- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT03208777
Telomeric Abnormalities in Colorectal Diseases by Fluorescent in Situ Hybridization Technique
Telomeric Abnormalities in Benign and Malignant Colorectal Diseases by Fluorescent in Situ Hybridization Technique
Colorectal carcinoma is a heterogeneous disease that is caused by the interaction of genetic and environmental factors. colorectal carcinoma encompasses a complex disease with different molecular pathways and biological characteristics arising from a multi-step process that implicates several genetic and epigenetic events . The multi-step genetic model involves the loss of function of tumor suppressor genes, such as adenomatous polyposis coli (APC), Telomeres could be a promising marker due to the fact that their lengths change in the colorectal polyp-carcinoma sequence . Moreover, telomere length (TL) is altered in blood cells in patients with colorectal carcinoma
- These findings could suggest that changes in TL may take place before the development of the tumor .
The two main forms of inflammatory bowel disease (IBD), ulcerative colitis (UC) and Crohn's disease (CD) are characterized by chronic intestinal inflammation and risk of progression to colon cancer. One proposed cause of the latter characteristic is chromosome instability, since the rearrangement of genetic material can lead to activation of oncogenes, loss of tumor suppressor genes and other changes that lead to uncontrolled cell growth. Chromosome instability is particularly associated with UC and has been observed in colon epithelial cells and peripheral blood mononuclear cell. Since genomic instability in peripheral blood mononuclear cells (PBMCs) has been used as a biomarker for global cancer risk in a number of diseases, the latter observation suggests the possibility of a chromosome instability syndrome in UC that could affect all tissues. One possible cause of chromosome instability is telomere dysfunction .
Studieoversikt
Detaljert beskrivelse
Human chromosomes are capped and stabilized by telomeres, which not only protect them from damage but also have a role in regulating cellular senescence. After reaching a critical length, telomeres experience a double DNA change and cells will eventually enter senescence (replication) or cell death . Telomere length and telomere shortening have been long hypothesized to be a biological marker of aging at the cellular level and a potential mechanism of carcinogenesis. Genomic instability is a critical factor in the initiation and progression of human cancers. One mechanism that underlies genomic instability is loss of telomere function .
fluorescent in situ hybridization is a molecular diagnostic technique that utilizes labeled DNA probes to detect or confirm gene or chromosome abnormalities. fluorescent in situ hybridization is often utilized for both research and diagnosis of hematological malignancies and solid tumors. Conceptually, fluorescent in situ hybridization is a very straightforward technique whereby a DNA probe is hybridized to its complementary sequence on chromosomal preparations previously fixed on microscope slides . fluorescent in situ hybridization is able to detect cells that have chromosomal abnormalities consistent with neoplasia .
There has been a surge of published studies which assessed the association between telomere length and development of colorectal carcinoma. Thus, a meta-analysis addressing colorectal carcinoma and telomere length would be a useful addition to the current information in this area.
Studietype
Registrering (Forventet)
Kontakter og plasseringer
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Prøvetakingsmetode
Studiepopulasjon
Beskrivelse
Inclusion Criteria:
- Adult age group ˃ 18 years.
- Newly diagnosed cases (no previous treatment).
- No treatment was taken for HCV infection.
Exclusion Criteria:
- age group < 18 years.
- Patients with malignancy of other type.
- Patients not diagnosed by endoscopy or biopsy (not surely diagnosed).
Studieplan
Hvordan er studiet utformet?
Designdetaljer
Kohorter og intervensjoner
Gruppe / Kohort |
Intervensjon / Behandling |
|---|---|
|
control group
taking blood samples from apparently healthy people
|
taking blood samples and measure telomeric abnormalities
|
|
benign colorectal
taking blood samples from patients
|
taking blood samples and measure telomeric abnormalities
|
|
malignant colorectal
taking blood samples from patients
|
taking blood samples and measure telomeric abnormalities
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
presence of telomeric abnormalities
Tidsramme: one year
|
measure percentage of telomeric abnormalities in benign and malignant colorectal diseases
|
one year
|
Samarbeidspartnere og etterforskere
Sponsor
Etterforskere
- Hovedetterforsker: fatma magdy zidan, residant, South Egypt Cancer Institute
Publikasjoner og nyttige lenker
Studierekorddatoer
Studer hoveddatoer
Studiestart (Forventet)
Primær fullføring (Forventet)
Studiet fullført (Forventet)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- FISH
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Studerer et amerikansk FDA-regulert enhetsprodukt
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .
Kliniske studier på Tumor Gastrisk
-
Washington University School of MedicineNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)FullførtRoux-en-Y Gastric Bypass | Bariatrisk kirurgi | Vertical Sleeve Gastrectomy | Magebånd | Bypass, GastricForente stater
-
Medtronic - MITGFullført
-
North Dakota State UniversityNational Institutes of Health (NIH)FullførtRoux en Y Gastric Bypass kirurgiForente stater
-
Jessa HospitalHar ikke rekruttert ennå
-
Wageningen UniversityRijnstate HospitalUkjentRoux-en-Y Gastric BypassNederland
-
North Dakota State UniversityNeuropsychiatric Research Institute, Fargo, North DakotaFullførtRoux en Y Gastric BypassForente stater
-
DuomedAktiv, ikke rekrutterendeOvervekt | Gastrectomi | Roux-en-Y Gastric Bypass | Mini Gastric BypassBelgia
-
Olympus Corporation of the AmericasUnity Health TorontoFullført
-
GCS Ramsay Santé pour l'Enseignement et la RechercheEuraxi PharmaRekrutteringBypass, GastricFrankrike
-
North Dakota State UniversityNeuropsychiatric Research Institute, Fargo, North DakotaFullførtSleeve Gastrectomy | Roux en Y Gastric BypassForente stater
Kliniske studier på taking blood samples
-
Hillel Yaffe Medical CenterUkjent
-
University Hospital, BrestFullførtUndersøk humant papillomavirus (HPV) ved vaginale auto-taking (APV) og urinprøveFrankrike
-
Tarsus UniversityFullført
-
London North West Healthcare NHS TrustUkjentPilonidal sykdom | Pilonidal abscess | Pilonidal sinus med abscess | Pilonidal sinus infisert
-
Eastern Mediterranean UniversityFullførtMuskelstyrke | Muskelhypertrofi | SportsytelseKypros
-
ExThera Medical Europe BVExThera Medical Corporation; Vivantes Clinic NeuköllnRekrutteringBlodstrømsinfeksjonFrankrike, Tyskland, Nederland, Østerrike, Belgia, Italia, Polen, Spania, Storbritannia
-
Ascensia Diabetes CareFullført
-
InSightecFocused Ultrasound FoundationFullført
-
Stanford UniversityRekrutteringVaskulære sykdommer | Slag | Hypertensjon | TIAForente stater