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- 저자 : Magdi Abdel-Hamid (검색결과 4 건)
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A New Septum in the Female Breast
Mostafa Abdel Rahman Awad,Mahmoud Magdi Sherif,Eaman Yahya Sadek,Hesham Aly Helal,Wafaa Raafat Abdel Hamid 대한성형외과학회 2017 Archives of Plastic Surgery Vol.44 No.2
Background Understanding the female breast fascial system is of paramount importance in breast surgery. Little was written about breast ligaments. Most articles refer to Cooper’s work without further anatomical studies. Lately, a horizontal septum has been described conveying nerves and vessels to the nipple areola complex. Methods During the surgical dissection of the lower part of the breast, in supero-medial technique for breast reduction operations, a fascial septum between the lower two quadrants was detected. This fibrous septum was studied through anatomic dissection of breast tissues during routine breast reshaping procedures that was done on 30 female patients. Magnetic resonance imaging (MRI) was performed preoperatively in all cases and correlated with the intraoperative findings. In the other five cases, outside the clinical study, the imaging was done during routine investigation for breast swellings. Results A vertical septum was identified in the lower part of the breast, lying at the breast meridian between the two lower quadrants. It is a tough bi-laminated structure that extends from the middle of the infra-mammary crease caudally to nipple-areola complex cranially and from the pectoral fascia posteriorly to the overlying skin anteriorly. This was proved by MRI findings. Conclusions This study describes a new inferior vertical septum which separates the lower half of the breast into two definite anatomical compartments: medial and lateral.
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A New Septum in the Female Breast
Awad, Mostafa Abdel Rahman,Sherif, Mahmoud Magdi,Sadek, Eaman Yahya,Helal, Hesham Aly,Hamid, Wafaa Raafat Abdel Korean Society of Plastic and Reconstructive Surge 2017 Archives of Plastic Surgery Vol.44 No.2
Background Understanding the female breast fascial system is of paramount importance in breast surgery. Little was written about breast ligaments. Most articles refer to Cooper's work without further anatomical studies. Lately, a horizontal septum has been described conveying nerves and vessels to the nipple areola complex. Methods During the surgical dissection of the lower part of the breast, in supero-medial technique for breast reduction operations, a fascial septum between the lower two quadrants was detected. This fibrous septum was studied through anatomic dissection of breast tissues during routine breast reshaping procedures that was done on 30 female patients. Magnetic resonance imaging (MRI) was performed preoperatively in all cases and correlated with the intraoperative findings. In the other five cases, outside the clinical study, the imaging was done during routine investigation for breast swellings. Results A vertical septum was identified in the lower part of the breast, lying at the breast meridian between the two lower quadrants. It is a tough bi-laminated structure that extends from the middle of the infra-mammary crease caudally to nipple-areola complex cranially and from the pectoral fascia posteriorly to the overlying skin anteriorly. This was proved by MRI findings. Conclusions This study describes a new inferior vertical septum which separates the lower half of the breast into two definite anatomical compartments: medial and lateral.
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Mona Hasan Gomaa,Zeinab Abdel Hamid,Magdy Ahmed Mahmoud Ibrahim,Rania Abd El Sttar,El-Said Helmy El- Mosallamy 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.5
Carbon nanotubes (CNTs) are the hardest and strongest materials due to their perfect mechanical properties and excellent chemical, electrical, and thermal characteristics. Therefore, CNTs are attractive candidates for the development of innovative multifunctional nanocomposites. The goal of the study was to synthesize and characterize NiMoCNT nanocomposite coatings onto steel substrates by electrodeposition technique to enhance the properties of the NiMo layer coating. The electrodeposition was carried out galvanostatically, and the percentage of MWCNT (wt%) in the composites was investigated under various working circumstances, including current density, pH, temperature, and CNTs concentration in the electroplating bath. Different techniques, such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray analysis (EDS), were used for the composite characterization. Moreover, the corrosion resistance and the nanocomposites’ mechanical characteristics were investigated. The results of the NiMo alloy show that the enhancement in current density decreases the Mo content from 41.8 wt% (at 3.5×10−2 Acm−2) to 31.06 wt% (at 6.5×10−2 Acm−2). On the other hand, the results proved that as the concentration of CNTs in the bath increases, the wt% of CNTs co-deposited in the NiMo matrix enhances, peaking at 22.36 wt% at 0.03 gL−1. Furthermore, the findings show that the Mo content of the coating is reduced when CNTs are present. In comparison to a NiMo coating without CNTs, the composite incorporating CNTs exhibits better corrosion resistance. In addition, the mechanical properties show that the microhardness of NiMoCNT composite-coated steel is better than that of NiMo, and the highest microhardness of NiMoCNT composite coated steel was 4.69 GPa, while pure NiMo coated steel had a microhardness of 2.37 GPa.
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Fars K. Alanazi,Ibrahim A. Alsarra,Gamal El-Din I. Harisa,Ahmad Maqboul,Magdi Abdel-Hamid,Steven H. Neau 대한약학회 2011 Archives of Pharmacal Research Vol.34 No.4
The aim of this study was to investigate human erythrocytes as a carrier for targeted drug delivery of primaquine (PQ). The process of PQ loading in human erythrocytes, as well as the effect of PQ loading on the oxidative status of erythrocytes, was also studied. At PQ concentrations of 2, 4, 6, and 8 mg/mL and an incubation time of 2 h, the ratios of the concentrations of PQ entrapped in erythrocytes to that in the incubation medium were 0.515, 0.688, 0.697 and 0.788, respectively. The maximal decline of erythrocyte reduced glutathione content was observed at 8 mg/mL of PQ compared with native erythrocytes p < 0.001. In contrast, malondialdehyde and protein carbonyl were significantly increased in cells loaded with PQ (p < 0.001). Furthermore, osmotic fragility of PQ carrier erythrocytes was increased in comparison with unloaded cells. Electron microscopy revealed spherocyte formation with PQ carrier erythrocytes. PQ-loaded cells showed sustained drug release over a 48 h period. Erythrocytes were loaded with PQ successfully, but there were some biochemical as well as physiological changes that resulted from the effect of PQ on the oxidative status of drugloaded erythrocytes. These changes may result in favorable targeting of PQ-loaded cells to reticulo-endothelial organs. The relative impact of these changes remains to be explored in ongoing animal studies.
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