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04 November 2024 | Story André Damons | Photo Supplied
Dr Emmanuel Arko-Cobbah
Dr Emmanuel Arko-Cobbah, Senior Lecturer and Medical Specialist in the Department of Surgery at the University of the Fee State (UFS) and a trauma surgeon, has recently been inducted as a Fellow of the American College of Surgeons (ACS).

Dr Emmanuel Arko-Cobbah, Senior Lecturer and Medical Specialist in the Department of Surgery at the University of the Fee State (UFS), says he hopes his induction as a fellow of the American College of Surgeons (ACS), will show the world that South Africa also produces great doctors from whom they can learn.

The ACS is dedicated to improving the care of the surgical patient and safeguarding standards of care in an optimal and ethical practice environment. Dr Arko-Cobbah was inducted on 19 October after a rigorous process. He was part of 1 800 candidates from around the world, but mostly from North America, with about 600 from other countries outside of the US and Canada.

Dr Arko-Cobbah, a trauma surgeon, says it feels surreal as it has always been his dream to become a Fellow of the American College of Surgeons, although it often felt like an impossible dream. “I truly thank God, and I am very grateful, because to me, it feels like it's all part of His plans for me, that is why He is making these things possible for me.

“As a trauma surgeon, it makes me feel I have achieved even beyond our borders, and it gives me the opportunity to also share the knowledge we have locally with the rest of the world. We have a lot to offer, but we tend to get underestimated because of where we’re from,” says Dr Arko-Cobbah.

To become a fellow of the ACS, applicants go through a selection process after applying and then they need to be nominated by three different fellows of the American College who are in good standing. If their nominations get accepted, an interview follows whereafter the reports are reviewed by the committee which then decides the outcome.

South Africa produces great doctors

According to Dr Arko-Cobbah, he hopes to put the UFS on the map with this lifelong fellowship so that the world can know South Africa also produces great doctors and that they can learn from these doctors. “The other side of the coin is for me to inspire others to also aim to get into the American College, and to dream even bigger than this. If I could do this, then anybody can. Partner with God, and dream big dreams, and make big plans. That is what I was taught by Pastor At Boshoff since I was a student, and God has always been faithful.”

After qualifying as doctor and becoming a general surgeon at the UFS, and super specialised as a trauma surgeon, Dr Arko-Cobbah completed a Surgical Leadership Programme with Harvard University in Boston, in the US. “God has always been good to me, and I am forever grateful to the support of my wife and family and continued inspiration and mentorship from Prof André Loubser. I am grateful to the late Prof Theron, and the UFS Surgery Department, past and present, for always pushing me to be better. 

News Archive

Nanotechnology breakthrough at UFS
2010-08-19

 Ph.D students, Chantel Swart and Ntsoaki Leeuw


Scientists at the University of the Free State (UFS) made an important breakthrough in the use of nanotechnology in medical and biological research. The UFS team’s research has been accepted for publication by the internationally accredited Canadian Journal of Microbiology.

The UFS study dissected yeast cells exposed to over-used cooking oil by peeling microscopically thin layers off the yeast cells through the use of nanotechnology.

The yeast cells were enlarged thousands of times to study what was going on inside the cells, whilst at the same time establishing the chemical elements the cells are composed of. This was done by making microscopically small surgical incisions into the cell walls.

This groundbreaking research opens up a host of new uses for nanotechnology, as it was the first study ever in which biological cells were surgically manipulated and at the same time elemental analysis performed through nanotechnology. According to Prof. Lodewyk Kock, head of the Division Lipid Biotechnology at the UFS, the study has far reaching implications for biological and medical research.

The research was the result of collaboration between the Department of Microbial, Biochemical and Food Biotechnology, the Department of Physics (under the leadership of Prof. Hendrik Swart) and the Centre for Microscopy (under the leadership of Prof.Pieter van Wyk).

Two Ph.D. students, Chantel Swart and Ntsoaki Leeuw, overseen by professors Kock and Van Wyk, managed to successfully prepare yeast that was exposed to over-used cooking oil (used for deep frying of food) for this first ever method of nanotechnological research.

According to Prof. Kock, a single yeast cell is approximately 5 micrometres long. “A micrometre is one millionth of a metre – in laymen’s terms, even less than the diameter of a single hair – and completely invisible to the human eye.”

Through the use of nanotechnology, the chemical composition of the surface of the yeast cells could be established by making a surgical incision into the surface. The cells could be peeled off in layers of approximately three (3) nanometres at a time to establish the effect of the oil on the yeast cell’s composition. A nanometre is one thousandth of a micrometre.

Each cell was enlarged by between 40 000 and 50 000 times. This was done by using the Department of Physics’ PHI700 Scanning Auger Nanoprobe linked to a Scanning Electron Microscope and Argon-etching. Under the guidance of Prof. Swart, Mss. Swart en Leeuw could dissect the surfaces of yeast cells exposed to over-used cooking oil. 

The study noted wart like outgrowths - some only a few nanometres in diameter – on the cell surfaces. Research concluded that these outgrowths were caused by the oil. The exposure to the oil also drastically hampered the growth of the yeast cells. (See figure 1)  

Researchers worldwide have warned about the over-usage of cooking oil for deep frying of food, as it can be linked to the cause of diseases like cancer. The over-usage of cooking oil in the preparation of food is therefore strictly regulated by laws worldwide.

The UFS-research doesn’t only show that over-used cooking oil is harmful to micro-organisms like yeast, but also suggests how nanotechnology can be used in biological and medical research on, amongst others, cancer cells.

 

Figure 1. Yeast cells exposed to over-used cooking oil. Wart like protuberances/ outgrowths (WP) is clearly visible on the surfaces of the elongated yeast cells. With the use of nanotechnology, it is possible to peel off the warts – some with a diameter of only a few nanometres – in layers only a few nanometres thick. At the same time, the 3D-structure of the warts as well as its chemical composition can be established.  

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za  
18 August 2010
 

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