3 results on '"O G, George"'
Search Results
2. Selection signatures in melanocortin-1 receptor gene of turkeys (Meleagris gallopavo) raised in hot humid tropics
- Author
-
S O, Durosaro, B M, Ilori, O S, Iyasere, O G, George, O A, Adewumi, P A, Ojo, T A, Yusuff, M R, Adetifa, T S, Atanda, and M O, Ozoje
- Subjects
Male ,Plant Breeding ,Turkeys ,Base Sequence ,Animals ,Female ,Feathers ,Receptor, Melanocortin, Type 1 - Abstract
Feather colours are used by avian species for defense, adaptation and signaling. Melanocortin-1 receptor (MC1R) gene is one of the genes responsible for feather colour. This study identified selection signatures in MC1R gene of Nigerian indigenous turkeys (NIT) using British United turkeys (BUT) as control breed to investigate the evolutionary processes that have shaped NIT with various feather colours. Complete MC1R gene of 146 NIT (76 males and 70 females) and 32 BUT (18 males and 14 females) were sequenced. Transition/transversion and codon usage biases were predicted using MEGA v6 software. The selective force acting on the gene was predicted using HyPhy software. The FST values were estimated using Arlequin v3.5. The highest transition/transversion bias was predicted for white BUT (1.00) while the lowest was predicted for black NIT (0.50). Negative dN-dS values, indicative of purifying selection, were observed in MC1R gene of all the turkeys. The highest pairwise FST was observed between the MC1R gene of white BUT and black NIT while the least was observed between lavender NIT and white NIT. No recombination event was observed in black NIT and white BUT. The relative synonymous codon usage was the same among different colours for some codons. Presence of purifying selection in MC1R gene of all the turkeys with different feather colours confirms that the gene plays role in many biological processes such as feather colouration, behaviour, pain perception, immunity, growth and adaptation. The results also suggested that the genetic mechanisms generating different feather colours in turkeys are conserved.
- Published
- 2021
3. Ovarian Stimulation in Assisted Reproductive Technology Cycles for Varied Patient Profiles: An Indian Perspective.
- Author
-
Jirge PR, Patil MM, Gutgutia R, Shah J, Govindarajan M, Roy VS, Kaul-Mahajan N, and Sharara FI
- Abstract
Controlled ovarian stimulation has been an integral part of in vitro fertilisation (IVF) treatment cycles. Availability of different gonadotropins for ovarian stimulation and gonadotropin releasing hormone (GnRH) analogues for prevention of premature rise of leutinising hormone during follicular phase offer an opportunity to utilise them for a successful outcome in women with different subsets of ovarian response. Further, use of GnRH agonist as an alternative for human chorionic gonadotropin improves safety of ovarian stimulation in hyper-responders. Mild ovarian stimulation protocols have emerged as an alternative to conventional protocols in the recent years. Individualisation plays an important role in improving safety of IVF in hyper-responders while efforts continue to improve efficacy in poor responders. Some of the follicular and peri-ovulatory phase interventions may be associated with negative impact on the luteal phase and segmentalisation of the treatment with frozen embryo transfer may be an effective strategy in such a clinical scenario. This narrative review looks at the available evidence on various aspects of ovarian stimulation strategies and their consequences. In addition, it provides a concise summary of the evidence that has emerged from India on various aspects of ovarian stimulation., Competing Interests: Ferring organised a meeting of all authors and facilitated discussion and provided the assistance of a medical writing team whose role was limited to aiding the search strategy and creating the flow chart for search strategy. PRJ: Is the current Editor-in-Chief of the Journal of Human Reproductive Sciences. She has not received any monetary compensation for the article. She has been a faculty for symposiums organised by Ferring in the past. She has not had any role in the peer review/editorial process/decision making about the manuscript. NM: Has not received any monetary compensation for the article. She has received honorarium as a faculty from Ferring in the past. JS: He has not received any monetary support from Ferring for the writing up of this manuscript. MMP: Has been a part of Ferring C-Create programs and was invited to speak for Abbott scientific sessions. She has not received any monetary support from Ferring for the writing up of this manuscript. RG: Has been compensated by Ferring India, Merck and Abott India in the last year for various speaker/KOL assignments. He has not received any monetary support from Ferring for the writing up of this manuscript. VSR: She has received honorarium from Ferring Pharmaceutical Pvt Ltd as an expert in Embryology towards preparing/updating & being a member of Virtual ‘C-CREATE Scientific Committee meeting, but not received any funds for this particular project. MG: Never received any monetary support or honorarium from Ferring for writing up this Manuscript. Has been part of Ferring's C-Create teaching programs and part of invited faculty in educational programs conducted by Abbott, Astra Zeneca and Shield Pharma companies. FIS: Has received compensation from Ferring (but not for this article) as part of Ferring Speaker Bureau and investigator., (Copyright: © 2022 Journal of Human Reproductive Sciences.)
- Published
- 2022
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.