• Asian-Australasian Journal of Animal Sciences
• /
• v.24 no.10
• /
• pp.1358-1364
• /
• 2011

The sex-determining region on the Y (SRY) gene is important in mammalian sex determination and differentiation. We report a study of the abundance of SRY gene products in bovine ejaculate. RT-PCR experiments using RNA extracted from bovine spermatozoa with SRY-specific primers yielded a 456 bp product, but the amount of SRY mRNA in sperm was lower than that in the testes (p<0.01). A protein of approximately 27 KDa was detected by western blotting. The SRY transcript was detected in the midpiece of approximately half the spermatozoa by in situ hybridization, and the SRY protein was detected in the heads of half the spermatozoa by immunofluorescence, indicating that SRY mRNA and protein may only be present in Y-bearing spermatozoa. These results suggest that the SRY transcript and protein are present in bovine ejaculated Y-sperm. The roles of the SRY gene in spermatogenesis, sperm motility, and the sperm-oocyte interaction merit further investigation.

• Journal of Animal Science and Technology
• /
• v.47 no.3
• /
• pp.317-324
• /
• 2005

A method for sex determination of pigs was examined using polymerase chain reaction(PCR). Sex determining region Y(SRY) gene encoded on Y chromosome plays a key role for primary male development. Zinc finger X-Y(ZFX-ZFY) gene, one of the X-V homology gene group was found on the X and Y chromosomes, respectively, We tested for molecular sexing by amplification patterns of SRY and ZF genes. Genomic DNAs from various resources including porcine hairs and semen collected from domestic pig breeds and native pigs was used for PCR assay of each gene. The amplified products for porcine SRY gene were yielded only in males but not in females. On the other hand, two differential patterns were observed in amplification of ZF gene reflecting the chromosomal dimorphism by a length polymorphism between X and Y chromosomes. Of both, a common band was detected in all individuals tested so that this band might be amplified from ZFX gene as a PCR template, but another is specific for males indicated that from ZFY. The result of PCR assay provides identical information to that from investigation of phenotypic genders of the pigs tested. We suggest that this PCR strategy to determine porcine sexes using comparison of the amplification patterns of the SRY gene specific for Y chromosome and the dimorphic ZF gene between X and Y chromosomes may be a rapid and precise method for discrimination of two sexes and applied to DNA analysis of small samples such as embryonic blastomere, semen, and hairs.

• Korean Journal of Veterinary Research
• /
• v.45 no.1
• /
• pp.127-130
• /
• 2005

The objective of present study was to ascertain sex determination for individual identification, parentage control, and sex chromosome anomalies in horse. PCR amplification products of the equine sex determining region of the Y chromosome gene (SRY) and amelogenin gene (AMEL) were detected by using agarose gel electrophoresis. A normal sire and foal II showed 1 SRY band (430 bp) and 3 AMEL (AMELX, AMELY, and AMELX/Y) band, 175 bp, 160 bp, 190 bp, respectively, and a normal dam and foal I showed a single AMELX band (175 bp). These results enables a quick diagnosis for sex determination prior to cytogenetic analysis.

• Journal of Veterinary Clinics
• /
• v.25 no.3
• /
• pp.221-223
• /
• 2008

SRY gene is normally responsible for testis induction, yet testis development can occur in the absence of SRY. In here, we analyzed the SRY-negative sex reversal in cocker spaniel, at 1.5 year-old. The attacked dog was suffered from enlarged clitoris, and resulted in disorder of urination. By surgically approach, enlarged clitoris and one testis, which are apparently seen, are removed. Additionally, thorough the abdomen surgery, uterus and ovary-like mass were removed. The dog had XX, chromosome, showed negative for SRY-gene, and the mass had the ovary-testis structure. In other words, based on the macroscopic, cytogenic, and histological study, we can diagnose the cocker spaniel as SRY-negative sex reversal.

• Journal of Animal Science and Technology
• /
• v.49 no.1
• /
• pp.1-8
• /
• 2007

This study was focused on discriminating the molecular sexes of red deer and elk by duplex polymerase chain reaction(PCR) using two primer sets. Sex differentiation of mammals is primarily dependent on the presence or absence of sex determining region Y(SRY) gene encoded on Y chromosome which plays a key role for male development. Zinc finger X-Y(ZFX-ZFY) gene, one of X-Y homology gene group was found on X- and Y- chromosomes, respectively. At first, the nucleotide sequences were characterized for the intron 9 flanking region of ZFX-ZFY genes. The intron 9 of ZFX and ZFY is 529-bp and 665-bp in length, respectively. A transposable element sequence similar to bovine SINE element Bov-tA was detected only in ZFY gene of Cervidae. Sexing analysis was conducted by duplex PCR assay for amplification of SRY and ZFX-ZFY genes. Two differentially amplified patterns were found: one for females has a common band amplified only from ZFX as a template, and another for males had three bands(a common ZFX and two male-specific ZFY and SRY). On the separate tests using each gene, the results was identical to those from duplex PCR assay. Moreover, the results from PCR assays provide also identical information to phenotypic investigation of individuals of red deer, elk as well as their hybridized progenies collected from two isolated farms. These results suggest that it may be a rapid and precise method for determining the sexes by duplex PCR amplification using Y-chromosome specific SRY and X- and Y- homologous ZFX-ZFY genes showing sexual dimorphism in red deer and elk without any other controls.

• Clinical and Experimental Reproductive Medicine
• /
• v.26 no.2
• /
• pp.275-280
• /
• 1999

Male sexual differentiation involves a cascade of events initiated by the presence on the Y chromosome of the of the SRY (sex determining region of Y chromosome) gene, which causes the indifferent gonad to develop into a testis. Hormonal products of the testis, predominantly testosterone and Mullerian inhibiting subtance (MIS), then control the sexual differentiation of the developing fetus. SRY is a transcription factor; however, target genes for its action have yet to be identified, because the DNA recognition sequence for SRY is found in many genes. Therefore the study of intersex disorders is being used to identify other genes active in the pathway of sexual differentiation. Patients with 46,XY gonadal dysgenesis, or Swyer's syndrome, have streak gonads, normal stature, and a sexually infantile phenotype with Mullerian structures present. The inheritance is usually sporadic but can be autosomal dominant or X-linked recessive. Unlike 45,X patients, stigmata of Turner syndrome are rare. As many as 20 to 30% of patients are at risk for malignant gonadal tumor formation and should undergo gonadectomy soon after the diagnosis is made. We have experienced a case of Swyer syndrome which showed a positive SRY gene in peripheral blood and gonad. So we report this case with a brief review of literatures.

• Journal of Genetic Medicine
• /
• v.5 no.2
• /
• pp.145-149
• /
• 2008

46,XX male is a rare sex constitution characterized by the development of bilateral testis in persons who lack a Y chromosome. Manifestations of 46,XX males are usually hypogonadism, gynecomastia, azoospermia, and hyalinations of seminiferous tubules. The incidence of XX male reversal is approximately 1 in 20,000 male neonates. The SRYgene is located at the short arm of the Y chromosome(Yp11.31) and codes for testis determining factor in humans. Here, the patient, who presented with a normal male phenotype, was referred for azoospermia. Conventional cytogenetic analysis showed a 46,XX karyotype. Quantitative fluorescent polymerase chain reaction(QF-PCR) and Multiplex PCR studies identified SRY gene. And, Fluorescence In Situ Hybridization(FISH) confirmed the SRY gene on the distal short arm of chromosome X. We identified the SRY gene on the distal short arm of chromosome X by molecular cytogenetic and molecular analyses. Therefore, molecular-cytogenetics and molecular studies were proved to be clinically useful adjunctive tool to conventional prenatal cytogenetic analysis.

• Journal of Genetic Medicine
• /
• v.2 no.1
• /
• pp.11-15
• /
• 1998

This paper reports 3 cases with 46,XX sex reversed male. Three 46,XX hypogonadal subjects showed complete sex reversal and had normal phallus and azoospermia. We studied them under clinical, cytogenetic and molecular aspects to find out the origin of the sex reversal. Patients had markedly elevated serum follicle-stimulating hormone (FSH) and lutenizing hormone (LH) and decreased or normal range of serum testosterone. The testicular volumes were small (3-8ml). Testicular biopsy showed Leydig cell hyperplasia and atrophy of seminiferous tubules. We obtained the results of normal 46,XX, and the presence of Y chromosome mosaicism was ruled out through XY dual fluorescent in situ hybridization (FISH). By using polymerase chain reaction (PCR), we amplified short arm (SRY, PABY, ZFY and DYS14), centromere (DYZ3), and heterochromatin (DYZ1) region of the Y chromosome. PCR amplification of DNA from these patients showed the presence of the sex-determining region of the Y chromosome (SRY) but didn't show the centromere and heterochromatin region sequence. The SRY gene was detected in all the three patients. Amplification patterns of the other regions were different in these patients; one had four amplified loci (PABY+, SRY+, ZFY+, DYS14+), another had two loci (SRY+, ZFY+) and the other had two loci (PABY+, SRY+). We have found that each patient's translocation elements had different breakpoints at upstream and downstream of the SRY gene region. We conclude that the testicular development in 46,XX male patients were due to insertion or translocation of SRY gene into X chromosome or autosomes.

• Journal of Oral Medicine and Pain
• /
• v.24 no.3
• /
• pp.325-333
• /
• 1999

최근 중합효소연쇄반응을 이용한 분자생물학적 유전자분석기술의 발달로 성염색체상의 유전좌위 증폭을 통한 성별감정이 활발히 이루어지고 있다. 그중 사람 Y염색체상에 존재하는 남성 고환의 형성을 유도하는 sex-determining region Y(SRY) gene이 규명되어 유전질환의 조기 발견이나 예방 및 태아의 성별판정 등에 응용되고 있다. 그러나, 치아는 외부 환경에 대한 저항성이 가장 높은 장기로 성별감정 등 법의치과학적 개인식별에 널리 이용되고 있음에도 불구하고, SRY 유전자를 이용하여 치아에서의 성별감정에 대한 연구는 시도된 바 없다. 따라서, 본 연구에서는 사람 치아에서 중합효소연쇄반응법을 이용한 SRY 유전자를 검출하여 성별판정에 용용하고자 하였다. 남녀 각각 20개 치아의 치수와 상아질에서 DNA를 추출하여 중합효소연쇄반응 을 시행하고 SRY 유전자를 검색한 결과, 남성에서는 치수 13개중 8개, 상아질 7개중 4개에서 SRY 유전자가 검출되었고, 여생에서는 검출되지 않았다. 이러한 결과는 중합효소연쇄반응법을 이용하여 사람 치아에서 SRY 유전자를 검색할 때, 남성판별에 유용하고 치아를 이용한 성별감정시 기존의 성별감정에 이용되고 있는 다른 유전자와 함께 SRY 유전자를 검색함으로써 성별감정의 신뢰도를 높힐 수 있을 것으로 사료된다.

• Korean Journal of Clinical Laboratory Science
• /
• v.42 no.3
• /
• pp.111-115
• /
• 2010

A 15-year-old female with primary amenorrhea and Tuner's syndrome feature was referred for a chromosome analysis. The karyotype of the patient was 45,X/46,X,der(Y) mosaicism under initial GTG-banding analysis. Fluorescence in situ hybridization (FISH) analysis with probe for CEP X probes and SRY probe (Vysis, Inc. Downers Grove, IL 60515, USA) was carried out. This probe is direct labeled with SpectrumOrange (SRY, Yp11.3) and is available as a single probe or mixed with the CEP X SpectrumGreen probe. SRY SpectrumOrange/CEP X SpectrumGreen hybridized to a specimen obtained from an two isodicentric Y chromosomes. The karyotype of the patient was ish Xcen(DXZ1x1)/Xcen(DXZ1x1), Yp11.3(SRYx2) by using FISH. This karyotype was considered a variant of Tuner syndrome with mixed gonadal dysgenesis (MGD), male pseudohermaphroitism (MPH) and apparently normal male.