Reproductive biology

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

What are an embryo’s nutritional requirements prior to transfer to the mother?

During in vitro fertilisation processes, for the first few days of their lives, human embryos have to develop outside the mother’s body in special incubators.  Temperature and pH conditions need to be optimum and embryos also need to have access to all the necessary ingredients in order to feed and, in doing so, meet their […]

2020-10-22T09:08:27+02:002 de October de 2020|0 Comments

The advantages and disadvantages of transferring embryos during a natural or artificial cycle

Embryo transfer to the uterus is the pinnacle of all courses of assisted reproduction treatment. It cannot be left to chance. The endometrium needs to be receptive and facilitate embryo embedding.

The endometrium can be prepared with the aid of drugs (oestrogens) to simulate natural uterine behaviour – a substituted or artificial cycle – or transfer can be carried out […]

2020-10-07T11:27:02+02:001 de October de 2020|1 Comment

Assited Reproduction Techniques: FIV vs ICSI

Currently there are two main techniques used to achieve Assisted Reproduction IVF. These two techniques are conventional in vitro fertilization (IVF), and intracytoplasmic sperm injection (ICSI).

In IVF, the previously capacitated male sperm are deposited together with the oocytes of women in fertilization medium in order to achieve fertilization as similar as possible to that […]

2020-10-16T15:05:12+02:001 de October de 2020|0 Comments

Structural chromosome abnormalities: how do they impact the embryo and the carrier?

In comparison with the general population, there is a greater prevalence of chromosomal abnormalities amongst couples with reproduction issues. An analysis of the 46 chromosomes (23 pairs), DNA structures and highly-organised proteins that contain a living being’s genetic information is known as a karyotype. All that is needed is a simple blood sample so that […]

2020-09-21T13:37:57+02:0021 de September de 2020|0 Comments

ICSI indications

Use of the intracytoplasmic spermatozoa injection (ICSI) technique began in the 1990s. It has been successfully used to resolve most severe cases of male sterility. Here is some information about when we use the ICSI technique:

When is ICSI (Intracytoplasmic Sperm Injection) indicated?

Male Sterility

Oligozoospermia and criptozoospermia: a severe decrease in the number of […]

2020-09-21T12:29:08+02:005 de September de 2020|0 Comments

The miracle of embryo implantation

Embryo implantation is the process in which the human embryo adheres to the endometrium, where it continues developing. The first step of this process begins with the dialogue between the embryonic and maternal cells.

This is an extremely complex process that is currently only partially known and depends on the embryo quality, uterine receptivity and their […]

2020-09-11T11:47:25+02:003 de September de 2020|0 Comments

Advantages of Embryo Donation

One of the options for patients undergoing In Vitro Fertilization (IVF) techniques with remaining embryos, meaning high quality embryos that can be cryopreserved for the future, is to donate these embryos to other couples for reproductive purposes. In most cases, these embryos come from couples that have gone through double donation treatments (egg and sperm), […]

2020-09-10T12:14:10+02:002 de September de 2020|0 Comments

Antioxidant-rich diet and improved male fertility

Infertility as a disease, is defined as the impossibility of achieving pregnancy after
12 months of regular sexual intercourse without using any contraceptive method.
The term subfertility (Zegers-Hochschild 2017) can also be used. Therefore, subfertility
describes those couples with reduced fertility.

As per the male factor, many published studies explain
what could cause about the 50% of infertility cases. […]

2020-10-05T17:27:14+02:001 de September de 2020|0 Comments
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