Laryngeal and Esophageal EGF-r Expression in Patients With Reflux Laryngitis (EGFR)
18 mars 2015 uppdaterad av: CLAUDIA ALESSANDRA ECKLEY, Faculdade de Ciências Médicas da Santa Casa de São Paulo
- Saliva plays an important role in the homeostasis of the digestive tract mucosa.
- Salivary organic components, such as the Epidermal Growth Factor(EGF) have been found in defficient concentrations in patients with gastroesophageal reflux disease (GERD) and reflux related laryngitis (LPR).
- The epidermal growth factor receptor (EGFR) signaling pathway is one of the most important pathways that regulate growth, survival, proliferation, and differentiation in mammalian cells
- Eperdermal growth factor receptor (EGFR) overexpression has been linked to hyperproliferative diseases.
- It is unknown if the inflammatory process in GERD is realated to difficiencies in EGFR expression.
- The objective of the current study was to try to establish a correlation between the expression of EGFR in the laryngeal and esophageal mucosa and the severity of laryngitis in adults with GERD and LPR
Studieöversikt
Status
Avslutad
Betingelser
Intervention / Behandling
Detaljerad beskrivning
Objectives: The expression of the Epidermal Growth Factor receptor (EGFR) has been studied in a number of neoplastic and chronic diseases, but there are no reports in literature regarding its expression in chronic laryngitis associated to Gastroesophageal Reflux isease (GERD), also known as Laryngopharyngeal Reflux (LPR).
The current study compared the expression of EGFR in the esophageal and laryngeal mucosa of adults with GERD and LPR.
Study Design: Prospective based on imunohistochemical analysis of parafine embedded biopsy specimens and clinical data.
Methods: From August, 2004 to February 2007 a total of 24 adults with confirmed diagnosis of LPR and no other clinical conditions or habits known to cause chronic laryngitis were studied at a University Hospital.
Biopsies of the distal esophagus and the retrocrycoid laryngeal mucosa were obtained during upper digestive endoscopy.
Data were analyzed statistically comparing samples in each individual and between individuals using the severity of histological signs of inflammation on hematoxacillin and eosinophillin (HE) stains to immunohistochemical analysis of the expression of EGFR.
Other independent variables were severity of symptoms and signs, gender and age.
Fishers´s exact test and multivariance ANOVA tests were used with significance level established at 95%.
Studietyp
Interventionell
Inskrivning (Faktisk)
24
Fas
- Inte tillämpbar
Kontakter och platser
Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.
Studieorter
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São Paulo, Brasilien, 01222-010
- Santa Casa School of Medicine and Hospitals of São Paulo Brazil
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Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
20 år till 80 år (Vuxen, Äldre vuxen)
Tar emot friska volontärer
Nej
Kön som är behöriga för studier
Allt
Beskrivning
Inclusion Criteria:
- Adults with reflux laryngitis diagnosed by clinical symptoms (Reflux Symptom -Index >13) and videolaryngoscopic signs (Reflux Finding Score >7)
- A positive 24-hour doube probe esophageal ph monitoring test
Exclusion Criteria:
- Other known causes of chronic laryngitis or inflammatory conditions of the pharynx, larynx and upper digestive tract.
- Current or past history of Head and Neck or digestive tract tumors.
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Diagnostisk
- Tilldelning: Icke-randomiserad
- Interventionsmodell: Enskild gruppuppgift
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
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Aktiv komparator: biopsy of retrocrycoid laryngeal mucosa
During upper digestive endoscopy a biopsy specimen of the retrocrycoid laryngeal mucosa was obtained with a forceps introduced by the working channel of the scope. Intervention: biopsy of retrocrycoid laryngeal mucosa |
Biopsies of the retrocrycoid laryngeal mucosa were performeed under sedation using a forceps introduced by the working channel of the endoscope
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Aktiv komparator: biopsy of distal esophagus mucosa
during upper digestive endoscopy a biopsy specimen of the distal esophageal mucosa was obtained Intervention:biopsy of distal esophagus mucosa |
Biopsies were performeed under sedation using a forceps introduced by the working channel of the endoscope during upper digestive endoscopy
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Epidermal Growth Factor Receptor (EGFR) expression in laryngeal and esophageal mucosa of patients with chronic reflux laryngitis
Tidsram: prospective study that enrolled every adult patient with reflux laryngitis and no other causes of chronic laryngeal and pharyngeal inflammation during a 36 month period
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Patients with reflux laryngitis diagnosed by suggestive symptoms (Reflux Symptom Index>13) and videolaryngoscopic signs (Reflux Finding Score>7) and confirmed by a 24-hour double probe esophageal ph monitoring test were consecutively enrolled properly informed and consented.
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prospective study that enrolled every adult patient with reflux laryngitis and no other causes of chronic laryngeal and pharyngeal inflammation during a 36 month period
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Compare Epidermal Growth Factor Receptor expression in different severities of inflammatory responses.
Tidsram: EGFR expression of the esophageal and laryngeal mucosas was compared to clinical, videolaryngoscopic and microscopic inflammatory signs. (up to 36 months)
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Mucosal biopsy specimens obtained during routine upper digestive tract endocopic examination under sedation were obtained.
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EGFR expression of the esophageal and laryngeal mucosas was compared to clinical, videolaryngoscopic and microscopic inflammatory signs. (up to 36 months)
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Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Utredare
- Huvudutredare: CLAUDIA A ECKLEY, MD, Santa Casa School of Medicine and Hospitals of São Paulo Brazil
Publikationer och användbara länkar
Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.
Allmänna publikationer
- Eckley CA, Michelsohn N, Rizzo LV, Tadokoro CE, Costa HO. Salivary epidermal growth factor concentration in adults with reflux laryngitis. Otolaryngol Head Neck Surg. 2004 Oct;131(4):401-6. doi: 10.1016/j.otohns.2004.01.020. Erratum In: Otolaryngol Head Neck Surg. 2005 Feb;132(2):344. Tadakoro, Carlos Eduardo [corrected to Tadokoro, Carlos Eduardo].
- Eckley CA, Rios Lda S, Rizzo LV. Salivary egf concentration in adults with reflux chronic laryngitis before and after treatment: preliminary results. Braz J Otorhinolaryngol. 2007 Mar-Apr;73(2):156-60. doi: 10.1016/s1808-8694(15)31060-0.
- Sarosiek J, McCallum RW. Do salivary organic components play a protective role in health and disease of the esophageal mucosa? Digestion. 1995;56 Suppl 1:32-7. doi: 10.1159/000201299.
- Rourk RM, Namiot Z, Edmunds MC, Sarosiek J, Yu Z, McCallum RW. Diminished luminal release of esophageal epidermal growth factor in patients with reflux esophagitis. Am J Gastroenterol. 1994 Aug;89(8):1177-84.
Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart
1 januari 2004
Primärt slutförande (Faktisk)
1 december 2007
Avslutad studie (Faktisk)
1 december 2007
Studieregistreringsdatum
Först inskickad
29 augusti 2012
Först inskickad som uppfyllde QC-kriterierna
6 mars 2013
Första postat (Uppskatta)
7 mars 2013
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
20 mars 2015
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
18 mars 2015
Senast verifierad
1 mars 2015
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- fcmscsp180/06
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