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Ahmed Musaad Abd El-Fattah,Mohamed Attia,Hisham Atef Ebada 대한구강악안면외과학회 2022 대한구강악안면외과학회지 Vol.48 No.2
Retropharyngeal schwannoma is rare. To the best of our knowledge, only 18 cases have been published in the English literature. Complete surgical excision is the treatment of choice for schwannomas. Transoral approaches have been applied for smaller lesions, and external cervical approaches are preferred for larger and more complex lesions. In this report, we present a case of large retropharyngeal schwannoma that was excised using an endoscopic-assisted transoral approach with palatal splitting. Postoperative functional and oncologic outcomes were satisfactory with no reported intra-operative/postoperative complications.
Perianal Actinomycosis: A Surgeon’s Perspective and Review of Literature
Alexios Dosis,Atia Khan,Henrietta Leslie,Sahar Musaad,Adrian Smith 대한대장항문학회 2021 Annals of Coloproctolgy Vol.37 No.5
Actinomycosis is a serious suppurative, bacterial infection caused by the gram-positive anaerobic Actinomyces species. Primary perianal actinomycosis is rare and challenging for the colorectal surgeon. We aimed to present our experience and compare this with available literature. All patients with isolated Actinomyces on microbiology reports, between January 2013 and February 2021, were identified and reviewed. Data collection was retrospective based on electronic patient records. The site of infection and treatment strategy were examined. Perianal cases were evaluated in depth. All publications available in the literature were interrogated. Fifty-nine cases of positive actinomycosis cultures were reviewed. Six cases of colonization were excluded. Actinomyces turicensis was the most common organism isolated. Five cases of perianal actinomycosis were identified requiring prolonged antibiotic and surgical therapy. Twenty-one studies, most case reports, published since 1951 were also reviewed. Diagnosis of perianal actinomycosis may be challenging but should be suspected particularly in recurrent cases. Prolonged bacterial cultures in anaerobic conditions are necessary to identify the bacterium. An extended course of antibiotic therapy (months) is required for eradication in certain cases.
Shabanah, Othman A AL,Alotaibi, Moureq R,Rejaie, Salim S Al,Alhoshani, Ali R,Almutairi, Mashal M,Alshammari, Musaad A,Hafez, Mohamed M Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.11
Objective: Breast cancer is global female health problem worldwide. Most of the currently used agents for breast cancer treatment have toxic side-effects. Ginseng root, an oriental medicine, has many health benefits and may exhibit direct anti-cancer properties. This study was performed to assess the effects of ginseng on breast cancer cell lines. Materials and Methods: Cytotoxicity of ginseng extract was measured by MTT assay after exposure of MDA-MB-231, MCF-10A and MCF-7 breast cancer cells to concentrations of 0.25, 0.5, 1, 1.5, 2 and 2.5 mg/well. Expression levels of p21WAF, p16INK4A, Bcl-2, Bax and P53 genes were analyzed by quantitative real time PCR. Results: The treatment resulted in inhibition of cell proliferation in a dose-and time-dependent manner. p53, p21WAF1and p16INK4A expression levels were up-regulated in ginseng treated MDA-MB-231 and MCF-7 cancer cells compared to untreated controls and in MCF-10A cells. The expression levels of Bcl2 in the MDA-MB-231 and MCF-7 cells were down-regulated. In contrast, that of Bax was significantly up-regulated. Conclusion: The results of this study revealed that ginseng may inhibit breast cancer cell growth by activation of the apoptotic pathway.
Joo, Young-Chul,Ko, Young Jin,You, Seung Kyou,Shin, Sang Kyu,Hyeon, Jeong Eun,Musaad, Almisned Shuaa,Han, Sung Ok American Chemical Society 2018 Journal of agricultural and food chemistry Vol.66 No.51
<P>Taurine is a biologically and physiologically valuable food additive. However, commercial taurine production mainly relies on environmentally harmful chemical synthesis. Herein, for the first time in bacteria, we attempted to produce taurine in metabolically engineered <I>Corynebacterium glutamicum</I>. The taurine-producing strain was developed by introducing <I>cs</I>, <I>cdo1</I>, and <I>csad</I> genes. Interestingly, while the control strain could not produce taurine, the engineered strains successfully produced taurine via the newly introduced metabolic pathway. Furthermore, we investigated the effect of a deletion strain of the transcriptional repressor McbR gene on taurine production. As a result, sulfur accumulation and <SMALL>L</SMALL>-cysteine biosynthesis were reinforced by the McbR deletion strain, which further increased the taurine production by 2.3-fold. Taurine production of the final engineered strain Tau11 was higher than in other previously reported strains. This study demonstrated a potential approach for eco-friendly biosynthesis as an alternative to the chemical synthesis of a food additive.</P> [FIG OMISSION]</BR>