The synthesis of structurally diverse amines is of fundamental significance in the pharmaceutical industry due to the ubiquitous presence of amine motifs in biologically active molecules. Biocatalytic reductive amination for amine production has attracted great interest owing to its synthetic advantages. Herein, we report the direct synthesis of a wide range of sterically demanding secondary amines, including several important active pharmaceutical ingredients and pharmaceutical intermediates, via reductive amination of carbonyl substrates and bulky amine nucleophiles employing imine reductases.
View Article and Find Full Text PDFZhongguo Shi Yan Xue Ye Xue Za Zhi
April 2022
The present study aimed to investigate the role and underlying mechanisms of long non-coding RNA (lncRNA) muscleblind-like 1 antisense RNA 1 (MBNL1-AS1) in the progression of Prostate cancer (PCa). MBNL1-AS1 and microRNA (miR)-181a-5p expression in PCa tissues and several human PCa cell lines were analyzed, respectively, using StarBasev3.0 project and RT-qPCR assay.
View Article and Find Full Text PDFRefractory prolonged isolated thrombocytopenia (RPIT) is an intractable complication after allogeneic hematopoietic cell transplantation (HCT), which often leads to poor prognosis. A clinical study was designed to validate the efficacy and safety of low-dose decitabine for RPIT after HCT and explore the related underlying mechanisms. Eligible patients were randomly allocated to receive 1 of 3 interventions: arm A, low-dose decitabine (15 mg/m2 daily IV for 3 consecutive days [days 1-3]) plus recombinant human thrombopoietin (300 U/kg daily); arm B, decitabine alone; or arm C, conventional treatment.
View Article and Find Full Text PDFThe cooperativity between hydrogen and halogen bonds plays an important role in rational drug design. However, mimicking the dynamic cooperation between these bonds is a challenging issue, which has impeded the development of the halogen bond force field. In this study, the Y220C-PhiKan5196 complex of p53 protein was adopted as a model, and the functions of three water molecules that formed hydrogen bonds with halogen atoms were analyzed by the simulation method governed by the hybrid quantum mechanical/molecular mechanical molecular dynamics.
View Article and Find Full Text PDFZhongguo Shi Yan Xue Ye Xue Za Zhi
October 2018
Objectives: To explore the effect of additional chromosomal abnormalities on the prognosis and outcome of CML-CP patients receiving imatinib therapy.
Methods: The clinical and genetic data of 589 CML-CP patients receiving imatinib treatment between May 2009 and October 2014 in the 1st Affiliated Hospital of Soochow University were analyzed, the 589 patients were divided into 5 groups according to the karyotypes at the initial diagnosis. The OS(overall survival), PFS (progression-free survival), EFS (event-free survival), Cumulative MMR (major molecular remission) and Cumulative CCyR (complete cytogenetic remission) were calculated by using the Kaplan-Meier method and compared by using the log-rank text by Graphpad 6.
Zhongguo Shi Yan Xue Ye Xue Za Zhi
December 2017
Objective: To explore the effect of BCR-ABL gene transcripts on Leukemia-free survival (LFS) and prognosis of patients with Philadelphia chromosome positive acute lymphoblastic leukemia (Ph ALL) after allogeneic hematopoietic stem cell transplantation (allo-HSCT).
Methods: The clinical data of 107 cases of Ph B-ALL patients received allo-HSCT from July 2006 to November 2014 in the First Affiliated Hospital of Soochow University were collected and the relationship between the clinical characteristics and LFS after transplantation was analyzed.
Results: Out of 107 Ph ALL patients (64 males and 43 females) with a median age of 30(7 to 54)years old, 35.
A wireless temperature sensor node composed of a piezoelectric wind energy harvester, a temperature sensor, a microcontroller, a power management circuit and a wireless transmitting module was developed. The wind-induced vibration energy harvester with a cuboid chamber of 62 mm × 19.6 mm × 10 mm converts ambient wind energy into electrical energy to power the sensor node.
View Article and Find Full Text PDFZhonghua Xue Ye Xue Za Zhi
February 2012
Objective: To explore disease progression and prognosis factors of novel influenza A (H1N1) in immunocompromised patients with or without hematologic disease.
Method: A total of 76 confirmed novel influenza A (H1N1) infection patients from November 2009 to March 2010 included in the study, their clinical feature was analyzed, and the relationship between clinical feature and outcome was explored retrospectively by multivariate analysis method.
Results: The whole 76 patients were administrated of oseltamivir.
Zhonghua Yi Xue Yi Chuan Xue Za Zhi
June 2011
Objective: To investigate the killer cell immunoglobulin-like receptor (KIR) gene frequencies and genotypes distributions in the Inner Mongolian population.
Methods: Ninety genomic DNA samples were extracted from blood samples of randomly chosen Mongolian individuals. Gene-specific PCR amplification was used to identify genes present or absent for 16 KIR loci.
Background And Objective: Studies on survivin over the past 5 years have shown that survivin participates in the genesis of several human cancers, including bladder cancer. Recent studies have indicated that survivin splice variants appeared to have unique subcellular localizations and functions as well. This study was to explore the roles of survivin and its two splice variants survivin-2B and survivin-DeltaEx3 in transitional cell carcinoma of bladder (BTCC).
View Article and Find Full Text PDFBackground And Objective: Bladder cancer is the most malignant cancer of the urinary system. However a noninvasive and sensitive method of the early diagnosis for bladder cancer has not been developed. This study was to explore the expression of survivin mRNA in urine exfoliated cells of preoperative and postoperative patients with bladder transitional cell carcinoma (BTCC), and to analyze its value in early diagnosis and postoperative monitoring.
View Article and Find Full Text PDFObjective: To study chemical constituents of Dendranthema indicum var. aromaticum.
Methods: The constituents were separated and purified by column chromatography with silica gel and Semi-preparative HPLC.
Objective: The chemical components of essential oil from Magnolia biondii were analyzed by GC-MS.
Methods: Essential oil was extracted by steam distillation (SD). The chemical components of essential oil were analyzed by GC-MS.