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Mnif-Feki M, Safi W, Bougacha-Elleuch N, Abid G, Moalla M, Elleuch M, Ben Salah DH, Rekik N, Belguith N, Abdelhedi F, Kammoun T, Hachicha M, Charfi N, Mnif F, Kammoun H, Hadj Kacem H, Hadj-Kacem F, Abid M. Occurrence of Hypopituitarism in Tunisian Turner Syndrome patients: familial versus sporadic cases. Gynecol Endocrinol 2021; 37:848-852. [PMID: 34124982 DOI: 10.1080/09513590.2021.1939298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVE To explore unusual association between Turner Syndrome (TS) and Hypopituitarism in a Tunisian cohort. METHODS We reported 6 patients with TS associated to Hypopituitarism, including three familial cases except the fourth sister who showed only a TS phenotype. Biochemical analysis, resonance magnetic imaging and cytogenetic analyses were performed. RESULTS The average age of our patients was 17.2 years (11-31 years). They were all referred for short stature and pubertal delay, except for the fourth sister who presented spontaneous puberty with the integrity of the pituitary axis and the presence of an X ring chromosome. Karyotype analysis showed monosomy in 3 cases and a mosaic TS in the 3 remaining cases, including one patient with abnormal X chromosome structure. Somatotropic and corticotropic deficiencies were confirmed in 2 sporadic cases while the gonadotropic and thyrotropic axes were spared. In contrast; familial cases were consistently affected by the integrity of the corticotropic axis. MRI showed pituitary hypoplasia in all familial cases and pituitary stalk interruption syndrome in only one sporadic case. No correlation was found between the chromosome formula and the anterior pituitary involvement. CONCLUSION Co-segregation of congenital Hypopituitarism with pituitary hypoplasia and X chromosome aberrations could imply a molecular anomaly of transcription factors responsible for the differentiation and development of pituitary cells such as PROP1, POUF1, Hesx1, Lhx3, Lhx4. The etiopathogenic link between X chromosome abnormalities and the occurrence of Hypopituitarism remains unclear; however, the progress of molecular biology may clarify the interrelation between transcription factors and sex chromosome segregation abnormalities.
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Affiliation(s)
- M Mnif-Feki
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
| | - W Safi
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
| | - N Bougacha-Elleuch
- Laboratory of Molecular and Functional Genetics, Faculty of Sciences of Sfax, Sfax University, TUNISIA
| | - G Abid
- Department of Medical Imaging, Auxerre Hospital Center, Auxerre, France
| | - M Moalla
- Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, Sfax, Tunisia
| | - M Elleuch
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
| | - D H Ben Salah
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
| | - N Rekik
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
| | - N Belguith
- Genetic Department, Medicine CHU Hédi Chaker, Sfax, Tunisia
| | - F Abdelhedi
- Genetic Department, Medicine CHU Hédi Chaker, Sfax, Tunisia
| | - T Kammoun
- Pediatric Department, CHU Hédi Chaker, Sfax, Tunisia
| | - M Hachicha
- Pediatric Department, CHU Hédi Chaker, Sfax, Tunisia
| | - N Charfi
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
| | - F Mnif
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
| | - H Kammoun
- Genetic Department, Medicine CHU Hédi Chaker, Sfax, Tunisia
| | - H Hadj Kacem
- Department of Applied Biology, College of Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - F Hadj-Kacem
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
| | - M Abid
- Endocrinology-Diabetology Department, CHU Hédi Chaker, Sfax, Tunisia
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Bougacha-Elleuch N, Elleuch M, Charfi N, Mnif F, Belghith N, Abdelhedi F, Kammoun H, Hachicha M, Mnif M, Abid M. Unusual association of turner syndrome and hypopituitarism in a Tunisian family. Curr Res Transl Med 2016; 64:9-13. [DOI: 10.1016/j.retram.2016.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Accepted: 01/08/2016] [Indexed: 11/30/2022]
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Abstract
Graves' disease (GD) is an organ-specific autoimmune disorder of multifactorial etiology with a polygenic mode of inheritance. A recent report has demonstrated that there is a linkage and an association between the genetic markers of the CTLA-4 gene on chromosome 2q33 and GD. In order to confirm this association in a Tunisian population, three polymorphisms of the CTLA-4 gene were analyzed: the first is at the -318 position from the ATG start codon consisting of a C/T change; the second is in position 49 of exon 1, which lies in the A/G transition; and the third is in the 3' untranslated region with variant lengths of the dinucleotide (AT)n repeat. The genomic DNA from 144 patients with GD and 205 healthy individuals was genotyped after specific polymerase chain reaction amplification. Comparative analysis using a chi(2) test showed a weak yet significant difference in allele frequencies of the A/G dimorphic marker between patients and controls (P < 0.05), and a significant increase of A/A homozygous individuals among patients (21.53 vs 12.7%, P = 0.02, odds ratio (OR) = 1.89) was found. Analyses of CTLA-4 A/G polymorphism with respect to sex showed a significant difference in A/A genotypes between female patients and controls (OR = 2.14; 95%, 1.13 < OR < 4.04, P < 0.05). The distribution of CTLA-4 (AT)n allele frequencies differed between patients and controls (chi(2) = 38.18, 20 degrees of freedom, P = 0.0084) and the highest OR was found with the CTLA-4 (AT)-224-bp allele (OR = 6.43, 1.7 < OR < 28.64; P = 0.001). In conclusion, these results show that the CTLA-4 gene, or one closely associated with it, confers susceptibility to GD in a Tunisian population.
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Affiliation(s)
- H Hadj Kacem
- Faculté de Médecine, Laboratoire de Génétique Moléculaire Humaine, Sfax, Tunisia
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Bougacha-Elleuch N, Tamouza R, Bellassouad M, Jouida J, Abid M, Maalej A, Makni H, Ayadi H. Analysis of heat shock protein polymorphisms in a large family with autoimmune thyroid diseases. Arch Inst Pasteur Tunis 2000; 77:23-4. [PMID: 14658224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
Graves disease and Hashimoto's thyroiditis are autoimmune thyroid diseases (AITD) in which the genetic contribution is complex. The purpose of this work was to analyze the influence of hsp70 gene polymorphisms on the susceptibility to AITD. The hsp 70-2 and hsp 70-hom polymorphism was analyzed, by PCR-RFLP using PstI and NcoI enzymes, respectively, in 40 patients affected with AITD and 38 related healthy individuals belonging to a large consanguineous family named Akr. The transmission disequilibrium test (TDT) was applied on nuclear families, deduced from the Akr pedigree, with at least one heterozygous parent for each studied polymorphism. The corresponding x2 values for hsp 70-2 and hsp 70-hom were, respectively, of 0.52, p > 0.05 and 2.77, p > 0.05. Our data indicated lack of association between these hsp polymorphisms and AITD in this large family.
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Affiliation(s)
- N Bougacha-Elleuch
- Laboratoire de Génétique Moléculaire Humaine, Faculté de Médecine 3029 Sfax, Tunisie
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