Guillermo Michelena
Guillermo Michelena Saldías, Venezuelan surgeon (Willemstad, Curaçao 06 April 1817 – New York 15 January 1873) Invented an urethral dilatator in Des rétrécissements de l’uréthre (1847) Performed a total extirpation of parotid maintaining the facial nerve with international repercussion (1857) SOME BIBLIOGRAPHY Tratado de aneurismas y ligaduras precedido de una memoria sobre el organismo patológico (1854) Nueva teoria sobre el mecanismo de parto (1869)
Gregorio Santiago Montes
Gregorio Santiago Montes Welch, Argentine-born Brazilian cytologist and histologist (Buenos Aires 01 April 1952 – 19 October 2002) His works on structural biology of extracellular matrix earned him international recognition Demonstrated that extracellular matrix structures could be distinguished due to many characteristics of fibrillae composition With L.C.U. Junqueira et al. demonstrated the distribution and architecture of collagen in cartilages, nerves, arteries and skin (1979-89) Demonstrated definitively that reticular fiber is distinct of collagen fiber With L.C. U. Junqueira, R.M. Krisztan, K.M. Shigihara, R. Tokoro & P.A.S. Mourão. Histochemical and morphological characterization of reticular fibers. Histochemistry 65:131-41, 1980 Elucidated the process of uterine cervix softening at parturition With M. Zugaib, L.C. U. Junqueira, O.M.S. Toledo, R.M. Krisztan & K.M. Shigihara. Morphologhic and histochemical evidence for the occurrence of colagenolysis and for the role of neutrophilic polymorphonuclear leukocytes during cervical dilation. Am. J. Obstet. Gynecol. 138:273, 1980 Established definitively collagen architecture in mammalian cartilages With N.Z. Zambrano, K.M. Shigihara, E.M. Sanchez & L.C. U. Junqueira. Collagen arrangement in cartilages. Acta Anat. 113:26-38, 1982 Elucidated the nature of skeletal elements in tail fin ray of teleosts showing that they display all the morphological and histochemical features of a cartilaginous tissue With J. Becerra, O.M.S. Toledo, M.A. Gordilho & L.C. U. Junqueira. Fine structure and histochemistry of the tail fin ray in teleosts. Histochem 75:363-76, 1982 Showed that collagen molecules are orderly disposed in basal laminae With L.C.U. Junqueira, R.R. Brentani, O.M.S.Toledo et al. Evidence for collagen molecular orientation in basement membranes. Histochem. J. 15:785-94, 1983 Described a new type of acellular cartilage found in arterious cone of Potamotrygon sp. With O.M.S. Toledo & L.C.U. Junqueira. Histochemical and morphological studies on a new type of acellular cartilage. Basic Appl. Histochem. 27:1-8, 1983 First to describe morphological differences between the distinct types of intermediate filaments With L.C.U. Junqueira, P.P. Joazeiro, S.M. O. Vieira, A.B. Costa Silva & A. Cais. Specific attachment of morphologically-distinct intermediate filaments to desmosomes and hemidesmosomes in the epidermis of the tadpole of the anuran Pseudis paradoxus. J. Submicrosc. Cytol. 16:643-8, 1984 METHODS A horse laparotomy technique With E.H. Luque & H. Silva. Laparotomia em equinos: nuestra técnica. Gac. Vet. Buenos Aires 42:38-44, 1980 Proposed a precise method for osteid distinction and characterization With M.T. Assis Figueiredo, H. Torloni & L.C.U. Junqueira. Differential diagnosis of osteid. A study on human osteosarcoma collagen by the histochemical Picrosirius-polarization method. J. Pathol. 148(2):189-96, 1986 A modified Weigert’s technique for the demonstration of oxytalan fibres. J. Braz. Assoc. Advan. Science 44:224-33, 1992 With E.M. Negri, S.S. Mori, C.S.V. Barbas & V.L. Capelozzi. A simple method for the differential characterization of alveoli and alveolar ducts in normal and injured lungs (2001)
Goetz Albert Maekelt
Götz Albert Maekelt, German-born Venezuelan parasitologist (Bitterfeld 15 October 1920 – Caracas 29 June 2008) Authored over 100 publications Authored works about toxoplasmosis detection with great reverberation Developed seroepidemiologic tests Proposed a complement fixation reaction for Chagas disease With J.E. López. Reacción de desviación del complemento para el diagnostico de la forma crônica de la enfermedad de Chagas. Acta Cient. Venez. 7:128, 1956 Die komplementbin-dungsreaktion der Chagas’krankheit. Tropenmed. Parasit. 11(2):152-6, 1960 With C. Comenares de Alayón. Simple method for the mailing of chagasic serums from rural regions. Arch. Venez. Med. Trop. Parasitol. Med. 3:133-42, 1960 A modified procedure of xenodiagnosis for Chagas disease. Amer. J. Med. Hyg. 13:11-5, 1964 Developed 3 new liquid media for mass cultivation of Trypanosoma cruzi Mass culture of Trypanosoma cruzi in particle-free monophasic liquid media using an enzyme technique. Mitteil. Osterr. Gesellsch. Tropenmed. Parasit. 5:17-20, 1985
Gilberto Morillo
Gilberto Neptaly Morillo Pacheco, Venezuelan botanist (Caracas 12 October 1944 – DESCRIBED PLANTAE TAXA Genera Atrostemma 2015 Austrochthamalia 2013 with Fontella Pereira & Valerio Bruceholstia 2015 Chloropetalum 2015 Cristobalia 2016 with Caceres & Keller Fontellaea 1994 Graciemoriana 2015 Metoxypetalum 1994 Orinoquia 2015 Peruviasclepias 2015 Pruskortizia 2015 Pseudolachnostoma 2012 Rhytidostemma 2013 Riparoampelos 2015 Rotundanthus 2015 Suberogerens 2015 Vulcanoa 2015 Species 305 HONORS Morilloa Fontella, Goes & Caceres 2014 (Apocynaceae)
Gerhard Malnic
Gerhard Malnic, Austrian-born Brazilian renal physiologist (Milano 25 September 1933 – São Paulo 05 February 2023) From Slovenian father and Austrian mother Authored over 120 works Discovered how occurs the potassium excretion in renal tubules With G. Giebisch & R. Klose developed an improved microflame photometer (1964) and perfected the method of performing micropuncture and microperfusion studies on the distal tubule, which elucidated the role of each nephron segment in determining urinary potassium excretion (1964-6) With G. Giebisch demonstrated that potassium is secreted down its electrochemical gradiente and linked indirectly to the rate of sodium reabsorption With G. Giebisch proposed that potassium was reabsorbed downstream of the distal tubule Showed that when sodium reabsorption is stimulated the increase in potential difference enhanced the electrochemical driving force and stimulated potassium secretion With G. Giebisch developed a method for sodium and potassium microdosage in kidney With A. Carvalho da Silva developed a fluorometric method for tiamine (B1 vitamine) With F. Lacaz Vieira authored a work about secretion mechanisms of water in kidney with more than 300 citations The one researcher in the world to use microperfusion of potassium dosage employing microelectrodes First work employing micropuncture in the functional study of glomerulopathies With M.M. Machado & A.S. Rocha. Micropuncture study in rats with experimental glomerulo-nephrites. Kidney Intern. 3(1):14, 1973
Geraldo da Costa Barros Muniz
Geraldo da Costa Barros Muniz, Brazilian geologist and paleontologist (Maceió 12 March 1924 – Recife 13 October 2013) DESCRIBED INVERTEBRATE FOSSIL TAXA Mollusca Genus Brasilicardium 1993 Species Acesta paraibensis 1993 Bellifusus parvus 1993 Calyptraea paraibensis 1993 Calyptraphorus itamaracensis 1993 Camptonectes (Camponectes) moderatus 1993 Cancellaria paraibensis 1993 Cerithiella (Cerithiella) pernambucensis 1993 Cerithium paraibense 1993 Coleopis (Coleopis) brasiliensis 1993 Crassattella paraibensis 1993 Cypricardella petrolandensis 1979 Cyprimeria paraibensis 1993 Dentalium mauryae 1976 with Penna-Neme Exogyra (Exogyra) gramamensis 1993 Fimbria beurleni 1993 Fusinus delicatus 1993 Gaudryceras brasiliense 1993 Granocardium (Criocardium) paraibense 1993 Keilostoma magna 1993 Legumen brasiliense 1993 Leptodesma langei 1979 Leptosolen paraibensis 1993 Linearia (Liothyris) brasiliensis 1993 Liopistha riogramamensis 1993 Lithophaga paraibensis 1993 Lopha aracajuensis 1984 Mataxa paucilirata 1993 Mesalia garapuensis 1993 Mesalia priscilae 1993 Mesocallista mauryae 1993 Neithea latericostata 1993 Otostoma paraibense 1993 Paleopsephaea itamaracensis 1993 Pseudoliva bellecompta 1993 Pseudomalaxis pauciornata 1993 Pterodonta gramamensis 1993 Pugnellus assisi 1993 Pyropsis axiornata 1993 Sanguinolites pernambucensis 1979 Sanguinolites rochacamposi 1979 Sinonia paraibensis 1993 Spathella brevis 1979 Streblopteria antiqua 1979 Strombus latiaperturalis 1993 Trachytriton pernambucense 1993 Turritella nordestensis 1993 Woodsella brasiliense 1993 Subspecies Turritella antigona itamaracensis 1993 Ichnofossil Species Bifungites cruciformis 1982 Cochlinus lagartensis 1980 Cochlinus sousensis 1983 Merostomichnites piauiensis 1988 Rusophycus piauiensis 1982 Sublorenzinia pauciradiata 1982 Tasmanadia brasiliensis 1984 Brachiopoda Species Camarotoechia itamaracensis 1993 Bryozoa Species Lunulites (Heteracis) barbosae with Buge 1974