In the rat, the neural plate appears at day 9 and the neural tube closes at day 10.3. During neurulation, the neuroepithelium is exposed directly to amniotic fluid and blood circulation begins at day 10.5. Accordingly, amniotic fluid may be an important source of nutrition for normal development of the nervous system. Among many different components of amniotic fluid, glucose is known as common currency of metabolism and the developing embryo is more dependent on this. The purpose of this study is to provide basic data on the capacity of amniotic fluid as a source of glucose for neurulating rat embryos. In the first part of this paper, isolated days 10, 11 and 16 rat embryos with intact amnion were used to pursue the change of the glucose concentratons in the amniotic fluid. The day 10 embryo amniotic fluid glucose disappeared after 20 minutes, and the day 11 amniotic fluid glucose disappeared after 33 minutes. The day 16 amniotic fluid glucose showed no significant changes during 40 minutes. In the second part of this paper, the author determined the time required for glucose concentraton in the day 10 amniotic fluid to be 0 mg% at glucose free Hanks` solution. The day 10 amniotic fluid glucose disappeared afttar 10 minutes. Another embryos were exposed to glucose free Hank`s solution for 10 minutes, and switched immediately to regular Hank`s for measuring the changes of amniotic fluid glucose, that is `charging Phenomena`. During the first 15 minutes amniotic glucose was charged to nearly normal level, and after that it decreased. These changes were similar to the results from the first experiment. These results indicate that neurulating embryo has a potential for restoring its amniotic glucose concentration to the normal level rapidly. So harmful effects of hypoglycemic states may be compensated by this `charging phenomena` of amniotic fluid during neurulation.
Amnion ; Amniotic Fluid* ; Animals ; Blood Circulation ; Embryonic Structures* ; Female ; Glucose* ; Metabolism ; Nervous System ; Neural Plate ; Neural Tube ; Neurulation ; Rats*

Morphological characteristics of human embryos of Carnegie stage 17 were described. The crown rump length of these embryos were 11.7-13.6mm. These embryos were characterized externally by ventrally directed nasal pits, 6 distinct auricular hillocks, finger rays in the hand plate, digital plate at the lower limb bud, herniation of a part of midgut through umbilical cord, and internally by the partial fusion of ventral and dorsal pancreas, prominent nasal sac which is not open to primitive oral cavity, formation of segmental and some subsegmental bronchial buds, branching of metanephrotic pelvis, crescent-shaped lens cavity, and imminent semicircular ducts.
Crown-Rump Length ; Embryonic Structures* ; Fingers ; Hand ; Humans* ; Lower Extremity ; Mouth ; Pancreas ; Pelvis ; Semicircular Ducts ; Umbilical Cord

Respiratory syncytial virus (RSV) and Influenza virus are the most common pathogen for causing severe upper respiratory infection in all age groups. A multiplex reverse transcription polymerase chain reaction (RT-PCR) has been developed to detect and subtype influenza A (H3N2 and H1N1), B virus and RSV simultaneously in one tube reaction. Amplification with primers derived from conserved sequences within the nucleocapsid for RSV and hemagglutinin subunit for Influenza A (H3N2 and H1N1) and B viruses yielded a 384 bp, a 300 bp, a 236 bp and a 151 bp, respectively. Assay specificity was confirmed by pulse field gel electrophoresis and autosequencing method. Assay sensitivity was 3 PFU/ml of RSV, 22 PFU/ml, 45 PFU/ml of Influenza type A (H3N2 and H1N1) and 6.6 PFU/ml of Influenza B virus by plaque assay. A rapid and sensitive detection method of a one-tube with multiplex RT-PCR capable of identifying more than one viral template as well as synchronizing reverse transcription and PCR had the potential to produce considerable savings of time and cost effectiveness in the diagnostic laboratory.
Conserved Sequence ; Cost-Benefit Analysis ; Electrophoresis ; Hemagglutinins ; Herpesvirus 1, Cercopithecine ; Humans* ; Income ; Influenza B virus ; Influenza, Human* ; Nucleocapsid ; Orthomyxoviridae* ; Polymerase Chain Reaction* ; Respiratory Syncytial Virus, Human* ; Respiratory Syncytial Viruses ; Reverse Transcription* ; Sensitivity and Specificity

No abstract available.
Facial Asymmetry* ; Prognathism*

BACKGROUND: Recently the percutaneous transradial approach for coronary angiography, transluminal coronary angioplasty or coronary stention were reported but there was no report in Korea. So we tested the safety and efficacy of the transradial appreach for coronary angiography in Korean. METHODS: Eleven patients(male 9, female 2, mean age 59.3 yeal old)with chest pain underwent percutaneous transradial coronary angiography with 5 french multipurpose catheter. We evaluated clinical efficacy and observed complication of percutaneous transradial coronary angiography by physical examination and DOpple ultrasonography of puncture site of radial artery. RESULTS: Right coronary angiography and left ventriculography were performed successfully in all cases, but left coronary angiogrphy was failed in three cases. In another three cases, the patient complained of arm pain which was aggravated during manipulation of the catheter. After the procedure, it took 10.3 minutes to stop the bleeding at the puncture site, Clinically significant complications were not observed after the procedure. The patients were not restricted to bed at all since the completion of the procedure. CONCLUSION: In our limited dexperience, percutaneous transradial coronary angiography could be performend on the outpatient basis without significant complications.
Angioplasty ; Arm ; Catheters ; Chest Pain ; Coronary Angiography* ; Female ; Hemorrhage ; Humans ; Korea ; Outpatients ; Physical Examination ; Punctures ; Radial Artery ; Ultrasonography

No abstract available.

No abstract available.

No abstract available.
Finite Element Analysis* ; Prostheses and Implants* ; Tooth*

No abstract available.
Animals ; Iproniazid* ; Monoamine Oxidase* ; Rats* ; Tyramine*

No Abstract Available.
Retinal Detachment* ; Retinaldehyde*