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Makambai A, Mazhitova A, Altıntaş AK, Kuleasan H. Application of selected lactic acid bacteria isolates for bread production without baker's yeast. Food Sci Biotechnol 2024; 33:3279-3290. [PMID: 39328226 PMCID: PMC11422332 DOI: 10.1007/s10068-024-01571-7] [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: 10/03/2023] [Revised: 02/25/2024] [Accepted: 03/27/2024] [Indexed: 09/28/2024] Open
Abstract
The isolates of lactic acid bacteria (LAB) from traditional fermented koumiss and homemade dry rye sourdough were examined for their potential to be used in bread production without baker's yeast. Among twenty isolates, three with superior fermentation ability and acidification capability were identified by 16S rRNA gene sequencing. Leuconostoc mesenteroides from koumiss, Levilactobacillus brevis from 48 h activated rye sourdough, and Leuconostoc citreum from rye sourdough extract were singly and mixed (1:1:1) inoculated into liquid sourdoughs and used for bread-making tests. Bread prepared with Saccharomyces cerevisiae was used as the control. The substitution of water with whey in LAB fermentation demonstrated lower pH and higher total titratable acidity values in the sourdough. The resulting bread's color parameters, textural properties, and sensory characteristics confirmed the suitability of the selected strains to produce bread without baker's yeast and highlighted the enhancement of new starter varieties. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-024-01571-7.
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Affiliation(s)
- Azhar Makambai
- Department of Food Engineering, Kyrgyz-Turkish Manas University, Chyngyz Aitmatov Campus (Djal), Bishkek, 720038 Kyrgyz Republic
| | - Aichurok Mazhitova
- Department of Food Engineering, Kyrgyz-Turkish Manas University, Chyngyz Aitmatov Campus (Djal), Bishkek, 720038 Kyrgyz Republic
| | | | - Hakan Kuleasan
- Department of Food Engineering, Suleyman Demirel University, 32260 Isparta, Turkey
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2
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Fleshner L, Roster K, Farabi B, Hirani R, Tepper K, Pitchumoni CS, Safai B, Marmon S. Follicular Skin Disorders, Inflammatory Bowel Disease, and the Microbiome: A Systematic Review. Int J Mol Sci 2024; 25:10203. [PMID: 39337688 PMCID: PMC11431962 DOI: 10.3390/ijms251810203] [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: 08/16/2024] [Revised: 09/15/2024] [Accepted: 09/20/2024] [Indexed: 09/30/2024] Open
Abstract
Follicular skin disorders, including hidradenitis suppurativa (HS), frequently coexist with systemic autoinflammatory diseases, such as inflammatory bowel disease (IBD) and its subtypes, Crohn's disease and ulcerative colitis. Previous studies suggest that dysbiosis of the human gut microbiome may serve as a pathogenic link between HS and IBD. However, the role of the microbiome (gut, skin, and blood) in the context of IBD and various follicular disorders remains underexplored. Here, we performed a systematic review to investigate the relationship between follicular skin disorders, IBD, and the microbiome. Of the sixteen included studies, four evaluated the impact of diet on the microbiome in HS patients, highlighting a possible link between gut dysbiosis and yeast-exclusion diets. Ten studies explored bacterial colonization and HS severity with specific gut and skin microbiota, including Enterococcus and Veillonella. Two studies reported on immunological or serological biomarkers in HS patients with autoinflammatory disease, including IBD, and identified common markers including elevated cytokines and T-lymphocytes. Six studies investigated HS and IBD patients concurrently. Our systematic literature review highlights the complex interplay between the human microbiome, IBD, and follicular disorders with a particular focus on HS. The results indicate that dietary modifications hold promise as a therapeutic intervention to mitigate the burden of HS and IBD. Microbiota analyses and the identification of key serological biomarkers are crucial for a deeper understanding of the impact of dysbiosis in these conditions. Future research is needed to more thoroughly delineate the causal versus associative roles of dysbiosis in patients with both follicular disorders and IBD.
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Affiliation(s)
- Lauren Fleshner
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
| | - Katie Roster
- Dermatology Department, Georgetown University School of Medicine, Medstar Washington Hospital Center, Washington, DC 20007, USA
| | - Banu Farabi
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
- Dermatology Department, NYC Health + Hospital/Metropolitan, New York, NY 10029, USA
| | - Rahim Hirani
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
- Dermatology Department, NYC Health + Hospital/Metropolitan, New York, NY 10029, USA
| | - Katharine Tepper
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
| | - Capecomorin S Pitchumoni
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
- Department of Medicine, Saint Peter's University Hospital, New Brunswick, NJ 08901, USA
| | - Bijan Safai
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
- Dermatology Department, NYC Health + Hospital/Metropolitan, New York, NY 10029, USA
| | - Shoshana Marmon
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
- Department of Medicine, NYC Health + Hospital/South Brooklyn Health, Brooklyn, NY 11235, USA
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3
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Vural S, Baskurt D, Yıldırıcı Ş, Rasulova G, Danacı S, Botsalı A. Evaluating dietary considerations in hidradenitis suppurativa: a critical examination of existing knowledge. Int J Dermatol 2024; 63:987-998. [PMID: 38406977 DOI: 10.1111/ijd.17101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/15/2024] [Accepted: 02/07/2024] [Indexed: 02/27/2024]
Abstract
Hidradenitis suppurativa (HS) is a chronic condition that can overwhelm patients, and the effectiveness of supplementary dietary treatments remains uncertain. The primary aim of this review is to explore the connection between diet and HS progression. However, it is imperative to note that the evidence supporting a substantial role of the diet in HS remains weak. Dietary alterations alone should not be considered independent solutions for managing HS. Medical therapy continues to be indispensable for adequate treatment. Research indicates that the Mediterranean lifestyle and diet may provide cost-effective and beneficial adjustments when combined with traditional therapies. Conversely, foods with a high glycemic index and dairy could worsen HS symptoms, conceivably through mechanisms linked to insulin resistance and inflammation. Zinc, known for its antioxidant properties, shows promise as an adjunct therapy. Moreover, evidence suggests a connection between vitamin D deficiency and HS severity, although the findings are inconclusive. Brewer's yeast-free diet, B12 supplementation, intermittent fasting, and reducing the intake of refined sugar and dairy merit further investigation. In conclusion, this review highlights the need for additional research because of the lack of standardized reporting of clinical effects in the studies under scrutiny. A deeper exploration of the pathophysiology focusing on dietary modifications and their potential associations with HS severity is essential. Furthermore, it is crucial to recognize that patients' willingness to experiment with new diets makes them vulnerable to fraudulent interventions, highlighting the importance of evidence-based dietary guidance.
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Affiliation(s)
- Seçil Vural
- Department of Dermatology and Venereology, Koç University School of Medicine, Istanbul, Turkey
| | - Defne Baskurt
- School of Medicine, Koç University, Istanbul, Turkey
| | | | - Gunel Rasulova
- Department of Dermatology and Venereology, Koç University School of Medicine, Istanbul, Turkey
| | - Senem Danacı
- Department of Medical Pharmacology, Istanbul Cerrahpasa University, Istanbul, Turkey
| | - Aysenur Botsalı
- Department of Dermatology and Venereology, University of Health Sciences, Gülhane Training and Research Hospital, Ankara, Turkey
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Lee H, Sim N, Fotouhi A, Daveluy S. Vegan Diet in Dermatology: A Review. J Clin Med 2023; 12:5800. [PMID: 37762741 PMCID: PMC10531971 DOI: 10.3390/jcm12185800] [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: 08/13/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Diet is known to play a role in the development of skin disorders. While a vegan diet is frequently described as a risk factor for skin disease secondary to nutritional deficiency, this risk may be overestimated. This review aims to debunk myths and provide information on skin disorders and inflammatory skin conditions that have associations with specific nutritional deficiencies in the context of a vegan diet. A literature search was performed for each nutrient and inflammatory skin disease using the PubMed/MEDLINE database and public health website pages concerning a vegan diet. The literature has individual cases reporting skin disease due to deficiencies in vitamin B2 and vitamin A in patients following a vegan diet. The recommended daily amounts of nutrients and vitamins can be fulfilled on a vegan diet. Vegan diets also avoid food groups such as dairy and other animal-based products, which holds benefits in inflammatory skin diseases including acne, psoriasis, hidradenitis suppurativa, and atopic dermatitis. Overall, the risk of skin disease secondary to nutritional deficiency in patients following a vegan diet is very low and likely over-emphasized. A well-balanced and conscientiously planned vegan diet can adequately provide the necessary amounts of proteins, vitamins, and minerals to support skin health.
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Affiliation(s)
- Hannah Lee
- School of Medicine, Wayne State University, Detroit, MI 48201, USA; (H.L.); (N.S.)
| | - Nathan Sim
- School of Medicine, Wayne State University, Detroit, MI 48201, USA; (H.L.); (N.S.)
| | - Audrey Fotouhi
- Department of Dermatology, Wayne State University, Detroit, MI 48201, USA;
| | - Steven Daveluy
- Department of Dermatology, Wayne State University, Detroit, MI 48201, USA;
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Aguwa C, Enwereji N, Santiago S, Hine A, Kels GG, McGee J, Lu J. Targeting dysbiosis in psoriasis, atopic dermatitis, and hidradenitis suppurativa: the gut-skin axis and microbiome-directed therapy. Clin Dermatol 2023; 41:640-649. [PMID: 37816413 DOI: 10.1016/j.clindermatol.2023.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
Emerging evidence highlights the gut-skin microbiota as a potential therapeutic target for the management of inflammatory-driven cutaneous diseases as well as the interconnection of the gut-skin microbiota in disease pathogenesis and progression. Although not fully understood, recent research has indicated that commensal microbiota and the interaction of the gut-skin axis play an important role in maintaining skin homeostasis. Dysbiosis and disruption of the skin-gut microbiome may lead to impaired skin barrier function, thus triggering downstream inflammatory responses involved in the development of inflammatory skin disorders, especially in atopic dermatitis, psoriasis, and hidradenitis suppurativa. The skin microbiome may also serve as adjunctive therapeutic modalities for treatment. Herein, we review the latest reports on the interrelationship between microbial dysbiosis and inflammatory cutaneous diseases as well as emerging microbiome-directed therapeutics in atopic dermatitis, psoriasis, and hidradenitis suppurativa.
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Affiliation(s)
- Chibuzo Aguwa
- School of Medicine, Meharry Medical College, Nashville, Tennessee, USA
| | - Ndidi Enwereji
- Frank H. Netter MD School of Medicine, Quinnipiac University, North Haven, Connecticut, USA
| | - Sueheidi Santiago
- Department of Dermatology, University of Connecticut Health Center, Farmington, Connecticut, USA
| | - Ashley Hine
- Department of Dermatology, University of Connecticut Health Center, Farmington, Connecticut, USA
| | | | - Jean McGee
- Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Jun Lu
- Department of Dermatology, University of Connecticut Health Center, Farmington, Connecticut, USA.
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Weber I, Giefer J, Martin KL. Effects of Exercise and Dietary Modifications on Hidradenitis Suppurativa: A Systematic Review. Am J Clin Dermatol 2023; 24:343-357. [PMID: 36757580 DOI: 10.1007/s40257-023-00756-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/10/2023] [Indexed: 02/10/2023]
Abstract
BACKGROUND Hidradenitis suppurativa affects up to 4% of the population worldwide. Many treatment options exist but these come with a significant side-effect profile. Exercise, weight loss, and dietary modifications may be simple inexpensive alternatives and/or adjuncts to treating this disease. OBJECTIVES We aimed to summarize published evidence on the effects of dietary, weight loss, and exercise interventions on the clinical course, severity, or subjective improvement of hidradenitis suppurativa and to provide a framework regarding dietary changes and exercise modalities for clinicians treating this disease. METHODS A literature search of Scopus (1993 onwards), PubMed (1986 onwards), and MEDLINE (OVID interface, 1946 onwards) was conducted on 22 October, 2022. Case-control studies, cohort studies, and randomized controlled trials with five or more subjects conducted on adult participants (aged >18 years) were included; case reports, case series, and review papers were excluded. RESULTS Fifteen studies involving 2829 patients were included, encompassing nine cohort studies, five cross-sectional studies, and one cross-over study. Patients who were female, lost more than 50 pounds (22.7 kg), or were obese prior to weight loss saw improvement in hidradenitis suppurativa severity with weight loss. There was evidence for beneficial effects of diets, such as the Mediterranean diet that minimizes sugar, highly processed carbohydrates, and dairy, and emphasizes chicken, fruits, and vegetables, in patients with hidradenitis suppurativa. Evidence also supported benefit from oral zinc and vitamin D supplementation. CONCLUSIONS More evidence is needed in the form of randomized controlled trials or well-designed controlled trials to evaluate the effect of exercise and dietary manipulation on the hidradenitis suppurativa disease course. Overall, there is significant but weak evidence to support improvement in hidradenitis suppurativa severity with weight loss, dietary changes, and micronutrient supplementation. There is no significant evidence to support improvement in hidradenitis suppurativa symptomology with any type of exercise intervention. CLINICAL TRIAL REGISTRATION This protocol was registered with PROSPERO with the registration number CRD4202235099.
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Affiliation(s)
- Isaac Weber
- School of Medicine, University of Missouri, Columbia, MO, USA
| | - Josie Giefer
- School of Medicine, University of Missouri, Columbia, MO, USA
| | - Kari L Martin
- Department of Dermatology, University of Missouri, 1 Hospital Dr., Columbia, MO, 65212, USA.
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Hidradenitis Suppurativa: The Influence of Gender, the Importance of Trigger Factors and the Implications for Patient Habits. Biomedicines 2022; 10:biomedicines10112973. [PMID: 36428540 PMCID: PMC9687269 DOI: 10.3390/biomedicines10112973] [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: 08/16/2022] [Revised: 10/31/2022] [Accepted: 11/08/2022] [Indexed: 11/22/2022] Open
Abstract
Hidradenitis suppurativa (HS) is a debilitating, chronic, inflammatory skin disease primarily affecting apocrine gland-rich areas of the body. On the one hand, the presence of triggering factors-some identified, others only hypothesized-may initiate or perpetuate the pathogenic process of HS. In addition to cigarette smoking and diet, other trigger factors, including choice of clothing, are frequently observed in clinical practice. On the other hand, the presence of disease may influence habits of HS patients. Indeed, high incidences of sexual and sleep impairment have been reported in these patients. Consequently, alcohol and substance abuse may be a coping strategy for the emotional and psychological disease burden. Furthermore, a greater awareness of gender differences in HS may be important for dermatologists in their own clinical practice (i.e., pregnancy and breastfeeding). Consequently, in this loop interaction, comprehensive knowledge of all factors involved is crucial for the management of HS patients. Thus, the objective of this review is to (i) discuss the influence of gender on HS, (ii) summarize the most frequent triggering factors of HS and (iii) analyze the impact of HS on patient habits.
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8
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Luck ME, Tao J, Lake EP. The Skin and Gut Microbiome in Hidradenitis Suppurativa: Current Understanding and Future Considerations for Research and Treatment. Am J Clin Dermatol 2022; 23:841-852. [DOI: 10.1007/s40257-022-00724-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2022] [Indexed: 11/30/2022]
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10
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Hwang J, Rick J, Hsiao J, Hamzavi IH, Shi VY. Microbiome in Hidradenitis Suppurativa: Current Evidence and Practice. CURRENT DERMATOLOGY REPORTS 2022. [DOI: 10.1007/s13671-021-00349-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Mintoff D, Borg I, Pace NP. The Clinical Relevance of the Microbiome in Hidradenitis Suppurativa: A Systematic Review. Vaccines (Basel) 2021; 9:1076. [PMID: 34696185 PMCID: PMC8537933 DOI: 10.3390/vaccines9101076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/18/2021] [Accepted: 09/20/2021] [Indexed: 12/21/2022] Open
Abstract
Hidradenitis suppurativa is a chronic disease of the pilosebaceous unit. The name of the condition is a testament to the presumed relationship between the disease and the microbiome. The pathophysiology of hidradenitis suppurativa is, however, complex and believed to be the product of a multifactorial interplay between the interfollicular epithelium, pilosebaceous unit, microbiome, as well as genetic and environmental factors. In this review we assimilate the existing literature regarding the role played by the human microbiome in HS in various contexts of the disease, including the pathophysiologic, therapeutic, and potentially, diagnostic as well prognostic. In conclusion, the role played by the microbiome in HS is extensive and relevant and can have bench-to-bedside applications.
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Affiliation(s)
- Dillon Mintoff
- Department of Pathology, Faculty of Medicine and Surgery, University of Malta, MSD 2080 Msida, Malta;
- Department of Dermatology, Mater Dei Hospital, Triq Id-Donaturi tad-Demm, MSD 2090 Msida, Malta
| | - Isabella Borg
- Department of Pathology, Faculty of Medicine and Surgery, University of Malta, MSD 2080 Msida, Malta;
- Centre for Molecular Medicine and Biobanking, Faculty of Medicine and Surgery, University of Malta, MSD 2080 Msida, Malta;
- Medical Genetics Unit, Department of Pathology, Mater Dei Hospital, MSD 2090 Msida, Malta
| | - Nikolai Paul Pace
- Centre for Molecular Medicine and Biobanking, Faculty of Medicine and Surgery, University of Malta, MSD 2080 Msida, Malta;
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De Pessemier B, Grine L, Debaere M, Maes A, Paetzold B, Callewaert C. Gut-Skin Axis: Current Knowledge of the Interrelationship between Microbial Dysbiosis and Skin Conditions. Microorganisms 2021; 9:353. [PMID: 33670115 PMCID: PMC7916842 DOI: 10.3390/microorganisms9020353] [Citation(s) in RCA: 203] [Impact Index Per Article: 67.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/25/2021] [Accepted: 02/07/2021] [Indexed: 02/06/2023] Open
Abstract
The microbiome plays an important role in a wide variety of skin disorders. Not only is the skin microbiome altered, but also surprisingly many skin diseases are accompanied by an altered gut microbiome. The microbiome is a key regulator for the immune system, as it aims to maintain homeostasis by communicating with tissues and organs in a bidirectional manner. Hence, dysbiosis in the skin and/or gut microbiome is associated with an altered immune response, promoting the development of skin diseases, such as atopic dermatitis, psoriasis, acne vulgaris, dandruff, and even skin cancer. Here, we focus on the associations between the microbiome, diet, metabolites, and immune responses in skin pathologies. This review describes an exhaustive list of common skin conditions with associated dysbiosis in the skin microbiome as well as the current body of evidence on gut microbiome dysbiosis, dietary links, and their interplay with skin conditions. An enhanced understanding of the local skin and gut microbiome including the underlying mechanisms is necessary to shed light on the microbial involvement in human skin diseases and to develop new therapeutic approaches.
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Affiliation(s)
- Britta De Pessemier
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (B.D.P.); (M.D.); (A.M.)
| | - Lynda Grine
- Department of Head & Skin, Ghent University, Corneel Heymanslaan 10, 9000 Ghent, Belgium;
| | - Melanie Debaere
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (B.D.P.); (M.D.); (A.M.)
| | - Aglaya Maes
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (B.D.P.); (M.D.); (A.M.)
| | | | - Chris Callewaert
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (B.D.P.); (M.D.); (A.M.)
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13
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Wark KJL, Cains GD. The Microbiome in Hidradenitis Suppurativa: A Review. Dermatol Ther (Heidelb) 2021; 11:39-52. [PMID: 33244661 PMCID: PMC7859000 DOI: 10.1007/s13555-020-00465-w] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION Hidradenitis suppurativa (HS) is a chronic autoinflammatory skin disease. It is characterised by the development of abscesses and nodules in intertriginous anatomical sites. Whilst it is now recognised as an autoinflammatory condition rather than an infective disease, bacteria are implicated in disease pathogenesis. METHODS We performed a search of the literature from inception to 12 August 2020 using the search terms "hidradenitis suppurativa", "Verneuil's disease", "acne inversa", "microbiome", "bacteriology" and "microbiology". Studies were included if they assessed the cutaneous, gut or oral bacteria, bacteriology or microbiome in hidradenitis suppurativa. RESULTS Twenty-one studies examining the cutaneous microbiome and two studies examining the gastrointestinal microbiome in HS were identified. No studies examining the oral microbiome in HS were identified. A total of 972 patients and 46 healthy controls were included across studies examining the cutaneous microbiome. A total of 100 patients and 36 controls were included across both gut microbiome studies. Coagulase-negative Staphylococcus, anaerobes such as Porphyromonas and Prevotella, and Staphylococcus aureus species were commonly encountered organisms across the included cutaneous microbiome studies. The studies examining the gut microbiome were limited, with one small study demonstrating an alteration in the gut microbiome composition compared to controls. The other study found no alteration to the gut microbiome in patients with HS compared to those with inflammatory bowel disease (IBD) and HS, and IBD and/or psoriasis. CONCLUSION Research should be undertaken into the oral microbiome in HS. Further research should be undertaken examining the cutaneous and gut microbiome in HS, and its relationship with documented co-morbidities. Additionally, metagenomics-focused studies may help identify the relationship between microorganisms and host, and this may shed light on new pathways of disease pathogenesis. This may help identify potential future therapeutic targets.
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Affiliation(s)
- Kirsty J L Wark
- Department of Dermatology, Liverpool Hospital, Sydney, Australia.
- School of Medicine, University of New South Wales, Sydney, Australia.
| | - Geoffrey D Cains
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
- School of Medicine, University of New South Wales, Sydney, Australia
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14
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Sherman S, Tzur Bitan D, Kridin K, Pavlovsky L, Hodak E, Cohen AD. Hidradenitis suppurativa is associated with hypothyroidism and hyperthyroidism: a large-scale population-based study. Int J Dermatol 2020; 60:321-326. [PMID: 33241580 DOI: 10.1111/ijd.15319] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/07/2020] [Accepted: 10/29/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND Hidradenitis suppurativa (HS) is a chronic inflammatory disease involving the skin bearing apocrine glands. There are numerous comorbidities and associated diseases among patients with HS. The association of HS and thyroid abnormalities is equivocal. We aimed to explore whether HS is associated with thyroid disorders. METHODS In this cross-sectional large-scale population-based study in Israel, patients with a validated diagnosis of HS were matched at a proportion of 1:5 with age- and gender-matched healthy controls without HS. A cross-checking for HS diagnosis by International Classification of Diseases, ninth revision (ICD-9) coding, and hyperthyroidism and hypothyroidism by ICD-9 coding was performed. Demographic and exposure covariates were identified. Univariate and multivariate logistic regressions were utilized to establish the association of HS with thyroid disorders. RESULTS Study participants included 4,191 HS patients and 20,941 controls. The average age of patients was 39.7 years old, and 61.8% were female. 53.4% of HS patients and 13.5% of controls (P < 0.001) were smokers. Odds ratios (ORs) for hypothyroidism and hyperthyroidism in HS were 2.91 (95% confidence interval [CI] 2.48-3.40) and 2.25 (95% CI 1.55-3.28), respectively (P < 0.001 for both). While the association of HS with hypothyroidism was maintained across genders and all age groups, and remained positive after controlling for smoking status, the association with hyperthyroidism remained positive only among females, middle-aged patients, and nonsmokers. CONCLUSION HS is independently associated with hypothyroidism. The association of HS with hyperthyroidism held significance only in limited subgroups. Smoking status is a major modifier, mainly in the association of HS with hyperthyroidism.
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Affiliation(s)
- Shany Sherman
- Division of Dermatology, Rabin Medical Center (Beilinson Hospital), Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Dana Tzur Bitan
- Department of Behavioral Sciences, Ariel University, Ariel, Israel.,Shalvata Mental Health Center, affiliated with the Sackler School of Medicine, Tel Aviv University, Hod Hasharon, Israel
| | - Khalaf Kridin
- Lubeck Institute of Experimental Dermatology, Lubeck, Germany
| | - Lev Pavlovsky
- Division of Dermatology, Rabin Medical Center (Beilinson Hospital), Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Emmilia Hodak
- Division of Dermatology, Rabin Medical Center (Beilinson Hospital), Petah Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Arnon D Cohen
- Department of Quality Measurements and Research, Chief Physician Office, Clalit Health Services, Tel Aviv, Israel.,Siaal Research Center for Family Medicine and Primary Care, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel
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15
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Williams SC, Frew JW, Krueger JG. A systematic review and critical appraisal of metagenomic and culture studies in hidradenitis suppurativa. Exp Dermatol 2020; 30:1388-1397. [PMID: 32614993 DOI: 10.1111/exd.14141] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/11/2020] [Accepted: 06/25/2020] [Indexed: 12/15/2022]
Abstract
Hidradenitis suppurativa (HS), also known as acne inversa, is a chronic inflammatory skin disease with still largely unknown pathogenesis. While infectious organisms have been identified in lesions of the disease since the 1980s, questions remain over the role that bacteria and microbiome play. Recent studies using 16S ribosomal RNA gene sequencing and larger culture-based studies have begun to paint a clearer picture of the microbial world of HS. With this systematic review, we summarize all the work that has been done to date in HS bacteriology, analyse potential pitfalls and limitations of the current studies, and address future directions of investigation. This systematic review attempted to collate and analyse all bacteriology studies done to date. This review was prospectively registered with PROSPERO (1670769) performed in line with the PRISMA checklist. Twenty two studies were identified comprising 862 individual HS patients for culture studies and 206 HS patients for 16S rRNA gene sequencing studies. Methodology tended to be varied, with different sampling, culturing and sequencing methods as well as amount of analysis and stratification of patients. Bacteria identified as elevated in HS lesions in sequencing studies as well as grown from HS lesions in culture studies are identified and discussed. These primarily included the anerobic Gram-negative bacilli Prevotella, Porphyromonas and Fusibacterium, the Gram-positive bacilli Corynebacterium, and the Gram-positive cocci Staphylococcus, Streptococcus and Parvimonas. Potential interactions, as well as work in other disease models with related bacteria are also discussed. Areas of further investigation include in vitro studies of interactions between bacteria and keratinocytes, gut and oral microbiome studies and deep sequencing studies for virulence and phage factors.
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Affiliation(s)
- Samuel C Williams
- Laboratory of Investigative Dermatology, Rockefeller University, New York, New York.,Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD Program, Weill Cornell Medical School, New York, New York
| | - John W Frew
- Laboratory of Investigative Dermatology, Rockefeller University, New York, New York
| | - James G Krueger
- Laboratory of Investigative Dermatology, Rockefeller University, New York, New York
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