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On-line version ISSN 1806-4841
An. Bras. Dermatol. vol.87 no.1 Rio de Janeiro Jan./Feb. 2012
Clinical, biometric and ultrasound assessment of the effects of daily use of a nutraceutical composed of lycopene, acerola extract, grape seed extract and Biomarine Complex in photoaged human skin *
Avaliações clínica, biométrica e ultrassonográfica dos efeitos do uso diário de um nutracêutico a base de licopeno, extrato de acerola, extrato de semente de uva e Complexo Biomarinho na pele fotoenvelhecida humana
Adilson CostaI; Lars LindmarkII; Lúcia Helena Fávaro ArrudaIII; Elvira Cancio AssumpçãoIV; Fernanda Sayuri OtaIV; Margareth de Oliveira PereiraIV; Stéphanie Selma Barros LangenIV
IMaster in Dermatology by the "Universidade Federal de São Paulo" (UNIFESP); PhD degree in course by the School of Medicine "Universidade de São Paulo" (FMUSP) - Coordinator of the Acne, Cosmetic Dermatology, Dermatology in Pregnancy and Clinical Trial Clinics at the "Pontifícia Universidade Católica de Campinas" (PUC-Campinas) - Campinas (SP), Brazil
IINutritionist, Ph.D. in Medicine by the Gothenburg University, Sweden; - President of Kasima Medical Development AB, Sweden; Chairman of Lipidco Institute of Nutrition and Health, Sweden
IIIMaster in Dermatology by the "Universidade Federal de São Paulo" (UNIFESP); PhD degree in course by the School of Medicine - Universidade de São Paulo (FMUSP) - Chief of the Service of Dermatology at the Pontifícia Universidade Católica de Campinas (PUC-Campinas) - Campinas (SP), Brazil
IVMedical doctor - student of the specialization course in Dermatology at the Pontifícia Universidade Católica de Campinas (PUC-Campinas) - Campinas (SP), Brazil
BACKGROUND: The use of nutraceuticals has become frequent in the cutaneous approach to photoaging.
OBJECTIVES: To assess the clinical efficacy of a nutraceutical product composed of lycopene, acerola extract, grape seed extract and Biomarine ComplexT in photoaged human skin.
METHODS: 50 women, from 35 to 60 years of age, phototypes I to III, were assessed. For 120 days, they associated the nutraceutical product with the use of a sunscreen FPS15. On days 0 (D0), 30 (D30), 60 (D60), 90 (D90) and 120 (D120) they were evaluated and underwent Medical Assessments and Self-Assessment and cutaneous biometric analyses (corneometry, sebumetry and pH-metry) in the skin of the left zygomatic region and the upper medial side region of the left arm; on days 0 (D0), 30 (D30) and 120 (D120) the skin of the same regions was analyzed by ultrasound. On days 0 (D0) and 120 (D120) skin biopsies were performed in the areas where instrumental evaluation was performed (to evaluate collagen and elastic fibers).
RESULTS: There was an improvement of the general status of the skin of all volunteers by the Medical and Volunteer Self- Assessments; increased parameters of cutaneous hydration, reduction of pH, increasing of ultrasound density and a histological increment of collagen and elastic fibers (both on the face and arm); there was a reduction of seborrhea (only on the face)
CONCLUSIONS: The daily use of a nutraceutical product containing lycopene, acerola extract, grape seed extract and Biomarine ComplexT showed an important adjuvant effect to counteract skin photoaging.
Keywords: Ascorbic acid; Dietary supplements; Skin aging
FUNDAMENTOS: O uso de nutracêuticos se tornou uma condição frequente na abordagem cutânea do fotoenvelhecimento.
OBJETIVOS: Avaliar a eficácia clínica do uso de um produto nutracêutico a base de licopeno, extrato de acerola, extrato de semente de uva e Complexo BiomarinhoT na pele fotoenvelhecida humana.
MÉTODOS: Foram avaliadas 50 mulheres, de 35 a 60 anos de idade, fototipo I a III. Por 120 dias, elas associaram ao uso de fotoprotetor FPS15 a tomada diária do produto nutracêutico em questão. Nos dias 0 (D0), 30 (D30), 60 (D60), 90 (D90) e 120 (D120) elas foram avaliadas, quando sofreram Avaliações Médica e Auto-Avaliação e análises biométricas cutâneas (corneometria, sebumetria e pHmetria) nas peles da região zigomática esquerda e face súpero-medial do braço esquerdos; nos dias 0 (D0), 30 (D30) e 120 (D120) a pele das mesmas regiões foram analisadas do ponto de vista ultrassonográfico. Nos dias 0 (D0) e 120 (D120) biópsias cutâneas foram realizadas nas respectivas áreas das análises instrumentais (para avaliar colágeno e das fibras elásticas).
RESULTADOS: Houve melhora do estado geral da pele de todas as voluntárias pelas Avaliações Médica e Voluntária; aumento alterações dos parâmetros cutâneos na hidratação, redução do pH cutâneo, aumento da densidade ultrassonográfica e aumento histológico na densidade colágena e elástica (tanto na face quanto no braço); redução da seborreia somente na face.
CONCLUSÕES: O uso diário de um produto nutracêutico a base de licopeno, extrato de acerola, extrato de semente de uva e Complexo BiomarinhoT mostra-se um adjuvante importante na abordagem do fotoenvelhecimento cutâneo.
Palavras-chave: Ácido ascórbico; Envelhecimento da pele; Suplementos dietéticos;
Skin aging is a process that involves genetic, environmental and hormonal mechanisms, resulting from intrinsic (chronological) and extrinsic (environmental) components occurring simultaneously.1 Free radicals play an essential role on these extrinsic and intrinsic components. They act directly on the growth factors and receptors of cytokines in the keratinocytes and dermal cells, leading to skin inflammation.2
In the chronological aging, free radicals are naturally formed in the human metabolism; however, in the extrinsic aging, they are produced by external factors, such as exposure to ultraviolet (UV) rays, smoking and alcohol consumption.2 UV rays are the most important factor in extrinsic aging and plays a fundamental role in the etiology of photoaging and skin cancer.1-3 At least 50% of skin damage induced by UV rays may be attributed to the formation of free radicals induced by these rays.2
The UV radiation penetrates into the skin and, depending on the wavelength, it interacts with different cells located on the different layers. The shortwave (UVB) radiation is primarily absorbed in the epidermis and predominantly affects the keratinocytes, while the longer waves (UVA) penetrate to a deeper level, affecting both the keratinocytes of the epidermis and the fibroblasts of the dermis.2 Each type of wave acts in a specific manner. Due to the generation of ROS, the UVA indirectly produces mutations in the mitochondrial DNA, important in the physiopathogenesis of the skin aging; the UVB radiation directly damages the DNA, being related to premalignant skin damage and skin cancer.1-4
In view of the present knowledge it can be assumed that photoaging is a cumulative process that depends on the degree of sun exposure and cutaneous pigmentation.1 Continuous and recurrent sun exposure causes permanent changes in the quantity and distribution of the melanin in the skin. The presence of amorphous material in the papillary dermis, instead of connective tissue, is considered a main element to distinguish chronological aging from photoaging.1-3
When the skin is chronically exposed to the sun, changes occur in the dermis and epidermis. In the latter the stratum corneum is thickened, the epidermis becomes acanthotic and dysplasia with cellular atypia and anaplasia occurs. The keratinocytes become irregular with the loss of polarity and the melanocytes are distributed in an irregular manner. There is also a decrease in the quantity of Langerhans cells, which explains the immunossupression.1,2
The histopathological dermal changes in the photoaging are represented by the decrease of collagen and its precursors, in addition to the degeneration of elastic fibers, which are replaced by an amorphous mass. The inflammatory process thus generated leads to an increase of mast cells, macrophages and lymphocytes. Moreover, blood vessels become more fragile and may easily break apart, resulting in purpuric lesions.1,2
Various antioxidants have been used for different types of diseases. Most of them have important biological properties, such as, for example, anti-carcinogenic and anti-inflammatory action.2There is growing evidence that dietary antioxidants, such as carotenoids, tocopherols and ascorbic acid, protect against photo oxidative reactions and may be useful in preventing diseases related to the stress caused by the free radicals.4,5
Among these antioxidants provided by dietary supplementation, vitamin C plays an important role due to its use for a long time. An important source of such vitamin is the acerola extract, which is one of the important fruits that provide such antioxidants.6The benefits obtained with the therapeutic use of vitamin C in biological trials with animals include the protective effect against damage caused by exposure to radiation and drugs.7 Epidemiological studies also attribute to this vitamin a possible role of protection against the development of tumors in humans, in addition to dietary needs which are essential for the collagen synthesis.8-9
Another antioxidant compound found in nutraceuticals is the lycopene. It is a derivative of carotenoids found in fruits and vegetables, giving a red color to the latter ones. Its preventive effect against photoinduced cell damage has already been proved in studies with rats. For this reason, it is already included in several dermatological products. Its chemopreventive reported effect includes a wide range of epithelial cancers, including lung cancer.2,10
The carotenoids are present in the human skin and contribute to the UV protection. For this reason, the oral supplementation with carotene provides a moderate protection against erythema induced by UV rays. Fruits and vegetables are the main source of carotenoid from the diet: xanthophylls, such as lutein and zeaxanthin, are found in green leafy vegetables or in corn; lycopene is a carotenoid predominant in tomatoes. In vitro and in vivo studies demonstrate that carotenoids can decrease the risk of various diseases by scavenging of singlet oxygen or peroxyl radical, removing peroxide radicals, modulating carcinogenic metabolism, inhibiting cellular proliferation, stimulating gap-junctions and increasing the immune response.10-12
Recently, grape compounds have been especially used in nutraceuticals. The grape seeds and peel contain flavonoids (catechin, epicatechin, procyani-dins and anthocyanins), phenol acids and resveratrol, all of which have functional activities. The procyanidins, for instance, present an in vivo antioxidant activity and could be as important as vitamin E in preventing oxidative damage in tissues, reducing lipid oxidation and/or inhibiting free radical production. 13,14
The use of modern substances, associated with those already classically used in nutraceuticals, have been, in the last years, good alternatives in the approach to skin aging. Recently, the addition of a Biomarine ComplexTM, an extract rich in marine proteins and polysaccharides, in oral skin care opens the potential for significant benefits for the aging skin.15,16
The present study was performed in Brazilian women as a longitudinal study to assess how Brazilian skin responds to a known oral skin supplement. The aim was to repeatedly assess skin quality using subjective and objective variables as well as using skin biopsies.
MATERIALS AND METHODS
The present study is a single stage, phase IV, prospective, non-comparative, open clinical study, approved by the University Ethics Committee in Research in Human Beings. After being instructed and having agreed with the study procedures, by the signing the Free and Explained Consent Term, 50 women between 35 and 60 years of age, phototypes I to III, habitual users of only sunscreen with SPF 15 for, at least, 60 days, were included in the study.
The following exclusion criteria were considered: smoking, daily sun exposure, use of cosmetics in the assessment sites and/or of any other nutraceutical, presenting, during the study, with any dermatosis, systemic disease or need of use of medicines and/or products that hinder the clinical assessment of this treatment, intense sun exposure 60 days before the study, pregnancy or lactation. The appearance of any condition listed as exclusion criteria and the non-use of the therapeutic regimen for 7 consecutive days or 15 alternate days, both in total and in part, were reasons for exclusion from the study.
After the inclusion of the volunteers (Visit 1, D0), they were instructed to use, for 120 days, Imedeen® Time Perfection (105mg of Biomarine ComplexTM, an extract composed of marine proteins and polysaccharides; 14.8mg of Lycophence® GS, composed of lycopene and grape seed extract; 30mg of acerola extract - Ferrosan A/S, Copenhagen, Denmark), 2 tablets a day, together with lunch or dinner, in a single intake, associated with the use of Episol® SPF 15 lotion (Mantecorp Indústria Química e Farmacêutica Ltda., Rio de Janeiro, Brazil) on the face, in the morning and at lunch time.
On Visits 2 (D30), 3 (D60), 4 (D90) and 5 (D120), the volunteers were photographed (Canon® PowerShot G10 - Tokyo, Japan) and underwent assessment through subjective questionnaires answered by physicians and volunteer self-assessment. The parameters assessed were the improvement of: Wrinkles, Fine Expression Lines, Sun Melanosis, Other Hyperchromias, Erythema, Hydration, Radiance, Sebum, Smoothness and Overall Appearance; the possible response standards were: Maintained, Discrete, Moderate, Accentuated and Complete. In these same visits, corneometry, sebumetry and pH-metry (Derma Unit SSC3, Courage+Khazaka Eletronic - Köln, Germany) were also carried out in the left zygomatic region (after removal of sunscreen with tissue paper) and in the upper medial side of the left arm (04cm. below the lower limit of setting of the axillary hair), carried out after 20 minutes of waiting in a room acclimatized at 20ºC. On Visits 1 (D0), 2 (V30) and 5 (D120), both regions underwent an ultrasound examination with a 22Mhz scan (DUBδ-USB, SkinScanne -Luneburg, Germany). On Visits 1 (D0) and 5 (D120) skin biopsies were performed (after completion of instrumental evaluations) from both zygomatic left region and upper medial area of the left arm and fragments were stained with Massons trichome and Verhoeff stains in order to obtain, respectively, a subjective histological evaluation of collagen and elastic fibers of the skin, and to compare which type of profiles these fibers could have after 120 days of usage of the nutraceutical product under study. During the study, volunteers could be absent from a single visit, other than D0 or D120 visit, to be eligible for inclusion.
Non-parametric statistical tests according to Anderson-Darling were used, to allow for a non normal distribution standard (Gauss Curve). A significance level of 0.05 (5%) was chosen as statistically significant, with confidence intervals of 95%. In order to analyze the answers obtained from physicians and volunteers questionnaires, the Equality of Two Proportions was used. For corneometry, pH-metry, sebumetry and ultrasound responses, the Wilcoxon test and the Friedman test were used.
Out of 50 volunteers, 42 (84%) concluded the study; 8 volunteers did not conclude the study based on personal reasons, with no relation to adverse events (which were not seen in any participant during the study). The average age was 46.3 years; sixteen of them had phototype II and twenty-six had phototype III. Results were obtained from the analyses of the clinical response assessment questionnaires, both from the medical team and from volunteer self-assessment. From D30, that is, 30 days after the use of the product, clinical response standards were attributed, and the results of each item was compared, always in relation to D30. In the Tables, the p-values that presented statistical significance (p<0.05) are shown in red and with an asterisk (*).
Both in the Medical Assessment Questionnaire, and in the Volunteer Self-Assessment Questionnaire, a clinical improvement with the use of the product was observed (which is represented by reduction of responses "Maintained", showing in some clinical items, such as Wrinkles, with a statistically significant response already comparing D60 with D30) in all items, for the medical team, and in the items Wrinkles, Fine Lines, Other Hyperchromias, Hydration, Radiance, Smoothness and Overall Appearance, from the volunteers themselves (Graphics 1 and 2). All of the criteria showed a gradual improvement throughout the time of the clinical study which can be observed in each Figure provided.
From the Medical Assessment, at the end of the study (D120), for each clinical item assessed there were the following statistically significant improvement responses: Wrinkles, 45% Discrete (p<0.001) and 12% Moderate (p=0.021); Fine Lines, 29% Moderate (p<0.001); Melanosis, 52% Discrete (p=0.014) and 26% Moderate (p<0.001); Other Hyperchromias, 29% Moderate (p<0.001); Erythema, 31% Moderate (p<0.001) and 12% Accentuated (p=0.0021); Hydration, 31% Moderate (p<0.001); Radiance, 41% Moderate (p<00.1) and 17% Accentuated (p=0.006); Sebum, 41% Moderate (p=0.001); Smoothness, 43% Moderate (p<0.001) and 19% Accentuated (p=0.003); Overall Appearance, 38% Moderate (p<0.001) and 10% Accentuated (p=0.04).
From the Volunteer Assessment, at the end of the study (D120), for each item assessed there were the following statistically significant improvement responses: Wrinkles, 38% Accentuated (p<0.001); Fine Lines, 38% Accentuated (p=0.002); Other Hyperchromias, 14% Accentuated (p=0.048); Hydration, 10% Discrete (p<0.001), 50% Accentuated (p=0.003), 21% Complete (p=0.0024); Radiance, 10% Discrete (p<00.1) and 48% Accentuated (p<0.001); Smoothness, 14% Discrete (p=0.004) e 43% Accentuated (p<0.001); Overall Appearance, 7% Discrete (p<0.001), 33% Moderate (p=0.003) and 45% Accentuated (p=0.01).
Comparing the beginning (D0) with the end of the study (D120), in regards to corneometry and pHmetry, we noted that there were, respectively, an increase (25.41%, that is, from 50.85 to 63.77, on the face; 35.17%, that is, from 39.95 to 54, on the arm) and a reduction (10.37%, that is, from 5.59 to 5.01, on the face; 10.10%, that is, from 5.64 to 5.07, on the arm), visit-to-visit, of the parameter values for both techniques, in both sites (p<0.001) (Table 1, Graphic 3). This shows that there was an improvement of skin hydration and a reduction of the pH (acidification) of the skin. In regards to sebumetry, we noted an instrumental change only on the face, as the changes on the arm were not statistically significant at the end of study (Table 1, Graphic 3). A 29.26% reduction was obtained (from 102.7mg/cm2 to 72.64mg/cm2, p<0.001) on this site, which shows a reduction of facial seborrhea.
For the analysis of the dermal density through ultrasound, we noted that there was a gradual increase of values of its parameters during the period of use of the product [face: 49.94%, from 26.31 (D0) to 39.45 (D120), p<0.001; arm: 13.90%, from 61.71 (D0) to 70.29 (D120), p=0.002), which is clearly illustrated by the images obtained from the Ultrasound device display (Table 2, Graphic 4 and Figure 1).
According to subjective histological analysis, the dermatopathologist observed an increase of dermal density of collagen [face (88.1% of volunteers; p<0.001) and arm (28.7%of volunteers; p<0.001)], with the same pattern of response to elastic fibers [face 85.7% of volunteers; p<0.001) and arms (9.5% of volunteers; p<0.001)], during the 120 days of study (Graphic 5 and Figure 2).
In the chronological aging, free radicals are naturally formed in the human metabolism; however, in the extrinsic aging, they are produced by external factors, such as exposure to UV rays, smoking and alcohol consumption.1,2
The presence of endogenous defense mechanisms, such as antioxidant enzymes (superoxide dismutase, catalase, glutathione peroxidase) and non-enzymatic antioxidant molecules (vitamins C and E, glutathione and ubiquinone), reduce and neutralize these free radical molecules produced during the aging process, protecting the organism against their action. Some of these defense mechanisms may be inhibited by the UV light action (extrinsic aging), as well as having their quantity reduced along the years (intrinsic aging). Thus, these situations reduce such natural defense mechanisms, whilst increasing the production of reactive oxygen species, resulting in skin aging.2,11,17,18
Based on this scenario, the use of oral supplement products, known as nutraceuticals, rich in antioxidant compounds, assume an important role in the human being's health. Dietary intervention studies in humans, based on the use of antioxidant compounds, show how these compounds may protect us against environmental insults and neutralize sun-induced effects on the skin.
In this study, we noted a clear and significant clinical benefit to signs of skin aging through the daily use of a nutraceutical product, rich in marine proteins and polysaccharides, lycopene, flavonoids and grape procyanidins, as well as vitamin C (Figure 3).
Comparing the results obtained in the study, both in the Medical Assessment and in the Volunteer Assessment, there was an improvement of the Overall Appearance of the skin of the participants.
Studies using Biomarin ComplexTM (105 mg/tablet) have been reported. An early pilot study from 1990 showed that Biomarine ComplexTM combined with acerola extract (rich in vitamin C) and zinc, 2 tablets per days for 90 days, had a clinical improvement of fine lines and cutaneous pigmentation. Through the ultrasound assessment of the periocular region, there was an increase of thickness of the epidermis of 8.3% and of the dermis of 83.3%. Moreover, this instrumental measurement of the facial skin showed a 10% increase.15
Later, 144 volunteers, between 35 and 50 years old, with phototypes II or III, used two tablets daily of a combination of Biomarine ComplexTM (105mg), vita-min C and zinc, for 12 months. During the first 3 months the study was divided into two groups, one (active), another placebo. At the end of this period, there was an increase of the dermal thickness, assessed by ultrasound and a reduction of fine lines, in the group with the related nutraceutical, compared to the placebo group. During the following 9 months, when all the volunteers used the combination, there were an increase of the dermal thickness assessed by ultrasound, both papillary and reticular dermis, a reduction of fine lines, mainly periocular ones, and a reduction of transepidermal water loss.16
Additional placebo controlled studies with Biomarin ComplexTMin combination with various nutrients and phytonutrients have been performed in women of both pre and postmenopause age. 19,20 These studies observed the positive and beneficial results on skin aging by Heule and Kiefer and Eilefsen and are also valid for older skin.20
In the present study, we noted that the clinical improvement, with the use of an oral supplement rich in Biomarine ComplexTM, confirms what has already been reported in the literature. 15,16,19,20The volunteers had an improvement of the signs of skin photoaging, certified both by the dermatologists clinical examination and by the volunteers self-assessment.
In agreement with earlier studies, we also used objective measurements since this is important in order to assess reproducible and credible effects in the absence of a placebo group. 19,20The lack of objective criteria to obtain the clinical response to various treatments, for several dermatosis, is a great challenge in dermatology, which, many times, limits the true registration of the assessed clinical standard, secondary to a certain therapy. Accordingly, we associated three types of modalities to obtain the clinical evolution of the proposed treatment: subject assessment (medical and volunteers), digital photography registration, biometric response instruments such as corneometry, pH-metry, sebumetry and dermal ultrasound scanning.
The epidermal stratum corneum is considered the essential structure for the skin hydration.21,22 Its acid character, which is the reason it is also called acid mantle, is essential to establish the permeability of the epidermal barrier and to control the cohesion and integrity of the stratum corneum. 23 The origin of such acidification arises from three endogenous processes: production of free fatty acids, via secretory phospholipase-A2; production of trans-urocanic acid, from the histidine, catalyzed by histadase; H+ ion secretion by Na+/H+ pump.23 The acidification of the stratum corneum is essential for the permeability of the epidermal barrier. The recovery process normally occurs in an acid pH, which is postponed in a neutral pH, as the enzymes that secrete the lipids of the bilamellar lipid barrier are activated in an acid pH. This intensifies the cohesion and integrity of the stratum corneum.23Consequently, such particularities increase the capacity of maintaining the skin hydrated.21,23
This study showed an increase of hydrating of the corneal layer (25.41%, on the face, and 35.17%, on the arm), directly proportional to its pH (10.37%, on the face, and 10.10%, on the arm), which is in agreement with the findings in the literature for the usual mechanism of skin hydration.21,23 To us this important change of the pH and its' relation to improved skin hydration is new data not shown before with an oral nutraceutical supplement. Earlier studies have shown general improvement in skin hydration, but with little understanding of cause and effect.
Cutaneous xerosis is an important sign of cutaneous dehydration.21,22 Lycopene, a carotenoid antioxidant, may be involved in the clinical results found in the present study, since its presence, in higher concentrations in the skin, reduces the cutaneous xerosis, which is the initial stage of the formation of wrinkles.24
Acerola is also used in nutraceutical products, due to its high content of vitamin C, which is able to scavenge free radicals with great efficiency, in addition to having effect against the damage caused by the exposure to radiations.7-9 Vitamin C contributes to the formation of the epidermal barrier as it increases the epidermal differentiation and stimulates the blood flow through the production of nitric oxide.24
Another reason that could have helped to improve the skin hydrating is the fact that the oral intake of polyphenols prevents the change of the epidermal barrier by increasing the skin tolerance to the UVB action.24 Grape seed extract used in the present trial, is a product is rich in polyphenols, many with flavonoid structure. In vitro studies with flavonoids show an antioxidant activity greater than that with vitamins E and C.25
In relation to the reduction of the facial sebum of 29.26%, obtained at the end of the study, we could not at present find any references in the literature to explain this effect. This finding deserves further studies regarding specific effective components.
For the analysis of the dermal density by ultrasound, we noted that there was a continuous gradual increase of density values during the period of the use of the product (face: 50%, p<0,001; arm: 14%, p=0.002)) (Table 2 and Graphic 4). This effect is also well characterized by the density images obtained from the Ultrasound device display (Graphic 1).
Probably the vitamin C, also present in the supplement complex of the study, could have played a contributing role to the result. It provides aesthetic results to the skin upon its oral use, as it has the capacity of increasing the stability and reducing the collagen's thermal sensibility, stimulating the production of collagen both in vitro and in vivo, and protecting the skin against UV-induced photodamage.15Such clinical results can be explained by the fact that vitamin C is a cofactor for propyl and lysyl hydroxylases, which, respectively, form hydroxyproline and hydroxylysine, essential for the secretion of procollagen by fibroblasts, as, in vitro, it increases the expression of collagen expression genes.24,26-30
This collagen stimulation with 120 days of use of the nutraceutical in the study could be confirmed by the histological changes observed through Massons trichrome staining. This fact is in accordance with the literature. 24,26-30 Nevertheless, in this study, proliferation of the elastic fibers was noted as well as that of the collagen, a piece of information that can be considered new in literature (Graphic 5 and Figure 2).
It may be concluded from this study that a daily intake of a nutraceutical composed of lycopene, acerola extract, grape seed extract and Biomarine ComplexTM indeed improves the cutaneous signs standards of photoaging, and also contributes to maintain skin hydration, acidity balance of the skin, reduction of facial seborrhea and to an increase of dermal density, as assessed by ultrasound.
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Received on 11.12.2010.
Approved by the Advisory Board and accepted for publication on 24.03.11.
Conflict of interest: None
Financial funding: All expenses related to the study were sponsored by "Ferrosan do Brasil Ltda."
* Work performed at a private clinic - Campinas (SP), Brasil.