal palsy after thyroidectomy with identification of recurrent laryngeal nerve (RLN) during surgery. In all, 521 patients treated by the same surgeon were enrolled in this study. Temporary and permanent vocal palsy rates were analyzed for patient groups classified according to surgery for primary benign thyroid disease, thyroid cancer, Graves' disease, and reoperation.

Ancient schwannoma of the infratemporal fossa.

This article describes a case of ancient schwannoma of the infratemporal fossa. Ancient schwannoma is a rare variant of the neurilemmoma, which clinical findings and radiographic features suggest is a slow-growing, benign tumour. Histopathologic features such as hypercellularity with nuclear atypia can make accurate diagnosis of this tumour difficult.