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Vashishtha V, Parida A, Amberkar MB, Rao K G M, Y G, Roy A. A preclinical study to determine the anti-epileptic effect of biotin on maximal electroshock (MES) and pentylenetetrazole (PTZ) models in albino rats. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2024; 21:222-229. [PMID: 38661076 DOI: 10.1515/jcim-2024-0021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 03/14/2024] [Indexed: 04/26/2024]
Abstract
OBJECTIVES Vitamin B7(biotin) is not synthesized in our body and is retrieved from some food products like eggs, liver, pork and leafy vegetables and as well as microbes of gut. Deficiency of biotin majorly leads to loss of hair, rashes over skin, lethargy and seizures. It is noted that biotin is an anti-oxidant and negates free radical effects. Biotin is also involved in carbon dioxide metabolism and it might alter seizure threshold. Studies also suggest its effect on lipid metabolism as well. So, the primary objective of this study was to assess the efficacy of biotin in maximal electric shock (MES) induced generalized tonic-clonic seizures (GTCS) and pentylenetetrazole (PTZ) induced absence seizures. The secondary objective is to study the effect of combined treatment of biotin and sodium valproate on seizures as well as plasma lipid profile in rats. METHODS In our study 30 albino Wistar rats each were used in MES and PTZ model respectively. 30 rats were divided equally into following groups: I - distilled water (negative control) II - distilled water (positive control) III - sodium valproate (300 mg/kg) IV - biotin (10 mg/kg/day) V - biotin (10 mg/kg) + sodium valproate (150 mg/kg). RESULTS We observed that the tonic hind limb extension was significantly reduced in the treatment group in MES model. Nitric oxide levels were also seen raised in combination group in MES model and all the treated groups in PTZ model. Biotin treated group showed increased high-density lipoproteins and reduced low density lipoproteins and triglycerides. CONCLUSIONS Biotin had an additive effect to sodium valproate in both the models of epilepsy in rats. Further, it was also able to counteract hyperlipidemia cause by sodium valproate.
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Affiliation(s)
- Vrinda Vashishtha
- Department of Pharmacology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Amrita Parida
- Department of Pharmacology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Mohan Babu Amberkar
- Department of Pharmacology, The Oxford Medical College, Hospital and Research Centre, Bangalore, India
| | - Mohandas Rao K G
- Department of Basic Medical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Geethika Y
- Department of Biochemistry, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Arpita Roy
- Department of Pharmacology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
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Rose L, Novice M, Kobayashi S, Minta A, Novice T, Sicco KL, Dulmage B. Characterization of the role of Facebook groups for patients who use scalp cooling therapy: a survey study. Support Care Cancer 2024; 32:351. [PMID: 38748328 PMCID: PMC11096238 DOI: 10.1007/s00520-024-08534-y] [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: 11/14/2023] [Accepted: 04/29/2024] [Indexed: 05/18/2024]
Abstract
Since the emergence of scalp cooling therapy (SCT) for the prevention of chemotherapy-induced alopecia (CIA), support groups on social media platforms for interested patients have surfaced. Though there are over 20,000 active members across SCT Facebook groups, little is known about how members use this platform. A 23-question survey was posted in five scalp cooling Facebook groups, reaching 219 women. Results indicated that these Facebook groups play clear roles in providing the following: (1) a supportive community for patients, (2) instructions for SCT use, (3) advice regarding insurance coverage and reimbursement, and (4) recommendations for over-the-counter products for hair loss. Despite reported interest in hair loss products, only 5% of patients sought medical treatment from dermatologists. Due to group-specific access restrictions, private Facebook groups provide patients with a protected platform to learn more about SCT from both those with personal experience and SCT company specialists. Providers may consider recommending these online groups to interested patients during the scalp cooling counseling process. As patients with CIA express a growing interest in over-the-counter hair, eyebrow, and eyelash products, it is important for dermatologists to be aware of where their patients obtain recommendations, and further, if these recommendations have clinical evidence of efficacy.
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Affiliation(s)
- Lucy Rose
- The Ohio State University College of Medicine, Columbus, OH, USA.
| | - Madison Novice
- The University of Michigan Medical School, Ann Arbor, MI, USA
| | - Sonja Kobayashi
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - Abena Minta
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - Taylor Novice
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
| | - Kristen Lo Sicco
- Department of Dermatology, NYU Grossman School of Medicine, The Ronald O. Perelman, New York City, NY, USA
| | - Brittany Dulmage
- Department of Dermatology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
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Elston DM. Letter from the editor: First do no harm-biotin for hair and nails. J Am Acad Dermatol 2024:S0190-9622(24)00576-0. [PMID: 38583666 DOI: 10.1016/j.jaad.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Affiliation(s)
- Dirk M Elston
- Department of Dermatology and Dermatologic Surgery, Medical University of South Carolina, Charleston, South Carolina.
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Trehan A, Anand R, Chaudhary G, Garg H, Verma MK. Efficacy and Safety of Skin Radiance Collagen on Skin and Hair Matrix: A Placebo-Controlled Clinical Trial in Healthy Human Subjects. Clin Cosmet Investig Dermatol 2024; 17:581-591. [PMID: 38495912 PMCID: PMC10942009 DOI: 10.2147/ccid.s438642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 01/16/2024] [Indexed: 03/19/2024]
Abstract
Purpose Collagen supplements are rising in the market as collagen has been demonstrated to be an important protein in the human aging process. Also, it is safe and easily absorbed in the body. Hence the aim of this study was to examine the effectiveness and safety of a collagen and antioxidant-rich treatment compared to a placebo in relation to various skin and hair indicators in healthy adult human subjects. Patients and Methods Forty healthy adult non-pregnant/non-lactating women (aged 38-50 years) provided their informed consent in writing before their participation. Skin Radiance Collagen (SRC) treatment and a placebo were assessed for efficacy before application on Day 1, and post-application on Days 28 and 56, to measure changes in skin elasticity, hydration, brightness, pigmentation; texture, wrinkles, dryness, smoothness, fine lines, changes in the crow's feet region; as well as hair strength and hair fall. Results It was observed after 56 days that therapy with SRC, compared to placebo, produced a substantial effect on reduction of wrinkle depth and fine lines by 48.11% and 39%, respectively, with p-value <0.01 in the test group. There was a 15.69% improvement in skin hydration observed and 28% reduction in hair fall with p-value <0.01. Conclusion SRC, a combination of collagen with hyaluronic acid (HA), biotin, and vitamins C and E, showed a significant improvement in skin and hair health, including improvements in skin elasticity, skin hydration, reduction in crow's feet area wrinkles and fine lines, hair fall, and decrease in roughness, leading to improved skin texture. Vitamin C in the formulation also acts as a collagen builder for the body and helps in preventing oxidative stress in the body. The test treatment SRC was found to be efficacious and safe in healthy human adult subjects.
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Affiliation(s)
| | - Rachna Anand
- Bright Lifecare Pvt. Ltd, Gurugram, Haryana, India
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Khan AR, Al-Enazi S, Al-Gahtani A, Al-Zahrani S, Saad SM, Khan KM, Alothaim A. Accurate determination of Biotinidase activity in serum by HPLC and its utilization as second tier test for the confirmation of initial positive newborn screening results. Mol Genet Metab Rep 2024; 38:101045. [PMID: 38221916 PMCID: PMC10787289 DOI: 10.1016/j.ymgmr.2023.101045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/22/2023] [Accepted: 12/22/2023] [Indexed: 01/16/2024] Open
Abstract
Diagnosis of Biotinidase deficiency (BTD) is extremely important to avoid several neurodevelopmental problems in early childhood. Colorimetric and fluorometric methods lack specificity and selectivity due to several interferences resulting in a high number of false positive results. We developed an HPLC method for BTD activity in serum with fluorescent detection. In colorimetric assays, biotinidase attacks the amide linkage of the artificial substrate biotinidyl-4-aminobenzoic acid (B-PABA) and releases p-aminobenzoic acid (PABA), which is converted to a purple dye by diazotization reaction. The newly developed method injects the reaction mixture directly into the HPLC column and quantifies using a six-point calibration curve without coupling and diazotization reaction. The method is linear over the 5-1000 μmol/L range. The detection and quantitation limits were 2.5 μmol/L and 5.0 μmol/L, respectively. When compared with colorimetric assay, the correlation coefficient (R2) was 0.9963. The within-assay and between-assay precision was <10.0% for four levels of quality control samples. No significant variation in BTD activity was detected due to hemolysis, icteric, and lipemic samples. The newly developed method eliminates the potential interference due to the presence of aromatic amines and significantly reduces the false positive results observed with the colorimetric method. It is simple, specific, sensitive, faster in sample preparation, and requires a small sample volume. The newly developed HPLC method was used in our laboratory as a secondary tier test for initial positive BTD samples from newborn screening programs. To our knowledge, no similar HPLC method has been reported to date.
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Affiliation(s)
- Abdul Rafiq Khan
- King Abdul Medical City, Ministry of National Guard and Health Affairs, Department of Pathology and Laboratory Medicine, Biochemical Metabolic Lab, Riyadh, Saudi Arabia
- Department of Chemistry, University of Karachi, Karachi, Pakistan
| | - Souad Al-Enazi
- King Abdul Medical City, Ministry of National Guard and Health Affairs, Department of Pathology and Laboratory Medicine, Biochemical Metabolic Lab, Riyadh, Saudi Arabia
| | - Areej Al-Gahtani
- King Abdul Medical City, Ministry of National Guard and Health Affairs, Department of Pathology and Laboratory Medicine, Biochemical Metabolic Lab, Riyadh, Saudi Arabia
| | - Saleh Al-Zahrani
- King Abdul Medical City, Ministry of National Guard and Health Affairs, Department of Pathology and Laboratory Medicine, Biochemical Metabolic Lab, Riyadh, Saudi Arabia
| | | | - Khalid Mohammed Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Ali Alothaim
- King Abdul Medical City, Ministry of National Guard and Health Affairs, Department of Pathology and Laboratory Medicine, Biochemical Metabolic Lab, Riyadh, Saudi Arabia
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Januszewski J, Forma A, Zembala J, Flieger M, Tyczyńska M, Dring JC, Dudek I, Świątek K, Baj J. Nutritional Supplements for Skin Health-A Review of What Should Be Chosen and Why. MEDICINA (KAUNAS, LITHUANIA) 2023; 60:68. [PMID: 38256329 PMCID: PMC10820017 DOI: 10.3390/medicina60010068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024]
Abstract
Supplementation of micronutrients is considered to be crucial in the reinforcement of the skin's barrier. In this paper, 14 nutritional compounds commonly used in food or pharmaceutic industries were analyzed in terms of influencing skin conditions. The major objective of this paper was to provide a narrative review of the available literature regarding several chosen compounds that are currently widely recommended as supplements that aim to maintain proper and healthy skin conditions. We conducted a review of the literature from PubMed, Scopus, and Web of Science until September 2023 without any other restrictions regarding the year of the publication. Ultimately, we reviewed 238 articles, including them in this review. Each of the reviewed compounds, including vitamin A, vitamin C, vitamin D, vitamin E, curcumin, chlorella, Omega-3, biotin,Ppolypodium leucotomos, Simmondsia chinesis, gamma oryzanol, olive leaf extract, spirulina, and astaxanthin, was observed to present some possible effects with promising benefits for a skin condition, i.e., photoprotective radiation. Adding them to the diet or daily routine might have a positive influence on some skin inflammatory diseases such as atopic dermatitis or psoriasis. Further, UV radiation protection facilitated by some supplements and their impact on human cells might be helpful during chemotherapy or in preventing melanoma development. Further research is needed because of the lack of clear consensus regarding the doses of the described compounds that could provide desirable effects on the skin.
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Affiliation(s)
- Jacek Januszewski
- Chair and Department of Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (J.J.); (M.T.); (J.C.D.); (K.Ś.)
| | - Alicja Forma
- Department of Forensic Medicine, Medical University of Lublin, ul. Jaczewskiego 8b, 20-090 Lublin, Poland; (M.F.); (I.D.)
| | - Julita Zembala
- University Clinical Center, Medical University of Warsaw, Lindleya 4, 02-004 Warsaw, Poland;
| | - Michał Flieger
- Department of Forensic Medicine, Medical University of Lublin, ul. Jaczewskiego 8b, 20-090 Lublin, Poland; (M.F.); (I.D.)
| | - Magdalena Tyczyńska
- Chair and Department of Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (J.J.); (M.T.); (J.C.D.); (K.Ś.)
| | - James Curtis Dring
- Chair and Department of Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (J.J.); (M.T.); (J.C.D.); (K.Ś.)
| | - Iga Dudek
- Department of Forensic Medicine, Medical University of Lublin, ul. Jaczewskiego 8b, 20-090 Lublin, Poland; (M.F.); (I.D.)
| | - Kamila Świątek
- Chair and Department of Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (J.J.); (M.T.); (J.C.D.); (K.Ś.)
| | - Jacek Baj
- Chair and Department of Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (J.J.); (M.T.); (J.C.D.); (K.Ś.)
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Watanabe K, Yamada A, Nakayama S, Kadokura T, Sakai K, Tashiro Y. Distribution of bacterial community structures on human scalp hair shaft in relation to scalp sites. Biosci Biotechnol Biochem 2023; 87:1551-1558. [PMID: 37667514 DOI: 10.1093/bbb/zbad127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 08/22/2023] [Indexed: 09/06/2023]
Abstract
Bacterial community structure on the human skin is specific to each individual and varies among different body sites. In this study, we investigated differences in bacterial community structure among 5 hair sampling sites and among 12 individuals. Significant differences were found between individuals in terms of alpha diversity and relative abundance of major bacterial phyla and genera, whereas no differences were found between hair sampling sites. The principal coordinate analysis plots of within-individual group tended to converge individually, whereas those of within-hair sampling site group did not cluster. In addition, weighted UniFrac analysis showed that the individual-based category was a statistically significant category but not the scalp hair sampling site-based category. These results suggest that the distribution of bacterial community structures on scalp hair shafts within individuals was relatively steady, even when the scalp hair sampling site was different.
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Affiliation(s)
- Kota Watanabe
- Laboratory of Fermentation Microbiology, Department of Fermentation Science and Texhnology, Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | - Azusa Yamada
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Shunichi Nakayama
- Laboratory of Fermentation Microbiology, Department of Fermentation Science and Texhnology, Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | - Toshimori Kadokura
- Laboratory of Fermentation Microbiology, Department of Fermentation Science and Texhnology, Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
- Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
- Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
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Balzer AHA, Whitehurst CB. An Analysis of the Biotin-(Strept)avidin System in Immunoassays: Interference and Mitigation Strategies. Curr Issues Mol Biol 2023; 45:8733-8754. [PMID: 37998726 PMCID: PMC10670868 DOI: 10.3390/cimb45110549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/25/2023] Open
Abstract
An immunoassay is an analytical test method in which analyte quantitation is based on signal responses generated as a consequence of an antibody-antigen interaction. They are the method of choice for the measurement of a large panel of diagnostic markers. Not only are they fully automated, allowing for a short turnaround time and high throughput, but offer high sensitivity and specificity with low limits of detection for a wide range of analytes. Many immunoassay manufacturers exploit the extremely high affinity of biotin for streptavidin in their assay design architectures as a means to immobilize and detect analytes of interest. The biotin-(strept)avidin system is, however, vulnerable to interference with high levels of supplemental biotin that may cause elevated or suppressed test results. Since this system is heavily applied in clinical diagnostics, biotin interference has become a serious concern, prompting the FDA to issue a safety report alerting healthcare workers and the public about the potential harm of ingesting high levels of supplemental biotin contributing toward erroneous diagnostic test results. This review includes a general background and historical prospective of immunoassays with a focus on the biotin-streptavidin system, interferences within the system, and what mitigations are applied to minimize false diagnostic results.
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Affiliation(s)
- Amy H. A. Balzer
- Department of Pathology, Microbiology, and Immunology, New York Medical College, Basic Medical Science Building, 15 Dana Rd., Valhalla, NY 10595, USA
| | - Christopher B. Whitehurst
- Department of Pathology, Microbiology, and Immunology, New York Medical College, Basic Medical Science Building, 15 Dana Rd., Valhalla, NY 10595, USA
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Cohen B, Cadesky A, Jaggi S. Dermatologic manifestations of thyroid disease: a literature review. Front Endocrinol (Lausanne) 2023; 14:1167890. [PMID: 37251685 PMCID: PMC10214500 DOI: 10.3389/fendo.2023.1167890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/07/2023] [Indexed: 05/31/2023] Open
Abstract
Introduction Thyroid hormone is considered one of the key regulatory hormones for skin homeostasis. Multiple organs are affected by the release of peripheral thyroid hormones (T4 and T3) further regulating various functions at a cellular level. Specifically, skin is considered an important target organ in which the thyroid hormone has a significant impact. Multiple skin diseases are associated with thyroid hormone dysregulation. However, other striking dermatologic manifestations are seen in nails and hair as well. Hypothyroidism, hyperthyroidism, and thyroid cancer can have an array of cutaneous manifestations, and we present the recent updates in this field. Methods A PubMed search was performed for updates in any new skin disease findings and treatments between 2010 and 2022. Research published in the past decade and previously known foundational skin findings associated with thyroid disease were presented in this review. Conclusion Cutaneous manifestations of thyroid disease is one of the first notable signs of thyroid hormone dysregulation. This article reviews the recent updates on the thyroid and skin interplay, and it further discusses overt visible findings and various available treatment modalities.
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Tr P, Ts R, K SK, Prasanna H. A Comparative Study of Topical Procapil With Platelet-Rich Plasma Therapy Versus Topical Redensyl, Saw Palmetto, and Biotin With Platelet-Rich Plasma Therapy in the Treatment of Androgenetic Alopecia. Cureus 2023; 15:e38696. [PMID: 37292551 PMCID: PMC10246929 DOI: 10.7759/cureus.38696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/08/2023] [Indexed: 06/10/2023] Open
Abstract
Background and aim Androgenetic alopecia (AGA) is a well-known hair loss disorder in both men and women affecting approximately 80% and 50% of the population, respectively. Various treatment options for AGA are available with varying efficacy. Combination therapy is a new dictum to combat AGA. Hence, this study aimed to compare the efficacy of commonly used topical therapies such as Procapil with platelet-rich plasma (PRP) and redensyl, saw palmetto (SP), and biotin (RSB) with PRP. Materials and methods This was a randomized controlled trial conducted on 54 male patients with AGA attending the outpatient department in a tertiary care hospital. Participants were randomly assigned into two equal groups (A and B). Group A participants were treated with Procapil with PRP, and group B participants were treated with redensyl, saw palmetto, and biotin with PRP at three weeks intervals for a total period of four sessions. Clinical improvement was assessed by serial hair photography by a third blinded observer and was recorded. Results A total of 54 individuals were included and were distributed into 27 each in group A and group B. AGA grading score was found significant between the groups with P < 0.05. Conclusion PRP with adjuvants redensyl, saw palmetto, and biotin can be a better alternative to the current therapies of PRP.
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Affiliation(s)
- Pavithra Tr
- Dermatology, Venereology, and Leprosy, Sri Devaraj Urs Academy of Higher Education and Research, Kolar, IND
| | - Rajashekar Ts
- Dermatology, Venereology, and Leprosy, Sri Devaraj Urs Academy of Higher Education and Research, Kolar, IND
| | - Suresh Kumar K
- Dermatology, Sri Devaraj Urs Academy of Higher Education and Research, Kolar, IND
| | - Harish Prasanna
- Dermatology, Venereology, and Leprosy, Sri Devaraj Urs Academy of Higher Education and Research, Kolar, IND
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Silver PJ, Coles MJ, Heath CR, Parkman HP. Hair Loss in Patients with Gastroparesis: A Sign of Nutritional Deficiency in Gastroparesis? Dig Dis Sci 2023; 68:1397-1402. [PMID: 36853546 DOI: 10.1007/s10620-022-07803-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 12/16/2022] [Indexed: 03/01/2023]
Abstract
INTRODUCTION Some patients with gastroparesis (Gp) report hair loss. The aim of this study was to investigate the prevalence of patient-reported hair loss in Gp patients, analyze hair loss association to severity of Gp and nutritional deficiencies, and study effects of multivitamin treatment on hair loss. METHODS Patients with Gp were questioned about hair characteristics, Gp symptoms, and diet. Patients with hair loss had blood drawn for vitamin levels. Patients with hair loss were treated with daily multivitamin and assessed 8 weeks later. RESULTS Hair loss was reported in 65 of 143 patients with Gp (45.5%), occurring similarly in idiopathic and diabetic Gp. Hair loss was most commonly noticed while washing and/or combing hair. Patients with hair loss had more severe nausea, abdominal pain, stomach fullness, loss of appetite, abdominal discomfort, bloating, retching, stomach distension, vomiting, early satiety, postprandial fullness, and constipation. Hair loss patients lost more weight over prior 6 months. Patients with hair loss had similar gastric retention on gastric emptying scintigraphy. Overall, 29 of 61 (47.5%) patients with hair loss had at least one abnormal bloodwork result. After 8 weeks of treatment with a daily multivitamin, 17 of 41 (41%) patients had improvement in hair loss. CONCLUSION Hair loss occurred in 46% of patients with Gp, being associated with more severe symptoms, loss of weight, and several vitamin deficiencies, although not a specific one. Treatment with multivitamins improved hair loss in 40% of patients. Presence of hair loss in patients with Gp should prompt nutritional evaluation and supplementation.
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Affiliation(s)
- Paul J Silver
- Section of Gastroenterology, Department of Medicine, Temple University School of Medicine, Philadelphia, PA, USA
| | - Michael J Coles
- Section of Gastroenterology, Department of Medicine, Temple University School of Medicine, Philadelphia, PA, USA
| | - Candrice R Heath
- Department of Dermatology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Henry P Parkman
- Section of Gastroenterology, Department of Medicine, Temple University School of Medicine, Philadelphia, PA, USA. .,Gastroenterology Section, Temple University School of Medicine, Parkinson Pavilion, 8th floor, Philadelphia, PA, 19140, USA.
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Demir B, Cicek D, Orhan C, Er B, Erten F, Tuzcu M, Ozercan IH, Sahin N, Komorowski J, Ojalvo SP, Sylla S, Sahin K. Effects of a Combination of Arginine Silicate Inositol Complex and a Novel Form of Biotin on Hair and Nail Growth in a Rodent Model. Biol Trace Elem Res 2023; 201:751-765. [PMID: 35226275 PMCID: PMC8883010 DOI: 10.1007/s12011-022-03176-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/21/2022] [Indexed: 01/21/2023]
Abstract
The purpose of this study was to examine the effects of a combination of inositol-stabilized arginine silicate complex (ASI) and magnesium biotinate (MgB) on hair and nail growth in an animal model. Twenty-eight female Sprague-Dawley rats (8 weeks old) were randomized into one of the following groups: (i) group (control), shaved; (ii) group (ASI), shaved + ASI (4.14 mg/rat/day); (iii) group (ASI + MgB I), shaved + ASI (4.14 mg/rat/day) + MgB (48.7 μg/rat/day); and (iv) group (ASI + MgB II), shaved + ASI (4.14 mg/rat/day) + MgB (325 μg/rat/day). On day 42, compared with the control group, while hair density (p < 0.05, p < 0.01, and p < 0.0001, respectively) and anagen ratio (p < 0.01, p < 0.01, and p < 0.001) increased in the ASI, ASI + MgB I, and ASI + MgB II groups, telogen ratio decreased (p < 0.01, p < 0.01, and p < 0.001, respectively). In the molecular analysis, VEGF, HGF, and KGF-2 increased in the ASI (p < 0.01, p < 0.01, and p < 0.05, respectively), ASI + MgB I (p < 0.0001 for all), and ASI + MgB II (p < 0.0001 for all) groups when compared to the control group. FGF-2 (p < 0.01) and IGF-1 (p < 0.001) were found to be increased in the ASI + MgB I and ASI + MgB II groups. SIRT-1 and β-catenin increased in the ASI (p < 0.05 and p < 0.01), ASI + MgB I (p < 0.001 for both), and ASI + MgB II (p < 0.0001 for both) groups. Wnt-1 increased in the ASI + MgB I (p < 0.001) and ASI + MgB II (p < 0.0001) groups. In conclusion, the combination of ASI and MgB could promote hair growth by regulating IGF-1, FGF, KGF, HGF, VEGF, SIRT-1, Wnt, and β-catenin signal pathways. It was also established that ASI did not affect nail growth, whereas the MgB combination was effective using a higher dose of biotin.
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Affiliation(s)
- Betul Demir
- Department of Dermatology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Demet Cicek
- Department of Dermatology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Cemal Orhan
- Department of Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - Besir Er
- Department of Biology, Faculty of Science, Firat University, Elazig, Turkey
| | - Fusun Erten
- Department of Veterinary Science, Pertek Sakine Genc Vocational School, Munzur University, Tunceli, Turkey
| | - Mehmet Tuzcu
- Department of Biology, Faculty of Science, Firat University, Elazig, Turkey
| | | | - Nurhan Sahin
- Department of Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - James Komorowski
- Research and Development, JDS Therapeutics, LLC, Harrison, NY 10577 USA
| | - Sara Perez Ojalvo
- Research and Development, JDS Therapeutics, LLC, Harrison, NY 10577 USA
| | - Sarah Sylla
- Research and Development, JDS Therapeutics, LLC, Harrison, NY 10577 USA
| | - Kazim Sahin
- Department of Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
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13
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Integrative and Mechanistic Approach to the Hair Growth Cycle and Hair Loss. J Clin Med 2023; 12:jcm12030893. [PMID: 36769541 PMCID: PMC9917549 DOI: 10.3390/jcm12030893] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 01/16/2023] [Accepted: 01/20/2023] [Indexed: 01/24/2023] Open
Abstract
The hair cycle is composed of four primary phases: anagen, catagen, telogen, and exogen. Anagen is a highly mitotic phase characterized by the production of a hair shaft from the hair follicle, whereas catagen and telogen describe regression and the resting phase of the follicle, respectively, ultimately resulting in hair shedding. While 9% of hair follicles reside in telogen at any time, a variety of factors promote anagen to telogen transition, including inflammation, hormones, stress, nutritional deficiency, poor sleep quality, and cellular division inhibiting medication. Conversely, increased blood flow, direct stimulation of the hair follicle, and growth factors promote telogen to anagen transition and subsequent hair growth. This review seeks to comprehensively describe the hair cycle, anagen and telogen balance, factors that promote anagen to telogen transition and vice versa, and the clinical utility of a variety of lab testing and evaluations. Ultimately, a variety of factors impact the hair cycle, necessitating a holistic approach to hair loss.
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14
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Dasgupta A, Yeo KTJ. Biotin Interference in Immunoassays and Patient Safety. Am J Clin Pathol 2023; 159:1-2. [PMID: 36409746 DOI: 10.1093/ajcp/aqac140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Amitava Dasgupta
- Department of Pathology and Laboratory Medicine, University of Kansas City, Kansas City, KS, USA
| | - Kiang-Teck Jerry Yeo
- Department of Pathology.,Pritzker School of Medicine, University of Chicago, Chicago, IL, USA
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15
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Wan Z, Zheng J, Zhu Z, Sang L, Zhu J, Luo S, Zhao Y, Wang R, Zhang Y, Hao K, Chen L, Du J, Kan J, He H. Intermediate role of gut microbiota in vitamin B nutrition and its influences on human health. Front Nutr 2022; 9:1031502. [PMID: 36583209 PMCID: PMC9792504 DOI: 10.3389/fnut.2022.1031502] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022] Open
Abstract
Vitamin B consists of a group of water-soluble micronutrients that are mainly derived from the daily diet. They serve as cofactors, mediating multiple metabolic pathways in humans. As an integrated part of human health, gut microbiota could produce, consume, and even compete for vitamin B with the host. The interplay between gut microbiota and the host might be a crucial factor affecting the absorbing processes of vitamin B. On the other hand, vitamin B supplementation or deficiency might impact the growth of specific bacteria, resulting in changes in the composition and function of gut microbiota. Together, the interplay between vitamin B and gut microbiota might systemically contribute to human health. In this review, we summarized the interactions between vitamin B and gut microbiota and tried to reveal the underlying mechanism so that we can have a better understanding of its role in human health.
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Affiliation(s)
- Zhijie Wan
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | | | | | - Lan Sang
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Jinwei Zhu
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Shizheng Luo
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Yixin Zhao
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Ruirui Wang
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Yicui Zhang
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Kun Hao
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | - Liang Chen
- Nutrilite Health Institute, Shanghai, China
| | - Jun Du
- Nutrilite Health Institute, Shanghai, China
| | - Juntao Kan
- Nutrilite Health Institute, Shanghai, China,*Correspondence: Juntao Kan,
| | - Hua He
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China,Hua He,
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16
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Jung DR, Yoo HY, Kim MJ, Singh V, Park SH, Jeong M, Park BJ, Shin JH. Comparative analysis of scalp and gut microbiome in androgenetic alopecia: A Korean cross-sectional study. Front Microbiol 2022; 13:1076242. [PMID: 36578576 PMCID: PMC9791053 DOI: 10.3389/fmicb.2022.1076242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/21/2022] [Indexed: 12/14/2022] Open
Abstract
Androgenetic alopecia (AGA) is a non-scarring and progressive form of hair loss occurring in both men and women. Although genetic predisposition and sex steroid hormones are the main causes, many factors remain unknown, and various extrinsic factors can negatively affect the lifespan of hair. We investigated skin-gut axis microorganisms as potential exogenous factors causing AGA, through comparative analyses of the scalp and gut microbiome in individuals with and without AGA in a Korean cohort. Using 16S rRNA gene sequencing, we characterized the scalp and gut microbiomes of 141 individuals divided into groups by sex and presence of AGA. Alpha diversity indices in the scalp microbiome were generally higher in individuals with AGA than in healthy controls. These indices showed a strong negative correlation with scalp-inhabitant bacteria (Cutibacterium and Staphylococcus), indicating that the appearance of non-inhabitant bacteria increases as hair loss progresses. No significant differences in diversity were observed between the gut microbiomes. However, bacterial functional differences, such as bile acid synthesis and bacterial invasion of epithelial cells, which are related to intestinal homeostasis, were observed. The networks of the scalp and gut microbiome were more complex and denser with higher values of the network topology statistic coefficient values (i.e., transitivity, density, and degree centrality) and more unique associations in individuals with AGA than in healthy controls. Our findings reveal a link between skin-gut microorganisms and AGA, indicating the former's potential involvement in the latter's development. Additionally, these results provide evidence for the development of cosmetics and therapeutics using microorganisms and metabolites involved in AGA.
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Affiliation(s)
- Da-Ryung Jung
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Hye-Young Yoo
- Skin and Natural Products Lab, Kolmar Korea Co., Ltd., Seoul, South Korea
| | - Min-Ji Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Vineet Singh
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Sung-Ha Park
- Skin and Natural Products Lab, Kolmar Korea Co., Ltd., Seoul, South Korea
| | - Minsoo Jeong
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Byoung-Jun Park
- Skin and Natural Products Lab, Kolmar Korea Co., Ltd., Seoul, South Korea,*Correspondence: Byoung-Jun Park,
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea,Department of Integrative Biotechnology, Kyungpook National University, Daegu, South Korea,NGS Core Facility, Kyungpook National University, Daegu, South Korea,Jae-Ho Shin,
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17
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Samadi A, Ketabi Y, Firooz R, Firooz A. Efficacy of intramuscular injections of biotin and dexpanthenol in the treatment of diffuse hair loss: A randomized, double‐blind controlled study comparing two brands. Dermatol Ther 2022; 35:e15695. [DOI: 10.1111/dth.15695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/11/2022] [Accepted: 07/01/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Aniseh Samadi
- Center for Research & Training in Skin Diseases & Leprosy Tehran University of Medical Sciences Tehran Iran
| | - Yasaman Ketabi
- Shahid Beheshti University of Medical Science Tehran Iran
| | - Rojin Firooz
- Center for Research & Training in Skin Diseases & Leprosy Tehran University of Medical Sciences Tehran Iran
| | - Alireza Firooz
- Center for Research & Training in Skin Diseases & Leprosy Tehran University of Medical Sciences Tehran Iran
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18
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Popescu MN, Berteanu M, Beiu C, Popa LG, Mihai MM, Iliescu MG, Stănescu AMA, Ionescu AM. Complementary Strategies to Promote Hair Regrowth in Post-COVID-19 Telogen Effluvium. CLINICAL, COSMETIC AND INVESTIGATIONAL DERMATOLOGY 2022; 15:735-743. [PMID: 35497690 PMCID: PMC9042074 DOI: 10.2147/ccid.s359052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/31/2022] [Indexed: 01/13/2023]
Abstract
Post-COVID-19 telogen effluvium has been largely reported as a sequela in the post-acute phase of COVID-19, causing major emotional distress among the affected patients. The affected individuals are further exposed to a vast amount of misinformation from the internet and social media and it is important for physicians to be familiar with the phenomenon and provide appropriate counselling to their patients regarding this condition. This article aims to review the evidence-based complementary strategies that can help enhance hair regrowth after post-COVID-19 hair loss, from psychological support and patient education to the importance of optimal nutrition and potential indications and benefits of oral nutritional supplementation, as well as the role of both topical and injectable hair growth stimulators.
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Affiliation(s)
- Marius Nicolae Popescu
- Department of Physical and Rehabilitation Medicine-Elias Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - Mihai Berteanu
- Department of Physical and Rehabilitation Medicine-Elias Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - Cristina Beiu
- Department of Oncologic Dermatology-Elias Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - Liliana Gabriela Popa
- Department of Oncologic Dermatology-Elias Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - Mara Mădălina Mihai
- Department of Oncologic Dermatology-Elias Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | | | | | - Anca Mirela Ionescu
- Department of Physical and Rehabilitation Medicine, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
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19
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Cheng T, Cao J, Wu T, Jiang X, Yarmolenko MA, Rogachev AA, Rogachev AV. Study on osteoinductive activity of biotin film by low-energy electron beam deposition. BIOMATERIALS ADVANCES 2022; 135:212730. [PMID: 35929224 DOI: 10.1016/j.bioadv.2022.212730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 01/29/2022] [Accepted: 02/20/2022] [Indexed: 06/15/2023]
Abstract
Biotin film was prepared by low-energy electron beam deposition (LEBD). The molecular structure, chemical composition and micromorphology of the biotin film were investigated by 1HNMR, FTIR, XPS, AFM and SEM. The results showed the molecular structure of a monolayer of biotin film is fully consistent with the molecular structure of the initial biotin powders. The contact angle test showed that the biotin film exhibit good hydrophilicity. The release kinetics of biotin film was tested by UV-Vis method. It was found that the film was almost completely released in about two weeks. The cell viability of MC3T3-E1 cells on the surface of the biotin film was attaining 100.54 ± 1.7% (P < 0.05), showing excellent biocompatibility and biosafety. Titanium implant with surface of biotin film was implanted into the femoral head of rabbits as experimental group. The animals were euthanized after four weeks. Compared with the control group, mature lamellar bone formation was observed with dense trabecular bone, and the expression of Coll-I, Runx2 and BMP-2 was better. The results showed that the repair effect of bone defect in the experimental group was excellent.
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Affiliation(s)
- Tongfei Cheng
- Nanjing University of Science and Technology, 200, Xiaolingwei Street, Nanjing 210094, China
| | - Jinxing Cao
- Nanjing University of Science and Technology, 200, Xiaolingwei Street, Nanjing 210094, China
| | - Tiantian Wu
- Nanjing University of Science and Technology, 200, Xiaolingwei Street, Nanjing 210094, China
| | - Xiaohong Jiang
- Nanjing University of Science and Technology, 200, Xiaolingwei Street, Nanjing 210094, China.
| | - M A Yarmolenko
- Francisk Skorina Gomel State University, 104, Sovetskaya Street, Gomel 246019, Belarus
| | - A A Rogachev
- Francisk Skorina Gomel State University, 104, Sovetskaya Street, Gomel 246019, Belarus
| | - A V Rogachev
- Francisk Skorina Gomel State University, 104, Sovetskaya Street, Gomel 246019, Belarus
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20
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Tang Z, Hu Y, Wang J, Fan Z, Qu Q, Miao Y. Current application of mesotherapy in pattern hair loss: A systematic review. J Cosmet Dermatol 2022; 21:4184-4193. [PMID: 35253335 DOI: 10.1111/jocd.14900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 01/11/2022] [Accepted: 03/01/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Ziyuan Tang
- Department of Plastic and Aesthetic Surgery Nan Fang Hospital of Southern Medical University Guangzhou Guangdong Province 510515 China
| | - Yiming Hu
- Beijing Institute of Technology Zhuhai Guangdong Province 519000 China
- Pace University New York NY10024 USA
| | - Jin Wang
- Department of Plastic and Aesthetic Surgery Nan Fang Hospital of Southern Medical University Guangzhou Guangdong Province 510515 China
| | - Zhexiang Fan
- Department of Plastic and Aesthetic Surgery Nan Fang Hospital of Southern Medical University Guangzhou Guangdong Province 510515 China
| | - Qian Qu
- Department of Plastic and Aesthetic Surgery Nan Fang Hospital of Southern Medical University Guangzhou Guangdong Province 510515 China
| | - Yong Miao
- Department of Plastic and Aesthetic Surgery Nan Fang Hospital of Southern Medical University Guangzhou Guangdong Province 510515 China
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21
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Moerman A, Delanghe JR. Sense and nonsense concerning biotin interference in laboratory tests. Acta Clin Belg 2022; 77:204-210. [PMID: 32567529 DOI: 10.1080/17843286.2020.1780770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Biotin supplementation (mainly OTC preparations) has gained popularity. There are concerns about biotin interference in immunoassays and potential misdiagnosis, especially since the discovery of high dose therapy in MS. This review summarizes the dangers of biotin usage and possible countermeasures. METHODS Immunoassays design determines whether positive or negative analytical errors may occur. Techniques using biotinylated reagent and biotin binding proteins may generate errors. In sandwich immunoassays, biotin causes lowered results. Competitive immunoassays are more vulnerable: biotin usage causes false increased results. The interference is platform dependent. Parameters vary in their susceptibility: a combination of false positives and negatives mimicking a coherent profile is dangerous, e.g. combining falsely lowered TSH with falsely elevated FT4/FT3 mimicking hyperthyreosis. Other susceptible parameters are thyroglobulin, DHEA-S, estradiol, testosterone, ferritin, progesterone, Vitamin D, Vitamin B12, PSA, PTH, LH, FSH, Troponins I and T, Pro-BNP. Digoxin and PSA may also be affected. Tumor markers and ß-hCG are robust. Inserts of serological markers of HIV, hepatitis B and C warn for biotin interference. RESULTS Manufacturers have made assays less vulnerable for biotin interference. In doubtful cases, it is helpful to determine testosterone in females and estrogen in males. Both are elevated if biotin interference is present. Biotin supplementation should be discontinued. However, this is impossible in MS patients needing biotin, as interrupting this medication is discouraged. CONCLUSIONS Solutions to overcome this interference are: informing patients prior to analysis (avoiding peak biotin values when sampling), choice of appropriate immunoassays, and use of biotin removing steps prior to analysis.
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22
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Dasgupta A. Immunoassay design and biotin interference. Adv Clin Chem 2022; 109:165-183. [DOI: 10.1016/bs.acc.2022.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Abstract
The nail is a specialized keratinous skin appendage that is often overlooked, even though nail disorders comprise approximately 10% of all dermatologic conditions. We provide an overview on the basic anatomy of the nail and function of each structure. We examine the chemical profile, including the keratin and mineral composition, of the nail plate. Subsequently, nail manifestations are reviewed, as virtually every nutritional deficiency can affect nail growth in some manner. We focus on how each nutritional deficiency can affect the different anatomic structures of the nail unit. The terminology and the differential diagnoses of the many different nail plate and nail bed abnormalities are reviewed. Finally, we focus on the evidence behind nutrition-based treatments in the setting of several nail disorders.
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Affiliation(s)
- Suraj Muddasani
- University of Cininnati College of Medicine, University of Cincinnati School of Medicine, Cincinnati, Ohio, USA
| | - Gloria Lin
- Department of Dermatology, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - Jette Hooper
- Department of Dermatology, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - Steven Brett Sloan
- Department of Dermatology, University of Connecticut School of Medicine, Farmington, Connecticut, USA; VA Connecticut Healthcare System, Newington, Connecticut, USA.
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24
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Abstract
Healthy hair results from a combination of good generalized health and mindful health care practices. Many nutritional deficiencies lead to poor hair health and include changes to hair structure, texture, and viability. Although the mechanisms by which individual nutrients contribute to hair growth and maintenance have yet to be fully resolved, there are a variety of risk factors that predispose an individual to a nutritional deficiency; age, malnutrition, malabsorption, and medication use are among the most common. A thorough history should be taken in a patient with a hair disturbance to identify risk factors for a nutritional deficiency, which will then guide directed laboratory testing and treatment.
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Affiliation(s)
- Kelly O'Connor
- Department of Dermatology, Boston University Medical Center, Boston, Massachusetts, USA. kelly.o'
| | - Lynne J Goldberg
- Department of Dermatology, Boston University Medical Center, Boston, Massachusetts, USA
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25
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Abstract
Vitamin and mineral supplement consumption is widespread. They are taken for a variety of conditions, including dermatologic disorders. Although consumers often assume these supplements are safe, excessive consumption of supplements may have deleterious effects. Such vitamin supplements include vitamin A, niacin, biotin, vitamin D, and vitamin E, and specific mineral supplements include zinc, copper, and iron. These supplements may have a number of potential adverse effects.
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Affiliation(s)
- Freidrich Anselmo
- Department of Dermatology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Marcia S Driscoll
- Department of Dermatology, University of Maryland School of Medicine, Baltimore, Maryland, USA.
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26
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Travica N, Ried K, Hudson I, Scholey A, Pipingas A, Sali A. The effects of cardiovascular and orthopaedic surgery on vitamin concentrations: a narrative review of the literature and mechanisms of action. Crit Rev Food Sci Nutr 2021:1-31. [PMID: 34619992 DOI: 10.1080/10408398.2021.1983762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Given the rise in worldwide chronic diseases, supplemented by an aging population, the volume of global major surgeries, encompassing cardiac and orthopedic procedures is anticipated to surge significantly. Surgical trauma can be accompanied by numerous postoperative complications and metabolic changes. The present review summarized the results from studies assessing the effects of orthopedic and cardiovascular surgery on vitamin concentrations, in addition to exploring the possible mechanisms associated with changes in concentrations. Studies have revealed a potentially severe depletion in plasma/serum concentrations of numerous vitamins following these surgeries acutely. Vitamins C, D and B1 appear particularly vulnerable to significant depletions, with vitamin C and D depletions consistently transpiring into inadequate and deficient concentrations, respectively. The possible multifactorial mechanisms impacting postoperative vitamin concentrations include changes in hemodilution and vitamin utilization, redistribution, circulatory transport and absorption. For a majority of vitamins, there has been a lack of investigation into the effects of both, cardiac and orthopedic surgery. Additionally, studies were predominantly restricted to short-term postoperative investigations, primarily performed within the first postoperative week of surgery. Overall, results indicated that further examination is necessary to determine the severity and clinical significance of the possible depletions in vitamin concentrations that ensue cardiovascular and orthopedic surgery.
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Affiliation(s)
- Nikolaj Travica
- Food & Mood Centre, School of Medicine, Barwon Health, Deakin University, the Institute for Mental and Physical Health and Clinical Translation (IMPACT), Geelong, Australia.,Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia.,The National Institute of Integrative Medicine, Melbourne, Australia
| | - Karin Ried
- The National Institute of Integrative Medicine, Melbourne, Australia.,Honorary Associate Professor, Discipline of General Practice, University of Adelaide, South Australia, Australia.,Torrens University, Melbourne, Australia
| | - Irene Hudson
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia.,Digital Health, CRC, College of STEM, Mathematical Sciences, Royal Melbourne Institute of Technology (RMIT), Melbourne, Australia.,School of Mathematical and Physical Science, University of Newcastle, Newcastle, Australia
| | - Andrew Scholey
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia
| | - Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia
| | - Avni Sali
- The National Institute of Integrative Medicine, Melbourne, Australia
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27
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Starace M, Gurioli C, Carpanese MA, Bruni F, Piraccini BM, Patrizi A, Alessandrini A. Short anagen syndrome: A case series and algorithm for diagnosis. Pediatr Dermatol 2021; 38:1157-1161. [PMID: 34409646 DOI: 10.1111/pde.14750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 07/13/2021] [Accepted: 07/25/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND The short anagen syndrome (SAS) is a rare idiopathic pediatric disorder characterized by the short duration of the anagen phase. SAS mainly affects Caucasian children. Parents complain of their child's inability to grow long hair. Topical minoxidil may be an effective treatment for SAS; however, a slow spontaneous improvement is typical. OBJECTIVE Our aim was to collect data on out cases of SAS and create an algorithm to facilitate diagnosis of SAS. METHODS A retrospective review of 25 patients with SAS was performed within the Dermatology Department of the University of Bologna. We collected data regarding symptoms, pull test, hair card test, trichoscopy, trichogram, treatments, including biotin and minoxidil, and clinical outcome. RESULTS Characteristic findings included parental reporting that the hair had not required a haircut, hair card test showing hairs with conical-shaped tips, and hair shafts of different diameters, with more 10%-20% of hair shafts less than 60 μm thick on trichoscopy. Trichogram revealed an increased percentage of telogen hair with normal hair shafts and tapering ends. The mean anagen-to-telogen ratio was 66:34 (normal ratio 90:10). CONCLUSION We developed an algorithm to facilitate the diagnosis of this rare hair disease using clinical examination and invasive and non-invasive testing to differentiate SAS from other forms of pediatric alopecia. In conclusion, the collected data of the therapy showed that biotin alone or in combination with topical minoxidil is an effective treatment for SAS.
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Affiliation(s)
- Michela Starace
- Dermatology -IRCCS Policlinico di Sant'Orsola - Department of Experimental, Diagnostic and Specialty Medicine (DIMES) Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Carlotta Gurioli
- Dermatology -IRCCS Policlinico di Sant'Orsola - Department of Experimental, Diagnostic and Specialty Medicine (DIMES) Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Miriam Anna Carpanese
- Dermatology -IRCCS Policlinico di Sant'Orsola - Department of Experimental, Diagnostic and Specialty Medicine (DIMES) Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Francesca Bruni
- Dermatology -IRCCS Policlinico di Sant'Orsola - Department of Experimental, Diagnostic and Specialty Medicine (DIMES) Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Bianca Maria Piraccini
- Dermatology -IRCCS Policlinico di Sant'Orsola - Department of Experimental, Diagnostic and Specialty Medicine (DIMES) Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Annalisa Patrizi
- Dermatology -IRCCS Policlinico di Sant'Orsola - Department of Experimental, Diagnostic and Specialty Medicine (DIMES) Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Aurora Alessandrini
- Dermatology -IRCCS Policlinico di Sant'Orsola - Department of Experimental, Diagnostic and Specialty Medicine (DIMES) Alma Mater Studiorum University of Bologna, Bologna, Italy
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Sulforaphane, L-Menthol, and Dexpanthenol as a Novel Active Cosmetic Ingredient Composition for Relieving Hair Loss Symptoms. COSMETICS 2021. [DOI: 10.3390/cosmetics8030063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Sulforaphane increases the expression of the dihydrotestosterone (DHT)-degrading enzyme, 3α-hydroxysteroid dehydrogenase (3α-HSD) in the liver, which accelerates DHT degradation, thereby inhibiting hair loss in the animal model. In this study, we elucidated its underlying mechanism and demonstrated that sulforaphane has hair loss inhibitory functions in RAW264.7 macrophage cells and Hepa1c1c7 cells at the cellular and gene levels. The gene expression level of an isoform of 3α-HSD, Akr1c2, increased in a dose-dependent manner when these cells were treated with sulforaphane, but there were no significant differences at the gene levels of Akr1c2 and Dhrs9 for the negative control mixture of biotin, dexpanthenol, and L-menthol. These studies indicated that sulforaphane is involved in regulating the gene expression of Akr1c2. To further determine whether this hair product has effects on alleviating hair loss symptoms, clinical trials were also conducted for 18 weeks. We performed a visual evaluation of the parietal and frontal lines of 23 patients before and after using the product, and then calculated the total number of hairs. This clinical study showed that the parietal lines and bangs visually improved and the number of hairs increased by 6.71% from before using the test product to 18 weeks after using the test product. Taken together, these cellular and clinical studies strongly suggest that sulforaphane may be an active ingredient that significantly alleviates hair loss symptoms.
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Abstract
PURPOSE OF REVIEW Skin is the main defense organ of the human body against external insults (ultraviolet radiations, infections by pathogenic microorganisms, and mechanical and chemical stress). The integrity and functions of the skin barrier are supported by an adequate supply of micronutrients, such as several vitamins. The purpose of this review was to analyze all vitamin-related skin problems. RECENT FINDINGS The World Health Organization has estimated that more than 2 billion people worldwide experience deficiencies in the intake of essential vitamins and minerals; the percentage of adults all over the world using daily vitamin supplements, for treatment or prevention of chronic disease, has increased very rapidly in recent years. In this review, 65 studies have been selected in order to examine the role of the main vitamins and their derivatives involved in maintaining the well-being of the skin and their use as prophylactic and therapeutic agents in the management of skin disorders.
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Perez-Sanchez AC, Tantry EK, Burns EK, Perez VM, Prabhu S, Katta R. Skin, Hair, and Nail Supplements: Marketing and Labeling Concerns. Cureus 2020; 12:e12062. [PMID: 33447491 PMCID: PMC7802115 DOI: 10.7759/cureus.12062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Background and objective Dietary supplements advertised to “boost collagen” or for “skin, hair, and nail” health are becoming increasingly popular, despite a lack of evidence to support their use. These products are not regulated by the United States (U.S.) Food and Drug Administration (FDA), and hence there is no centralized database listing current products. The goal of this study was to document and examine the labeling and marketing methods of these products. Methods Supplements including the words “glow,” “beauty,” “skin,” “hair,” or “nails” on the label were included in the sample. Seven stores within a 3-mile radius were included. Results A total of 176 unique supplements were identified. It was found that most products lacked independent testing; many utilized outdated daily values (DVs) of nutrients. Some had confusing dosing instructions, and most products made health-related marketing claims. Conclusion Dermatologists and primary care providers should be aware of the marketing claims commonly made by these products. Patients should be educated that these claims are generally not verified by independent testing agencies, the U.S. FDA, or by high-quality randomized control trials.
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Affiliation(s)
- Ariadna C Perez-Sanchez
- Internal Medicine, University of Texas Health Science Center at San Antonio, San Antonio, USA
| | | | - Emily K Burns
- Dermatology, Baylor College of Medicine, Houston, USA
| | | | | | - Rajani Katta
- Internal Medicine, Baylor College of Medicine, Houston, USA.,Dermatology, University of Texas Health Science Center at Houston, Houston, USA
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31
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Adelman MJ, Bedford LM, Potts GA. Clinical efficacy of popular oral hair growth supplement ingredients. Int J Dermatol 2020; 60:1199-1210. [DOI: 10.1111/ijd.15344] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/27/2020] [Accepted: 11/09/2020] [Indexed: 11/29/2022]
Affiliation(s)
| | - Lisa M. Bedford
- Department of Dermatology Wayne State University Detroit USA
| | - Geoff A. Potts
- Department of Dermatology Wayne State University Detroit USA
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32
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Merrill AE, Malvik NM, Ford DC, Krasowski MD. Continuation of Over-the-Counter Biotin Supplements in the Inpatient Setting: An Unexpected Source of Laboratory Error. J Appl Lab Med 2020; 6:735-742. [PMID: 33928390 DOI: 10.1093/jalm/jfaa167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 08/24/2020] [Indexed: 11/13/2022]
Abstract
BACKGROUND Over the past decade, use of high-dose biotin has increased significantly and can lead to erroneous results on some clinical immunoassays. In collaboration with pharmacists at our institution, we discovered that high biotin doses were being administered to inpatients as a continuation of patient-reported home biotin use. METHODS This retrospective study evaluated high-dose biotin administration in 226 inpatient encounters from 2009 to 2019 and its potential impact on concurrent immunoassay testing. RESULTS In 96% of cases, biotin was administered in the inpatient setting as a continuation of patient-reported home use. In total, 322 immunoassays capable of biotin interference were performed across 100 inpatient encounters with high-dose biotin administration. Troponin T and TSH were the most commonly performed immunoassays in this cohort. DISCUSSION Even though less than 5% of all high-dose biotin orders at our institution are placed for inpatients, hospitalized patients are still at risk for mismanagement due to erroneous immunoassay results. Immunoassay testing susceptible to biotin interference was performed in approximately 45% of inpatient encounters with biotin administration. Laboratories utilizing biotin-susceptible, sensitive cardiac troponin assays should be particularly cautious. Pharmacokinetic data for biotin clearance is especially lacking for certain populations likely to be hospitalized, such as those with renal failure. Given that medical conditions requiring high-dose biotin therapy are extremely rare, we recommend restricting biotin dosing during inpatient encounters for all other patients.
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Affiliation(s)
- Anna E Merrill
- Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA
| | - Natalie M Malvik
- Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA.,Division of Transfusion Medicine, Department of Medicine, UMass Memorial Medical Center, Worcester, MA
| | - Diana C Ford
- Department of Pharmaceutical Care, University of Iowa Health Care, Iowa City, IA
| | - Matthew D Krasowski
- Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA
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Watanabe K, Yamada A, Nishi Y, Tashiro Y, Sakai K. Relationship between the bacterial community structures on human hair and scalp. Biosci Biotechnol Biochem 2020; 84:2585-2596. [PMID: 32993459 DOI: 10.1080/09168451.2020.1809989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this study, we investigated and compared characteristics of the bacterial community structures on hair (scalp hair) and scalp in 18 individuals. Significant differences were found between the sites, in terms of cell density, alpha and beta diversity, and relative abundance of the phyla, Firmicutes and Proteobacteria, whereas no difference was found in relative abundance of the phylum Actinobacteria. Bacteria of the genus Cutibacterium showed similar relative abundance at both sites, whereas those of genus Pseudomonas were highly abundant on hair, and those of genus Staphylococcus were significantly lesser in abundance on hair than on scalp. Statistical correlations between the sites were high for the individual relative abundance of five major operational taxonomic units (OTUs). This suggests that the bacterial community structure on hair is composed of hair-specific genus, Pseudomonas, and skin-derived genera, Cutibacterium and Staphylococcus, and is distinguishable from other human skin microbiomes.
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Affiliation(s)
- Kota Watanabe
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University , Fukuoka, Japan
| | - Azusa Yamada
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University , Fukuoka, Japan
| | - Yuri Nishi
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University , Fukuoka, Japan
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University , Fukuoka, Japan.,Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University , Fukuoka, Japan
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University , Fukuoka, Japan.,Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University , Fukuoka, Japan
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Abdel Rahman SH, Mohammed Salem R, Hassan Sabry J. Biotin Deficiency in Telogen Effluvium: Fact or Fiction? THE JOURNAL OF CLINICAL AND AESTHETIC DERMATOLOGY 2020; 13:37-40. [PMID: 32308796 PMCID: PMC7159307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BACKGROUND: Biotin is popular in hair loss treatment supplements, although the frequency of its deficiency in patients with hair loss has not been established. OBJECTIVES: This work sought to assess the serum levels of biotin in patients with telogen effluvium. METHODS: This case-control study included 60 patients with telogen effluvium and 20 control subjects. Subjects who were on biotin therapy three months prior to the study and those reporting other causes of hair loss were excluded. The scalp of each patient was clinically and dermoscopically examined. Serum biotin levels were measured using enzyme-linked immunosorbent assay kits. RESULTS: Serum levels of biotin were optimal in patients and control groups with no significant difference between the groups. Insignificantly lower biotin levels in elderly patients, smokers, athletes, those with a history of recurrent infections, and women who were pregnant and/or lactating were observed. There was also an insignificant positive correlation between the serum level of biotin and patient age and an insignificant negative correlation between disease duration and patient body mass index. Serum biotin has a weak specificity and sensitivity in differentiating between cases and control subjects or between acute and chronic telogen effluvium. CONCLUSION: There was no significant difference in serum biotin levels between cases and controls or between those with acute or chronic telogen effluvium.
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Affiliation(s)
| | - Rehab Mohammed Salem
- All authors are with the Faculty of Medicine at Benha University in Benha, Egypt
| | - Jehan Hassan Sabry
- All authors are with the Faculty of Medicine at Benha University in Benha, Egypt
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35
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Bayart JL, Favresse J, Stoefs A, Closset M, Roy T, Fillée C, Rodriguez-Villalobos H, Kabamba-Mukadi B, Gruson D. Biotin interferences: Have we neglected the impact on serological markers? Clin Chim Acta 2020; 503:107-112. [PMID: 31978405 DOI: 10.1016/j.cca.2020.01.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 01/15/2020] [Accepted: 01/15/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Biotin has been reported to be a leading cause of interference on several immunoassay platforms using the streptavidin-biotin immobilization system. While biotin interferences have now been well characterized for several assays, only few data are available on their impact on serological markers of infectious viral diseases. METHODS Overall, 10 healthy volunteers (HVs) received a single 100 mg dose of biotin to evaluate its effect on hepatitis B serological markers. Blood samples were taken several times before and after biotin intake. In addition, spiking experiments were applied to investigate biotin's impact on anti-HIV/p24 Ag and anti-HCV antibody levels. Several procedures designed to overcome this interference were evaluated. RESULTS Biotin intake resulted in a false-negative anti-HBs immunological status (<10 mIU/mL) in 40.0% of cases. According to our anti-HBc and anti-HBe results, biotin intake was associated with 90.0% and 80.0% of false positive results, respectively. At the theoretical biotin peak concentration following a 100 mg intake, 50.0% and 66.6% of anti-HIV and anti-HCV results were false negatives, respectively. All the procedures evaluated to overcome the interference were proven effective. CONCLUSION HBV, HCV, and HIV serological markers are likely to be highly sensitive to biotin. Our data confirm that the scope of biotin interference is broader than commonly described.
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Affiliation(s)
- Jean-Louis Bayart
- Département des Laboratoires Cliniques, Cliniques Universitaires St-Luc - Université Catholique de Louvain, Brussels, Belgium.
| | - Julien Favresse
- Département des Laboratoires Cliniques, Cliniques Universitaires St-Luc - Université Catholique de Louvain, Brussels, Belgium
| | - Anke Stoefs
- Département des Laboratoires Cliniques, Cliniques Universitaires St-Luc - Université Catholique de Louvain, Brussels, Belgium
| | - Mélanie Closset
- Département des Laboratoires Cliniques, CHU - Mont-Godinne - Université Catholique de Louvain, Yvoir, Belgium
| | - Tatiana Roy
- Département des Laboratoires Cliniques, Cliniques Saint-Pierre, Ottignies, Belgium
| | - Catherine Fillée
- Département des Laboratoires Cliniques, Cliniques Universitaires St-Luc - Université Catholique de Louvain, Brussels, Belgium
| | - Hector Rodriguez-Villalobos
- Département des Laboratoires Cliniques, Cliniques Universitaires St-Luc - Université Catholique de Louvain, Brussels, Belgium
| | - Benoît Kabamba-Mukadi
- Département des Laboratoires Cliniques, Cliniques Universitaires St-Luc - Université Catholique de Louvain, Brussels, Belgium; Pôle de Recherche en Microbiologie Médicale, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium
| | - Damien Gruson
- Département des Laboratoires Cliniques, Cliniques Universitaires St-Luc - Université Catholique de Louvain, Brussels, Belgium; Pôle de Recherche en Endocrinologie, Diabète et Nutrition, Institut de Recherche Expérimentale et Clinique, Cliniques Universitaires St-Luc - Université Catholique de Louvain, Brussels, Belgium
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Abstract
Nuts are fruits composed of two parts: an inedible hard shell and an edible seed. Nuts are known as an energy-dense and nutrient-rich food source. In general, nuts are recognized as a good source of fat, fiber, and protein. Nuts are extremely beneficial parts of any diet since their consumption may lower risk for some diseases, such as cardiovascular diseases and cancer. They are acknowledged for their low glycemic index owning to high unsaturated fat and protein content and relatively low carbohydrate content. They have been shown to increase cognitive function as well.
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Affiliation(s)
- Sawsan G Mohammed
- Qatar Research Leadership Program (QRLP), Qatar Foundation, Doha, Qatar.
| | - M Walid Qoronfleh
- Research & Policy Department, World Innovation Summit for Health (WISH), Qatar Foundation, Doha, Qatar.
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37
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Best practices in mitigating the risk of biotin interference with laboratory testing. Clin Biochem 2019; 74:1-11. [DOI: 10.1016/j.clinbiochem.2019.08.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 08/28/2019] [Indexed: 12/23/2022]
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38
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Piraccini BM, Berardesca E, Fabbrocini G, Micali G, Tosti A. Biotin: overview of the treatment of diseases of cutaneous appendages and of hyperseborrhea. GIORN ITAL DERMAT V 2019; 154:557-566. [PMID: 31638351 DOI: 10.23736/s0392-0488.19.06434-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
One of the most common micronutrient deficiencies with cutaneous findings is the vitamin B, also known as biotin, deficiency. Biotin deficiency may be due to congenital lack of biotinidase, or acquired following some conditions that interfere with its absorption, such as inflammatory bowel disorders, a diet too rich in avidin, magnesium deficiency, smoking habit and treatment with broad-spectrum antibiotics, anticonvulsants and sulfonamides. This review highlights the role of biotin in the most common skin disorders such associated with biotin deficiency and an approach to their treatment. Biotin administration may improve the treatment of hair loss when deficiency is detected on the basis of a careful patient history, clinical examination and the determination of serum biotin levels. The use of biotin is rationale in seborrheic dermatitis as the vitamin intercepts the main metabolic pathways underlying the pathogenesis of the disease. Treatment with biotin could also be useful in comedonal acne characterized by a high rate of seborrhea, and may be helpful for acne treated with topical retinoids, contributing to the control of flaking and irritation. The tolerability of biotin is excellent and there is no risk of hypervitaminosis even in the case of high doses. It is important that administration is controlled by physicians and follows a medical diagnosis and prescription. Correct doses used in dermatological conditions are safe and are not at risk of interference with laboratory tests.
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Affiliation(s)
- Bianca M Piraccini
- Department of Diagnostic and Experimental Medicine (DIMES), Alma Mater Studiorum University, Bologna, Italy -
| | | | - Gabriella Fabbrocini
- Department of Clinical Medicine and Surgery, University of Naples, Naples, Italy
| | - Giuseppe Micali
- Section of Dermatology and Venereology, Department of Medicine and Surgery, Vittorio Emanuele Polyclinic Hospital, Catania, Italy
| | - Antonella Tosti
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami, Miami, FL, USA
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39
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El-Esawy FM, Hussein MS, Ibrahim Mansour A. Serum biotin and zinc in male androgenetic alopecia. J Cosmet Dermatol 2019; 18:1546-1549. [PMID: 30714301 DOI: 10.1111/jocd.12865] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 12/21/2018] [Accepted: 01/03/2019] [Indexed: 01/24/2023]
Abstract
BACKGROUND Male androgenetic alopecia (MAGA) is caused by the conversion of the terminal to vellus hair. Zinc is one of the most studied trace elements in hair disorders and biotin is one of the most prescribed supplement for its treatment. OBJECTIVES The study aimed to evaluate serum zinc and biotin levels in MAGA patients to answer the question if there is a value to add zinc or biotin as a supplements in the MAGA treatment. PATIENTS AND METHODS Sixty MAGA patients and 60 age, sex, and body mass index-matched healthy volunteers were included. We measured serum biotin and zinc in all participants. RESULTS Zinc (µg/dL) was lower significantly in patients compared to controls (P = 0.01), suboptimal biotin (ng/L) levels were in patients, and within normal values in controls (P = 0.01). A positive significant correlation was found between serum zinc and serum biotin (r = 0.489, P = 0.001). Serum zinc and biotin showed a nonsignificant correlation with age and disease duration. A non-significant relation was obtained between the MAGA grades, and zinc (P = 0.485) and biotin levels (P = 0.367). CONCLUSIONS Serum zinc showed subnormal value and adding zinc supplement in MAGA treatment is recommended. Serum biotin showed a suboptimal level in MAGA patients that is not correlated with patients' age or disease severity. Biotin supplement in MAGA treatment may add value to hair quality and texture. We recommend future biotin evaluation in serum combined with its metabolites in MAGA patients' urine.
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Affiliation(s)
- Fatma Mohamed El-Esawy
- Department of Dermatology and Andrology, Faculty of Medicine, Benha University, Benha, Egypt
| | - Mohamed Saber Hussein
- Department of Dermatology and Andrology, Faculty of Medicine, Benha University, Benha, Egypt
| | - Amira Ibrahim Mansour
- Department of Clinical Pathology, Faculty of Medicine, Benha University, Benha, Egypt
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40
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Abstract
Background Biotin is an essential cofactor for metabolic pathways in humans. It is frequently self-prescribed by consumers and often recommended by dermatologists and primary care physicians, despite limited evidence of its effect on skin, hair, and nail disorders. A recent Food and Drug Administration (FDA) warning stated that biotin can interfere with laboratory tests. Objectives Our objectives were to determine the perception of biotin by Amazon consumers, including perception of improvement in hair, skin, or nails with biotin supplementation and consumers’ awareness of the FDA warning on biotin. Methods The keyword biotin was searched on Amazon.com, and the top 1 percentile of biotin products according to average consumer review were analyzed for dosage, indications, price, quantity, warnings, number, and average score of reviews. Results From 16 biotin products analyzed, the mean review score was 4.38. The mean percentage of reviews stating that biotin helped hair, nails, and skin was 27.2%, 15.03%, and 2.8%, respectively. No biotin products mentioned the FDA warning, and only 1 reviewer referenced the warning. Conclusions These findings suggest that biotin supplementation is prevalent and perceived as helpful despite limited evidence of improvement. The majority of biotin users were unaware that biotin interacted with laboratory testing demonstrating the need for biotin manufacturers to include a warning label about the FDA warning and for physicians to warn their patients on the risks and benefits of biotin supplementation.
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Affiliation(s)
- Jason J. John
- Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Shari R. Lipner
- Department of Dermatology, Weill Cornell Medicine, New York, NY, USA
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Abstract
Biotin is a component of the B-complex vitamins that has been widely used in over-the-counter supplements. The effects of biotin on thyroid function tests (TFTs) have been recently reported by multiple authors. We report here a case of a patient who presented with TFTs consistent with hyperthyroidism and a positive radioactive iodine uptake (RAIU) scan while taking biotin supplements. The TFTs normalized almost a month later and continued to be normal even after resumption of biotin supplements. Interpreting TFTs while patients are taking biotin could pose a diagnostic challenge, so we suggest more frequent monitoring for those patients before starting them on long-term anti-thyroid medications.
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Affiliation(s)
- Zara Latif
- Internal Medicine, University of Tennessee Health Science Center, Memphis, USA
| | - Marc J Crupie
- Family Medicine, University of Tennessee Health Sciences Center, Memphis, USA
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42
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Wolf B. High doses of biotin can interfere with immunoassays that use biotin-strept(avidin) technologies: Implications for individuals with biotin-responsive inherited metabolic disorders. Mol Genet Metab 2019; 127:321-324. [PMID: 31320189 DOI: 10.1016/j.ymgme.2019.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/07/2019] [Accepted: 07/08/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Barry Wolf
- Division of Genetics, Birth Defects and Metabolism, Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern Feinberg School of Medicine, 225 E. Chicago, Chicago, IL 60611, United States of America.
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DiBaise M, Tarleton SM. Hair, Nails, and Skin: Differentiating Cutaneous Manifestations of Micronutrient Deficiency. Nutr Clin Pract 2019; 34:490-503. [DOI: 10.1002/ncp.10321] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Melo DF, de Mattos Barreto T, Plata GT, Araujo LR, Tortelly VD. Excellent response to mesotherapy as adjunctive treatment in male androgenetic alopecia. J Cosmet Dermatol 2019; 19:75-77. [DOI: 10.1111/jocd.12983] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/07/2019] [Accepted: 04/11/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel Fernandes Melo
- Post‐Graduate Program in Medical Sciences of the Hospital Universitário Pedro Ernesto Universidade do Estado do Rio de Janeiro (UERJ) Rio de Janeiro Brazil
- Hospital Naval Marcílio Dias Rio de Janeiro Brazil
| | | | | | | | - Violeta Duarte Tortelly
- Post‐Graduate Program in Medical Sciences of the Hospital Universitário Pedro Ernesto Universidade do Estado do Rio de Janeiro (UERJ) Rio de Janeiro Brazil
- Hospital Naval Marcílio Dias Rio de Janeiro Brazil
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45
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John JJ, Cooley V, Lipner SR. Assessment of biotin supplementation among patients in an outpatient dermatology clinic. J Am Acad Dermatol 2019; 81:620-621. [PMID: 30630025 DOI: 10.1016/j.jaad.2018.12.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Jason J John
- Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - Victoria Cooley
- Department of Healthcare Policy and Research, Weill Cornell Medicine, New York, New York
| | - Shari R Lipner
- Department of Dermatology, Weill Cornell Medicine, New York, New York.
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46
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Kim M, Basharat A, Santosh R, Mehdi SF, Razvi Z, Yoo SK, Lowell B, Kumar A, Brima W, Danoff A, Dankner R, Bergman M, Pavlov VA, Yang H, Roth J. Reuniting overnutrition and undernutrition, macronutrients, and micronutrients. Diabetes Metab Res Rev 2019; 35:e3072. [PMID: 30171821 DOI: 10.1002/dmrr.3072] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 08/20/2018] [Accepted: 08/26/2018] [Indexed: 12/15/2022]
Abstract
Over-nutrition and its late consequences are a dominant theme in medicine today. In addition to the health hazards brought on by over-nutrition, the medical community has recently accumulated a roster of health benefits with obesity, grouped under "obesity paradox." Throughout the world and throughout history until the 20th century, under-nutrition was a dominant evolutionary force. Under-nutrition brings with it a mix of benefits and detriments that are opposite to and continuous with those of over-nutrition. This continuum yields J-shaped or U-shaped curves relating body mass index to mortality. The overweight have an elevated risk of dying in middle age of degenerative diseases while the underweight are at increased risk of premature death from infectious conditions. Micronutrient deficiencies, major concerns of nutritional science in the 20th century, are being neglected. This "hidden hunger" is now surprisingly prevalent in all weight groups, even among the overweight. Because micronutrient replacement is safe, inexpensive, and predictably effective, it is now an exceptionally attractive target for therapy across the spectrum of weight and age. Nutrition-related conditions worthy of special attention from caregivers include excess vitamin A, excess vitamin D, and deficiency of magnesium.
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Affiliation(s)
- Miji Kim
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Anam Basharat
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Ramchandani Santosh
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Syed F Mehdi
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Zanali Razvi
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Sun K Yoo
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Barbara Lowell
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Amrat Kumar
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Wunnie Brima
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
- Department of Medicine, Albert Einstein College of Medicine, New York, USA
| | - Ann Danoff
- Department of Medicine, Cpl. Michael J Crescenz Veterans Administration Medical Center, Philadelphia, PA, USA
| | - Rachel Dankner
- Department of Epidemiology and Preventive Medicine, School of Public Health, The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michael Bergman
- Department of Medicine, Division of Endocrinology, NYU School of Medicine, New York, NY, USA
| | - Valentin A Pavlov
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
- Center for Biomedical Science and Center for Bioelectric Medicine, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Huan Yang
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
- Center for Biomedical Science and Center for Bioelectric Medicine, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
| | - Jesse Roth
- Laboratory of Diabetes and Diabetes-Related Disorders, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
- Department of Medicine, Albert Einstein College of Medicine, New York, USA
- Center for Biomedical Science and Center for Bioelectric Medicine, The Feinstein Institute for Medical Research, Northwell Health, New York, USA
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Gifford JL, de Koning L, Sadrzadeh SMH. Strategies for mitigating risk posed by biotin interference on clinical immunoassays. Clin Biochem 2018; 65:61-63. [PMID: 30582902 DOI: 10.1016/j.clinbiochem.2018.12.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/24/2018] [Accepted: 12/19/2018] [Indexed: 11/17/2022]
Abstract
Recently, biotin use as an oral supplement has increased significantly among the general population. Biotin is a water soluble B-vitamin and is marketed to improve the cosmetic appearance of hair, skin, and nails. In addition, high-dose biotin (>5 mg/day) is prescribed to treat inborn errors of metabolism and multiple sclerosis. Many commercial immunoassays employ the high affinity interaction between biotin and streptavidin, a protein purified from bacteria, as part of the analyte capture mechanism. As such, these immunoassays are subject to this interference. The list of affected immunoassays is vendor specific but includes tests for troponin, serum and urine Beta hCG, thyroid function, and tumor markers. The interference can be positive or negative in nature depending on the immunoassay. To address this issue, patients are recommended to abstain from taking biotin supplements for 48 h, and laboratorians and clinicians must be familiar with the potential for biotin interference in performed lab tests. Here we describe strategies to treat high biotin specimens and make them suitable for testing; and detail a number of approaches used successfully by our laboratory to educate patients, doctors, and other healthcare professionals about this interference and to mitigate the posed patient safety risk.
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Affiliation(s)
- Jessica L Gifford
- Calgary Laboratory Services, 9, 3535 Research Rd NW, Calgary, AB T2L 2K8, Canada; Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Health Sciences Centre, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada.
| | - Lawrence de Koning
- Calgary Laboratory Services, 9, 3535 Research Rd NW, Calgary, AB T2L 2K8, Canada; Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Health Sciences Centre, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
| | - S M Hossein Sadrzadeh
- Calgary Laboratory Services, 9, 3535 Research Rd NW, Calgary, AB T2L 2K8, Canada; Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Health Sciences Centre, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
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Saxena R, Mittal P, Clavaud C, Dhakan DB, Hegde P, Veeranagaiah MM, Saha S, Souverain L, Roy N, Breton L, Misra N, Sharma VK. Comparison of Healthy and Dandruff Scalp Microbiome Reveals the Role of Commensals in Scalp Health. Front Cell Infect Microbiol 2018; 8:346. [PMID: 30338244 PMCID: PMC6180232 DOI: 10.3389/fcimb.2018.00346] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 09/11/2018] [Indexed: 12/20/2022] Open
Abstract
Several scalp microbiome studies from different populations have revealed the association of dandruff with bacterial and fungal dysbiosis. However, the functional role of scalp microbiota in scalp disorders and health remains scarcely explored. Here, we examined the bacterial and fungal diversity of the scalp microbiome and their potential functional role in the healthy and dandruff scalp of 140 Indian women. Propionibacterium acnes and Staphylococcus epidermidis emerged as the core bacterial species, where the former was associated with a healthy scalp and the latter with dandruff scalp. Along with the commonly occurring Malassezia species (M. restricta and M. globosa) on the scalp, a strikingly high association of dandruff with yet uncharacterized Malassezia species was observed in the core mycobiome. Functional analysis showed that the fungal microbiome was enriched in pathways majorly implicated in cell-host adhesion in the dandruff scalp, while the bacterial microbiome showed a conspicuous enrichment of pathways related to the synthesis and metabolism of amino acids, biotin, and other B-vitamins, which are reported as essential nutrients for hair growth. A systematic measurement of scalp clinical and physiological parameters was also carried out, which showed significant correlations with the microbiome and their associated functional pathways. The results point toward a new potential role of bacterial commensals in maintaining the scalp nutrient homoeostasis and highlights an important and yet unknown role of the scalp microbiome, similar to the gut microbiome. This study, therefore, provides new perspectives on the better understanding of the pathophysiology of dandruff.
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Affiliation(s)
- Rituja Saxena
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Parul Mittal
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | | | - Darshan B Dhakan
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | | | | | | | - Luc Souverain
- L'Oréal Research & Innovation, Aulnay-sous-Bois, France
| | - Nita Roy
- L'Oréal India Pvt. Ltd., Bengaluru, India
| | - Lionel Breton
- L'Oréal Research & Innovation, Aulnay-sous-Bois, France
| | - Namita Misra
- L'Oréal Research & Innovation, Aulnay-sous-Bois, France.,L'Oréal India Pvt. Ltd., Bengaluru, India
| | - Vineet K Sharma
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
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Hosking AM, Juhasz M, Atanaskova Mesinkovska N. Complementary and Alternative Treatments for Alopecia: A Comprehensive Review. Skin Appendage Disord 2018; 5:72-89. [PMID: 30815439 DOI: 10.1159/000492035] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Accepted: 07/10/2018] [Indexed: 12/29/2022] Open
Abstract
The treatment of alopecia is limited by a lack of therapies that induce and sustain disease remission. Given the negative psychosocial impact of hair loss, patients that do not see significant hair restoration with conventional therapies often turn to complementary and alternative medicine (CAM). Although there are a variety of CAM treatment options on the market for alopecia, only a few are backed by multiple randomized controlled trials. Further, these modalities are not regulated by the Food and Drug Administration and there is a lack of standardization of bioactive in gredients in over-the-counter vitamins, herbs, and supplements. In this article, we provide a comprehensive review of the efficacy, safety, and tolerability of CAM, including natural products and mind and body practices, in the treatment of hair loss. Overall, there is a need for additional studies investigating CAM for alopecia with more robust clinical design and standardized, quantitative outcomes.
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Affiliation(s)
- Anna-Marie Hosking
- Department of Dermatology, University of California, Irvine, Irvine, California, USA
| | - Margit Juhasz
- Department of Dermatology, University of California, Irvine, Irvine, California, USA
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50
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Rethinking biotin therapy for hair, nail, and skin disorders. J Am Acad Dermatol 2018; 78:1236-1238. [PMID: 29438761 DOI: 10.1016/j.jaad.2018.02.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 01/23/2018] [Accepted: 02/04/2018] [Indexed: 11/22/2022]
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