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King's College London - Health: More than a medical matter



Anything made of matter can be called a chemical, although the word is generally used to describe pure substances rather than mixtures.

Articles using this Glossary Item

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Scents and sense ability: genes may influence perception of smell

05 August 2013 - by Matthew Thomas

Whether a smell strikes you as fragrant or fetid – or if you even notice it at all – may be influenced by your genes, according to a pair of studies... [Read More]

Induced pluripotent stem cells made without gene manipulation

22 July 2013 - by Holly Rogers

For the first time, scientists have created induced pluripotent stem cells from adult tissue without adding extra genes... [Read More]

Stem cells could help amputated fingertips regrow

17 June 2013 - by Dr Amina Aitsi-Selmi

Stem cells in the nail bed may be the key to regenerating amputated fingertips, if a study on mice is anything to go by... [Read More]

Autism mechanism goes beyond genes

29 April 2013 - by Dr Daniel Grimes

A study on identical twins with distinct autistic traits suggests that epigenetic factors may be important in understanding how the neurological disorder develops... [Read More]

Single gene mutation may be behind type 1 diabetes for minority of patients

11 March 2013 - by Reuben Harwood

Genetic analysis of a family predisposed to type 1 diabetes (T1D) has uncovered the first kind of T1D to be caused by a single gene mutation... [Read More]

UN report: 'Reasonable' to suspect that common chemicals have 'serious implications' for health and fertility

25 February 2013 - by Antony Blackburn-Starza

Untested synthetic chemicals found in many household and industrial products could be associated with adverse health outcomes, including low fertility, says a report by the United Nations Environment Programme and the World Health Organisation... [Read More]

French sperm counts drop by a third over 17 years

10 December 2012 - by James Brooks

Between 1989 and 2005, the sperm count of French men dropped by a third, according to research... [Read More]

Couples exposed to common chemicals take longer to conceive

19 November 2012 - by Holly Rogers

A preliminary study from the National Institutes of Health (NIH), USA, suggests that environmental pollutants including industrial chemicals and pesticides may be impairing human fertility, despite being banned more than thirty years ago.... [Read More]

Mouse studies suggest fresh approach to fertility preservation

01 October 2012 - by Emma Stoye

Two proteins that kick-start the destruction of damaged mouse eggs have been discovered by scientists. The findings may go on to have applications in fertility preservation for female cancer patients who receive aggressive treatment... [Read More]

Book Review: Embryology at a Glance

03 September 2012 - by Marco Narajos

Most of us, at one point in our lives, have wondered, 'where did I come from?'. The answer we receive differs from one perspective to another. Biologists would most likely recount the complex and intriguing journey of embryology... [Read More]

Podcast Review: The World of Top (Genetics) Models

18 June 2012 - by Dr Zara Mahmoud

The top models featured in the latest Naked Genetics podcast are not the kind that grace the runway – they're the ones that grace our laboratories, providing valuable clues about conditions like Alzheimer's, viral infections and plant diseases... [Read More]

Growth factor from stem cells spurs MS recovery in mice

28 May 2012 - by Dr Lux Fatimathas

A chemical produced by stem cells promotes recovery in mice with the autoimmune neurological disease, multiple sclerosis. Hepatocyte growth factor, which is produced by human mesenchymal stem cells, appeared to both repair existing damage and prevent future neurological harm in a mouse model of the disease... [Read More]

Chemicals in environment can damage fertility - in male sheep

21 May 2012 - by Victoria Burchell

Exposure to low levels of environmental toxins may reduce male sperm counts, research in sheep suggests... [Read More]

TV Review: Health Explained - Epigenetics

16 April 2012 - by Dr Rachael Panizzo

Epigenetics is a complex subject, so explaining it in just two minutes is a big ask. But that's what the short video clip, 'Health explained: epigenetics', on the BBC website attempts to do. Aimed at a general audience, the video succeeds in giving us a very basic introduction, but doesn't manage to capture what is new and exciting about this field of research... [Read More]

The ethics of womb donation and transplantation

01 August 2011 - by Dr Morven Shearer

Last month news broke of an experimental womb transplantation surgery planned for early next year. With it came the possibility of women with an absent or non-functioning uterus carrying a child to term (see Roberts, 2011).... [Read More]

Scientists discover new way to reverse genetic defects

20 June 2011 - by Dr Rebecca Hill

Scientists have discovered a way to bypass the type of mutation that causes about a third of human genetic diseases. Experiments in yeast have shown how chemical modifications can allow a cell's machinery to ignore mistakes in DNA known as nonsense mutations... [Read More]

PCB pollutants linked to IVF failure, study suggests

07 March 2011 - by Dr Lucy Freem

High levels of toxic polychlorinated biphenyls (PCBs), a man-made organic chemical associated with adverse health reactions in humans, in the blood may contribute to embryos failing to implant during IVF, say researchers.... [Read More]

Miserable? It's in your genes, study claims

14 February 2011 - by Dr Lux Fatimathas

US researchers have found a correlation between levels of the brain chemical neuropeptide Y (NPY) and an individual's emotional wellbeing. Mutations in the NPY gene, leading to decreased levels of the molecule, correlated with a decreased ability to deal with stressful situations and an increased susceptibility to depression.... [Read More]

Epigenetic changes linked to obesity

20 September 2010 - by Rosemary Paxman

Chemical modifications to genes over a person's lifetime may influence their weight without changing their inherited DNA sequence, a new study has found. This is the first time long-standing chemical alterations to genes have been linked to body weight and obesity... [Read More]

Prenatal effects on sperm production in adult males

10 May 2010 - by Dr Allan Pacey

Nearly 10 years ago, Professor Niels Skakkebæk from the Copenhagen University Hospital, published details of a new syndrome to account for the apparent increase in problems related to the male reproductive system that had been documented in many countries... [Read More]

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