Nobody downloaded yet

The effect of NO/cGMP system on sheep somatic cell differentiation in vitro - Literature review Example

Comments (0) Cite this document
The Effect of NO/cGMP System on Sheep Somatic Cell Differentiation In Vitro Student ID Number & Code Date Total Number of Words: 1,003 The ovarian follicles play a significant role in the production of oestradiol, androgen prercursors, and theca cells like the activin and inhibin (Driancourt, 2001)…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER91.9% of users find it useful
The effect of NO/cGMP system on sheep somatic cell differentiation in vitro
Read TextPreview

Extract of sample
"The effect of NO/cGMP system on sheep somatic cell differentiation in vitro"

Download file to see previous pages (2005) explained that the newly formed blood vessels makes it possible for the hormone-producing cells to collect enough oxygen, nutrients and other substances needed to release some reproductive hormones. During the follicular development, the density of the blood vessels that surrounds the dominant ovulatory follicle increases. In the absence of oxygen, Bianco et al. (2005) explained that cases of hypoxia is likely to happen. The hCG binds to all follicles in vitro whereas in vivo binds to more vascular follicles (Zeleznik and colleagues, 1981). Since follicle development plays a key role behind the success of both in vitro and in vivo process, several studies considered the process of regulating the development of the blood vessels as a useful strategy in promoting follicular maturation (Barboni et al., 2000; Neeman et al., 1997). Hormones like gonadotrophins help in regulating the development of the ovarian follicle through the classic endocrine mechanism. This is possible since gonadrotrophin can stimulate the initial growth stage of the follicles. Furthermore, the presence of gonadrotrophin will trigger the inner granulosa and cumulus cells to produce a higher level of VEGF. Neeman et al. (1997) explained that the presence of a high level of VEGF is necessary in controlling the angiogenic activity needed for the CL formation. It is also responsible in regulating the presence of both normal and abnormal angiogenesis (Dvorak, 1995; Ferrara, 1993) and the endothelial nitric oxide synthase (eNOS) expression and the production of nitric oxide (NO) (Reynolds et al., 2002). Furthremore, Shweiki and colleagues (1995) explained that a high level of VEGF mRNA is enough to normalize the oxygen levels in hypoxic cells. Recently, Ferrara et al. (2003) found out that the VEGF-A is responsible in regulating the formation of the ovarian blood vessels. In the absence of one of the VEGF allelles, embryonic development can be negatively affected (Ferrara et al., 1996). Given that some follicles are heavily dependent on the presence of gonadotrophin, several studies conclude that one of the main reasons why some follicles failed to mature is because of the absence of gonadotrophins (Driancourt, 2001; Goodman and Hodgen, 1983). The NO can be produced by the ovarian cells (Dave et al., 1997) particularly among the immature ovaries (Ellman et al., 1993) and in the different stages of the follicular development (Hattori et al., 1996). Since the main role of the NO/cGMP is regulating the blood pressure, several studies have closely examined the actual involvement of the cGMP in the transduction of NO in the ovary (Al-Gubory et al., 2005; Ponderato et al., 2000; Matsumi et al., 1998; Jablonka-Shariff and Olson, 1997; Zackrisson et al., 1996; Van Voorhis et al. 1995; Van Voorhis et al., 1994). The eNOS and iNOS isoforms expression can be found in the ovarian tissue of some species whereas the eNOS can be present in the ovarian follicles and CL during the oestrus cycle in different species (Al-Gubory et al., 2005). Van Voorhis et al. (1994) reported that the human granulose-luteal cells have eNOS isoform expression ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“The effect of NO/cGMP system on sheep somatic cell differentiation in Literature review”, n.d.)
The effect of NO/cGMP system on sheep somatic cell differentiation in Literature review. Retrieved from https://studentshare.org/biology/1462282-the-effect-of-no-cgmp-system-on-sheep-somatic-cell
(The Effect of NO/CGMP System on Sheep Somatic Cell Differentiation in Literature Review)
The Effect of NO/CGMP System on Sheep Somatic Cell Differentiation in Literature Review. https://studentshare.org/biology/1462282-the-effect-of-no-cgmp-system-on-sheep-somatic-cell.
“The Effect of NO/CGMP System on Sheep Somatic Cell Differentiation in Literature Review”, n.d. https://studentshare.org/biology/1462282-the-effect-of-no-cgmp-system-on-sheep-somatic-cell.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
The In-Vivo and In-Vitro Effects of Sildenafil (Viagra) on Oocyte and Embryo Development
Table of Contents 1. Introduction …………………………………………………………………………. 3 1.1 Infertility Problems in Women ……………………………………………. 3 1.2 General Overview of Physiology and Anatomy of Female Reproduction .
31 Pages(7750 words)Literature review
Fuel Cell Technology: A Comparative Evaluation for Applications in Building in Saudi Arabia
The author of the research paper "Fuel Cell Technology: A Comparative Evaluation for Applications in Building in Saudi Arabia" analyzes fuel cells that are used in Saudi Arabia. The main interest is that these fuel cells generate a large amount of heat, even more than required. The author also researches the topic of fuel commercialisation.
11 Pages(2750 words)Literature review
Calendar effects (seasonalities). January Effect , The Day of the Week Effect, The Holiday Effect
Not all but some of these anomalies are widely referred as calendar effects. Calendar anomalies such as the day of the week effect, monthly or January effect, the trading month effect, and holiday effect in stock exchange markets have perplexed financial economists for more than 50 years.
8 Pages(2000 words)Literature review
The Effect of Sildenafil on mouse oocyte development in vivo followed by in vitro culture until the blastocyst stage
The use of Viagra for recreational use is well documented, and the drug is widely used by men to treat erectile dysfunction. However, prolonged use by men could cause infertility. In a research by David Glenn, who works with the Queens
2 Pages(500 words)Literature review
Surface modification to control stem cell differentiation in vitro
The stem cells in mammals can be categorized into two main types i.e., the adult stem cells or the embryonic stem cells (Hook, 2011). The embryonic stem cells are isolated from the blastocysts inner cellular mass while the adult stem cells are located in several tissues where they function as a fixing system for the entire body, refilling adult tissues.
7 Pages(1750 words)Essay
Differentiation is defined "as a response to the cognitive, affective, social, and physical characteristics that distinguish what and how students learn." (Kaplan) To simplify, a classroom where students are provided with the same opportunity to learn, but are not expected to learn the same curriculum in the same manner at the same time is the perspective that demonstrates differentiation.
4 Pages(1000 words)Essay
Online E-Petition System
Most recently, at least in the past one and a half decade, the rise of the internet and the opportunities and benefits it came with tremendously changed
5 Pages(1250 words)Literature review
Adaptive E-commerce system
According to quote (year), one of the ways that companies have greatly benefited from technology is through the concept of electronic commerce (e-commerce).
20 Pages(5000 words)Literature review
The invitro effect of sildenafil citrate on the outcome of pregnancy in mice and offsprings
It is necessary to establish a normal uterine blood flow so as to ensure the development of a successful embryo. Around the world, many couples experience difficulty conceiving a child. As a result of the continual expansion of the assisted reproductive technologies (ART), people have learned to accept the practice of intracytoplasmic sperm injection (ICSI), gestational surrogacy, the zygote intrafallopian transfer, the gamete intrafallopian transfer (GIFT), oocyte, and embryo donation, gestational surrogacy, and cryopreservation (Zegers-Hochschild et al., 2009).
5 Pages(1250 words)Literature review
The effect of Sildenafil (viagra) on antral follicle development in sheep
In sheep, folliculogenesis is the key process in reproduction and involves the development of ovarian follicles from a small pre-antral follicle into pre-antral then into antral and finally the large pre-ovulatory follicle followed by the corpus luteum formation after ovulation.
4 Pages(1000 words)Literature review
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Literature review on topic The effect of NO/cGMP system on sheep somatic cell differentiation in vitro for FREE!
logo footer
Contact us:
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us