generic faculty blue silhouette of a male head and shoulders

Ezequiel R. Rivera

Professor Emeritus

College
College of Sciences
Department
Biological Science
Phone
978-934-2868
Email
Ezequiel_Rivera@uml.edu

Expertise

Plant Biology & Cell Biology

Research Interests

Plant Biology & Cell Biology

My research interests are diverse; and make use of various types of microscopy to study the ultrastructure of rare and potentially endangered plant species, marine organisms and parasites that cause schistosomiasis. In addition, students in my laboratory are unraveling some of the events involved in spermatogenesis. I collaborate with other faculty to assist them, using cytochemical and immunocytochemical methods, in the identification of cellular components relevant to their research

Education

  • Ph.D.: Botany-Biological Sciences, (1973), University of Texas - Austin, TX
  • M.S.: Biochemistry, (1966), Purdue University - Indiana
  • B.S.: Biology & chemistry, (1964), Sul Ross State college - Texas

Selected Awards and Honors

  • Outstanding Faculty Award (2012) - Univ. Mass. Lowell, Biol. Sci. Dept.
  • SGA nominee (2009) - SGA at UMassLowell
  • Outstanding Faculty Award (2004) - Univ. Mass. Lowell, Biol. Sci. Dept.
  • Who's Who in Sciences Higher Education (2004)
  • National Consortium for Academics & Sports – Faculty Award (2002)
  • National Consortium for Academics & Sports – Faculty Award (2001)
  • Outstanding Faculty Award (2001) - Univ. Mass. Lowell, Biol. Sci. Dept.
  • Who's Who among America's Teachers (1996)
  • Who's Who among America's Teachers (1994)
  • Who's Who among Hispanic Americans (1991)
  • International Directory of Electron Microscopy (1990)
  • Dean's Professional Development Award (1989) - UMass Lowell
  • Who's Who in Science in Engineering (1989)
  • Dean's Professional Development Award (1988) - UMass Lowell
  • Who's Who of Emerging Leaders of America (1987)
  • Directory of Distinguished Personalities (1986)
  • American Men and Women of Science (1982)
  • Who's Who in Frontier Science and Technology (1982)
  • Men of Achievement (1980)
  • Who's Who in the East (1978)
  • Sigma Xi (1974)
  • Phi Kappa Phi (1973)
  • VII-AUA-ANL Biology Symposium: Photobiology. (1972) - Argonne National Laboratory UT-Austin
  • Teaching Assistantship (1971) - Univ. Texas (Austin)
  • Research Assistantship (1964) - Purdue Univ. (Indiana)
  • Alpha Chi (1963)
  • Who's Who in American Colleges and Universities (1963)
  • Dean's List (1962) - Sul Ross State College (Texas)

Selected Publications

  • Dhitavat, S., Ortiz, D., Rogers, E., Rivera, E.R., Shea, T.B. (2005). Folate, Vitamin E, and Acetyl-L-Carnitine Provide Synergistic Protection Against Oxidative Stress Resulting from Exposure of Human Neuroblastoma Cells to Amyloid-Beta. Brain research, 1061(2) 114-117.

Selected Presentations

  • Analysis of tau associated proteins in secreted exosomes - clues to tau-mediated neurodegeneration?, 2011
  • Tau misprocessing leads to non-classical tau secretion via vesicle release Ð implications for the spreading of tau lesions in AD - Int Conf. Alz Dis, 2011 - Paris, France
  • Tracing tau-amyloid beta intravesicular interactions with nanoparticles - Int Conf. Alz Dis. meeting, 2011 - Paris, France
  • Tau secretion from M1C human neuroblastoma cells occurs via the release of exosomes. - Keystone Meeting on Neurodegenerative diseases, February 2011 - Taos, NM
  • Historical Perspective of 25 Years of Electron Microscopy - Spring Symposia at Woods Hole, 2008 - Wood Hole Biological Laboratories, Woods Hole, MA
  • Divergent and Convergent Oxidative Damage Following Abeta Treatment in Culture - Annual Meeting of Society for Cell Biology, 2002 - San Francisco, CA
  • The Acetyl-CoA Precursor, Acetyl-L-Carnitine, Diminishes Amyloid-beta Neurotoxicity: Role of ATP and Electron Transport - Annual Meeting of Society for Cell Biology, 2001 - Washington DC
  • Plant Crystals - Useful Devices or Extravagant Jewelry? - The National Science Bowl, 2001 - Washington, D.C.
  • Plant Oxalates: Physiology and Visualization, 1998 - Queens, NY
  • Compatibility of Surgically Transplanted Sporocysts of Schistosomes, 1996 - Perpignan, France
  • Effects of Cytochalasin B in the Uptake of Glucose and the Ultrastructure of S. mansoni schistosomula. - New England Society for Electron Microscopy-Connecticut Electron Microscopy Society Symposium, 1996 - Woods Hole, MA
  • Reproductive Studies on Schistosoma sp. Using Electron Microscopy - Series Lectures, 1996 - Bangkok, Thailand
  • Hormonal, Environmental, and Molecular Aspects of Development - Annual Meeting, 1995 - San Diego, CA
  • Distribution of Bound Calcium in Cells and Walls of Taxus canadensis - Annual Meeting of American Botanical Society, 1995
  • Bound Calcium in Plant Cells and their Walls Analyzed by X-ray in Transmission Electron Microscopy - Proc. 13th Int. Congress Electron Microscopy, 1994 - Paris, France
  • Calcium/Sulfur Profiles of Leaf Cell Contents in Taxus canadensis - 4th Int. Congress Plant Mol. Biol, June 1994 - Amsterdam
  • Cytochemical Methods in the Study of Human Tropical Parasites - Spring Symposium and Retreat in Physiology, 1993 - Worcester, MA
  • Ultrastructure of Transplanted Schistosome Sporocysts in Incompatible Snails - 49th Annual Meeting of Electron Microscopy of America, 1991 - San Jose, CA
  • Spermatogenesis in Invertebrates - Seventh Annual Spring Symposium, 1990 - Woods Hole, MA
  • Seasonal Variation in Golgi Dictyosomes in Mesophyll Cells of Taxus - 47th Annual Meeting of Electron Microscopy Society of America, 1989 - San Antonio, TX
  • Use of Electron Microscopy in the Study of Schistosoma sp., 1986 - Perpignan, France
  • Ultrastructure of the Apical Cells of Spur Roots in Ferocactus latispinus Haworth - International Meeting of American Institutes of Biological Science, 1985
  • Use of Crystallographic Methods in Biological Investigations, 1985
  • Giant Mitochondria in the Apical Meristemis of Cacti - 42nd Annual Meeting of Electron Microscopy Society of America, 1984
  • Gold Immunologic Techniques for Electron Microscopy, 1984 - Billerica, MA
  • Methods of Cytochemical Analysis in Ultrastructure, 1984 - Boston, MA
  • Relaxation of Soft Bodied Aquatic and Marine Invertebrates for Scanning Electron Microscopy - 41st Annual Meeting of Electron Microscopy Society of America, 1983
  • Calcium Phosphates and Calcium Oxalates - Gordon Conferences, 1983 - Plymouth, NH
  • The Physiology of Calcium Oxalate and 13C in Plants, 1983 - Waltham, MA
  • Cell Structure and Function - 40th Annual Meeting, 1982 - Washington, D.C.
  • Ultrastructure of the Plastids in the Overwintering Green Leaves of Taxus canadensis. - 40th Annual Meeting of Electron Microscopy Society of America, 1982
  • 13C/12C Ratios of Plant Surface Waxes - Annual Meeting of the American Society for Plant Physiology, 1982 - Honolulu, HI
  • Ultrastructural Morphology of the Plastids in Ferocactus latispinus (Haworth) - Annual Meeting of Electron Microscopy Society of America, 1981
  • Seasonal Changes in Evergreen Trees - Ultrastructure - Annual Symposium, 1981 - Natick Army Labs, Natick, MA
  • Introduction to Electron Microscopic Technique - Lecture Series, 1981 - Bangkok, Thailand
  • Ultrastructure of Peruvian and Aleutian Mummified Tissues - 38th Annual Meeting of Electron Microscopy Society of America, 1980 - Reno, NV
  • The Ultrastructure of Fenugreek (Trigonella foenumgraecum) Cotyledons - Annual Meeting of Botanical Society of America, 1980 - Seattle, WA
  • Sporocyst Development of Schistosoma mekongi within its Snail Vector Lithoglyphopsis aperta, 1980 - Danvers, MA
  • An Ultrastructural Cytochemical Analysis of Mucoid Secretory Granules in Nudibranch Epidermis. - 37th Annual meeting of Electron Microscopy Society of America, 1979
  • Mucopolysaccharide Aspects of the Ellipsoid Components in Nudibranch Epidermal Cells - 37th Annual Meeting of Electron Microscopy Society of America, 1979
  • The Ultrastructure of the Plastids in Monotropa uniflora - Annual Meeting of American Botanical Society, 1979 - Stillwater, OK
  • Ultrastructure of the Development of Daughter Sporocysts to Cercaria of Schistosoma mekongi. - Joint Symposia of Texas and Louisiana Societies for Electron Microscopy, 1979 - New Orleans, LA
  • Ultrastructural Studies of Intramolluscan Development - U.S.-Japan Coop. Med. Sci. Prog.-Conf. on Schistosomiasis and Filariasis, August 1979 - New Orleans, LA
  • Lamellae-contained Bodies in Pereskia sp. Chloroplasts - Annual Meeting American Botanical Society, 1978 - Blacksburg, Virginia
  • Ultrastructural Seasonal Changes in Plastids and Vacuoles of Taxus Canadensis - Annual Meeting American Botanical Society, 1978 - Blacksburg, Virginia
  • Stereology in Biology - 35th Annual meeting of Electron Microscopy Society of America, 1977 - Boston, MA
  • The Physiology of 13C/12C Fractionation in Plants as Reflected by Lipids, 1974 - Champagne, IL
  • Vacoulation in Echinomastus intertextus and Oxalate Deposition, 1974 - Manhattan, KS
  • Chloroplast Structure in the Cactus Epiphyllum sp. - Annual Meeting of Texas Society for Electron Microscopy, 1972 - Huntsville, TX
  • Automated Clinical Chemistry - 3rd Annual Meeting, 1969 - Tosokawa USAF Base, Japan
  • , 1968 - Letterman General Hospital, San Francisco, CA
  • Automated Systems for Analysis of Clinical Fluids, 1968 - Letterman General Hospital, San Francisco, CA
  • Column Chromatography: Use in Toxicology, 1968 - Ft. Baker, CA
  • The Distribution of Phosphorylcholine-cytidyl transferase among Cell Fractions of Onion - Annual Meeting of the American Society for Plant Physiology, 1967
  • A Proposed Mechanism for Reduced Biosynthesis of Cholesterol in Suckling Rat - Annual Meeting of American Oil Chemists Society, 1966
  • Classification and Identification of Pure Aromatic Hydrocarbons - Amer. Chem. Soc. 145th Meeting, 1963