Ignite Creation Date:
2024-05-06 @ 3:47 PM
Last Modification Date:
2024-10-26 @ 1:56 PM
Study NCT ID:
NCT04750161
Status:
UNKNOWN
Last Update Posted:
2021-03-05
First Post:
2021-02-06
Brief Title:
The Role Of Neutrophil Proteases As Global Regulators Of Il-1 Family Cytokine Activity In Skin Disorders
Sponsor:
St Jamess Hospital Ireland
Organization:
St Jamess Hospital Ireland
Study Overview
Official Title:
The Role Of Neutrophil Proteases As Global Regulators Of Il-1 Family Cytokine Activity In Skin Disorders
Status:
UNKNOWN
Status Verified Date:
2021-03
Last Known Status:
RECRUITING
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
NEUTROPRO
Brief Summary:
Pro-inflammatory cytokines are critically important drivers of inflammatory and autoimmune diseases and cytokine-targeted biologics have been transformative in the treatment of several inflammatory and autoimmune diseases As the diversity of approved cytokine-targeted biologic therapies grows it will become increasingly important to stratify patients on the basis of specific genetic or disease biomarker phenotypes to ensure that patients receive the appropriate cytokine-targeted biologic at the appropriate dose and at the appropriate time This project aims to explore patterns of pro-inflammatory cytokinechemokine expression within normal versus i psoriatic ii eczematic iii ichthyotic human skin as well as in human and mouse models of skin inflammation with the objective of identifying cytokine response profiles cytokine fingerprints that will provide a molecular basis for a the stratification of patients into disease subtypes that b enable cytokine-directed biologics to be targeted towards patients that are most likely to benefit from them The investigators anticipate that cytokine fingerprinting will aid in the selection of the most appropriate biologics in patients that are most likely to benefit from such therapies
Detailed Description:
Neutrophils the first responder cells of the immune system are recruited rapidly to sites of infection or inflammation Neutrophil granule proteases cathepsin G elastase and proteinase-3 are thought to function as anti-microbial effectors cooperatively working to kill microorganisms during infection However evidence also suggests that these enzymes play an important role in the coordination and escalation of inflammatory reactions but how this is achieved has remained obscure IL-1 family cytokines are important initiators of inflammation but require processing by enzymes for activation The IL-1 cytokine family is made up of 11 members but this study will focus on the processing and activation of 7 of these pro-inflammatory cytokines IL-1a IL-1b IL-18 IL-33 IL-36a IL-36b and IL-36g Members of the extended IL-1 family are found at high levels in barrier surfaces such as the skin and thought to play a role in conditions such as psoriasis atopic dermatitiseczema and ichthyosis Psoriasis particularly is associated with massive neutrophil influx This study aims to investigate the physiological relevance of neutrophil proteases in the activation of IL-1 family cytokines in skin disorders
The investigators plan to study the contribution of neutrophil proteases to inflammation in normal skin versus lesions from areas of skin affected by the conditions described above The investigators are interested in measuring the levels of active neutrophil proteases in normal healthy skin versus skin lesions from affected sites compared to non-lesional unaffected skin The investigators also are interested to see if levels of neutrophil proteases found in lesions from affected skin sites are able to process and activate IL-1 family cytokines and contribute to inflammation in this way
The investigators plan to include up to 80 participants 20 healthy volunteers 20 participants who will have a diagnosis of psoriasis 20 participants who have a diagnosis of atopic dermatitis and 20 patients who have a diagnosis of ichthyosis with active lesions on their arms Skin samples from normal versus lesional and non-lesional unaffected skin will be taken by tape stripping method
The investigators plan to study the contribution of neutrophil proteases to inflammation in normal skin versus lesions from areas of skin affected by the conditions described above The investigators are interested in measuring the levels of active neutrophil proteases in normal healthy skin versus skin lesions from affected sites compared to non-lesional unaffected skin The investigators also are interested to see if levels of neutrophil proteases found in lesions from affected skin sites are able to process and activate IL-1 family cytokines and contribute to inflammation in this way
The investigators plan to include up to 80 participants 20 healthy volunteers 20 participants who will have a diagnosis of psoriasis 20 participants who have a diagnosis of atopic dermatitis and 20 patients who have a diagnosis of ichthyosis with active lesions on their arms Skin samples from normal versus lesional and non-lesional unaffected skin will be taken by tape stripping method
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None