Background: Although dual blockade HER2-based neoadjuvant chemotherapy is associated with excellent outcomes for human epidermal growth factor receptor 2 (HER2)-positive breast cancer, pertuzumab is not available to all patients due to cost. The optimal neoadjuvant chemotherapy for HER2-positive breast cancer in the presence of a single HER2 blockade is unknown. This study aimed to compare the efficacy and safety of epirubicin/cyclophosphamide followed by docetaxel/trastuzumab (EC-TH) with docetaxel/carboplatin/trastuzumab (TCH) neoadjuvant setting for HER2-positive breast cancer under the single HER2 blockade.
View Article and Find Full Text PDFA selectivity switch in a Rh /carbene-triggered cyclopentannulation with catalytic InCl is reported for the first time, affording both diastereomers of the fused spiroindolines and an unusual bridged tetracyclic indoline in high yields with excellent selectivities. Mechanistic studies indicate an intramolecular annulation of the indole with an in situ formed aminocyclopropane. The stepwise thermal conversions from the kinetic spiroindoline to the metastable bridged indoline, and then to the thermodynamic spiroindoline, involving a ring-opening rearrangement of a cyclopentane, is crucial for selectivity control.
View Article and Find Full Text PDFNickel-catalyzed asymmetric annulation of oxygenated phenols and previously challenging 3-aminophenols with β,γ-unsaturated α-ketoesters is described, leading to rapid access to a variety of oxygenated and 7-aminated chromans in excellent yields with excellent diastereoselectivities and enantioselectivities under mild conditions. This method was readily scaled-up to gram scale and applied for a concise synthesis of two potential anticancer agents 7-aminated 4-arylchromans.
View Article and Find Full Text PDFA facile and efficient method to produce optically pure benzofuroindolines, especially those without 3-substituents that are susceptible to rearomatization, through [3+2] annulation of indoles with quinones is described. The suitable combination of a BOX ligand Cu hydrate complex and freshly activated molecular sieves functions to give controllably dynamic release of water, which enables the success of this reaction. This reaction can be performed on a gram scale with only 0.
View Article and Find Full Text PDFZhonghua Zheng Xing Wai Ke Za Zhi
November 2011
Objective: To report our primary experience with immediate breast reconstruction using laparoscopically harvested omental flap after breast-conserving surgery. The safety, feasibility, and clinical effect are also evaluated.
Methods: From Jun.
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi
February 2011
Aim: To construct an inducible artificial microRNA expression vector targeting eIF3g gene and use it to inhibit the expression of eIF3g in K562 cells.
Methods: The microRNA targeting human eIF3g was designed and obtained by PCR. After confirmed by sequencing, the microRNA was cloned into the pRevTRE2 plasmid.
To optimize enzymatic hydrolysis of steam-exploded corn stover (SECS), two approaches, response surface methodology (RSM) and utilization of the cellulase from mixed cultures of Trichoderma reesei RUT-C30 and Aspergillus niger NL02, were introduced in this work. The RSM, the first approach, was consisted of Plackett-Burman Design (PBD) and Central Composite Design (CCD). After the optimization of RSM, a model was proposed to predict the optimum value 79.
View Article and Find Full Text PDFBackground/aims: Preoperative chemotherapy is considered an effective treatment option for patients with gastric cancer. We retrospectively evaluated neoadjuvant chemotherapy with oxaliplatin, leucovorin and 5-flurouracil (OLF) in patients with locally advanced gastric cancer to determine its feasibility, as well as impact on the curative resection rate and patients' survival.
Methodology: A total of 87 patients with locally advanced gastric cancer that underwent preoperative chemotherapy combined with surgery or surgery alone were randomly matched according to the clinical TNM stage.
We previously reported that lymphatic mapping using isosulfan blue can be used to identify sentinel nodes (SNs). This study was undertaken to evaluate the feasibility of using the SN technique in treating early gastric cancer and to explore its usefulness for minimal invasive surgery. Twenty-three patients with early gastric cancer who underwent SN biopsy were retrospectively evaluated.
View Article and Find Full Text PDFBackground And Objectives: This study set out to determine the impact of different criteria for radioactive sentinel lymph nodes (SLNs) on sentinel lymph node biopsy (SLNB), and the optimal criteria for radioactive SLNs.
Methods: Eighty-four breast cancer patients with cT1-2N0M0 were studied prospectively. Filtered technetium 99 m sulfur colloid was injected in peritumor parenchyma.
We have encountered an unusual case of gastric carcinoid tumor. Gastroscopic examination of this 32-year-old male patient showed a smooth protrusion at the greater curvature of the gastric body with a central depression, identified by subsequent biopsy as carcinoma. The patient had a normal serum gastrin level and was negative for anti-parietal cell antibody.
View Article and Find Full Text PDFZhejiang Da Xue Xue Bao Yi Xue Ban
December 2003
Objective: To investigate the effects of sodium hyaluronate on the growth and adhesion of colorectal cancer cells.
Methods: Human colorectal cancer cell lines SW620 and Colo205 were treated with sodium hyaluronate (25 -2,500 microg/ml), and cancer cell proliferation was measured by MTT assay in vitro. Flow-cytometric analysis was applied to detect expression of CD44 on SW620 and Colo205 cells.
Zhonghua Zhong Liu Za Zhi
November 2003
Objective: To study intra-operative radionuclide lymphatic mapping in sentinel lymph node (SLN) biopsy of breast cancer.
Methods: Forty-two breast cancer (diameter = 5.0 cm) patients with clinically negative axillary node were analyzed.