Historical review of the Department of Physiology on the 75th anniversary of the Instituto Nacional de Cardiología Ignacio Chávez / Reseña histórica del Departamento de Fisiología en el 75 aniversario del Instituto Nacional de Cardiología Ignacio Chávez

Abstract The Physiology Department has played an important role in the development of physiology in Mexico since its beginnings. It was founded by Dr. Arturo Rosenblueth in 1947. Many of the original researchers participated in the formation of the Mexican Society of Physiological Sciences. Researchers belonging to this department have given origin to an important national research center (CINVESTAV) and to numerous groups and departments within the Instituto Nacional de Cardiología such as the Valves department in the basement of the main building of the institute, the department of molecular biology situated in the Anexo de Investigación, and a laboratory in the translational medicine unit. The physiology department has importantly contributed to the development of research in the Instituto Nacional de Cardiología.

Resumen El Departamento de Fisiología ha desempeñado un papel importante en el desarrollo de la fisiología en México desde sus inicios. Fue fundado por el Dr. Arturo Rosenblueth en 1947. Muchos de sus investigadores originales participaron en el nacimiento de la Sociedad Mexicana de Ciencias Fisiológicas. Fue el origen de un importante centro de investigación a nivel nacional (CINVESTAV) y ha dado lugar a numerosos grupos y departamentos dentro del Instituto Nacional de Cardiología, como el Departamento de Válvulas en el basamento del edificio principal, el Departamento de Biología Molecular ubicado en el Anexo de Investigación y un laboratorio en la Unidad de Medicina Traslacional. El Departamento de Fisiología ha contribuido de manera importante al desarrollo de la investigación en el Instituto Nacional de Cardiología.

Jan Evangelista Purkinje, a brilliant, multifaceted Czech biologist: nerve tissue / Jan Evangelista Purkinje, um brilhante multifacetado biólogo checo: tecido nervoso

Jan Evangelista Purkinje was a Czech physician with an exceptional capacity for innovative thinking, and he was one of the fathers of experimental physiology, experimental pharmacology, experimental psychology, histology, embryology, and physical anthropology. Several achievements are named after him, from his prodigious productivity. Of special interest of this paper was his pioneering role in the rise of experimental physiology, microscopical anatomy, and histological methods by the 1830´s that allowed him define more accurate data concerning the structure of nerve tissue of animals and humans such as the now known "Purkinje's cells" and others cells of the brain. He investigated the structure of neuronal processes, including the dendrites. Purkinje recognized possible functional differences between a variety of types of neurons and speculated about their interrelations. He was one of the great geniuses of science.

Jan Evangelista Purkinje foi um médico checo com excepcional capacidade de pensamento inovador e um dos pais da fisiologia experimental, farmacologia experimental, psicologia experimental, histologia, embriologia e antropologia física. Várias conquistas receberam o nome dele, de sua produtividade prodigiosa. De interesse especial deste trabalho enaltece-se o seu papel pioneiro no surgimento da fisiologia experimental, anatomia microscópica e métodos histológicos na década de 1830. Isso permitiu que ele definisse dados mais precisos sobre a estrutura do tecido nervoso de animais e humanos, como as agora conhecidas "células de Purkinje" e outras células do cérebro. Ele investigou a estrutura dos processos neuronais, incluindo os dendritos. Purkinje reconheceu possíveis diferenças funcionais entre uma variedade de tipos de neurônios e especulou sobre suas inter-relações. Ele foi um dos grandes gênios da ciência.

La metáfora energética del ser humano y su incidencia en el auge de la neurastenia, la neurosis y la depresión / The energy metaphor for the human body and its effect on the rise of neurasthenia, neurosis and depression

Resumen El artículo tiene por objetivo realizar una historia crítica del auge de tres categorías diagnósticas: la neurastenia (fin del siglo XIX), la neurosis (primera mitad del siglo XX) y la depresión (segunda mitad del siglo XX hasta nuestros días). La hipótesis es que su amplia difusión se explicaría debido al vínculo que ellas han tenido con la metáfora energética del ser humano. Desde mediados del siglo XIX, la concepción energética se difundió por la cultura occidental, habilitando ciertas ficciones acerca de lo que somos - dimensión ontológica - y lo que podríamos llegar a ser - dimensión ética. El artículo muestra que estas patologías han codificado y tornado inteligible determinadas trayectorias vitales que no cumplían con los imperativos de tales ficciones onto-éticas.

Abstract This article aims to provide a historical critique of the rise of three diagnostic categories: neurasthenia (late nineteenth century), neurosis (first half of the twentieth century) and depression (mid-twentieth century to the present). The hypothesis is that their broad dissemination can be explained through their link to the energy metaphor for the human body. From the mid-nineteenth century on, the concept of energy spread through western culture, encouraging certain fictions about what we are - the ontological dimension - and what we could be - the ethical dimension. The article shows that these pathologies have codified and made intelligible a set of life trajectories that did not obey the imperatives of those onto-ethical fictions.

La tuba uterina: desde Herófilo a Horacio Croxatto / The uterine tube: from Herophilus to Horacio Croxatto

Las tubas uterinas (TU) son órganos tubulares fundamentales en la reproducción humana. No obstante, recién a mediados del siglo XVII con las investigaciones de Reinier De Graaf se comienza a develar su verdadera función en la reproducción. En este trabajo se resumen las principales contribuciones de Horacio Croxatto Avoni al conocimiento de la morfología y fisiología de la TU humana. Sus principales aportes tienen relación con la fisiología del transporte del cigoto y los gametos a lo largo de la TU.

The uterine tubes (UT) are fundamental tubular organs in human reproduction. However, it was not until the middle of the 17th century that Reinier De Graaf's research began to reveal its true role in reproduction. In this work the main contributions of Horacio Croxatto Avoni toward the knowledge of the morphology and physiology of the human UT are summarized. Its main contributions are related to the physiology of zygote transport and gametes throughout the UT.

Guillain-Barré syndrome: celebrating a century / Síndrome de Guillain-Barré: celebração de um século

ABSTRACT A hundred years ago, Guillain, Barré and Strohl described a syndrome with a predominant motor acute or subacute polyneuritis, albumin-cytologic dissociation in the cerebrospinal fluid, and a benign course. Before them, many other authors, such as Landry, Duménil, Osler, and Grainger Stewart had described similar cases although they had not performed lumbar punctures. In this work, we outline certain features of the beginning of this famous syndrome.

RESUMO Há 100 anos três médicos franceses, Guillain, Barré e Strohl descreveram um tipo de polineuropatia aguda ou subaguda de predomínio motor com dissociação albumino-citológica no líquido cefalorraquiano e de evolução benigna. Antes destes, outros autores, como Landry, Duménil, Chomel, Osler e Grainger Stewart, estudaram casos similares, porém não realizaram punção lombar. Neste trabalho procuramos sintetizar alguns fatos importantes no início da descrição desta síndrome.

Historia de los retos actuales de la Fisiología Experimental / History of the present challenges of Experimental Physiology

Introducción: La fisiología experimental es una ciencia exitosa como muestra el volumen de sus resultados, publicaciones, sociedades, así como el premio Nobel. No obstante, hoy enfrenta nuevos retos. Entre estos: concepciones animistas de nuevo tipo, presiones diversas que dificultan la experimentación y reduccionismo a otras disciplinas. Objetivo: Obtener en la historia las pistas que contribuyan a enfrentar los desafíos de la Fisiología actual. Material y Método. El método histórico-lógico se utilizó, desde la etapa de las cavernas hasta el origen de la Fisiología experimental y su establecimiento definitivo. Resultados: Se encontró una secuencia de apariciones y desapariciones de los retos. La interpretación animista de las funciones comenzó cuando el hombre vivía en cuevas y concluyó en Grecia con los physiologoi. La prioridad proclamada por Aristóteles de la observación catalizó el nacimiento de la Anatomía y se favoreció el reduccionismo de la Fisiología. Poco después del origen de la Fisiología con Harvey (1628), hubo intentos de reducir la Fisiología a leyes físicas (iatrofisica) y químicas (iatroquímica) que fracasaron. Estos fallos guiaron al resurgimiento del nuevo animismo desarrollado por Stahl y Barthez. Finalmente, la consolidación de la fisiología experimental en el siglo XIX significó: a) el fin del reduccionismo; b) la superioridad de la experimentación; c) el colapso del animismo Stahl-Barthez y el preformismo. Conclusiones: La Fisiología enfrenta actualmente desafíos con raíces en el pasado; los retos del presente tienen una secuencia de apariciones y desapariciones(AU)

Introduction: Experiment Physiology is a successful science as it is shown in the amount of results, publications, societies, and the Nobel Prize. However, it faces new challenges today. Among them, we can mention: animist conceptions of a new type, diverse pressures that make experimentation difficult, and reductionism to other disciplines. Objective: To obtain, from history, the clues that contribute to face the challenges of present Physiology. Material and Method: The historical-logical method was used, from the era of the caves to the origin of experimental physiology and its final establishment. Results: A sequence of appearance and disappearance of the challenges was found. The animist interpretation of the functions began when the man used to live in caves, and finished in Greece with the physiologoi. The priority of observation proclaimed by Aristotle catalyzed the beginning of Anatomy, and reductionism benefitted from Physiology. Shortly afterwards the origin of Physiology with Harvey (1628), there were attempts to reduce Physiology to physical (iatrophysics) and chemical laws (iatrochemistry), which both failed. These failures lead to the appearance of the new animism developed by Stahl and Barthez. Finally, the consolidation of experimental physiology in the 19th Century meant: a) the end of reductionism; b) the superiority of experimentation; c) the disappearance of Stahl-Barthez animism, and preformism. Conclusions: At present, Physiology faces challenges that are due to the past; these present challenges have a sequence of appearances and disappearances(AU)

Development of Anatomophysiologic Knowledge Regarding the Cardiovascular System: From Egyptians to Harvey / Evolução do Conhecimento Anatomofisiológico do Sistema Cardiovascular: dos Egípcios a Harvey

Our knowledge regarding the anatomophysiology of the cardiovascular system (CVS) has progressed since the fourth millennium BC. In Egypt (3500 BC), it was believed that a set of channels are interconnected to the heart, transporting air, urine, air, blood, and the soul. One thousand years later, the heart was established as the center of the CVS by the Hippocratic Corpus in the medical school of Kos, and some of the CVS anatomical characteristics were defined. The CVS was known to transport blood via the right ventricle through veins and the pneuma via the left ventricle through arteries. Two hundred years later, in Alexandria, following the development of human anatomical dissection, Herophilus discovered that arteries were 6 times thicker than veins, and Erasistratus described the semilunar valves, emphasizing that arteries were filled with blood when ventricles were empty. Further, 200 years later, Galen demonstrated that arteries contained blood and not air. With the decline of the Roman Empire, Greco-Roman medical knowledge about the CVS was preserved in Persia, and later in Islam where, Ibn Nafis inaccurately described pulmonary circulation. The resurgence of dissection of the human body in Europe in the 14th century was associated with the revival of the knowledge pertaining to the CVS. The main findings were the description of pulmonary circulation by Servetus, the anatomical discoveries of Vesalius, the demonstration of pulmonary circulation by Colombo, and the discovery of valves in veins by Fabricius. Following these developments, Harvey described blood circulation.

O conhecimento da anatomofisiologia do Sistema Cardiovascular (SCV) progride desde o quarto milênio AC. No Egito (3500 AC), acreditava-se que um conjunto de canais conectava-se ao coração, transportando ar, urina, ar, sangue e a alma. Mil anos após, o Corpo Hipocrático, na escola médica de Kós, estabeleceu o coração como o centro do SCV, definindo algumas características deste órgão. O SCV transportava sangue via ventrículo direito pelas veias, e o pneuma via ventrículo esquerdo pelas artérias. Duzentos anos depois, em Alexandria, com o aparecimento da dissecção anatômica do corpo humano, Herophilus descobriu que as artérias eram seis vezes mais espessas que as veias, enquanto que Erasistratus descreveu as válvulas semilunares, enfatizando que as artérias eram preenchidas por sangue quando o ventrículo esquerdo se esvaziava. Duzentos anos depois, Galeno demonstrou que as artérias continham sangue, não ar. Com o declínio do Império Romano, todo o conhecimento médico Greco-romano do SCV foi preservado na Pérsia, e posteriormente no Islã, onde Ibn-Nafis descreveu incompletamente a circulação pulmonar. Aqui, deve-se enfatizar a incompleta descrição da circulação pulmonar por Ibn-Nafis. A ressurgência da dissecção do corpo humano na Europa no século XIV é associada ao renascimento do conhecimento do SCV. Os principais marcos foram a descrição da circulação pulmonar por Servetus, as descobertas anatômicas de Vesalius, a demonstração da circulação pulmonar por Colombo, e a descoberta das válvulas das veias por Fabricius. Tal contexto abriu o caminho para Harvey descobrir a circulação do sangue.

Breve historia del reflejo barorreceptor: de Claude Bernard a Arthur C. Guyton. Ilustrada con algunos experimentos clásicos / A brief history of the baroreceptor reflex: From Claude Bernard to Arthur C. Guyton. Illustrated with some classical experiments

El reflejo barorreceptor es poco conocido por la mayoría de los médicos a pesar de que es fundamental en la estabilización de la presión arterial latido a latido y es crucial para la supervivencia. Su fascinante historia es brevemente revisada en este artículo. En 1852 Claude Bernard descubrió que los nervios simpáticos del cuello inervan los vasos sanguíneos de la piel. En 1932 Edgar Douglas Adrian demostró que los nervios simpáticos que inervan los vasos sanguíneos de la piel descargan en forma espontánea a una frecuencia de cuatro a seis por segundo y de esta forma encontró las bases fisiológicas del tono vasomotor. En el siglo XIX Ludwig Traube y Karl Constantine Ewald Hering descubrieron que la presión arterial fluctúa sincrónicamente con la respiración y Sigmund Mayer observó que también existían oscilaciones más lentas no relacionadas con la respiración. En 1921 Heinrich Ewald Hering mostró la existencia de barorreceptores de alta presión en los senos carotideos y probó que la estimulación de los nervios aferentes que inervan estos receptores induce bradicardia e hipotensión. Estos estudios fueron más tarde avanzados por Corneille Heymans quien ganó el premio Nobel por estos estudios en 1938. En la época de los setentas Cowley y Guyton produjeron denervación sino-aórtica en los perros y de esta manera demostraron la importancia fundamental del reflejo barorreceptor en la estabilización de la presión arterial.

The baroreceptor reflex is poorly known by most physicians even though is fundamental in stabilizing the blood pressure on a beat to beat basis and is crucial for survival. Its fascinating history is briefy reviewed in this article. In 1852 Claude Bernard discovered that the sympathetic nerves of the neck innervate the blood vessels of the skin of the rabbit. Edgar Douglas Adrian in 1932 demonstrated that the sympathetic nerves that innervate the blood vessels discharge spontaneously at a rate of 4-6 per second and thus discovered the physiological basis of the vasomotor tone. In the XIX century Ludwig Traube and Karl Constantine Ewald Hering discovered that blood pressure fluctuates synchronously with respiratory movements and Sigmund Mayer observed that there are also slow non respiratory fluctuations of blood pressure. In 1921 Heinrich Ewald Hering found that high pressure baroreceptors are located in the carotid sinuses and demonstrated that the stimulation of the afferent nerve that innervates it induces bradycardia and hypotension. These studies were further advanced by Corneille Heymans who won the Nobel Prize for these studies in 1938. Later Cowley and Guyton produced sino-aortic denervation in dogs and thereby could demonstrate the fundamental importance of the baroreceptor reflex in the stabilization of blood pressure.

Una visión sucinta de la enseñanza de la medicina a lo largo de la historia: I: desde el Antiguo Imperio Egipcio hasta el siglo XVII / A succinct vision of medical teaching throughout history: I: from the Ancient Egyptian Empire to the XVII century

Para comprender cómo se ha enseñado la medicina a través de los tiempos, es necesario apoyarse en los historiadores que han tratado su evolución y, a partir de ellos, indagar sobre las actitudes de los médicos en su posición como docentes y acerca de cómo era la apropiación del conocimiento en cada época por parte de los estudiantes. En este primer artículo se presenta un recorrido sucinto a través de las diferentes épocas históricas para ver los avances y retrocesos de la enseñanza de la medicina, desde el Antiguo Imperio Egipcio (3000-2500 a. C.) con su gran legado en los papiros, continuando con los grandes progresos de la medicina griega, el oscurantismo en la Edad Media y los cambios hasta el siglo XVII.

In order to understand how medicine has been taught through the years, it is necessary to refer to historians who have approached the evolution of medicine. Taking them as a starting point, it is possible to describe the attitudes of doctors in their role as professors, and the ways in which students acquired knowledge at different moments throughout centuries. This article presents a succinct vision of the advances and retrogressions in medical teaching at different historical moments. It starts with the Ancient Egyptian Empire (3000-2500 b. C.) with its big legacy written on papyruses; continues with the enormous progress of Greek medicine and the obscurity of the Middle Ages, and finishes with the advances until the XVII century.

The Formation and Background of Claude Bernard's General Physiology / 의사학

Claude Bernard, a French physiologist in the nineteenth century, strove to establish experimental physiology as a medical branch and scientific field. In 1854, he started his lecture series on general physiology at the Paris Faculty of Sciences, which was continued at the National Museum of Natural History since 1869 when Bernard's chair was transferred from the Faculty to the Museum. At the Museum, Bernard titled his lecture series the "Phenomena of Life Common to Animals and Plants," which revealed the main characteristic of his general physiology. At that time, physiology was generally considered a medical science which dealt only with the human body. Bernard, on the other hand, came to have the idea that physiology could study the functions of plant, animal, and human bodies in the same manner. Bernard's lectures on general physiology had two distinct phases. At Sorbonne, general physiology was a rather speculative theoretical system. It was mainly because of the fact that he did not have a laboratory at the Faculty of Sciences. There, the lecture dealt only with animal functions, and he had no concern for plant physiology at all. After he moved to the Museum, significant changes occurred. In the new laboratory, general physiology was transformed into a truly experimental science, which dealt with both animals and plants. Protoplasm, a physiological basic unit, replaced tissue, which was basically an anatomical unit that fell short of explaining physiological phenomena. The Museum of Natural History played an important role in this transformation. At the museum, zoologists, botanists, and physiologists worked together, and the peculiar natural history tradition of the institution enabled scientists to study animals and plants at the same time. Although there existed some conflicts between experimentalists and naturalists, Bernard could wisely figure out the problem by asserting that the role of a physiologist was to disclose, by experimentation, the fundamental principles that lay behind the superficial facts of life that were already discovered by natural historians. At the Museum, Bernard could break down the distinction between the animal and plant kingdoms in the domain of experimental physiology, and it can perhaps be considered a step toward the formation of the general science of biology.

Heat and Fever in Ancient Greek Physiology / 의사학

This paper aims at clarifying the relationship of physiological heat and pathological heat(fever) using the theoretical scheme of Georges Canguilhem as is argued in his famous book The Normal and the Pathologic. Ancient authors had presented various views on the innate heat and pathological heat. Some argued that there is only pathological heat while others, like Galen, distinguished two different kinds of heat. Galen was the first medial author who had the clear notion of the relationship between the normal heat and the pathological heat. He conceptualized their difference as the heat conforming to nature (kata phusin) and the heat against nature (para phusin). However, the Peripatetic authors, such as ps-Alexander Aphrodisias, who laid more emphasis on physiology tended to regard pathology in continuation with physiology as Claude Bernard attempted to do it. Therefore, Canguilhem's theoretical scheme turns out to be very useful in analysing the relationship of normal heat and pathological heat as is manifested in ancient Greek physiology.

Quem estudou no Testut / Who studied using the Testut

Os autores revisaram a história de Jean Léo Testut, anatomista francês com grande contribuição ao estudo da anatomia.

The authors reviewed the history of Jean Léo Testut, the french anatomist with great contribution to anatomy study.