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Washington, Dec 31 : A researcher has discovered a basic cellular process that may contribute to the development of schizophrenia.

Now, Prof. Illana Gozes from the Sagol School of Neuroscience at Tel Aviv University has discovered that an important cell-maintenance process called autophagy is reduced in the brains of schizophrenic patients.

Autophagy is the process in which a membrane engulfs and consumes the clutter and it is essential to maintaining cellular health. But when autophagy is blocked, it can lead to cell death.

Washington, Dec 31 : Researchers have tried to explain how nicotine exploits the body's cellular machinery to promote addiction.

According to the Center for Disease Control and Prevention, nicotine activates receptors known as nAChRs and, remarkably, unlike most other drugs of abuse, it acts as a "pharmacological chaperone" to stabilize assembly of its receptors within the Endoplasmic Reticulum (ER) and increase their abundance at the cell surface (up-regulation).

Up-regulation of nAChRs plays a major role in nicotine addiction and, possibly, in the decreased susceptibility of smokers to Parkinson's disease.

Mumbai, Dec 31 - The year 2013 saw several chartbusters, but the melodious and soulful "Tum hi ho" from "Aashiqui 2" seems to have multiple fans in the Indian music industry.

Here's a look at which Bollywood musician, singer and writer liked which songs in the year gone by:

* Shankar Mahadevan: "Zinda" ("Bhaag Milkha Bhaag"), "Ilahi" ("Yeh Jawaani Hai Deewani"), "Alvida" ("D-Day") and "Lungi dance" ("Chennai Express")

London, December 31 : Selena Gomez came to a suicidal fan's defense and blasted an abusive Instagram user for bullying her.

The 21-year-old singer leaped to the suicidal fan's aid, who posted a scar on her left arm along with a caption revealing her suicidal thoughts, and told the abusive user to "stop being a fan", the Mirror reported.

The ' Come and Get It ' singer told the bully to stop using her name because she doesn't want them as a fan.

She added that she encourages love, confidence and kindness and snubbed the provoking user, who mocked the fan and urged her to cut herself.

London, Dec 31 : Kelly Brook is terrified that her sex secrets co

The government on Monday advised tax evaders to either clear their dues by Tuesday or face stern penal action, including arrest and prosecution.

Revenue Secretary Sumit Bose said that the government would start taking stern action against service tax evaders from January 1, 2014.

Speaking to reporters, Bose said, "I would like to advise that from January 1, 2014 stern action will be taken against service tax evaders and provisions in the Finance Act relating to arrest and prosecution will be enforced in right earnest."