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14 November 2019 | Story Charlene Stanley | Photo Supplied
DIABETES read more
The modern clinical research facilities at FARMOVS where the two ground breaking diabetes studies will be conducted.

Diabetes is no longer seen simply as a disease, but as a worldwide epidemic, with alarming increases recorded in both developed and developing countries over the past few years.

About 3,5 million South Africans have diabetes, and many more are unaware that they have it. 

The FARMOVS clinical research facility on the Bloemfontein Campus of the University of the Free State is currently involved in two exciting research studies that could lead to the development of medication for diabetes sufferers burdened by some of its most common complications.

Diabetes in a nutshell

Diabetes is a group of diseases where the sugar (glucose) levels in the blood are too high. 

In diabetes mellitus (DM), the high blood-sugar levels are caused by the body not being able to control the blood-sugar levels properly, because of the body’s inability to produce or use insulin. Insulin is a hormone produced by the pancreas and lowers the blood-sugar levels by helping to move the sugar from the blood into the body cells where the sugar is used as a source of energy.

Type 1 DM is often diagnosed in children or teenagers and occurs when the pancreas does not produce any insulin. Type 2 DM occurs when the pancreas does not make enough insulin, or if the body can no longer use the insulin properly; this is often associated with poor lifestyle choices. Where this type of diabetes used to develop primarily in adults of 40 years and older, it is nowadays not uncommon for children to be diagnosed with it.


It is essential that people who are displaying one or more of the risk factors go for screening. This includes a search Physician at FARMOVS. “If DM is detected early enough, up to 90% of people don’t have to use medication but can address it through changes to their diet and exercise programmes.”

High blood-sugar levels essentially damage the blood vessels, which can lead to long-term implications for a person’s heart, kidneys, eyes, and blood circulation. 
The international studies that FARMOVS forms part of, aim to develop treatments for two of the most common secondary conditions that develop as a result of diabetes. 

Diabetic gastroparesis study

A sufferer’s intestines often don’t function properly due to the damage diabetes causes to the nerves which helps the stomach to empty properly; a condition called gastroparesis. Alleviating this condition, typically marked by abdominal pain, bloating, nausea, vomiting, and early satiety (feeling full after eating only a small amount of food), is the aim of one of the studies.

Diabetic impaired kidney function study

A second research study focuses on developing medication that will have a protective effect on a diabetic’s kidneys.  Although nothing can be done to reverse kidney damage, it is hoped that the treatment will slow down kidney degradation.

Focus on prevention

“Both of these studies are aimed at giving diabetics an increased quality of life, and by no means constitute a cure for their condition,” says Dr Van Jaarsveld.
 “The solution lies in combining the correct and committed use of medication with a decreased calorie intake and an increase in exercise – even if it’s just 30 minutes three times a week.”

Value of educating sufferers

A major benefit for participants in the FARMOVS diabetes research trials, is that they gain valuable insight in their own condition.
Diabetes has been called the ‘silent disease’, since sufferers initially have no symptoms.  For that reason, when the average patient is diagnosed with the disease, he/she already has had it for 10 years.   

For me, diabetes is such a sad disease – especially when you see patients with amputated body parts, knowing that it could have been prevented. It is really up to each individual to take responsibility for their own health,” Dr Van Jaarsveld concludes.

Diabetics who are interested in becoming part of the research studies can register online at www.farmovs.com, or contact FARMOVS at +27 51 410 3111.

News Archive

Stress and fear on wild animals examined
2013-06-04

 

Dr Kate Nowak in the Soutpansberg Mountain
Photo: Supplied
04 June 2013

Have you ever wondered how our wild cousins deal with stress? Dr Kate Nowak, visiting postdoctoral researcher at the Zoology and Entomology Department at the UFS Qwaqwa Campus, has been assigned the task to find out. She is currently conducting research on the effects that stress and fear has on primate cognition.

The Primate and Predator project has been established over the last two years, following Dr Aliza le Roux’s (also at the Zoology and Entomology Department at Qwaqwa) interest in the effects of fear on primate cognition. Dr le Roux collaborates with Dr Russel Hill of Durham University (UK) at the Lajuma Research Centre in Limpopo and Dr Nowak has subsequently been brought in to conduct the study.

Research on humans and captive animals has indicated that stress can powerfully decrease individuals’ cognitive performance. Very little is known about the influence of stress and fear on the cognition of wild animals, though. Dr Nowak will examine the cognition of wild primates during actual risk posed by predators. This is known as the “landscape of fear” in her research.

“I feel very privileged to be living at Lajuma and on top of a mountain in the Soutpansberg Mountain Range. We are surrounded by nature – many different kinds of habitats including a tall mist-belt forest and a variety of wildlife which we see regularly, including samangos, chacma baboons and vervet monkeys, red duiker, rock hyrax, banded mongooses, crowned eagles, crested guinea fowl and cape batis. And of course those we don't see but find signs of, such as leopard, genet, civet and porcupine. Studying the behaviour of wild animals is a very special, and very humbling, experience, reminding us of the diversity of life of which humans are only a very small part,” said Dr Nowak.

At present, the research team is running Giving up Densities (GUD) experiments. This represents the process during which an animal forsakes a patch dense with food to forage at a different spot. The animal faces a trade-off between meeting energy demands and safety – making itself vulnerable to predators such as leopards and eagles. Dr le Roux said that, “researchers from the US and Europe are embracing cognitive ecology, revealing absolutely stunning facts about what animals can and can’t do. Hence, I don’t see why South Africans cannot do the same.”

Dr Nowak received the Claude Leon Fellowship for her project. Her research as a trustee of the foundation will increase the volume and quality of research output at the UFS and enhance the overall culture of research. Her analysis on the effect that stress and fear have on wild primates’ cognition will considerably inform the emerging field of cognitive ecology.

The field of cognitive ecology is relatively new. The term was coined in the 1990s by Les Real to bring together the fields of cognitive science and behavioural ecology.


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