Usually we say that there are four blood groups: A, b, ab and 0. If we also take into account the negative or positive RH, it would be 8. But the reality is such that There are 48 different conformationsThe latest field, baptized as Negative GuadaIt is just known after the publication of the investigation, which led its authors of 14 years, since a possible new blood type was discovered until it is confirmed.
Only one person is known in the world with this new blood group. This is about Woman from the French island of GuadalupThe genetic analysis shows that it has inherited a responsible mutation Both his father and his mother. None of them already live, and no one else was found with the same blood group. Therefore, despite the future transfers, in other neighbors of the island, the sampling campaign was launched, especially those who have the same origin as the patient. This is important, since right now You can only sacrifice blood for yourself.
It is expected that in this new blood group there are more people, but now in this aspect it is lonely. Until they, it will be necessary to save the samples of the patient’s own negative blood, if he is needed.
How was this new blood type discovered?
It all started 11 years ago, when the patient, then I was 54 years old He passed the usual analysis before surgical intervention. During this analysis, he found his blood Never saw antibodies This seemed to be associated with a blood type.
Blood groups are usually identified using antibodies, since they are precisely the strategy of the body label people and everything you have. Thus, people with a blood group A have anti-B antibodies, people with group B have anti-a antitolics, and those who have group 0 have both types of antibodies. Other antibodies and conformations were discovered, which still brought 47 types of blood groups. But the one that they found in the blood of this patient was completely new.
Unfortunately, at that time there were no resources to study what was clearly a new blood group. It was necessary to wait until 2019, when finally French blood fund He was able to analyze his DNA using high -performance sequencing. Thus, they found one Mutation in the Pigz genome This would lead to a negative Gwada group. In fact, this is a colloquial name that was given. The officer, in fact, is Pigz.
Why was it baptized as a negative Gwada?
Since Pigz is more technically and difficult to remember, it was decided to baptize a new blood group in colloquial speech as Negative GuadaThis field was done on the island, which was originally a patient, and because it is easy to pronounce in all languages. Negative, as in any other blood group, is associated with the lack of protein, known as Rh factor.
The discovery of Gwada Offion was announced in early June in Conferences of the International Blood Transfamation Society (ISBT)spent in Milan. But, as we already expected, the work did not end. He still finds more patients with this new blood group.
Source: Hiper Textual
