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Applying image clustering to phylogenetic analysis:A trial

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Plant Diversity 2023年第2期45卷 234-237页

作者： Li-Dan Tao Wei-bang sun Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China University of Chinese Academy of Sciences 100049 BeijingChina Kunming Botanical Garden Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China

Phylogenetic studies have increased in recent years,largely due to rapid developments in sequencing techniques (Tucker et al.,2017).However,molecular phylogenetic studies rely on collecting biomaterials,which limits t... 详细信息

关键词： image biomaterials limits

Abdominal compartment syndrome in patients with severe acute pancreatitis in early stage

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World Journal of Gastroenterology 2008年第22期14卷 3541-3548页

作者： Hong Chen Fei Li Jia-bang sun Jian-Guo Jia Department of General Surgery Xuan Wu Hospital of Capital Medical University Beijing 100053 China

AIM: To study retrospectively the influence of intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) in patients with early acute pancreatitis (AP) (during the first week after admission) on physiological functions, and the association of the presence of IAH/ACS and outcome. METHODS: Patients (n = 74) with AP recruited in this study were divided into two groups according to intra-abdominal pressure (IAP) determined by indirect measurement using the transvesical route via Foley bladder catheter during the first week after admission. Patients (n = 44) with IAP ≥ 12 mmHg were assigned in IAH group, and the remaining patients (n = 30) with IAP < 12 mmHg in normal IAP group. For analysis of the influence of IAH/ACS on organ function and outcome, the physiological parameters and the occurrence of organ dysfunction during intensive care unit (ICU) stay were recorded, as were the incidences of pancreatic infection and in-hospital mortality. RESULTS: IAH within the first week after admission was found in 44 patients (59.46%). Although the APACHE Ⅱ scores on admission and the Ranson scores within 48 h after hospitalization were elevated in IAH patients in early stage, they did not show the statistically significant differences from patients with normal IAP within a week after admission (16.18 ± 3.90 vs 15.70 ± 4.25, P = 0.616; 3.70 ± 0.93 vs 3.47 ± 0.94, P = 0.285, respectively). ACS in early AP was recorded in 20 patients (27.03%). During any 24-h period ofthe first week after admission, the recorded mean IAP correlated significantly with the Marshall score calculated at the same time interval in IAH group (r = 0.635, P < 0.001). Although ACS patients had obvious amelioration in physiological variables within 24 h after decompression, the incidences of pancreatitic infection, septic shock, multiple organ dysfunction syndrome (MODS) and death in the patients with ACS were significantly higher than that in other patients without ACS (pancreatitic infectio

关键词： Acute pancreatitis Abdominal compartment syndrome Intra-abdominal pressure Intra-abdominal hypertension Organ dysfunction

Severe acute pancreatitis in the elderly: Etiology and clinical characteristics

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World Journal of Gastroenterology 2008年第16期14卷 2517-2521页

作者： Ming-Jun Xin Hong Chen Bin Luo Jia-bang sun Department of General Surgery Xuanwu Hospital Capital Medical University Beijing 100053 China

AIM: To investigate the etiology and clinical characteristics of severe acute pancreatitis (SAP) in elderly patients (≥ 60 years of age). METHODS: We reviewed retrospectively all the SAP cases treated in Xuanwu Hospital in Beijing between 2000 and 2007. RESULTS: In 169 patients with SAP, 94 were elderly and 16 died. Biliary and idiopathic etiologies were the first two causes that accounted for over 90% of SAP in the elderly. Biliary, hyperlipemic and alcoholic etiologies were the first three causes in the young. The proportion of co- morbidity of cholelithiasis, biliary infection, hypertension and coronary heart disease in the aged was significantly higher than that in their young partners. The scores of APACHE Ⅱ and Ranson were also significantly higher in the elderly except the CT score. Organ failures were more common in the elderly, but the local pancreatic complications were not different between the two groups. Mortality of the aged was correlated with the severity of SAP, multiple co-morbidity and incidence of multiple organ dysfunction syndrome (MODS). MODS was the main cause of death. CONCLUSION: The etiology of SAP in the elderly is quite different from that in the young. Biliary and unknown factors are main causes in the aged. The elderly are subject to major organ failures but there is no difference in the occurrence of local pancreatic complications between the elderly and the young. It is crucial to monitor and improve the functions of major organs so as to prevent MODS in the aged with SAP.

关键词： Severe acute pancreatitis Elderly Etiology Mortality Complication

Genetic diversity and population structure of Hibiscus aridicola, an endangered ornamental species in dry-hot valleys of Jinsha River

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Plant Diversity 2019年第5期41卷 300-306页

作者： Xin Zhang Le Zhang Johann Schinnerl Wei-bang sun Gao Chen Yunnan Forestry Technological College Kunming650224China Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations Kunming650204China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming650204China Chemodiversity Research Group Division of Systematic and Evolutionary BotanyUniversity of ViennaRennweg 14A-W30ViennaAustria

Hibiscus aridicola is an endangered ornamental shrub of the family Malvaceae that is endemic to the dryhot valleys of Jinsha River in southwestern *** species is a typical plant species with extremely small populations(PSESP).To support and monitor future conservation,develop management measures,and genotype this species,we performed extensive field studies together with genetic ***,we screened eleven microsatellite loci of 69 individuals of *** from four *** population genetics analyses indicated that *** possesses high genetic diversity at both the population(0.6962-0.7293)and species level(0.7837)compared to other endemic/endangered species in *** low differentiation of populations(Fst=0.0971)and the high gene flow between populations of ***(Nm=2.3236)could be due to its distribution along rivers in the hot-valleys of the Jinsha River and the wind-mediated dispersal of its ***,the genetic diversity of *** is slightly positively correlated with geographic *** populations are undergoing a genetic bottleneck,and require more specific attention from ***,our analyses of the population genetics of *** demonstrate that the declines in populations are not the result of the internal genetics of these populations but due to external human activities over the past decades.

关键词： Malvaceae Hibiscus aridicola Population genetics Conservation Endemic species PSESP

Hyperlipidemia intensifies cerulein-induced acute pancreatitis associated with activation of protein kinase C in rats

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World Journal of Gastroenterology 2006年第18期12卷 2908-2913页

作者： Ya-Jun Wang Jia-bang sun Fei Li Shu-Wen Zhang Department of General Surgery Xuanwu Hospital of Capital University of Medical Sciences Beijing 100053 China

AIM： To investigate the effects of hyperlipidemia on acute pancreatitis （AP） and the possible mechanisms. METHODS： Rat models of hyperlipidemia and AP were established by Triton WR1339 and cerulein respectively. Human albumin was used to treat AP complicated by hyperlipidemia. In each group, we compared the histological score, volume of ascites, ratio of pancreatic wet/dry weight, serum amylase （AMY） and pancreatic acinar cell apoptosis. The level of protein kinase C （PKC） membrane translocation in pancreatic tissue was detected by Western blot.RESULTS： In the hyperlipidemia model established by Triton WR1339, triglyceride （TG） increased remarkably and reached its peak 6 h after injection, and most rats developed mild acute pancreatitis. Histological score, volume of ascites, ratio of wet/dry weight and serum AMY in AP animals with hyperlipidemia were obviously higher than those in AP animals （P 〈 0.05） and decreased after albumin therapy but not significantly （P 〉 0.05）. Apoptotic cells detected by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling （TUNEL） increased in AP animals with hyperlipidemia and did not change distinctly after albumin therapy. PKC membrane translocation level increased in AP animals with hyperlipidemia and decreased remarkably after albumin therapy （P 〈 0.05）.CONCLUSION： Hyperlipidemia may induce AP or intensify pancreatic injury. Albumin therapy can not alleviate pancreatic lesion effectively. PKC activation may be one mechanism by which AP is intensified by hyperlipidemia.

关键词： Acute pancreatitis Hyperlipidemia Protein kinase C

Alterations of intestinal immune function and regulatory effects of L-arginine in experimental severe acute pancreatitis rats

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World Journal of Gastroenterology 2005年第39期11卷 6216-6218页

作者： Shi-Feng Qiao Tian-Jing LUE Jia-bang sun Fei Li Department of General Surgery Beijing Shijitan Hospital Beijing 100038 China Department of Immunology Institute of Urology Peking University Beijing 100034 China Department of General Surgery Xuanwu Hospital of Capital University of Medical Sciences Beijing 100053 China

AIM： To discuss the changes of intestinal mucosal immune function in rats with experimental severe acute pancreatitis （SAP） and the regulatory effect of L-arginine. METHODS： Male adult Wistar rats were randomly divided into pancreatitis group, sham-operation group, and L-arginine treatment group. Animals were killed at 24, 48, and 72 h after SAP models were developed and specimens were harvested. Endotoxin concentration in portal vein was determined by limulus endotoxin analysis kit. CD3＋, CD4＋, CD8＋ T lymphoo/tes in intestinal mucosal lamina propria were examined by immunohistochemistry. Secretory immunoglobulin A （SIgA） in cecum feces was examined by radioimmunoassay. RESULTS： Compared to the control group, plasma endotoxin concentration in the portal vein increased, percentage of CD3＋ and CD4＋ T lymphocyte subsets in the end of intestinal mucosal lamina propria reduced significantly, CD4＋/CD8＋ ratio decreased, and SIgA concentrations in cecum feces reduced at 24, 48, and 72 h after SAP developed. Compared to SAP group, the L-arginine treatment group had a lower level of plasma endotoxin concentration in the portal vein, a higher CD3＋ and CD4＋ T lymphocyte percentage in the end of intestinal mucosal lamina propria, an increased ratio of CD4＋/CD8＋ and a higher SIgA concentration in cecum feces. CONCLUSION： Intestinal immune suppression occurs in the early stage of SAP rats, which may be the main reason for bacterial and endotoxin translocation. L-arginine can improve the intestinal immunity and reduce bacterial and endotoxin translocation in SAP rats.

关键词： Acute pancreatitis Immunity Intestinal mucosa L-arginine

Triarylborane π-electron systems with intramolecular charge-transfer transitions

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Chinese Chemical Letters 2016年第8期27卷 1131-1138,1464页

作者： Zuo-bang sun Sheng-Yong Li Zhi-Qiang Liu Cui-Hua Zhao School of Chemistry and Chemical Engineering Key Laboratory of Special Functional Aggregated Materials Ministry of EducationShandong University State Key Laboratory of Crystal Materials Shandong University

The incorporation of B element into π-conjugated system is an efficient strategy to tune the steric and electronic structure and thus optoelectronic properties of π-electron *** vacant p orbital on the tricoordinate B center makes it exhibit several electronic and steric features,such as electron-accepting ability through p-π~＊ conjugation,the high Lewis acidity to coordinate with Lewis bases,as well as the steric bulk arising from the aryl substituent on the B center to get enough kinetic *** a result,the boryl group is a very unique electron *** an electron-donating amino group is present,the triarylboranes would display intense intramolecular charge transfer transitions,which lead to interesting optoelectronic properties and great *** short review summarizes the recent progress in π-electron systems,which contain both B and N elements and thus display intramolecular charge-transfer *** triarylboranes are introduced based on their structural features,including the linear π-system with boryl and amino groups at the terminal positions,the lateral borylsubstituted π-system with amino groups at the terminal positions,the biphenyl π-system with an amino and a boryl groups at o,o＇-positions,nonconjugated U- and V-shaped π-system,macrocylcic π-system with B and N embedded in the ring,B,N-bridged ladder-type π-system,as well as the polycyclicπ-system with B embedded in the center.

关键词： Triarylborane Electron-acceptor Electron-donor Charge-transfer

Conservation and fruit biology of Sichou oak {Quercus sichourensis,Fagaceae)- A critically endangered species in China

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Plant Diversity 2016年第5期38卷 233-237页

作者： Ke Xia Lei Fan Wei-bang sun Wen-yun Chen Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of Sciences Kunming Botanical Garden Kunming Institute of BotanyChinese Academy of Sciences Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of Sciences

Several conservation programs have been started for the critically endangered Sichou oak(Quercus sichourensis) since *** programs include detailed field investigations,seedling cultivation and research on the fruit biology of the *** this study,we first report on the five mature individual trees found in our 9-year field *** far,a total of 10 mature individuals have been *** *** trees are healthy and most produce healthy *** of *** are large with dry masses of 8.0-14.0 *** acorns had high moisture contents at collection and died shortly after(7-28 d) when dried with silica *** of Q,sichourensis acorns varied between *** with the acorns from Funing,the acorns collected from Ceheng were bigger,more viable(germination percentage was up to 96%),less sensitive to desiccation,and germinated *** occurs in regions with a distinct 5-6 month dry *** degradation is largely responsible for the rareness of Quercus sichorensis,but desiccation sensitivity of the acorns may also limit the regeneration of the species and potentially lead to its continued *** a species with extremely small populations(PSESP),*** is facing high risk of extinction and should be defined as a Critically Endangered species in the global IUCN Red List.

关键词： Conservation Cyclobalanopsis sichourensis Recalcitrant seed Desiccation-sensitive Germination Asian monsoon system

Seed dispersal by hornets:An unusual insect-plant mutualism

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Journal of Integrative Plant Biology 2017年第11期59卷 792-796页

作者： gao chen zheng-wei wang yan qin wei-bang sun kunming botanical garden kunming institute of botanychinese academy of sciencesKunming 650204China key laboratory for plant diversity and biogeography of east asia kunming institute of botanychinese academy of sciencesKunming 650204China chemi-ecology group of key laboratory of tropical forest ecology xishuangbanna tropical botanical gardenchinese academy of sciencesKunming 650201China school of life sciences yunnan universityKunming 650200China

Vespicochory, seed dispersal by hornets, is a rare seed dispersal mechanism in angiosperms and, to date, there are few records of this *** field investigations and behavioral assays conducted in four populations of Stemona tuberosa from 2011–2016, we demonstrate that hornets are the primary seed dispersers of S. tuberosa and play an important role in "long-distance" seed dispersal in this species. Furthermore, some ant species act as secondary dispersers and may transport the seeds to safe *** and ants provide complementary seed dispersal at different spatial scales. This unique example of insect-plant mutualism may be an underestimated but important strategy to ensure "long-distance" seed dispersal in other myrmecochorous plants.

关键词： Seed dispersal by hornets An unusuainsect-plant mutualism