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https://www.readbyqxmd.com/read/28280911/-physiology-of-the-scalp
#1
REVIEW
R Rukwied
BACKGROUND: Human scalp reveals a remarkable difference to hairy skin of other body regions. The structure of the scalp offers effective protection against water loss and contributes to thermoregulation due to significant vascularization. The scalp is innervated by the trigeminus nerve. OBJECTIVES: The majority of the population complain about "sensitive" scalp. However, sensory, regional, ethnic or pathologic parameters contributing to "sensitive" scalp are largely unknown...
March 9, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28226316/clinical-evidence-of-increase-in-hair-growth-and-decrease-in-hair-loss-without-adverse-reactions-promoted-by-the-commercial-lotion-ecohair%C3%A2
#2
María Rosario Alonso, Claudia Anesini
BACKGROUND/AIMS: Hair exerts protection, sensory functions, thermoregulation, and sexual attractiveness. Hair loss (alopecia) is caused by several diseases, drug intake, hormone imbalance, stress, and infections (Malassesia furfur). Drugs usually used in alopecia produce irreversible systemic and local side effects. An association of extracts of Coffea arabica and Larrea divaricata (ECOHAIR®) is successfully being commercialized in Argentina for hair growth. The aim of this study was to provide scientific support for the efficacy and innocuousness of ECOHAIR® in patients with noncicatricial alopecia during a 3-month treatment...
2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28183164/estrogenic-activity-of-zinc-pyrithione-an-in-vivo-and-in-vitro-study
#3
Seung Jun Kwack, Kyung Sik Yoon, Nam Hee Youn, Hyun Gyung Gu
Objectives: Zinc pyrithione is commonly used to prevent dandruff and seborrheic dermatitis. Many consumers are exposed daily to high doses of zinc pyrithione, causing serious concerns about its toxicity. The reproductive and developmental toxicities were previously reported in pregnant rats. However, the estrogenic activity of zinc pyrithione at varying degrees of exposure has been rarely studied. Thus, we performed an uterotrophic assay, E-screen assay, and gene expression profiling to assess the estrogenic activity of zinc pyrithione...
February 9, 2017: Environmental Health and Toxicology
https://www.readbyqxmd.com/read/28149788/prevalence-of-ocular-demodicosis-among-patients-at-tertiary-care-center-bangkok-thailand
#4
Ngamjit Kasetsuwan, Kitchaporn Kositphipat, Mathu Busayarat, Pawanrat Threekhan, Kanok Preativatanyou, Atchara Phumee, Padet Siriyasatien
AIM: To determine the prevalence of ocular demodicosis by both microscopic examination and molecular detection among patients at King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok. METHODS: One hundred individuals were enrolled in the study and were divided into five age groups. The meibomian gland dysfunction (MGD) score and qualities of cylindrical dandruff (CD) were also determined. Demodex mite infestations of eyelash samples were screened by both microscopic examination and semi-nested polymerase chain reaction (PCR)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28149170/effectiveness-of-five-antidandruff-cosmetic-formulations-against-planktonic-cells-and-biofilms-of-dermatophytes
#5
Renan Martins Dos Santos, Marcus Vinícius Dias-Souza
This study aimed to investigate the in vitro antifungal effectiveness of five different formulations against dandruff and ringworm dermatophytes. Candida albicans was also included in our assays. Fungal susceptibility tests were performed with planktonic cells and biofilms of reference strains. Microbiological and physicochemical quality parameters were assessed for all formulations. Our data indicated that the formulations were effective against the dermatophytes strains, and to our knowledge, the effectiveness of cosmetic formulations against fungal biofilms is shown for the first time...
February 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28111598/the-mpeg-pcl-copolymer-for-selective-fermentation-of-staphylococcus-lugdunensis-against-candida-parapsilosis-in-the-human-microbiome
#6
Ming-Shan Kao, Yanhan Wang, Shinta Marito, Stephen Huang, Wan-Zhen Lin, Jon A Gangoiti, Bruce A Barshop, Choi Hyun, Woan-Ruah Lee, James A Sanford, Richard L Gallo, Yuping Ran, Wan-Tzu Chen, Chun-Jen Huang, Ming-Fa Hsieh, Chun-Ming Huang
Many human skin diseases, such as seborrheic dermatitis, potentially occur due to the over-growth of fungi. It remains a challenge to develop fungicides with a lower risk of generating resistant fungi and non-specifically killing commensal microbes. Our probiotic approaches using a selective fermentation initiator of skin commensal bacteria, fermentation metabolites or their derivatives provide novel therapeutics to rein in the over-growth of fungi. Staphylococcus lugdunensis (S. lugdunensis) bacteria and Candida parapsilosis (C...
August 2016: Journal of microbial & biochemical technology
https://www.readbyqxmd.com/read/28094891/collapse-of-human-scalp-microbiome-network-in-dandruff-and-seborrheic-dermatitis
#7
Taehun Park, Hye-Jin Kim, Nu Ri Myeong, Hyun Gee Lee, Ilyoung Kwack, Johnhwan Lee, Beom Joon Kim, Woo Jun Sul, Susun An
No abstract text is available yet for this article.
January 17, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28057408/dithiocarbamates-effectively-inhibit-the-%C3%AE-carbonic-anhydrase-from-the-dandruff-producing-fungus-malassezia-globosa
#8
Daniela Vullo, Sonia Del Prete, Alessio Nocentini, Sameh M Osman, Zeid AlOthman, Clemente Capasso, Murat Bozdag, Fabrizio Carta, Paola Gratteri, Claudiu T Supuran
A series of dithiocarbamates (DTCs) was investigated for the inhibition of the β-class carbonic anhydrase (CAs, EC 4.2.1.1) from the fungal parasite Malassezia globosa, MgCA, a validated anti-dandruff drug target. These DTCs incorporate various scaffold, among which those of N,N-dimethylaminoethylenediamine, the aminoalcohols with 3-5 carbon atoms in their molecule, 3-amino-quinuclidine, piperidine, morpholine and piperazine derivatives, as well as phenethylamine and its 4-sulfamoylated derivative. Several DTCs resulted more effective in inhibiting MgCA compared to the standard sulfonamide drug acetazolamide (KI of 74μM), with KIs ranging between 383 and 6235nM...
February 1, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27939161/epidemiologic-analysis-of-a-sarcoid-outbreak-involving-12-of-111-donkeys-in-northern-italy
#9
Hans Abel-Reichwald, Edmund K Hainisch, Sophie Zahalka, Annunziata Corteggio, Giuseppe Borzacchiello, Barbara Massa, Luca Merlone, Lubna Nasir, Faith Burden, Sabine Brandt
Equine sarcoids develop upon bovine papillomavirus type 1 or 2 (BPV1, BPV2) infection in conjunction with trauma and represent the most common tumour disease in horses and other equids, including donkeys. In face of a sarcoid outbreak involving 12 of 111 donkeys and mules at the 'Rifugio degli Asinelli', a subsidiary charity organization of The Donkey Sanctuary, non-invasively collected sample material including crusts, dandruff, swabs and hair roots was collected from sarcoid-affected and 26 healthy donkeys, as well as dandruff from a grooming kit and tabanids caught from or in the vicinity of sarcoid patients...
November 30, 2016: Veterinary Microbiology
https://www.readbyqxmd.com/read/27909689/dysbiotic-bacterial-and-fungal-communities-not-restricted-to-clinically-affected-skin-sites-in-dandruff
#10
Renan C Soares, Pedro H Camargo-Penna, Vanessa C S de Moraes, Rodrigo De Vecchi, Cécile Clavaud, Lionel Breton, Antonio S K Braz, Luciana C Paulino
Dandruff is a prevalent chronic inflammatory skin condition of the scalp that has been associated with Malassezia yeasts. However, the microbial role has not been elucidated yet, and the etiology of the disorder remains poorly understood. Using high-throughput 16S rDNA and ITS1 sequencing, we characterized cutaneous bacterial and fungal microbiotas from healthy and dandruff subjects, comparing scalp and forehead (lesional and non-lesional skin sites). Bacterial and fungal communities from dandruff analyzed at genus level differed in comparison with healthy ones, presenting higher diversity and greater intragroup variation...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27882618/whole-genome-sequencing-analysis-of-the-cutaneous-pathogenic-yeast-malassezia-restricta-and-identification-of-the-major-lipase-expressed-on-the-scalp-of-patients-with-dandruff
#11
Minji Park, Yong-Joon Cho, Yang Won Lee, Won Hee Jung
Malassezia species are opportunistic pathogenic fungi that are frequently associated with seborrhoeic dermatitis, including dandruff. Most Malassezia species are lipid dependent, a property that is compensated by breaking down host sebum into fatty acids by lipases. In this study, we aimed to sequence and analyse the whole genome of Malassezia restricta KCTC 27527, a clinical isolate from a Korean patient with severe dandruff, to search for lipase orthologues and identify the lipase that is the most frequently expressed on the scalp of patients with dandruff...
March 2017: Mycoses
https://www.readbyqxmd.com/read/27764219/study-on-the-cytotoxic-genotoxic-and-clastogenic-potential-of-attalea-phalerata-mart-ex-spreng-oil-pulp-in-vitro-and-in-vivo-experimental-models
#12
Fernando Freitas de Lima, Sara Emilia Lima Tolouei Menegati, Giseli Karenina Traesel, Flávio Henrique Souza de Araújo, Caroline Honaiser Lescano, Sara Moraes Peixoto, Felipe Ariel Mao Silva, Silvia Cristina Heredia Vieira, Maria do Carmo Vieira, Silvia Aparecida Oesterreich
Attalea phalerata Mart. ex Spreng. (Arecaceae), popularly known as "bacuri", is used in Brazilian folk medicine. Its oil is used orally to relieve pulmonary congestion and joint pain. In topical applications, it is applied as an effective hair tonic and anti-dandruff. The in natura pulp and its nuts are used as food because of its nutritional value. Despite its use in folk medicine, there is a lack of data regarding its in vivo/in vitro cytotoxic/genotoxic and clastogenic effects. Therefore, in this study, we evaluated the cytotoxic, genotoxic and clastogenic effects of Attalea phalerata Mart...
2016: PloS One
https://www.readbyqxmd.com/read/27740540/domestic-shower-hose-biofilms-contain-fungal-species-capable-of-causing-opportunistic-infection
#13
John Moat, Athanasios Rizoulis, Graeme Fox, Mathew Upton
The domestic environment can be a source of pathogenic bacteria. We show here that domestic shower hoses may harbour potentially pathogenic bacteria and fungi. Well-developed biofilms were physically removed from the internal surface of shower hoses collected in four locations in England and Scotland. Amplicon pyrosequencing of 16S and 18S rRNA targets revealed the presence of common aquatic and environmental bacteria, including members of the Actinobacteria, Alphaproteobacteria, Bacteroidetes and non-tuberculous Mycobacteria...
October 2016: Journal of Water and Health
https://www.readbyqxmd.com/read/27699522/eyelid-cleansing-with-ointment-for-obstructive-meibomian-gland-dysfunction
#14
MULTICENTER STUDY
Minako Kaido, Osama M A Ibrahim, Motoko Kawashima, Reiko Ishida, Enrique A Sato, Kazuo Tsubota
PURPOSE: To investigate the efficacy of eyelid margin cleansing with ofloxacin ophthalmic ointment in obstructive meibomian gland dysfunction (MGD) patients. METHODS: Thirty-one eyes of 31 patients diagnosed with obstructive MGD were enrolled. All subjects were instructed to rub the eyelid edge with ofloxacin eye ointment once daily prior to bathing. Lid margin abnormalities, meibum properties, and tear stability were observed before and 3 months after ointment treatment...
January 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/27600510/itraq-based-quantitative-proteomics-of-stratum-corneum-of-dandruff-scalp-reveals-new-insights-into-its-aetiology-and-similarities-with-atopic-dermatitis
#15
Nükhet Cavusoglu, Caroline Delattre, Mark Donovan, Sylvie Bourassa, Arnaud Droit, Charles El Rawadi, Roland Jourdain, Dominique Bernard
The study aimed at detecting differentially expressed proteins in the stratum corneum of dandruff versus non-dandruff scalps to better understand dandruff aetiology. iTRAQ-based quantitative proteomic analysis revealed a total of 68 differentially expressed biomarkers. A detailed analysis of their known physiological functions provided new insights into the affected metabolic pathways of a dandruff scalp. Dandruff scalp showed (1) profound changes in the expression and maturation of structural and epidermal differentiation related proteins, that are responsible for the integrity of the skin, (2) altered relevant factors that regulate skin hydration, and (3) an imbalanced physiological protease-protease inhibitor ratio...
November 2016: Archives of Dermatological Research
https://www.readbyqxmd.com/read/27541567/anti-acne-anti-dandruff-and-anti-breast-cancer-efficacy-of-green-synthesised-silver-nanoparticles-using-coriandrum-sativum-leaf-extract
#16
Palanivel Sathishkumar, Johnson Preethi, Raji Vijayan, Abdull Rahim Mohd Yusoff, Fuad Ameen, Sadhasivam Suresh, Ramasamy Balagurunathan, Thayumanavan Palvannan
In this present investigation, AgNPs were green synthesised using Coriandrum sativum leaf extract. The physicochemical properties of AgNPs were characterised using UV-visible spectrophotometer, field emission scanning microscopy/energy dispersive X-ray (FESEM/EDX), Fourier transformed infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) analysis. Further, in vitro anti-acne, anti-dandruff and anti-breast cancer efficacy of green synthesised AgNPs were assessed against Propionibacterium acnes MTCC 1951, Malassezia furfur MTCC 1374 and human breast adenocarcinoma (MCF-7) cell line, respectively...
October 2016: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/27497434/%C3%AE-endorphin-enhances-the-phospholipase-activity-of-the-dandruff-causing-fungi-malassezia-globosa-and-malassezia-restricta
#17
Prasanna Honnavar, Arunaloke Chakrabarti, Ghandam S Prasad, Pankaj Singh, Sunil Dogra, Shivaprakash M Rudramurthy
β-Endorphin is known to stimulate phospholipase production by Malassezia pachydermatis during canine dermatoses. The role of β-endorphin in Malassezia infection in humans is not well studied. The present study compares the influence of β-endorphin on Malassezia globosa and Malassezia restricta isolated from patients with seborrhoeic dermatitis/dandruff (SD/D) and healthy controls. Malassezia isolates (five each of the two species from patients and healthy controls) were grown on modified Dixon's agar with or without 100 nmol/L β-endorphin...
August 5, 2016: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/27447348/chemical-composition-and-biological-activity-of-centaurea-baseri-new-species-from-turkey
#18
Yavuz Bülent Köse, Gökalp İşcan, Fatih Göger, Gülşen Akalın, Betül Demirci, Kemal Hüsnü Can Başer
The genus Centaurea L. is one of the largest and important genera of Asteraceae family. Centaurea species have been widely used as herbal remedies in folk medicine for their antidandruff, antidiarrheic, antirheumatic, anti-inflammatory, choleretic, diuretic, digestive, stomachic, astringent, antipyretic, cytotoxic, and antibacterial properties. Centaurea baseri Kose & Alan is a recently described local endemic species in Turkey and this is the first study on the chemical composition and bioactivity of its hydrodistilled essential oil and the crude extract...
October 2016: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/27290692/n-nitrosulfonamides-a-new-chemotype-for-carbonic-anhydrase-inhibition
#19
Alessio Nocentini, Daniela Vullo, Gianluca Bartolucci, Claudiu T Supuran
A series of N(1)-substituted aromatic sulfonamides was obtained by applying a selective sulfonamide nitration synthetic strategy leading to Ar-SO2NHNO2 derivatives which were investigated as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors. Two human (h) hCA isoforms, the cytosolic hCA II and the transmembrane hCA IX, in addition to the fungal enzyme from Malassezia globosa, MgCA, were included in the study. Most of the new compounds reported selectively inhibited hCA IX over hCA II and at the same time showed effective MgCA inhibitory properties, with KIs ranging between 0...
August 15, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27252746/detection-of-melorheostosis-in-a-young-lady-with-upper-limb-pain-on-three-phase-bone-scintigram-spect-ct
#20
Aamna Hassan, Madeeha Khalid, Saquib Khawar
Melorheostosis is a benign, noninheritable bone dysplasia characterized by its classic radiographic features of dense, flowing hyperostosis. It frequently affects one limb, usually the lower extremity and rarely the axial skeleton. A 26-year-old lady with obesity, polycystic ovarian syndrome and scalp dandruff presented with a long standing history of upper extremity pain and inability to adduct the arm completely. A Tc-99m MDP whole body and SPECT/CT scan performed for suspected fibrous dysplasia showed increased radiotracer uptake in densely sclerotic humeral and radial melorheostosis...
January 2016: Clinical Cases in Mineral and Bone Metabolism
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