In mammal, lots of follicles start simultaneously their growth but only a few oocytes are ovulated in every sexual cycles. Most of matured and grown oocytes are destined to degenerate by atresia. However, the molecular and physiological mechanisms are not elucidated yet. The present study was designed to establish an induction method of follicular atresia with ketamine or pentobarbitone and evaluate the effect of these anesthetics on oocyte maturation and granulosa cell apoptosis of the mouse ovarian follicle. The percentages of degenerated oocyte and apoptotic granulosa cell in ketamine treated groups were significantly higher than that in controls (58.9% vs 33.5%, p<0.01, degeneration; 44.9% vs 26.6%, p<0.01, apotosis). Futhermore, it was revealed that the concentrations of progesterone in both groups were markedly higher than that in control. In conclusion, it is considered that ketamine induce an atresia as pentobarbitone, and may be useful for inducing follicular atresia.
Anesthetics ; Animals ; Apoptosis ; Female ; Follicular Atresia ; Granulosa Cells* ; Ketamine* ; Mammals ; Mice* ; Oocytes* ; Ovarian Follicle ; Ovary* ; Pentobarbital* ; Progesterone

Gonadotropin releasing hormone (GnRH) is believed to be pivotal hormone in hypothalamo-pituitary gonadal axis and the hypothalamus is believed as the exclusive organ producing GnRH and pituitary is for GnRH re ceptor until recently. Some reported the exptra-hypothalamic GnRH or extra-pituitary GnRH receptors from decades ago. The aims of this study are to confirm the existence of the GnRH receptor in bladder epithelial cancer cell, HT-1197 and HT-1376, and evaluated the possible role of the GnRH on cell cycle. The GnRH and GnRH receptor were detected by immunohistochemical staining and the effect of GnRH on cell cycle change in both cell line were studied by fluorescence activated cell sorter (FACS). The control cells were cultured at media supplemented with normal serum, and experimental group were cultured at media supplemented with charcoal stripped serum (CSS) which excluding peptide hormones except exogenous GnRH with different concentration. The GnRHs and GnRH receptors were detected at both cell lines and the cell cycle analysis showed that there were little difference in proportion of cell cycle among examined 10,000 cells in both cell lines, neither control nor experimental groups. This study shows that the GnRHs and GnRH receptors exist in bladder cancer cells and GnRH did not influence on the cell cycle progression. With this study, we suppose that the bladder cancer cells produce the GnRH and GnRH receptors and the role of the GnRF produced from the bladder cancer cells might be the autocrine rather than endo-or paracrine factor.
Axis, Cervical Vertebra ; Cell Cycle* ; Cell Line ; Charcoal ; Fluorescence ; Gonadotropin-Releasing Hormone* ; Gonadotropins* ; Gonads ; Hypothalamus ; Peptide Hormones ; Receptors, LHRH ; Urinary Bladder ; Urinary Bladder Neoplasms

Colorectal cancer (CRC) is the third most commonly diagnosed cancer and the fourth leading cause of cancer death in the worldwide. Colonoscopy is the gold standard for screening and surveillance of CRC. Removing adenomas by colonoscopy has lowered the incidence and mortality of CRC. However, colonoscopy is imperfect for detection of colorectal neoplasia. After a colonoscopy that is negative for malignancy, CRC can be diagnosed. These are termed as post-colonoscopy CRC (PCCRC). The proportion of PCCRC, among all CRC was reported to be 1.8% to 9.0%. It occurred 2.4 times more in the right colon than in the left colon. The causes of PCCRC are missed lesions, incomplete resection, and new lesions. Among these causes, missed lesion and incomplete resection are procedural factors and preventable. Therefore, it is necessary to improve the quality of colonoscopy to minimize the occurrence of PCCRC.

The World Health Organization declared coronavirus disease 2019 (COVID-19) a global pandemic in March 2020. Several vaccines have been developed to overcome the COVID-19 pandemic, and messenger RNA vaccines, commonly known as mRNA vaccines, were the first COVID-19 vaccines to be authorized in Korea. With the worldwide increase in vaccinations, reports of adverse reactions are increasing. However, to the best of our knowledge, there have been no reports of eosinophilic gastroenteritis (EGE) following mRNA vaccination. Here, we present the first case of EGE in a patient who received a second dose of the mRNA vaccine, BNT162b2 (Pfizer-BioNTech). A previously healthy 34-year-old woman presented to the emergency department with generalized abdominal pain for the preceding 2 weeks. She had received a second dose of the mRNA COVID-19 vaccine 2 weeks prior. Subserosal EGE was diagnosed, oral prednisolone was administered, and she recovered completely.

No abstract available.
Pre-Eclampsia*

No abstract available.
Vibration*

The authors studied the formation of giant mitochondria in liver cell. The Sprague Dawley rats were sacrificed following intervals; 5, 10, 20, 30, and 60 minutes after intraperitoneal injection of hydrazine in the amount of 200 microliter/kg. And the extracted liver tissues were examined with light and electron microscopes. The results obtained were summarized as follow; Light microscopically, there is little difference between control and experimental groups. Electron microscopically, elongated, bizzare shaped mitochondria are appears 5 minutes after hydrazine injection. Those show attenuated portion, Y, U, or C shaped feature suggesting fusion or budding mitochondria. The number of giant mitochondria is decreased after 10 minutes group and rarely present in 60 minutes group. The results suggest in this experiment that the formation of giant mitochondria is kind of reversible change and it is different from the mitochondrial swelling of cellular injury. Intermitochondrial fusion and mitochondrial budding may be related with the formation of giant mitochondria.
Rats ; Animals

The association between occupational asbestos exposure and the subsequent development of malignant mesothelioma of pleura is well recognized. We analyzed an asbestos body by energy dispersive X-ray analyser in a case of malignant mesothelioma of pleura who had a history of asbestos exposure 30 years ago. In transmission electron microscope, the asbestos body was composed of a core of refractile thin asbestos fiber bundle and beaded masses of electron-dense iron and protein complex. The core fibers were analyzed as an amphibole type crocidolite fiber [(Na2Fe3Fe2(Si8O22)(OH)2] which composed of high content of silicon, iron and sodium.
Asbestos* ; Asbestos, Crocidolite ; Iron ; Mesothelioma* ; Pleura ; Silicon ; Sodium

BACKGROUND: We evaluated laryngeal mask airway (LMA) insertion conditions, hemodynamic changes and bispectral index (BIS) responses during the induction of anesthesia with target controlled infusion (TCI) of propofol. METHODS: Ninety patients (ASA 1 or 2, 18-64 years) were allocated randomly to receive an infusion to achieve and maintain target blood concentration of a 4, 5 and 6micro gram/ml. LMA was inserted after loss of consciousness. LMA insertion conditions, hemodynamic and BIS responses were evaluated. RESULTS: Loss of consciousness and LMA insertion were more rapid in patients with propofol target blood concentration of a 6micro gram/ml than at the other concentrations. Also, full attenuation of larygeal reflexes on the first try was greater in the 6micro gram/ml group than the other groups. CONCLUSIONS: We conclude that propofol administration at a target blood concentration of 6micro gram/ml allow successful insertion of LMA without major hemodynamic changes.
Anesthesia ; Hemodynamics ; Humans ; Laryngeal Masks* ; Plasma* ; Propofol* ; Reflex ; Unconsciousness

To assess the pattern of psychiatric symptoms and to evaluate the relationship between exposure related variables(duration of work and urinary hippuric acid concenturation) and psychiatric symptoms in organic solvent exposed workers, case control study of forty-two solvent exposed workers and ninety-six non-exposed workers was conducted. The general health questionnaire 28(GHQ28) was administered to evaluate psychiatric symptoms and urinary hippuric acid concenturations was measured to estimate the present status of solvent exposure in exposed group and to estimate normal level in non-exposed group. The meand concenturation of urinary hippuric acid was significantly higher in exposed group (2.953g/creatinine g) than non-exposed group (0.395g/creatinine g) (P<0.01). The total positive rates of symptoms were significantly higher in exposed group(28.2%) than non-exposed group(17.5%) (P<0.05). The positive rates of symptoms for four sub-scales of GHQ 28 in exposed group were in the order of somatic symptoms, anxiety, social dysfunction, depression and in the order of social dysfunction, anxiety, depression, somatic symptoms in non-exposed group.The positive rates of symptoms for somatic symptoms and anxiety were significantly higher in exposed group than non-exposed group (P<0.05) and the proportion of workers with six or more positive symptoms(dysthymic states) in exposed group were significantly higher than non-exposed group (P<0.01). After the effect of age, sex, level of income, level of education, and duration of work were controlled, the total score of GHQ28 was still significantly different between exposed and non-exposed group(P<0.01). In multiple logistic regression analysis on the dysthymic state, the odds ratio of level of income was statistically significant in both group. The odds ratios of exposure related variables such as duration of work and hippuric acid concenturations were not statistically significant but there was a tendency that exposure related variables had an effect on dysthymic state in exposed group.In future, comtinuous evaluation of psychiatric symptoms on organic solvent exposed workers and studies to detect the factors that affect on psychiatric symptoms are required.
Anxiety ; Case-Control Studies ; Depression ; Education ; Logistic Models ; Odds Ratio ; Surveys and Questionnaires ; Solvents* ; Toluene