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Dermato-endocrinology

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https://www.readbyqxmd.com/read/29707102/the-pivotal-role-of-inflammation-in-scar-keloid-formation-after-acne
#1
Chao Shi, Jianyu Zhu, Degang Yang
Most keloids are clinically observed as solid nodules or claw-like extensions. However, they appear hypoechoic on ultrasound images and are therefore easily confused with liquid features such as blood or vessels. The pathological manifestations of typical keloids also include prominent, thick blood vessels. The existing classification of scars fails to reflect the natural history of keloids. The outer characteristics of a typical keloid include bright red hyperplasia with abundant vessels, suggesting the importance of vascular components in the process of scar formation and prompting consideration of the role of inflammation in the development of granular hyperplasia...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29657665/environmental-determinants-of-previtamin-d-synthesis-in-the-united-arab-emirates
#2
Adam J Buckley, Zara Hannoun, Nader Lessan, Michael F Holick, Maha T Barakat
Despite abundant sunshine throughout the year, vitamin D deficiency is endemic in the UAE. Solar radiation within the UVB range of the spectrum is required for the photosynthesis of previtamin D3 in the skin. Atmospheric transmission of UVB is strongly influenced by atmospheric conditions and solar zenith angle. We investigated the effects of diurnal and seasonal variation on the availability of sufficient UVB radiation for adequate previtamin D3 synthesis using an established in vitro model. Borosilicate ampoules of 7-dehydrocholesterol, the precursor of previtamin D3, in ethanol (50 µg/mL) were exposed to direct sunlight in an urban area of Abu Dhabi, at one hourly intervals between 0800 and 1700, on one day of each month over a period of one year...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29581820/editorial-the-3rd-international-conference-on-sebaceous-gland-acne-rosacea-and-related-disorders
#3
EDITORIAL
Christos C Zouboulis, Qiang Ju, Lei-Hong Flora Xiang
No abstract text is available yet for this article.
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29511428/multiple-fractures-in-infants-who-have-ehlers-danlos-hypermobility-syndrome-and-or-vitamin-d-deficiency-a-case-series-of-72-infants-whose-parents-were-accused-of-child-abuse-and-neglect
#4
M F Holick, A Hossein-Nezhad, F Tabatabaei
Objective : To increase the level of awareness that Ehlers-Danlos/hypermobility syndrome (EDS) and vitamin D deficiency are associated with infantile fragility fractures and radiologic features that may be mistakenly reported to be caused by non-accidental trauma due to Child Abuse and Neglect (CAN). Patients and Methods : We constructed a case series, the largest to date, of infants with EDS who were vitamin D sufficient, insufficient and deficient and infants without EDS but with documented vitamin D deficiency and radiologic evidence of rickets who presented with multiple fractures originally diagnosed as being non-accidental and caused by child abuse...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29497466/adt-g-as-a-promising-biomarker-for-peripheral-hyperandrogenism-in-adult-female-acne
#5
Marco Rocha, Karina H M Cardozo, Valdemir M Carvalho, Edieia Bagatin
Acne vulgaris is a chronic inflammatory disease that affects the pilosebaceous unit. Recent studies have shown an increasing number of cases of acne in adult women. These cases are predominantly normoandrogenic and present some clinical differences compared to adolescent acne. Local glandular metabolism turns some weak hormonal precursors into more active substances that increase the production of sebum, leaving these areas more prone to an increasing the colonization by Propionibacterium acnes (P. acnes). Our objective was to evaluate the usefulness of an androgenic metabolite as an adult female acne biomarker...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29485142/cleanser-use-could-decrease-numbers-of-demodex-folliculorum-in-mild-to-moderate-acne-patients
#6
Chao Yuan, Shu-Li Zheng, Ya Feng Ma, Juliandri Philippe, Humbert Philippe
Objective: This study was to verify if the skin cleanser could help decrease the infection ratio of Demodex Folliculorum in acne patients. Methods: 132 participants with mild to moderate vulgaris acne participated in this monocentric, prospective, double-blind study. Dermatologists grading and Standardized Skin Surface Biopsy were performed in baseline and after using cleanser only 7 d later. Results: There was no significant difference between the 2 times for each type of acne, but the number of Demodex Folliculorum was significantly decreased compared with baseline...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484105/local-cortisol-activation-is-involved-in-egf-induced-immunosuppression
#7
Sayaka Matsumura, Mika Terao, Satoshi Itami, Ichiro Katayama
The major effects of the epidermal growth factor receptor (EGFR) signalling pathway on keratinocytes are cell proliferation, cell differentiation, and wound healing. In addition to these effects, an immunosuppressive effect of EGFR signalling has been reported. However, the precise mechanism of immunosuppression by EGFR signalling is not well understood. In this study, we clarified the involvement of increased local cortisol activation in EGFR signalling-induced immunosuppression in keratinocytes. EGF treatment up-regulated the expression of 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) and supernatant cortisol levels in a dose-dependent manner in keratinocytes...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484104/thyroid-autoimmunity-in-female-post-adolescent-acne-a-case-control-study
#8
Thomas Jonathan Stewart, Carl Bazergy
No abstract text is available yet for this article.
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484103/cutaneous-manifestations-of-diabetic-peripheral-neuropathy
#9
S N Dogiparthi, K Muralidhar, K G Seshadri, S Rangarajan
There is a rise in number of people diagnosed with Diabetes Mellitus. The incidence is rising in modern Indian society because of Industrial development and drastically changing lifestyles. Diabetic neuropathies are microvascular disorders that are usually associated with the duration of Diabetes. Among the various forms, the most common is Diabetic Peripheral Neuropathy. The disease if neglected leads to chronic ulcer formation leading to amputations frequently. Hence the aim of this study is to document the early cutaneous changes and create an early awareness in the importance of controlling Diabetes...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484102/differential-biological-effects-of-dehydroepiandrosterone-dhea-between-mouse-b16f10-and-human-melanoma-blm-cell-lines
#10
Kumud Joshi, Sherif S Hassan, Pandurangan Ramaraj
Dehydroepiandrosterone (DHEA) is a weak androgen and had been shown to have anti-cancer, anti-adipogenic and anti-inflammatory effects on mouse and other rodent models, but not on humans, suggesting a systemic level difference between mouse and human. Our previous study on DHEA biological functions involving a variety of cell lines, suggested that the functional differences between mouse and human existed even at the cellular level. Hence, using mouse and human melanoma cell models, in-vitro effects of DHEA on cell growth, mechanism of cell death and mechanism of DHEA action were studied...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484101/untangling-the-most-probable-role-for-vitamin-d-3-in-autism
#11
Dianne E Godar, Stephen J Merrill
Recent studies indicate an important role for vitamin D3 in autism spectrum disorder (ASD), although its mechanism is not completely understood. The most puzzling aspect of ASD is that identical twins, who share identical DNA, do not have 100% concordance rates (∼88% for identical and ∼31% for fraternal twins). These findings provide major clues into the etiology: ASD must involve an environmental factor present in the prenatal milieu that both identical twins are not always exposed to because they do not always share it (i...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484100/sebaceous-immunobiology-is-orchestrated-by-sebum-lipids
#12
REVIEW
Marianna Lovászi, Andrea Szegedi, Christos C Zouboulis, Dániel Törőcsik
The major role of sebaceous glands in mammals is to produce sebum, which coats the epidermis and the hair providing waterproofing, thermoregulation and photoprotection. However, as the need for these functions decreased along the evolutionary changes in humans, a relevant question has been raised: are sebaceous glands and sebum the remnants of our mammalian heritage or do they have overtaken a far more complex role in human skin biology? Trying to provide answers to this question, this review introduces the evolving field of sebaceous immunobiology and puts into the focus the pathways that sebum lipids use to influence the immune milieu of the skin...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484099/sunbeds-with-uvb-radiation-can-produce-physiological-levels-of-serum-25-hydroxyvitamin-d-in-healthy-volunteers
#13
Samantha M Kimball, Jasmine Lee, Reinhold Vieth
Vitamin D3 is produced in the skin in response to UVB irradiation, from either sun exposure or UVB sunbeds. The objective of the current study was to characterize serum 25(OH)D response to regular sunbed use from several lamp outputs following their respective time exposure recommendations. There were three groups that tanned over 12 weeks during the winter months in dedicated sunbeds based on lamp outputs (100 W and 160 W low pressure fluorescent and 700 W high pressure filtered metal halide lamps) and a control group provided serum 25(OH)D samples at baseline and end-of-study...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484098/recent-advances-in-the-endocrinology-of-the-sebaceous-gland
#14
REVIEW
Attila G Szöllősi, Attila Oláh, Tamás Bíró, Balázs István Tóth
The sebaceous gland, long considered an evolutionary relic with little-to-no physiological relevance in humans, has emerged in recent decades as a key orchestrator and contributor to many cutaneous functions. In addition to the classical physico-chemical barrier function of the skin against constant environmental challenges, a more novel, neuro-immune modulatory role has also emerged. As part of the complex intercellular communication network of the integumentary system, the sebaceous gland acts as a "relay station" in the skin for many endocrine factors...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484097/clinical-and-histopathological-characteristics-in-patients-with-scarring-folliculitis-type-of-acne-inversa
#15
Lingyi Lu, Huiying Lai, Zhanyan Pan, Tingting Hu, Xiaoxiao Hou, Ke Cao, Qiang Ju
Objective : This study was designed to study the clinical and histopathological characteristics of patients with the scarring folliculitis type acne inversa in Chinese population. Methods : A total of 21 patients with acne inversa and 6 controls without known dermatological disease were recruited from outpatient department of dermatology and orthopedic surgery. Two-millimeter punch biopsies were taken from 8 patients with acne inversa and 6 controls, fixed in formalin, embedded in paraffin and stained with haematoxylin and eosin prior to histopathological analysis...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484096/rosacea-epidemiology-pathogenesis-and-treatment
#16
REVIEW
Barbara M Rainer, Sewon Kang, Anna L Chien
Rosacea is a chronic relapsing inflammatory skin disease with a high prevalence among adults of Northern European heritage with fair skin. Symptoms present in various combinations and severity, often fluctuating between periods of exacerbation and remission. Based on morphological characteristics, rosacea is generally classified into four major subtypes: erythematotelangiectatic, papulopustular, phymatous, and ocular. Diverse environmental and endogenous factors have been shown to stimulate an augmented innate immune response and neurovascular dysregulation; however, rosacea's exact pathogenesis is still unclear...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484095/cutaneous-fungal-microbiome-malassezia-yeasts-in-seborrheic-dermatitis-scalp-in-a-randomized-comparative-and-therapeutic-trial
#17
C S L Kamamoto, A S Nishikaku, O F Gompertz, A S Melo, K M Hassun, E Bagatin
Malassezia spp in skin microbiome scalp has been implicated in seborrheic dermatitis pathogenesis. Thus, treatment based in antifungal combined to topical keratolitic agents have been indicated as well as oral isotretinoin as it reduces the sebum production, glandular's size and possesses anti-inflammatory properties. This randomized, comparative and therapeutic trial aimed toper form the genotypic identification of Malassezia species before and after low-dose oral isotretinoin or topical antifungal treatments for moderate to severe seborrhea and/or seborrheic dermatitis on scalp...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484094/the-effect-on-acne-quality-of-life-of-topical-azelaic-acid-15-gel-versus-a-combined-oral-contraceptive-in-adult-female-acne-a-randomized-trial
#18
Marco Rocha, Adriana Sanudo, Edileia Bagatin
Acne vulgaris is a chronic inflammatory disease that affects the pilosebaceous unit. Recent studies have shown an increasing number of cases of acne in adult women. These cases are predominantly normoandrogenic and have show some clinical differences compared to adolescent acne. In addition to the physical aspects, acne has a strong psychosocial impact and can lead to the onset of signs and symptoms of depression, such as anger. Our objective was to evaluate the effect on acne-specific quality of life in adult women treated with topical azelaic acid versus a combined oral contraceptive...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484093/modulation-of-toll-like-receptor-2-on-sebaceous-gland-by-the-treatment-of-adult-female-acne
#19
Marco A D Rocha, Lilia R S Guadanhim, Adriana Sanudo, Edileia Bagatin
Adult female acne is a chronic inflammatory, immune-mediated disease that affects the pilosebaceous unit in women in their 20s to 40s, and is considered different from acne vulgaris. Propionibacterium acnes is recognized by TLR-2, resulting in activation of this receptor and an inflammatory response through the NFκ B pathway. This therapeutic, interventional, open, randomized, evaluator-blinded and comparative trial included 38 adult women with moderate facial acne and 10 age-matched controls, all aged between 26 and 44 years...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/29484092/seeking-new-acne-treatment-from-natural-products-devices-and-synthetic-drug-discovery
#20
REVIEW
Ji Hoon Yang, Ji Young Yoon, Hyuck Hoon Kwon, Seonguk Min, Jungyoon Moon, Dae Hun Suh
Despite lots of research on the pathogenesis of acne, the development of new therapeutic agents is still stagnant. Conventional agents which target multiple pathological processes have some serious side effects and this makes seeking new treatment options important for treating acne. As new therapeutic options, researchers are focusing on natural products, synthetic drugs and devices. From natural products, epigallocatechin-3 gallate, lupeol, cannabidiol and Lactobacillus fermented Chamaecyperis obtusa were reported to be possible candidates for novel drugs, targeting multiple pathogenic factors...
2017: Dermato-endocrinology
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