Acne VulgarisNCT03186222
Polymorphism of Extrapituitary Promoter of PRL Gene and Relationships With Serum Prolactin Levels in Acne Vulgaris.
An observational study of Acne Vulgaris, run by Assiut University.
Trial summary
Acne vulgaris is one of the most common skin diseases. It is a disease of the pilosebaceous units, clinically characterized by seborrhea, comedones, papules, pustules, nodules and, in some cases, scarring. Read more about this study
- Who is it for?
- Ages 12 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Acne Vulgaris
- What is being tested?
- blood sample
- How many people
- 200 participants
- Where
- No sites listed yet
- Study dates
- Jan 2018to Jun 2019
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 12 to 40 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Study population: A group of 100 patients with acne vulgaris and another control group of 100 age and sex matched healthy volunteers
Who may be able to join
None listed.
Who cannot join
- patients below 12 years of age
- patients recieving disorders and drug that could alter levels of prolactin such as thyroid disorders, renal and/or hepatic failure and drug use.
Trial locations and contacts
No sites are listed yet.
About this study
Acne vulgaris is one of the most common skin diseases. It is a disease of the pilosebaceous units, clinically characterized by seborrhea, comedones, papules, pustules, nodules and, in some cases, scarring.
Read the detailed description
The pathogenesis of acne has been attributed to multiple factors such as increased sebum production, alteration of the quality of sebum lipids, regulation of cutaneous steroidogenesis, androgen activity, interaction with neuropeptides, exhibition of pro- and anti- inflammatory properties, follicular hyperkeratinization and the action of Propionibacterium acnes (P. acnes) within the follicle .
Central or peripheral stress may induce the development of clinical inflammation in the pilosebaceous unit, leading to the development of acne lesions or to exacerbation of pre-existing acne . Prolactin is one of the major hormonal signals that are immediately upregulated on psychoemotional and physical stress .
The discovery of locally produced extrapituitary prolactin and that human skin is both a source and target of prolactin production has increased interest in cutaneous prolactin research . Prolactin and prolactin receptors expression have now been demonstrated in several cutaneous cell populations, including keratinocytes, fibroblasts, sweat glands and sebaceous glands. Hence, prolactin is likely to be involved as a mediator in the ''brain-skin axis'' .
Given that the mammary gland is an epidermal derivative, it is not surprising that the pilosebaceous unit, another epidermal derivative, has also surfaced as a prominent, non-classical prolactin target organ expressing prolactin receptors .
In human skin, Prolactin and prolactin receptors are both expressed in the sebaceous gland , and prolactin stimulates sebum production . These effects are evident in women with hyperprolactinemia, who develop hirsutism and seborrhea, not uncommonly associated with female pattern balding . Patients treated with hyperprolactinemia-inducing neuroleptic agents also develop seborrhea . As sebocytes are prominent target cells of neuroendocrine signaling , prolactin might also contribute to the aggravating effect of psychoemotional stress on acne vulgaris. Besides the stimulation of sebocyte proliferation, which enhances holocrine secretion of this gland, this might also be related to effects on peripheral androgen metabolism .
The secretion of extrapituitary prolactin is regulated by the alternative promoter of prolactin gene , and the G/T polymorphism in position -1149 seems to be associated with level of prolactin expression .
In view of the recognized increase of human prolactin serum levels upon psychoemotional stress and the exacerbating effect of psychological stress on acne, together with a proposed role of prolactin in acne pathogenesis, it would be interesting to investigate the role of prolactin in acne vulgaris
- Conditions
- Acne Vulgaris
- Being tested
- blood sample
- Medical subject headings
- Acne Vulgaris
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
blood sampleDiagnostic test
Serum PRL levels are measured using ELISA assay kit in both groups and correlated with severity of acne in acne group.
The genomic DNA from peripheral leukocytes is extracted. Genotyping of 1149G/T single nucleotide polymorphism (SNP) PRL extrapituitary promoter is done in acne patients and healthy individuals (control group) using PCR-RFLP method.
| Study group | Role | What they receive |
|---|---|---|
| cases with acne vulgaris | A group of 100 patients with acne vulgaris. blood sample are taken in the morning hours, between 08:00 and 10:00 am. Receives: Diagnostic Test: blood sample | |
| control group | control group of 100 age and sex matched healthy volunteers. blood sample are taken in the morning hours, between 08:00 and 10:00 am. Receives: Diagnostic Test: blood sample |
What is being measured
The primary outcome is the main question the study is designed to answer.
polymorphism of extrapituitary promoter of PRL gene in acne cases and controls
The blood samples are taken in the morning hours, between 08:00 and 10:00 am The genomic DNA from peripheral leukocytes is extracted. Genotyping of 1149G/T single nucleotide polymorphism (SNP) PRL extrapituitary promoter is done in acne patients and healthy individuals (control group) using PCR-RFLP method.
The genomic DNA from peripheral leukocytes is extracted. Genotyping of 1149G/T single nucleotide polymorphism (SNP) PRL extrapituitary promoter is done in acne patients and healthy individuals (control group) using PCR-RFLP method.
Measured: 1 year
Secondary outcomes (1)
serum prolactin levels in acne patients and controls and among different acne severity grades
The blood samples are taken in the morning hours, between 08:00 and 10:00 am. Serum PRL levels are measured using ELISA assay kit in both groups and correlated with severity of acne in acne group.
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Jun 2017
- Study startJan 2018 (estimated)
- Primary completionJan 2019 (estimated)
- Study completionJun 2019 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for Acne VulgarisStudies of the same condition, open and under way.
- More trials run by Assiut UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 200 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Assiut University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Yasmin Mostafa Tawfik, Assiut University
- Investigators
- Sara Awad, MD, Principal investigator, Assiut University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03186222
- Sponsor's protocol ID
- POEPOPRGAGARWSPLIAV
- Status last verified
- Jun 2017
- First submitted
- 11 Jun 2017
- Last updated
- 14 Jun 2017
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Zouboulis CC, Eady A, Philpott M, Goldsmith LA, Orfanos C, Cunliffe WC, Rosenfield R. What is the pathogenesis of acne? Exp Dermatol. 2005 Feb;14(2):143-52. doi: 10.1111/j.0906-6705.2005.0285a.x.
PubMed 15679586Ganceviciene R, Graziene V, Bohm M, Zouboulis CC. Increased in situ expression of melanocortin-1 receptor in sebaceous glands of lesional skin of patients with acne vulgaris. Exp Dermatol. 2007 Jul;16(7):547-52. doi: 10.1111/j.1600-0625.2007.00565.x.
PubMed 17576233Arck PC, Slominski A, Theoharides TC, Peters EM, Paus R. Neuroimmunology of stress: skin takes center stage. J Invest Dermatol. 2006 Aug;126(8):1697-704. doi: 10.1038/sj.jid.5700104.
PubMed 16845409Oakes SR, Rogers RL, Naylor MJ, Ormandy CJ. Prolactin regulation of mammary gland development. J Mammary Gland Biol Neoplasia. 2008 Mar;13(1):13-28. doi: 10.1007/s10911-008-9069-5. Epub 2008 Jan 25.
PubMed 18219564Zouboulis CC, Schagen S, Alestas T. The sebocyte culture: a model to study the pathophysiology of the sebaceous gland in sebostasis, seborrhoea and acne. Arch Dermatol Res. 2008 Sep;300(8):397-413. doi: 10.1007/s00403-008-0879-5. Epub 2008 Aug 9.
PubMed 18690467Langan EA, Ramot Y, Goffin V, Griffiths CE, Foitzik K, Paus R. Mind the (gender) gap: does prolactin exert gender and/or site-specific effects on the human hair follicle? J Invest Dermatol. 2010 Mar;130(3):886-91. doi: 10.1038/jid.2009.340. Epub 2009 Nov 5. No abstract available.
PubMed 19890346Reem GH, Ray DW, Davis JR. The human prolactin gene upstream promoter is regulated in lymphoid cells by activators of T-cells and by cAMP. J Mol Endocrinol. 1999 Jun;22(3):285-92. doi: 10.1677/jme.0.0220285.
PubMed 10343287Paus R. Does prolactin play a role in skin biology and pathology? Med Hypotheses. 1991 Sep;36(1):33-42. doi: 10.1016/0306-9877(91)90161-q.
PubMed 1766412
Study at a glance
From the registry record, last updated by the sponsor on 14 Jun 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Polymorphism of Extrapituitary Promoter of PRL Gene and Relationships With Serum Prolactin Levels in Acne Vulgaris.
- ClinicalTrials.gov ID
- NCT03186222
- Acronym / sponsor ID
- POEPOPRGAGARWSPLIAV
- Conditions
- Acne Vulgaris
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 200 participants (estimated)
- Lead sponsor
- Assiut UniversityUniversity, hospital or other
- Study start
- Jan 2018 (estimated)
- Primary completion
- Jan 2019 (estimated)
- Study completion
- Jun 2019 (estimated)
- First posted
- 14 Jun 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Acne vulgaris is one of the most common skin diseases. It is a disease of the pilosebaceous units, clinically characterized by seborrhea, comedones, papules, pustules, nodules and, in some cases, scarring.
Detailed description
The pathogenesis of acne has been attributed to multiple factors such as increased sebum production, alteration of the quality of sebum lipids, regulation of cutaneous steroidogenesis, androgen activity, interaction with neuropeptides, exhibition of pro- and anti- inflammatory properties, follicular hyperkeratinization and the action of Propionibacterium acnes (P. acnes) within the follicle .
Central or peripheral stress may induce the development of clinical inflammation in the pilosebaceous unit, leading to the development of acne lesions or to exacerbation of pre-existing acne . Prolactin is one of the major hormonal signals that are immediately upregulated on psychoemotional and physical stress .
The discovery of locally produced extrapituitary prolactin and that human skin is both a source and target of prolactin production has increased interest in cutaneous prolactin research . Prolactin and prolactin receptors expression have now been demonstrated in several cutaneous cell populations, including keratinocytes, fibroblasts, sweat glands and sebaceous glands. Hence, prolactin is likely to be involved as a mediator in the ''brain-skin axis'' .
Given that the mammary gland is an epidermal derivative, it is not surprising that the pilosebaceous unit, another epidermal derivative, has also surfaced as a prominent, non-classical prolactin target organ expressing prolactin receptors .
In human skin, Prolactin and prolactin receptors are both expressed in the sebaceous gland , and prolactin stimulates sebum production . These effects are evident in women with hyperprolactinemia, who develop hirsutism and seborrhea, not uncommonly associated with female pattern balding . Patients treated with hyperprolactinemia-inducing neuroleptic agents also develop seborrhea . As sebocytes are prominent target cells of neuroendocrine signaling , prolactin might also contribute to the aggravating effect of psychoemotional stress on acne vulgaris. Besides the stimulation of sebocyte proliferation, which enhances holocrine secretion of this gland, this might also be related to effects on peripheral androgen metabolism .
The secretion of extrapituitary prolactin is regulated by the alternative promoter of prolactin gene , and the G/T polymorphism in position -1149 seems to be associated with level of prolactin expression .
In view of the recognized increase of human prolactin serum levels upon psychoemotional stress and the exacerbating effect of psychological stress on acne, together with a proposed role of prolactin in acne pathogenesis, it would be interesting to investigate the role of prolactin in acne vulgaris
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| cases with acne vulgaris | – | Diagnostic Test: blood sampleA group of 100 patients with acne vulgaris. blood sample are taken in the morning hours, between 08:00 and 10:00 am. |
| control group | – | Diagnostic Test: blood samplecontrol group of 100 age and sex matched healthy volunteers. blood sample are taken in the morning hours, between 08:00 and 10:00 am. |
Who may qualify
- Ages
- 12 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
- Study population
- A group of 100 patients with acne vulgaris and another control group of 100 age and sex matched healthy volunteers
Key inclusion criteria (0 listed)
Key exclusion criteria (2 listed)
- patients below 12 years of age
- patients recieving disorders and drug that could alter levels of prolactin such as thyroid disorders, renal and/or hepatic failure and drug use.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| blood sampleSerum PRL levels are measured using ELISA assay kit in both groups and correlated with severity of acne in acne group. The genomic DNA from peripheral leukocytes is extracted. Genotyping of 1149G/T single nucleotide polymorphism (SNP) PRL extrapituitary promoter is done in acne patients and healthy individuals (control group) using PCR-RFLP method. | Diagnostic test | cases with acne vulgaris, control group |
Primary outcome
polymorphism of extrapituitary promoter of PRL gene in acne cases and controls
Time frame: 1 year
The blood samples are taken in the morning hours, between 08:00 and 10:00 am The genomic DNA from peripheral leukocytes is extracted. Genotyping of 1149G/T single nucleotide polymorphism (SNP) PRL extrapituitary promoter is done in acne patients and healthy individuals (control group) using PCR-RFLP method. The genomic DNA from peripheral leukocytes is extracted. Genotyping of 1149G/T single nucleotide polymorphism (SNP) PRL extrapituitary promoter is done in acne patients and healthy individuals (control group) using PCR-RFLP method.
1 secondary outcome
serum prolactin levels in acne patients and controls and among different acne severity grades
Time frame: 1 year
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Jun 2017.
- Background: PubMed 15679586Zouboulis CC, Eady A, Philpott M, Goldsmith LA, Orfanos C, Cunliffe WC, Rosenfield R. What is the pathogenesis of acne? Exp Dermatol. 2005 Feb;14(2):143-52. doi: 10.1111/j.0906-6705.2005.0285a.x.
- Background: PubMed 17576233Ganceviciene R, Graziene V, Bohm M, Zouboulis CC. Increased in situ expression of melanocortin-1 receptor in sebaceous glands of lesional skin of patients with acne vulgaris. Exp Dermatol. 2007 Jul;16(7):547-52. doi: 10.1111/j.1600-0625.2007.00565.x.
- Background: PubMed 16845409Arck PC, Slominski A, Theoharides TC, Peters EM, Paus R. Neuroimmunology of stress: skin takes center stage. J Invest Dermatol. 2006 Aug;126(8):1697-704. doi: 10.1038/sj.jid.5700104.
- Background: PubMed 18219564Oakes SR, Rogers RL, Naylor MJ, Ormandy CJ. Prolactin regulation of mammary gland development. J Mammary Gland Biol Neoplasia. 2008 Mar;13(1):13-28. doi: 10.1007/s10911-008-9069-5. Epub 2008 Jan 25.
- Background: PubMed 18690467Zouboulis CC, Schagen S, Alestas T. The sebocyte culture: a model to study the pathophysiology of the sebaceous gland in sebostasis, seborrhoea and acne. Arch Dermatol Res. 2008 Sep;300(8):397-413. doi: 10.1007/s00403-008-0879-5. Epub 2008 Aug 9.
- Background: PubMed 19890346Langan EA, Ramot Y, Goffin V, Griffiths CE, Foitzik K, Paus R. Mind the (gender) gap: does prolactin exert gender and/or site-specific effects on the human hair follicle? J Invest Dermatol. 2010 Mar;130(3):886-91. doi: 10.1038/jid.2009.340. Epub 2009 Nov 5. No abstract available.
- Background: PubMed 10343287Reem GH, Ray DW, Davis JR. The human prolactin gene upstream promoter is regulated in lymphoid cells by activators of T-cells and by cAMP. J Mol Endocrinol. 1999 Jun;22(3):285-92. doi: 10.1677/jme.0.0220285.
- Background: PubMed 1766412Paus R. Does prolactin play a role in skin biology and pathology? Med Hypotheses. 1991 Sep;36(1):33-42. doi: 10.1016/0306-9877(91)90161-q.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Sara Awad, MD principal investigator
Assiut University
Questions about this trial
What is this clinical trial studying?
An observational study of Acne Vulgaris, run by Assiut University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 0 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 14 Jun 2017. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Sara Awad, MD (+201023102094, saramawad@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
polymorphism of extrapituitary promoter of PRL gene in acne cases and controls (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03186222, which also lists 8 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Jun 2017.