Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
16 September 2024 | Story André Damons | Photo Supplied
Dr Mampoi Jonas and Prof Jan Du Plessis
Dr Mampoi Jonas, senior lecturer in Paediatric Oncology and Prof Jan Du Plessis, Head of the Paediatric Oncology Unit at the University of the Free State (UFS).

A campaign like Childhood Cancer Awareness Month is vital in creating awareness and educating people about the early signs and symptoms of certain cancers. This can significantly improve the survival rate of young patients. More than 50% of people diagnosed with cancer live for more than five years, and some types of cancer have survival rates as high as 90%.

This is according to Prof Jan Du Plessis, Head of the Paediatric Oncology Unit, and Dr Mampoi Jonas, senior lecturer in Paediatric Oncology, at the University of the Free State (UFS).

“Early diagnosis is crucial because early-stage cancer is more responsive to treatment and less likely to be fatal. Due to the rarity of childhood cancer, many children get misdiagnosed or diagnosed too late with advanced stage disease. The delayed detection and diagnosis diminish the chances of successful treatment.

“Cancer awareness educates families, communities, primary-care nurses and doctors about the early signs and symptoms of certain cancers. When people are aware of these, they are more likely to be on the lookout for them when children present with suspicious clinical symptoms and signs. This also gives parents the confidence to seek help early and even make people better able to support those with the disease once a diagnosis is made,” say the paediatric oncologists.

Recorded incidences on the rise

Though childhood cancer is rare, representing only 1.2% of all cancers worldwide, the recorded incidences are increasing. In the US cancer is the number one cause of death among children, while more than 100 000 children worldwide die because of cancer.

Prof Du Plessis says there are more than 12 major types of childhood cancers and multiple subtypes. The most common types are leukaemia, lymphoma (tumours that begin in the lymph glands), brain tumours, nephroblastoma (cancer of the kidneys) and soft tissue sarcomas. Most cancers in children are thought to develop as a result of mutations in genes that lead to uncontrolled cell growth and eventually cancer.

According to Dr Jonas, most cancers in children are thought to develop because of mutations in genes that lead to uncontrolled cell growth and eventually cancer. Although environmental pollutants have been implicated in some cancers, our experience has been that most paediatric cancers rather occur sporadically.

The reasons for the increase of reported incidence of cancer in children, could be to the increase in population numbers and better awareness of childhood cancers. Another reason might be that more children are being diagnosed who were previously misdiagnosed, explains Prof Du Plessis.

Treatments

Childhood cancers are treated with chemotherapy, surgery and radiation therapy under the care of a paediatric oncologist. Not much can be done about the genetic mutations, but parents can ensure that their children stay safe in the sun (slip, slop, slap campaign – slip on a shirt, slop on some suncream and slap on a hat), get their children vaccinated against HPV infection, help their children stay active and keep a healthy weight and talk to them about smoking.

Prof Du Plessis says the South African paediatric oncology community are currently busy with a few research studies regarding standardising treatment protocols for certain childhood cancers. This is to find out how our children are responding to these protocols and to see if there are different factors affecting the outcomes of South African children. These protocols are based on international treatment protocols with a few adjustments for local circumstances and resources.

They are involved with the Hodgkins lymphoma, neuroblastoma, retinoblastoma, germ cell tumour studies and contributed to a research study evaluating the nutritional status and interventions to improve the nutritional status of local patients. Registrars presented local (Bloemfontein) data at an international conference (SIOP Africa) on hepatoblastomas and osteosarcomas.

“For many childhood cancer may not be a priority or something they would like to think about. Unfortunately for many of my patient’s parents the truth is that the day before their children were diagnosed with cancer, they were also not a cancer parent. However, their lives changed for ever with these four words: ‘Your child has cancer’.

“Childhood cancer is more than chemo and no hair. It is rather about resilience, strength, hope, family, courage, cuddles, and bravery. Your life will be changed for ever if you have ever seen a child fight cancer. Their smiles will make your heart melt and make you realise the importance of the simple things in life,” declare Prof Du Plessis and Dr Jonas.

Early warning signs for parents

The Childhood Cancer Foundation South Africa (CHOC) has a campaign which emphasises the importance of recognising the early warning signs of childhood cancer. They use Siluan’s Early Warning Signs to raise awareness and promote early diagnosis which are:

• S – Seek medical help early for ongoing symptoms
• I – White spot in the eye, new squint, sudden blindness or bulging eyeball.
• L – Lump on the stomach, pelvis, head, arms, legs, testicle, or glands
• U – Unexplained fever present for over two weeks, weight loss, fatigue, pale appearance, easy bruising, and bleeding
• A – Aching bones, joints, back, and easy fractures

• N – Neurological signs, a change in walk, balance or speech, regression, continuous headaches with/without vomiting, and an enlarged head

While these symptoms can be subtle or easily attributed to other causes, it’s important to consult a doctor if they persist or worsen. If you notice any of these symptoms in a child or teen, seek professional medical help promptly. Early detection of cancer saves lives in both children and teens.

News Archive

Fight against Ebola virus requires more research
2014-10-22

 

Dr Abdon Atangana
Photo: Ifa Tshishonge
Dr Abdon Atangana, a postdoctoral researcher in the Institute for Groundwater Studies at the University of the Free State (UFS), wrote an article related to the Ebola virus: Modelling the Ebola haemorrhagic fever with the beta-derivative: Deathly infection disease in West African countries.

“The filoviruses belong to a virus family named filoviridae. This virus can cause unembellished haemorrhagic fever in humans and nonhuman monkeys. In literature, only two members of this virus family have been mentioned, namely the Marburg virus and the Ebola virus. However, so far only five species of the Ebola virus have been identified, including:  Ivory Coast, Sudan, Zaire, Reston and Bundibugyo.

“Among these families, the Ebola virus is the only member of the Zaire Ebola virus species and also the most dangerous, being responsible for the largest number of outbreaks.

“Ebola is an unusual, but fatal virus that causes bleeding inside and outside the body. As the virus spreads through the body, it damages the immune system and organs. Ultimately, it causes the blood-clotting levels in cells to drop. This leads to severe, uncontrollable bleeding.

Since all physical problems can be modelled via mathematical equation, Dr Atangana aimed in his research (the paper was published in BioMed Research International with impact factor 2.701) to analyse the spread of this deadly disease using mathematical equations. We shall propose a model underpinning the spread of this disease in a given Sub-Saharan African country,” he said.

The mathematical equations are used to predict the future behaviour of the disease, especially the spread of the disease among the targeted population. These mathematical equations are called differential equation and are only using the concept of rate of change over time.

However, there is several definitions for derivative, and the choice of the derivative used for such a model is very important, because the more accurate the model, the better results will be obtained.  The classical derivative describes the change of rate, but it is an approximation of the real velocity of the object under study. The beta derivative is the modification of the classical derivative that takes into account the time scale and also has a new parameter that can be considered as the fractional order.  

“I have used the beta derivative to model the spread of the fatal disease called Ebola, which has killed many people in the West African countries, including Nigeria, Sierra Leone, Guinea and Liberia, since December 2013,” he said.

The constructed mathematical equations were called Atangana’s Beta Ebola System of Equations (ABESE). “We did the investigation of the stable endemic points and presented the Eigen-Values using the Jacobian method. The homotopy decomposition method was used to solve the resulted system of equations. The convergence of the method was presented and some numerical simulations were done for different values of beta.

“The simulations showed that our model is more realistic for all betas less than 0.5.  The model revealed that, if there were no recovery precaution for a given population in a West African country, the entire population of that country would all die in a very short period of time, even if the total number of the infected population is very small.  In simple terms, the prediction revealed a fast spread of the virus among the targeted population. These results can be used to educate and inform people about the rapid spread of the deadly disease,” he said.

The spread of Ebola among people only occurs through direct contact with the blood or body fluids of a person after symptoms have developed. Body fluid that may contain the Ebola virus includes saliva, mucus, vomit, faeces, sweat, tears, breast milk, urine and semen. Entry points include the nose, mouth, eyes, open wounds, cuts and abrasions. Note should be taken that contact with objects contaminated by the virus, particularly needles and syringes, may also transmit the infection.

“Based on the predictions in this paper, we are calling on more research regarding this disease; in particular, we are calling on researchers to pay attention to finding an efficient cure or more effective prevention, to reduce the risk of contamination,” Dr Atangana said.


We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept