• Applied Microscopy
• /
• v.29 no.3
• /
• pp.377-382
• /
• 1999

Osteoporosis means a deficiency in the amount of bone tissue in the skeleton or part of the skeleton. Osteoporosis is a lesion, not a specific disease. 'Osteoporotic' describes the slate of a bone or skeleton at a given time. Osteoporosis may be diagnosed subjectively by visual appraisal, or objectively by measurement of radiographs, sawn bones, or microscopic sections. This study was carried out to make clear of the influence of ovariectomy on time course of fibular osteoporosis in rats. Seven weeks after ovariectomy, osteoporosis was evident, when the size of the bone marrow cavities significantly increased and the width from the bone marrow cavity and cortex significantly decreased than normal.

• The Korean Journal of Physiology
• /
• v.8 no.1
• /
• pp.1-6
• /
• 1974

Rana pipiens의 난자운반은 섬모운동에 의하여 이루어지며 섬모운동은 배란시에 분비되는 난소호르몬에 의존하는 것으로 알려져 왔다. 저자는 이러한 난자운반이 순전히 난소호르몬에 의존하는가 난소호르몬 이외의 기타 호르몬이 관여하는 것인가 또는 난소호르몬 없이도 수행될 수 있는가를 알아보려고 본 실험을 시도하였다. 난관 적출된 개구리에 배란을 유도시켜 얻어진 복강난자를 난소적출을 실시한 암 Rana pipiens의 복강내에 이전시킨 대조군과 이전 직후 뇌하수체, 뇌하수체와 progesterone, progesterone, FSH, LH 또는 estrogen 등을 각각 주사시킨 각 호르몬 투여군의 6군으로 나누고 이식한 난자들에 대한 각 호르몬의 효과를 관찰하여 아래와 같은 결과를 얻었다. 1. 난소적출 Rana pipiens에 배란된 난자를 이식시키면 이식체내에서 난자운반이 진행되었다. 2. Progesterone, estrogen, FSH, LH 및 progesterone과 뇌하수체 호르몬 투여군의 난자운반은 대조군과 비슷한 현상을 보여 주었으므로 이들이 섬모운동에 직접 관여하는 것으로 보여지지 않았으나 뇌하수체 호르몬은 섬모운동과 난관투입에 유효한 영향을 미치었다. 3. 난자의 난관으로의 진입은 복강내에 난자수가 일정량(약 200)에 다달아야 이루어졌다. 4. 난소적출 개구리에서의 난자운반 진행상황으로 보아 난소가 섬모운동, 난자운반을 촉진하는 것으로 보이지 않았으며 섬모운동을 일으키는 요인은 복강내에 있는 난자 자체가 어떤 액성물질을 분비하는 것으로 고찰하였다.

• The Journal of Korean Obstetrics and Gynecology
• /
• v.30 no.4
• /
• pp.18-44
• /
• 2017

Purpose: The object of this study was to observe the anti-climacterium activity of Gagamguibiondam-tang (GGOT) on ovariectomized (OVX) rats, a well-documented rodent models resembles with women postmenopausal climacterium symptoms, as including cardiovascular diseases, obesity, hyperlipidemia, osteoporosis, organ steatosis and mental disorders. Methods: In this study, anti-climacteric effects were evaluated separated into three categories; 1) anti-obese, 2) anti-uterine atrophy and 3) anti-osteoporotic effects. Five groups were used (8 rats in each group); sham control, OVX control, GGOT 500, 250 and 125 mg/kg administered groups. Twenty-eight days after bilateral OVX surgery, GGOT were orally administered, once a day for 84 days, and then the changes on the body weight and gain during experimental periods, serum estradiol levels, abdominal fat pad and uterus weights with histopathology of abdominal fat pads (total thickness and mean adipocyte diameters) and uterus (total, epithelial and mucosal thickness, percentages of uterine gland regions) for anti-obese and estrogenic effects. In addition, femur, tibia and fourth or fifth lumbar vertebrae (L4 or L5) wet, dry and ash weights, mineral density (BMD), bone strength (failure load), serum osteocalcin and bone specific alkaline phosphatase (bALP) contents, histological and histomorphometrical analyses - bone mass and structure with bone resorption, were monitored for anti-osteoporosis activity. Results: As a result of OVX, noticeable increases of body weight and gains, food and water consumption, weights of abdominal fat pad deposited in dorsal abdominal cavity, serum osteocalcin levels were demonstrated in this experiment with decrease of uterus, femur, tibia and L5 weights, serum bALP and estradiol levels. In addition, marked hypertrophic changes of adipocytes located in deposited abdominal fat pads, uterine disused atrophic changes, decreases of bone mass and structures of femur, tibia and L4 were also observed in OVX control rats with dramatic increases of bone resorption markers, the Ocn and OS/BS at histopathological and histomorphometrical analysis in this study as compared with sham-operated control rats, suggesting the estrogen-deficient climacterium symptoms - obese and osteoporosis were induced by OVX, respectively. However, these estrogen-deficient climacterium symptoms induced by bilateral OVX in rats were significantly inhibited by 84 days of continuous oral treatment of GGOT 500, 250 and 125 mg/kg, respectively. Especially, GGOT 500, 250 and 125 mg/kg showed clear dose-dependent inhibitory activities on the OVX-induced climacterium signs. Conclusion: The results suggest that oral administration of GGOT 500, 250 and 125 mg/kg has clear dose-dependent favorable anti-climacterium effects - estrogenic, anti-obese and anti-osteoporotic activities in OVX rats in this experiment.

• Applied Microscopy
• /
• v.29 no.3
• /
• pp.315-321
• /
• 1999

Vitamin D is one of important factors involved in the regulation of bone metabolism. In osteoporosis, the therapeutic effect of vitamin D on the healing process of fracture has still been controversial. These studies were designed to understand the healing process of normal fibular fracture and the therapeutic effects of $1\alpha$, 25 dihydroxycholecalciferol on the osteoporotic fracture in rats. The simple transverse fractures of rat fibulae were produced with a rotating diamond saw. The histological and ultrastructural changes of rats were observed. The histological and ultrastructural studies revealed the healing of the fibular fracture in the 5th week after simple transverse fracture. The osteoporosis impaired more the healing of osteoporotic fibular fracture than normal non-osteoporotic fibular fracture. The healing process of osteoporotic fracture was facilitated by the treatment with $1\alpha$, 25 dihydroxycholecalciferol, however, was delayed more than the healing process of normal fracture. These results suggest that $1\alpha$, 25 dihydroxycholecalciferol was effective for reducing the deleterious effects of osteoporosis in fracture healing.

• Journal of Embryo Transfer
• /
• v.19 no.2
• /
• pp.121-126
• /
• 2004

본 연구는 개의 불임해결과 체외수정란을 생산할 목적으로 난소의 보존 및 난구세포의 부착 여부가 신선 및 동결 개 정자를 이용한 투명대 반응에 미치는 영향을 조사하였다. 1. 적출한 난소를 4$^{\circ}C$ 와 salt에 각각 48시간 보존 후 회수한 난구세포 부착 난자와 나화난자의 정자침입율은 각각 62.5%, 37.5% 및 42.5% 및 22.4%로서 난소를 적출 후 곧 바로 회수한 난구세포 부착 및 나화난자 내 정자침입율인 93.3%와 56.7%에 비해 현저히 낮게 나타났다. 2. 적출한 난소를 4$^{\circ}C$ 에 각각 4시간, 14시간 및 48시간 보존 후 회수한 난구세포부착 난자의 정자침입율은 각각 92.5%, 90.0%, 85.0%로서 신선 난소 난자의 정자침입율 93.3%에 비해 유사하거나 약간 낮게 나타났다. 3. 적출한 난소를 salt에 각각 4시간, 14시간 및 48시간 보존 후 회수한 난구세포부착 난자의 정자침입율은 각각 85.0%, 77.5%, 72.5%로서 신선난소로부터 회수한 난자의 정자침입율 93.3%에 비해 낮게 나타났다. 4. 적출한 난소를 4$^{\circ}C$ 와 salt에 각각 24시간 보존 후 회수한 난구세포부착 난자의 체외수정율과 체외발생율은 각각 50.0%, 22.5% 및 40.0%, 15.0%로서 신선난소로부터 회수한 난구세포부착 난자의 체외수정율과 체외발생율 72.5%와 32.5%에 비해 낮게 나타났다.

• Journal of Veterinary Clinics
• /
• v.28 no.6
• /
• pp.566-570
• /
• 2011

The objective of this study was to assess the complications of titanium clip application after ovariohysterectomy (OHE) and find the proper surgical technique to minimize the complications by comparing the ligation method of ovarian pedicle. Six female beagle dogs were used for this study and they were divided randomly into two groups by ligation techniques: ligation and non-ligation of the suspensory ligament of ovary including ovarian pedicle. To evaluate the difference between two techniques, the location and embedded pattern of applied clips in the abdominal cavity were identified through radiographic tests and autopsy. Hematology tests were also performed to check the existence of inflammation by applied clips and all tests were carried out monthly for 1 year. There were few changes in location of clips of both groups on X-ray views without any migration. Almost all values in hematology of two groups were within the normal range and there were no inflammatory symptoms. All of applied clips in two groups were found near the kidney, but the embedded forms of them showed slight differences. The clips ligating suspensory ligament and ovarian pedicle were located in deep place and thickly surrounded with thin layers of peritoneum. But the clips ligating only ovarian pedicle were found with ease on surface of layer and located in lower place compared with the clips ligating suspensory ligament. These results indicate that the suspensory ligament holds applied clips and minimizes the movement of them. Therefore, ligation of suspensory ligament would be the preferred technique in titanium clip application for OHE.

• Journal of the korean veterinary medical association
• /
• v.40 no.10
• /
• pp.937-941
• /
• 2004

• Applied Microscopy
• /
• v.38 no.4
• /
• pp.353-361
• /
• 2008

We aimed to investigate whether the extracts of Lycii fructus, Lycii folium, and estradiol can attenuate on the level of cholesterol on serum and ultrastructure alteration of hepatocytes isolated from ovariectomized rats. Experimental groups are divided into five: Sham (sham-operated), OVX (ovariectomized animal), LCF (OVX, Lycii fructus), LCL (OVX, Lycii folium), and $E_2$ (OVX, estradiol). The body weights of OVX group showed increase compared with Sham, LCF, and LCL groups. The levels of total cholesterol and low-density lipoprotein (LDL) cholesterol were significantly decreased in the LCF and LCL groups compared with those of OVX group. Moreover, the High-density lipoprotein (HDL) cholesterol level was increased in the LCL group. As the results of electron microscopical observation, lipid droplets in the OVX group showed increase compared with Sham group. But in the LCF group not showed lipid droplets. In conclusion, administration of Lycii fructus or Lycii folium lowers the serum cholesterol content of the ovariectomized rats and also the damage of the hepatocytes and formation of lipid droplets.

• Journal of Embryo Transfer
• /
• v.30 no.3
• /
• pp.201-206
• /
• 2015

Selenium (Se) is an essential trace element for humans and animals, and several findings suggest that dietary Se intake may be necessary for bone health. Accumulating evidence indicates that Se compounds possess anticancer properties. Se is specifically incorporated into proteins in the form of selenocysteine and non-specifically incorporated as selenomethionine in place of methionine. This study evaluated protection by Se in the bone repair process in ovariectomized rats after irradiation. For such purpose, 80 ovariectomized female Sprague-Dawley rats were randomly divided into 4 experimental groups: ovariectomized (Ov), Ov/Se, Ov/irradiated (Irr) and Ov/ Se/Irr. A bone defect was created on the tibia of all animals 40 days after ovariectomy. Two days after surgery, only the Ov/Se and Ov/Se/Irr rats received 0.8 mg Se/kg. Three days after surgery, only the Ov/Irr and Ov/Se/Irr rats received 10 Gy of X-rays on the lower limb region. The animals were euthanized at 7, 15, 22 and 29 days after surgery to assess the repair process, which was evaluated by analysis of trabecular bone number (Masson Trichrome) and birefringence analysis (Picrosirius). It was possible to observe a delay in the bone repair process in the ovariectomized/irradiated group and similarity between the ovariectomized, Ov/ Se and Ov/Se/Irr groups. Our findings suggest that sodium selenite may influence a radioprotective effect in the bone repair of tibia of ovariectomized rats without toxicity.

• Proceedings of the Korean Nutrition Society Conference
• /
• 2002.11a
• /
• pp.130-130
• /
• 2002