Solo dining in Chinese restaurants: A mixed-method study in Macao.

Given the emergence of solo dining resulting from the changing family structure and increasingly individualised lifestyle in contemporary Chinese society, this study investigates solo dining in the setting of Chinese restaurants in Macao, including the solo dining motivations, behavioural characteristics, and experiences, taking into considerations the underlying social and cultural factors. Adopting a sequential exploratory mixed-method design, 18 interviews were conducted, followed by a survey with 493 local diners. Findings show that freedom of choice and satisfying hunger are the main motivations for solo dining, and some solo-friendly attributes, food-related attributes, and restaurant characteristics are considered as important elements. Solo dining is perceived positively, partly because its perceptions and experiences are shaped by the diners' socio-cultural backgrounds and unique regional characteristics, in which solo dining is considered relatively common in Macao as opposed to extant literature that has suggested an essentialised assumption about Chinese group-oriented dining preference. Sociocultural insights and managerial implications are provided in catering to the growing solo diner market.

Antitumor activity of 7-O-succinyl macrolactin A tromethamine salt in the mouse glioma model.

Chemoradiotherapy with temozolomide is the current standard treatment option for patients with glioblastoma. However, the majority of patients with glioblastoma survive for <2 years. Therefore, it is necessary to develop more effective therapeutic strategies for the treatment of glioblastoma. 7-O-succinyl macrolactin A tromethamine salt (SMA salt), a macrolactin compound, is known to possess an antiangiogenic activity. The present study investigated the antitumor effects of SMA salt in the treatment of glioblastoma by evaluating in vitro and in vivo antitumor effects of SMA salt in an experimental glioblastoma model. The antitumor effects of the drug on human glioblastoma U87MG, U251MG and LN229 cell lines were assessed using in vitro cell viability, migration and invasion assays. Nude mice with established U87MG glioblastoma were assigned to either the control or SMA salt treatment group. The volume of tumors and the duration of survival were also measured. SMA salt affected cell viability and caused a concentration-dependent inhibition effect on the migration and invasion of glioblastoma cell lines. Animals in the SMA salt treatment group demonstrated a significant reduction in tumor volume and an increase in survival (P<0.05). Treatment with SMA salt presented more cytotoxic effects as well as anti-migration and anti-invasion activity compared with the control group in vitro and in vivo. These results suggest that SMA salt has significant antitumor effects on glioblastoma.

Analysis of TPOX short tandem repeat locus with matrix-associated laser desorption/ionization time-of-flight-based restriction fragment mass polymorphism assay.

Short tandem repeat (STR) loci are routinely analyzed by capillary electrophoresis. However, this method has several disadvantages, including long operational time, low throughput, and inaccuracy. As a result of the introduction of matrix-associated laser desorption/ionization time-of-flight (MALDI-TOF) and electrospray ionization (ESI), mass spectrometry has become an alternative method for genotyping polymorphic STR loci. Here we established a restriction fragment mass polymorphism (RFMP) assay for genotyping STR locus, TPOX, by typeIIS restriction endonuclease cleavage of polymerase chain reaction (PCR) amplicon followed by MALDI-TOF mass spectrometry. The resulting TPOX genotypes from this assay were in good agreement with the results from direct DNA sequencing and GeneScan assays. Our results showed that the RFMP assay is an accurate and high-throughput method for analyzing long DNA fragments such as STR markers. Further research with multiple STR loci may allow this assay to be used for diverse applications such as forensics, paternity tests, and detection of genetic disorders.

Metastatic effect of LY-6K gene in breast cancer cells.

The over-expression of urokinase receptor in breast cancer cells results in increased tumor invasion, growth and metastasis. As LY-6K belongs to the Ly6/uPAR superfamily, we assessed the association of LY-6K with metastasis in breast cancer cell lines and how the LY-6K gene mediates cancer cell metastasis. The migration ability of cells in which expression of LY-6K gene is up- or down-regulated was investigated by transfecting LY-6K naked DNA and treating LY-6K siRNA. Assays of wound healing, migration and invasion were performed. The assays demonstrated that cell migration significantly increased when LY-6K gene is over-expressed or LY-6K protein is abnormally expressed in breast cancer cells. In addition, LY-6K caused cancer cell metastasis and it is linked to the Ras/ERK signaling pathway. Our results suggest that LY-6K meaningfully participates in breast cancer cell metastasis by influencing cell migration and invasion through the Ras/ERK pathway.