Author: Rachel Crowley

Rachel enjoys using her medicinal chemistry training to create accessible public health content and engaging science education resources.

Posts by Rachel Crowley

What Is Pharmacology?

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A collage of different cartoon images showing scientists working across a spectrum of basic science, chemistry, biology, research, genetics, and medicine, illustrated by images of an EKG readout, test tubes and a pipette, a syringe and medicine bottle, a chemical structure, a microscope, a pill bottle and pill, a data chart, a hospital, a DNA strand, and a human silhouette.
Credit: iStock.

Pharmacology is the study of how molecules, such as medicines, interact with the body. Scientists who study pharmacology are called pharmacologists, and they explore the chemical properties, biological effects, and therapeutic uses of medicines and other molecules. Their work can be broken down into two main areas:

  • Pharmacokinetics is the study of how the body acts on a medicine, including its processes of absorption, distribution, metabolism, and excretion (ADME).
  • Pharmacodynamics is the study of how a medicine acts in the body—both on its intended target and throughout all the organs and tissues in the body.
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Copper Keeps Us Going

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Copper pipes, copper wires, copper…food? Copper is not only a useful metal for conducting electricity, but it’s also an essential element we need in our bodies for a variety of important activities—from metabolizing iron to pigmenting skin.

A graphic showing copper’s symbol Cu, atomic number 29, and atomic weight 63.546, all connected by lines to illustrations of the Statue of Liberty, a lightning bolt labeled “conductor,” and a crab labeled “blue blood.” New York’s Statue of Liberty is coated in 80 tons of copper, and oxidation causes its green color. Copper is an excellent conductor of electricity. It’s used in wiring, electronics, and lightning conductors. Crustaceans use copper complexes to transport oxygen in their blood, giving it a blue color. Across the bottom is the logo for the Royal Society of Chemistry celebrating IYPT 2019, the Compound Interest logo, and #IYPT2019. Copper is required to keep your body going. Enzymes that use copper are called cuproenzymes, and they catalyze a wide range of reactions, including making neurotransmitters and connective tissue. The element is found on the Statue of Liberty’s covering, in wiring and electronics, and in the blue blood of crustaceans. Credit: Compound Interest CC BY-NC-ND 4.0. Click to enlarge.
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In Other Words: What’s It Mean to Be Organic?

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The word organic is often used to talk about fruits and vegetables that have been produced in a specific way, typically without the use of synthetic fertilizers and pesticides. But to chemists, organic refers to carbon-containing compounds that are the basis for all living organisms. Ironically, the chemicals prohibited in the farming of organic produce are usually organic molecules.

Below the title, Organic: In Other Words, two images are separated by a jagged line. On the left is a picture of green fruits and vegetables including kiwis, apples, bell peppers, and Brussel sprouts. On the right is a conical flask filled with blue liquid sitting on a paper with chemical structures on it. Under the images, text reads: Did you know? In chemistry, organic refers to carbon-containing compounds that are the basis for all living organisms.
Credit: NIGMS.

Organic chemists study, create, and explore carbon-containing molecules. Most organic molecules contain carbon and hydrogen, but they can also include other elements like nitrogen, oxygen, phosphorus, and more. Organic compounds are all around you, from the phospholipids in your body that make up your cell membranes and the NSAID pain reliever that might be in your medicine cabinet to the fabric of the shirt you’re wearing.

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Pump Up the Potassium

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The element potassium plays a pivotal role in our bodies. It’s found in all our cells, where it regulates their volume and pressure. To do this, our bodies carefully control potassium levels so that the concentration is about 30 times higher inside cells than outside. Potassium works closely with sodium, which regulates the extracellular fluid volume and has a higher concentration outside cells than inside. These concentration differences create an electrochemical gradient, or a membrane potential.

A graphic showing potassium’s symbol K, atomic number 19, and atomic weight 39.098 connected by lines to illustrations of soap, a nerve cell, and a banana. Potassium hydroxide is used to make liquid soaps. Potassium compounds are also used in fertilizers. In humans, potassium ions regulate blood pressure and transmission of nerve impulses. The potassium-40 isotope causes low level radioactivity in bananas and in humans and animals. Across the bottom of the graphic is the logo for the Royal Society of Chemistry celebrating IYPT 2019, the Compound Interest logo, and #IYPT2019. Potassium is the primary regulator of the pressure and volume inside cells, and it’s important for nerve transmission, muscle contraction, and more. Credit: Compound Interest CC BY-NC-ND 4.0. Click to enlarge.
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Manganese: The Magical Element?

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The element manganese is essential for human life. It’s aptly named after the Greek word for magic, and some mysteries surrounding its role in the body still exist today—like how our bodies absorb it, if very high or low levels can cause illness, or how it might play a role in certain diseases.

A graphic showing manganese’s symbol Mn, atomic number 25, and atomic weight 54.938 connected by lines to illustrations of steel railways, a bone, and a drinking can. Manganese steel contains ~13 percent manganese. It’s very strong and used for railways, safes, and prison bars. Manganese is essential for organisms. It’s needed for strong bones, and many enzymes also contain it. Drink cans are made with an alloy of aluminum and manganese, which helps prevent corrosion. Across the bottom of the graphic are the logo for the Royal Society of Chemistry celebrating IYPT 2019, the Compound Interest logo, and #IYPT2019. Manganese is necessary for metabolism, bone formation, antioxidation, and many other important functions in the body. The element is found in strong steel, bones and enzymes, and drink cans. Credit: Compound Interest CC BY-NC-ND 4.0. Click to enlarge.
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Innovating Education, Outreach, and Mentorship With Organic Chemist Neil Garg

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Dr. Garg holding a plastic model of a molecule.
Dr. Neil Garg. Credit: Penny Jennings.

“An important part of being in science is being in a community,” says Neil Garg, Ph.D., Distinguished Professor and chair of the department of chemistry and biochemistry at the University of California Los Angeles (UCLA). That philosophy has led him to prioritize mentorship, diversity, and inclusion—while maintaining research excellence—as well as re-envisioning what it means to educate students and the public.

Falling in Love With Chemistry

Science was always a part of Dr. Garg’s childhood. He participated in science fairs as a kid but says he did it for the community and not necessarily for the love of science. “When I look back on those projects, they were always with friends—never by myself,” he says. His parents were both scientists and strongly encouraged him to go into medicine, and although he became a premed major at New York University (NYU), he ultimately chose a different path.

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Got Calcium?

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Someone’s hand moving to scroll through this blog post is possible because of a mineral that both gives bones their strength and allows muscles to move: calcium. As the most abundant mineral in our bodies, it’s essential for lots of important functions. It’s found in many foods, medicines, and dietary supplements.

A graphic showing calcium’s symbol “Ca”, atomic number, and atomic weight connected by lines to illustrations of teeth and bones, cheese, and a cement-mixing truck (calcium carbonate is used in construction). Calcium keeps your bones strong, allows your muscles to move, and is important for many other bodily functions. The element is found in foods, medicines, and the world around us. Credit: Compound Interest CC BY-NC-ND 4.0. Click to enlarge.
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A Career Launched Through “Transformative” NIGMS-Funded Training Programs 

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Headshot of Dr. Andrade.
Dr. Brenda Andrade. Credit: Courtesy of Dr. Brenda Andrade.

Brenda Andrade, Ph.D., assistant professor at California State University, Los Angeles (CSULA), wasn’t sure what she wanted to do when she first started community college. Through a program at her high school, she’d participated in Saturday morning science labs on the CSULA campus, and that introduction to science led her to think about pursuing some sort of scientific degree. She recalls flipping through the course catalog to the list of science classes needed to transfer to a 4-year university, and “naively going down the list and taking them.”

When a professor asked her if she’d thought about doing research, she responded, “What’s research?” That professor introduced her to the transfer program between the community college and nearby CSULA, and he encouraged her to apply to the NIGMS-funded Bridges to the Baccalaureate Research Training Program. When she did, she was accepted and began a summer research internship working in the lab of Linda Tunstad, Ph.D., a successful chemist with a similar background to Dr. Andrade’s. “That experience set my career trajectory,” she says. “I saw people like me, other Latinx people and people from underrepresented groups, doing research and thriving, like Dr. Tunstad. It really motivated me.”

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Mentoring: It’s In Our Genes

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Anyone who’s spent time in an academic science lab has probably heard about lab culture. Many labs boast long, rigorous working hours, while others require graduate students and postdoctoral trainees (postdocs) to meet often-unattainable experiment quotas each week. But is sheer quantity really the gold standard we want to hold ourselves to when it comes to training the next generation of scientists?

A gold double helix representing DNA with silhouettes of three people helping one another up to the top of the helix’s backbone.
The #MentorFirst logo. Credit: www.MentorFirst.org.

Neil Garg, Ph.D., Distinguished Professor and chair of the department of chemistry and biochemistry at the University of California Los Angeles (UCLA), and Jen Heemstra, Ph.D., Charles Allen Thomas Professor and chair of the department of chemistry at Washington University in St. Louis, Missouri, think not. In fact, they both felt so strongly that this mindset of training is so outdated and detrimental to academic excellence and integrity that they joined together to create
#MentorFirst, an initiative encouraging academics to embrace mentorship in conjunction with research. “As faculty, both research and mentorship are important,” says Dr. Heemstra. “But it makes a huge difference which one we put first.”

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Mentoring Month: NIGMS-Funded Researchers Make Mentoring Meaningful

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Mentoring is a vital part of training the next generation of scientists. Through a variety of programs ranging from the undergraduate to faculty levels, NIGMS fosters the training and the development of a strong and diverse biomedical research workforce.

To celebrate National Mentoring Month, we’re highlighting a few of the many NIGMS-funded researchers who emphasize being great mentors. Check out the snapshots of our interviews with these mentors to see what they think about mentoring and to access and read their full stories.


A headshot of Dr. Bohannon wearing a lab coat.
Dr. Julia Bohannon. Credit: Vanderbilt University Medical Center.

Scientist Studies Burn Therapies After Being Severely Burned as a Child
Julia Bohannon, Ph.D., inspired by her own experience of being severely burned as a child, researches therapies that could prevent patients with burns from developing infections. Dr. Bohannon also mentors students, particularly those who hope to be both parents and scientists. “I’ve had a lot of women ask me for advice on how to be a mom and pursue a career in academia, and it’s been a really cool experience to be able to share that with students and trainees,” she says.

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