• Applied Microscopy
• /
• 제43권3호
• /
• pp.103-109
• /
• 2013

ICI 182,780 (ICI) is known as an estrogen receptor antagonist, whereas propyl pyrazole triol (PPT) is an estrogen receptor agonist. In this study, ICI or ICI added with PPT was injected into adult male mice. Body and reproductive organ weights were reduced in the ICI added with PPT group compared to the control group. Further, the ICI and ICI added with PPT groups both showed increases in luminal areas of the seminiferous tubules of the testis, whereas cell heights of efferent ductules and the initial segment of the epididymis were reduced. Sperm count in the caudal epididymis was reduced in the ICI and ICI added with PPT groups. These results show that reproductive tissues were more deeply affected in the ICI added with PPT group. We also demonstrated that treatment with ICI resulted in histological changes in the testis, efferent ductule, and epididymis. Further, alternate treatment with ICI and PPT induced abnormalities in reproductive organs. These results indicate that a high concentration of PPT together with ICI may cause histological abnormalities instead of histological restoration in reproductive organs.

• Toxicological Research
• /
• 제17권2호
• /
• pp.97-106
• /
• 2001

Korean ginseng products have been fumigated with ethylene oxide (EO) for sterilization and prolongation of storage periods. However, there had been controversies indicating that the consumption of food treated with EO might cause harmful effects in human. Since, in Korea the use of EO gas for food treatment was banned in 1991. Since then, irradiation technique has been developed as an alternative. This study was carried out to investigate the effects of irradiated ginseng on fertility, and reproductive and developmental toxicity. Either EO gas fumigated or gamma-irradiated ginseng was administered to male rats by oral gavage for 63 days during the premating period. Female rats were administered from 14 days before mating to day 20 of gestation or to day 21 of lactation. The exposure amount of irradiation used was 5, 10 and 30 kGy, respectively. There were no treatment related changes of darns in clinical signs, and parturition. No treatment related changes in food consumption, body/organ weights, male/female reproductive and fertility performances were observed. F1 fetuses showed no external abnormality. Reflex/sensory junctions, physical/behavioral development, and reproductive performance of F1 rats were not adversary affected. The results of this study show that gamma-irradiated ginseng, up to 30 kGy, has no adverse effects on the fertility, reproduction and development in Wistar rats.

• Fisheries and Aquatic Sciences
• /
• 제10권4호
• /
• pp.171-178
• /
• 2007

We analyzed the compositions of proximate and total fatty acids in the reproductive organs of male (testis, vas deferens, seminal vesicle, and spermatophore sac) and female (ovary, oviduct, oviducal gland, and nidamental gland) common squid. The protein contents were 12.1-22.7 and 13.2-19.4% for males and females, respectively, and the lipid contents were 1.0-2.7 and 2.1-8.0%, respectively. The prominent fatty acids in all reproductive organs were 22:6n-3, 20:5n-3, 16:0, 20:1n-9, 18:0, 18:1n-9, and 20:4n-6. Females had 28.6-32.0% of 22:6n-3 and 11.3-22.6% of 20:5n-3, while males had 20.8-26.8% of 22:6n-3 and 14.4-28.7% of 20:5n-3. These results indicate that the reproductive organs of both male and female squid are potential sources of n-3 polyunsaturated fatty acid.

• Clinical and Experimental Reproductive Medicine
• /
• 제8권2호
• /
• pp.29-33
• /
• 1981

Vesectomy has been increased as a popular method of birth control because it is simpler than other methods for men. But the vasectomy results in several problems such as relation to effect changes on the structure and function of the reproductive organ. The fate of non-ejaculated spermatozoa is postulated by some authors that those are disappeared by a progress of dissolution and reabsorption in the epididymis, and we have attempted to prove the true state of sperm-acrosome on the fine structure in vasectomized rats. The results were as follows: 1. Apical segments of the acrosome were swollen similar to the shape of club in many spermatozoa. 2. Discontinuities of the outer and inner acrosomal membranes were occasionally noted and there were complete losses of acrosomes in the certain place. 3. There was no evidence of significant changes in the nuclear structure, nor dilatation of the subacrosomal space. 4. Vasectomy might effect destructive changes in the acrosomes of the non-ejaculated spermatozoa in situ.

• Journal of Ecology and Environment
• /
• 제41권9호
• /
• pp.256-264
• /
• 2017

Background: The aim of this study was to clarify the relationship between the sexual reproduction and the resource allocation in a natural Polygonatum humile population grown in a temperate mixed forest gap. For this aim, the plant size, the node which flower was formed, the fruiting rate, and the dry weight of each organ were monitored from June 2014 to August 2015. Results: Firstly, in 3-13-leaf plants, plants with leaves ${\leq}8$ did not have flowers and in plants with over 9 leaves the flowering rate increased with the number of leaves. Among plants with the same number of leaves, the total leaf area and dry weight of flowering plants were larger than those of non-flowering plants. The minimum leaf area and dry weight of flowering plants were $100cm^2$ and 200 mg, respectively. Secondary, the flowers were formed at the 3rd~8th nodes, and the flowering rate was highest at the 5th node. Thirdly, cumulative values of leaf properties from the last leaf (the top leaf on a stem) to the same leaf rank were greater in a plant with a reproductive organ than in a plant without a reproductive organ. Fourthly, fruit set was 6.1% and faithful fruit was 2.6% of total flowers. Biomasses of new rhizomes produced per milligram dry weight of leaf were $0.397{\pm}190mg$ in plants that set fruit and $0.520{\pm}0.263mg$ in plants that did not, and the difference between the 2 plant groups was significant at the 0.1% level. Conclusions: P. humile showed that the 1st flower formed on the 3rd node from the shoot's base. And P. humile showed the minimum plant size needed in fruiting, and fruiting restricted the growth of new rhizomes. However, the fruiting rate was very low. Thus, it was thought that the low fruiting rate caused more energy to invest in the rhizomes, leading to a longer rhizome. A longer rhizome was thought to be more advantageous than a short one to avoid the shading.

• Journal of Plant Biology
• /
• 제30권1호
• /
• pp.43-57
• /
• 1987

The epidermal structure and stomatal types in vegetative and reproductive organs of three species of Bryophyllum(B. crenatum, B. diagremontion, B. tubiflorum) were described. The epidermal cells were polygonal, isodiametric, and rectangular in the leaves and stems, and elongated cells in the stamens, styles, and ovaries. These cells were commonly thick, and arched or sinuous in the leaves, epiphylous bunds, petals and ovaries. They were straight in the stems, petioles, pedicels, and peduncles. In both vegetative and reproductive organs, the subsidiary cell walls were commonly thin and mostly arched in all the organs. The great majority of the mature stomata in all the organs were helicocytic type with a helix of four to six subsidiary cells. The mature stomata varied from organ to organ with regard to the number and arangement of subsidiary cells. The ontogenetic type of stomata in all the organs was mostly helico-eumesogenous type. This type was subdivided into three subtypes such as parahelico-eumesogenous, anomohelico-eumesogenous, and diahelico-eumesogenous stomata on the basis of the division angle fo the guard mother cell. Sometimes, the anisoeumesogenous type was found in various organs. This type was subdivided into three subtypes such as paraniso-eumesogenous, anomoaniso-eumesogenous, and dianisoeummesogenous stomata. The tetra-eumesogenous and duplotetra-eumesogenous types were rarely found; the former in the leaf of B. crenatum and the latter in the leaf of B. diagremontiana. Anomometric patterns in the mesogenous categorry of stomatal types was observed in a few organs of all the materials. A new stomatal type with tetra-eumesogenous stoma within a girdle of three subsidiary cells fo aniso-eumesogenous in the leaf of B. diagremontiana was firstly observed in the vascular plants. This stoma was termed the cotetra-aniso-eumesogenous type. Anormal stomata such as aborted stomata, single guard cells, stoma with a constricted part in the middle of large guard cells, and arrested stomata were found in the various organs of all the materials.

• 대한수의학회지
• /
• 제49권4호
• /
• pp.279-284
• /
• 2009

This research aimed to investigate the time-course effect of epichlorohydrin (ECH) on epididymal histopathology in Sprague-Dawley rats. Twenty-four male rats were randomly assigned to four groups with 6 rats in each group and were administered a single oral dose of ECH (70 mg/kg) or its vehicle. Six animals each were sacrificed on days 0 (control), 1, 2, and 7 after treatment. During the study period, clinical signs, body weights, reproductive organ weights, testicular spermatid count, epididymal sperm count, motility and morphology, and histopathology were examined. No treatmentrelated effects on body weights and reproductive organ weights were noted at any time point. On the contrary, sperm motility decreased slightly on days 1 and 2 after treatment and then decreased significantly on day 7 after treatment. The first signs of histological changes were the appearance of cell debris in the ducts and vacuolization of the epithelial cells observed in the proximal caput epididymis on day 1 after treatment. The incidences and grades of the histological changes including cell debris in the ducts, epithelial vacuolization, oligospermia, and epithelial disruption increased on day 2 and then decreased slightly on day 7 after treatment. These results show that a single oral dose of 70 mg/kg ECH to male rats results in cell debris in the ducts and vacuolization of the epithelial cells in the proximal caput epididymis, followed by reversible oligospermia, epithelial disruption, and decreased sperm motility.

• 한국어류학회지
• /
• 제18권3호
• /
• pp.193-201
• /
• 2006

한강 지류인 가정천과 원주천에 서식하는 Z. platypus의 생식생태에 관하여 연구하였다. 이차성징으로 수컷의 머리부위와 뒷지느러미, 미병부에 추성이 형성되었고 혼인색의 변화가 뚜렷하였으며, 산란기 체형변화로 암수에서 모두 뒷지느러미 길이가 길어지고, 체고도 높아졌다. Z. platypus 수컷의 세력권 싸움의 형태는 머리싸움(head butting), 회전싸움(rotated fighting), 평행하게 헤엄치면서 싸우기(parallel swimming), 물어뜯기(biting), 축출하기(expelling) 등이었다. Z. platypus는 전반적으로 유속이 느리고, 수심이 얕은 모래 바닥에 산란이 임박한 암컷의 상부에 위치하다가 옆으로 내려와 나란히 자세를 취한 뒤 뒷지느러미로 모래를 파헤치면서 산란 하였고, 별도의 난 보호행동은 하지 않았다. 산란 간격과 지속시간은 산란장의 개체 밀도와 관련이 있었다.

• 생약학회지
• /
• 제42권4호
• /
• pp.329-335
• /
• 2011

Antimicrobial studies on reproductive organs have been scarcely reported. Candida albicans and Neisseria gonorrhoea test to find out the natural substances of various concentrations in the antimicrobial experiments have been made. Antimicrobial effect of biopole as the natural compound biosynthesis matter that contain anti-inflammatory material, catechin polyphenols and lactic acid as a single natural substance on C. albicans were of great significance. Also the results of antimicrobial effects of biopole, catechin and lactic acid as a single natural substance on N. gonorrhoea, respectively, showed lower concentration than those of the antimicrobial effects on C. albicans. Through the survival of Lactobacillus acidofillus that acts for the protection of the genital tissue the importance of lactic acid was confirmed. Lactobacillus acidofillus protection and C. albicans firmly into disinfected to low concentrations of the natural mixture from biopole and catechin with lactic acid were found and the antimicrobial effects of this natural mixture on N. gonorrhoea were perfect. C. albicans and N. gonorrhoea to disinfect the optimal natural mixture from 2% concentration biopole, 0.2% concentration of catechin and 2% lactic acid were obtained. Through the survival of Lactobacillus acidofillus in the reproductive organs protectable effects were acquired to prevent the infections of reproductive tissue and the recurrence.

• 한국가축번식학회지
• /
• 제10권1호
• /
• pp.66-70
• /
• 1986

The findings of a study on reproductive disorders and their causes with 685 dairty cows raised on dairy farms located in Cheju city, Jochun, Hallim and Sung-up are summarized as follows; 1. Among a total 685 dairy cows, 149 heads were identified as having reproductive disorders. They were subdivided into 26 genital organ diseases (3.8%), 53 delivery abnormalities (7.7%), 17 stagnation of after-birth (2.5%), 23 long period nonestrus (3.4%) and 30 repeat breeders (4.4%). Also, the regional incidence of those disorders was recorded as high as 30.8-31.5% in Jochun and Cheju city, and as low as 12.6-16.6% in Sung-up and Hallim districts. 2. The regional incidence of delivery abnormalities was estimated as high as 10.7% in the Cheju city area, and gradually reduced to 8.8% in Jochun, 6.8% in Sung-up and 6.2% in the Hallim district. Abortion (3.1%), stillbirth (2.0%) and 욘새챰 (2.6%) were included in the delivery abnormalities.