Reproductive biology

What is hypospermia? How can it be detected? How does it affect my fertility?

The World Health Organization (WHO) indicates that a man has hypospermia when the semen sample he produces when he ejaculates is below 1.5 mL. A semen analysis needs to be performed in order to obtain a diagnosis. This test measures different semen parameters such as the volume of the ejaculate, the number of spermatozoa, sperm mobility and so on.

In order […]

2021-02-08T19:21:07+02:003 de February de 2021|0 Comments

What is ovarian drilling?

Ovarian drilling is treatment that is given to patients with polycystic ovary syndrome in order to encourage spontaneous ovulation.

Polycystic ovary syndrome (PCOS) is a common disorder and the women who have it can have a number of signs and symptoms. One of the most significant characteristics is that, in 50% of patients, there is a decrease […]

2021-02-01T14:45:56+02:001 de February de 2021|0 Comments

Estrogens: What are they, what is their function and what benefits can they bring?

What are oestrogens?

They are also sex hormones, along with progestogens and androgens. They come from the cholesterol’ s metabolism and are produced mainly in the ovaries and placenta, and, in smaller quantities in the adrenal glands.

What is the role of oestrogens?

Estrogens influence countless organs and tissues. Its main action occurs in the endometrium, […]

2021-01-04T17:35:48+02:004 de January de 2021|0 Comments

Radiation effects over male fertility (mobiles, Wi-Fi, microwaves, etc.)

Some
electronic devices, such as mobile phones, laptops, Wi-Fi, and microwave ovens,
generate non-ionizing radiation that can affect male fertility. This is
revealed by one of the latest reviews recently published by Agarwal’s research
group in Cleveland, USA (Kesari et al., 2018).

These devices generate radio frequency electromagnetic fields that applies a detrimental effect on different parameters that measure sperm […]

2021-02-01T11:00:19+02:001 de January de 2021|0 Comments

Time-lapse in assisted reproduction. Current situation

What is Time-Lapse in in vitro fertilization, IVF?

Time-lapse technology (TTL) consists of monitoring embryonic development and making a film
of embryonic evolution by means of a video camera introduced either in a
conventional incubator or incorporated in a special incubator. A special software
reconstructs the images and allows us to view the development of the embryos.

It is often […]

2021-02-24T12:37:24+02:0027 de December de 2020|0 Comments

Gestagens: progesterone and derivates

What are gestagens?

The gestagens hormones (also known as progestagens) main function, is to
maintain pregnancy (they are pro-gestational), and play a key role in the
menstrual cycle regulation.  

Gestagens are a class of steroid hormones, along estrogens, androgens,
minearlocorticoids and glucocorticoids. This big steroid hormones family is characterized by their basic 21-carbon
skeleton, called a pregnane skeleton
(C21). In similar manner, the […]

2021-01-08T15:38:22+02:002 de December de 2020|0 Comments

Assisted Reproduction legislation for women without a male partner

In modern society, the increasing demand for assisted reproduction techniques from single women and same-sex couples has become a reality. From the perspective of reproduction, women only need to receive the male gamete (sperm). For years, these couples have solved the problem in ways that have not always been medically or legally safe and have […]

2020-11-25T10:00:45+02:007 de November de 2020|0 Comments

Metabolomics: embryo nutrition in in vitro fertilisation (IVF)

One of the main limitations of assisted reproduction techniques are its embryo implantation failure rates. The implantation rate is the embryo’s ability to implant in the mother’s uterus. In other words, not all embryos are able to give rise to a pregnancy. Some have a greater chance of doing so than others. If it were possible to select […]

2020-12-01T12:52:34+02:003 de November de 2020|0 Comments

Why does embryonic arrest sometimes happen during in vitro development?

Many factors can intervene in arrest processes during embryo development which mean cell division is detained and, therefore, it is not possible to implant the embryo in the mother’s uterus and bring about a pregnancy.

In the first instance, the conditions for development are essential.  Embryos that develop in vitro are subjected to a number of artificial […]

2020-10-19T11:22:50+02:006 de October de 2020|2 Comments

Spermiogramme and Advanced Semen Studies (FISH AND TUNEL)

One of the
basic studies done to determine the male’s sperm quality is the seminogramme ,
also known as spermiogramme. We would need a sperm sample to carry it out (see how
to take the sample correctly). Sperm is analysed from macroscope and
microscope point of view.

What is the seminogramme?

The most relevant parameters of the study are threefold:

Sperm countSperm […]

2020-10-19T13:20:01+02:004 de October de 2020|4 Comments
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