The Treatment of Acne V ulgaris using a Novel, Synchronous Intense Pulsed Blue Light and RadioFrequency Energy system Lisa M. Kellett, M.D. and R. Stephen Mulholland, M.D. Toronto, Ontario, Canada ABSTRACT
form of cleansers, creams, gels, lotions and
masks. These consist of salicylic acid, vitamin
improvements in lasers that have enabled their
A/tretinoin, benzoyl peroxide and antibiotic
use in the treatment of skin diseases. For the
formulations. In addition, oral antibiotics and
most part these have concentrated on non-
oral Isotretinoin (Accutane) are also used in the
treatment of moderate acne. On average, the
rhytides, pigmented lesions, vascular lesions
effectiveness of topical or oral medications is
technology have resulted in the development
of multiple lasers and light sources that are
associated with traditional therapies including
skin irritation, erythema, chelitis, dry eyes,
diseases including Acne Vulgaris (acne). We
describe the introduction of a novel dual
impressive results in preliminary studies to
abnormalities, hypersensitivity reactions, fetal
affect the natural course of acne. The evidence
to substantiate this is not only a resolution in
photosensitivity, irreversible night blindness,
the number of papules that were present at the
start of treatment, but also a decrease in the
formation of new papules. In addition, this
technology is fast, has minimal adverse effects
acne now go beyond traditional topical and
and is associated with zero recovery time.
oral therapies into the realm of lasers, lightsources and radiofrequency. Some of these new
INTRODUCTION
light based therapies are 410-415 nm passive
Acne has been estimated to affect over 90% of
the human population at some point in their
porphyrins associated with P.acnes. The result
is a destruction of P.acnes. These lasers claim to
multifactorial: a disorder of keratinization of
have an 80% response rate with a 60% decrease
in development of papules at 4 weeks and a
o v e rg rowth of Propionibacterium acnes
70% decrease at 6 weeks. The long wavelength
laser systems in the long pulsed YAG spectrum
overproduction of oil. Multiple treatments are
act directly upon the pilosebaceous glands.
available including topical treatments in the
hand piece consists of an Aurora head withcontact cooling and containing an Intense PulsedOptical crystal of short, blue light wavelength,between two bipolar, conducted radiofrequencyelectrodes. It is important during treatment thatoptimal contact is made with the skin to deliverthe RF energy and, to deliver the availablefluences of the optical energy safely. The contactcooling handpiece reduces the risk of thermalinjuries to the skin with the short wavelength oflight emitted. Similarly, “arcing” is possible with
Figure1.
the radio frequency current, which can also
Close-up view of the pulsed blue light optical guide(440-600nm) and bi-polar RF electrodes. Treatment
treatment protocol targets sub clinical sebaceous
glands with high bacterial loads and results insebaceous gland atrophy. Inflammatory papules
Pulsed Optical Energy (POE)
and pustules are treated with a second or thirdpulse, in a non-stacked fashion. The pulsed
and Radio Frequency
nature of the device allows a greater depth of
penetration than passive “blue light” systems,
consists of a combination of Pulsed Optical
thus delivering the blue light to greater depths
E n e rgy (POE), short wavelength blue light
systems, similar to IPL™ (intense pulsed light)
Each pulse emits a train of 10, 10ms pulses of
and Radio Frequency (RF). The treatments were
pulsed light with wavelengths between 440nm
performed using the Aurora™ (Syneron Inc.),
to 600nm. The inter-pulse delay between each of
which has an intense pulsed blue light optical
these pulses is 10ms. The RF pulse is a constant
head and RF treatment head (Fig. 1). This dual
200 ms pulse duration. The fluences from the
system acts on porphyrins through the short
short wavelength pulsed light head range from
2-10 J/cm2 and the RF up to 20 J/cm3. The
600nm), while the RF is theorized to cause
protocol calls for two treatments/week over 6
sebaceous gland atrophy. This synergistic optical
weeks for a total of 12 treatments. Treatment is
energy profile and radio frequency is effective in
initiated at low POE and RF, then increased
t reating two key factors involved in the
based upon skin type and response, weekly.
pathophysiology of acne vulgaris; P.acnes andoil/sebum production. The short wavelength,
Indications and Contraindications
blue pulsed light flash lamp targets porphyrins
therapy include acne vulgaris grades 1-4 (i.e.
pilosebaceous unit. The P.O.E. stimulates the
Clearlight™ or other acne programs, skin types
1-6, and patients in whom systemic antibiotics or
unstable. The result is destruction of P.Acnes in
Accutane are contraindicated. Contraindications
the pilosebaceous unit. The RF energy causes
include unrealistic expectations, Accutane use
within 3 months of treatment, photosensitization
sebaceous gland and a subsequent decrease in
disorders, collagen vascular diseases (such as
As a result of targeting both P. Acnes and the
Dermatomyositis, Rheumatoid Arthritis and
efficacious acne therapy than a passive, non-
pulsed blue light source i.e. the Clearlight™ or a
Similar to the FotoFacial RF™, the entire
long pulsed YAG system targeting only the
face is treated using the Fotofacial overlap
technique. A test spot is done in front of each earto ensure a good endpoint and should
Treatment Protocol
demonstrate slight erythema. The tre a t m e n t
The treatment protocol is to treat the entire
may result in minimal to moderate discomfort.
face, not just active papules or pustules. The
This can be eliminated with the use of a topical
anesthetic cream applied 30 minutes prior to
Adverse Effects
t reatment. The duration of treatment is 30
With the exception of transient erythema, no
minutes and can be delegated to a laser nurse.
adverse effects were noted. Patients were able to
Active papules and pustules are treated with a
return to normal activities immediately with no
t reatment, there should be very mild,generalized erythema. In regions of the skin that
Conclusions
are more pigmented or over active papules and
On the basis of our initial series of acne
pustules, more erythema might be pre s e n t .
patients treated with synchronous pulsed optical
Erythema usually lasts 30-90 minutes however,
blue light and radiofrequency energy, we have
1. A series of synchronous, Intense Pulse Optical
Maintenance treatment
appears to provide significant reduction in
responsive to a number of factors including
active acneiform papules and pustules.
hormones, stress and the environment. Becauseof this, unlike other skin lesions, which are
2. The intense pulsed optical, direct contact and
t reated with lasers and resolve, acne is not
RF energy synergy appears to be effective on
curable but can be controlled. Part of this control
in our study was to develop a maintenance
more advanced nodular cystic acne vulgaris
treatment program, which prolongs the benefits
of the original treatment course. This program
3. Long term acne flares appear diminished in a
Preliminary Study and Results
4. The treatments are very well tolerated and
An initial study using a split face comparison
have very acceptable, negligible side effect
resulted in a 100% response rate. A reduction of
new papules of 70-80% was seen after 6 weeks and maintenance treatment was found to decrease the frequency and severity of outbreaks by 50% (Fig. 2) Figure 2 Before treatment After 12 treatments, showing approximately 70% clearance of P. Acne.
ARTYKU£Y I ROZPRAWY Prawo prywatnemiêdzynarodowe. Zasady wyboruprawa w³aœciwego dla du¿ychryzyk ubezpieczeniowych. Zagadnienia praktyczne 1. Wprowadzenie W dniu 16 maja 2011 r. wesz³a w ¿ycie ustawa z dnia 4 lutego 2011 r. – Pra- wo prywatne miêdzynarodowe 1 (dalej: Ustawa). Ustawa wprowadza zna- cz¹ce regulacje tak¿e dla obrotu ubezpieczeniowego, chocia¿ prima facie mog³
Name ____________________________________ 3.2 Notes and Exercises Exponential Decay Model y = I*(1 − r)t I = the Initial Amount r = the rate of return (%) and t = is a unit of time Most major cities population is declining. Detroit is a good example of this. Detroit is declining at an average rate of 1.53% per year. If Detroit hit its peak population in 1950 of aroun