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| 1 | Hepatic hemangioma:What internists need to know显示文摘Hepatic hemangioma(HH)is the most common benign liver tumor and it is usually found incidentally during radiological studies.This tumor arises from a vascular malformation;however,the pathophysiology has not been clearly elucidated.Symptoms usually correlate with the size and location of the tumor.Less commonly the presence of a large HH may cause life-threatening conditions.The diagnosis can be established by the identification of HH hallmarks in several imaging studies.In patients that present with abdominal symptoms other etiologies should be excluded first before attributing HH as the cause.In asymptomatic patient’s treatment is not required and follow up is usually reserved for HH of more than 5 cm.Symptomatic patients can be managed surgically or with other non-surgical modalities such as transcatheter arterial embolization or radiofrequency ablation.Enucleation surgery has shown to have fewer complications as compared to hepatectomy or other surgical techniques.Progression of the tumor is seen in less than 40%.Hormone stimulation may play a role in HH growth;however,there are no contraindications for hormonal therapy in patients with HH due to the lack of concrete evidence.When clinicians encounter this condition,they should discern between observation and surgical or non-surgical management based on the clinical presentation. | Monica Leon Luis Chavez Salim Surani | 2020 | World Journal of Gastroenterology2020，26，1： | 13 |
| 2 | Abdominal compartment syndrome among surgical patients显示文摘Abdominal compartment syndrome(ACS)develops when organ failure arises secondary to an increase in intraabdominal pressure.The abdominal pressure is determined by multiple factors such as blood pressure,abdominal compliance,and other factors that exert a constant pressure within the abdominal cavity.Several conditions in the critically ill may increase abdominal pressure compromising organ perfusion that may lead to renal and respiratory dysfunction.Among surgical and trauma patients,aggressive fluid resuscitation is the most commonly reported risk factor to develop ACS.Other conditions that have also been identified as risk factors are ascites,hemoperitoneum,bowel distention,and large tumors.All patients with abdominal trauma possess a higher risk of developing intra-abdominal hypertension(IAH).Certain surgical interventions are reported to have a higher risk to develop IAH such as damage control surgery,abdominal aortic aneurysm repair,and liver transplantation among others.Close monitoring of organ function and intra-abdominal pressure(IAP)allows clinicians to diagnose ACS rapidly and intervene with target-specific management to reduce IAP.Surgical decompression followed by temporary abdominal closure should be considered in all patients with signs of organ dysfunction.There is still a great need for more studies to determine the adequate timing for interventions to improve patient outcomes. | Monica Leon Luis Chavez Salim Surani | 2021 | World Journal of Gastrointestinal Surgery2021，13，4： | 7 |
| 3 | Abnormal liver enzymes: A review for clinicians显示文摘Liver biochemical tests are some of the most commonly ordered routine tests in the inpatient and outpatient setting,especially with the automatization of testing in this technological era.These tests include aminotransferases,alkaline phosphatase,gamma-glutamyl transferase,bilirubin,albumin,prothrombin time and international normalized ratio(INR).Abnormal liver biochemical tests can be categorized based on the pattern and the magnitude of aminotransferases elevation.Generally,abnormalities in aminotransferases can be classified into a hepatocellular pattern or cholestatic pattern and can be further sub-classified based on the magnitude of aminotransferase elevation to mild[<5×upper limit of normal(ULN)],moderate(>5-<15×ULN)and severe(>15×ULN).Hepatocellular pattern causes include but are not limited to;non-alcoholic fatty liver disease/non-alcoholic steatohepatitis,alcohol use,chronic viral hepatitis,liver cirrhosis(variable),autoimmune hepatitis,hemochromatosis,Wilson’s disease,alpha-1 antitrypsin deficiency,celiac disease,medication-induced and ischemic hepatitis.Cholestatic pattern causes include but is not limited to;biliary pathology(obstruction,autoimmune),other conditions with hyperbilirubinemia(conjugated and unconjugated).It is crucial to interpret these commonly ordered tests accurately as appropriate further workup,treatment and referral can greatly benefit the patient due to prompt treatment which can improve the natural history of several of the diseases mentioned and possibly reduce the risk of progression to the liver cirrhosis. | M Ammar Kalas Luis Chavez Monica Leon Pahnwat Tonya Taweesedt Salim Surani | 2021 | World Journal of Hepatology2021，13，11： | 5 |
| 4 | GS-9620, an Oral Agonist of Toll-Like Receptor-7, Induces Prolonged Suppression of Hepatitis B Virus in Chronically Infected Chimpanzees显示文摘 | Robert E. Lanford Bernadette Guerra Deborah Chavez Luis Giavedoni Vida L. Hodara Kathleen M. Brasky Abigail Fosdick Christian R. Frey Jim Zheng Grushenka Wolfgang Randall L. Halcomb Daniel B. Tumas | 2013 | Gastroenterology2013，，7： | 5 |
| 5 | Upper esophageal sphincter abnormalities are strongly predictive of treatment response in patients with achalasia显示文摘AIM: To investigate the relationship between upper esophageal sphincter abnormalities achalasia treatment METHODS: We performed a retrospective study of 41 consecutive patients referred for high resolution esophageal manometry with a final manometric diagnosis of achalasia. Patients were sub-divided by presence or absence of Upper esophageal sphincter(UES) abnormality, and clinical and manometric profiles were compared.Correlation between UES abnormality and sub-type(i.e.,hypertensive, hypotensive or impaired relaxation) and a number of variables, including qualitative treatment response, achalasia sub-type, co-morbid medical illness,psychiatric illness, surgical history, dominant presentingsymptom, treatment type, age and gender were also evaluated.RESULTS: Among all 41 patients, 24(58.54%) had a UES abnormality present. There were no significant differences between the groups in terms of age, gender or any other clinical or demographic profiles. Among those with UES abnormalities, the majority were either hypertensive(41.67%) or had impaired relaxation(37.5%) as compared to hypotensive(20.83%), although this did not reach statistical significance(P = 0.42). There was no specific association between treatment response and treatment type received; however, there was a significant association between UES abnormalities and treatment response. In patients with achalasia and concomitant UES abnormalities, 87.5% had poor treatment response, while only 12.5% had favorable response. In contrast, in patients with achalasia and no UES abnormalities, the majority(78.57%) had good treatment response, as compared to 21.43% with poor treatment response(P = 0.0001). After controlling for achalasia sub-type, those with UES abnormality had 26 times greater odds of poor treatment response than those with no UES abnormality(P = 0.009). Similarly, after controlling for treatment type, those with UES abnormality had 13.9 times greater odds of poor treatment response compared to those with no UES abnormality(P = 0.017).CONCLUSION: The presence of UES abnormalities in patients with achalasia significantly predicted poorer treatment response as compared to those with normal UES function. | Simon C Mathews Maria Ciarleglio Yamile Haito Chavez John O Clarke Ellen Stein Bani Chander Roland | 2014 | World Journal of Clinical Cases2014，2，9： | 5 |
| 6 | Complex networks: Structure and dynamics显示文摘 | S. Boccaletti V. Latora Y. Moreno M. Chavez D.-U. Hwang | 2006 | Physics Reports2006，，4： | 3 |
| 7 | Paclobutrazol and Its Use in Fruit Production:A Review显示文摘There are documentary records referring to paclobutrazol(PBZ)as a growth bioregulator that inhibits the gibberellin synthesis and its application increases yields in fruit and vegetable crop productions.Its agronomic management includes it as an emerging technology to reduce vigour,promote flower induction and flower development in fruit trees with increased economic returns.Its use is banned in some countries because of concerns about residues that can cause harmful effects on the environment.Therefore,the aim of this article was to collect,analyse and summarise relevant information on the use of PBZ in fruit tree production and its possible risks to the environment.The results obtained indicated that the application of PBZ can be effective in solving some problems related to flowering if it is applied in the right amount and at the right time.However,it is necessary to elucidate the physiological processes with which it is associated and its response to be taken into account to increase yield.PBZ is currently used in fruit trees such as mango,lime,apple and guava,increasing their productivity.However,some studies have shown its residual effect on the environment.Therefore,PBZ is a viable strategy,because it presents a series of advantages in the production of fruit trees.However,it is vital to generate protocols that seek its regulation with a rational and sustainable approach. | Laura Raquel Orozco-Meléndez Ofelia Adriana Hernández-Rodríguez Oscar Cruz-Álvarez Loreto Robles-Hernández Graciela Dolores Avila-Quezada Esteban Sánchez Chavez DamiánAarón Porras-Flores Dámaris Leopoldina Ojeda-Barrios | 2022 | Phyton-International Journal of Experimental Botany2022，91，1： | 2 |
| 8 | Response of glutamine synthetase isoforms to nitrogen sources in rice ( Oryza sativa L.) roots显示文摘 | Chufu Zhang Shaobing Peng Xinxiang Peng Arlene Q. Chavez John Bennett | 1997 | Plant Science1997，，2： | 2 |
| 9 | Simplified three-dimensional culture system for long-term expansion of embryonic stem cells显示文摘AIM: To devise a simplified and efficient method for long-term culture and maintenance of embryonic stem cells requiring less frequent passaging. METHODS: Mouse embryonic stem cells(ESCs) labeled with enhanced yellow fluorescent protein were cultured in three-dimensional(3-D) self-assembling scaffolds and compared with traditional two-dimentional(2-D) culture techniques requiring mouse embryonic fibroblast feeder layers or leukemia inhibitory factor. 3-D scaffolds encapsulating ESCs were prepared by mixing ESCs with polyethylene glycol tetra-acrylate(PEG-4-Acr) and thiolfunctionalized dextran(Dex-SH). Distribution of ESCs in 3-D was monitored by confocal microscopy. Viability and proliferation of encapsulated cells during long-term culture were determined by propidium iodide as well as direct cell counts and PrestoB lue(PB) assays. Genetic expression of pluripotency markers(Oct4, Nanog, Klf4, and Sox2) in ESCs grown under 2-D and 3-D cultureconditions was examined by quantitative real-time polymerase chain reaction. Protein expression of selected stemness markers was determined by two different methods, immunofluorescence staining(Oct4 and Nanog) and western blot analysis(Oct4, Nanog, and Klf4). Pluripotency of 3-D scaffold grown ESCs was analyzed by in vivo teratoma assay and in vitro differentiation via embryoid bodies into cells of all three germ layers. RESULTS: Self-assembling scaffolds encapsulating ESCs for 3-D culture without the loss of cell viability were prepared by mixing PEG-4-Acr and Dex-SH(1:1 v/v) to a final concentration of 5%(w/v). Scaffold integrity was dependent on the degree of thiol substitution of Dex-SH and cell concentration. Scaffolds prepared using Dex-SH with 7.5% and 33% thiol substitution and incubated in culture medium maintained their integrity for 11 and 13 d without cells and 22 ± 5 d and 37 ± 5 d with cells, respectively. ESCs formed compact colonies, which progressively increased in size over time due to cell proliferation as determined by confocal microscopy and PB staining. 3-D scaffold cultured ESCs expressed significantly higher levels(P < 0.01) of Oct4, Nanog, and Kl4, showing a 2.8, 3.0 and 1.8 fold increase, respectively, in comparison to 2-D grown cells. A similar increase in the protein expression levels of Oct4, Nanog, and Klf4 was observed in 3-D grown ESCs. However, when 3-D cultured ESCs were subsequently passaged in 2-D culture conditions, the level of these pluripotent markers was reduced to normal levels. 3-D grown ESCs produced teratomas and yielded cells of all three germ layers, expressing brachyury(mesoderm), NCAM(ectoderm), and GATA4(endoderm) markers. Furthermore, these cells differentiated into osteogenic, chondrogenic, myogenic, and neural lineages expressing Col1, Col2, Myog, and Nestin, respectively. CONCLUSION: This novel 3-D culture system demonstrated long-term maintenance of mouse ESCs without the routine passaging and manipulation necessary for traditional 2-D cell propagation. | Christina McKee Mick Perez-Cruet Ferman Chavez G Rasul Chaudhry | 2015 | World Journal of Stem Cells2015，7，7： | 2 |
| 10 | Properties of Chemical Bath Deposited PbS Thin Films Doped with Cd2+显示文摘 | Oscar Portillo Moreno Melissa Chavez Portillo Miriam Moreno Flores Javier Martinez Juarez Gustavo Abarca Avila Rosendo Lozada Morales Orlando Zelaya Angel | 2011 | 材料科学与工程(中英文A版)2011，1，6： | 2 |
| 11 | Safety of Green Tea Extracts: A Systematic Review by the US Pharmacopeia显示文摘 | Sarma Dandapantula N Barrett Marilyn L Chavez Mary L Gardiner Paula Ko Richard Mahady Gail B Marles Robin J Pellicore Linda S Giancaspro Gabriel I Dog Tieraona Low | 2008 | Drug Safety2008，，6： | 2 |
| 12 | Reduced mitochondrial respiration in mouse cerebral cortex during chronic hypoxia显示文摘 | Chavez J C Pichiule P Boero J | 1995 | Neurosci Lett1995，193，3： | 2 |
| 13 | 用PDE-5抑制剂治疗勃起功能障碍的男性患者中前列腺癌的发生率:回顾性研究显示文摘本研究比较了用PDE-5抑制剂治疗勃起功能障碍(ED)7年的男性患者和与这些患者年龄及各种风险因素相似的7年内不使用PDE一5抑制剂治疗ED的男性患者中前列腺癌发生率的情况。通过分析2000年到2006年的电子病例和数据库,以年龄在50至69岁,2000年前无前列腺癌病史的ED患者作为研究对象。这些患者被分为两组:2362名曾用PDE-5抑制剂治疗的男性和2612名不曾使用过该药物的男性。比较每组的人口数据。在研究期内:97名(4.1%)接受过PDE-5抑制剂治疗的ED患者被诊断出患了前列腺癌,在非PDE-5抑制剂治疗组中,258名(9.9%)被诊断出患了前列腺癌(P〈O.0001)。在非洲裔美国人中,接受PDE-5抑制剂治疗的比例比不用的比例高(10.5%VS.7.1%,P〈0.0001)。接受过PDE-5治疗的患者,其前列腺特异性抗原增高的比例比较低(10.0%vs.13.1%,P=0.0008),但良性前列腺增生的比例比较高(38.4%vs.35.1%,P=0.0149)。接受PDE-5抑制剂治疗ED的男性不易患前列腺癌(调整后的优势比为0.4,95%CI:0.3—0.5,P〈0.0001)。我们的研究数据表明:用PDE-5抑制剂治疗ED的男性倾向于不易患前列腺癌。还需要进行更多的研究。 | Anthony H Chavez K Scott Coffield M Hasan Rajab Chanhee Joe | 2013 | Asian Journal of Andrology2013，15，2： | 2 |
| 14 | Comparison of modified Thrombelastograph and Plateletworks whole blood assays to optical p latelet aggregation for monitoring reversal of clop idogrel inhibition in elective surgery patients 显示文摘 | Craft RM Chavez JJ Snider CC | 2005 | J Lab Clin Med2005，145，6： | 1 |
| 15 | Extraction of a monospecific Coombs-reagent from chicken eggs 显示文摘 | Gutierrez Calzado E Cruz Mario E Samon Chavez T | 2003 | ALTEX2003，20，1： | 1 |
| 16 | Changes in the epidemiolngic profile of sudden infant death syndrome as rates decline among California infants:1990-1995显示文摘 | Adams E J Chavez G F Steen D | 1998 | Pediatrics1998，102，6： | 1 |
| 17 | Activation of hypoxia-inducible factor-1 in the rat cerebral cortex after transient global ischemia:potential role of insulin-like growth factor-1显示文摘 | Chavez JC LaManna JC | 2002 | J Neurosci 20022002，22，20： | 1 |
| 18 | Statistical method for selecting Landsat MSS ratios显示文摘 | CHAVEZ PS BERLIN GL SOWER LB | 1982 | Journal of Applied Photographic Engineering1982，8，1： | 1 |
| 19 | Contact investigations as a means of detection and timely treatment of persons with with infectious muhidmgresistant tuberculosis 显示文摘 | Bayona J Chavez - Pachas AM Palacios E | 2003 | Int J Tuberc Lung Dis2003，7，3： | 1 |
| 20 | Determination of IgG subclasses and avidity of antithyroid peroxidase antibodies in patients with subclinical hypothyroidism-a comparison with patients with overt hypothyroidism显示文摘 | Silva L M Chavez J Canalli M H | 2003 | Horm Res2003，59，3： | 1 |
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