1
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Yang B, Lai Q, Chen A, Ye L, Wang X, Lai Y, Liu D, Man MQ. Body Mass Index z Scores Correlate with Epidermal Function in Chinese Children. Diabetes Metab Syndr Obes 2023; 16:3393-3401. [PMID: 37929059 PMCID: PMC10624195 DOI: 10.2147/dmso.s435512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/15/2023] [Indexed: 11/07/2023] Open
Abstract
Background/Objective Epidermal function is altered in a number of cutaneous and extracutaneous disorders. To determine whether epidermal function is also altered in children with obesity, we assessed the correlation between the body mass index (BMI) z score and epidermal function in children. Participants and Methods Participants were enrolled from outpatient clinic, schools and kindergartens. Epidermal biophysical properties, including transepidermal water loss rate, stratum corneum hydration and skin surface pH, were measured on the flexor forearm and shin. Correlations between epidermal biophysical properties and BMI were analyzed. In addition, the association of epidermal biophysical properties with BMI z score was also determined. Results Overall, BMI did not differ significantly between boys and girls among the age groups. BMI z scores correlated negatively with stratum corneum hydration levels and positively with skin surface pH in boys, but not in girls. The negative correlation between TEWL and BMI z score was not significant. Moreover, stratum corneum hydration levels were lower in boys with a BMI z score of ≥2 than in those with a BMI z score of -2 to 0.99. Conclusion Both stratum corneum hydration levels and skin surface pH are significantly correlated with BMI z scores in boys, but not in girls. Whether epidermal function influences BMI or vice versa remains to be determined.
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Affiliation(s)
- Bin Yang
- Department of Dermatology, Dermatology Hospital, Southern Medical University, Guangzhou City, Guangdong, 510091, People’s Republic of China
| | - Qingsong Lai
- Department of Dermatology, Medical Center for Public Health of Puning, Puning City, Guangdong, 515300, People’s Republic of China
| | - Aiqi Chen
- Department of Dermatology, Medical Center for Public Health of Puning, Puning City, Guangdong, 515300, People’s Republic of China
| | - Li Ye
- Department of Dermatology, Dermatology Hospital, Southern Medical University, Guangzhou City, Guangdong, 510091, People’s Republic of China
| | - Xiaohua Wang
- Department of Dermatology, Dermatology Hospital, Southern Medical University, Guangzhou City, Guangdong, 510091, People’s Republic of China
| | - Yulin Lai
- Department of Dermatology, Medical Center for Public Health of Puning, Puning City, Guangdong, 515300, People’s Republic of China
| | - Dan Liu
- Department of Product Development, Dermatology Hospital, Southern Medical University, Guangzhou City, Guangdong, 510091, People’s Republic of China
| | - Mao-Qiang Man
- Department of Product Development, Dermatology Hospital, Southern Medical University, Guangzhou City, Guangdong, 510091, People’s Republic of China
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2
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Zhu T, Yang S, Mauro TM, Man MQ. Association of Epidermal Biophysical Properties with Obesity and Its Implications. Skin Pharmacol Physiol 2023; 36:165-173. [PMID: 37640014 DOI: 10.1159/000533587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/04/2023] [Indexed: 08/31/2023]
Abstract
BACKGROUND Obesity is a condition defined by an excess amount of body fat, with body mass index (BMI) of 30 and higher. It is associated with a number of other medical conditions, including insulin resistance, diabetes mellitus, and cardiovascular diseases, as well as dyslipidemia, and it is also associated with several cutaneous disorders such as atopic dermatitis, psoriasis, intertriginous dermatitis, acanthosis nigricans and skin infections. SUMMARY Evidence suggests a link between obesity and epidermal dysfunction. Generally, individuals with obesity display higher transepidermal water loss rate and lower stratum corneum hydration levels, although no association of obesity with epidermal dysfunction has been documented. Results of skin surface pH are controversial. But study demonstrated a positive correlation of BMI with skin surface pH on both the forearm and the shin in males, suggesting that the changes in epidermal function vary with gender in individuals with obesity. KEY MESSAGES This review summarizes the association between obesity and epidermal function, and discusses possible underlying mechanisms. Individuals with obesity exhibit poor epidermal permeability barrier and lower stratum corneum hydration levels. Because of the pathogenic role of compromised epidermal function in inflammation, which is also linked to obesity, improvement in epidermal function could benefit individuals with obesity, particularly those with abnormalities in epidermal function.
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Affiliation(s)
- Tingting Zhu
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Shuyun Yang
- Department of Dermatology, The People's Hospital of Baoshan, Baoshan, China
| | - Theodora M Mauro
- Department of Dermatology, Veterans Affairs Medical Center San Francisco, University of California San Francisco, San Francisco, California, USA
| | - Mao-Qiang Man
- Department of Dermatology, Veterans Affairs Medical Center San Francisco, University of California San Francisco, San Francisco, California, USA
- Dermatology Hospital, Southern Medical University, Guangzhou, China
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3
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Lütgerath C, Weiß C, Faulhaber J, Karsai S. Comparison of a novel aluminum lactate-based with an aluminum chloride-based antiperspirant in excessive axillary and inguinal perspiration: first randomized controlled trial. J Dtsch Dermatol Ges 2022; 20:1589-1601. [PMID: 36495093 DOI: 10.1111/ddg.14898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 08/05/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Topical aluminum salts are a commonly used remedy for excessive axillary perspiration. To the contrary, less is known about their anhidrotic potential in the groin. This study sought to compare the anhidrotic efficacy and tolerability of an aluminum chloride-based antiperspirant to an innovative aluminum lactate-based antiperspirant in healthy study participants presenting with excessive axillary and inguinal perspiration. PARTICIPANTS AND METHODS Fifty participants were enrolled in this open open-labeled, randomized, controlled trial. Following a baseline assessment, efficacy was analyzed at two time points throughout the study period by means of four physiological parameters (pH value, transepidermal water loss, gravimetric analysis, Minor test) and two questionnaires (Dermatology Life Quality Index, Hyperhidrosis Disease Severity Scale). Tolerability was evaluated via symptom diaries. RESULTS Both study preparations were comparably effective in reducing axillary and inguinal perspiration and exhibited increasing effectiveness over time. In both treatment regions, the aluminum lactate-based antiperspirant had a more favorable tolerability profile than the aluminum chloride-based antiperspirant. CONCLUSIONS Due to its comparable efficacy and - most noticeably in the groin - superior tolerability, this study supports the use of topical aluminum lactate as a first-line option to control excessive axillary and inguinal perspiration.
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Affiliation(s)
| | - Christel Weiß
- Department of Medical Statistics and Biomathematics, University Medical Centre, Mannheim, Germany
| | - Jörg Faulhaber
- MVZ Hautzentrum am Kalten Markt GmbH, Schwäbisch Gmünd, Germany
| | - Syrus Karsai
- Dermatologikum Hamburg GmbH, Hamburg, Germany.,Department of Dermatology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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4
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Lütgerath C, Weiß C, Faulhaber J, Karsai S. Vergleich eines neuen Aluminiumlactat-basierten mit einem Aluminiumchlorid-basierten Antitranspirant bei übermäßigem axillären und inguinalen Schwitzen: Erste randomisierte kontrollierte Studie. J Dtsch Dermatol Ges 2022; 20:1589-1602. [PMID: 36508376 DOI: 10.1111/ddg.14898_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 08/05/2022] [Indexed: 12/14/2022]
Affiliation(s)
| | - Christel Weiß
- Medizinische Statistik, Biomathematik und Informationsverarbeitung, Universitätsmedizin Mannheim
| | | | - Syrus Karsai
- Dermatologikum Hamburg GmbH, Hamburg.,Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg
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5
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Green M, Feschuk AM, Kashetsky N, Maibach HI. "Normal" TEWL-How Can it be Defined?: A Systematic Review. Exp Dermatol 2022; 31:1618-1631. [PMID: 35753062 DOI: 10.1111/exd.14635] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 05/28/2022] [Accepted: 06/23/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Transepidermal water loss (TEWL), the total non-eccrine sweat water evaporating from a given area of epidermis over time, is a measurement of skin barrier integrity. Skin diseases (e.g. psoriasis and atopic dermatitis) often result in transient increases in TEWL, so knowledge of "normal" TEWL values may be used to predict disease progression in dermatological settings. Variables such as age, race, and anatomic location have been suggested to affect TEWL, but current regulatory agencies have failed to control for additional variables of interest. Thus, this review summarizes variables that may cause TEWL variation. METHODS A comprehensive literature search was performed using Embase, PubMed, and Web of Science to find human studies that provided data on variables affecting TEWL. RESULTS 31 studies, analyzing 22 affecting TEWL, were identified. Variables causing increased TEWL were mask-use (n=1), Dry Eye Disease (n=1), Chronic Venous Disease (n=1), Coronary Artery Disease (n=1), age (infants vs. adults) (n=4), nourishment in infants (n=1), stress within individuals (n=2), Body Mass Index (n=2), bathing versus showering (n=2), and scratching/friction (n=1). Variables with decreases in TEWL were genetic variability with SNPs on chromosome 9q34.3 (n=1) and cancer-cachexia (n=1). CONCLUSION We summarized 12 variables that impact TEWL and are not typically controlled for in experimental settings. Therefore, defining normal TEWL may currently be problematic. Thus, regulatory agencies should provide stricter guidelines on proper measurement of TEWL to minimize human introduced TEWL variation, and we should continue to examine factors impacting individual skin integrity.
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Affiliation(s)
- Maxwell Green
- Tulane University School of Medicine, New Orleans, USA
| | - Aileen M Feschuk
- Faculty of Medicine, Memorial University of Newfoundland, St John's, Newfoundland & Labrador, Canada
| | - Nadia Kashetsky
- Faculty of Medicine, Memorial University of Newfoundland, St John's, Newfoundland & Labrador, Canada
| | - Howard I Maibach
- Department of Dermatology, University of California San Francisco, San Francisco, California, United States
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6
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Ye L, Lai Q, Wen S, Wang X, Yang B, Man MQ. Correlation of Body Mass Index with Epidermal Biophysical Properties Varies with Gender in Chinese. Skin Pharmacol Physiol 2022; 35:215-223. [PMID: 35378539 PMCID: PMC9254306 DOI: 10.1159/000524295] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/07/2022] [Indexed: 11/19/2022]
Abstract
Background Epidermal function is associated with diabetes and renal disease. Whether obesity can reflect the changes in epidermal function is not clear yet. Objective We assessed here the correlation of epidermal functions with body mass index (BMI) in a large Chinese cohort. Methods and Subjects A total of 1,405 Chinese aged 21–98 years old were enrolled in this study. Epidermal functions, including transepidermal water loss (TEWL), stratum corneum hydration, and skin surface pH, were measured on the flexor forearm and the shin. Subjects' height and body weight were also measured. Results Age positively correlated with both TEWL and skin surface pH, while it negatively correlated with stratum corneum hydration on both the forearm and the shin of females. Similarly, age positively correlated with skin surface pH, while negatively correlating with stratum corneum hydration on both the forearm and the shin of males. In females, BMI positively correlated with skin surface pH, while it negatively correlated with stratum corneum hydration on both the forearm and the shin. However, BMI correlated neither with skin surface pH on both the forearm and the shin nor with stratum corneum hydration on the shin of males. Conclusion These results demonstrate that correlations of BMI with age and epidermal functions vary with gender.
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Affiliation(s)
- Li Ye
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Qingsong Lai
- Center of Chronic Disease Prevention, Puning, China
| | - Si Wen
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Xiaohua Wang
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Bin Yang
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Mao-Qiang Man
- Dermatology Hospital, Southern Medical University, Guangzhou, China
- *Mao-Qiang Man,
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7
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Darlenski R, Mihaylova V, Handjieva-Darlenska T. The Link Between Obesity and the Skin. Front Nutr 2022; 9:855573. [PMID: 35369048 PMCID: PMC8965625 DOI: 10.3389/fnut.2022.855573] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 02/11/2022] [Indexed: 11/13/2022] Open
Abstract
Obesity as a multi-organ disease that affects the entire human organism. Notably, the skin is no exclusion from this postulate. Skin changes in obese patients have been widely studied with regards to mechanical friction, skin infections, and skin hypertrophic conditions, such as acanthosis nigricans and, most commonly, fibromas (skin tags). Almost 60–70% of obese patients present with a variety of skin changes. Herein, we discuss our own experience and review the complex skin changes in obesity. The role of metabolic syndrome and obesity are responsible for the epidemiological prevalence and are involved in the pathogenesis of chronic inflammatory skin diseases, such as psoriasis, atopic dermatitis, and skin malignancies. Here, we comment on the role of nutritional interventions in these patients as it has been proven that low-calorie diet and weight loss is related to improvement of inflammatory skin diseases. The readership of this paper will receive up-to-date overview on the connection between obesity and the skin that is of a practical importance to any clinician working in the field.
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Affiliation(s)
- Razvigor Darlenski
- Department of Dermatology and Venereology, Acibadem Cityclinic Tokuda Hospital, Sofia, Bulgaria
- Department of Dermatology and Venereology, Trakia University, Stara Zagora, Bulgaria
- *Correspondence: Razvigor Darlenski,
| | - Vesselina Mihaylova
- Department of Pharmacology and Toxicology, Medical Faculty, Medical University, Sofia, Bulgaria
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8
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Gray M, Bliss DZ, McNichol L. Moisture-Associated Skin Damage: Expanding and Updating Practice Based on the Newest ICD-10-CM Codes. J Wound Ostomy Continence Nurs 2022; 49:143-151. [PMID: 35255065 DOI: 10.1097/won.0000000000000865] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Moisture-associated skin damage (MASD) occurs when skin is repeatedly exposed to various sources of bodily secretions or effluents, often leading to irritant contact dermatitis with inflammation, with or without denudation of affected skin. In 2020, the Wound, Ostomy and Continence Nurses Society took an initiative that led to the addition of multiple International Classification for Diseases codes for irritant contract dermatitis caused by various forms of MASD for use in the United States (ICD-10-CM). In the last issue of the Journal of Wound, Ostomy and Continence Nursing, a clinical practice alert identifying the various new codes was published that summarized each of the new codes and provided highlights of the descriptions of each of the these codes. This is the first in a series of 2 articles providing a more detailed description of the newest irritant contact dermatitis codes linked to MASD. Specifically, this article reviews the clinical manifestations and assessment, pathophysiology, epidemiology, prevention, and management of irritant contact dermatitis due to saliva, respiratory secretions, and fecal or urinary incontinence.
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Affiliation(s)
- Mikel Gray
- Mikel Gray, PhD, RN, FNP, PNP, CUNP, CCCN, FAANP, FAAN, Department of Urology, University of Virginia, Charlottesville
- Donna Z. Bliss, PhD, RN, FGSA, FAAN, University of Minnesota School of Nursing, Minneapolis
- Laurie McNichol, MSN, RN, CNS, GNP, CWOCN, CWON-AP, FAAN, WOC Nurse, Cone Health, Greensboro, North Carolina
| | - Donna Z Bliss
- Mikel Gray, PhD, RN, FNP, PNP, CUNP, CCCN, FAANP, FAAN, Department of Urology, University of Virginia, Charlottesville
- Donna Z. Bliss, PhD, RN, FGSA, FAAN, University of Minnesota School of Nursing, Minneapolis
- Laurie McNichol, MSN, RN, CNS, GNP, CWOCN, CWON-AP, FAAN, WOC Nurse, Cone Health, Greensboro, North Carolina
| | - Laurie McNichol
- Mikel Gray, PhD, RN, FNP, PNP, CUNP, CCCN, FAANP, FAAN, Department of Urology, University of Virginia, Charlottesville
- Donna Z. Bliss, PhD, RN, FGSA, FAAN, University of Minnesota School of Nursing, Minneapolis
- Laurie McNichol, MSN, RN, CNS, GNP, CWOCN, CWON-AP, FAAN, WOC Nurse, Cone Health, Greensboro, North Carolina
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9
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Rodriguez AJ, Boonya-Ananta MT, Gonzalez M, Le VND, Fine J, Palacios C, McShane MJ, Coté GL, Ramella-Roman JC. Skin optical properties in the obese and their relation to body mass index: a review. JOURNAL OF BIOMEDICAL OPTICS 2022; 27:030902. [PMID: 35352513 PMCID: PMC8963797 DOI: 10.1117/1.jbo.27.3.030902] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
SIGNIFICANCE Obesity is a worldwide epidemic contributing directly to several cardiovascular risk factors including hypertension and type 2 diabetes. Wearable devices are becoming better at quantifying biomarkers relevant for the management of health and fitness. Unfortunately, both anecdotal evidence and recent studies indicate that some wearables have higher levels of error when utilized by populations with darker skin tones and high body mass index (BMI). There is an urgent need for a better evaluation of the limits of wearable health technologies when used by obese individuals. AIMS (1) To review the current know-how on changes due to obesity in the skin epidermis, dermis, and subcutis that could affect the skin optical properties; (2) for the green wavelength range, to evaluate the difference in absorption and scattering coefficients from the abdominal skin between individuals with and without elevated BMI. The changes include alterations in layer thickness and cell size, as well as significant differences in chromophores and scatterer content, e.g., water, hemoglobin, collagen, and lipids. APPROACH We have summarized literature pertaining to changes in skin and its components in obesity and report the results of our search using articles published between years 1971 and 2020. A linear model was used to demonstrate the absorption and reduced scattering coefficient of the abdominal skin of individuals with and without elevated BMI in the green wavelength range (530 to 550 nm) that is typically found in most wearables. RESULTS The general trends indicate a decrease in absorption for both dermis and subcutis and an increase in reduced scattering for both epidermis and dermis. At 544-nm wavelength, a typical wavelength used for photoplethysmography (PPG), the absorption coefficient's relative percentage difference between high and low BMI skin, was 49% in the subcutis, 19% in the dermis, and negligible in the epidermis, whereas the reduced scattering coefficient relative difference was 21%, 29%, and 165% respectively. CONCLUSIONS These findings suggest that there could be significant errors in the output of optical devices used for monitoring health and fitness if changes due to obesity are not accounted for in their design.
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Affiliation(s)
- Andres J. Rodriguez
- Florida International University, Department of Biomedical Engineering, Miami, Florida, United States
| | | | - Mariacarla Gonzalez
- Florida International University, Department of Biomedical Engineering, Miami, Florida, United States
| | - Vinh Nguyen Du Le
- Florida International University, Department of Biomedical Engineering, Miami, Florida, United States
| | - Jesse Fine
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
| | - Cristina Palacios
- Florida International University, Robert Stempel College of Public Health and Social Work, Miami, Florida, United States
| | - Mike J. McShane
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
- Texas A&M University, TEES Center for Remote Health Technologies and Systems, College Station, Texas, United States
- Texas A&M University, Department of Material Science and Engineering, College Station, Texas, United States
| | - Gerard L. Coté
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
- Texas A&M University, TEES Center for Remote Health Technologies and Systems, College Station, Texas, United States
| | - Jessica C. Ramella-Roman
- Florida International University, Department of Biomedical Engineering, Miami, Florida, United States
- Florida International University, Herbert Wertheim College of Medicine, Miami, Florida, United States
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10
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Ajmal, Boonya-Ananta T, Rodriguez AJ, Du Le VN, Ramella-Roman JC. Monte Carlo analysis of optical heart rate sensors in commercial wearables: the effect of skin tone and obesity on the photoplethysmography (PPG) signal. BIOMEDICAL OPTICS EXPRESS 2021; 12:7445-7457. [PMID: 35003845 PMCID: PMC8713672 DOI: 10.1364/boe.439893] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/23/2021] [Accepted: 10/05/2021] [Indexed: 08/23/2023]
Abstract
Commercially available wearable devices have been used for fitness and health management and their demand has increased over the last ten years. These "general wellness" and heart-rate monitoring devices have been cleared by the Food and Drug Administration for over-the-counter use, yet anecdotal and more systematic reports seem to indicate that their error is higher when used by individuals with elevated skin tone and high body mass index (BMI). In this work, we used Monte Carlo modeling of a photoplethysmography (PPG) signal to study the theoretical limits of three different wearable devices (Apple Watch series 5, Fitbit Versa 2 and Polar M600) when used by individuals with a BMI range of 20 to 45 and a Fitzpatrick skin scale 1 to 6. Our work shows that increased BMI and skin tone can induce a relative loss of signal of up to 61.2% in Fitbit versa 2, 32% in Apple S5 and 32.9% in Polar M600 when considering the closest source-detector pair configuration in these devices.
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Affiliation(s)
- Ajmal
- Department of Biomedical Engineering,
Florida International University, 10555 W
Flagler St, Miami, FL 33174, USA
| | - Tananant Boonya-Ananta
- Department of Biomedical Engineering,
Florida International University, 10555 W
Flagler St, Miami, FL 33174, USA
| | - Andres J. Rodriguez
- Department of Biomedical Engineering,
Florida International University, 10555 W
Flagler St, Miami, FL 33174, USA
| | - V. N. Du Le
- Department of Biomedical Engineering,
Florida International University, 10555 W
Flagler St, Miami, FL 33174, USA
| | - Jessica C. Ramella-Roman
- Department of Biomedical Engineering,
Florida International University, 10555 W
Flagler St, Miami, FL 33174, USA
- Herbert Wertheim College of Medicine,
Florida International University, 11200 SW
8th St, Miami, FL 33199, USA
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11
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Andrade JM, Domínguez-Martín EM, Nicolai M, Faustino C, Rodrigues LM, Rijo P. Screening the dermatological potential of plectranthus species components: antioxidant and inhibitory capacities over elastase, collagenase and tyrosinase. J Enzyme Inhib Med Chem 2021; 36:257-269. [PMID: 33322969 PMCID: PMC7808741 DOI: 10.1080/14756366.2020.1862099] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A series of Plectranthus spp. plant extracts (aqueous, acetonic, methanolic and ethyl acetic) obtained from eight different species, and previously isolated compounds (ranging from polyphenols, diterpenes and triterpenes), were assayed for in vitro inhibition of the skin-related enzymes tyrosinase, collagenase and elastase, and for studying their antioxidant properties. The ethyl acetic extracts of P. grandidentatus and P. ecklonii registered the highest antioxidant activity, whereas acetonic, methanolic and ethyl acetic extracts of P. ecklonii, P. grandidentatus, P. madagascariensis and P. saccatus concerning the enzymatic inhibition assays revealed high anti-tyrosinase and anti-collagenase activities. From the isolated compounds tested, abietane diterpenes and triterpenes were highly active against tyrosinase and elastase activity. Overall, the experimental results showed the powerful antioxidant and inhibitory action on skin-related enzymes tyrosinase, collagenase and elastase of Plectranthus spp. extracts and/or isolated compounds, supporting their further research as bioactive metabolites against skin sagging and hyperpigmentation in cosmetic and pharmaceutical formulations.
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Affiliation(s)
- Joana M Andrade
- Research Center for Biosciences and Health Technologies (CBIOS), Universidade Lusófona de Humanidades e Tecnologias, Lisboa, Portugal
| | - Eva María Domínguez-Martín
- Research Center for Biosciences and Health Technologies (CBIOS), Universidade Lusófona de Humanidades e Tecnologias, Lisboa, Portugal.,Department of Biomedical Sciences, Faculty of Pharmacy, University of Alcalá, Madrid, Spain
| | - Marisa Nicolai
- Research Center for Biosciences and Health Technologies (CBIOS), Universidade Lusófona de Humanidades e Tecnologias, Lisboa, Portugal
| | - Célia Faustino
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon (ULisboa), Lisbon, Portugal
| | - Luís Monteiro Rodrigues
- Research Center for Biosciences and Health Technologies (CBIOS), Universidade Lusófona de Humanidades e Tecnologias, Lisboa, Portugal
| | - Patrícia Rijo
- Research Center for Biosciences and Health Technologies (CBIOS), Universidade Lusófona de Humanidades e Tecnologias, Lisboa, Portugal.,Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon (ULisboa), Lisbon, Portugal
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12
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Characterizing the Mechanism of Action of Essential Oils on Skin Homeostasis—Data from Sonographic Imaging, Epidermal Water Dynamics, and Skin Biomechanics. COSMETICS 2021. [DOI: 10.3390/cosmetics8020036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Essential oils (EOs) have been recognized as materials of interest for dermatological applications, although some doubts remain regarding their safety and efficacy. We studied the action mechanisms of EOs from lavender and sage in human skin. Extracted EOs were incorporated (at 5% and 10%) in almond oil as a vehicle. Eleven healthy volunteers were selected and the prepared oils were tested on both forearms. All procedures respected the principles of good clinical practice. Effects were followed through high resolution sonography (HRS), epidermal water dynamics, and biomechanics. All variables were measured before and 30 min after application. Nonparametric statistical comparisons were applied (p < 0.05). HRS revealed a more echogenic epidermis, with a significant echogenicity decrease in the dermis (higher water retention) for all formulations. Significant TEWL decrease and an increase in superficial and deep epidermal hydration were also observed. These results indicate that EOs penetrate only into the most superficial layers of the skin, which is important for their safety profile. Furthermore, this “filmogenic” mechanism improving the epidermal water balance seems to connect directly with the observed biomechanical enhancement. These results confirm the clinical relevance of these compounds, in particular to restore the epidermal water content and prevent xerosis and other related disorders in sensitive (atopic, elderly) patients.
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13
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Fine J, Branan KL, Rodriguez AJ, Boonya-ananta T, Ajmal, Ramella-Roman JC, McShane MJ, Coté GL. Sources of Inaccuracy in Photoplethysmography for Continuous Cardiovascular Monitoring. BIOSENSORS 2021; 11:126. [PMID: 33923469 PMCID: PMC8073123 DOI: 10.3390/bios11040126] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 03/30/2021] [Accepted: 04/09/2021] [Indexed: 12/14/2022]
Abstract
Photoplethysmography (PPG) is a low-cost, noninvasive optical technique that uses change in light transmission with changes in blood volume within tissue to provide information for cardiovascular health and fitness. As remote health and wearable medical devices become more prevalent, PPG devices are being developed as part of wearable systems to monitor parameters such as heart rate (HR) that do not require complex analysis of the PPG waveform. However, complex analyses of the PPG waveform yield valuable clinical information, such as: blood pressure, respiratory information, sympathetic nervous system activity, and heart rate variability. Systems aiming to derive such complex parameters do not always account for realistic sources of noise, as testing is performed within controlled parameter spaces. A wearable monitoring tool to be used beyond fitness and heart rate must account for noise sources originating from individual patient variations (e.g., skin tone, obesity, age, and gender), physiology (e.g., respiration, venous pulsation, body site of measurement, and body temperature), and external perturbations of the device itself (e.g., motion artifact, ambient light, and applied pressure to the skin). Here, we present a comprehensive review of the literature that aims to summarize these noise sources for future PPG device development for use in health monitoring.
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Affiliation(s)
- Jesse Fine
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA; (J.F.); (K.L.B.)
| | - Kimberly L. Branan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA; (J.F.); (K.L.B.)
| | - Andres J. Rodriguez
- Department of Biomedical Engineering, Florida International University, Miami, FL 33174, USA; (A.J.R.); (T.B.-a.); (A.); (J.C.R.-R.)
| | - Tananant Boonya-ananta
- Department of Biomedical Engineering, Florida International University, Miami, FL 33174, USA; (A.J.R.); (T.B.-a.); (A.); (J.C.R.-R.)
| | - Ajmal
- Department of Biomedical Engineering, Florida International University, Miami, FL 33174, USA; (A.J.R.); (T.B.-a.); (A.); (J.C.R.-R.)
| | - Jessica C. Ramella-Roman
- Department of Biomedical Engineering, Florida International University, Miami, FL 33174, USA; (A.J.R.); (T.B.-a.); (A.); (J.C.R.-R.)
- Herbert Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA
| | - Michael J. McShane
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA; (J.F.); (K.L.B.)
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA
- Center for Remote Health Technologies and Systems, Texas A&M Engineering Experimentation Station, Texas A&M University, College Station, TX 77843, USA
| | - Gerard L. Coté
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA; (J.F.); (K.L.B.)
- Center for Remote Health Technologies and Systems, Texas A&M Engineering Experimentation Station, Texas A&M University, College Station, TX 77843, USA
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14
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Monteiro Rodrigues L, Fluhr JW. EEMCO Guidance for the in vivo Assessment of Biomechanical Properties of the Human Skin and Its Annexes: Revisiting Instrumentation and Test Modes. Skin Pharmacol Physiol 2019; 33:44-60. [PMID: 31747675 DOI: 10.1159/000504063] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/10/2019] [Indexed: 11/19/2022]
Abstract
Biomechanics of the skin is an important subject in skin research. It has been studied for many decades involving various technologies and methods to characterize and quantify mechanical properties of the skin under different in vivo conditions. The present EEMCO paper reviews the current rel-evant information, providing practical orientation to researchers dedicated to in vivo assessment of biomechanics of skin and its annexes. We discuss the available non-invasive instruments, including their principles and variables. A correspondence between the descriptors nomenclature proposed by Agache and the designation for the suction-based standard instruments is proposed. The addressed properties include skin softness/stiffness, firmness, elasticity, elastic and viscoelastic properties, extensibility, resilience, anisotropy, acoustical shock wave hardness, friction (in relation to topographic properties), thickness, fiber/stress mechanics (bending, cyclic, tensile, fatigue, or torsion), and hardness. We provide the relation of these properties to biomechanical descriptors and in some cases to SI units. Practical guidance for the proper use of these instruments, limitations, and possible interpretations are provided, while discussing the meaning of descriptive or "phenomenological" variables. For studies intended to quantify the effect of an intervention with regard to mechanical properties, we recommend a minimum of 30-40 participants, based on normal distribution of the data sets. Some important limitations are recognized, including the lack of standardization of procedures and calibration of instruments, which compromises the relevance and real nature of the descriptors/parameters obtained with these devices. The present work highlights an approach to a better practice and a science-supported biomechanical assessment of human skin, hair, and nails.
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Affiliation(s)
- Luis Monteiro Rodrigues
- CBIOS - Universidade Lusófona Research Centre for Biosciences and Health Technologies, Lisbon, Portugal
| | - Joachim W Fluhr
- Department of Dermatology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany,
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15
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Hirt PA, Castillo DE, Yosipovitch G, Keri JE. Skin changes in the obese patient. J Am Acad Dermatol 2019; 81:1037-1057. [DOI: 10.1016/j.jaad.2018.12.070] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022]
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16
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Mori S, Shiraishi A, Epplen K, Butcher D, Murase D, Yasuda Y, Murase T. Characterization of skin function associated with obesity and specific correlation to local/systemic parameters in American women. Lipids Health Dis 2017; 16:214. [PMID: 29132429 PMCID: PMC5683228 DOI: 10.1186/s12944-017-0608-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 11/05/2017] [Indexed: 01/26/2023] Open
Abstract
Background Obesity is considered problematic not only as a major cause of diabetes, hypertension, and dyslipidemia, but also as a risk of intractable dermatosis; however influence of obesity on skin function has not been clarified. To clarify the mechanism of obesity-associated skin disorders, we aimed to characterize the skin function of subjects with obesity, and identify possible influencing factors. Methods Complex analyses including instrumental measurement, biochemical and lipidomics were performed for facial skin and physical evaluation in 93 Caucasian women with obesity (OB) and non-obesity (NOB). Results In OB, imbalance in metabolism of carbohydrate and lipid, autonomic nerve activity, and secreted factors were confirmed. In the skin properties in OB, surface roughness was higher by 70%, the water content was lower by 12%, and changes in the lipid profile of stratum corneum ceramide were observed; in particular, a 7% reduction of [NP]-type ceramide, compared with NOB. Moreover, significant redness accompanied by a 34% increase in skin blood flow was observed in OB. Correlation analysis elucidated that the water content was strongly correlated with local skin indices, such as the ceramide composition, redness, blood flow, and TNFα in the stratum corneum, whereas roughness was correlated with the systemic indices, such as serum insulin, leptin, and IL-6. Conclusions Characteristics of obesity-associated skin were (A) reduction of the barrier and moisturizing function accompanied by intercellular lipid imbalance, (B) increased redness accompanied by hemodynamic changes, and (C) surface roughness. It was suggested that each symptom is due to different causes in local and/or systemic physiological impairment related to the autonomic nerve-vascular system, inflammation and insulin resistance. Electronic supplementary material The online version of this article (10.1186/s12944-017-0608-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shinobu Mori
- Biological Science Laboratories, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan.
| | - Akiko Shiraishi
- Biological Science Laboratories, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Karen Epplen
- Spring Grove Laboratories, 375 Thomas More Parkway, Suite 112, Crestview Hills, KY, 41017, USA
| | - Desiree Butcher
- Spring Grove Laboratories, 375 Thomas More Parkway, Suite 112, Crestview Hills, KY, 41017, USA
| | - Daiki Murase
- Biological Science Laboratories, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Yuka Yasuda
- Analysis Science Laboratories, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Takatoshi Murase
- Biological Science Laboratories, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
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