22 results on '"Redfern, Chris P. F."'
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2. Pair bonds during the annual cycle of a long-distance migrant, the Arctic Tern (Sterna paradisaea)
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Redfern, Chris P. F.
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- 2021
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3. Upwelling systems in the migration ecology of Roseate Terns (Sterna dougallii) breeding in northwest Europe
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Redfern, Chris P. F., primary, Kinchin‐Smith, David, additional, Newton, Stephen, additional, Morrison, Paul, additional, Bolton, Mark, additional, and Piec, Daniel, additional
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- 2021
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4. Use of sea ice by arctic terns Sterna paradisaea in Antarctica and impacts of climate change
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Redfern, Chris P. F., primary and Bevan, Richard M., additional
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- 2020
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5. Overland movement and migration phenology in relation to breeding of Arctic Terns Sterna paradisaea
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Redfern, Chris P. F., primary and Bevan, Richard M., additional
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- 2019
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6. Overland movement and migration phenology in relation to breeding of Arctic Terns Sterna paradisaea.
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Redfern, Chris P. F. and Bevan, Richard M.
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BIRD breeding ,PHENOLOGY ,STERNUM ,TERNS - Abstract
It is often implicitly assumed that seabirds migrate using marine environments, but this assumption is increasingly being challenged by electronic tracking data. The arrival and departure routes of Arctic Terns breeding on the North Sea coast of the United Kingdom (UK) are unknown but there has been speculation about the possibility of overland migration. Analysis of light‐level geolocator data from birds breeding on the Farne Islands suggests that these birds arrived and left their North Sea colony overland via the Irish Sea, rather than taking coastal routes along the east coast of the UK and through the English Channel. In addition, some departing birds may enter the North Atlantic by crossing Ireland rather than through the Irish Sea. The direction of arrival in spring had a more southerly orientation than the direction of autumn departure. The geolocator data allow migration phenology in relation to breeding to be defined and indicated that the birds arrived around 15 days before the first eggs were laid in the colony. Departure timing may be determined by seasonal progression and not markedly influenced by breeding success. This study supports the idea that overland migration may be a more widespread and consistent strategy for seabirds than has been realized. [ABSTRACT FROM AUTHOR]
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- 2020
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7. Three Faces of Mercaptopurine Cytotoxicity In Vitro: Methylation, Nucleotide Homeostasis, and Deoxythioguanosine in DNA
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Coulthard, Sally A., primary, McGarrity, Sarah, additional, Sahota, Kalvin, additional, Berry, Philip, additional, and Redfern, Chris P. F., additional
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- 2018
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8. High-resolution micromechanical measurement in real time of forces exerted by living cells
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Swierczewski, Robert, primary, Hedley, John, additional, and Redfern, Chris P. F., additional
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- 2016
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9. Relevance of Nonsynonymous CYP2C8 Polymorphisms to 13-cisRetinoic Acid and Paclitaxel Hydroxylation
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Rowbotham, Sophie E., primary, Boddy, Alan V., additional, Redfern, Chris P. F., additional, Veal, Gareth J., additional, and Daly, Ann K., additional
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- 2010
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10. Enhancing enhancers: new complexities in the retinoid regulation of gene expression
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REDFERN, Chris P. F., primary
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- 2004
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11. Change in body mass during breeding in Barn Swallows Hirundo rustica.
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Myers, Geoff W. and Redfern, Chris P. F.
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Capsule The body mass of female Barn Swallows (Hirundo rustica) varies cyclically in relation to breeding attempts within breeding seasons. Aim To determine whether body mass declines in relation to the progress of incubation in female and male Barn Swallows and whether this differs between breeding attempts within a season. Methods Adult Swallows were caught and ringed at breeding sites as part of a long-term study to estimate survival rates. Measurements of body mass and size at the time of ringing were analysed in relation to the start of incubation, defined from detailed observations of the progress of breeding at each site. Results Wing length, hour of weighing, and time from the start of incubation contributed significantly to variation in female body mass. Body mass peaked 3 days before the start of incubation and declined linearly by 0.115 g per day during incubation and brood rearing in both breeding attempts within a season. For males, body mass declined by 0.026 g per day from the start of incubation during the first breeding attempt, but this was not apparent for the smaller sample of males in the second breeding attempt, possibly because such breeding-related changes may be masked by premigratory increases in mass later in the breeding season. Conclusion The body mass of female Swallows varied cyclically during the breeding season in relation to breeding attempts and there were clear differences between male and female Swallows in the magnitude of body mass changes as breeding progressed. [ABSTRACT FROM AUTHOR]
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- 2011
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12. Targeting GRP78 to enhance melanoma cell death.
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Martin, Shaun, Hill, David S., Paton, James C., Paton, Adrienne W., Birch-Machin, Mark A., Lovat, Penny E., and Redfern, Chris P. F.
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ENDOPLASMIC reticulum ,CELL death ,APOPTOSIS ,MELANOMA treatment ,RETINOIDS ,THERAPEUTICS - Abstract
Targeting endoplasmic reticulum stress-induced apoptosis may offer an alternative therapeutic strategy for metastatic melanoma. Fenretinide and bortezomib induce apoptosis of melanoma cells but their efficacy may be hindered by the unfolded protein response, which promotes survival by ameliorating endoplasmic reticulum stress. The aim of this study was to test the hypothesis that inhibition of GRP78, a vital unfolded protein response mediator, increases cell death in combination with endoplasmic reticulum stress-inducing agents. Down-regulation of GRP78 by small-interfering RNA increased fenretinide- or bortezomib-induced apoptosis. Treatment of cells with a GRP78-specific subtilase toxin produced a synergistic enhancement with fenretinide or bortezomib. These data suggest that combining endoplasmic reticulum stress-inducing agents with strategies to down-regulate GRP78, or other components of the unfolded protein response, may represent a novel therapeutic approach for metastatic melanoma. [ABSTRACT FROM AUTHOR]
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- 2010
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13. Brood-patch development and female body mass in passerines.
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REDFERN, CHRIS P. F.
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PASSERIFORMES , *BODY weight , *BIRD breeding , *PHENOLOGY - Abstract
The article discusses a study on whether female body mass of passerines varies in relation to brood-patch (BP) stage. Ringing data for migrant and resident species from north-east England were analyzed to identify general trends in body-mass variations associated to differences in breeding phenology. Data from birds caught using mist nets between 1988 and 2008 were analyzed. It suggests that BP scores are based on morphological criteria and an appropriate statistical model with a larger data set of BP scores can quantify variations in breeding phenology.
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- 2010
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14. The use of intrinsic markers to study bird migration.
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Coiffait, Lisette, Redfern, Chris P. F., Bevan, Richard M., Newton, Jason, and Wolff, Kirsten
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BIRD migration , *BIRD banding , *BIOMARKERS , *ISOTOPES , *GENETIC markers , *TRACE elements - Abstract
The article focuses on the significance of intrinsic markers such as stable isotope ratios (SIRs), trace element, and genetic markers as new techniques in the study of bird migration. It notes that bird ringing is a vital tool in studying and explaining the patterns of bird migration. However, only few of millions of ringed birds are recovered. Moreover, SIRs show enormous potential in the study of avian migration though the interpretation are complicated.
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- 2009
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15. From individuals to flyways: the future of marking birds for conservation.
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Baille, Stephen R., Robinson, Robert A., Clark, Jacquie A., and Redfern, Chris P. F.
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BIRD surveys ,COLLECTION & preservation of birds ,WILDLIFE conservation ,GLOBAL environmental change - Abstract
The article presents a study which identifies some of the key opportunities and challenges that must be prioritized by large-scale bird-making programmes in the next 10 to 20 years in the British and Irish Ringing Scheme. It mentions various issues such as the global environmental change and disease control. It also states that the technologies for bird studies have capabilities to facilitate study designs that require fewer birds to be marked, and provides rapid collation, sharing, and analysis.
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- 2009
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16. Relevance of Nonsynonymous CYP2C8 Polymorphisms to 13-cis Retinoic Acid and Paclitaxel Hydroxylation
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Rowbotham, Sophie E., Boddy, Alan V., Redfern, Chris P. F., Veal, Gareth J., and Daly, Ann K.
- Abstract
CYP2C8 has a major role in the metabolism of the anticancer agents 13-cis retinoic acid (13cisRA) and paclitaxel. There is evidence that polymorphisms in the CYP2C8 gene contribute to observed interindividual differences in paclitaxel metabolism. However, no studies have been performed to determine the relevance of CYP2C8 polymorphisms to 13cisRA metabolism. In the current study, the effect of two common nonsynonymous CYP2C8 polymorphisms, CYP2C8*3 (R139K and K399R) and *4 (I264M), on the metabolism of 13cisRA and paclitaxel was examined using an Escherichia coli expression system with coexpression of human cytochrome P450 reductase. No statistically significant differences in the level of 13cisRA 4-hydroxylase activity were associated with either CYP2C8 allelic variant compared with the wild-type CYP2C8.1 enzyme. Furthermore, no differences were observed for the CYP2C8.3 or CYP2C8.4 enzymes with respect to paclitaxel 6α-hydroxylase kinetics compared with wild-type CYP2C8.1. However, when the effects of the individual polymorphisms making up the CYP2C8*3 allele were considered, a significantly lower level of paclitaxel 6α-hydroxylase activity was associated with the K399R enzyme. A lower level of activity was also seen for the R139K enzyme, although this difference was not significant. No differences were observed with respect to 13cisRA 4-hydroxylase activity. We conclude that common CYP2C8 polymorphisms are unlikely to explain reported interindividual variation in 13cisRA or paclitaxel pharmacokinetics.
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- 2010
17. Abstracts from the 3rd International Genomic Medicine Conference (3rd IGMC 2015)
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Shay, Jerry W., Homma, Noriko, Zhou, Ruyun, Naseer, Muhammad Imran, Chaudhary, Adeel G., Al-Qahtani, Mohammed, Hirokawa, Nobutaka, Goudarzi, Maryam, Fornace, Albert J., Baeesa, Saleh, Hussain, Deema, Bangash, Mohammed, Alghamdi, Fahad, Schulten, Hans-Juergen, Carracedo, Angel, Khan, Ishaq, Qashqari, Hanadi, Madkhali, Nawal, Saka, Mohamad, Saini, Kulvinder S., Jamal, Awatif, Al-Maghrabi, Jaudah, Abuzenadah, Adel, Chaudhary, Adeel, Al Qahtani, Mohammed, Damanhouri, Ghazi, Alkhatabi, Heba, Goodeve, Anne, Crookes, Laura, Niksic, Nikolas, Beauchamp, Nicholas, Abuzenadah, Adel M., Vaught, Jim, Budowle, Bruce, Assidi, Mourad, Buhmeida, Abdelbaset, Merdad, Leena, Kumar, Sudhir, Miura, Sayaka, Gomez, Karen, Rasool, Mahmood, Rebai, Ahmed, Karim, Sajjad, Eldin, Hend F. Nour, Abusamra, Heba, Alhathli, Elham M., Salem, Nada, Al-Qahtani, Mohammed H., Faheem, Hossam, Agarwa, Ashok, Nieschlag, Eberhard, Wistuba, Joachim, Damm, Oliver S., Beg, Mohd A., Abdel-Meguid, Taha A., Mosli, Hisham A., Bajouh, Osama S., Coskun, Serdar, Abu-Elmagd, Muhammad, Dallol, Ashraf, Hakamy, Sahar, Al-Qahtani, Wejdan, Al-Harbi, Asia, Hussain, Shireen, Ozkosem, Burak, DuBois, Rick, Messaoudi, Safia S., Dandana, Maryam T., Mahjoub, Touhami, Almawi, Wassim Y., Abdalla, S., Al-Aama, M. Nabil, Elzawahry, Asmaa, Takahashi, Tsuyoshi, Mimaki, Sachiyo, Furukawa, Eisaku, Nakatsuka, Rie, Kurosaka, Isao, Nishigaki, Takahiko, Nakamura, Hiromi, Serada, Satoshi, Naka, Tetsuji, Hirota, Seiichi, Shibata, Tatsuhiro, Tsuchihara, Katsuya, Nishida, Toshirou, Kato, Mamoru, Mehmood, Sajid, Ashraf, Naeem Mahmood, Asif, Awais, Bilal, Muhammad, Mehmood, Malik Siddique, Hussain, Aadil, Jamal, Qazi Mohammad Sajid, Siddiqui, Mughees Uddin, Alzohairy, Mohammad A., Al Karaawi, Mohammad A., Nedjadi, Taoufik, Al-Khattabi, Heba, Al-Ammari, Adel, Al-Sayyad, Ahmed, Zitouni, Hédia, Raguema, Nozha, Ali, Marwa Ben, Malah, Wided, Lfalah, Raja, Almawi, Wassim, Elanbari, Mohammed, Ptitsyn, Andrey, Mahjoub, Sana, El Ghali, Rabeb, Achour, Bechir, Amor, Nidhal Ben, N’siri, Brahim, Morjani, Hamid, Azhar, Esam, Chayeb, Vera, Dendena, Maryam, Zitouni, Hedia, Zouari-Limayem, Khedija, Refaat, Bassem, Ashshi, Ahmed M., Batwa, Sarah A., Ramadan, Hazem, Awad, Amal, Ateya, Ahmed, El-Shemi, Adel Galal Ahmed, Ashshi, Ahmad, Basalamah, Mohammed, Na, Youjin, Yun, Chae-Ok, El-Shemi, Adel Galal, Kensara, Osama, Abdelfattah, Amr, Dheeb, Batol Imran, Al-Halbosiy, Mohammed M. F., Al lihabi, Rghad Kadhim, Khashman, Basim Mohammed, Laiche, Djouhri, Adeel, Chaudhary, Taoufik, Nedjadi, Al-Afghani, Hani, Łastowska, Maria, Al-Balool, Haya H., Sheth, Harsh, Mercer, Emma, Coxhead, Jonathan M., Redfern, Chris P. F., Peters, Heiko, Burt, Alastair D., Santibanez-Koref, Mauro, Bacon, Chris M., Chesler, Louis, Rust, Alistair G., Adams, David J., Williamson, Daniel, Clifford, Steven C., Jackson, Michael S., Singh, Mala, Mansuri, Mohmmad Shoab, Jadeja, Shahnawaz D., Patel, Hima, Marfatia, Yogesh S., Begum, Rasheedunnisa, Mohamed, Amal M., Kamel, Alaa K., Helmy, Nivin A., Hammad, Sayda A., Kayed, Hesham F., Shehab, Marwa I., El Gerzawy, Assad, Ead, Maha M., Ead, Ola M., Mekkawy, Mona, Mazen, Innas, El-Ruby, Mona, Shahid, S. M. A., Arif, J. M., Lohani, Mohtashim, Imen, Moumni, Leila, Chaouch, Houyem, Ouragini, Kais, Douzi, Fethi, Chaouachi Dorra Mellouli, Mohamed, Bejaoui, Salem, Abbes, Faggad, Areeg, Gebreslasie, Amanuel T., Zaki, Hani Y., Abdalla, Badreldin E., AlShammari, Maha S., Al-Ali, Rhaya, Al-Balawi, Nader, Al-Enazi, Mansour, Al-Muraikhi, Ali, Busaleh, Fadi, Al-Sahwan, Ali, Borgio, Francis, Sayyed, Abdulazeez, Al-Ali, Amein, Acharya, Sadananda, Zaki, Maha S., El-Bassyouni, Hala T., Elshal, Mohammed F., M., Kaleemuddin, Aldahlawi, Alia M., Saadah, Omar, McCoy, J. Philip, El-Tarras, Adel E., Awad, Nabil S., Alharthi, Abdulla A., Ibrahim, Mohamed M. M., Alsehli, Haneen S., Gari, Abdullah M., Abbas, Mohammed M., Kadam, Roaa A., Gari, Mazen M., Alkaff, Mohmmed H., Gari, Mamdooh A., eldin, Hend F. Nour, Moradi, Fatima A., Rashidi, Omran M., Awan, Zuhier A., Kaya, Ibrahim Hamza, Al-Harazi, Olfat, Colak, Dilek, Alkousi, Nabila A., Athanasopoulos, Takis, Bahmaid, Afnan O., Alhwait, Etimad A., Alkaf, Mohammed H., Kadam, Roaa, Kalamegam, Gauthaman, Alhathli, Elham, Alsayed, Salma N., Aljohani, Fawziah H., Habeeb, Samaher M., Almashali, Rawan A., Basit, Sulman, Ahmed, Samia M., Sharma, Rakesh, Agarwal, Ashok, Durairajanayagam, Damayanthi, Samanta, Luna, Sabanegh, Edmund S., Cui, Zhihong, Alboogmi, Alaa A., Alansari, Nuha A., Al-Quaiti, Maha M., Ashgan, Fai T., Bandah, Afnan, Jamal, Hasan S., Rozi, Abdullraheem, Mirza, Zeenat, Al Sayyad, Ahmad J., Farsi, Hasan M. A., Al-Maghrabi, Jaudah A., Alotibi, Reem, Al-Ahmadi, Alaa, Albogmi, Alaa A., Ebiya, Rasha A., Darwish, Samia M., Montaser, Metwally M., Bajic, Vladimir B., Gomaa, Wafaey, Hanbazazh, Mehenaz, Al-Ahwal, Mahmoud, Hakamy, Saher, Baba, Ghali, Al-Harbi, Abdullah, Baba, Ghalia, Eldin, Hend Nour, Alyamani, Aisha A., Gadi, Rawan, Alfakeeh, Saadiah M., Ghazala, Rubi, Mathew, Shilu, Hamed, M. Haroon, Qadri, Ishtiaq, Mira, Lobna, Shaabad, Manal, Almutairi, Mikhlid H., Ambers, Angie, Churchill, Jennifer, King, Jonathan, Stoljarova, Monika, Gill-King, Harrell, Al-Qatani, Muhammad, Ahmed, Farid, Almagd, Taha Abo, Al-Qahtani, Muhammad, Buhmaida, Abdelbaset, Satar, Rukhsana, Ahmad, Waseem, Nazam, Nazia, Lone, Mohamad I., Naseer, Muhammad I., Jamal, Mohammad S., Zaidi, Syed K., Pushparaj, Peter N., Jafri, Mohammad A., Ansari, Shakeel A., Alqahtani, Mohammed H., Bashier, Hanan, Al Qahtani, Abrar, Nour, Amal M., Zenadah, Adel M. Abu, Al Qahtani, Muhammed, Faheem, Muhammad, Mathew, Shiny, Pushparaj, Peter Natesan, Al-Qahtani, Mohammad H., Alhadrami, Hani A., Hussein, Ibtessam R., Bader, Rima S., Bassiouni, Randa, Alquaiti, Maha, Ashgan, Fai, Schulten, Hans, Alama, Mohamed Nabil, Al Qahtani, Mohammad H., Lone, Mohammad I., Nizam, Nazia, Al-Qahtani, Muhammed H., Alshihri, Eradah, Alharbi, Lina, Natesan, Peter Pushparaj, Khan, Fazal, Sait, Khalid Hussain Wali, Anfinan, Nisreen, Mira, Lobna S., AlQahtani, Mohammed H., Sogaty, Sameera, Bassiouni, Randa I., Sibiani, Abdulrahman M. S., Warsi, Mohiuddin K., Rubi, Kumar, Kundan, Naqvi, Ahmad A. T., Ahmad, Faizan, Hassan, Md I., Ali, Ashraf, Jarullah, Jummanah, Buhmeida, Abdelbasit, Khan, Shahida, Abdussami, Ghufrana, Mahfooz, Maryam, Kamal, Mohammad A., Damanhouri, Ghazi A., Jarullah, Bushra, Jarullah, Mohammad S. S., Bajouh, Osama, Mathkoor, Abdulah E. A., Alsalmi, Hashim M. A., Oun, Anas M. M., Damanhauri, Ghazi A., Chudhary, Adeel G., Abutalib, Yousif A., Merico, Daniele, Walker, Susan, Marshall, Christian R., Zarrei, Mehdi, Scherer, Stephen W., Ashgan, Fai Talal, Zaidi, Syed Kashif, Jan, Mohammed M., Al-Zahrani, Maryam, Lary, Sahira, Dermitzakis, Emmanuel, Al-refai, Abeer A., Saleh, Mona, Yassien, Rehab I., Kamel, Mahmmoud, Habeb, Rabab M., Filimban, Najlaa, Ghannam, Nadia, Abuzenadah, Adel Mohammed, Bibi, Fehmida, Akhtar, Sana, Azhar, Esam I., Yasir, Muhammad, Nasser, Muhammad I., Jiman-Fatani, Asif A., Sawan, Ali, Lahzah, Ruaa A., Ali, Asho, Hassan, Syed A., Hasnain, Seyed E., Tayubi, Iftikhar A., Abujabal, Hamza A., Magrabi, Alaa O., Abuzenada, Adel, Kumosani, Taha Abduallah, Barbour, Elie, Shabaad, Manal, Merdad, Adnan, Gauthaman, Kalamegam, Gari, Mamdooh, Aljahdali, Hani M. A., Al Nono, Reham, Alsehli, Haneen, Abbas, Mohammed, Jamal, Mohammed Sarwar, Ansari, Shakeel, Alghamdi, Mansour A., Shamy, Magdy, Costa, Max, Khoder, Mamdouh I., Kharrat, Najla, Belmabrouk, Sabrine, Abdelhedi, Rania, Benmarzoug, Riadh, Al Qahtani, Mohammed H., Dhamanhouri, Ghazi, Noorwali, Abdelwahab, Alwasiyah, Mohammad Khalid, Bahamaid, Afnan, Alfakeeh, Saadiah, Alyamani, Aisha, Mobasheri, Ali, Jamal, Mohammad Sarwar, Khan, Raziuddin, Bhatia, Kanchan, Ahmad, Saif, AslamTayubi, Iftikhar, Tripathi, Manish, Hassan, Syed Asif, Shrivastava, Rahul, Hassan, Syed, Abujabal, Hamza A. S., Shah, Ishani, Sheikh, Ishfaq A., Ahmad, Ejaz, Rehan, Mohd, AlBasri, Samera F., Turki, Rola F., Hammoudah, Sahar A. F., AlHarbi, Khalid M., El-Attar, Lama M., Darwish, Ahmed M. Z., Ibrahim, Sara M., Choudhry, Hani, Awlia, Jalaludden, khan, Imran, Al-basri, Sameera, Kumosani, Taha, EL Sayed, Heba M., Hafez, Eman A., Elaimi, Aisha Hassan, Bassiouni, Randa Ibrahim, Wintle, Richard F., Pillai, Vikram Gopalakrishna, Sharma, Sujata, Kaur, Punit, Srinivasan, Alagiri, Singh, Tej P., Al-Adwani, Fatima, Hussein, Deema, Al-Sharif, Mona, Al-Ghamdi, Fahad, Baeesa, Saleh S., Kumosani, Taha Abdullah, Al-Allaf, Faisal A., Abduljaleel, Zainularifeen, Alashwal, Abdullah, Taher, Mohiuddin M., Bouazzaoui, Abdellatif, Abalkhail, Halah, Ba-Hammam, Faisal A., Athar, Mohammad, Sait, Khalid HussainWali, Mami, Naira Ben, Haffani, Yosr Z., Medhioub, Mouna, Hamzaoui, Lamine, Cherif, Ameur, Azouz, Msadok, Nasser, Mohammed Imran, Turkistany, Shereen A., Al-harbi, Lina M., Sabir, Jamal, Al-Madoudi, Basmah, Al-Aslani, Bayan, Al-Harbi, Khulud, Al-Jahdali, Rwan, Qudaih, Hanadi, Al Hamzy, Emad, Ilyas, Asad M., Ahmed, Youssri, Alqahtani, Mohammed, Alamandi, Alaa, Subhi, Ohoud, Bagatian, Nadia, Al-Johari, Adel, Al-Hamour, Osman Abdel, Al-Aradati, Hosam, Al-Mutawa, Abdulmonem, Al-Mashat, Faisal, Al-Qahtani, Mohammad, shah, Muhammad W., Azhar, Esam I, Al-Masoodi, Saad, Khamla, Emna, Jlassi, Chaima, Masmoudi, Ahmed S., Belbahri, Lassaad, Al-Khayyat, Shadi, Attas, Roba, Abu-Sanad, Atlal, Abuzinadah, Mohammed, Bouazzi, Habib, Trujillo, Carlos, Alotaibi, Maha, Nassir, Rami, Jiffri, Essam H., Ashraf, Ghulam M., Aziz, Mohammad A., Ali, Rizwan, Samman, Nusaibah, Periyasamy, Sathish, Aldress, Mohammed, Al Otaibi, Majed, Al Yousef, Zeyad, Boudjelal, Mohamed, AlAbdulkarim, Ibrahim, Suhail, Mohd, Qureshi, Abid, Jamal, Adil, El-Readi, Mahmoud Z., Eid, Safaa Y., Wink, Michael, Isa, Ahmed M., Alnuaim, Lulu, Almutawa, Johara, Abu-Rafae, Basim, Alasiri, Saleh, Binsaleh, Saleh, and Alqahtani, Mohamed H.
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Genetics ,Meeting Abstracts ,Biotechnology - Abstract
Table of contents O1 Regulation of genes by telomere length over long distances Jerry W. Shay O2 The microtubule destabilizer KIF2A regulates the postnatal establishment of neuronal circuits in addition to prenatal cell survival, cell migration, and axon elongation, and its loss leading to malformation of cortical development and severe epilepsy Noriko Homma, Ruyun Zhou, Muhammad Imran Naseer, Adeel G. Chaudhary, Mohammed Al-Qahtani, Nobutaka Hirokawa O3 Integration of metagenomics and metabolomics in gut microbiome research Maryam Goudarzi, Albert J. Fornace Jr. O4 A unique integrated system to discern pathogenesis of central nervous system tumors Saleh Baeesa, Deema Hussain, Mohammed Bangash, Fahad Alghamdi, Hans-Juergen Schulten, Angel Carracedo, Ishaq Khan, Hanadi Qashqari, Nawal Madkhali, Mohamad Saka, Kulvinder S. Saini, Awatif Jamal, Jaudah Al-Maghrabi, Adel Abuzenadah, Adeel Chaudhary, Mohammed Al Qahtani, Ghazi Damanhouri O5 RPL27A is a target of miR-595 and deficiency contributes to ribosomal dysgenesis Heba Alkhatabi O6 Next generation DNA sequencing panels for haemostatic and platelet disorders and for Fanconi anaemia in routine diagnostic service Anne Goodeve, Laura Crookes, Nikolas Niksic, Nicholas Beauchamp O7 Targeted sequencing panels and their utilization in personalized medicine Adel M. Abuzenadah O8 International biobanking in the era of precision medicine Jim Vaught O9 Biobank and biodata for clinical and forensic applications Bruce Budowle, Mourad Assidi, Abdelbaset Buhmeida O10 Tissue microarray technique: a powerful adjunct tool for molecular profiling of solid tumors Jaudah Al-Maghrabi O11 The CEGMR biobanking unit: achievements, challenges and future plans Abdelbaset Buhmeida, Mourad Assidi, Leena Merdad O12 Phylomedicine of tumors Sudhir Kumar, Sayaka Miura, Karen Gomez O13 Clinical implementation of pharmacogenomics for colorectal cancer treatment Angel Carracedo, Mahmood Rasool O14 From association to causality: translation of GWAS findings for genomic medicine Ahmed Rebai O15 E-GRASP: an interactive database and web application for efficient analysis of disease-associated genetic information Sajjad Karim, Hend F Nour Eldin, Heba Abusamra, Elham M Alhathli, Nada Salem, Mohammed H Al-Qahtani, Sudhir Kumar O16 The supercomputer facility “AZIZ” at KAU: utility and future prospects Hossam Faheem O17 New research into the causes of male infertility Ashok Agarwa O18 The Klinefelter syndrome: recent progress in pathophysiology and management Eberhard Nieschlag, Joachim Wistuba, Oliver S. Damm, Mohd A. Beg, Taha A. Abdel-Meguid, Hisham A. Mosli, Osama S. Bajouh, Adel M. Abuzenadah, Mohammed H. Al-Qahtani O19 A new look to reproductive medicine in the era of genomics Serdar Coskun P1 Wnt signalling receptors expression in Saudi breast cancer patients Muhammad Abu-Elmagd, Abdelbaset Buhmeida, Ashraf Dallol, Jaudah Al-Maghrabi, Sahar Hakamy, Wejdan Al-Qahtani, Asia Al-Harbi, Shireen Hussain, Mourad Assidi, Mohammed Al-Qahtani, Adel Abuzenadah P2 Analysis of oxidative stress interactome during spermatogenesis: a systems biology approach to reproduction Burak Ozkosem, Rick DuBois P3 Interleukin-18 gene variants are strongly associated with idiopathic recurrent pregnancy loss. Safia S Messaoudi, Maryam T Dandana, Touhami Mahjoub, Wassim Y Almawi P4 Effect of environmental factors on gene-gene and gene-environment reactions: model and theoretical study applied to environmental interventions using genotype S. Abdalla, M. Nabil Al-Aama P5 Genomics and transcriptomic analysis of imatinib resistance in gastrointestinal stromal tumor Asmaa Elzawahry, Tsuyoshi Takahashi, Sachiyo Mimaki, Eisaku Furukawa, Rie Nakatsuka, Isao Kurosaka, Takahiko Nishigaki, Hiromi Nakamura, Satoshi Serada, Tetsuji Naka, Seiichi Hirota, Tatsuhiro Shibata, Katsuya Tsuchihara, Toshirou Nishida, Mamoru Kato P6 In-Silico analysis of putative HCV epitopes against Pakistani human leukocyte antigen background: an approach towards development of future vaccines for Pakistani population Sajid Mehmood, Naeem Mahmood Ashraf, Awais Asif, Muhammad Bilal, Malik Siddique Mehmood, Aadil Hussain P7 Inhibition of AChE and BuChE with the natural compounds of Bacopa monerri for the treatment of Alzheimer’s disease: a bioinformatics approach Qazi Mohammad Sajid Jamal, Mughees Uddin Siddiqui, Mohammad A. Alzohairy, Mohammad A. Al Karaawi P8 Her2 expression in urothelial cell carcinoma of the bladder in Saudi Arabia Taoufik Nedjadi, Jaudah Al-Maghrabi, Mourad Assidi, Heba Al-Khattabi, Adel Al-Ammari, Ahmed Al-Sayyad, Abdelbaset Buhmeida, Mohammed Al-Qahtani P9 Association of angiotensinogen single nucleotide polymorphisms with Preeclampsia in patients from North Africa Hédia Zitouni, Nozha Raguema, Marwa Ben Ali, Wided Malah, Raja Lfalah, Wassim Almawi, Touhami Mahjoub P10 Systems biology analysis reveals relations between normal skin, benign nevi and malignant melanoma Mohammed Elanbari, Andrey Ptitsyn P11 The apoptotic effect of thymoquinone in Jurkat cells Sana Mahjoub, Rabeb El Ghali, Bechir Achour, Nidhal Ben Amor, Mourad Assidi, Brahim N'siri, Hamid Morjani P12 Sonic hedgehog contributes in bladder cancer invasion in Saudi Arabia Taoufik Nedjadi, Adel Al-Ammari, Ahmed Al-Sayyad, Nada Salem, Esam Azhar, Jaudah Al-Maghrabi P13 Association of Interleukin 18 gene promoter polymorphisms - 607A/C and -137 G/C with colorectal cancer onset in a sample of Tunisian population Vera Chayeb, Maryam Dendena, Hedia Zitouni, Khedija Zouari-Limayem, Touhami Mahjoub P14 Pathological expression of interleukin-6, -11, leukemia inhibitory factor and their receptors in tubal gestation with and without tubal cytomegalovirus infection Bassem Refaat, Ahmed M Ashshi, Sarah A Batwa P15 Phenotypic and genetic profiling of avian pathogenic and human diarrhegenic Escherichia coli in Egypt Hazem Ramadan, Amal Awad, Ahmed Ateya P16 Cancer-targeting dual gene virotherapy as a promising therapeutic strategy for treatment of hepatocellular carcinoma Adel Galal Ahmed El-Shemi, Ahmad Ashshi, Mohammed Basalamah, Youjin Na, Chae-Ok YUN P17 Cancer dual gene therapy with oncolytic adenoviruses expressing TRAIL and IL-12 transgenes markedly eradicated human hepatocellular carcinoma both in vitro and in vivo Adel Galal Ahmed El-Shemi, Ahmad Ashshi, Mohammed Basalamah, Youjin Na, Chae-Ok Yun P18 Therapy with paricalcitol attenuates tumor growth and augments tumoricidal and anti-oncogenic effects of 5-fluorouracil on animal model of colon cancer Adel Galal El-Shemi, Bassem Refaat, Osama Kensara, Amr Abdelfattah P19 The effects of Rubus idaeus extract on normal human lymphocytes and cancer cell line Batol Imran Dheeb, Mohammed M. F. Al-Halbosiy, Rghad Kadhim Al lihabi, Basim Mohammed Khashman P20 Etanercept, a TNF-alpha inhibitor, alleviates mechanical hypersensitivity and spontaneous pain in a rat model of chemotherapy-induced neuropathic pain Djouhri, Laiche, Chaudhary Adeel, Nedjadi, Taoufik P21 Sleeping beauty mutagenesis system identified genes and neuronal transcription factor network involved in pediatric solid tumour (medulloblastoma) Hani Al-Afghani, Maria Łastowska, Haya H Al-Balool, Harsh Sheth, Emma Mercer, Jonathan M Coxhead, Chris PF Redfern, Heiko Peters, Alastair D Burt, Mauro Santibanez-Koref, Chris M Bacon, Louis Chesler, Alistair G Rust, David J Adams, Daniel Williamson, Steven C Clifford, Michael S Jackson P22 Involvement of interleukin-1 in vitiligo pathogenesis Mala Singh, Mohmmad Shoab Mansuri, Shahnawaz D. Jadeja, Hima Patel, Yogesh S. Marfatia, Rasheedunnisa Begum P23 Cytogenetics abnormalities in 12,884 referred population for chromosomal analysis and the role of FISH in refining the diagnosis (cytogenetic experience 2004-2013) Amal M Mohamed, Alaa K Kamel, Nivin A Helmy, Sayda A Hammad, Hesham F Kayed, Marwa I Shehab, Assad El Gerzawy, Maha M. Ead, Ola M Ead, Mona Mekkawy, Innas Mazen, Mona El-Ruby P24 Analysis of binding properties of angiotensin-converting enzyme 2 through in silico method S. M. A. Shahid, Qazi Mohammad Sajid Jamal, J. M. Arif, Mohtashim Lohani P25 Relationship of genetics markers cis and trans to the β-S globin gene with fetal hemoglobin expression in Tunisian sickle cell patients Moumni Imen, Chaouch Leila, Ouragini Houyem, Douzi Kais, Chaouachi Dorra Mellouli Fethi, Bejaoui Mohamed, Abbes Salem P26 Analysis of estrogen receptor alpha gene polymorphisms in breast cancer: link to genetic predisposition in Sudanese women Areeg Faggad, Amanuel T Gebreslasie, Hani Y Zaki, Badreldin E Abdalla P27 KCNQI gene polymorphism and its association with CVD and T2DM in the Saudi population Maha S AlShammari, Rhaya Al-Ali, Nader Al-Balawi , Mansour Al-Enazi, Ali Al-Muraikhi, Fadi Busaleh, Ali Al-Sahwan, Francis Borgio, Abdulazeez Sayyed, Amein Al-Ali, Sadananda Acharya P28 Clinical, neuroimaging and cytogenetic study of a patient with microcephaly capillary malformation syndrome Maha S. Zaki, Hala T. El-Bassyouni, Marwa I. Shehab P29 Altered expression of CD200R1 on dendritic cells of patients with inflammatory bowel diseases: in silico investigations and clinical evaluations Mohammed F. Elshal, Kaleemuddin M., Alia M. Aldahlawi, Omar Saadah, J. Philip McCoy P30 Development of real time PCR diagnostic protocol specific for the Saudi Arabian H1N1 viral strains Adel E El-Tarras, Nabil S Awad, Abdulla A Alharthi, Mohamed M M Ibrahim P31 Identification of novel genetic variations affecting Osteoarthritis patients Haneen S Alsehli, Ashraf Dallol, Abdullah M Gari, Mohammed M Abbas, Roaa A Kadam, Mazen M. Gari, Mohmmed H Alkaff, Adel M Abuzenadah, Mamdooh A Gari P32 An integrated database of GWAS SNVs and their evolutionary properties Heba Abusamra, Sajjad Karim, Hend F Nour eldin, Elham M Alhathli, Nada Salem, Sudhir Kumar, Mohammed H Al-Qahtani P33 Familial hypercholesterolemia in Saudi Arabia: prime time for a national registry and genetic analysis Fatima A. Moradi, Omran M. Rashidi, Zuhier A. Awan P34 Comparative genomics and network-based analyses of early hepatocellular carcinoma Ibrahim Hamza Kaya, Olfat Al-Harazi, Dilek Colak P35 A TALEN-based oncolytic viral vector approach to knock out ABCB1 gene mediated chemoresistance in cancer stem cells Nabila A Alkousi, Takis Athanasopoulos P36 Cartilage differentiation and gene expression of synovial fluid mesenchymal stem cells derived from osteoarthritis patients Afnan O Bahmaid, Etimad A Alhwait, Mamdooh A Gari, Haneen S Alsehli, Mohammed M Abbas, Mohammed H Alkaf, Roaa Kadam, Ashraf Dallol, Gauthaman Kalamegam P37 E-GRASP: Adding an evolutionary component to the genome-wide repository of associations (GRASP) resource Hend F Nour Eldin, Sajjad Karim, Heba Abusamra, Elham Alhathli, Nada Salem, Mohammed H Al-Qahtani, Sudhir Kumar P38 Screening of AGL gene mutation in Saudi family with glycogen storage disease Type III Salma N Alsayed, Fawziah H Aljohani, Samaher M Habeeb, Rawan A Almashali, Sulman Basit, Samia M Ahmed P39 High throughput proteomic data suggest modulation of cAMP dependent protein kinase A and mitochondrial function in infertile patients with varicocele Rakesh Sharma, Ashok Agarwal, Damayanthi Durairajanayagam, Luna Samanta, Muhammad Abu-Elmagd, Adel M. Abuzenadah, Edmund S. Sabanegh, Mourad Assidi, Mohammed Al-Qahtani P40 Significant protein profile alterations in men with primary and secondary infertility Ashok Agarwal, Rakesh Sharma, Luna Samanta, Damayanthi Durairajanayagam, Mourad Assidi, Muhammad Abu-Elmagd, Mohammed Al-Qahtani, Adel M. Abuzenadah, Edmund S. Sabanegh P41 Spermatozoa maturation in infertile patients involves compromised expression of heat shock proteins Luna Samanta, Ashok Agarwal, Rakesh Sharma, Zhihong Cui, Mourad Assidi, Adel M. Abuzenadah, Muhammad Abu-Elmagd, Mohammed Al-Qahtani P42 Array comparative genomic hybridization approach to search genomic answers for spontaneous recurrent abortion in Saudi Arabia Alaa A Alboogmi, Nuha A Alansari, Maha M Al-Quaiti, Fai T Ashgan, Afnan Bandah, Hasan S Jamal, Abdullraheem Rozi, Zeenat Mirza, Adel M Abuzenadah, Sajjad Karim, Mohammed H Al-Qahtani P43 Global gene expression profiling of Saudi kidney cancer patients Sajjad Karim, Hans-Juergen Schulten, Ahmad J Al Sayyad, Hasan MA Farsi, Jaudah A Al-Maghrabi, Zeenat Mirza, Reem Alotibi, Alaa Al-Ahmadi, Nuha A Alansari, Alaa A Albogmi, Maha M Al-Quaiti, Fai T Ashgan, Afnan Bandah, Mohammed H Al-Qahtani P44 Downregulated StAR gene and male reproductive dysfunction caused by nifedipine and ethosuximide Rasha A Ebiya, Samia M Darwish, Metwally M. Montaser P45 Clustering based gene expression feature selection method: A computational approach to enrich the classifier efficiency of differentially expressed genes Heba Abusamra, Vladimir B. Bajic P46 Prognostic significance of Osteopontin expression profile in colorectal carcinoma Jaudah Al-Maghrabi, Wafaey Gomaa, Mehenaz Hanbazazh, Mahmoud Al-Ahwal, Asia Al-Harbi, Wejdan Al-Qahtani, Saher Hakamy, Ghali Baba, Abdelbaset Buhmeida, Mohammed Al-Qahtani P47 High Glypican-3 expression pattern predicts longer disease-specific survival in colorectal carcinoma Jaudah Al-Maghrabi, Abdullah Al-Harbi, Mahmoud Al-Ahwal, Asia Al-Harbi, Wejdan Al-Qahtani, Sahar Hakamy, Ghalia Baba, Abdelbaset Buhmeida, Mohammed Al-Qahtani P48 An evolutionary re-assessment of GWAS single nucleotide variants implicated in the Cholesterol traits Elham M Alhathli, Sajjad Karim, Nada Salem, Hend Nour Eldin, Heba Abusamra, Sudhir Kumar, Mohammed H Al-Qahtani P49 Derivation and characterization of human Wharton’s jelly stem cells (hWJSCs) in vitro for future therapeutic applications Aisha A Alyamani, Gauthaman Kalamegam, Etimad A Alhwait, Mamdooh A Gari, Mohammed M Abbas, Mohammed H Alkaf, Haneen S Alsehli, Roaa A Kadam, Mohammed Al-Qahtani P50 Attitudes of healthcare students toward biomedical research in the post-genomic era Rawan Gadi, Abdelbaset Buhmeida, Mourad Assidi , Adeel Chaudhary, Leena Merdad P51 Evaluation of the immunomodulatory effects of thymoquinone on human bone marrow mesenchymal stem cells (BM-MSCs) from osteoarthritic patients Saadiah M Alfakeeh, Etimad A Alhwait, Mamdooh A Gari, Mohammed M Abbas, Mohammed H Alkaf, Haneen S Alsehli, Roaa Kadam, Gauthaman Kalamegam P52 Implication of IL-10 and IL-28 polymorphism with successful anti-HCV therapy and viral clearance Rubi Ghazala, Shilu Mathew, M.Haroon Hamed, Mourad Assidi, Mohammed Al-Qahtani, Ishtiaq Qadri P53 Selection of flavonoids against obesity protein (FTO) using in silico and in vitro approaches Shilu Mathew, Lobna Mira, Manal Shaabad, Shireen Hussain, Mourad Assidi, Muhammad Abu-Elmagd, Mohammed Al-Qahtani P54 Computational selection and in vitro validation of flavonoids as new antidepressant agents Shilu Mathew, Manal Shaabad, Lobna Mira, Shireen Hussain, Mourad Assidi, Muhammad Abu-Elmagd, Mohammed Al-Qahtani P55 In Silico prediction and prioritization of aging candidate genes associated with progressive telomere shortening Ahmed Rebai, Mourad Assidi, Abdelbaset Buhmeida, Muhammad Abu-Elmagd, Ashraf Dallol, Jerry W Shay P56 Identification of new cancer testis antigen genes in diverse types of malignant human tumour cells Mikhlid H Almutairi P57 More comprehensive forensic genetic marker analyses for accurate human remains identification using massively parallel sequencing (MPS) Angie Ambers, Jennifer Churchill, Jonathan King, Monika Stoljarova, Harrell Gill-King, Mourad Assidi, Muhammad Abu-Elmagd, Abdelbaset Buhmeida, Muhammad Al-Qatani, Bruce Budowle P58 Flow cytometry approach towards treatment men infertility in Saudi Arabia Muhammad Abu-Elmagd, Farid Ahmed, Ashraf Dallol, Mourad Assidi, Taha Abo Almagd, Sahar Hakamy, Ashok Agarwal, Muhammad Al-Qahtani, Adel Abuzenadah P59 Tissue microarray based validation of CyclinD1 expression in renal cell carcinoma of Saudi kidney patients Sajjad Karim, Hans-Juergen Schulten, Ahmad J Al Sayyad, Hasan MA Farsi, Jaudah A Al-Maghrabi, Abdelbaset Buhmaida, Zeenat Mirza, Reem Alotibi, Alaa Al-Ahmadi, Nuha A Alansari, Alaa A Albogmi, Maha M Al-Quaiti, Fai T Ashgan, Afnan Bandah, Mohammed H Al-Qahtani P60 Assessment of gold nanoparticles in molecular diagnostics and DNA damage studies Rukhsana Satar, Mahmood Rasool, Waseem Ahmad, Nazia Nazam, Mohamad I Lone, Muhammad I Naseer, Mohammad S Jamal, Syed K Zaidi, Peter N Pushparaj, Mohammad A Jafri, Shakeel A Ansari, Mohammed H Alqahtani P61 Surfing the biospecimen management and processing workflow at CEGMR Biobank Hanan Bashier, Abrar Al Qahtani, Shilu Mathew, Amal M. Nour, Heba Alkhatabi, Adel M. Abu Zenadah, Abdelbaset Buhmeida, Mourad Assidi, Muhammed Al Qahtani P62 Autism Spectrum Disorder: knowledge, attitude and awareness in Jeddah, Kingdom of Saudi Arabia Muhammad Faheem, Shilu Mathew, Shiny Mathew, Peter Natesan Pushparaj, Mohammad H. Al-Qahtani P63 Simultaneous genetic screening of the coagulation pathway genes using the Thromboscan targeted sequencing panel Hani A. Alhadrami, Ashraf Dallol, Adel Abuzenadah P64 Genome wide array comparative genomic hybridization analysis in patients with syndromic congenital heart defects Ibtessam R. Hussein, Adeel G. Chaudhary, Rima S Bader, Randa Bassiouni, Maha Alquaiti, Fai Ashgan, Hans Schulten, Mohamed Nabil Alama, Mohammad H. Al Qahtani P65 Toxocogenetic evaluation of 1, 2-Dichloroethane in bone marrow, blood and cells of immune system using conventional, molecular and flowcytometric approaches Mohammad I Lone, Nazia Nizam, Waseem Ahmad, Mohammad A Jafri, Mahmood Rasool, Shakeel A Ansari, Muhammed H Al-Qahtani P66 Molecular cytogenetic diagnosis of sexual development disorders in newborn: A case of ambiguous genitalia Eradah Alshihri, Muhammad Abu-Elmagd, Lina Alharbi, Mourad Assidi, Mohammed Al-Qahtani P67 Identification of disease specific gene expression clusters and pathways in hepatocellular carcinoma using In Silico methodologies Shilu Mathew, Peter Pushparaj Natesan, Muhammed Al Qahtani P68 Human Wharton’s Jelly stem cell conditioned medium inhibits primary ovarian cancer cells in vitro: Identification of probable targets and mechanisms using systems biology Gauthaman Kalamegam, Peter Natesan Pushparaj, Fazal Khan, Roaa Kadam, Farid Ahmed, Mourad Assidi, Khalid Hussain Wali Sait, Nisreen Anfinan, Mohammed Al Qahtani P69 Mutation spectrum of ASPM (Abnormal Spindle-like, Microcephaly-associated) gene in Saudi Arabian population Muhammad I Naseer, Adeel G Chaudhary, Mohammad S Jamal, Shilu Mathew, Lobna S Mira, Peter N Pushparaj, Shakeel A Ansari, Mahmood Rasool, Mohammed H AlQahtani P70 Identification and characterization of novel genes and mutations of primary microcephaly in Saudi Arabian population Muhammad I Naseer, Adeel G Chaudhary, Shilu Mathew, Lobna S Mira, Mohammad S Jamal, Sameera Sogaty, Randa I Bassiouni, Mahmood Rasool, Mohammed H AlQahtani P71 Molecular genetic analysis of hereditary nonpolyposis colorectal cancer (Lynch Syndrome) in Saudi Arabian population Mahmood Rasool, Shakeel A Ansari, Mohammad S Jamal, Peter N Pushparaj, Abdulrahman MS Sibiani, Waseem Ahmad, Abdelbaset Buhmeida, Mohammad A Jafri, Mohiuddin K Warsi, Muhammad I Naseer, Mohammed H Al-Qahtani P72 Function predication of hypothetical proteins from genome database of chlamydia trachomatis Rubi, Kundan Kumar, Ahmad AT Naqvi, Faizan Ahmad, Md I Hassan, Mohammad S Jamal, Mahmood Rasool, Mohammed H AlQahtani P73 Transcription factors as novel molecular targets for skin cancer Ashraf Ali, Jummanah Jarullah, Mahmood Rasool, Abdelbasit Buhmeida, Shahida Khan, Ghufrana Abdussami, Maryam Mahfooz, Mohammad A Kamal, Ghazi A Damanhouri, Mohammad S Jamal P74 An In Silico analysis of Plumbagin binding to apoptosis executioner: Caspase-3 and Caspase-7 Bushra Jarullah, Jummanah Jarullah, Mohammad SS Jarullah, Ashraf Ali, Mahmood Rasool, Mohammad S Jamal P75 Single cell genomics applications for preimplantation genetic screening optimization: Comparative analysis of whole genome amplification technologies Mourad Assidi, Muhammad Abu-Elmagd, Osama Bajouh, Peter Natesan Pushparaj, Mohammed Al-Qahtani, Adel Abuzenadah P76 ZFP36 regulates miRs-34a in anti-IgM triggered immature B cells Mohammad S Jamal, Jummanah Jarullah, Abdulah EA Mathkoor, Hashim MA Alsalmi, Anas MM Oun, Ghazi A Damanhauri, Mahmood Rasool, Mohammed H AlQahtani P77 Identification of a novel mutation in the STAMBP gene in a family with microcephaly-capillary malformation syndrome Muhammad I. Naseer, Mahmood Rasool, Sameera Sogaty, Adeel G. Chudhary, Yousif A. Abutalib, Daniele Merico, Susan Walker, Christian R. Marshall, Mehdi Zarrei, Stephen W. Scherer, Mohammad H. Al-Qahtani P78 Copy number variations in Saudi patients with intellectual disability and epilepsy Muhammad I. Naseer, Muhammad Faheem, Adeel G. Chaudhary, Mahmood Rasool, Gauthaman Kalamegam, Fai Talal Ashgan, Mourad Assidi, Farid Ahmed, Syed Kashif Zaidi, Mohammed M. Jan, Mohammad H. Al-Qahtani P79 Prognostic significance of CD44 expression profile in colorectal carcinoma Maryam Al-Zahrani, Sahira Lary, Sahar Hakamy, Ashraf Dallol, Mahmoud Al-Ahwal, Jaudah Al-Maghrabi, Emmanuel Dermitzakis, Adel Abuzenadah, Abdelbaset Buhmeida, Mohammed Al-Qahtani P80 Association of the endothelial nitric oxide synthase (eNOS) gene G894T polymorphism with hypertension risk and complications Abeer A Al-refai, Mona Saleh, Rehab I Yassien, Mahmmoud Kamel, Rabab M Habeb P81 SNPs array to screen genetic variation among diabetic patients Najlaa Filimban, Ashraf Dallol, Nadia Ghannam, Mohammed Al-Qahtani, Adel Mohammed Abuzenadah P82 Detection and genotyping of Helicobacter pylori among gastric cancer patients from Saudi Arabian population Fehmida Bibi, Sana Akhtar, Esam I. Azhar, Muhammad Yasir, Muhammad I. Nasser, Asif A. Jiman-Fatani, Ali Sawan P83 Antimicrobial drug resistance and molecular detection of susceptibility to Fluoroquinolones among clinical isolates of Salmonella species from Jeddah-Saudi Arabia Ruaa A Lahzah, Asho Ali P84 Identification of the toxic and virulence nature of MAP1138c protein of Mycobacterium avium subsp. paratuberculosis Syed A Hassan, Seyed E Hasnain, Iftikhar A Tayubi, Hamza A Abujabal, Alaa O Magrabi P85 In vitro and in silico evaluation of miR137 in human breast cancer Fazal Khan, Gauthaman Kalamegam, Peter Natesan Pushparaj, Adel Abuzenada, Taha Abduallah Kumosani, Elie Barbour, Mohammed Al-Qahtani P86 Auruka gene is over-expressed in Saudi breast cancer Manal Shabaad, Shilu Mathew, Ashraf Dallol, Adnan Merdad, Abdelbaset Buhmeida, Mohammed Al-Qahtani P87 The potential of immunogenomics in personalized healthcare Mourad Assidi, Muhammad Abu-Elmagd, Kalamegam Gauthaman, Mamdooh Gari, Adeel Chaudhary, Adel Abuzenadah, Peter Natesan Pushparaj, Mohammed Al-Qahtani P88 In Silico physiochemical and structural characterization of a putative ORF MAP0591 and its implication in the pathogenesis of Mycobacterium paratuberculosis in ruminants and humans Syed A Hassan, Iftikhar A Tayubi, Hani MA Aljahdali P89 Effects of heat shock on human bone marrow mesenchymal stem cells (BM-MSCs): Implications in regenerative medicine Reham Al Nono, Mamdooh Gari, Haneen Alsehli, Farid Ahmed, Mohammed Abbas, Gauthaman Kalamegam, Mohammed Al-Qahtani P90 In Silico analyses of the molecular targets of Resveratrol unravels its importance in mast cell mediated allergic responses Shilu Mathew, Fazal Khan, Mahmood Rasool, Mohammed Sarwar Jamal, Muhammad Imran Naseer, Zeenat Mirza, Sajjad Karim, Shakeel Ansari, Mourad Assidi, Gauthaman Kalamegam, Mamdooh Gari, Adeel Chaudhary, Adel Abuzenadah, Peter Natesan Pushparaj, Mohammed Al-Qahtani P91 Effects of environmental particulate matter on bone-marrow mesenchymal stem cells Muhammad Abu-Elmagd, Gauthaman Kalamegam, Roaa Kadam, Mansour A Alghamdi, Magdy Shamy, Max Costa, Mamdouh I Khoder, Mourad Assidi, Peter Natesan Pushparaj, Mamdooh Gari, Mohammed Al-Qahtani P92 Distinctive charge clusters in human virus proteomes Najla Kharrat, Sabrine Belmabrouk, Rania Abdelhedi, Riadh Benmarzoug, Mourad Assidi, Mohammed H. Al Qahtani, Ahmed Rebai P93 In vitro experimental model and approach in identification of new biomarkers of inflammatory forms of arthritis Ghazi Dhamanhouri, Peter Natesan Pushparaj, Abdelwahab Noorwali, Mohammad Khalid Alwasiyah, Afnan Bahamaid, Saadiah Alfakeeh, Aisha Alyamani, Haneen Alsehli, Mohammed Abbas, Mamdooh Gari, Ali Mobasheri, Gauthaman Kalamegam, Mohammed Al-Qahtani P94 Molecular docking of GABAA receptor subunit γ-2 with novel anti-epileptic compounds Muhammad Faheem, Shilu Mathew, Peter Natesan Pushparaj, Mohammad H. Al-Qahtani P95 Breast cancer knowledge, awareness, and practices among Saudi females residing in Jeddah Shilu Mathew, Muhammad Faheem, Shiny Mathew, Peter Natesan Pushparaj, Mohammad H. Al-Qahtani P96 Anti-inflammatory role of Sesamin by Attenuation of Iba1/TNF-α/ICAM-1/iNOS signaling in Diabetic Retinopathy Mohammad Sarwar Jamal, Syed Kashif Zaidi, Raziuddin Khan, Kanchan Bhatia, Mohammed H. Al-Qahtani, Saif Ahmad P97 Identification of drug lead molecule against vp35 protein of Ebola virus: An In-Silico approach Iftikhar AslamTayubi, Manish Tripathi, Syed Asif Hassan, Rahul Shrivastava P98 An approach to personalized medicine from SNP-calling through disease analysis using whole exome-sequencing of three sub-continental populations Iftikhar A Tayubi, Syed Hassan, Hamza A.S Abujabal P99 Low versus high frequency of Glucose –6 – Phosphate Dehydrogenase (G6PD) deficiency in urban against tribal population of Gujarat – A signal to natural selection Ishani Shah, Bushra Jarullah, Mohammad S Jamal, Jummanah Jarullah P100 Spontaneous preterm birth and single nucleotide gene polymorphisms: a recent update Ishfaq A Sheikh, Ejaz Ahmad, Mohammad S Jamal, Mohd Rehan, Muhammad Abu-Elmagd, Iftikhar A Tayubi, Samera F AlBasri, Osama S Bajouh, Rola F Turki, Adel M Abuzenadah, Ghazi A Damanhouri, Mohd A Beg, Mohammed Al-Qahtani P101 Prevalence of congenital heart diseases among Down syndrome cases in Saudi Arabia: role of molecular genetics in the pathogenesis Sahar AF Hammoudah, Khalid M AlHarbi, Lama M El-Attar, Ahmed MZ Darwish P102 Combinatorial efficacy of specific pathway inhibitors in breast cancer cells Sara M Ibrahim, Ashraf Dallol, Hani Choudhry, Adel Abuzenadah, Jalaludden Awlia, Adeel Chaudhary, Farid Ahmed, Mohammed Al-Qahtani P103 MiR-143 and miR-145 cluster as potential replacement medicine for the treatment of cancer Mohammad A Jafri, Muhammad Abu-Elmagd, Mourad Assidi, Mohammed Al-Qahtani P104 Metagenomic profile of gut microbiota during pregnancy in Saudi population Imran khan, Muhammad Yasir, Esam I. Azhar, Sameera Al-basri, Elie Barbour, Taha Kumosani P105 Exploration of anticancer targets of selected metabolites of Phoenix dactylifera L. using systems biological approaches Fazal Khan, Gauthaman Kalamegam, Peter Natesan Pushparaj, Adel Abuzenada, Taha Abduallah Kumosani, Elie Barbour P106 CD226 and CD40 gene polymorphism in susceptibility to Juvenile rheumatoid arthritis in Egyptian patients Heba M. EL Sayed, Eman A. Hafez P107 Paediatric exome sequencing in autism spectrum disorder ascertained in Saudi families Hans-Juergen Schulten, Aisha Hassan Elaimi, Ibtessam R Hussein, Randa Ibrahim Bassiouni, Mohammad Khalid Alwasiyah, Richard F Wintle, Adeel Chaudhary, Stephen W Scherer, Mohammed Al-Qahtani P108 Crystal structure of the complex formed between Phospholipase A2 and the central core hydrophobic fragment of Alzheimer’s β- amyloid peptide: a reductionist approach Zeenat Mirza, Vikram Gopalakrishna Pillai, Sajjad Karim, Sujata Sharma, Punit Kaur, Alagiri Srinivasan, Tej P Singh, Mohammed Al-Qahtani P109 Differential expression profiling between meningiomas from female and male patients Reem Alotibi, Alaa Al-Ahmadi, Fatima Al-Adwani, Deema Hussein, Sajjad Karim, Mona Al-Sharif, Awatif Jamal, Fahad Al-Ghamdi, Jaudah Al-Maghrabi, Saleh S Baeesa, Mohammed Bangash, Adeel Chaudhary, Hans-Juergen Schulten, Mohammed Al-Qahtani P110 Neurospheres as models of early brain development and therapeutics Muhammad Faheem, Peter Natesan Pushparaj, Shilu Mathew, Taha Abdullah Kumosani, Gauthaman Kalamegam, Mohammed Al-Qahtani P111 Identification of a recurrent causative missense mutation p.(W577C) at the LDLR exon 12 in familial hypercholesterolemia affected Saudi families Faisal A Al-Allaf, Zainularifeen Abduljaleel, Abdullah Alashwal, Mohiuddin M. Taher, Abdellatif Bouazzaoui, Halah Abalkhail, Faisal A. Ba-Hammam, Mohammad Athar P112 Epithelial ovarian carcinoma (EOC): Systems oncological approach to identify diagnostic, prognostic and therapeutic biomarkers Gauthaman Kalamegam, Peter Natesan Pushparaj, Muhammad Abu-Elmagd, Farid Ahmed Khalid HussainWali Sait, Nisreen Anfinan, Mamdooh Gari, Adeel Chaudhary, Adel Abuzenadah, Mourad Assidi, Mohammed Al-Qahtani P113 Crohn’s disease phenotype in northern Tunisian population Naira Ben Mami, Yosr Z Haffani, Mouna Medhioub, Lamine Hamzaoui, Ameur Cherif, Msadok Azouz P114 Establishment of In Silico approaches to decipher the potential toxicity and mechanism of action of drug candidates and environmental agents Gauthaman Kalamegam, Fazal Khan, Shilu Mathew, Mohammed Imran Nasser, Mahmood Rasool, Farid Ahmed, Peter Natesan Pushparaj, Mohammed Al-Qahtani P115 1q Gain predicts poor prognosis marker for young breast cancer patients Shereen A Turkistany, Lina M Al-harbi, Ashraf Dallol, Jamal Sabir, Adeel Chaudhary, Adel Abuzenadah P116 Disorders of sex chromosomes in a diagnostic genomic medicine unit in Saudi Arabia: Prevalence, diagnosis and future guidelines Basmah Al-Madoudi, Bayan Al-Aslani, Khulud Al-Harbi, Rwan Al-Jahdali, Hanadi Qudaih, Emad Al Hamzy, Mourad Assidi, Mohammed Al Qahtani P117 Combination of WYE354 and Sunitinib demonstrate synergistic inhibition of acute myeloid leukemia in vitro Asad M Ilyas, Youssri Ahmed, Mamdooh Gari, Farid Ahmed, Mohammed Alqahtani P118 Integrated use of evolutionary information in GWAS reveals important SNPs in Asthma Nada Salem, Sajjad Karim, Elham M Alhathli, Heba Abusamra, Hend F Nour Eldin, Mohammed H Al-Qahtani, Sudhir Kumar P119 Assessment of BRAF, IDH1, IDH2, and EGFR mutations in a series of primary brain tumors Fatima Al-Adwani, Deema Hussein, Mona Al-Sharif, Awatif Jamal, Fahad Al-Ghamdi, Jaudah Al-Maghrabi, Saleh S Baeesa, Mohammed Bangash, Adeel Chaudhary, Mohammed Al-Qahtani, Hans-Juergen Schulten P120 Expression profiles distinguish oligodendrogliomas from glioblastoma multiformes with or without oligodendroglioma component Alaa Alamandi, Reem Alotibi, Deema Hussein, Sajjad Karim, Jaudah Al-Maghrabi, Fahad Al-Ghamdi, Awatif Jamal, Saleh S Baeesa, Mohammed Bangash, Adeel Chaudhary, Hans-Juergen Schulten, Mohammed Al-Qahtani P121 Hierarchical clustering in thyroid goiters and hyperplastic lesions Ohoud Subhi, Nadia Bagatian, Sajjad Karim, Adel Al-Johari, Osman Abdel Al-Hamour, Hosam Al-Aradati, Abdulmonem Al-Mutawa, Faisal Al-Mashat, Jaudah Al-Maghrabi, Hans-Juergen Schulten, Mohammad Al-Qahtani P122 Differential expression analysis in thyroiditis and papillary thyroid carcinomas with or without coexisting thyroiditis Nadia Bagatian, Ohoud Subhi, Sajjad Karim, Adel Al-Johari, Osman Abdel Al-Hamour, Abdulmonem Al-Mutawa, Hosam Al-Aradati, Faisal Al-Mashat, Mohammad Al-Qahtani, Hans-Juergen Schulten, Jaudah Al-Maghrabi P123 Metagenomic analysis of waste water microbiome in Sausdi Arabia Muhammad W shah, Muhammad Yasir, Esam I Azhar, Saad Al-Masoodi P124 Molecular characterization of Helicobacter pylori from faecal samples of Tunisian patients with gastric cancer Yosr Z Haffani, Msadok Azouz, Emna Khamla, Chaima Jlassi, Ahmed S. Masmoudi, Ameur Cherif, Lassaad Belbahri P125 Diagnostic application of the oncoscan© panel for the identification of hereditary cancer syndrome Shadi Al-Khayyat, Roba Attas, Atlal Abu-Sanad, Mohammed Abuzinadah, Adnan MerdadAshraf Dallol, Adeel Chaudhary, Mohammed Al-Qahtani, Adel Abuzenadah P126 Characterization of clinical and neurocognitive features in a family with a novel OGT gene missense mutation c. 1193G > A/ (p. Ala319Thr) Habib Bouazzi, Carlos Trujillo, Mohammad Khalid Alwasiyah, Mohammed Al-Qahtani P127 Case report: a rare homozygous deletion mutation of TMEM70 gene associated with 3-Methylglutaconic Aciduria and cataract in a Saudi patient Maha Alotaibi, Rami Nassir P128 Isolation and purification of antimicrobial milk proteins Ishfaq A Sheikh, Mohammad A Kamal, Essam H Jiffri, Ghulam M Ashraf, Mohd A Beg P129 Integrated analysis reveals association of ATP8B1 gene with colorectal cancer Mohammad A Aziz, Rizwan Ali, Mahmood Rasool, Mohammad S Jamal, Nusaibah samman, Ghufrana Abdussami, Sathish Periyasamy, Mohiuddin K Warsi, Mohammed Aldress, Majed Al Otaibi, Zeyad Al Yousef, Mohamed Boudjelal, Abdelbasit Buhmeida, Mohammed H Al-Qahtani, Ibrahim AlAbdulkarim P130 Implication of IL-10 and IL-28 polymorphism with successful anti-HCV therapy and viral clearance Rubi Ghazala, Shilu Mathew, M. Haroon Hamed, Mourad Assidi, Mohammed Al-Qahtani, Ishtiaq Qadri P131 Interactions of endocrine disruptor di-(2-ethylhexyl) phthalate (DEHP) and its metabolite mono-2-ethylhexyl phthalate (MEHP) with progesterone receptor Ishfaq A Sheikh, Muhammad Abu-Elmagd, Rola F Turki, Ghazi A Damanhouri, Mohd A. Beg P132 Association of HCV nucleotide polymorphism in the development of hepatocellular carcinoma Mohd Suhail, Abid Qureshi, Adil Jamal, Peter Natesan Pushparaj, Mohammad Al-Qahtani, Ishtiaq Qadri P133 Gene expression profiling by DNA microarrays in colon cancer treated with chelidonine alkaloid Mahmoud Z El-Readi, Safaa Y Eid, Michael Wink P134 Successful in vitro fertilization after eight failed trials Ahmed M. Isa, Lulu Alnuaim, Johara Almutawa, Basim Abu-Rafae, Saleh Alasiri, Saleh Binsaleh P135 Genetic sensitivity analysis using SCGE, cell cycle and mitochondrial membrane potential in OPs stressed leukocytes in Rattus norvegicus through flow cytometric input Nazia Nazam, Mohamad I Lone, Waseem Ahmad, Shakeel A Ansari, Mohamed H Alqahtani
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18. A CENTURY OF RINGING IN BRITAIN AND IRELAND.
- Author
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Redfern, Chris P. F., Clark, Jacquie A., Robinson, Robert A., and Baillie, Stephen R.
- Subjects
- *
RESEARCH methodology , *BIRD physiology - Abstract
An introduction to the journal is presented in which the author discusses reviews on the importance of research techniques particularly ringing, papers on history of ringing in Great Britain and Ireland, and papers that discusses aspect of birds such a migration, population, and conservation.
- Published
- 2009
19. Vitamin A and its natural derivatives.
- Author
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Redfern CPF
- Subjects
- Carotenoids, Retina, Retinaldehyde, Retinoids, Vitamin A
- Abstract
Vitamin A and derivatives, the natural retinoids, underpin signaling pathways of cellular differentiation, and are key chromophores in vision. These functions depend on transfer across membranes, and carrier proteins to shuttle retinoids to specific cell compartments. Natural retinoids, ultimately derived from plant carotenoids by metabolism to all-trans retinol, are lipophilic and consist of a cyclohexenyl (β-ionone) moiety linked to a polyene chain. This structure constrains the orientation of retinoids within lipid membranes. Cis-trans isomerization at double bonds of the polyene chain and s-cis/s-trans rotational isomerization at single bonds define the functional dichotomy of retinoids (signaling/vision) and specificities of interactions with specific carrier proteins and receptors. Metabolism of all-trans retinol to 11-cis retinal, transfer to photoreceptors, and removal and recycling of all-trans retinal generated by photoreceptor irradiation, is the key process underlying vision. All-trans retinol transferred into cells is metabolized to all-trans retinoic acid and shuttled to the cell nucleus to regulate gene expression controlling organ, tissue and cell differentiation, and cellular homeostasis. Research methods need to address the potential of photoisomerization in vitro to confound research results, and data should be interpreted in the context of membrane-association properties of retinoids and physiological concentrations in vivo. Despite a century of research, there are many fundamental questions of retinoid cellular biochemistry and molecular biology still to be answered. Computational modeling techniques will have an important role for understanding the nuances of vitamin A signaling and function., (© 2020 Elsevier Inc. All rights reserved.)
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- 2020
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20. Cell-type variation in stress responses as a consequence of manipulating GRP78 expression in neuroectodermal cells.
- Author
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Martin S, Lovat PE, and Redfern CP
- Subjects
- Biomarkers metabolism, Boronic Acids pharmacology, Bortezomib, Cell Death drug effects, Cell Line, Tumor, Cell Shape drug effects, Endoplasmic Reticulum Chaperone BiP, Endoplasmic Reticulum Stress drug effects, Fenretinide pharmacology, Gene Knockdown Techniques, Humans, Pyrazines pharmacology, RNA, Small Interfering metabolism, Unfolded Protein Response drug effects, Heat-Shock Proteins metabolism, Neural Plate cytology, Neural Plate metabolism, Stress, Physiological drug effects
- Abstract
Glucose-regulated protein 78 (GRP78) is a stress sensor which interacts with unfolded protein response (UPR) activators in the endoplasmic reticulum (ER). The aim of this study was to test the hypothesis that GRP78 has distinct functional roles in mediating the effects of ER stress in neuroblastoma compared to other neuroectodermal cancer types. GRP78 was knocked down or overexpressed in neuroectodermal tumor cell lines. Protein and transcript expression were measured using Western blotting, confocal microscopy, and real-time polymerase chain reaction; cell stress was assessed by measurement of oxidative stress and accumulation of ubiquitinated proteins and cell response by measurement of apoptosis and cell viability. Neuroblastoma cells were more sensitive to ER stress than melanoma and glioblastoma cells. GRP78 knockdown increased stress sensitivity of melanoma and glioblastoma cells, but not neuroblastoma cells. Over-expression of GRP78 decreased the stress sensitivity of melanoma and glioblastoma cells but, in contrast, increased the stress sensitivity of neuroblastoma cells by activation of caspase-3-independent cell death and substantially increased the expression of UPR activators, particularly inositol-requiring element 1 (IRE1). The results from this study suggest that cell-type specific differences in the relationships between GRP78 and the UPR activators, particularly IRE1, may determine differential sensitivity to ER stress., (© 2014 Wiley Periodicals, Inc.)
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- 2015
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21. Identification of a neuronal transcription factor network involved in medulloblastoma development.
- Author
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Lastowska M, Al-Afghani H, Al-Balool HH, Sheth H, Mercer E, Coxhead JM, Redfern CP, Peters H, Burt AD, Santibanez-Koref M, Bacon CM, Chesler L, Rust AG, Adams DJ, Williamson D, Clifford SC, and Jackson MS
- Subjects
- Animals, Brain Neoplasms diagnosis, Brain Neoplasms genetics, Brain Neoplasms metabolism, Brain Neoplasms pathology, Cell Differentiation physiology, Cell Proliferation physiology, Cerebellum metabolism, Cerebellum pathology, Disease Progression, Gene Expression, Humans, Insulin-Like Growth Factor II genetics, Insulin-Like Growth Factor II metabolism, Male, Medulloblastoma diagnosis, Medulloblastoma pathology, Mice, Mice, Inbred CBA, Mice, Transgenic, Patched Receptors, Patched-1 Receptor, Receptors, Cell Surface genetics, Receptors, Cell Surface metabolism, Medulloblastoma genetics, Medulloblastoma metabolism, Neurons metabolism, Transcription Factors genetics, Transcription Factors metabolism
- Abstract
Background: Medulloblastomas, the most frequent malignant brain tumours affecting children, comprise at least 4 distinct clinicogenetic subgroups. Aberrant sonic hedgehog (SHH) signalling is observed in approximately 25% of tumours and defines one subgroup. Although alterations in SHH pathway genes (e.g. PTCH1, SUFU) are observed in many of these tumours, high throughput genomic analyses have identified few other recurring mutations. Here, we have mutagenised the Ptch+/- murine tumour model using the Sleeping Beauty transposon system to identify additional genes and pathways involved in SHH subgroup medulloblastoma development., Results: Mutagenesis significantly increased medulloblastoma frequency and identified 17 candidate cancer genes, including orthologs of genes somatically mutated (PTEN, CREBBP) or associated with poor outcome (PTEN, MYT1L) in the human disease. Strikingly, these candidate genes were enriched for transcription factors (p=2x10-5), the majority of which (6/7; Crebbp, Myt1L, Nfia, Nfib, Tead1 and Tgif2) were linked within a single regulatory network enriched for genes associated with a differentiated neuronal phenotype. Furthermore, activity of this network varied significantly between the human subgroups, was associated with metastatic disease, and predicted poor survival specifically within the SHH subgroup of tumours. Igf2, previously implicated in medulloblastoma, was the most differentially expressed gene in murine tumours with network perturbation, and network activity in both mouse and human tumours was characterised by enrichment for multiple gene-sets indicating increased cell proliferation, IGF signalling, MYC target upregulation, and decreased neuronal differentiation., Conclusions: Collectively, our data support a model of medulloblastoma development in SB-mutagenised Ptch+/- mice which involves disruption of a novel transcription factor network leading to Igf2 upregulation, proliferation of GNPs, and tumour formation. Moreover, our results identify rational therapeutic targets for SHH subgroup tumours, alongside prognostic biomarkers for the identification of poor-risk SHH patients.
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- 2013
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22. The impact of retinoic acid treatment on the sensitivity of neuroblastoma cells to fenretinide.
- Author
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Armstrong JL, Martin S, Illingworth NA, Jamieson D, Neilson A, Lovat PE, Redfern CP, and Veal GJ
- Subjects
- Blotting, Western, Cell Line, Tumor, Chromatography, High Pressure Liquid, Drug Interactions, Fenretinide metabolism, Flow Cytometry, Humans, Neuroblastoma pathology, Antineoplastic Agents pharmacology, Apoptosis drug effects, Fenretinide pharmacology, Neuroblastoma metabolism, Tretinoin pharmacology
- Abstract
Despite the successful introduction of 13-cis retinoic acid (13cisRA) therapy for the treatment of neuroblastoma, approximately 50% patients do not respond or experience relapse. A retinoid analogue, fenretinide [N-(4-hydroxyphenyl) retinamide; 4-HPR] can induce apoptosis in neuroblastoma cell lines and could have clinical use after therapy with 13cisRA. However, there are important questions concerning potential retinoid drug interactions which need to be addressed. The aim of this study was to investigate the influence of retinoic acid pre-treatment on fenretinide-induced apoptosis and fenretinide metabolism in neuroblastoma cell lines. Apoptosis was measured by flow cytometry of propidium iodide-stained neuroblastoma cells and a live-cell imaging assay. Intracellular fenretinide metabolism was determined by HPLC analysis. Pre-treatment of neuroblastoma cell lines with retinoic acid (RA) resulted in a significant decrease in the apoptotic response to fenretinide in three of the four lines tested. Comparison between responsive and non-responsive cell lines suggested that RA sensitivity was required to promote fenretinide resistance, and that this was mediated by up-regulation of Bcl-2 and the inhibition of pro-apoptotic fenretinide signalling pathways. Induction of the oxidative metabolism of fenretinide after RA pre-treatment did not significantly impact on intracellular parent drug levels and is unlikely to explain the decreased apoptotic response observed. The interaction between RA and fenretinide could have important implications for the scheduling of fenretinide in therapeutic protocols for neuroblastoma.
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- 2012
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