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Walter Edward Dandy (1886-1946)
Walter Edward Dandy studied abnormalities in the developing human brain in the United States in the twentieth century. He collaborated with pediatrician Kenneth Blackfan to provide the first clinical description of Dandy-Walker Syndrome, a congenital brain malformation in which the medial part of the brain, called the cerebellar vermis, is absent. Dandy also described the circulation of cerebral spinal fluid, the clear, watery fluid that surrounds and cushions the brain and spinal cord.
Format: Articles
Subject: People
"The Association between Depressive Symptoms and Social Support in Taiwanese Women During the Month" (2004), by Shu-Shya Heh et al.
In 2004, Shu-Shya Heh, Lindsey Coombes, and Helen Bartlett studied the association between Chinese postpartum (post-childbirth) practices and postpartum depression in Taiwanese women. The researchers surveyed Taiwanese women about the social support they received after giving birth and then evaluated the depression rates in the same women. Heh and her colleagues focused on the month following childbirth, which according to traditional Chinese medicine, is an important period that warrants a set of specialized practices to aid the woman's recovery.
Format: Articles
Subject: Experiments
William Withey Gull (1816-1890)
William Withey Gull studied paraplegia, anorexia, and hormones as a physician in England during the nineteenth century. In addition to caring for patients, he described the role of the posterior column of the spinal cord in paraplegia, and he was among the first to describe the conditions of anorexia and of hypochondria. He also researched the effects of thyroid hormone deficiencies in women who had malfunctioning thyroid glands.
Format: Articles
Subject: People
Katharina Dorothea Dalton (1916–2004)
Katharina Dorothea Dalton was a physician in England in the twentieth century who defined premenstrual syndrome (PMS) as a cluster of symptoms suspected to begin one to two weeks before menstruation and disappear upon the onset of a new menstrual cycle. Prior to Dalton, there was little research on pre-menstrual issues and those that existed linked the problem to excessive water retention or estrogen. Dalton hypothesized that PMS resulted from a deficiency in the hormone progesterone and advocated for hormone replacement therapy to lessen the symptoms of the syndrome.
Format: Articles
Subject: People
“Kangaroo Care Is Effective in Diminishing Pain Response in Preterm Neonates” (2003), by Celeste Johnston, Bonnie Stevens, Janet Pinelli, Sharyn Gibbins, Francoise Filion, Anne Jack, Susan Steele, Kristina Boyer, and Annie Veilleux
In the 2003 article “Kangaroo Care Is Effective in Diminishing Pain Response in Preterm Neonates”, Celeste Johnston, Bonnie Stevens, Janet Pinelli, and their colleagues evaluate the effectiveness of the Kangaroo Mother Care position in decreasing the pain response of preterm infants who undergo a heel lance procedure for blood collection. Kangaroo Mother Care is a method of treatment for premature and low birth weight infants that involves exclusive breastfeeding and skin-to-skin contact between a mother and her infant in what is called the kangaroo position.
Format: Articles
Subject: Publications
Simone Mary Campbell (1945–)
Simone Campbell is a Roman Catholic sister, attorney, and poet who advocated for social justice, especially equal access to healthcare in the US in the twentieth and twenty-first centuries. Campbell worked as a lawyer and served the working poor in California. As of 2018, she works for NETWORK, a lobbying group in Washington DC that focuses on broadening access to healthcare by lowering costs.
Format: Articles
Subject: People
China's First Baby Conceived through In Vitro Fertilization-Embryonic Transfer, by Zhang Lizhu's Research Team
On 10 March 1988, China's first baby conceived through human in vitro fertilization (IVF) and embryo transfer (ET), commonly referred to as a test-tube baby, was born at the Peking Hospital (PUTH) in Beijing. This birth was reported in numerous media reports as a huge step forward in China's long march to keep pace with global advances in science and technology. Led by gynecologist Zhang Lizhu, the PUTH research team had devoted more than four years to the human IVF-ET project.
Format: Articles
Subject: Experiments, Reproduction
The Notch Signaling Pathway in Embryogenesis
The Notch signaling pathway is a mechanism in animals by which adjacent cells communicate with each other, conveying spatial information and genetic instructions for the animal's development. All multicellular animals utilize Notch signaling, which contributes to the formation, growth, and development of embryos (embryogenesis). Notch signaling also contributes to the differentiation of embryonic cells into various types of cells into various types of cells, such as neurons.
Format: Articles
Subject: Processes
John Craig Venter (1946- )
John Craig Venter helped map the genomes of humans, fruitflies, and other organisms in the US in the late 1990s and early 2000s, and he helped develop an organism with a synthetic genome. In February 2001, Venter and his team published a human genome sequence after using a technique known as Expressed Sequence Tags, or ESTs. Venter worked to bridge commercial investment with scientific research. Venter founded a number of private companies, including the for-profit Celera Genomics, headquartered in Alameda, California, as well as research institutes, such as the not-for-profit J.
Format: Articles
Subject: People
Francois Jacob (1920-2013)
Francois Jacob studied in
bacteria and bacteriophages at the Institut Pasteur in Paris, France,
in the second half of the twentieth century. In 1965, Jacob won the
Nobel Prize in Physiology or Medicine with Andre M. Lwoff and
Jacques L. Monod for their work on the genetic control of enzyme
synthesis. Jacob studied how genes control and regulate metabolic
enzymes in the bacterium Escherichia
coli (E. coli) and in lysogenic
bacterial systems. He contributed to theories of transcriptional gene
Format: Articles
Subject: People
"Evolution and Tinkering" (1977), by Francois Jacob
In his essay Evolution and Tinkering, published in
Science in 1977, Francois Jacob argued that a common analogy
between the process of evolution by natural selection and the
methods of engineering is problematic. Instead, he proposed to
describe the process of evolution with the concept of
bricolage (tinkering). In this essay, Jacob did not deny the
importance of the mechanism of natural selection in shaping complex
adaptations. Instead, he maintained that the cumulative effects of
Format: Articles
Subject: Publications, Theories
Purkinje Cells
Purkinje cells, also called Purkinje neurons, are neurons in vertebrate animals located in the cerebellar cortex of the brain. Purkinje cell bodies are shaped like a flask and have many threadlike extensions called dendrites, which receive impulses from other neurons called granule cells. Each cell also has a single projection called an axon, which transmits impulses to the part of the brain that controls movement, the cerebellum. Purkinje cells are inhibitory neurons: they secrete neurotransmitters that bind to receptors that inhibit or reduce the firing of other neurons.
Format: Articles
Subject: Theories
Paul Kammerer (1880-1926)
Paul Kammerer conducted experiments on amphibians and marine animals at the Vivarium, a research institute in Vienna, Austria, in the early twentieth century. Kammerer bred organisms in captivity, and he induced them to develop particular adaptations, which Kammerer claimed the organismss offspring would inherit. Kammerer argued that his results demonstrated the inheritance of acquired characteristics, or Lamarckian inheritance. The Lamarckian theory of inheritance posits that individuals transmit acquired traits to their offspring.
Format: Articles
Subject: Experiments, People
Ethics of Fetal Surgery
Surgeons sometimes operate on the developing fetuses in utero of pregnant women as a medical intervention to treat a number of congential abnormalities, operations that have ethical aspects. A. William Liley performed the first successful fetal surgery, a blood transfusion, in New Zealand in 1963 to counteract the effects of hemolytic anemia, or Rh disease.
Format: Articles
Subject: Ethics
Your Baby’s Sex: Now You Can Choose (1970), by David M. Rorvik and Landrum B. Shettles
In the book Your Baby’s Sex: Now You Can Choose, David Michael Rorvik and Landrum Brewer Shettles describe methods that couples can use prior to and during conception that will increase the chances of producing a child of their desired sex. Rorvik, a science writer, and Shettles, an obstetrics and gynecology researcher and physician, co-wrote the book. Shettles developed the methods detailed in the book during the 1960s. Although the authors claim a high success rate, some researchers have contested the validity of the methods proposed in Your Baby’s Sex: Now You Can Choose.
Format: Articles
Subject: Publications
“Improved Treatment for Cervical Cancer – Concurrent Chemotherapy and Radiotherapy” (1999), by Gillian Thomas
On 15 April 1999, physician Gillian Thomas published the editorial “Improved Treatment for Cervical Cancer – Concurrent Chemotherapy and Radiotherapy,” henceforth “Improved Treatment,” in The New England Journal of Medicine. In that editorial, she discusses the potential benefits of combining chemotherapy drugs with radiation to treat women with cervical cancer. At the time, healthcare professionals rarely treated cervical cancer by combining chemotherapy or radiation.
Format: Articles
Subject: Publications
“The Intergenerational Effects of Fetal Programming: Non-genomic Mechanisms for the Inheritance of Low Birth Weight and Cardiovascular Risk” (2004), by Amanda J. Drake and Brian R. Walker
In 2004, Amanda J. Drake and Brian R. Walker published “The Intergenerational Effects of Fetal Programming: Non-genomic Mechanisms for the Inheritance of Low Birth Weight and Cardiovascular Risk,” hereafter, “The Intergenerational Effects,” in the Journal of Endocrinology. In their article, the authors assert that cardiovascular disease may develop via fetal programming, which is when a certain event occurring during a critical point of pregnancy affects the fetus long after birth.
Format: Articles
Subject: Publications, Theories, Reproduction
“A Comparison of the Menstruation and Education Experiences of Girls in Tanzania, Ghana, Cambodia, and Ethiopia” (2014), by Marni Sommer, T. Mokoah Nana Ackatia-Armah, Susan Connolly, and Dana Smiles
In their 2014 article “A Comparison of the Menstruation and Education Experiences of Girls in Tanzania, Ghana, Cambodia, and Ethiopia,” hereafter “Comparison of Menstruation,” researchers Marni Sommer, T. Mokoah Nana Ackatia-Armah, Susan Connolly, and Dana Smiles examined various physical and social barriers impacting women’s management of menstrual health across Ghana, Cambodia, and Ethiopia. The authors examined barriers such as misinformation about menstruation and how schools limit girls’ ability to manage their menstrual cycles.
Format: Articles
Subject: Publications
“The Science and Ethics of Making Part-Human Animals in Stem Cell Biology” (2006), by Jason Scott Robert
In 2006, bioethicist Jason Scott Robert published “The Science and Ethics of Making Part-Human Animals in Stem Cell Biology” in The FASEB Journal. There, he reviews the scientific and ethical justifications and restrictions on creating part-human animals. Robert describes part-human animals, otherwise known as chimeras, as those resulting from the intentional combination of human and nonhuman cells, tissues, or organs at any stage of development.
Format: Articles
Subject: Ethics, Publications, Organisms
“Knowledge, Attitudes, and Practices of Health Personnel of Maternities in the Prevention of Mother-to-Child Transmission of HIV...” (2018), by Elie Nkwabong, Romuald Meboulou Nguel, Nelly Kamgaing, and Anne Sylvie Keddi Jippe
In 2018, researchers Elie Nkwabong, Romuald Meboulou Nguel, Nelly Kamgaing, and Anne Sylvie Keddi Jippe published, “Knowledge, Attitudes, and Practices of Health Personnel of Maternities in the Prevention of Mother-To-Child Transmission of HIV in a sub-Saharan African Region with High Transmission Rate: Some Solutions Proposed,” in BMC Pregnancy and Childbirth.
Format: Articles
Subject: Publications, Reproduction, Disorders
Joseph Bolivar DeLee (1869–1942)
Joseph Bolivar DeLee was an obstetrician in the US between the nineteenth and twentieth centuries who advocated for the specialized teaching of medical students in the field of obstetrics to address problems occurring during pregnancy. He claimed obstetricians maintained a wider skillset than midwives, and founded the Chicago Lying-In Hospital to provide affordable obstetric care to women in Chicago, Illinois.
Format: Articles
Subject: People
Jérôme Lejeune (1926−1994)
Jérôme Lejeune was a French physician and researcher who studied genetics and developmental disorders. According to the Jérôme Lejeune Foundation, in 1958, Lejeune discovered that the existence of an extra twenty-first chromosome, a condition called Trisomy 21, causes Down Syndrome. Down Syndrome is a condition present in an individual since birth and is characterized by physical and developmental anomalies such as small ears, a short neck, heart defects, and short height as children and adults.
Format: Articles
Subject: People
The First Successful Cloning of a Gaur (2000), by Advanced Cell Technology
Advanced Cell Technology (ACT), a stem cell biotechnology company in Worcester, Massachusetts, showed the potential for cloning to contribute to conservation efforts. In 2000 ACT researchers in the United States cloned a gaur (Bos gaurus), an Asian ox with a then declining wild population. The researchers used cryopreserved gaur skin cells combined with an embryo of a domestic cow (Bos taurus). A domestic cow also served as the surrogate for the developing gaur clone.
Format: Articles
Subject: Experiments
Agent Orange as a Cause of Spina Bifida
Spina bifida is a birth defect that affects the spines of developing fetuses and infants, and research in the 20th century indicated that chemicals in the herbicide Agent Orange likely lead to the birth defect. People with spina bifida can have nerve damage, paralysis, and mental disabilities. During the Vietnam War in the 1960s, the US military employed Agent Orange and other herbicides to destroy enemy crops and forest cover until 1970.
Format: Articles
Subject: Disorders
Alexandre Lion’s Incubator Charities in Europe (1894–1898)
Alexandre Lion established incubator charities in the late 1890s in France to promote his infant incubator. Lion’s infant incubators kept premature infants warm and improved their chances of survival, but were expensive and not widely used. In order to promote his new technology, Lion displayed incubators that carried premature infants in storefronts and at fairs and expositions throughout Europe. After the public began paying admission to view the infants and incubators, the expositions became incubator charities. Admission fees went directly to the care of the premature infants.
Format: Articles
Subject: Organizations