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Correlations between Mineral Nitrogen Contents and Vertical Distribution of N20 Emission Potentials in Tropical Peat Soils Transformed into Oil Palm Plantations in Sarawak, Malaysia

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Journal of Agricultural Science and Technology(B) 2014年第9期4卷 691-700页

作者： sharon yu ling lau Yasuyuki Hashidoko Naoki Takahashi Ryusuke Hatano Lulie Melling Research Faculty of Agriculture Hokkaido University Kita 9 Nishi 9 Kita-ku Sapporo 060-8589 Japan Tropical Peat Research Laboratory Unit Jalan Badruddin Kuching 93400 Malaysia

Tropical peat swamp forest beds that have been reclaimed for agricultural use are generally an active source of nitrous oxide （N2O） efflux, however, the mechanism by which reclaimed tropical peat soils promote the emergence of N2O emitters in soil microbial communities remains unclear. The purpose of this study was to reveal the vertical distribution of N2O emission potential and its correlation with mineral nitrogen contents in reclaimed soils. Using a culture-based N2O emission assay, the N2O emission potentials of soil at various depths （0-450 cm） were investigated in two oil palm plantations in Sarawak, Malaysia, which had elapsed times of two years （E2Y） and 10 years （El 0Y） after deforestation, respectively. On the basis of the relationship between the vertical profiles of N2O emission potentials and the contents of mineralized nitrogen in the peat soils at various depths, the impact of land management on soil microbial communities was discussed. The peat soil at plantation site E2Y showed a trend of high N2O production in deep layers （200-400 cm）, whereas the older plantation site E10Y showed considerably more active N2O emission in shallow soil （10-50 cm）. N2O emission potentials among the soil microbial communities at different soil depths at the E10Y site showed positive correlations with NO3- and NH4＋ contents, whereas, soils obtained from the E2Y site had N2O emission potentials that were inversely proportional to the contents of NO3-. This contrasting vertical correlation between N2O-emitting potentials and mineralized nitrogen contents in bulk soils suggests that active N2O emission in deep soil at the E2Y site has maintained the original carbon-nitrogen （C/N） ratio of the peat soil, whereas at EIOY, such a regulatory system has been lost due to advanced soil degradation, leading to dynamic changes in the nitrogen cycle in shallow soil.

关键词： N2O emitters tropical peat soil vertical N20 emission potential C/N ratio oil palm plantation.

Immunoregulatory and Anti-cancer Activities of Combination Treatment of Novel Four-Herb Formula and Doxorubicin in 4T1-Breast Cancer Bearing Mice

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Chinese Journal of Integrative Medicine 2024年第4期30卷 311-321页

作者： Lea ling-yu Kan Ben Chung-Lap Chan Grace Gar-Lee yue LI Pei-ting sharon Sze-Man Hon HUANG Dan-qi Miranda Sin-Man Tsang Clara Bik-San lau Ping-Chung Leung Chun-Kwok Wong Institute of Chinese Medicine The Chinese University of Hong KongHong Kong SARChina State Key Laboratory of Research on Bioactivities and Clinical Applications of Medicinal Plants The Chinese University of Hong KongHong KongChina Department of Chemical Pathology The Chinese University of Hong KongHong Kong SARChina China-Australia International Research Centre for Chinese Medicine School of Health and Biomedical SciencesSTEM CollegeRMIT UniversityBundooraVictoriaAustralia Li Dak Sum Yip Yio Chin R&D Centre for Chinese Medicine The Chinese University of Hong Kong SARHong KongChina

Objective To investigate the in vivo immunomodulatory and anti-tumor mechanisms of the combined treatment of novel Four-Herb formula(4HF)and doxorubicin in triple-negative breast cancer(TNBC).Methods Murine-derived triple-negative mammary carcinoma cell line,4T1 cells,was cultured and inoculated into mouse mammary ***-six mice were randomly assigned into 6 groups(n=11 in ench):naive,control,LD 4HF(low dose 4HF),HD 4HF(high dose 4HF),LD 4HF+D(low dose and doxorubicin),and D(doxorubicin).Apart from the naive group,each mouse received subcutaneous inoculation with 5×10^(5)4T1 cells resuspended in 100µL of normal saline in the mammary fat *** from the day of tumor cell inoculation,tumors were grown for 6 *** LD and HD groups received daily oral gavage of 658 and 2,630 mg/kg 4HF,*** LD 4HF+D group received daily oral gavage of 658 mg/kg 4HF and weekly intraperitoneal injection of doxorubicin(5 mg/kg).The D group received weekly intraperitoneal injections of doxorubicin(5 mg/kg).The treatment naive mice received daily oral gavage of 0.2 mL double distilled water and 0.1 mL normal saline via intraperitoneal injection once a *** control group received daily oral gavage of 0.2 mL double-distilled *** treatment period was 30 *** the end of treatment,mice organs were harvested to analyze immunological activities via immunophenotyping,gene and multiplex analysis,histological staining,and gut microbiota *** Mice treated with the combination of 4HF and doxorubicin resulted in significantly reduced tumor and spleen burdens(P<0.05),altered the hypoxia and overall immune lymphocyte landscape,and manipulated gut microbiota to favor the anti-tumor immunological ***,immunosuppressive genes,cytokines,and chemokines such as C-C motif chemokine 2 and interleukin-10 of tumors were significantly downregulated(P<0.05).4HF-doxorubicin combination treatment demonstrated synergetic activities and was most effective

关键词： adjunctivetherapy breast cancer cytokines Chinese medicine tumor microenvironment

Conservation of T cell epitopes between seasonal influenza viruses and the novel influenza A H7N9 virus

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Virologica Sinica 2014年第3期29卷 170-175页

作者： Huawei Mao Hui-ling Yen Yinping Liu yu-Lung lau J.S.Malik Peiris Wenwei Tu Department of Paediatrics The University of Hong Kong Shenzhen Hospital Department of Paediatrics & Adolescent Medicine The University of Hong Kong Centre of Influenza Research School of Public Health The University of Hong Kong

A novel avian influenza A(H7N9) virus recently emerged in the Yangtze River delta and caused diseases, often severe, in over 130 people. This H7N9 virus appeared to infect humans with greater ease than previous avian influenza virus subtypes such as H5N1 and H9N2. While there are other potential explanations for this large number of human infections with an avian influenza virus, we investigated whether a lack of conserved T-cell epitopes between endemic H1N1 and H3N2 influenza viruses and the novel H7N9 virus contributes to this observation. Here we demonstrate that a number of T cell epitopes are conserved between endemic H1N1 and H3N2 viruses and H7N9 virus. Most of these conserved epitopes are from viral internal proteins. The extent of conservation between endemic human seasonal influenza and avian influenza H7N9 was comparable to that with the highly pathogenic avian influenza H5N1. Thus, the ease of inter-species transmission of H7N9 viruses(compared with avian H5N1 viruses) cannot be attributed to the lack of conservation of such T cell epitopes. On the contrary, our findings predict significant T-cell based cross-reactions in the human population to the novel H7N9 virus. Our findings also have implications for H7N9 virus vaccine design.

关键词： H7N9 influenza virus T cell epitope conservation clinical phenotype vaccine immunity

Teaching chronic obstructive airway disease patients using a metered-dose inhaler

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Chinese Medical Journal 2006年第19期119卷 1669-1672页

作者： Ho-Hoi Luk Po-May Chan Fong-Fong Lam Kit-yu lau Sze-Yee Chiu yuet-ling Fung Janet Pang Department of Pharmacy Tung Wah Hospital Hong Kong China Department of General Out-patient Tung Wah Hospital Hong Kong China

Asthma and chronic obstructive airway disease ,（COAD） are chronic inflammatory disorders of the airways which are usually associated with widespread airway obstruction that is often relieved by treatment. β2-adrenoreceptor agonists and corticosteriods are the mainstay of the management of this disease. The preferred route of administration of these agents is by inhalation. This allows the drug to be delivered directly to the airway with more rapid relief and fewer side effects than systemic route. The main disadvantage of metered-dose inhaler （MDI） use is that the correct use requires good technique;

关键词： chronic obstructive airway disease metered-dose inhaler patient education

Prednisolone therapy accelerates recovery of severe drug-induced liver injury: A prospective, randomized controlled study

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iLIVER 2023年第3期2卷 156-162页

作者： Fang-Jiao Song Hong-ling Liu Ying Sun Tian-Jiao Xu Dong-Ze Li Hai-Bo Wang Shao-Jie Xin yu-Dong Wang Gregory Cheng George lau Sa Lv Shao-Li You Bing Zhu Senior Department of Hepatology Fifth Medical Center of Chinese PLA General HospitalBeijing 100005China Humanity and Health Clinical Trial Center Humanity&Health Medical GroupHong Kong SARChina Faculty of Health Science University of MacaoMacao SARChina

Background and aims:Drug-induced liver injury(DILI)is one of the most serious adverse drug reactions and its incidence has been increasing *** evidence suggests that immune activation and systemic inflammatory responses are very important in the progression of *** are often used in DILI,but their clinical usefulness remains *** therefore conducted a prospective,randomized controlled study to investigate whether corticosteroid therapy can accelerate recovery and reduce mortality in severe DILI(SDILI).Methods:SDILI patients with total bilirubin?171μmol/L who presented to the Fifth Medical Center of Chinese PLA General Hospital,Beijing from 2016 to 2019 were randomly allocated to prednisolone and control *** endpoints were resolution of SDILI,defined as a decrease in total bilirubin of at least 35μmol/L to<171μmol/L,and overall survival at 6 *** in the prednisolone group received prednisolone 60 mg/day therapy for the first 7 *** with a decrease in total bilirubin of more than 35μmol/L on day 8 continued on tapering doses of prednisolone;otherwise,prednisolone was ***:On day 8,50.75%(34/67)and 26.47%(18/68)of the participants in the prednisolone and control groups,respectively,achieved the primary endpoint(p¼0.002).However,there was no significant difference in overall survival at 6 months:95.52%(64/67)vs.91.18%(62/68)in the prednisolone and control groups,respectively(p¼0.3).All deaths in both groups occurred in patients who failed to achieve SDILI resolution on day ***:Prednisolone therapy may accelerate the recovery of SDILI.

关键词： Randomized study Severe drug-induced liver injury Hepatotoxicity Prednisolone Efficacy Accelerated recovery

Phenylketonuria in Hong Kong Chinese： a call for hyperphenylalaninemia newborn screening in the Special Administrative Region, China

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Chinese Medical Journal 2011年第16期124卷 2556-2558页

作者： Chloe Miu Mak Chun-hung Ko Ching-wan Lam Wai-ling lau Wai-kwan Siu Sammy Pak-lam Chen Chun-yiu Law Chi-kong Lai Chak-man yu Albert Yan-wo Chan Kowloon West Cluster Laboratory Genetic Service ChemicalPathology Laboratory Department of Pathology Princess MargaretHospital Hong Kong China Department of Paediatrics and Adolescent Medicine CaritasMedical Centre Hong Kong China Department of Pathology Li Ka Shing Faculty of Medicine TheUniversity of Hong Kong Hong Kong China

Hyperphenylalaninemia is one of the commonest inborn errors of metabolism affecting approximately 1 in 15 000 live births. Among Chinese, BH4 deficiency leading to hyperphenylalaninemia is much commoner than in Caucasians. Exact diagnosis is important for the treatment and genetic counseling. In 2000, newborn screening for phenylketonuria is mandatory by law in China throughout the whole country. However, it is not yet included in the newborn screening program of the Hong Kong Special Administrative Region, China. Published data on hyperphenylalaninemia among Hong Kong Chinese are largely lacking. We report a 1-year-old Hong Kong Chinese girl with severe 6-pyruvoyl-tetrahydropterin synthase （PTPS） deficiency. The patient presented with infantile hypotonia and was misdiagnosed as cerebral palsy. She had very mild hyperphenylalaninemia （95 IJmol/L）, significantly high phenylalnine-to-tyrosine ratio （3.1）, and ele~,ated prolactin of 1109 m lU/L. Genetic analysis confirmed a homozygous known disease-causing mutation PTS NM_000317.1： c.259C〉T; NP_000308.1： p.P87S in the proband. In our local experience, while the estimated prevalence of hyperphenylalaninemia due to PTPS deficiency was reported to be 1 in 29 542 live births, not a single case of phenylalanine hydroxylase deficiency has been reported. Furthermore, there is a general lack of awareness of inherited metabolic diseases in the community as well as among the medical professionals. Very often, a low index of clinical suspicion will lead to delay in diagnosis, multiple unnecessary and costly investigations, prolonged morbidity and anxiety to the family affected. We strongly recommend that expanded newborn screening for hyperphenylalaninemia should be implemented for every baby born in the Hong Kong Special Administrative Region, China.

关键词： Hong Kong Chinese hyperphenylalaninemia newborn screening phenylketonuria 6-pyruvoyl-tetrahydropterin synthase deficiency

A prospective study to evaluate the efficacy of an intracardiac electrogram-based atrioventricular and interventricular intervals optimization method in cardiac resynchronization therapy

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Chinese Medical Journal 2012年第3期125卷 428-433页

作者： Hua Wei Wang Dong-mei Cai Lin Sun Chao-feng Fu Guo-sheng Wang yu-tang Yan Ji Luo Zhi-ling Xu Jing Wang Zhi-yong Xu Geng Shen Fa-rong Xu Wei Wang Jing-feng Ren Xue-jun Jin Wei Zhang, Nan lau, Elizabeth Oi-Yan Zhang Shu Peking Union Med Coll Dept Cardiol Cardiovasc Inst Beijing 100037 Peoples R China Chinese Acad Med Sci Dept Cardiol Cardiovasc Inst Beijing 100037 Peoples R China Chinese Acad Med Sci Fuwai Hosp Beijing 100037 Peoples R China Shenyang No Hosp Dept Cardiol Shenyang 110000 Liaoning Peoples R China Chongqing Med Univ Dept Cardiol Peoples Hosp Chengdu 3 Med Coll Chengdu 2 Chengdu 610031 Sichuan Peoples R China Xi An Jiao Tong Univ Coll Med Dept Cardiol Affiliated Hosp 1 Xian 710061 Shaanxi Peoples R China Zhejiang Univ Sch Med Dept Cardiol Sir Run Run Shaw Hosp Hangzhou 310016 Zhejiang Peoples R China Chinese Peoples Liberat Army Gen Hosp Dept Cardiol Beijing 100853 Peoples R China Anhui Prov Hosp Dept Cardiol Hefei 230001 Anhui Peoples R China Kunming Med Coll Dept Cardiol Affiliated Hosp 1 Kunming 650032 Yunnan Peoples R China Tianjin Chest Hosp Dept Cardiol Tianjin 300051 Peoples R China Inner Mongolian Peoples Hosp Dept Cardiol Hohhot 010017 Inner Mongolia Mongol Peo Rep Zhejiang Univ Sch Med Dept Cardiol Affiliated Hosp 2 Hangzhou 310009 Zhejiang Peoples R China Zhejiang Hosp Dept Cardiol Hangzhou 310030 Zhejiang Peoples R China Nanjing Univ Sch Med Dept Cardiol Affiliated Drum Tower Hosp Nanjing 210008 Jiangsu Peoples R China Sun Yat Sen Univ Dept Cardiol Sun Yat Sun Mem Hosp Guangzhou 510120 Guangdong Peoples R China Capital Med Univ Dept Cardiol Beijing Anzhen Hosp Beijing 100029 Peoples R China Beijing Inst Heart Lung & Blood Vessel Dis Beijing 100029 Peoples R China Shanghai Jiao Tong Univ Sch Med Dept Cardiol Shanghai Peoples Hosp 1 Shanghai 200080 Peoples R China

Background Cardiac resynchronization therapy （CRT） with biventricular pacing improves cardiac function,functional capacity and quality of life in selected patients with heart *** current study aimed to evaluate the efficacy of the intracardiac electrogram （IEGM）-based optimization method,QuickOptTM,in Chinese patients treated with *** Aortic time velocity integrals （AVTI） achieved at the sensed atrioventricular （AV）,paced AV and interventricular （VV） interval settings recommended by both QuickOptTM and standard echocardiographic optimization were measured in 101 *** and the strength of the relationship between the two timing cycle optimization methods were assessed by intra-class correlation coefficient （ICC）.Results The ICC showed good agreement and correlation with what the AVTI achieved at the optimal sensed AV （ICC=0.9683 （0.9535-0.9785））,paced AV （ICC=0.9642 （0.9475-0.9757）） and VV （ICC=0.9730 （0.9602-0.9817）） interval settings determined by the two optimization *** average time required by echocardiographic optimization and by QuickOptTM were （78.32±32.40） minutes and （1.98±1.64） minutes respectively （P 〈0.0001）.Conclusion The QuickOptTM algorithm provides a quicker,simpler and reliable alternative to the standard method for timing cycle optimization.（*** Reference Number：NCT00918294）

关键词： heart failure cardiac resynchronization therapy atrioventricular interval interventricular interval timing cycle optimization echocardiography aortic velocity time integral intracardiac electrogram QuickOptTM

体外诱导成年大鼠骨髓间充质干细胞分化为5-羟色胺敏感性神经元

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细胞生物学杂志 2006年第5期28卷 726-730页

作者：舒畅李廷玉黄巧茵刘妙贞曾丽玲朱虎苟毓林钟耀华陈小章重庆医科大学附属儿童医院重庆400014 香港中文大学生理系上皮细胞研究中心

体外诱导成年大鼠骨髓间充质干细胞分化为具有神经元表型和部分功能的细胞。在对Woodbury化学诱导法作改良的基础上,加用全反式视黄酸对骨髓间充质干细胞作预诱导。诱导3h后,细胞开始表现神经元的形态特征,细胞折光性增强,形成收缩的双... 详细信息

体外诱导成年大鼠骨髓间充质干细胞分化为具有神经元表型和部分功能的细胞。在对Woodbury化学诱导法作改良的基础上,加用全反式视黄酸对骨髓间充质干细胞作预诱导。诱导3h后,细胞开始表现神经元的形态特征,细胞折光性增强,形成收缩的双极或多极胞体和细长突起。细胞可以维持神经元样存活72h以上。诱导5h后,对免疫染色的细胞用DAPI进行复染,(92.4±6.9)%的细胞表达神经元特异性烯醇化酶。诱导24h后,(93.9±5.2)%的细胞表达成熟神经元的标志物神经丝M+H。在给予5-羟色胺刺激时可以产生与神经元相似的胞内钙离子峰,且免疫组化证实5-羟色胺1A受体在干细胞上表达微弱,但在分化后的神经元中表达较强。实验不仅从形态、细胞标志物而且从功能上证实诱导后的细胞为5-羟色胺敏感性神经元。

关键词：分化 5-羟色胺钙离子骨髓间充质干细胞神经元

基于独立成分分析的马里亚纳弧后地幔源区特征研究

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海洋科学进展 2021年第1期39卷 73-88页

作者：于璐瑶田丽艳伍锡昌孙国洪陈凌轩中国科学院深海科学与工程研究所海南三亚572000 中国科学院大学北京100049 青岛海洋科学与技术试点国家实验室海洋地质过程与环境功能实验室山东青岛266003 吉林大学地球科学学院吉林长春130012 自然资源部第二海洋研究所浙江杭州310012

对采自太平洋洋中脊(277组)、印度洋洋中脊(159组)、马里亚纳海槽(53组)、马里亚纳岛弧(39组)、中南劳海盆(72组)共600组玄武岩数据进行了独立成分分析,从Sr-Nd-Pb五维同位素比值空间提取出占样本方差99%的3个独立成分(IC1,IC2,IC3),并... 详细信息

对采自太平洋洋中脊(277组)、印度洋洋中脊(159组)、马里亚纳海槽(53组)、马里亚纳岛弧(39组)、中南劳海盆(72组)共600组玄武岩数据进行了独立成分分析,从Sr-Nd-Pb五维同位素比值空间提取出占样本方差99%的3个独立成分(IC1,IC2,IC3),并利用这3个独立成分(ICs)与微量元素比值之间的相关性来讨论独立成分的起源。分析结果表明:IC1可以将马里亚纳海槽玄武岩与太平洋洋中脊及马里亚纳岛弧玄武岩区分,并且IC1值与(La/Sm)N比值呈正相关。IC2可以将马里亚纳海槽和马里亚纳岛弧玄武岩区分,而且IC2值与Ba/Th比值呈正相关;IC3可以将弧后盆地和洋中脊玄武岩区分,同时IC3值与Th/Nb呈负相关。分析独立成分的统计特征和微量元素比值特征可知,IC1与印度洋型MORB地幔的富集组分相关,IC2与太平洋板块俯冲产生的含水流体相关,IC3与再循环俯冲沉积物熔体相关。根据ICs地理分布特点,我们认为:1)马里亚纳海槽北部比南部受到更多印度洋型MORB地幔富集组分的影响,表明印度洋型MORB地幔可能从北部置换太平洋型MORB地幔;2)海槽北部地幔源区则是受到再循环沉积物熔体的影响较大,而中部和南部地幔源区可能受到更多俯冲流体的影响。

关键词：独立成分分析(ICA) 马里亚纳海槽 Sr-Nd-Pb同位素比值俯冲作用印度洋型MORB地幔