Assessment of intralesional injection of botulinum toxin type A in hypertrophic scars and keloids: Clinical and pathological study.

Keloids and hypertrophic scars are cosmetic problems with significant morbidity. Many clinical modalities were tried in order to modulate the disfigurement related to these pathologic scars. To evaluate the clinical and histopathological effects of Botulinum toxin type A (BTX-A) injection on keloids and hypertrophic scars.

Evaluating serum level of thymidylate synthase in post burn keloid patients before and after intralesional injection of 5-fluorouracil.

Background: Keloids are fibrous lesions formed at the site of trauma due to types I and III collagen irregular production. The presence of thymidylate synthase (TS) is a must for DNA synthesis and repairs causing cell death. 5-fluorouracil (5-FU) is a fluorinated pyrimidine analogue acting as an anti-metabolic agent that inhibits thymidylate synthase and interferes with ribo-nucleic acid (RNA) synthesis.

Changing in the Epidemiology of Tinea Capitis among School Children in Egypt.

Background: Tinea capitis remains a prevalent health problem among school-aged children.

Objective: To estimate the prevalence of tinea capitis among primary school students, in Fayoum, Egypt with identification of etiological agents in both public and private primary schools.

Methods: A cross-sectional study was conducted in twelve primary schools.

Epidemiological comparative study of pediculosis capitis among primary school children in Fayoum and Minofiya governorates, Egypt.

Pediculosis is a frequent public health problem. The pattern and prevalence of Pediculosis is dependent on many socio-demographic and economic factors. It is common in schoolchildren especially primary level; it may affect their learning performance.

The effect of H₁ and H₂ receptor antagonists on melanogenesis.

Background: Histamine was found to stimulate melanogenesis in cultured human melanocytes specifically mediated by histamine H 2 receptors via protein kinase A activation. Based on this finding, the effect of topically applied H 2 antagonist on UVB-irradiated Guinea pigs' skin was examined and found to be suppressive on the post-irradiation melanogenesis.

Aims: In this study, we tried to explore the role of topically applied H 1 and H 2 receptor antagonists, in inhibition of UVB-induced melanization.