biology

Veena Parnaik

Veena Parnaik is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Veena Parnaik rather than just read about it. In short: Veena Krishnaji Parnaik (born 1953) is an Indian cell biologist and the current Chief Scientist at the Centre for Cellular and Molecular Biology. She obtained her Masters in Science in medicinal biochemistry from the University of Mumbai and received her PhD from Ohio State University before moving back to India to work at the CCMB.

Key takeaways

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Reference excerpt

Veena Krishnaji Parnaik (born 1953) is an Indian cell biologist and the current Chief Scientist at the Centre for Cellular and Molecular Biology. She obtained her Masters in Science in medicinal biochemistry from the University of Mumbai and received her PhD from Ohio State University before moving back to India to work at the CCMB. Her research is focused on understanding the functional role of the nuclear lamina and how defects in it may lead to disorders such as progeria and muscular dystrophy.

Education and career In 1974, Dr. Veena Parnaik obtained her M.Sc from the University of Mumbai. She then traveled to the United States to obtain her PhD at Ohio State University for her research on the enzyme dextransucrase. She received her PhD in 1979 and then in 1980 she traveled back to India to work at the Centre for Cellular and Molecular Biology, (CCMB), in Hyderabad as a research associate. In 1981 she was promoted to scientist and she currently holds the role of Chief Scientist at the institution. Since that time she has been an active member of the Indian Society of Cell Biology and has been a member of the RAP-SAC of National Institute of Immunology in New Delhi and the Centre for DNA Fingerprinting and Diagnostics in Hyderabad.

Research Dr. Parnaik's research is mainly concerned with understanding the functional role of the nuclear lamina, not to be confused with the basal lamina which provides structural support to the extracellular matrix. The nuclear lamina provides structural support to the nucleus and is invaluable in its role in cell differentiation in the embryonic stage and its role in regulating certain cellular events such as cell division and DNA replication. Although her research is concerned with the functional role of the nuclear lamina the applications of her research may provide insight into the causes and genetic origins of laminopathies.

Laminopathies Laminopathies are a group of rare genetic disorders that are caused by defects in genes that code for the nuclear lamina. Symptoms of laminopathy may include muscular dystrophy, diabetes, dysplasia and progeria (premature aging). Although there are a number of rare mutations that may result in laminopathy one of the most well researched causes is a mutation in the gene coding for lamin A/C (LMNA). Dr. Parnaik's research is concerned with discovering the cause of a number of defects on the nuclear level that result from mutations in LMNA that include failure to differentiate in adipose tissue, impaired nuclear integrity, impairment in the cell's ability to respond to DNA damaging agents, and cellular toxicity which may lead to premature aging.

Nuclear Lamins A large role of Dr. Parnaik's research into the nuclear lamina is focused on the nuclear lamins, fibrous proteins found in the nuclear lamina that provide structural support and are essential for proper cell differentiation and gene regulation. Through her research, Dr. Parnaik has made considerable progress in understanding the role of nuclear lamins during embryonic development. She identified human lamin A/C as being invaluable to proper embryonic development by demonstrating that depletion leads to improper cell differentiation in stem cells. In cells where lamin A/C has been depleted the stem cells fail to differentiate into endoderm, mesoderm and ectoderm. In addition to stem cell differentiation, Dr. Parnaik's research has also shown a relationship between lamin A/C and cyclin D3. From her research, Dr. Parnaik pointed towards a complex that formed between lamin A/C and cyclin D3 that played an important role in muscle cell differentiation. Dr. Parnaik's research may pave the way to new understanding of how cell's differentiate in the embryonic stage and may provide insight into how mutations and deletions in these molecules may explain certain embryonic defects and failures to differentiate.

Honors and awards Dr. Parnaik has served on the Executive Committee of the Indian Society of Cell Biology for numerous years (1991-1994, 2003-2005, and 2007-2009) and she served as the president of the Society from 2011 to 2013. In 2004 she was elected Fellow of the Indian National Science Academy in New Delhi and in 2008 she was elected Fellow of the Indian Academy of Sciences in Bangalore. In 2011 she received the JC Bose Fellowship. Dr. Parnaik has also received a number of prestigious awards including the Shakuntala Devi Amirchand Prize of ICMR (1992), the Dr. PA Krup Lecture Award of Society of Biological Chemists for India (1997) and the Professor SP Ray-Chaudhuri Lecture Award of Indian Society of Cell Biology (2010).

References

Worked examples

Example 1 — a first encounter with Veena Parnaik

Start with the simplest possible case. Write down what Veena Parnaik claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Veena Parnaik before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Veena Parnaik ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Veena Parnaik

In research: Veena Parnaik appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Veena Parnaik in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Veena Parnaik is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1953 births, 20th-century Indian biologists, 20th-century Indian women scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Veena Parnaik outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Veena Parnaik in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Veena Parnaik means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
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Frequently asked questions

What is Veena Parnaik in simple terms?

Why does Veena Parnaik matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Veena Parnaik?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Veena Parnaik.