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Effects of glutamine-containing total parenteral nutrition on phagocytic activity and anabolic hormone response in rats undergoing gastrectomy

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World Journal of Gastroenterology 2005年第6期11卷 817-822页

作者： Chen-Hsien Lee Wan-Chun Chiu Soul-chin Chen Chih-Hsiung Wu Sung-ling Yeh Institute of Nutrition and Health Sciences Department of Surgery

AIM: To investigate the effect of glutamine (Gln)-containing parenteral nutrition on phagocytic activity and to elucidate the possible roles of Gln in the secretion of anabolic hormones and nitrogen balance in rats undergoing a gastrectomy. METHODS: Rats with an internal jugular catheter were divided into 2 experimental groups and received total parenteral nutrition (TPN). The TPN solutions were isonitrogenous and identical in nutrient compositions except for differences in amino acid content. One group received conventional TPN (control), and in the other group, 25% of the total amino acid nitrogen was replaced with Gin. After receiving TPN for 3 d, one-third of the rats in each experimental group were sacrificed as the baseline group. The remaining rats underwent a partial gastrectomy and were killed 1 and 3 d, respectively, after surgery. Plasma, peritoneal lavage fluid (PLF), and urine samples were collected for further analysis. RESULTS: The Gln group had fewer nitrogen losses 1 and 2 d after surgery (d1, 16.6±242.5 vs-233.4±205.9 mg/d, d2, 31.8±238.8 vs-253.4±184.6 mg/d, P<0.05). There were no differences in plasma growth hormone (GH) and insulin-like growth factor-1 levels between the 2 groups before or after surgery. The phagocytic activity of peritoneal macrophages was higher in the Gln group than in the control group 1 d after surgery (A 1185±931 vs323±201, P<0.05). There were no differences in the phagocytic activities of blood polymorphonuclear neutrophils between the 2 groups at the baseline or on the postoperative days. No significant differences in interleukin-1β or interleukin-6 concentrations in PLF were observed between the 2 groups. However, tumor necrosis factor-α level in PLF was significantly lower in the Gln group than in the control group on postoperative d 3. CONCLUSION: TPN supplemented with Gln can improve the nitrogen balance, and enhance macrophage phagocytic activity at the site of injury. However, Gin supplementation has no effect on p

关键词： Parenteral Nutrition Glutamine Phagocytosis Gastrectomy

Tabletting Characteristics of the Selected Malaysian Herbs

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Journal of Food Science and Engineering 2013年第5期3卷 255-266页

作者： Yus Aniza Yusof chin nyuk ling Mohd Shamsul Anuar Sobah Ahmad Rohaiza Abdullah Che Rodiziah Md Nor Mohammad Gulzarul Aziz Department of Process and Food Engineering Faculty of Engineering Universiti Putra Malaysia 43400 UPM Serdang SelangorMalaysia Department of Food Technology and Rural Industries Bangladesh Agricultural University Mymensingh Bangladesh

This work describes a study of tabletting of selected Malaysian herbs such as Eurycoma longifolia Jack, Ficus deltoidea and Morinda citrifolia. These herbs are famous for their therapeutic properties and are used as herbal medicine or as medicinal food. A cylindrical uniaxial die of 13 mm was used to compress the herb powders into tablets. Pressures ranging from 7.5 MPa to 75 MPa were applied using a universal testing machine. Two feed weights, 0.5 g and 1.0 g, were used to produce the tablets. A binder, the microcrystalline cellulose known as Avicel, was used to investigate its effect on tabletting. Properties associated with both the binder and the compounds were studied, and binary mixtures with compositions ranging from 10% to 60% were examined. The strength of the herb tablets was then tested using an indirect tensile strength test. Upon compression, the Morinda citrifolia powder showed the highest density compared to that of Avicel. However, due to its high elasticity, the tensile strength of the Morinda citrifolia tablet was the lowest. The experimental data were also verified using an established model for compression property development. The results indicated that this simple approach can be used to understand the tabletting characteristics of these herbs.

关键词： Eurycoma longifolia Jack Ficus deltoidea Morinda citrifolia tabletting tensile strength

Synthesis and Characterization of Thermoplastic Poly(Ester Amide)s Elastomer (TPEaE) Obtained from Recycled PET

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Journal of Renewable Materials 2021年第5期9卷 867-880页

作者： Zhi-Yu Yang Yi-ling Chou Hao-Chun Yang chin-Wen Chen Syang-Peng Rwei Institute of Organic and Polymeric Materials Research and Development Center of Smart Textile TechnologyNational Taipei University of TechnologyTaipei10608Taiwan

A series of thermoplastic polyester elastomer (TPEE) and thermoplastic poly(ester amide)s elastomer (TPEaE)copolymers were obtained by depolymerizing PET (polyethylene terephthalate) by which the waste PET canbe efficiently recovered and recycled into value-added products from a practical and economical point of *** structure of TPEE and TPEaE was identified using nuclear magnetic resonance (NMR) and Fourier transforminfrared spectroscopy (FT-IR). Differential scanning calorimetry (DSC) data showed that the melting temperature(Tm) decreased with the amide content increased. The glass transition temperature (Tg) was increased as introducingthe amide group, and the formation of amide-ester and amide-amide hydrogen bonds increased the intermolecularchain force. The intrinsic viscosity (η) showed the tendency of increment from TPEE (0.53 dL g^(−1)) to TPEaE-5%(0.72 dL g^(−1)) due to the reinforcement of hydrogen bond and chain entanglement.

关键词： Recycle polyethylene terephthalate(r-PET) depolymerization thermalplastic poly(ester amide)s copolymer(TPEaE)

Inhibitory activities of microalgal extracts against Epstein-Barr virus DNA release from lymphoblastoid cells

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第5期12卷 335-345页

作者： Yih-Yih KOK Wan-Loy CHU Siew-Moi PHANG Shar Mariam MOHAMED Rakesh NAIDU Pey-Jiun LAI Shui-nyuk ling Joon-Wah MAK Patricia Kim-Chooi LIM Pauline BALRAJ Alan Soo-Beng KHOO Division of Human Biology International Medical University Institute of Biological Sciences Faculty of Scienceand Institute of Ocean and Earth Sciences(IOES)University of Malaya Faculty of Medicine University of Malaya School of Medicine and Health Sciences Monash University Molecular Pathology Unit Institute for Medical ResearchJalan Pahang

This study aimed to assess the inhibitory activities of methanol extracts from the microalgae Ankistrodesmus convolutus,Synechococcus elongatus,and Spirulina platensis against Epstein-Barr virus(EBV) in three Burkitt's lymphoma(BL) cell lines,namely Akata,B95-8,and *** antiviral activity was assessed by quantifying the cell-free EBV DNA using real-time polymerase chain reaction(PCR) *** methanol extracts from Ankistrodesmus convolutus and Synechococcus elongatus displayed low cytotoxicity and potent effect in re-ducing cell-free EBV DNA(EC5028 000).After fractionation by column chromatography,the fraction from Synechococcus elongatus(SEF1) reduced the cell-free EBV DNA most effectively(EC50=2.9 μg/ml,therapeutic index>69).Upon further fractionation by high performance liquid chromatography(HPLC),the sub-fraction SEF1'a was most active in reducing the cell-free EBV DNA(EC50=1.38 μg/ml,therapeutic index>14.5).This study suggests that microalgae could be a potential source of antiviral compounds that can be used against EBV.

关键词： Microalgae Ankistrodesmus convolutus Synechococcus elongatus Spirulina platensis Lymphoblastoid cells Epstein-Barr virus(EBV)

Root exclusion methods for partitioning of soil respiration:Review and methodological considerations

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Pedosphere 2023年第5期33卷 683-699页

作者： Mei-Yee chin Sharon Yu ling LAU Frazer MIDOT Mui Sie JEE Mei Lieng LO Faustina E.SANGOK Lulie MELling Sarawak Tropical Peat Research Institute Lot 6035Kuching-Kota Samarahan ExpresswayKota SamarahanSarawak 94300Malaysia

Soil respiration is a vital process in all terrestrial ecosystems,through which the soil releases carbon dioxide(CO_(2))into the atmosphere at an estimated annual rate of 68–101 Pg carbon,making it the second highest terrestrial contributor to carbon *** soil respiration consists of autotrophic and heterotrophic constituents,methods for accurately determining the contribution of each constituent to the total soil respiration are critical for understanding their differential responses to environmental factors and aiding the reduction of CO_(2)*** to its low cost and simplicity,the root exclusion(RE)technique,combined with manual chamber measurements,is frequently used in field studies of soil respiration ***,RE treatments alter the soil environment,leading to potential bias in respiration *** review aims to elucidate the current understanding of RE,i.e.,trenching(Tr)and deep collar(DC)insertion techniques,by examining soil respiration partitioning studies performed in several ***,we discuss methodological considerations when using RE and the combinations of RE with stable isotopic and modeling ***,future research directions for improving the Tr and DC insertion methods in RE are suggested.

关键词： autotrophic respiration deep collar insertion heterotrophic respiration microbial respiration root trenching soil microbial community soil respirationcomponent

A Foreword from the Editor-in-Chief

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Journal of Electronic & Information Systems 2019年第1期1卷 1-2页

作者： chin-ling Chen Chaoyang University of Technology Taiwan

Due to the advancement of information technology,Journal of Electronic&Information Systems aims to discover innovative methods,theories and studies in its field by publishing original articles,case studies and comprehensive *** of Electronic&Information Systems provides a wide range of readers and authors.A good communication platform,in the expectation,the first issue of the first volume was first *** of Electronic&Information Systems publishes original research papers that it has officially applied for the electronic ISSN(Online)to be *** current Vol.1 No.1 will be issued with electronic *** this issue of the public collection section,there are included four articles.

关键词： expectation publishing innovative

A rare cause of acute abdomen–Spontaneous rectus sheath hematoma

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Asian Pacific Journal of Tropical Biomedicine 2016年第10期6卷 892-895页

作者： Hock chin Chong Feng Yih Chai Yew Eng Tan Sophia Si ling Heng Siti Asilah Mohd Desa Department of Surgery Hospital Queen Elizabeth Department of Surgery Hospital Keningau

Spontaneous rectus sheath hematoma(SRSH) is a rare entity that mimics acute *** sheath hematoma is the accumulation of blood in rectus sheath due to muscle or epigastric vessel injury. However, SRSH without a trauma or anticoagulation is rare. It frequently mimics acute abdomen and it may lead to misdiagnosis and unnecessary laparotomy. In this article, we described two cases of SRSH with their diagnostic and therapeutic strategy. Both of our patients in report were neither consumed antiplatelet nor coagulopathy. They both had abdominal muscle straining before their symptoms presentation. We hypothesized that the SRSH may be induced by rectus muscle injury secondary to inappropriate straining or posture. To diagnose SRSH, clinical findings are important but radiologic imaging such as computed tomography, can be diagnostic. In expanding SRSH, percutaneous arterial embolization of epigastric artery is useful to secure the bleeding. If embolization is not feasible, surgical exploration hemostasis is curative. In non-expanding SRSH, it can be managed nonoperatively. SRSH is an important initial differential for acute abdomen. Radiologic imaging helps in *** SRSH can be managed conservatively with good outcome.

关键词： Rectus muscle injury Epigastric vessel Spontaneous Acute abdomen

Anti-hypercholesterolemic effect of kenaf(Hibiscus cannabinus L.)seed on high-fat diet Sprague dawley rats

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Asian Pacific Journal of Tropical Medicine 2015年第1期8卷 6-13页

作者： Ng Shy Kai Tee Ai Nee Elaine Lai Chia ling Tan chin Ping Long Kamariah Nyam Kar Lin Department of Food Science and Nutrition Faculty of Applied SciencesUCSI University Department of Food Technology Faculty of Food Science and TechnologyUniversiti Putra Malaysia Malaysian Agricultural Research & Development Institute

Objective:To determine? the anlihypercholesterolemic effects of kenaf seed samples and compare with the commercial hypocholesterolemic drug on serum lipids profiles and malondialdehyde(MDA) level in the ***:Kenaf seed oil(KSO),microencapsulated kenaf seed oil(MKSO),kenaf seed extract(KSE) and defatted kenaf seed meal(DKSM) were prepared and phytocHemicals screening on these samples were done prior in viro *** compounds in *** quantified using high performance liquid *** were 40(divided in eight diet groups of 5) male Sprague dawley rats adapted lo normal standard diet or hypercholesterolemic diet(HD) with or without the treatment of these kenaf samples for 32 ***:All the kenaf samples exhibited to contain most of the major *** possessed gallic acid,tannic acid,*** acid,syringic acid,sinapic acid,ferulic acid,naringin acid,and protocatechuic *** significant higher(P<0.05) serum total cholesterol,low density lipoprotein cholesterol and MDA levels in HD group without treatment than the normal control group suggested the hypercholesterolemia was induced by the Incorporation of cholesterol into *** exhibited higher cholesterol-lowering properties due to the significant lower(P<0.05)in serum triglycerides,total cholesterol and MDA *** showed the highest efficiency of cholesterol-lowering activity,followed by *** and ***:*** and KSE appeared lo have comparable anti-hypercholesterolemic effect with the commercial hypocholesterolemic ***,kenaf seed could be used as an alternative natural source lo replace the synthetic hypocholosterolemic drugs.

关键词： Hibiscus cannabinus Hypercholesterolemia Phytochemical screening Phenolic compounds Sprague dawley Oxidative stress

高活性多壁碳纳米管/TiO_2纳米复合物光催化剂光催化降解活性黑5染料(英文)

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催化学报 2014年第12期35卷 2014-2019页

作者： Sharifah Bee Abd Hamid Tong ling Tan chin Wei Lai Emy Marlina Samsudin Nanotechnology & Catalysis Research Centre(NANOCAT) Institute of Graduate Studies Building University of Malaya 50603 Kuala Lumpur Malaysia

A nanocomposite UV-visible light-responsive multiwalled carbon nanotube (MWCNT)/titanium dioxide(TiO2) nanophotocatalyst was successfully synthesized by a modified sol-gel method using titanium isopropoxide and functionalized MWCNTs as the starting precursors. The photocatalytic activity of the TiO2 and the nanohybrid material was investigated through the photodegradation of Reactive Black 5 dye under ultraviolet light irradiation. X-ray diffraction analysis indicated that anatase phase was obtained for both the pure TiO2 and the MWCNT/TiO2 composite, while Raman spectroscopy confirmed the presence of MWCNTs in the composite. Field emission scanning elec-tron microscopy revealed that TiO2 nanoparticles with an individual diameter of about 10–20 nm were coated on the surface of the MWCNTs. The specific surface areas of the samples were found to be 80 and 181 m2/g for the pure TiO2 and MWCNT/TiO2, respectively. As a result, MWCNT/TiO2 showed better photocatalytic performance than pure TiO2 because the high surface area of MWCNTs enabled them to function as good electron acceptors for the retardation of electron-hole pair recombination.

关键词：多壁碳纳米管纳米复合材料 TiO2 光催化剂光降解活性黑二氧化钛纳米颗粒染料