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Chkioua L, El Fissi H, Amri Y, Sahli C, Bouzid F, Boudabous H, Tbib N, Ferchichi S, Massoud T, Alif N, Laradi S, Ben Abdennebi H. Mucopolysaccharidosis type I: founder effect of the p.P533R mutation in North Africa. BMC Genomics 2024; 25:948. [PMID: 39385097 PMCID: PMC11462811 DOI: 10.1186/s12864-024-10724-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 08/19/2024] [Indexed: 10/11/2024] Open
Abstract
BACKGROUND Mucopolysaccharidosis type I is a lysosomal storage disease resulting from a deficiency in alpha-L-iduronidase (IDUA), which causes the accumulation of partially degraded dermatan sulfate and heparan sulfate. This retrospective study, spanning eight years, analyzed data from 45 MPSI patients. The report aimed to explore the potential origin of the p.P533R mutation in the Maghrebin population by constructing a single-nucleotide polymorphism haplotype around the IDUA gene, in order to propose a molecular proof of a founder effect of the MPSI/p.P533R allele. PATIENTS AND METHODS All of the studied patients were from Libya (2), Mauritania (1) Morocco (21) and Tunisia (21) with first cousins being the most frequent union. The diagnosis of MPSI patients often involves the combination of urinary screening, leukocyte IDUA activity determination, and DNA molecular analysis. In our study, to identify the common p.P533R mutation, we performed both DNA sequencing and tetra-primer ARMS PCR assay. Additionally, Haploview was used to determine the specific haplotype that cosegregates with the p.P533R mutation. Controls were genotyped to ensure that all the SNPs were in Hardy-Weinberg equilibrium. RESULTS In the present report we confirmed the very strong impact of consanguinity on the incidence of MPSI disease. Furthermore, studied families of mixed ancestry shared common and specific haplotype, which was observed in studied populations, suggesting the presence of a founder effect in the North Africa. CONCLUSION The p.P533R missense mutation was identified in each patient originated from Libya, Mauritania, Morocco and Tunisia. Furthermore, these MPSI patients exhibited the same IDUA haplotype. The occurrence of a shared AAGGGTG haplotype, among North African populations may be attributed to substantial historical gene exchange between these groups, likely stemming from migration, inter-ethnic marriage, or other forms of interaction throughout history.
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Affiliation(s)
- Latifa Chkioua
- Research Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy, University of Monastir, Monastir, Tunisia.
| | - Houda El Fissi
- Department of Biology, Laboratory of Biotechnologies and Valorization of Natural Resources, School of Sciences, IBN Zohr University, Agadir, Morocco
| | - Yessine Amri
- Laboratory of Biochemistry (LR 00SP03), Bechir Hamza Children's Hospital, Tunis, Tunisia
- Department of Educational Sciences, Higher Institute of Applied Studies in Humanity Le Kef, University of Jendouba, Le Kef, Tunisia
| | - Chayma Sahli
- Laboratory of Biochemistry (LR 00SP03), Bechir Hamza Children's Hospital, Tunis, Tunisia
| | - Fadoua Bouzid
- Department of Biology, Laboratory of Biotechnologies and Valorization of Natural Resources, School of Sciences, IBN Zohr University, Agadir, Morocco
| | - Hela Boudabous
- Laboratory of Pediatrics, La Rabta Hospital, Tunis, Tunisia
| | - Neji Tbib
- Laboratory of Pediatrics, La Rabta Hospital, Tunis, Tunisia
| | - Salima Ferchichi
- Laboratory of Biochemistry, Farhat Hached Hospital, Sousse, Tunisia
| | - Taieb Massoud
- Laboratory of Biochemistry (LR 00SP03), Bechir Hamza Children's Hospital, Tunis, Tunisia
| | - Najat Alif
- Department of Biology, Laboratory of Biotechnologies and Valorization of Natural Resources, School of Sciences, IBN Zohr University, Agadir, Morocco
| | - Sandrine Laradi
- The Eurofins biomedical laboratory -Interlab, Toulouse, 31000, France
| | - Hassen Ben Abdennebi
- Research Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
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Bahal M, Pande V, Salunkhe S, Dua J, Mane S, Gupta A, Kumar G, Kale S, Garlapati S, Shaligram R. Clinical Profile of Neurodevelopmental Disorders in Children at a Tertiary Care Center. Cureus 2024; 16:e67819. [PMID: 39323725 PMCID: PMC11423788 DOI: 10.7759/cureus.67819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Accepted: 08/26/2024] [Indexed: 09/27/2024] Open
Abstract
Background Neurodevelopmental disorders (NDDs) encompass intricate interactions among genetic, brain, cognitive, emotional, and behavioral processes. These disorders, which are influenced by hereditary and environmental factors, impair personal, social, intellectual, or occupational functioning. Typically emerging early in life, NDDs include conditions such as attention deficit hyperactivity disorder (ADHD), intellectual disability, autism spectrum disorders (ASDs), vision and hearing impairments, motor disorders, and specific learning disabilities. Children from impoverished and low-income neighborhoods are particularly vulnerable. The lack of comprehensive health data and public awareness about these conditions results in limited information regarding the prevalence of neurological illnesses in developing countries. India, with its large and ethnically diverse population, exemplifies this gap. Methods It is a prospective study to detect the prevalence and risk factors of neurodevelopmental disorders in children aged six months to nine years at a tertiary care center. Patient details, clinical findings, and relevant history were recorded on a pre-designed pro forma and analyzed statistically. Results Among the 1000 children in the study, 91 (9.1%) tested positive for NDDs. Among the 91 children who tested positive for NDD, the highest frequency is in the three to four years age group (17.6%), males were found to be in a higher ratio with 75.82%, with the male: female ratio being 3:1. Among the 91 children with NDD, intellectual disability was the most common disorder (20.9%), followed by ADHD (17.6%) and vision impairment (14.3%). Autism spectrum disorders, including autism and Asperger syndrome, and communication disorders, including stuttering and speech disorders, accounted for 13.2% each. Hearing loss was seen in 9.9% of children and multiple disorders were seen in 8.8% of the children from among 91 children. Conclusion Neurodevelopmental disorders are common and often coexist with other conditions. Children from low-income backgrounds are more affected. This study provides valuable insights into the prevalence and characteristics of NDDs in a specific population.
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Affiliation(s)
- Mridu Bahal
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Vineeta Pande
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Shradha Salunkhe
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Jasleen Dua
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Shailaja Mane
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Aryan Gupta
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Gaurav Kumar
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Shivani Kale
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Srinija Garlapati
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
| | - Ruhi Shaligram
- Pediatrics, Dr. D.Y. Patil Medical College, Hospital and Research Center, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pune, IND
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Jameel T, Baig M, Murad MA, Gazzaz ZJ, Mal Y, Alyoubi WE, Alyoubi GH, Alaslani ST, Alshuaibi HA, Nawaz A, Alkaabi T. Consanguineous marriages, premarital screening, and genetic testing: a survey among Saudi university students. Front Public Health 2024; 12:1328300. [PMID: 38577288 PMCID: PMC10993994 DOI: 10.3389/fpubh.2024.1328300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 03/04/2024] [Indexed: 04/06/2024] Open
Abstract
Background Marriage among cousins or close relatives, i.e., consanguinity, is prevalent in many parts of the world, especially the Muslim world. Across civilizations, cultural norms, religious beliefs, and economic factors affect consanguineous marriages (CMs); however, such marriages have social, genetic, and health repercussions. The present study investigated the university students' attitudes regarding CMs and factors influencing their attitudes at King Abdulaziz University (KAU), Jeddah, Kingdom of Saudi Arabia (KSA). Methods This cross-sectional prospective study was conducted at KAU Jeddah in 2023. The questionnaire was distributed via electronic media (Emails, Facebook Messenger & WhatsApp). The convenience sampling technique was used to select participants, and descriptive and inferential statistics were used to analyze the data on SPSS-26. Results A total of 1707 university students were part of the study (females, 1,198, 70.2%; males, 509, 29.8%). Almost half of the participants, 819 (48.0%), had parents with CMs. Most of the participants, 1,391 (81.5%), had CMs in the family. Half of the participants disagreed that parents consider marriage stable due to high compatibility and the same social relationship before and after marriage. About one-third of respondents said parents believe family marriage transmits cultural values and continuity and keeps wealth in the family. More than three-fourths of the participants stated that if marriage is arranged with first cousins, they will opt for genetic analysis (82.5%) and premarital counseling (85.2%). The personal attitudes of females (p < 0.001), undergraduate (p = 0.02), and health sciences students (p = 0.02) were more positive than their counterparts. Males (OR = 0.41; p < 0.001) and non-health sciences students (OR = 0.68; p = 0.01) were less likely to have significant positive attitudes than their counterparts. Among participants who had CM parents, males (OR = 0.397; p < 0.001) and non-health sciences students (OR = 0.60; p = 0.01) and urban residents (OR = 0.59; p = 0.01) had significantly lower odds of having a positive attitude than their counterparts. Conclusion The practice of CMs is still prevalent in Saudi culture, with almost half of the participants having CM parents and the majority reporting these marriages in their families. Personal attitudes toward CMs were extremely positive. Most students prefer genetic testing and premarital counseling if marrying first cousins. Gender, faculty, parental income, and educational background influenced participants' attitudes.
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Affiliation(s)
- Tahir Jameel
- Department of Internal Medicine, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mukhtiar Baig
- Department of Clinical Biochemistry, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Manal Abdulaziz Murad
- Department of Family and Community Medicine, Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Zohair Jamil Gazzaz
- Department of Internal Medicine, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Youssof Mal
- Department of Clinical Biochemistry, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Wedyan Eid Alyoubi
- Medical Students, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ghadi Hamed Alyoubi
- Medical Students, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Shoug Tawfiq Alaslani
- Medical Students, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Ayesha Nawaz
- SHO, Gold Coast University Hospital, Southport, QLD, Australia
| | - Turki Alkaabi
- Medical Students, Faculty of Medicine Rabigh, King Abdulaziz University, Jeddah, Saudi Arabia
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Bai JS, Gowda P R P, Naik SM, Somashekhar A. Hearing Screening in High-Risk Neonates Using Distortion Product Oto-Acoustic Emission. Indian J Otolaryngol Head Neck Surg 2024; 76:620-625. [PMID: 38440481 PMCID: PMC10908932 DOI: 10.1007/s12070-023-04227-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 09/07/2023] [Indexed: 03/06/2024] Open
Abstract
The prevalence of hearing loss is 0.09-2.3% in low risk neonates, and 0.3-14.1% in the high-risk population. The treatment requires early identification by neonatal hearing screening and early rehabilitation. OAE (oto-acoustic emission) and ABR (Auditory Brain Response) are the two objective tests used to evaluate hearing loss in neonates. OAE tests the biological response of the cochlea to auditory stimuli. ABR tests the auditory pathway. The aim is to estimate hearing loss in high-risk neonates using the Distortion Product Oto- acoustic emission (DP OAE) and to correlate the associated high-risk factors. This was a cross-sectional study conducted between March 2021 to September 2022. Newborns satisfying the inclusion criteria were included in the study. DP- OAE is performed to screen for hearing loss within 48 h of birth. Infants failing the first screening test are then examined for treatable causes and then repeated at 2 weeks. Newborns who fail the second DP-OAE are subjected to ABR for confirmation of hearing loss. A total of 100 high risk neonates underwent hearing screen using DP-OAE. Most common risk factors seen in our study are prematurity (22%), Low birth weight (< 2.5 kg) (20%), Neonatal Hyperbilirubinemia (17%), Maternal risk factors (GDM) (14%). Most neonates with prematurity failed the hearing test with significant p-value of 0.05. DP- OAE test can be successfully implemented as newborn hearing screening method, for early detection of hearing impairment to achieve the high quality standard of screening programs.
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Affiliation(s)
- J Sarah Bai
- Department of Otorhinolaryngology, The Oxford Medical College & Research Centre, Bangalore, Karnataka India
| | - Prajwal Gowda P R
- Department of Otorhinolaryngology, The Oxford Medical College & Research Centre, Bangalore, Karnataka India
| | - Sudhir M Naik
- Department of Otorhinolaryngology, The Oxford Medical College & Research Centre, Bangalore, Karnataka India
| | - Abhilasha Somashekhar
- Department of Otorhinolaryngology, The Oxford Medical College & Research Centre, Bangalore, Karnataka India
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Al Sudani ZM, Khosravi T, Oladnabi M. Hearing Loss Among Families with 2 and More Affected Members in Golestan Province, Iran: A Cross-Sectional Study of 320 Families. J Int Adv Otol 2024; 20:44-49. [PMID: 38454288 PMCID: PMC10895870 DOI: 10.5152/iao.2024.231214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/20/2023] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND Our study centers on various aspects of families who have 2 or more members with hearing loss (HL) and are living in Golestan province in Iran. We aimed to identify those families with the highest probability of hereditary HL and also to examine the impact of consanguinity among them. METHODS The families included in the study underwent a comprehensive screening process that involved their prenatal and postnatal histories as well as family medical histories. Additionally, each patient received a thorough clinical ear examination. The evaluation also took into account factors such as patterns of inheritance, consanguinity, a 3-generation pedigree, and physical examination. Following this initial assessment, patients were referred for a complete hearing evaluation, which included pure-tone audiometry, speech recognition threshold, otoacoustic emission, and auditory brainstem response tests. RESULTS We identified a total of 8553 individuals living in Golestan province who are hearing impaired. Among those, our records indicate that 320 families had at least 2 affected members. The rate of consanguinity marriage in non-syndromic families was 64.43%. Also, a significant number (88.12%, or n=282) of the families exhibited hereditary HL, among which a substantial proportion (89.72%, or n=253) presented with nonsyndromic forms of HL. Furthermore, bilateral, stable, and prelingual HL were the most frequently observed types, and a majority of the patients were diagnosed with sensorineural and profound HL. CONCLUSION This study revealed a correlation between consanguinity and the incidence of familial HL, with more probability of bilateral, prelingual, sensorineural, and profound forms.
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Affiliation(s)
- Zainab M. Al Sudani
- Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran
| | - Teymoor Khosravi
- Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran
| | - Morteza Oladnabi
- Gorgan Congenital Malformations Research Center, Golestan University of Medical Sciences, Gorgan, Iran
- Ischemic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
- Department of Medical Genetics, Golestan University of Medical Sciences, School of Advanced Technologies in Medicine, Gorgan, Iran
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Aldè M, Cantarella G, Zanetti D, Pignataro L, La Mantia I, Maiolino L, Ferlito S, Di Mauro P, Cocuzza S, Lechien JR, Iannella G, Simon F, Maniaci A. Autosomal Dominant Non-Syndromic Hearing Loss (DFNA): A Comprehensive Narrative Review. Biomedicines 2023; 11:1616. [PMID: 37371710 DOI: 10.3390/biomedicines11061616] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
Autosomal dominant non-syndromic hearing loss (HL) typically occurs when only one dominant allele within the disease gene is sufficient to express the phenotype. Therefore, most patients diagnosed with autosomal dominant non-syndromic HL have a hearing-impaired parent, although de novo mutations should be considered in all cases of negative family history. To date, more than 50 genes and 80 loci have been identified for autosomal dominant non-syndromic HL. DFNA22 (MYO6 gene), DFNA8/12 (TECTA gene), DFNA20/26 (ACTG1 gene), DFNA6/14/38 (WFS1 gene), DFNA15 (POU4F3 gene), DFNA2A (KCNQ4 gene), and DFNA10 (EYA4 gene) are some of the most common forms of autosomal dominant non-syndromic HL. The characteristics of autosomal dominant non-syndromic HL are heterogenous. However, in most cases, HL tends to be bilateral, post-lingual in onset (childhood to early adulthood), high-frequency (sloping audiometric configuration), progressive, and variable in severity (mild to profound degree). DFNA1 (DIAPH1 gene) and DFNA6/14/38 (WFS1 gene) are the most common forms of autosomal dominant non-syndromic HL affecting low frequencies, while DFNA16 (unknown gene) is characterized by fluctuating HL. A long audiological follow-up is of paramount importance to identify hearing threshold deteriorations early and ensure prompt treatment with hearing aids or cochlear implants.
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Affiliation(s)
- Mirko Aldè
- Department of Clinical Sciences and Community Health, University of Milan, 20090 Milan, Italy
- Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20090 Milan, Italy
- Otology Study Group of the Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS), 75000 Paris, France
| | - Giovanna Cantarella
- Department of Clinical Sciences and Community Health, University of Milan, 20090 Milan, Italy
- Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20090 Milan, Italy
| | - Diego Zanetti
- Department of Clinical Sciences and Community Health, University of Milan, 20090 Milan, Italy
- Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20090 Milan, Italy
| | - Lorenzo Pignataro
- Department of Clinical Sciences and Community Health, University of Milan, 20090 Milan, Italy
- Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20090 Milan, Italy
| | - Ignazio La Mantia
- Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia, University of Catania, 95123 Catania, Italy
| | - Luigi Maiolino
- Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia, University of Catania, 95123 Catania, Italy
| | - Salvatore Ferlito
- Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia, University of Catania, 95123 Catania, Italy
| | - Paola Di Mauro
- Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia, University of Catania, 95123 Catania, Italy
| | - Salvatore Cocuzza
- Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia, University of Catania, 95123 Catania, Italy
| | - Jérôme René Lechien
- Otology Study Group of the Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS), 75000 Paris, France
| | - Giannicola Iannella
- Otology Study Group of the Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS), 75000 Paris, France
| | - Francois Simon
- Otology Study Group of the Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS), 75000 Paris, France
| | - Antonino Maniaci
- Otology Study Group of the Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS), 75000 Paris, France
- Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia, University of Catania, 95123 Catania, Italy
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Albanghali MA. Prevalence of Consanguineous Marriage among Saudi Citizens of Albaha, a Cross-Sectional Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3767. [PMID: 36834460 PMCID: PMC9966201 DOI: 10.3390/ijerph20043767] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Consanguineous marriage (CM) is a prevalent kind of relationship in Muslim and Arab countries, and this type of relationship is linked to several health risks. This study was conducted to determine the prevalence of (CM), its associated hereditary diseases, and health-related issues among Saudi citizens in Albaha. This cross-sectional study was conducted between March 2021 to April 2021. Saudi citizens in Albaha who were aged ≥ 18 years and willing to participate were eligible for the study. A total of 1010 participants were included in this study. In total, 757 participants were married, widowed, or divorced. CM partnerships comprised 40% (N = 302) of the marriages among participants, of which first- and second-cousin marriages comprised 72% and 28%, respectively. The prevalence of CM among the participants' parents was lower than that among the participants (31% versus 40%, respectively). Children of participants in a CM were more likely to have cardiovascular diseases (p < 0.001), blood diseases (anaemia, thalassemia) (p < 0.001), cancer (p = 0.046), hearing loss and speech disorder (p = 0.003), and ophthalmic diseases (p = 0.037). Albaha showed a high percentage of consanguinity. An educational program must be established to enhance the population's knowledge of the consequences of CM. The current national premarital screening program should be extended to involve more screening tests for common hereditary diseases that result from CM.
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Affiliation(s)
- Mohammad A Albanghali
- Department of Public Health, Faculty of Applied Medical Sciences, Albaha University, Albaha 65779, Saudi Arabia
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Leal B, Lopes AC, Peixoto D, Correia L, Almiro MM, Vilar J, Azevedo ML, Bicho MA. Parental Consanguinity and Risk for Childhood Hearing Loss: A Retrospective Cohort Study. ACTA MEDICA PORT 2023; 36:336-342. [PMID: 36799720 DOI: 10.20344/amp.18607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 10/19/2022] [Indexed: 02/18/2023]
Abstract
INTRODUCTION Genetic causes are responsible for half of the cases of hearing loss, most of them being the result of non-syndromic genetic changes resulting from autosomal recessive inheritance. Parental consanguinity might be an indicator to consider in the diagnosis of these cases. The aim of this study was to assess its importance as a risk factor for childhood hearing loss. MATERIAL AND METHODS A retrospective cohort study conducted in a district hospital, between 2014 and 2018. We included all live births born during this period and excluded those with risk factors for childhood hearing loss other than parental consanguinity and those without hearing screening. We formed two study groups: newborns with parental consanguinity and newborns without risk factors. All the participants underwent hearing screening with the primary outcome of this study being the result of the screening. Those with a not normal result or with parental consanguinity also underwent diagnostic audiological evaluation. RESULTS Among 8513 live births, we studied 96 newborns with first-degree parental consanguinity and 96 newborns without risk factors. We found a statistically significant difference (p = 0.007) between the groups, with a 'refer' screening result rate of 24% in the group with parental consanguinity and 9.4% in the group without risk factors. We diagnosed one case of sensorineural hearing loss and another of mixed hearing loss in the first group and none of these cases in the second. CONCLUSION Parental consanguinity was associated with a higher risk of a refer screening result in newborns, which suggests the need to consider this as a risk factor for childhood hearing loss.
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Affiliation(s)
- Bárbara Leal
- Serviço de Pediatria. Hospital Infante D. Pedro. Centro Hospitalar do Baixo Vouga. Aveiro. Portugal
| | - Ana Cristina Lopes
- Serviço de Otorrinolaringologia. Hospital Infante D. Pedro. Centro Hospitalar do Baixo Vouga. Aveiro. Portugal
| | - Daniela Peixoto
- Serviço de Pediatria. Hospital Infante D. Pedro. Centro Hospitalar do Baixo Vouga. Aveiro. Portugal
| | - Laura Correia
- Serviço de Pediatria. Hospital Infante D. Pedro. Centro Hospitalar do Baixo Vouga. Aveiro. Portugal
| | - Maria Miguel Almiro
- Serviço de Pediatria. Hospital Infante D. Pedro. Centro Hospitalar do Baixo Vouga. Aveiro. Portugal
| | - João Vilar
- Serviço de Informática. Hospital Infante D. Pedro. Centro Hospitalar do Baixo Vouga. Aveiro. Portugal
| | - Maria Luísa Azevedo
- Serviço de Otorrinolaringologia. Hospital Infante D. Pedro. Centro Hospitalar do Baixo Vouga. Aveiro. Portugal
| | - Maria Adelaide Bicho
- Serviço de Pediatria. Hospital Infante D. Pedro. Centro Hospitalar do Baixo Vouga. Aveiro. Portugal
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Ferreira JC, Alshamali F, Pereira L, Fernandes V. Characterization of Arabian Peninsula whole exomes: Contributing to the catalogue of human diversity. iScience 2022; 25:105336. [DOI: 10.1016/j.isci.2022.105336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/01/2022] [Accepted: 10/10/2022] [Indexed: 11/24/2022] Open
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Almishaal AA, Saleh S, Alferaih H, Alhelo O. Prevalence, risk factors, and audiological characteristics of auditory neuropathy. Int J Audiol 2021; 61:1018-1026. [PMID: 34928752 DOI: 10.1080/14992027.2021.2014074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE The objective of this study was to determine the prevalence, risk factors, and audiological characteristics of auditory neuropathy spectrum disorder (ANSD) in the pediatric population. DESIGN A retrospective review of medical charts was conducted for children visiting two hospitals in Saudi Arabia. STUDY SAMPLE Medical records of 1025 patients with sensorineural hearing loss (SNHL) were reviewed. We analyzed the databases for results of audiological examinations, risk factors, and outcomes of intervention including hearing aid (HA) and cochlear implantation (CI). RESULTS Out of 1025 children with SNHL, 101 patients (9.85%) were identified to have ANSD. Audiological characteristics of the ANSD group revealed a severe-to-profound degree of hearing loss, all showed type A tympanogram and absent reflexes, absent auditory brainstem response (ABR) findings with present cochlear microphonic while otoacoustic emissions were absent in 54.5% of patients. The most prevalent risk factors for ANSD in this group were family history of hearing loss, consanguinity, hyperbilirubinemia, and low birth weight. Pure tone and speech detection thresholds improved significantly with CI compared to HA use in this sample of patients with ANSD. CONCLUSION This study shows that ANSD is not extremely rare among Saudi children with severe to profound hearing loss, with a prevalence of 9.85%.
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Affiliation(s)
- Ali A Almishaal
- College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Shaza Saleh
- King Abdullah Ear Specialist Center, King Saud University Medical City, Riyadh, Saudi Arabia
| | - Hala Alferaih
- Ear, Nose, and Throat Department, Audiology Clinic, King Fahad General Hospital, Jeddah, Saudi Arabia
| | - Osamah Alhelo
- College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
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