Nilhan Ayse Atsu

Nilhan Ayse Atsu


Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 June 2025 in Gels
Verified
Journal Article
Open access
PDF file
AKAhmet Arif KURT
Ahmet Arif KURT
Bashar IbrahimBashar Ibrahim
Bashar Ibrahim
HÇHarun Çınar
Harun Çınar
NANilhan Ayse Atsu
Nilhan Ayse Atsu
EBErtugrul Osman Bursalioglu
Ertugrul Osman Bursalioglu
IAISMAIL ASLAN
ISMAIL ASLAN
Hypericum perforatum L. (H.P.), a plant renowned for its wound-healing properties, was investigated for antioxidant/antimicrobial efficacy, toxicological safety, and in vivo wound-healing effects in this research to develop and characterize novel nanoemulsion hydrogel (NG) formulations. NG were prepared via emulsion diffusion–solvent evaporation and polymer hydration using Cremophor RH40 and Ultrez 21/30. A D-optimal design optimized oil/surfactant ratios, considering particle size, PDI, and drug loading. Antioxidant activity was tested via DPPH, ABTS+, and FRAP. Toxicological assessment followed HET-CAM (ICH-endorsed) and ICCVAM guidelines. The optimized NG-2 (NE-HPM-10 + U30 0.5%) demonstrated stable and pseudoplastic flow, with a particle size of 174.8 nm, PDI of 0.274, zeta potential of −23.3 mV, and 99.83% drug loading. Release followed the Korsmeyer–Peppas model. H.P. macerates/NEs showed potent antioxidant activity (DPPH IC50: 28.4 µg/mL; FRAP: 1.8 mmol, Fe2+/g: 0.3703 ± 0.041 mM TE/g). Antimicrobial effects against methicillin-resistant S. aureus (MIC: 12.5 µg/mL) and E. coli (MIC: 25 µg/mL) were significant. Stability studies showed no degradation. HET-CAM tests confirmed biocompatibility. Histopathology revealed accelerated re-epithelialization/collagen synthesis, with upregulated TGF-β1. The NG-2 formulation demonstrated robust antioxidant, antimicrobial, and wound-healing efficacy. Enhanced antibacterial activity and biocompatibility highlight its therapeutic potential. Clinical/pathological evaluations validated tissue regeneration without adverse effects, positioning H.P.-based nanoemulsions as promising for advanced wound care.

1 January 2023 in Dermatologic Therapy
Verified
Journal Article
Open access
PDF file
NANilhan Ayse Atsu
Nilhan Ayse Atsu
CECansu Ekinci-Aslanoglu
Cansu Ekinci-Aslanoglu
BKBusra Kantarci-Demirkiran
Busra Kantarci-Demirkiran
NCNAZLI CAF
NAZLI CAF
FNFadime Nuhoglu
Fadime Nuhoglu
Background/Objective. Platelet‐rich plasma (PRP) has a widespread use in various indications including dermatological conditions. Injectable platelet‐rich fibrin on the other hand is prepared without anticoagulants and seems to have a sustained action. This study aimed to compare PRP and PRF injection treatments for facial skin rejuvenation in terms of efficacy, patient satisfaction, and side effects. Patients and Methods. Patients who received facial intradermal injections of PRP or PRF for skin rejuvenation were included in this study. Patients received three injections one month apart and evaluated at follow‐up visits for cosmetic results using a high‐resolution UVA‐light video camera and a surface evaluation software at three regions (frontal, nasolabial, and canthal) as well as for patient satisfaction and side effects. Results. A significant marginal superiority of PRF over PRP was only evident for some canthal cosmetic parameters (canthal smoothness and wrinkles); however, the two groups did not differ in terms of other cosmetic regional parameters. For canthal smoothness, the difference was significant at three months. The two groups did not differ in terms of side effects, pain, and patient satisfaction. Conclusion. This study obtained slightly better outcomes with PRF injections when compared to PRP for facial rejuvenation only at canthal region and only at three months, which disappeared later during the treatment. PRF may represent a viable alternative to PRP for that indication owing to its easier preparation, absence of anticoagulants, and possibly its sustained effect. Further large studies are warranted.

31 August 2021 in The International Journal of Lower Extremity Wounds
Verified
Journal Article
Closed access
PDF file
NANilhan Ayse Atsu
Nilhan Ayse Atsu
ZTZeynep Tosuner
Zeynep Tosuner
TBTayfun Bilgic
Tayfun Bilgic
The study aimed to evaluate the efficiency of pomegranate (Punica granatum) seed oil in wound healing in excised rats. Sixteen female young Wistar Albino Rats weighing approximately 300 to 320 g were randomly divided into 2 groups as the treatment (=pomegranate seed oil group) and control groups in this experiment. Six different wounds 1 cm apart from the midline and each other were formed with a 6 mm punch biopsy instrument. Three wounds were left open (open wound group) whereas 3 wounds were sutured with 4/0 vicryl (closed wound group). Punica granatum seed oil treatment was administered topically to the treatment group, both to open and closed wounds, once a day for 14 days. Parameters for healing were evaluated. Histopathologic examination was performed for the investigation of inflammation, neovascularization, granulation, and fibroblast generation in addition to serologic (enzyme-linked immunosorbent assay) evaluation of rat malondialchehyche, rat glutathione peroxidase, and rat superoxide dismutase. PeriScan PIM 3 System Laser Doppler Blood Perfusion Imager was used for the calculation of blood perfusion. There was a statistically significant difference between inflammation and neovascularization levels and group type on the 14th day in open wounds(P < .05). On the 21st day, the granulation tissue level in the closed wound group was found to be higher in the pomegranate group (P = 0.000).The results showed that PSE oil is partially effective, although it is not effective in every parameter examined, in the treatment of excised wounds in rats and may be suitable for clinical treatment in humans but large controlled studies are needed.

25 May 2022 in Mycoses
Verified
Journal Article
Open access
NANilhan Ayse Atsu
Nilhan Ayse Atsu
ÇEÇağrı Ergin
Çağrı Ergin
NCNAZLI CAF
NAZLI CAF
ZTZafer Türkoğlu
Zafer Türkoğlu
ADAylin Döğen
Aylin Döğen
MIMacit İlKit
Macit İlKit
Background: Lipophilic basidiomycetous yeasts of the Malassezia genus can cause various skin diseases, such as seborrheic dermatitis, pityriasis versicolor, folliculitis and atopic dermatitis, and even life‐threatening fungemia in newborns and immunocompromised individuals. Routine mycological media used in clinical practice do not contain sufficient lipid ingredients required for the growth of Malassezia species. A recently developed medium, FastFung agar, is promising for culturing fastidious fungal species.Methods: In this study, we compared FastFung agar and mDixon agar for culturing Malassezia species from nasolabial fold and retroauricular specimens of 83 healthy individuals and 187 and 57 patients with acne vulgaris and seborrheic dermatitis, respectively.Results: Malassezia species were identified using conventional tests and matrix‐assisted laser desorption/ionisation mass spectrometry. In total, 96 of 654 samples (14.6%) contained Malassezia species. The total isolation rate was significantly higher in patients with seborrheic dermatitis (40.4%) than in healthy volunteers (21.7%; p < .05), and the rate of M. furfur isolation was significantly higher for patients with acne vulgaris (13.9%) and seborrheic dermatitis (24.6%) than for healthy individuals (1.5%; p < .05). FastFung agar was superior to mDixon agar in M. furfur isolation (p = .004) but showed similar performance in the case of non‐M. furfur species (p > .05). Among cultured Malassezia species, perfect agreement between mDixon agar and FastFung agar was found only for M. globosa (κ = 0.90).Conclusion: Our results indicate that FastFung agar favours the growth of Malassezia species and should be useful in clinical mycology laboratories.

29 April 2023 in Dermatology Practical & Conceptual
Verified
Journal Article
Open access
PDF file
DÖDefne Özkoca
Defne Özkoca
NCNAZLI CAF
NAZLI CAF
NYNazan Nur Alacagöz Yılmaz
Nazan Nur Alacagöz Yılmaz
TUTugba Kevser Uzuncakmak
Tugba Kevser Uzuncakmak
AÖAyşenur Özdil
Ayşenur Özdil
NANilhan Ayse Atsu
Nilhan Ayse Atsu
Introduction: Systemic isotretinoin is the most effective treatment modality in acne vulgaris; however, both patients and physicians hesitate to use it due its side effects. Objectives: The aim of this study is to determine the prevalence of fatigue, myalgia and low back pain during systemic isotretinoin treatment; and to determine their relationship with age, gender, treatment duration, daily isotretinoin dose and isotretinoin-naiveness of the patient. Methods: This is a cross sectional study including the acne vulgaris patients, aged between 13 to 40 years, who have at least received one month of oral isotretinoin treatment. Patients were questioned for side effects during their follow-up visits; a physical therapy and rehabilitation specialist further evaluated patients complaining of low back pain. Results: Fatigue was reported by 4.4% of the patients, myalgia by 2.8% and low back pain by 25% of the patients; 2.2% had inflammatory and 22.8% had mechanical low back pain. None of the patients had sacroiliitis. All the side effects that were examined were found to be independent of age, gender, isotretinoin dosage (mg/kg/day), treatment duration and isotretinoin-naiveness. Conclusions: The side effects are not as common as feared; thus, patients and physicians should not hesitate to use systemic isotretinoin in indicated cases.

15 September 2022 in Immunity, Inflammation and Disease
Verified
Journal Article
Open access
MÖMerve Özçep
Merve Özçep
NANilhan Ayse Atsu
Nilhan Ayse Atsu
NSNilgün Solak
Nilgün Solak
SÇSevim Karakaş Çelik
Sevim Karakaş Çelik
Background: Psoriasis is a common, chronic, inflammatory skin disease that involves changes taking place as a result of activation of the immune system. Suppressor of cytokine signaling proteins (SOCS) are intracellular proteins that act as endogenous inhibitors of proinflammatory pathways triggered by various cytokines. In this study, the relationship between psoriasis disease and SOCS gene polymorphisms is investigated in relation to the pathogenesis of psoriasis to clarify the psoriasis susceptibility profile.Methods: The SOCS3 rs4969169 and SOCS7 rs3748726 polymorphisms were detected using the polymerase chain reaction–restriction fragment length polymorphism (PCR‐RFLP) method. The study was approved by the Clinical Research Ethics Committee of Bulent Ecevit University and performed in accordance with the ethical standards established in the 1964 Declaration of Helsinki and later amendments. All participants were informed of the parameters of the study, and they signed consent forms before being included. Statistical analysis was performed using the SPSS 18.0 (SPSS Inc.) package program.Results: For the SOCS3 rs4969169 genotype frequency, the CC/CT genotypes represented 67%/33% in the patient group and 73%/27% in the control group. For the SOCS7 rs3748726 genotype frequency, the TT/TC/CC genotypes made up 89%/9%/1% in the patient group and 91%/8%/1% in the control group.Conclusion: The polymorphisms of SOCS3 rs4969169 and SOCS7 rs3748726 were found to have no effective role in the pathogenesis of psoriasis. This is the first study to investigate this topic, and further studies with larger, more ethnically diverse samples are encouraged.