AB0905 THE PREVALENCE AND RISK FACTORS OF OSTEOPOROSIS IN PATIENTS WITH INFLAMMATORY BOWEL DISEASES: A TUNISIAN STUDY

Background:

Osteoporosis is as known a chronic complication of inflammatory bowel diseases (IBD). Its etiopathogenesis is often multifactorial.

Objectives:

The aim of our study was to describe the prevalence of reduced bone mineral density and to identify risk factors of osteoporosis in patients with inflammatory bowel diseases.

Methods:

This is a retrospective study over three years, collecting patients suffering from IBD and having benefited from a bone densitometry. We have specified for each patient the clinical data and the IBD characteristics. Bone mineral density (BMD, g/ cm) was assessed by dual X-ray absorptiometry. Osteoporosis was diagnosed when BMD was 2.5 standard deviations below the mean peak value in young adults (T score,22.5 SD). Patients with other pathology that may change the bone metabolism were excluded.

Results:

sixty-one patients were included with an average age of 38 ± 13 years [16-73]. The sex ratio M / F was 1.25. 69% of patients had ulcerative colitis. The bone density profile was normal in 49.2% of the cases. Osteoporosis and osteopenia were noted in 13.1% and 37.7% of patients, respectively. Osteoporosis was associated with advanced age (50.5 ± 16.5 years vs 36.26 ± 12.93 years; p = 0.007) and longer course disease (6.75 ± 7, 4 years vs 2.5 ± 4 years; p = 0.015). The cumulative dose of prednisone equivalent used in patients with osteoporosis was significantly higher than the other patients (2775 ± 3338 mg vs 706 ± 1449 mg; p = 0.003). Osteopenia was more frequently associated with crohn’s disease (58% vs 28.6% p = 0.0029). There was no significant difference between the group with osteoporosis or osteopenia and the group with normal bone densitometry for sex and body mass index.

Conclusion:

Osteoporosis during IBD is associated with advanced age, longer duration of illness and administration of high doses of corticosteroids. The high proportion of osteoporosis and osteopenia in our study underlines the importance of systematic BMD measurement in all IBD patients as a base for initiating the appropriate treatment.

References:

[1]The prevalence and risk factors for osteoporosis in patients with inflammatory bowel disease. Miznerova E et al. Bratisl Lek Listy. 2013;114(8):439-45.

[2]Osteoporosis and inflammatory bowel disease: prevalence and risk factors in Tunisian patients. Boubaker J et al. Gastroenterol Clin Biol. 2003 Oct;27(10):901-7.

Disclosure of Interests:

None declared

FRI0476 RHEUMATIC MANIFESTATIONS DURING INFLAMMATORY BOWEL DISEASE

Background:

Rheumatologic manifestations are frequent extraintestinal manifestations (MEI) of chronic inflammatory bowel disease (IBD). Some of these manifestations develop in parallel with the underlying disease, others evolve on their own account. They sometimes lead to reconsider the initial therapy for intestinal purposes.

Objectives:

The aim of our study is to specify the epidemioclinical characteristics of osteoarticular manifestations of chronic inflammatory bowel disease and their possible impact on intestinal disease

Methods:

This is a retrospective study conducted between January 2000 and December 2015 including patients hospitalized in our department for chronic inflammatory bowel disease (IBD).

Results:

During the study period, 206 patients with IBD were hospitalized in our department, 78 of whom had rheumatic MEI (frequency equal to 37.8%). These 78 patients were divided into 48 men and 30 women with a sex ratio of 1.6 and an average age of 40.7 ± 13.6 years (18–79). They had Crohn’s disease in 60% of the cases. The average length of service for IBDs was 83 ± 73 months (4–360). Osteoarticular MEIs were peripheral in 56.4% of cases, axial in 29.5% of cases, mixed in 6.41% of cases with the presence of osteopenia in 6.41% of cases and osteoporosis in 1 28%. The activity of IBD associated with these MEI was moderate with an average number of outbreaks / year of 1.6 ± 0.8. These patients were treated with salicylates in 30.7% of the cases using corticosteroid therapy at least once in 23% of the cases. Maintenance treatment based on immunosuppressants was found in 38.46% of cases and anti-TNF alfa in 10.25% of cases. During follow-up, 3 patients died (3.84%). There was no significant difference between patients with IBD with rheumatic MEI and without rheumatic MEI regarding epidemiological data and disease activity.

Conclusion:

Rheumatic MEIs are found in almost 40% of IBDs. They affect men more frequently than women and Crohn’s disease than UC. They are rather peripheral and do not associate with a more important activity of the disease.

References:

[1]Journal of the Canadian Association of Gastroenterology, 2019, 2(S1), S73–S80 doi: 10.1093/jcag/gwy053 Supplement Article

Disclosure of Interests:

None declared

Iatrogenic colorectal Kaposi's sarcoma complicating a refractory ulcerative colitis in a human immunodeficiency negative-virus patient

Kaposi sarcoma is an unusual tumor associated to a human herpes virus-8 infection involving the skin or internal organs. Iatrogenic Kaposi's sarcoma often occurs in patients receiving immunosuppressive therapy. So far, a few Kaposi's sarcoma cases have been reported in the literature associated with inflammatory bowel diseases. We report a 53-year-old male diagnosed with a severe refractory ulcerative colitis who was treated with corticosteroids and azathioprine. The patient underwent a colectomy after the failure of medical treatment. Histological examination of the colon showed findings suggestive of Kaposi's sarcoma. Immunohistochemistry for human herpes virus-8 was positive in the colonic lesions. Correspondence.

Leukemia in Patients with Klinefelter Syndrome: A Report of Two Cases

Klinefelter syndrome (KS) is a chromosome abnormality characterized by a 47, XXY karyotype associated with hypogonadism and infertility. We present two cases of leukemia in patients with KS. The first patient presented with acute promyelocytic leukemia. He relapsed after the end of treatment. The second patient was diagnosed with chronic myeloid leukemia. Treatment with imatinib failed and the patient presented with myeloid blast crisis.

Hyper-Raman and Raman scattering from the polar modes of PbMg1/3Nb2/3O3

Microhyper-Raman spectroscopy of PbMg(1/3)Nb(2/3)O(3) (PMN) single crystal is performed at room temperature. The use of an optical microscope working in backscattering geometry significantly reduces the LO signal, highlighting thereby the weak contributions underneath. We clearly identify the highest frequency transverse optic mode (TO3) in addition to the previously observed soft TO-doublet at low frequency and TO2 at intermediate frequency. TO3 exhibits strong inhomogeneous broadening but perfectly fulfils the hyper-Raman cubic selection rules. The analysis shows that hyper-Raman spectroscopy is sensitive to all the vibrations of the average cubic Pm3¯m symmetry group of PMN, the three polar F1u- and the silent F2u-symmetry modes. All these vibrations can be identified in the Raman spectra alongside other vibrational bands likely arising from symmetry breaking in polar nanoregions.

[Tunisian version validation of quality life's questionnaire for chronic inflammatory disease of intestine]

BACKGROUND

The systematic evaluation of the quality of life is essential in the management of patients with chronic bowel disease ( IBD) inflammatory diseases.

AIM

Translate in Tunisian Arabic dialect the English version of «inflammatory bowel disease questionnaire» (UK- IBDQ ) and validated by studying its psychometric validity, discriminative ability, reliability and sensitivity to change.

METHODS

80 Tunisian patients with IBD completed the Tunisian version of the IBDQ (T- IBDQ ) , a visual analog scale , the SF- 36, the Harvey- Bradshaw index for Crohn's disease , and the index Simple clinical colitis activity for ulcerative colitis.

RESULTS

The T- IBDQ included in the final version 5 fields. The internal validity of the items was satisfactory for all patients. TIBDQ was correlated with scores of SF- 36, visual analog scale scores and indices of activity of IBD. T- IBDQ distinguish between active disease and inactive disease . He was also sensitive to changes in disease activity .

CONCLUSION

We validated in this work a Tunisian dialect Arabic version of the IBDQ : T- IBDQ . Its validity, discriminative ability , reliability and sensitivity to change were demonstrated.

The experience of a Tunisian referral centre in prenatal diagnosis of Xeroderma pigmentosum

AIMS

Xeroderma pigmentosum (XP, OMIM 278700-278780) is one of the most severe genodermatoses and is relatively frequent in Tunisia. In the absence of any therapy and to better manage the disease, we aimed to develop a molecular tool for DNA-based prenatal diagnosis.

METHODS

Six consanguineous Tunisian XP families (4 XP-A and 2 XP-C) have benefited from a prenatal diagnosis. Screening for mutations was performed by direct sequencing, while maternal-foetal contamination was checked by genotyping.

RESULTS

Among the 7 prenatal diagnoses, 4 foetuses were heterozygous for the screened mutation. Exclusion of contamination by maternal cells was checked. Mutations were detected at a homozygous state in the remaining cases, and the parents decided to terminate pregnancy.

CONCLUSION

Our study illustrates the implementation of prenatal diagnosis for better health support of XP in Tunisia.

[Trisomy 21 and cancers]

Patients with trisomy 21, still called Down's syndrome (DS), present a particular tumoral profile compared to the general population with an increased incidence of leukaemia in the childhood and a low risk of solid cancer in the adulthood. DS children indeed present a 50-fold risk of developing a leukaemia compared to age-matched non-trisomic children and most of them develop a specific myelodysplasic disorder called transient myelodysplasic disorder. In spite of the low incidence of solid tumors, some are very rare as breast cancer, nephroblastoma, neuroblastoma and medulloblastoma, whereas the others remain more frequent as retinoblastoma, lymphoma and gonadal and extragonadal germ cell tumours. In this review, we present possible mechanisms which can favour, or on the contrary repress the formation and progression of tumours in DS patients, which are related to gene effect dosage of oncogenes or tumour repressors on chromosome 21, tumour angiogenesis, apoptosis and epithelial cell-stroma interactions.