Tourism destinations information seeking and dissemination behaviors on social networking sites

Social networking sites (SNS) are a modern form of communication used by the young people across the world. Many young people discuss on forums and exchange information, opinions on SNS. This study empirically examines the effects of consumer opinion leadership (COL) and consumer susceptibility to interpersonal influence (CSII) on young people’s tourism destinations information seeking and dissemination behavior on SNS from consumers’ point of view. The study aimed to answer the following questions: Does COL and CSII affect young people’s tourism destinations information seeking and dissemination behavior on SNS? Is there gender difference in young people’s tourism destinations information seeking and dissemination behavior on SNS? The data generated from various instruments were organized into emerging themes to validate the findings. The results indicated COL and CSII only affected tourism destinations information seeking and dissemination behaviors on SNS of young people. Gender was not supported by the research. These findings suggest that, marketing activities and tactics should be engaged to attract opinion leaders

Maize in Vietnam: Production Systems, Constraints, and Research Priorities

Crop Production/Industries,

PHÂN LẬP VÀ KHẢO SÁT HOẠT TÍNH GÂY ĐỘC TẾ BÀO UNG THƯ CỦA MỘT SỐ HỢP CHẤT TỪ CÂY BÙ LỐT (Grewia bulot)

Three compounds, including β-amyrin (1), quercetin (2) and β-sitosterol (3), were isolated from the leaves of Grewia bulot. Their structures were elucidated by using infrared spectroscopy (IR) and nuclear magnetic resonance (NMR) spectroscopy and by comparing them with spectroscopic data in the literature. The cytotoxic testing results of the isolated compounds against four tested cancer cell lines (MCF-7, Hep-G2, SK-LU-1, and KB) showed that β-amyrin had weak activity on three cell lines MCF-7, Hep-G2, and SK-LU-1 with IC50 values ranging from 72.3 to 96.15 µg·mL–1. This is the first time these compounds were isolated from Grewia bulot and evaluated for their cytotoxic activity.Ba hợp chất β-amyrin (1), quercetin (2) và β-sitosterol (3) được phân lập từ lá cây Bù lốt (Grewia bulot). Cấu trúc của chúng được xác định thông qua việc phân tích các phổ IR và NMR và so sánh với số liệu trong các tài liệu tham khảo. Kết quả thử nghiệm hoạt tính gây độc của các hợp chất phân lập với bốn dòng tế bào ung thư thử nghiệm (MCF-7, Hep-G2, SK-LU-1 và KB) cho thấy hợp chất β-amyrin có hoạt tính gây độc yếu trên ba dòng tế bào MCF-7, Hep-G2 và SK-LU-1 với giá trị IC50 từ 72,3 đến 96,15 µg·mL–1. Đây là lần đầu tiên các hợp chất này được phân lập từ cây Bù lốt và thử hoạt tính gây độc tế bào ung thư

PATHOGENICITY OF EIMERIA SPECIES ISOLATED FROM CHICKEN IN THUA THIEN HUE PROVINCE

Abstract: The present study clarifies the effect of locally isolated Eimeria species on chickens in central Vietnam. Oocysts of Eimeria species were isolated from feces suspected to be infected with coccidiosis in 3 farms in Huong Thuy district, Thua Thien Hue province. A total of 54 2-week-old chickens were randomly allocated to 2 groups: 3 replicates containing 9 chickens in each replicate. The chicken in group 1 were orally inoculated with 2×104 isolated oocysts of Eimeria species, while the chickens in group 2 were inoculated with PBS as a control. Growth performance, oocyst output, gross lesions, and histopathological lesions were measured at 5, 10 and 28 days after infection. The chicks in group 1 showed general signs of ruffled feathers, anorexia, huddling together with diarrhea and/or bloody dropping from 4–7 days post-infection. Feed intake, growth performance and body weight in group 1 were lower than those of the control chicks. The oocyst was detected in the feces of chicks in group 1 from 6–14 days post-infection, among them, the number of oocysts reach the peak at 8 days post-infection. At day 5 post-infection, the most damaged part of the intestine is the ceca with a large amount of blood in the ceca content. The histopathological lesions were detected clearly by HE staining at day 5 and 10 post-infection. In conclusion, the locally isolated oocysts of Eimeria species have high virulence to the chickens. The present study provides useful information related to the pathogenicity of Eimeria species which may contribute to coccidiosis diagnosis and treatment in poultry production.Keywords: Eimeria, coccidiosis, infection, central Vietna

Extract and fraction of cashew nut testa ameliorate the hyperglycemic mice induced by Streptozotocin and high-fat diet

Drug strategy is a standard method for treating type 2 diabetes mellitus (T2D), a non-communicable disease with increasing prevalence, which may cause side effects. Therefore, natural compounds with limited adverse effects have come back into vogue for treating T2D. This study aims to evaluate the effects on rehabilitating hyperglycemic mice of cashew nut testa (husk) extract and fraction known as potential bio-substances for improvement in T2D. First, the hyperglycemic mice were induced with a high-fat diet (HFD) for 4 weeks and then were injected with streptozotocin (STZ, dozen for injection was 40 mg/kg/week) for 2 weeks. Next, the confirmed hyperglycemic mice were treated with pioglitazone (HG+PG group), total extract (HG+TE group), and saponin-rich fraction (HG+SRF group) for 3 weeks. Then, the evaluation was based on body mass; blood glucose (BG) level; BG tolerance, lipid profile, pancreatic histology and the expression IRS-1 in the pancreas. The results showed that body mass and BG level significantly increased in hyperglycemic mice. After substance treatment, there was no change in body mass in TE and SRF groups. However, BG level of HG+TE group mice significantly decreased compared to hyperglycemic mice and only BG tolerance of HG+SRF group was improved. Besides, HG+TE and HG+SRF groups modulated the triglyceride, HDL and LDL close to those expressed in normal mice. In addition, histological images of the pancreas revealed the restoration in both HG+TE and HG+SRF groups. Simultaneously, the IRS-1 expression in HG+TE group pancreas was restored to its expression in normal mice. These results demonstrate that the TE and SRF of cashew nut testa could ameliorate BG, lipid profile and pancreatic IRS-1 expression and restore the damaged pancreas and islets in hyperglycemic mice

Immunohistochemical expression of anaplastic lymphoma kinase in neuroblastoma and its relations with some clinical and histopathological features

Background Anaplastic lymphoma kinase (ALK) mutations have been identified as a prominent cause of some familial and sporadic neuroblastoma (NB). ALK expression in NB and its relationship with clinical and histopathological features remains controversial. This study investigated ALK expression and its potential relations with these features in NB. Methods Ninety cases of NB at the Department of Pathology, University of Medicine and Pharmacy at Ho Chi Minh City, Viet Nam from 01/01/2018 to 12/31/2021, were immunohistochemically stained with ALK (D5F3) antibody. The ALK expression and its relations with some clinical and histopathological features were investigated. Results The rate of ALK expression in NB was 91.1%. High ALK expression (over 50% of tumor cells were positive with moderate-strong intensity) accounted for 65.6%, and low ALK expression accounted for 34.4%. All the MYCN-amplified NB patients had ALK immunohistochemistry positivity, most cases had high ALK protein expression. The undifferentiated subtype of NB had a lower ALK-positive rate than the poorly differentiated and differentiated subtype. The percentages of ALK positivity were significantly higher in more differentiated histological types of NB (p = .024). There was no relation between ALK expression and: age group, sex, primary tumor location, tumor stage, MYCN status, clinical risk, Mitotic-Karyorrhectic Index, prognostic group, necrosis, and calcification. Conclusions ALK was highly expressed in NB. ALK expression was not related to several clinical and histopathological features. More studies are needed to elucidate the association between ALK expression and ALK gene status and to investigate disease progression, especially the oncogenesis of ALK-positive NB

Influence of foliar application with Moringa oleifera residue fertilizer on growth, and yield quality of leafy vegetables

Biofertilizers produced from organic materials help to promote the growth, and yield quality of crops and is more environmentally friendly than chemical fertilizers. Moringa oleifera is a leafy vegetable whose leaves are also used to make biofertilizers. The use of moringa non-edible parts in biofertilizer preparation remains under-explored. In this study, a procedure to produce moringa foliar biofertilizer (MFB) from non-edible parts was developed. The effect of composting time (3 to 4 months) on the quality of MFB was investigated, and four-month incubation was found suitable for biofertilizers yield with the highest nitrogen content and optimal pH. Furthermore, the influences of MFB doses (20 to 100 mL per Litre) on the growth of lettuce and mustard spinach were studied. The yield of these leafy vegetables was the highest at 100 mL per Litre of MFB spray. Finally, MFB was compared with other commercial foliar sprays, including chitosan fertilizer and seaweed fertilizer. Each foliar treatment was applied every five days until five days before harvest. Plant height, the number of leaves, canopy diameter, leaf area index, actual yield, ascorbic acid content, and Brix were found to be similar in lettuce sprayed with MFB, chitosan, and seaweed fertilizers. In conclusion, the application of MFB promoted the growth and yield of mustard spinach