Lynch Arribalzaga brothers
Felix Benito Lynch Arribalzaga, Argentine entomologist (Buenos Aires 03 April 1854 – Buenos Aires 10 April 1894) Enrique Lynch Arribalzaga, Argentine entomologist and ornithologist (Buenos Aires 26 August 1856 – Resistencia, Jujuy Province 28 June 1935) They were of Irish descent. TAXA DESCRIBED Diptera (considering the global production of brothers) Tribes Chriorhinini 1892 Xilotini 1891 GENERA Planetolestes 1879 Asicya 1880 Ceratotaenia 1880 Leptoharpacticus 1880 Cyclicomera 1881 Phonicocleptes 1881 Tolmerolestes 1881 Rhathimomyia 1882 Stratiotomyia 1882 Pediophoneus 1883 Argentinomyia 1891 Heteronycha 1891 Holmbergia 1891 Janthinosoma 1891 Ochlerotatus 1891 Taeniorhynchus 1891 Uranotaenia 1891 Promilesia 1892 Felix Lynch Arribalzaga (Genera described Coleoptera and Hymenoptera) Astenus 1884 Campoporus 1884 Chloecharis 1884 Cryptocompsus 1884 Heterophaena 1884 Myrmecoxenia 1884 Oligonotus 1884 Scaptopoda 1878 (Hymenoptera) Sciocharis 1884 Stenosidotus 1884 Stereocephalus 1884 Enrique Lynch Arribalzaga (Subspecies described Aves) Tachybaptus dominicus speciosus 1877 Rhea americana albescens 1878 (with Holmberg) HONORS (honoring Felix Lynch Arribalzaga) Lynchiatilla Casal 1963 (Hymenoptera) Lynchiella Lahille 1904 (Diptera) Microlynchia Lutz 1915 (Diptera)
Luiz Gonzaga Lordello
Luiz Gonzaga Engelberg Lordello, Brazilian helminthologist and plant pathologist (Piracicaba, São Paulo State 11 March 1926 – Piracicaba, São Paulo State 04 February 2002) Authored over 150 papers and textbooks DESCRIBED PLANT DISEASES AND ITS PARASITES First record of Pratylenchus vulnus on the roots of peach trees in Nematodo nocivo ao pessegueiro. Rev. Agric. 48(2-3):128, 1973 With A.R. Monteiro & O. Suzuki. Nova doença da fruteira do conde causada pelo nematóide Radopholus similis. Rev. Agric. 37:67-71, 1962 With C.P. Costa. A new nematode parasite of coffee roots in Brazil. Rev. Bras. Biol. 21(4):363-6, 1961 Uma doença do feijoeiro causada por nematóides. Rural 41(486):21, 1961 Two nematodes found attacking potato in Cochabamba, Bolivia. Anais Acad. Bras. Ciencias 33(2):209-15, 1961 With A.P.L. Zamith. Meloidogyne caffeicola, sp.n., a pest of coffee trees in the State of Paraná, Brazil (1960) A nematosis of yam in Pernambuco, Brazil, caused by a new species of the genus Scutellonema. Rev. Bras. Biol. 19:35-41, 1959 A note on nematode parasites of red anturium (Anthurium andraeanum Lind.) with a description of Rotylenchus boocki sp.n.. Nematologica 2:273-6, 1957 Two new nematodes found associated with soybean roots. Nematologica 2:19-24, 1957 Sobre um nematódeo do gênero Pratylenchus parasito das raízes de Allium cepa. Rev. Agr. S. Paulo 31(3):181-8, 1956 Meloidogyne inornata, sp.n. a serious pest of soybean in the State of São Paulo, Brazil. Rev. Bras. Biol. 16(1):65-70, 1956 With A.P.L. Zamith & O. Boock. Novo nematodeo parasite da batatinha. Bragantia 13(11):141-9, 1954 Nota prévia sobre um nematódeo associado a uma moléstia das folhas do morangueiro. Rev. Agr. S. Paulo 28 (3-4):130-1, 1953 Xiphinema brasiliense, nova espécie de nematóide do Brasil, parasita de Solanum tuberosum L. Bragantia 11(1-3):87-92, 1951 DESCRIBED NEMATODA TAXA Genera Brasilaimus 1957 with Zamith Caryboca 1967 Ibipora 1977 with Monteiro Metaporcelaimus 1965 Mylodiscoides 1963 Phytorhabditis 1963 with Oliveira Proleptonchus 1955 Spirotylenchus 1958 with Cesnik Tubixaba 1980 with Monteiro Species About 35 new helminth species HONORS Genus Lordellonema Andrassy 1960 (Nematoda) Rhone-Poulenc Prize, Organization of Tropical American Nematologists (1987) “in recognition for outstanding accomplishments in research and service to the Science of Nematology”
Luiz & Maria Labouriau
Luiz Fernando Gouvea Labouriau, Brazilian plant physiologist (Rio de Janeiro 22 June 1921 – Brasilia 29 March 1996) From French descent and nephew of ophthalmologist Hilario Soares de Gouvea Authored about 75 papers Recognized worldwide for his studies on seeds germination Introduced the thermodynamics and information theory (1976) in studies of germination physiology Performed important contributions to germination kinetics and its thermodynamical treatment Provided original interpretations about temperature effects on proteins stability during the germination process Seed germination as thermobiological problem. Rad. Environ. Biophysics 15:345-66, 1978 Proposed mathematical expressions to measure the germination process (1983) Discovered that the fern Regnellidium diphyllum produces rubber being the first report of lactescence in Pteridophyta (1952) after Mahabale With L. Morhy & J.C. Gomes Jr. Ocimum nudicaule Benth., a new source of methyl-chavicol (1970) METHODS Aplicações fitossociológicas de um novo índice de concentração (1947) Nova expressão do grau de homogeneidade de uma associação vegetal (1947) Proposed the absciss of the mean of the frequency diagram of plant associations as a new index of homogeneity Nota sobre o baricentro dos diagramas de frequência das associações vegetais. Arq. Jard. Bot 8:221-5, 1948 Developed a method for detecting the presence of silicon in leafs With S. Teixeira da Silva. Corpos silicosos das gramíneas dos cerrados. III. Pesquisas Agropecuárias Brasileiras. Secção Botanica 5:1167-82, 1970. Developed a thermal gradient block A thermal gradient block for germination experiments. Rev. Bras. Biologia 37:295-05, 1977 With R.B. Cavalcanti. Um bloco de gradiente térmico de fácil construção para experimentos termobiológicos. Rev. Bras. Fisiol. Veg. 8:149-56, 1996 OTHER PAPERS With I.S. Labouriau. The Arrhenius plot of a physiological rate process is never linear. Cien. Cult. 43:363-9, 1991 Nota sobre uma lei da morfologia da exina dos grãos de pólen. Arq. Jard. Bot. Rio de Janeiro 8:249, 1948 Sobre a simetria dos grãos de pólen. Rev. Bras. Biol. 7(4):419-22, 1947 His wife, Maria Lea Salgado Labouriau, palynologist (Rio de Janeiro 02 August 1931 – Brasilia 13 July 2013) Authored 66 papers, 4 books and 11 book chapters (until 2002) Authored Contribuição a Palinologia dos Cerrados (Contribution to Cerrado Palynology), that became a world reference in this field (1973) Developed Salgado-Labouriau & Rizzo atmospheric collector With J.A. Rizzo. Nota preliminary sobre a coleta atmosférica no município de Aparecida (Goiás). Anais XX Congr. Nac. Bot. Soc. Bras. Bot. 60-70, 1969 TECHNIQUES Modified the Faegri-Iversen staining technique for pollen fresh grains (1973) With U. Rull. A method of introducing exotic pollen for paleoecological analysis of sediments. Rev. Palaeobot. Palynol. 47:97-103, 1986
Luis Roger Lambert
Luis Roger Lambert, French-born Argentine geologist and paleontologist (fl.1943-56) SOME BIBLIOGRAPHY With C.A.S. Piscione. Una hipotesis sobre el origin de potentes espesores del yeso Perfil geologico en el valle superior del rio de los Patos Sur, Provincia de San Juan (1943) Algunas Trigonias del Neuquen. Rev. Museo La Plata Ser. Paleont. 2(14):357-97, 1944 Contribución al conocimiento de la Sierra de Chacai Có (Neuquen). Rev. Soc. Geol. Arg. 1:4, 1945 Geologia de la zona de las cabeceras del rio Catan-Lil (Territorio de Neuquen) 1948 Geologia del Cerro Bola (1948) With C.A. Galli. Observaciones geologicas en la región situada entre Piedra del Aguila y Paso Flores (Neuquén). Rev. Asoc. Geol. Arg. 4, 1950 HONORS Lambertrigonia Leanza 1993 (Fossil Mollusca)
Luis Federico Leloir
Luis Federico Leloir Aguirre, Argentine biochemist (Paris 06 September 1906 – Buenos Aires 02 December 1987) ACHIEVEMENTS Obtained with Juan Mauricio Muñoz, the first free-cell oxidative system (1939) Discovered angiotensin with E. Braun-Menendez, J.C. Fasciolo and J.M. Muñoz (1939), a discovery independent from Page and Helmer With E. Braun-Menendez, J.C. Fasciolo and A. Taquini described enzymatic nature of renin-angiotensin system and its link to arterial hypertension Discovered sugar nucleotides, determined its chemical nature and showed that play a key role in sugar interconversion and polysaccharides synthesis (1948) with R. Caputto, C.E. Cardini and A. Paladini Showed that biosynthesis of sugar and sugar-derivatives compounds are essentially transfer reactions Isolated glucose 1,6 diphosphate known as Leloir ester (1948), uridine diphosphate glucose (UDP) in 1950, uridine diphosphate acetyl glucosamine and guanosine diphosphate mannose (1953) With R. Caputto discovered general synthetic mechanism of disaccharides in yeasts, showing the same mechanism in plants (1950) Demonstrated sucrose synthesis from uridine diphosphate glucose and fructose With C. Cardini established that in plant tissues two reactions can lead to synthesis of sucrose (1953-5) With C. Cardini suggested the involvement of uridine diphosphate N-acetylglucosamine in chitin synthesis (1953) With E. Cabib first demonstrated the participation of UDPG in the biosynthesis of disaccharides in J. Am. Chem. Soc. 75:5445, 1953 Discovered glycogen synthase Synthesized trehalose with Enrico Cabib (1953) and sucrose with Carlos Eugenio Cardini and J. Chiriboga (1955) Showed the enzyme that transfer glucose from UDP-glucose to glycogen (1957) With C.E. Cardini described an alternative mechanism for synthesis of glycogen from UDP-glucose and glycogen synthase (1957) With R. Caputto discovered and determined structure of glucose-1,6 di-phosphate (1958) With Yamaha & Cardini demonstrated that glycosides synthesis via UDPG (1960) With Fekete & Cardini discovered enzymatic system that catalyzes sucrose transformation into starch (1960) With Frydman & Cardini demonstrated that phytoglycogen biosynthesis from ADP-glucose (1965) Identified dolichols (1970) Clarified transfer mechanism from oligosaccharides to proteins, elucidating the role of dolichol in proteins glycosylation Demonstrated the role of polyprenol in glucose metabolism Elucidated primary mechanisms of galactose metabolism (Leloir pathway) and determined what causes galactosemia Discovered the central role of uridine diphosphate derivatives in the interconversion of galactose and glucose Discovered the function of glycolipids as precursors of glycoproteins Clarified the mechanism of biosynthesis of glycoproteins (1970s) Established the basis of the pathway leading to the synthesis of glycoproteins in eukaryotic cells and also provided the first evidence indicating that the protein-linked oligosaccharides (glycoproteins) was processed METHODS With J.L. Reissig & J.L. Strominger. A modified colorimetric method for the estimation of N-acetyl amino sugars. J. Biol. Chem. 217(2):959-66, 1955 With E. Cabib & H.G. Pontis. An improved method for the isolation of some nucleoside diphosphate sugar from yeast. Biochem. Biophys. (1957) With Cabib and Cardini suggested the use of sodium chloride in dilute hydrochloric acid for eluting nucleotides from a column of ion-exchange resin and introduced the technique of purifying nucleotides with Norite Papers in top journals With J.M. Muñoz, J.C. Fasciolo & A.C. Taquini. Hypertensin: the substance causing renal hypertension. Nature 144:980, 1939 With J.C. Fasciolo, J.M. Muñoz & E. Baun Menendez. On the specificity of renin. Science 92 (2398):554-5, 1940 With E.B. Menendez, J.C. Fasciolo, B.A. Houssay, J.M. Muñoz & A.C. Taquini. Angiotonin or hypertensin. Science 98(2553):495, 1953 With M.A. Rongine de Fekete & C.E. Cardini. Mechanism of starch biosynthesis. Nature 187:918-9, 1960 With J. Mordoh & C.R. Krisman. In vitro synthesis of particulate glycogen. Proc. Natl. Acad. Sci. USA 53:86-91, 1965 With N.H. Behrens. Dolichol monophosphate glucose: an intermediate in glucose transfer in liver. Proc. Natl. Acad. Sci. USA 66(1):153-9, 1970 Two decades of research on biosynthesis of saccharides. Science 172(3990):1299-1303, 1971 With N.H. Behrens & A.J. Parodi. Glucose transfer from doliochol monophosphate glucose: the product formed with endogenous microsomal acceptor. Proc. Natl. Acad. Sci. USA 68(1):2857-60, 1971 With A.J. Parodi, N.H. Behrens & H. Carminatti. The role of polyprenol-bound saccharides as intermediates in glycoprotein synthesis in liver. Proc. Natl. Acad. Sci. USA 69(11):3268-72, 1972 With N.H. Behrens, H. Carminatti, R.J. Staneloni & A.I. Cantarella. Formation of lipid-bound oligosaccharides containing mannose. Their role in glycoprotein synthesis. Proc. Natl. Acad. Sci. USA 70(12):3390-4, 1973 With R.J. Staneloni. Oligosaccharides containing glucose and mannose in glycoproteins of the thyroid gland. Proc. Natl. Acad. Sci. USA 75(3):1162-6, 1978 EPONYMY Leloir ester (glucose 1,6diphosphate) Leloir pathway or Leloir cycle or Leloir-Cardini cycle (galactose metabolism) Leloir enzymes (known as glycosyltransferases) Leloir reaction (between glucose 1,6 diphosphate and mannose 1 phosphate) Leloir-Cardini enzyme (UDP glucose glycogen transglucoxylase) Leloir method for extraction of glycogen from liver by mercuric chloride Leloir-Goldemberg method for determining enzymatic activity (with Sara H. Goldemberg) Leloir-Trucco method for measuring kynase activity Paladini-Leloir solvent HONORS Chemistry Nobel Prize (1970) Gairdner Award (1966) Louise Gross Horwitz Prize (1967) Asteroid 2548 Leloir
Luis de la Fuente
Luis Mansueto de la Fuente Carrizo, Argentine cardiologist (La Rioja 29 July 1932 – Authored over 400 scientific works CONCEPTS Proposed the cardiac catheterism in acute myocardial infarction or invasive coronariography (1970) Showed the permeability of by-pass (1971) Proposed the coronary sinus acting as a fifth heart cavity (2002) With A. Barceló & S.H. Stertzer. Anatomic and histologic review of the coronary sinus. Int. J. Morphol. 22(4):331-8, 2004 With S. Stertzer named biointerventionist cardiology ACHIEVEMENTS With J.H.K. Vogel & L.D. Craddock. Una tecnica simple para detectar cortocircuitos arteriovenosos intracardíacos y para identificar las ondas P del eletrocardiogramas en las arritmias complexas. Rev. Arg. Cardiol. 31(7), 1964 Called attention to the standing-flexion position for auscultation of the heart With A. Ravin & L.D. Craddock. The standing-flexion position for auscultation of the heart. J. Am. Med. Assoc. 192:60-1, 1965 With Dick Sanders performed the third partial angioplasty in the world (1965) Classified angiographically the myocardial postinfarction angina Performed the first angioplasty with drug-delivery stent published in Journal of Invasive Cardiology (1999) With Y. Honda, E. Grube, P.G. Yock, S.H. Stertzer & P.J. Fitzgerald. Novel drug-delivery stent: intravascular ultrasound observations from the first human experience with the QP2-eluting polymer stent system. Circulation 104:380-3, 2001 With Julio Argentieri performed the first stem cells myocardial implantation by transendocardiac approach (2004) With Sergio Garrido and US bioengineer Todd McAllister first to implant neoartery or artificial artery (2005). Published in the New England Journal of Medicine and The Lancet DEVICES With US cardiologist Abe Ravin developed a device that simulates the heart sounds and murmurs (1965) Introduced improvements in stents (1986) With Hugo Londero designed a catheter for carotid Designed another catheter for cardiac left auricle HONOURS Medicine and Physiology Nobel Prize nominee (2005)