No abstract available.
Criminals* ; Humans

No abstract available.
Criminals* ; Humans

Electron microscopic observation of fine structural changes of Sertoli cells in the male sterility patients was made on 10 histologically proved cases. They were histologically classified to 3 groups by Nelson's classification, hypospermatogenesis, spermatogenic arrest and germinal cell aplasia. The results obtained were summarized as follows. l) The findings of ultrastructures of Sertoli cells in the normal man showed no significant differences with other author's results. 2) The ultrastructures of Sertoli cells in the male sterility revealed degenerative changes, characterized by fragmentation and dilatation of subsurface cisternae, swelling and vacuolization of mitochondria with decrease in the number of cristae and poor development of Golgi apparatus. And also observed were proliferative changes, characterized by increase in the number of sER, rER and ribosome. These morphological changes were severer in spermatogenic arrest and the severest in germinal cell aplasia. 3) The results were suggested that the most significant ultrastructural changes of Sertoli cells of male sterility were the degenerative changes of the organelles of protein synthesis and protein transport system such as rER, ribosome and Golgi apparatus.
Classification ; Dilatation ; Golgi Apparatus ; Humans* ; Infertility ; Infertility, Male* ; Male ; Male* ; Mitochondria ; Oligospermia ; Organelles ; Protein Transport ; Ribosomes ; Sertoli Cell-Only Syndrome ; Sertoli Cells*

No abstract available.

No abstract available.

No abstract available.
Chromosome Aberrations* ; Ultrasonography*

No abstract available.
Coronavirus Infections/epidemiology/*prevention & control ; Disease Outbreaks ; Humans ; Public Health ; Republic of Korea/epidemiology ; Research

No abstract availalbe.
Hepatitis* ; Interferons* ; Lamivudine*

No abstract available.
Cell Cycle*

OBJECTIVES: The purpose of this study in intrauterine growth retardation(IUGR) is to assess the relationship between the Doppler flow velocimetry and pregnancy outcome. STUDY DESIGN: 356 normal and 159 growth retarded fetuses between 21 and 42 gestati- onal weeks were investigated retrospectively. All IUGR fetuses were divided into four gro- ups according to the results obtained by Doppler flow velocities as follows. 1) Group 1(n= 89) : patients had normal umbilical artery resistance index ( Rlu ) and normal middle cerebral artery resistance index ( Rlmca ) 2 ) Group 2 ( n= 9 ) : patients had normal Rlu and abnormal Rlmca 3 ) Group 3 ( n=25 ) : patients had abnormal Rlu and normal Rlmca 4) Group 4 ( n=36 ) : patients had abnormal Rlu and abnormal Rlmca. RESULTS: We obtained normal values of RIu and RImca in oriental. Abnormal cardiotoc- ography(CTG) findings and operative delivery for fetal distress were significantly increased in group 2(p < 0.05) and markedly increased in group 3 and 4 ( p < 0.01 ) compared with group 1. Adverse neonatal outcome was significantly increased in group 3 and 4 compared with group 1. There is significant increase of adverse neonatal outcome in group 4 compared with group 3 ( p < 0.05 ). CONCLUSIONS: We obtained the normal values of Rlu, Rlmca and cerebroplacental ratio ( CPR ) in oriental. Adverse neonatal outcome was significantly increased in group 2, 3 and 4 compared with group 1. There is significant increase of adverse neonatal outcome in gr- oup 4 compared with group 3. We also found a strong correlation between the CPR and adverse neonatal outcome in IUGR. In IUGR, centralization of the fetal circulation turned out to exist, resulting in a preferential shunting of blood flow to the fetal brain. Brain-sp- aring effect with Doppler flow velocimetry could be demonstrated by this result.
Brain ; Cardiopulmonary Resuscitation ; Female ; Fetal Distress ; Fetal Growth Retardation* ; Fetus* ; Humans ; Middle Cerebral Artery* ; Pregnancy ; Pregnancy Outcome* ; Pregnancy* ; Reference Values ; Retrospective Studies ; Rheology* ; Umbilical Arteries