Optimization of metabolomics pretreatment method of cholangiocarcinoma cells based on ultrahigh performance liquid chromatography coupled with mass spectrometry.

Metabolomics intends to maximize the quantity of available metabolites for the global metabolome, which largely depends on sample pretreatment protocols. However, there are few studies that comprehensively examined the effects of extraction and reconstitution solvents on metabolome coverage of adherent mammalian cells. In this study, the human cholangiocarcinoma TFK-1 cells were chosen as a cell model, and eight extraction solvents and five reconstitution solvents were used for the pretreatment based on ultrahigh performance liquid chromatography coupled with mass spectrometry (UPLC/MS).

Efficacy of rehabilitation physiotherapy combined with brace correction in patients with mild to moderate scoliosis secondary to cerebral palsy.

Background: Scoliosis secondary to cerebral palsy is one of the common complications of cerebral palsy in children with cerebral palsy.

Objective: This study aimed to explore the efficacy of rehabilitation combined with brace correction in patients with scoliosis secondary to cerebral palsy.

Methods: A total of 52 patients with scoliosis secondary to cerebral palsy were selected from our hospital from April 2019 to April 2022 and divided into the control group and experimental group according to the statistical randomization method (n= 26 in each group).

A metabolomics approach reveals metabolic disturbance of human cholangiocarcinoma cells after parthenolide treatment.

Ethnopharmacological Relevance: Tanacetum parthenium (L.) Schultz-Bip, commonly known as feverfew, has been traditionally used to treat fever, migraines, rheumatoid arthritis, and cancer. Parthenolide (PTL), the main bioactive ingredient isolated from the shoots of feverfew, is a sesquiterpene lactone with anti-inflammatory and antitumor properties.

Case report: Systemic muscle involvement as the primary clinical manifestation of chronic active Epstein-Barr virus infection: A case-based review.

Chronic active Epstein-Barr virus infection (CAEBV) is common in Asian countries and characterized by recurrent or persistent infectious mononucleosis-like symptoms. Here, we describe a rare case of CAEBV-associated generalized myositis with extranodal NK/T-cell lymphoma, who initially presented with swelling and muscle soreness in the extremities and was diagnosed as polymyositis at the initial stage. CAEBV-associated generalized myositis is different from polymyositis and other types of myositis.

Factors influencing psychological distress and effects of stepwise psychological care on quality of life in patients undergoing chemotherapy after breast cancer surgery.

Objective: To investigate factors influencing psychological distress and the effect of stepwise psychological care on the quality of life in patients undergoing chemotherapy after breast cancer surgery.

Methods: A retrospective study was conducted on 96 patients undergoing chemotherapy after breast cancer surgery. The patients were evenly divided into a routine care group (control group) and a stepwise psychological care group (observation group) according to the care method.

A Method of Multiple Dynamic Objects Identification and Localization Based on Laser and RFID.

In an indoor environment, object identification and localization are paramount for human-object interaction. Visual or laser-based sensors can achieve the identification and localization of the object based on its appearance, but these approaches are computationally expensive and not robust against the environment with obstacles. Radio Frequency Identification (RFID) has a unique tag ID to identify the object, but it cannot accurately locate it.

13-Step Total Synthesis of Atropurpuran.

Herein, we report a concise total synthesis of atropurpuran, a unique and synthetically challenging pentacyclic diterpene that bears a tetracyclo[5.3.3.

MRTF-A mediates the activation of COL1A1 expression stimulated by multiple signaling pathways in human breast cancer cells.

Deposition of type I collage in ECM is an important property of various fibrotic diseases including breast cancer. The excessive expression of type I collagen contributes to the rigidity of cancer tissue and increases the mechanical stresses which facilitate metastasis and proliferation of cancer cells via the activation of TGF-β signaling pathway. The increased mechanical stresses also cause the compression of blood vessels and result in hypoperfusion and impaired drug delivery in cancer tissue.

The Wnt-β-catenin signaling regulated transcription to activate migration-related genes in human breast cancer cells.

MRTF-A is a transcriptional co-activator being critical for multiple processes including tissue fibrosis and cancer metastasis. The Rho-actin signaling stimulates the nuclear translocation and transcriptional activity of MRTF-A with little effect on the expression of gene. High expression of MRTF-A was observed in pancreatic cancer tissues and in TGF-β treated breast cancer cells.

Performance and microbial community of completely autotrophic nitrogen removal over nitrite (CANON) process in two membrane bioreactors (MBR) fed with different substrate levels.

To study the influence of substrate on completely autotrophic nitrogen removal over nitrite (CANON) process, two membrane bioreactors (MBR) with identical setup but fed with different substrate levels (R1 with low ammonia, R2 with high ammonia), were adopted in this study. The nitrogen removal performance, bioactivity, biodiversity and distribution of the functional microorganisms in two reactors were investigated. Both the aerobic ammonia-oxidizing bacteria (AerAOB) and anaerobic ammonia-oxidizing bacteria (AnAOB) in R2 showed higher bioactivity than those in R1, while nitrite-oxidizing bacteria (NOB) showed the contrary result.

Autotrophic nitrogen removal from domestic sewage in MBR-CANON system and the biodiversity of functional microbes.

The feasibility of completely autotrophic nitrogen removal over nitrite (CANON) process for treating domestic sewage was investigated in membrane bioreactor (MBR), for which conventional activated sludge was seeded at ambient temperature. By gradually decreasing hydraulic retention time under the oxygen-limited condition, CANON was successfully started-up for 78 days. Finally the MBR-CANON system was adopted for treating domestic sewage, nitrogen and COD removal achieved to 0.

Expression of both matrix metalloproteinase-2 and its tissue inhibitor-2 in tunica media of radial artery in uremic patients.

Objective: To investigate the expression and clinical significance of both matrix metalloproteinase-2 (MMP-2) and its tissue inhibitor (tissue inhibitor of metalloproteinase-2 (TIMP-2)) in tunica media of radial artery in uremic patients.

Methods: The modified radial arteries from 80 uremic patients during internal arteriovenous fistula surgery were selected and used as experimental specimens. The calcification of tunica media was observed by alizarin red staining, and the expression status of MMP-2, TIMP-2, osteoprotegerin (OPG), and osteopontin (OPN) in tunica media of radial arteries of these patients was detected by immunohistochemical method.

Total synthesis of (-)-Przewalskin B.

The first total synthesis of (-)-Przewalskin B has been accomplished with an intramolecular nucleophilic acyl substitution (INAS) reaction and an intramolecular aldol condensation as key steps.

Biomimetic total synthesis of (+)-chabranol.

A concise, biomimetic total synthesis of the unprecedented terpenoid skeleton (+)-chabraol has been accomplished via 6 steps from the chiral epoxide 7, involving an intramolecular Prins double cyclization to yield the bicyclo[2.2.1] core of the natural product as the key step.

Pt-catalyzed tandem 1,2-acyloxy migration/intramolecular [3 + 2] cycloaddition of enynyl esters.

A platinum-catalyzed tandem reaction involving enynyl ester isomerization and subsequent intramolecular [3 + 2] cyclization has been developed. This strategy provides an efficient approach to five-, six-, or seven-membered cyclic polyfunctional compounds.

Efficient asymmetric total syntheses of cryptocarya triacetate, cryptocaryolone, and cryptocaryolone diacetate.

Concise and efficient asymmetric total syntheses of three substituted alpha-pyrone-type natural products have been accomplished via 7-9 steps from 5b in high overall yields, which involve linchpin coupling, ring-closing metathesis, and a tandem sequence of deacetylation and intramolecular oxa-Michael addition as the key steps.

Application of a domino Friedel-Crafts acylation/alkylation reaction to the formal syntheses of (+/-)-taiwaniaquinol B and (+/-)-dichroanone.

An efficient acid-promoted domino Friedel-Crafts (FC) acylation/alkylation reaction has been developed for the construction of the core 6,5,6-ABC tricyclic skeleton of taiwaniaquinoids. The formal total syntheses of diterpenoids (+/-)-taiwaniaquinol B and (+/-)-dichroanone based on this strategy have been achieved.