Polymorphisme ABO chez les donneurs de sang au Maroc

Habti, Norddine; Nourichafi, Nadia; Benchemsi, N.

doi:10.1016/j.tracli.2004.01.002

Cited by 9 publications

(6 citation statements)

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“…The tendency of O > A > B > AB found in our population has been reported in all North African populations (Aireche & Benabadji, 1994; Said et al. , 2003; Habti et al. , 2004).…”

Section: Discussionsupporting

confidence: 86%

“…Apart from their critical importance in blood transfusion, these genetically inherited antigens are also used in population studies and thought to be linked with susceptibility to particular diseases (Avent & Reid, 2000; Westhoff, 2004; Daniels, 2005). Their frequencies in human populations vary throughout the world (Cheikha & Khayat, 1986; Habti et al. , 2004; Loua et al.…”

Section: Introductionmentioning

confidence: 99%

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Frequencies and ethnic distribution of ABO and Rh(D) blood groups in Mauritania: results of first nationwide study

Hamed¹,

Bollahi²,

Abdelhamid

et al. 2011

Int J Immunogenetics

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There is no data available on the ABO/Rh(D) frequencies in the Mauritanian population. We retrospectively analysed records of a 5-year database that contained ABO/Rh phenotype and ethnic origin of 10 116 volunteers giving blood at the national blood transfusion centre to derive the frequencies of ABO/Rh(D) groups in the Mauritanian population. The two race categories in the country and their sub-ethnic groups: the Moors (whites and black) and the black Africans (Pulhars, Soninkes and Wolof) were included in this study. Globally, group O had the highest frequency (49.10%) followed by A (28.28%), B (18.56%) and AB (4.05%). This order more common in North African populations was found in four of the five ethnic groups composing our population. Allele frequencies were, respectively, 70.20%, 17.74% and 12.04% giving the same order of O > A > B. We observed no significant variation in these frequencies between the different ethnic groups. Rhesus study showed that with a percentage of 94.23% Rh(D) positive is by far the most prevalent, while Rh(D) negative is present only in 5.77% of the total population. This frequency distribution supports the mixed-race composition of the Mauritanian population.

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“…The tendency of O > A > B > AB found in our population has been reported in all North African populations (Aireche & Benabadji, 1994; Said et al. , 2003; Habti et al. , 2004).…”

Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Frequencies and ethnic distribution of ABO and Rh(D) blood groups in Mauritania: results of first nationwide study

Hamed¹,

Bollahi²,

Abdelhamid

et al. 2011

Int J Immunogenetics

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“…In United States and Europe, the ethnic and racial differences in distribution of ABO and RHD phenotypes are recognized (Garratty, Glynn, & McEntire, ; Sokal, ). A gradient in distribution of ABO alleles from north to south of Morocco is established by several studies (Benahadi et al, ; Habti, Nourichafi, & Benchemsi, ; SmailChadli, Belhachmi, & Izaabel, ). In Guinean population, 22%, 24%, 5% and 49% belongs respectively to blood groups A, B, AB and O (Loua, Lamah, Haba, & Camara, ).…”

Section: Introductionmentioning

confidence: 88%

Distribution of ABO and RHD blood group antigens in blood donors in Burkina Faso

Sawadogo

Nébié

Millogo³

et al. 2018

Int J Immunogenetics

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Geographical distribution of ABO and RHD antigens is important for blood transfusion services and population genetics studies. There are few data on this topic in Burkina Faso, a multi‐ethnic country. Our study aims at reporting phenotypic and allelic frequencies of ABO and RHD blood groups among voluntary blood donors from various ethnical regions of Burkina Faso. We conducted a cross‐sectional study including 81,486 blood donors. ABO allelic frequencies were determined using the Bernstein method. Differences in phenotypic distribution of blood groups were assessed using the chi‐square test; a p value <0.05 being considered as statistically significant. We noticed that O+>B+>A+>AB+>O‐>B‐>A‐>AB‐ in our population. Phenotypic frequencies of blood groups A, B, O and AB were respectively 22.54%, 28.56%, 43.30% and 5.60%. RHD+was 92.24%. The allelic frequencies of A, B, O and D were respectively 0.1524; 0.1887; 0.6590 and 0.7214. We noticed statistical differences (p < 0.05) between these administrative regions which corresponded roughly to some natural ethnic areas. Indeed, the phenotype O was more frequent in the Central‐west, Central and East regions corresponding to “Mossi,” “Gourounsi,” “Gourmantché” areas while the phenotype A and AB were more reported in “Boucle du mouhoun” and “Hauts‐Bassins” regions where we have “Bwaba” and “Bobo.” The phenotype O negative was less frequent in “Bwaba.” Our study provides interesting information to blood services that will allow them to better refine their donor recruitment strategies.

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“…The phenotypic frequencies among the Moroccan blood donors display the dominance of O allele followed by A allele in concordance with the previous studies led in the Maghreb countries. These results asserted the intermediary average values between the Black sub‐Saharan and the Caucasians . The genotypic study revealed that ABO*A 101 allele is more frequent than ABO*A 201 and ABO*A 102 alleles.…”

Section: Discussionmentioning

confidence: 77%

“…Weak ABO blood groups are depicted following either discordance between globular and plasmatic tests or between results obtained with different reagents. Several studies have allowed us to determine the phenotypic frequencies of ABO blood groups as well as their distribution in different Moroccan regions . However, there exist no detailed studies concerning ABO genetic polymorphism in Morocco.…”

Section: Introductionmentioning

confidence: 99%

Molecular polymorphism of the ABO system in Moroccan blood donors suggesting an A₂ allele depression by B allele

Zarati

Achtak

Talbi

et al. 2016

ISBT Science Series

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Background Several previous studies have determined the phenotypic and genetic frequencies of ABO blood groups as well as their distributions in different regions of Morocco. However, there are no detailed published data concerning ABO genetic polymorphism up to date. Regarding the ABO system importance in transfusion medicine and anthropology. Our aim is to determine the ABO phenotypic and genetic polymorphism within Moroccan blood donors. Subjects and Methods The ABO phenotype was determined using Olympus PK 7300 Automate and two lots of reagents. Genotyping of 120 subjects taken randomly and of 60 subjects with AB blood groups was performed by allele‐specific polymerase chain reaction (AS‐PCR) technique. The direct sequencing concerned five DNA of individuals whose genotypes were undetermined by AS‐PCR. Results The ABO allelic frequencies found among 9271 blood donors are 0·681, 0·205 and 0·114 for O, A and B alleles respectively. A total of 10 alleles and 20 genotypes have been revealed in 120 blood donors. The ABO genetic frequencies of which are 0·346, 0·233, 0·121, 0·113, 0·058, 0·021, 0·0125, 0·0042, 0·0042 and 0·0042 for ABO*O02, ABO*O01, ABO*B101, ABO*A101, ABO*A201, ABO*A102, ABO*O03, ABO*O306, ABO*O107 and ABO*Onv alleles respectively. Furthermore, our results suggested the existence of A2 allele depression by B allele among 16·18% of AB subjects. This depression concerns 96·66% among A201/B101 and 3·34% among A206/B101 subjects. Conclusion This study is the first in Morocco concerning the ABO genetic polymorphism. The direct sequencing of ABO gene taking into account a large population lets us precise the genetic diversity and consolidate the hypothesis of the existence of the A2 allele depression by B allele within the Moroccan population.

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Polymorphisme ABO chez les donneurs de sang au Maroc

Cited by 9 publications

References 1 publication

Frequencies and ethnic distribution of ABO and Rh(D) blood groups in Mauritania: results of first nationwide study

Frequencies and ethnic distribution of ABO and Rh(D) blood groups in Mauritania: results of first nationwide study

Distribution of ABO and RHD blood group antigens in blood donors in Burkina Faso

Molecular polymorphism of the ABO system in Moroccan blood donors suggesting an A₂ allele depression by B allele

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Polymorphisme ABO chez les donneurs de sang au Maroc

Cited by 9 publications

References 1 publication

Frequencies and ethnic distribution of ABO and Rh(D) blood groups in Mauritania: results of first nationwide study

Frequencies and ethnic distribution of ABO and Rh(D) blood groups in Mauritania: results of first nationwide study

Distribution of ABO and RHD blood group antigens in blood donors in Burkina Faso

Molecular polymorphism of the ABO system in Moroccan blood donors suggesting an A2 allele depression by B allele

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Molecular polymorphism of the ABO system in Moroccan blood donors suggesting an A₂ allele depression by B allele