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lessons from the past:isotopes of an endangered rail as indicators of underlying change to tidal marsh habitats

Ecosystem Health and Sustainability 2017年第11期3卷 15-30页

作者： Angela M Merritt michael l casazza Cory T Overton John Y Takekawa Thomas P Hahn Joshua M Hull u.s.geological survey western ecological research center dixon field office dixoncausa department of animal science university of california davisdaviscausa

Introduction:Tidal marsh systems along the Pacific coast of the United States have experienced substantial stress and loss of area and ecosystem function,which we examined by using the endangered California Ridgway’s Rail,Rallus obsoletus obsoletus(‘rail’)as an indicator of its tidal marsh habitat in the San Francisco *** organized a collection of historical(1885-1940)and modern(2005-2014)rail feathers and analyzed the feather isotope means for delta carbon(δ^(13)C),sulfur(δ^(34)S),and nitrogen(δ^(15)N)by region and time ***:Feather isotopes represented the primary foraging habitat during historical then modern time *** individual nor regional rail feather isotopes suggested freshwater or terrestrial foraging by the *** regions with both historic and modern feather isotopes revealed non-uniform spatial shifts in isotope levels consistent with a marine based food web and significantδ^(15)N ***:Our results supported the rail’s status as a generalist forager and obligate tidal marsh species throughout the historic *** variable isoscape trends generated from feather isotope means illustrated a modern loss of the isotopic homogeneity between regions of historical tidal marsh,which correlated with spatially-explicit habitat alterations such as increasing biological invasions and sewage effluent over ***:These findings have reinforced the importance of tidal marsh conservation in the face of ongoing underlying changes to these important ecosystems.

关键词： Historical change estuary food webs isoscapes isotopes Ridgway’s rail tidal marsh

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Associations between Hormonal and Mechanical Factors of Knee Osteoarthritis in Women—A Preliminary Study

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Open Journal of Rheumatology and Autoimmune Diseases 2013年第2期3卷 79-85页

作者： David S. Mandeville Gretchen A. casazza Andrea C. Alvarez Julia Sheremet Brandee l. Waite Brian A. Davis Department of Kinesiology and Health Science California State University Sacramento USA Department of Physical Therapy California State University Sacramento USA Sports Medicine Program University of California Davis Health System Sacramento USA

The purpose of this study was to determine the associations between urinary estradiol (E2) metabolite concentration and medial knee loading with radiographic disease severity in middle aged women with initial stage knee osteoarthritis (OA). Women presenting with knee pain were recruited into a cross-sectional correlation study (KOA, n = 9, age = 52 ± 4 yrs). Self report menstrual history, the Modified Baecke Questionnaire and the Knee Injury and Osteoarthritis Outcome Score (KOOS) subjective data were collected. A fasting blood sample (follicle stimulating hormone (FSH) and Tumor Necrosis Factor-α (TNF-α)), and urine catch (16α-hydroxyestrone and 2-hydroxyestrone) were collected. Gait analysis using an 8-camera motion analysis system assessed internal knee varus moment and foot progression angle. Pearson Product moments tested for associations between urinary 16α-hydroxyestrone and 2-hydroxyestrone, TNF-α, medial knee loading, and radiographic disease severity (Kellgren/lawrence (K/l) radiographic score). Significant correlations were found within the hormonal biomarkers (r = 0.94, p p p = 0.31). No correlations were found for radiographic disease severity or TNF-α. The lack of association between hormonal and biomechanical variables could be due to large variability of the E2 metabolites seen in the menopause transition and the limited structural changes of initial staged knee OA.

关键词： Knee Osteoarthritis 2-Hydroxyestrone Follicle Stimulating Hormone Gait Analysis Medial Knee loading Tumor Necrosis Factor-α

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国际抗癌药物学术讨论会论文介绍

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中华医学杂志 1981年第4期61卷 244-246页

作者： F.B.Nicolis 刘昌孝(译) 徐煜庭(校) A.M.casazza F.Arcamone G.Beretta Farmitalia Carlo Erba Experimental Oncology Dept. Farmitalia Carlo Erba Ricerca and Sviluppo Chimico Farm3italia 3Carlo Erba Medical Oncology Dept. San Carlo Borromeo Hospital

1980年5月在我国举行了一次国际抗癌药物学术讨论会。会上国外报告论文14篇,国内报告14篇。国内论文已在国内刊物上发表,不一一摘要介绍了。这14篇论文的题目是:海南粗低抗肿瘤成分的研究(中国医学科学院药物研究所);加利利链霉菌思文...

1980年5月在我国举行了一次国际抗癌药物学术讨论会。会上国外报告论文14篇,国内报告14篇。国内论文已在国内刊物上发表,不一一摘要介绍了。这14篇论文的题目是:海南粗低抗肿瘤成分的研究(中国医学科学院药物研究所);加利利链霉菌思文变种产生的抗肿瘤抗生素(倪关林等);平阳霉素的药理研究(曾永苏等);10一羟基喜树碱对小鼠肝癌和肝组织CAMP和CGMP水平的影响(杨金龙等);可移植性小鼠白血病模型l7712的实验研究(郑升等);甲氧芳芥的临床研究m曾一等);平阳霉素的临床研究(叶祝三等);非何杰余氏淋巴瘤的分类(来少章)2 绒癌和恶性葡萄胎的化疗经验(宋鸿创等)2 恶性淋巴癌的合并化疗(周际昌);山油柑碱的药理和第一期临床研究(湖南医药工业研究所);斑整素铀的介绍(王广生)。本刊将陆续把国外的14篇论文作一摘要介绍。

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