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Zayed, A., M. Abdel-Halim, K. SAYED, and K. A. Faisal Nouredin, Doaa Hany, "Gene expression of FOXP3 and TGF-β1 in the blood of patients with mycosis fungoides, a hospital-based case–control study", EWDS, vol. 13, issue 3, pp. 133-136, 2016.
Zayed, A. A., M. R. E. Abdel-Halim, K. S. Sayed, F. N. Mohammed, D. M. Hany, and K. S. Amr, "Transforming growth factor-$\beta$1 gene polymorphism in mycosis fungoides", Clinical and experimental dermatology, vol. 39, pp. 806–809, 2014. Abstract
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Youssef, R., M. R. E. Abdel-Halim, D. M. ABDELHALIM, M. M. Fawzy, M. F. Hussein, M. F. Elmasry, S. S. Sayed, and N. M. Abo Eid, "PUVA-induced pityriasis lichenoides chronica-like papular lesions in patients with mycosis fungoides: a clinical, histopathological and immunohistochemical study.", Archives of dermatological research, 2019. Abstract

Mycosis fungoides (MF) is the most common form of cutaneous T cell lymphoma (CTCL) with many clinical variants including papular and pityriasis lichenoides chronica (PLC)-like variants. During psoralen and ultraviolet A (PUVA) treatment of MF, PLC-like papular lesions were observed to appear. The exact nature of these lesions is not fully understood. This work aimed to study PLC-like papular lesions arising in MF patients receiving PUVA therapy clinically, histopathologically and immunohistochemically (using monoclonal antibodies against CD4 and CD8) and to compare them with lesions in classic PLC patients. Fifteen MF patients with PLC-like papular lesions arising during PUVA treatment were included and 15 patients with classic PLC served as controls. While the extent of these lesions significantly correlated with their duration (p < 0.05), it showed no significant correlation with the TNMB stage of MF, number of phototherapy sessions or cumulative UVA dose at which they started to appear. The response status of MF to PUVA did not affect their development. Compared to classic PLC, these lesions showed significantly more acute onset (p = 0.003). None of these lesions showed histopathological features essential to diagnose papular/PLC-like MF and no significant difference existed with regard to their histopathological and CD4/CD8 phenotypic features compared to classic PLC. Papular lesions mimicking PLC in MF patients receiving PUVA mostly represent an upgrading reaction with possible good prognostic implication.

Youssef, R., D. Mahgoub, O. A. Zeid, D. M. Abdel-Halim, M. El-Hawary, M. F. Hussein, M. A. Morcos, D. M. Aboelfadl, H. A. Abdelkader, Y. Abdel-Galeil, et al., "Hypopigmented Interface T-Cell Dyscrasia and Hypopigmented Mycosis Fungoides: A Comparative Study.", The American Journal of dermatopathology, vol. 40, issue 10, pp. 727-735, 2018 Oct. Abstract

Hypopigmented interface T-cell dyscrasia (HITCD) is a distinct form of lymphoid dyscrasia that may progress to hypopigmented mycosis fungoides (HMF). We compared both diseases as regards their CD4/CD8 phenotype and expression of granzyme B and tumor necrosis factor-alpha (TNF-α) and how these are affected by narrow-band UVB (nb-UVB). The study included 11 patients with HITCD and 9 patients with HMF. They received nb-UVB thrice weekly until complete repigmentation or a maximum of 48 sessions. Pretreatment and posttreatment biopsies were stained using anti CD4, CD8, TNF-α, and granzyme B monoclonal antibodies. Epidermal lymphocytes were CD8 predominant in 54.5% and 66.7% of HITCD and HMF cases, respectively, whereas dermal lymphocytes were CD4 predominant in 63.6% and 66.7%, respectively. Significantly, more dermal infiltrate was encountered in HMF (P = 0.041). In both diseases, granzyme B was only expressed in the dermis, whereas TNF-α was expressed both in the epidermis and dermis. No difference existed as regards the number of sessions needed to achieve repigmentation or cumulative nb-UVB dose reached at end of study. (P > 0.05). Narrow-band UVB significantly reduced only the epidermal lymphocytes in both diseases (P ≤ 0.05) with their complete disappearance in 8 (72.7%) HITCD and 6 (66.7%) HMF cases. In both diseases, nb-UVB did not affect granzyme B or TNF-α expression (P > 0.05). In conclusion, both diseases share the same phenotype, with HITCD being a milder form of T-cell dysfunction. In both diseases, epidermal lymphocytes are mainly CD8-exhausted cells lacking cytotoxicity, whereas dermal cells are mostly reactive cells exerting antitumor cytotoxicity. Tumor necrosis factor-alpha mediates hypopigmentation in both diseases and prevents disease progression. Repigmentation after nb-UVB in both diseases occurs before and independently from disappearance of the dermal infiltrate.

Youssef, R., M. R. E. Abdel-Halim, M. Kamel, M. Khorshid, and A. Fahim, "Effect of polymorphisms in IL-12B p40, IL-17A and IL-23 A/G genes on the response of psoriatic patients to narrowband UVB.", Photodermatology, photoimmunology & photomedicine, vol. 34, issue 5, pp. 347-349, 2018 09.
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Wedad Z. Mostafa, Magda I. Assaf, M. A. - H. I. A. S. E. - T. R. E. A. A., "Histopathological evidence of involvement of eccrine sweat glands in adverse cutaneous drug reactions", JEWDS, vol. 13, no. 2, pp. 65–70, 2016. Abstract
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Tawfic, S. O., M. R. E. Abdel-Halim, and O. G. Shaker, "Assessment of interleukin-17 in alopecia areata: a case–control pilot study", Journal of the Egyptian Women’s Dermatologic Society, vol. 11, no. 1: LWW, pp. 20–23, 2014. Abstract
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Shalaby, S., E. A. El-Nabarawy, M. Assaf, and M. R. E. Abdel Halim, "Causes of acquired erythroderma in adults presenting to a tertiary care centre in Cairo, Egypt", Journal of the Egyptian Women's Dermatologic Society, vol. 12, no. 3: Wolters Kluwer, pp. 162–169, 2015. Abstract
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Shaker, O., and M. Abdel-Halim, "Connexin 26 in psoriatic skin before and after two conventional therapeutic modalities: methotrexate and PUVA", European Journal of Dermatology, vol. 22, no. 2, pp. 218–224, 2012. Abstract
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Shaker, O. G., W. Moustafa, S. Essmat, M. Abdel-Halim, and M. El-Komy, "The role of interleukin-12 in the pathogenesis of psoriasis", Clinical biochemistry, vol. 39, no. 2: Elsevier, pp. 119–125, 2006. Abstract
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Shaker, O. G., M. Khairallah, H. M. Rasheed, M. R. Abdel-Halim, O. M. Abu Zeid, A. M. El Tawdi, H. H. El Hadidi, and A. Ashmaui, "Antiangiogenic effect of methotrexate and PUVA on psoriasis", Cell biochemistry and biophysics, vol. 67, no. 2: Springer, pp. 735–742, 2013. Abstract
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Shahin, A., R. Yousef, S. Hussein, M. Niazy, D. Attia, M. AlMasry, S. Shalaby, H. A. El-Kader, M. Bahgat, D. Teleb, et al., "Widespread Necrotizing Purpura and Lucio Phenomenon as the First Diagnostic Presentation of Diffuse Nonnodular Lepromatous Leprosy", CUTIS, vol. 108, pp. E4-E8, 2021.
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RASHEED, H., M. M. T. Fawzi, M. R. E. Abdel-Halim, A. M. Eissa, N. M. Salem, and S. Mahfouz, "Immunohistochemical study of the expression of matrix metalloproteinase-9 in skin lesions of mycosis fungoides", The American Journal of Dermatopathology, vol. 32, no. 2: LWW, pp. 162–169, 2010. Abstract
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Ragab, G., M. T. Hegazy, M. Ali, M. R. E. Abdel-Halim, and X. Puéchal, "Three Patterns of Cutaneous Involvement in Granulomatosis with Polyangiitis.", Journal of advanced research, vol. 24, pp. 311-315, 2020. Abstract

Background: Skin involvement in granulomatosis with polyangiitis (GPA) is common and can appear as an initial presentation of the disease or more commonly through its course.

Case presentation: We report a case of a 24-year-old male patient, previously diagnosed as having GPA, admitted with fever, hemoptysis, generalized hemorrhagic blisters associated with arthralgia, fatigue, myalgia, nasal crusting, and vertigo. Three weeks prior to admission, he developed erythematous papules on both elbows, and purpuric papules on both lower limbs. Histopathological examination revealed: interstitial granulomatous dermatitis (elbows) and foci of dermal hemorrhage, foci of interstitial histiocytes and zones of altered necrobiotic collagen (lower limbs) consistent with cutaneous lesions of GPA. Two weeks later, his rash progressed to widespread purpura associated with hemorrhagic blisters. Another biopsy revealed leukocytoclastic vasculitis with fibrinoid necrosis of the vessel walls associated with perivascular infiltrate of neutrophils, nuclear dust and extravasated erythrocytes without an associated granulomatous inflammation or necrobiosis. The constellation of the results of the three biopsies together with clinical correlation pointed to a flare of GPA.

Conclusion: Skin involvement in GPA is quite common, and it can manifest in different forms in the same patient. Our patient developed three different skin pathologies within a short period of time.

Ragab, M. S., S. M. Essmat, D. A. Bassiounv, M. R. E. Abdel-Halim, H. H. El-Hadidi, N. M. El-Sharkawy, F. M. Ghaleb, and S. M. Al-Maghrabi, Effect of staphylococcal colonization and exotoxin production on apoptosis in atopic dermatitis, , 2005. Abstract

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Pioltelli, P., P. T. Atkinson, M. Mattar, A. Edrees, H. M. A. Ahmad, A. Laymouna, M. R. E. Abdel-Halim, and G. Ragab, Monoclonal gammopathies with miscellaneous associations, , 2022.
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Osama, R., H. A. Abdelkader, S. Ahmad, and M. R. E. Abdel-Halim, "Clustered yellowish papules on the cheek.", International journal of dermatology, 2020.
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Mostafa, N. A., M. Assaf, S. Elhakim, M. R. E. Abdel-Halim, E. El-Nabarawy, and khaled Gharib, "Diagnostic accuracy of immunohistochemical markers in differentiation between basal cell carcinoma and trichoepithelioma in small biopsy specimens.", Journal of cutaneous pathology, vol. 45, issue 11, pp. 807-816, 2018 Nov. Abstract

BACKGROUND: The distinction of trichoepithelioma from basal cell carcinoma in small superficial biopsies is important but often challenging. This has inspired many scientists to test the validity of immunohistochemical markers in the differential diagnosis.

OBJECTIVES: To develop an immunohistochemical protocol that helps in differentiation between both trichoepithelioma (TE) and basal cell carcinoma (BCC) with higher sensitivity and specificity.

METHODS: Using standard immunohistochemical techniques, we examined 10 TEs and 19 BCCs for the expression of CK19, Ki-67, androgen receptors (AR), CD10, and PHLDA1.

RESULTS: Immunoreactivity of AR, Ki-67, and CD10 in tumor cells was significantly higher in BCC than TE with a diagnostic accuracy in BCC of 75.5%, 75.8%, and 79.3% respectively, whereas immunoreactivity of PHLDA1 in tumor cells and stromal CD10 was significantly higher in TE than BCC with a diagnostic accuracy in TE of 100% and 82.8%, respectively. In contrast, immunoreactivity for CK19 showed no statistically significant differences between both tumors.

CONCLUSION: The analysis of CD10, Ki-67, and PHLDA1 can be used as a helpful immunohistochemical panel in the distinction between TE and BCC especially in small and superficial biopsies.

Mona R.E. Abdel-Halim, Faisal N. Mohammed, K. S. D. A. A. G. E. - D. M. B. S. M. A. A., "Expression of programmed cell death protein 4 in non-melanoma skin cancer compared with psoriasis and normal skin, a preliminary study", JEWDS, vol. 13, no. 2, pp. 77–82, 2016. Abstract
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Komy, M. E. L., E. El-Nabarawy, H. Abdelkader, M. R. E. Abdel-Halim, and R. AlAguizy, "Pigmentary mosaicism and extracutaneous defects: a case report of a rare form of twin spotting", Pigment International, vol. 8, pp. 176-8, 2021.
Komy, M. E. L., B. Gaballa, and M. R. E. Abdel-Halim, "Longitudinal erythro-leukoxanthonychia developing after PUVA therapy", Skin Appendage Disorders, 2021.
Khatery, B. H. M., M. R. E. Abdel-Halim, and S. Adel, "Comedonal Lesions on the Trunk and Proximal Extremities: Challenge.", The American Journal of dermatopathology, vol. Publish Ahead of Print, 2020.
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Hoshy, K. E., M. R. E. Abdel-Halim, E. El-Nabarawy, and S. Shalaby, "Cutaneous Protothecosis as an Unusual Complication Following Dermal Filler Injection: A Case Report.", The Journal of clinical and aesthetic dermatology, vol. 12, issue 12, pp. 13-16, 2019. Abstract

A 77-year-old female patient presented with bilateral tender, swollen, erythematous, focally crusted cheeks with a discharge of pus and necrotic material, which had developed one month after autologous fat transfer and a corrective injection procedure conducted to correct an overdone fat transfer. Histopathological examination of the discharged material using routine hematoxylin and eosin staining revealed degenerated collagen admixed with three different filler materials. Scattered all throughout the specimen were numerous thick-walled, basophilic, nonbudding spherical bodies of variable sizes. The bodies stained positively with Periodic acid-Schiff and Alcian blue and showed internal septation and sporangia with a morula-like appearance. The morphology of these bodies was characteristic of a infection. The patient was treated by surgical drainage accompanied by itraconazole 200mg daily for six months, ultimately showing marked improvement.

Hafez, V. G., M. Bosseila, M. R. E. Abdel Halim, O. G. Shaker, M. Kamal, and H. S. Kareem, "Clinical effects of “pioglitazone”, an insulin sensitizing drug, on psoriasis vulgaris and its co-morbidities, a double blinded randomized controlled trial", Journal of Dermatological Treatment, vol. 26 (3), issue Jun: Informa UK Ltd. London, pp. 208-14, 2015. Abstract

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FH, S., A. - A. FA, M. NH, A. - H. MRE, E. - N. EA, and K. AM, "Congenital Primary Cutaneous Rhabdomyosarcoma of the Perineum with Mixed Histopathological Features and Unusual Expression of Smooth Muscle Actin: Report of a Case", Clinical Dermatology Open Access Journal, issue 2(1), 2017.