11/11/2011

Want to know the sperm of "run speed"?

In men infertility laboratory examination, the brunt of course is that semen examined. The conventional semen check index includes: sperm quantity, colour and lustre, acidity, aggregation, liquefaction, sperm counts, sperm motility, etc. One sperm motility is very important a index, but in the past, all by inspection division in the microscope according to the results of the macroscopic observation on subjective judgment, it not only by inspection division of the technical level of the influence, and with a subjectivity. Some laboratory according to the world health organization provisions of the method, according to the stand or fall of sperm motility grade the record, some only in a rough evaluation, the record for good, medium and weak. Therefore, semen check has been in the lower level. 70 to 80 s, foreign successively developed laser light scattering measurement technology and computer image processing automatic analysis system, make the level of the semen check is accurate and complete degree. The good news is after DuoNian efforts, our country has to the design and development of the two systems. The national family planning committee of science and technology research institute MaXiaoNian etc with tsinghua university joint development of these two sets of equipment for the thousands of cases of infertility patients and normal sperm tests, and to the giant panda, rats and mice, cattle, and so on the different species of animal sperm for the tests, enormous amounts of first-hand material.

According to the test, and normal sperm movement speed distribution of peak of 36 micro/SEC, the average speed of 35 micro/seconds, and infertility patients sperm movement speed distribution for 32 microns per second peak, the average speed of 31 micro/SEC, significant differences between the two groups.

According to the clinical statistics, 20% of male infertility patients about no refined disease, 30% less refined disease, about 40% of the people the sperm movement speed below 31 micron/SEC (half of less than 28 micro/SEC). Because of male infertility patients have a significant part of his semen examined seemingly normal, in fact, the movement of sperm in the low level, so we initially thought, if a man's sperm average speed less than 28 micron/SEC shall be regarded as weak sperm disease (i.e. sperm motility is poor, or yue sperm motility ability is poor). According to the animal experiment results found that sperm movement speed and height of the significant differences between species, low fertility rate and low speed. Such as cattle sperm movement speed can reach 50 ~ 70 m/SEC, mice and rats can reach 45 to 55 micro/seconds, and the giant panda sperm movement speed is only 20 microns/seconds or so. The giant panda breeding ability is to protect the low of the rare animals a difficult problem. Because the present observation can still too little, is still not sure the giant panda's fertility rate is low because of its low sperm movement speed. Clinical testing results also indicated that sperm movement speed and sperm count on the matter, Whether has nothing to do with semen liquefaction.

So, can raise the male sterility patients sperm movement speed, solve their fertility problems? Is the possibility. One is through the  western medicine therapy to improve the sperm motility; 2 it is through in vitro treatment methods make sperm movement speed increase, and then artificial insemination. The experiment indicates that the special sperm nutrition incubation liquid and in the tube carefully semen above, then nutrient and semen as layered like a cocktail get along, and then the test tube in 37 ° C temperature box incubation 3 hours, activity sperm will have a swim to the top of the solution, and their vigor for the surrounding environment with rich nutrients have increased. Incubation sperm movement speed before for 32 micro/SEC, after incubation can increase to 42 micro/SEC. Visible, through this special training method can make originally the low level of sperm movement every into a "sports". According to the report, the use of this method has made many male infertility patients have children of their own.

The two sets of domestic development system in determining the speed of the sperm movement is very reliable. They can quickly determine the results obtained, for clinical inspection and basic research provides a reliable means. With the advanced detection means, the doctor will know exactly what the sperm part function, find out the infertility, and use them in patients taking treatment test less refined disease or weak sperm disease before and after drug change of speed sperm movement and, thereby, to therapeutic effect and function mechanism of drug research provides valuable information.

Of course, these instruments also still exist deficiencies. Sperm function such as automatic analysis system measured sperm counts are usually on the high side, and the sperm live rate low. This is because there are many samples in the semen of sperm particles, the computer to and sperm of similar size particles lack enough to identify ability, will put these particles mistaken for the active sperm, so that the deviation. This is both at home and abroad problem. In order to remove infertility patients physical and mental suffering, we are continuing to effort to sperm function test level enhances one step again.

 

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