CClinicalTrials.gg
CompletedNCT04046783Updated Aug 26, 2019

Patch With Onion Extract and Allantoin for C-section Scar

An observational study in Cesarean Section; Dehiscence, Scar Keloid and Wound Heal, sponsored by University of Salerno. Completed at 1 site in Italy. Open to female participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-08-26.

Sponsored by University of Salerno · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
93
Ages
18 Years and older
Sex
Female
01

Study summary

The wound healing is a process occurring in response to dermal injury. The resulting scar may have various characteristics ranging from fine-line and asymptomatic to hypertrophic scars and keloids. Prevention or early treatment of pathological scars is the most appropriate approach. Among available remedies, gels and patches containing onion extract and allantoin have been demonstrated to be safe and effective in patients with scars of various origins and severity.

One of the most used natural products is a patch containing allium cepa and allantoin licensed for treatment of the scars including keloids. However, up to date, no controlled studies have evaluated the effects of such a device in women who have undergone Cesarean delivery. Therefore, the aim of this study was to investigate the effects of this patch on Cesarean section (C-section) scars.

Read the detailed description

This is an observational non-interventional study. Women who underwent C-section were consecutively recruited at University Hospital of Salerno. Taking into account the number of C-section the study population was divided into two groups: Group A included subjects without a prior history of C-section, group B subjects who had already undergone previous C-section. At baseline after stitches removal, scars assessment was made using digital photographs and the validate Patient and Observer Scar Assessment Scale (POSAS). After 4 weeks, during the outpatient visit, women from both group A and B were asked whether had applied some natural products on the scars or not. In this occasion, the C-section of the women who had applied a patch containing allium cepa and allantoin as well as those of women who had not used any products (who represented the control group) were re-evaluated as at baseline. The Observers were blinded. One of them performed the scars assessment at baseline, the other one after 4 weeks. During the outpatient visit an informed consent for participation was obtained by all the subjects costituing the study population. The participation to the study was voluntary

02

Conditions studied

  • Cesarean Section; Dehiscence
  • Scar Keloid
  • Wound Heal

Browse trials for

Keywords

  • Natural products
  • Wound healing
  • Cesarean delivery
03

In context

Keloid

123 studies on the registry are indexed under Keloid; 23 are open to participants now.

This study's enrollment of 93 is close to the median of 100 across 23 observational studies indexed under Keloid.

Browse Keloid studies →

Lead sponsor

University of Salerno is the lead sponsor of 20 studies on the registry; 7 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

The study population was represented by adult women, subdivided in two groups, A and B on the basis of the number of Cesearean delivery. Group A included subjects without a prior history of Cesarean delivery, Group B subjects who had already undergone previous Cesarean delivery. All the women were enrolled at University Hospital of Salerno, were >=18 years old without hypersensitivity to any constituent of the patch, who have not experienced pre-term birth, obesity, gestational diabetes, hypertension, infections, dermatologic diseases and use of both systemic and topic corticosteroids. All the partecipants were volunteers and released a written informed consent

Inclusion criteria

  • subjects undergone Cesarean delivery;
  • age >18;
  • voluntary participation to the study;
  • informed consent release.

Exclusion criteria

Exclusion Criteria:

  • age \<18
  • hypersensitivity to any constituent of the patch;
  • pre-term birth, obesity,
  • gestational diabetes,
  • hypertension,
  • infections,
  • dermatologic diseases
  • use of both systemic and topic corticosteroids;
  • no informed consent release.
05

Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
93 participants (actual)
Patient registry
No

Groups and cohorts

  • Group A included subjects without a history of C-section

    Group A consisted of 47 women without a prior a history of C-section: 24 controls and 23 subjects who used patch. These latest 23 subjects applied overnight a patch containing a standardized quantity of Allium Cepa extract and allantoin on C-section scars over 4 weeks

    Device: patch

  • group B subjects who had already undergone previous C-section

    Group B consisted of 46 women already undergone previous C-section: 22 controls and 24 subjects who used patch. These latest 24 subjects applied overnight a patch containing a standardized quantity of Allium Cepa extract and allantoin on C-section scars over 4 weeks

    Device: patch

Interventions

  • Devicepatch

    an overnight application of a patch containing a standardized quantity of Allium Cepa extract and allantoin on C-section scars over 4 weeks.

06

What researchers measure

Primary outcomes

  1. Effectiveness of an overnight 4-week Treatment with Patch containing Onion Extract and Allantoin for Cesarean Section Scars in women undergone to Cesarean section as assed by POSAS v.2.0.

    The primary outcome was represented by the number of women undergone a Cesarean section (C-section) that used for 4-week a patch containing Allium Cepa extract and allantoin in respect to controls. The Patient and Observer Scar Assessment Scale (POSAS) was used to compare the differences from baseline to 4-week treatment and between controls and subjects using the patch

    Time frame: Scars were evaluated at baseline and after 4 weeks by two observers and by the subjects.Scars assessment was made using digital photographs and the validate Patient and Observer Scar Assessment Scale (POSAS, version 2.0).

07

Study locations

1 site
  • University of Salerno, Dept. of Medicine
    Baronissi, Campania 84081, Italy
08

References and documents

Publications

  • Fearmonti RM, Bond JE, Erdmann D, Levin LS, Pizzo SV, Levinson H. The modified Patient and Observer Scar Assessment Scale: a novel approach to defining pathologic and nonpathologic scarring. Plast Reconstr Surg. 2011 Jan;127(1):242-247. doi: 10.1097/PRS.0b013e3181f959e8. PubMed 21200219 ↗
  • Gauglitz GG, Korting HC, Pavicic T, Ruzicka T, Jeschke MG. Hypertrophic scarring and keloids: pathomechanisms and current and emerging treatment strategies. Mol Med. 2011 Jan-Feb;17(1-2):113-25. doi: 10.2119/molmed.2009.00153. Epub 2010 Oct 5. PubMed 20927486 ↗
  • Prager W, Gauglitz GG. Effectiveness and Safety of an Overnight Patch Containing Allium cepa Extract and Allantoin for Post-Dermatologic Surgery Scars. Aesthetic Plast Surg. 2018 Aug;42(4):1144-1150. doi: 10.1007/s00266-018-1172-4. Epub 2018 Jun 14. PubMed 29948103 ↗
  • Willital GH, Heine H. Efficacy of Contractubex gel in the treatment of fresh scars after thoracic surgery in children and adolescents. Int J Clin Pharmacol Res. 1994;14(5-6):193-202. PubMed 7672876 ↗
  • Sidgwick GP, McGeorge D, Bayat A. A comprehensive evidence-based review on the role of topicals and dressings in the management of skin scarring. Arch Dermatol Res. 2015 Aug;307(6):461-77. doi: 10.1007/s00403-015-1572-0. Epub 2015 Jun 5. PubMed 26044054 ↗
  • Chuangsuwanich A, Jongjamfa K. The efficacy of combined herbal extracts gel preparation in the prevention of postsurgical hypertrophic scar formation. Dermatol Ther (Heidelb). 2014 Dec;4(2):187-95. doi: 10.1007/s13555-014-0055-0. Epub 2014 Jun 25. PubMed 24962057 ↗
  • Fang QQ, Chen CY, Zhang MX, Huang CL, Wang XW, Xu JH, Wu LH, Zhang LY, Tan WQ. The Effectiveness of Topical Anti-scarring Agents and a Novel Combined Process on Cutaneous Scar Management. Curr Pharm Des. 2017;23(15):2268-2275. doi: 10.2174/1381612822666161025144434. PubMed 27784253 ↗
  • Ho WS, Ying SY, Chan PC, Chan HH. Use of onion extract, heparin, allantoin gel in prevention of scarring in chinese patients having laser removal of tattoos: a prospective randomized controlled trial. Dermatol Surg. 2006 Jul;32(7):891-6. doi: 10.1111/j.1524-4725.2006.32192.x. PubMed 16875470 ↗
  • Rose P, Whiteman M, Moore PK, Zhu YZ. Bioactive S-alk(en)yl cysteine sulfoxide metabolites in the genus Allium: the chemistry of potential therapeutic agents. Nat Prod Rep. 2005 Jun;22(3):351-68. doi: 10.1039/b417639c. Epub 2005 May 10. PubMed 16010345 ↗
  • Pikula M, Zebrowska ME, Poblocka-Olech L, Krauze-Baranowska M, Sznitowska M, Trzonkowski P. Effect of enoxaparin and onion extract on human skin fibroblast cell line - therapeutic implications for the treatment of keloids. Pharm Biol. 2014 Feb;52(2):262-7. doi: 10.3109/13880209.2013.826246. Epub 2013 Sep 30. PubMed 24074438 ↗
  • Araujo LU, Grabe-Guimaraes A, Mosqueira VC, Carneiro CM, Silva-Barcellos NM. Profile of wound healing process induced by allantoin. Acta Cir Bras. 2010 Oct;25(5):460-6. doi: 10.1590/s0102-86502010000500014. PubMed 20877959 ↗
  • Conti V, Corbi G, Iannaccone T, Corrado B, Giugliano L, Lembo S, Filippelli A, Guida M. Effectiveness and Tolerability of a Patch Containing Onion Extract and Allantoin for Cesarean Section Scars. Front Pharmacol. 2020 Sep 25;11:569514. doi: 10.3389/fphar.2020.569514. eCollection 2020. PubMed 33101027 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 26, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04046783
Lead sponsor
University of Salerno
Responsible party
Prof Valeria Conti (Professor, University of Salerno) — Principal investigator
First posted
Aug 6, 2019
Start date
Mar 2, 2019
Primary completion
Jul 30, 2019
Completion
Jul 31, 2019
Last update
Aug 26, 2019

Study contacts

Valeria Conti, PhD
principal investigator · Department of Medicine,University of Salerno, Baronissi (SA), Italy

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2019. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion