Fuad Lechín
Fuad Lechín Corban, Venezuelan neuropharmacologist (08 August 1928 – From Lebanese parents Authored over 240 papers and 4 books Developed a new treatment of bronchial asthma and myasthenia gravis Demonstrated that drugs which enhances uptake by presynaptic serotonergic axons are potent anti-narcoleptic agents in patients resistant to methyl phenidate First to demonstrate the antidiarrheal effect of clonidine, dihydroergotamine, and other alpha adrenergic antagonists, as well as dopaminergic blocking agents Enunciated the adrenergic theory of schizophrenia FOUND That patients affected by vertigo have raised levels of free serotonin in plasma Two types of neurochemical disorders underlying hyperkinetic children (excessive free serotonin in plasma and excessive dopaminergic activity with noradrenergic over activity) That patients displaying post-traumatic stress disorder show total exhaustion of central noradrenergic, dopaminergic and serotonergic activity That symptomatic asthma patients show increased plasma serotonin values OTHERS With B. Van der Dijs & A.E. Lechin. Tianeptine. A new exploratory therapy for asthma. Chest J. 125(1):348-9, 2004 With B. Van der Dijs. Physiological, clinical and therapeutic basis of a new hypothesis for headache. Headache 20(2):77-84, 1980 With B. Van der Dijs, E. Lechin, F. Peña & A. Bentolilla. The dopaminergic and noradrenergic blockades: a new treatment for headache. Headache 18(2):69-84, 1978 New method of investigation of exocrine secretion of the pancreas: preliminary communication. Gac. Med. Caracas 61(3-5):89-110, 1954 Un nuevo modelo de dilatador esofágico. Gen 7:1-2, 1952-3 Papers in top-journals With B. Van der Dijs & A.E. Lechin. Tianeptine, plasma serotonin and pulmonary hypertension. Lancet 361(9351):87, 2003 Intestinal hormones and plasma insulin. Lancet 2:35-6, 1966 With B. Van der Dijs. Glucose disposal. Lancet 2:1122, 1964 HONOURS Medicine and Physiology Nobel Prize nominee (2001) 2000 Outstanding Scientists of the 20th Century, International Biographic Centre (2000) 500 Leaders of Influence, American Biographical Institute (2000) LINKS www.lechin.com
Friedrich Carl Lehmann
Friedrich Carl Lehmann, German-born Colombian botanist and mycologist (Gusow-Platkow, Markisch-Oderland, Brandenburg State 27 December 1850 – Popayá, Cauca Province 24 November 1903) Collected many orchid specimens that were recognized as new taxa by famous experts DESCRIBED PLANTAE TAXA (Orchidaceae) Genera Gorgoglossum 1897 Otopetalum 1899 with Kraenzlin Trevoria 1897 Species About 130 HONORS Lehmanniella Gilg 1895 (Gentianaceae) Neolehmannia Kraenzlin 1899 (Orchidaceae)
Frederico Waldemar Lange
Frederico Waldemar Lange, Brazilian geologist, micropaleontologist and stratigrapher (Ponta Grossa, Paraná State 23 December 1911 – Rio de Janeiro 16 June 1988) From German ancestry Authored 22 works Described new fossil species of mollusks, brachiopods, scolecodonts, chitinozoans and acritarchs DESCRIBED FOSSIL TAXA (incomplete) Family Paulinitidae (Polychaeta) Genera Paulinites 1947 (Polychaeta) Navifusa 1967 with Combaz and Pansart (Protozoa) Cladochitina 1967 (Chitinozoa) Species Angochitina mourai 1952 Cladochitina biconstricta 1967 Cladochitina varispinosa 1967 Conochitina biconstricta 1949 Desmochitina sommeri 1952 Diaphorostoma paranensis 1943 Didymaulichnus furnai 1942 Eunicites paranaensis Lagenochitina avelinoi 1952 Mourlonia oliveirai 1952 Nuculites depressus 1943 Orbiculoidea excentrica 1943 Paulinites paranaensis 1947 Paulinites canuiensis 1950 Pholidops kozlowskii 1943 HONORS (Fossil) Langeites Kielan-Jaworowska 1966 (Polychaeta) Langella Mendes 1961 (Brachiopoda)
Francisco Leon y Blanco
Francisco Leon y Blanco, Cuban-born Mexican pathologist (Guantanamo, Cuba 04 July 1904 – 1960) From Chinese and Spanish descent With Cuban J.A. Armenteros discovered Treponema herrejoni as etiologic agent of mal de pinto independent from Saenz & Triana (1938) Proposed modern conception of pinto and demonstrated the experimental transmission of this disease in man Estudios sobre la etiologia del mal de pinto: la transmisión experimental del mal de pinto de persona a persona. Nota preliminar. Rev. Mex. Medicina 19:17-22, 1939 Described initial and secondary lesions of pinta or mal de pinto Proposed the term pintides for disseminated secondary lesions of pinta With F. Latapí. Las lesiones del principio del mal de pinto. Una nueva dermatosis. Rev. Mex. Medicina 20:315, 1940 Eponym of Leon Blanco disease or mal de pinto
Francisco Jeronymo Salles Lara
Francisco Jeronymo Salles Lara, Brazilian biochemist (São José dos Campos, São Paulo State 22 June 1925 – São Paulo State 07 September 2004) Described a method to culture dipteran Rhynchosciara angelae With H. Tamaki & C. Pavan. Laboratory culture of Rhynchosciara angelae. Amer. Natur. 99:189-91, 1965 With M.C. Okretic. A micromethod for the assay of poly(A) containing RNA by gel electrophoresis. Biochem. J. 151:575-80, 1975 Discovered that DNA puffs were responsible to messengers production With M.C. Okretic & J.S. Penoni. Messenger-like RNA synthesis and DNA chromosomal puffs in the salivary glands of Rhynchosciara americana. Arch. Biochem. Biophys. 178:158-65, 1977 Papers in top journals With M.F. Bonaldo & R.V. Santelli. The transcript from a DNA puffs of Rhynchosciara and its migration to the cytoplasm. Cell 17:827-33, 1979 With D.M. Glover, A. Zaha, A.J. Stocker, R.V. Santelli, M.T. Pueyo & S.M. Toledo. Gene amplification in Rhynchosciara salivary gland chromosomes. Proceed. Nat. Acad. Sci. 79:2497-51, 1982
Fernando Lopez y Sanchez Roman
Fernando López y Sanchez Román, Mexican surgeon and hygienist (Llaltenango, today Ciudad Sanchez Román, Zacatecas State 05 November 1854 – Ciudad de Mexico 17 May 1924) DEVELOPED METHODS Techniques for blepharoplasty and congenital luxation of crystalline lens (1892) López procedure for resection of pterygon A procedure for shoulder dislocation (1893) DEVICES Profunda artery clamps (1883) i.e. modified the clamp for facilitating the ligation of deep arteries A device for blindness simulation