• Title/Summary/Keyword: intersex

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Risk Assessment of Nonylphenol using Sex Ratio, Sexual Maturation, Intersex and Lipofuscin Accumulation of the Equilateral Venus Gomphina veneriformis (Bivalvia: Veneridae) (대복 Gomphina veneriformis의 성비, 성 성숙, intersex 및 지방갈색소 침적을 이용한 nonylphenol의 위해성 평가)

  • Lee, Jung-Sick;Park, Jung-Jun
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.40 no.1
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    • pp.16-23
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    • 2007
  • Nonylphenol (NP) is an estrogen-mimicking compound or xenoestrogen. This study investigated the effects of nonylphenol on the reproductive status of the equilateral venus Gomphina veneriformis. The experiment lasted 24 weeks, Experimental groups consisted of a control and three nonylphenol exposures ($1.0,\;2.5,\;and\;5.0\;{\mu}g\;NP/L$). Mortality did not differ significantly between the control and the exposure groups. The sex ratio (F:M) was 1:1 in nature and 1:1.03 in the control group. However, it changed to 1:3.5 with $5.0\;{\mu}g\;NP/L$ exposure. Gonad maturity in females was higher in the nonylphenol exposure groups than in the control group. By contrast, in males, it was lower in the nonylphenol exposure groups. Intersex individuals constituted 0% in nature, 3.08% in the control group, and 23.6% in the group exposed to nonylphenol, with female characteristics more prevalent than male. As the concentration of nonylphenol increased, the accumulation of lipofuscin increased in the mid-gut gland.

Reproductive Disrupting Effect of Organotin Compound in the Ark Shell, Scapharca broughtonii (Bivalvia: Arcidae)

  • Lee, Jung-Sick;Cho, Hyeon-Seo;Jin, Young-Guk;Park, Jung-Jun;Shin, Yun-Kyung
    • Animal cells and systems
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    • v.13 no.2
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    • pp.223-227
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    • 2009
  • This study was carried out on the ark shell Scapharca broughtonii in order to examine if organotin compounds, which are known to induce reproductive abnormalities in gastropods, have the same affect on bivalves. The research was conducted during seven weeks in spring season through a field transplantation experiment in one reference area (Ra) and two organotin-polluted areas (Opa) near a shipyard complex. Sex ratio in the Ra was 1:1.6 (female:male). Sex ratio in Opa I and Opa II were 1:0.49 and 1:1.03, respectively, illustrating slightly higher proportion of females. Gonad activity exhibited a sequence of Opa II>Ra>Opa I. Intersex individuals of 3.33% (n=4/120) were confirmed in Opa. Intersex gonads were observed only in females. The results show that organotin compounds caused reproductive disruption in Scapharca broughtonii.

Induction of Intersex and Masculinization of the Equilateral Venus, Gomphina veneriformis (Bivalvia: Veneridae) by Zinc

  • Ju, Sun-Mi;Park, Jung-Jun;Lee, Jung-Sick
    • Animal cells and systems
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    • v.13 no.3
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    • pp.339-344
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    • 2009
  • This study aims to find out the effect of heavy metals, as is the case of EDCs (endocrine disrupting chemicals), on reproductive endocrine disruption of aquatic animals. In the present experiment zinc, which is a heavy metal well known for its androgenous activity, was used. The experimental period was 24 weeks, starting in November during the inactive stage of the clam's reproductive cycle. The experimental groups were composed of one control condition and three zinc exposure conditions (0.64, 1.07, and 1.79 mg/L). The sex ratio (F:M) was 1:1.06 in the control group and 1:1.70 in all the exposed group, illustrating the tendency for higher proportion of males with increases in zinc concentration. Gonad maturity was higher in 1.07, and 1.79 mg/L groups compared to the control group, with higher maturity observed in males than females. Intersex individuals made up 24.7% of the exposed group, while females exhibited a higher ratio than the males with increasing zinc concentration. The results of this study indicate that zinc functions as an androgenic effector on the reproduction of Gomphina veneriformis.

Cerebral Aneurysm and Aortic Coarctation in a 46, XY Female. Is it Causal or Coincidental?

  • Ju, Sun-Min;Yi, Hyeong-Joong;Ko, Yong;Kim, Kwang-Myung
    • Journal of Korean Neurosurgical Society
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    • v.37 no.2
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    • pp.137-140
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    • 2005
  • Most vascular disorders tend to affect both the brain and heart, and among them, a clinical syndrome constituting cerebral aneurysm and aortic coarctation(AC) has been well recognized. Persistent hypertensive impact to the cerebral vasculature with developmental anomaly of the neural crest, precursor of ectomenchymal, would be closely associated with development of the cerebral aneurysm in AC. Gonadal steroid hormone, a guardian of the cardiovascular system, has been known for its protective effects on the vascular wall. Gonadal steroid hormone (androgen) insensitivity such as 46,XY female syndrome may increase the risk of hypertention and subsequent vascular anomalies. The authors report on a 46-year-old 46,XY female patient with AC who underwent surgical clipping of the ruptured cerebral aneurysm. Clinical implications and proposed pathogenetic mechanisms of aneurysm in this intersex syndrome are presented and discussed.

Clinical Investigation of Intersex (간성(間性)에 관한 임상적(臨床的) 고찰(考察))

  • Kim, Kwang-Myoung;Kim, Kyung-Do;Lee, Hee-Yong
    • Clinical and Experimental Reproductive Medicine
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    • v.9 no.1_2
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    • pp.79-93
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    • 1982
  • We collected a total of 109 patients with intersex during the past 16 years (1966-1982). They were summerized as follows: Klinefelter's syndrome, the most common disease, was found in 76 cases, Turner's syndrome in 3 cases, true hermaphroditism in 5 cases, male pseudohermaphroditism in 5 cases, female pseudohermaphroditism in 13 cases and others in 7 cases in which 2 cases of XX male syndrome, 1 case of agonadism, 1 case of hernia uteri inguinale and 3 cases of unclassified intersex were included. 2 mosaic Klinefelter's syndrome showed 46/47 XX/XXY and 1 mosaic Turner's syndrome showed 45/46 XO/XX. The 5 patients with true hermaphroditism included 2 cases that had an ovary on one side and a testis on the other, 1 case, seperate ovary and testis on each side, 1 case, an ovary on one side and a seperate testis and ovary on the other and 1 case, an ovary on one side and an ovotestis on the other. Sex chromosome study on the true hermaphroditism revealed 46 XX in 2 patients and 46/46 XX/XY mosaicism in 3 patients. In male pseudohermaphroditism, all patients had a short and blind vagina. Of which, familial tendency was found in 1 case. Her sister had operation for sex reversal for female. In female psedohermaphroditism, all the patients were adrenogenital syndrome. Operations for clitoridectomy and vaginoplasty were performed on 10 patients. Hydrocortisone was given to 6 patients. Menstruation started to occur 6 months and 4 months after the medical therapy respectively in 2 cases.

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Sex ratio and intersexuality in coastal fishes near industrial complex of Korea (한국 산업단지 인근 연안 어류의 성비와 intersexuality)

  • Lee, Jung-Sick;Kim, Jae-Won;Park, Jung-Jun;Ju, Sun-Mi;Park, Ji-Seon;Lee, Dong-Geun;Yun, Tae-Woong;Choi, Kyung-Hee;Yoon, Jun-Heon;Eom, Ig-Chun
    • Journal of fish pathology
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    • v.23 no.2
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    • pp.211-219
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    • 2010
  • Specimens were collected from the coastal region near industrial complex of Ulsan-Onsan, Sihwa-Ansan and Yeosu-Gwangyang in 2008 and 2009. The total number of individuals used in analysis was 1,289 of Acanthogobius flavimanus, Chelon haematocheilus, Hemibarbus labeo, Leiognathus nuchalis, Mugil cephalus and Synechogobius hasta. The sex ratio in the total individual was 1:0.73 (female:male). Specific sex ratio of fishes in the areas, namely the Ulsan-Onsan, Sihwa-Ansan and Yeosu-Gwangyang were 1:0.79, 1:0.81, and 1:0.25, respectively. Especially, female in Yeosu-Gwangyang was higher than male. The intersexuality in the total individual was 11.7%. Intersexuality of fishes in the areas were 4.98, 14.39 and 25.0% in the Ulsan-Onsan, Sihwa-Ansan and Yeosu-Gwangyang, respectively. It was indicated female higher than male in Ulsan-Onsan and male higher than female in Sihwa-Ansan and Yeosu-Gwangyang.

Experiences and Problems of Sexual and Reproductive Health among Lesbian, Gay, Bisexual, Transgender, Queer or Questioning, and Intersex (LGBTQI) People in Korea (한국 성소수자의 성⋅생식건강의 경험)

  • Lee, Yunjung;Kim, Ju Hee
    • Journal of East-West Nursing Research
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    • v.27 no.2
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    • pp.195-204
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    • 2021
  • Purpose: The purpose of this study was to understand the experiences and problems of sexual and reproductive health among Korean lesbian, gay, bisexual, transgender, queer or questioning, and intersex (LGBTQI) people. Methods: Phenomenological methodology was employed in this study, which comprised 14 LGBTQ participants. Data were collected using individual in-depth interviews from May to June, 2021, and were analyzed using Colaizzi's method. Results: Four categories-comprising nine theme clusters-emerged from the data, as follows: 1) hard-to-recognize gender identity, 2) blind spots in the healthcare system, 3) empathy and support in the community, and 4) new challenges to protect my precious self. Conclusion: This study provides valuable and detailed insights into the meaning of sex and reproductive health among Korean LGBTQI people. This finding could be utilized to develop effective questions for understanding not only sexual and reproductive health but also overall health problems of LGBTQI people.

Intersexuality of Oyster, Crassostrea gigas in Uninhabited Island Waters Near Yeosu, Korea (한국 여수 인근 무인도 해역에서 굴 Crassostrea gigas의 인터섹스 출현율)

  • Park, Jung Jun;Shin, So Ryung;Kim, Hyeon Jin;Oh, Han Young;Lee, Dong-Geun;Lee, Jung Sick
    • Journal of Marine Life Science
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    • v.6 no.2
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    • pp.88-96
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    • 2021
  • The purpose of this study was to report the intersex identified in the oyster Crassostrea gigas (n=410, SH 43.3±11.4 mm) in the waters around 13 uninhabited islands near Yeosu. The overall sex ratio (male: female) was 1:1.1, but there was a difference between the sampling areas. In Gajangdo, Sogyeongdo, and Jungsamdo, females showed a high ratio of 65% or more, and in Songdo, Chodo, and Buseodo, males showed a high ratio of 65% or more. The overall intersexuality was about 12.8%, which was high in males, about 34.7% in females and 64.3% in males. Intersexuality was the highest with about 43.8% in Chodo of Gamak Bay. Histologically, intersex could be divided into three types: intrafollicular type, interfollicular type and mixed type. Among these three types, the intrafollicular type was the most dominant with about 81.6%. The intersex cause of oysters reported in this study is considered to require detailed research in the future.