No abstract available.
Aged* ; Female ; Humans ; Sarcoma, Kaposi*

No abstract available.
Aged* ; Female ; Humans ; Sarcoma, Kaposi*

No abstract available.
Humans ; Pneumoconiosis*

No abstract available.
Animals ; Rats*

No abstract available.
Epinephrine*

No abstract available.
Epinephrine*

No abstract available.
Animals ; Coal* ; Dust* ; Lung* ; Rats* ; Silicon Dioxide*

PURPOSE: The umbilical cord blood has been considered as an alternative source of hematopoietic stem cells for transplantation. The CD34+ is known as a common stem cell antigen and the CD34+ CD38- immunophenotype reportedly defines a primitive subpopulation of progenitor cells. In this study the frequency of CD34+ and CD34+ CD38- hematopoietic stem/progenitor cells in placental/cord blood (UCB), and adult peripheral blood (PB) were determined. METHODS: Between July and September 1998, 27 collections of UCB were performed at the obstetric units of Hanyang University Hospital. Fifteen adult PB samples were also obtained for control. RESULTS: The frequency of total CD34+ cells in UCB was higher (1.13+/-0.58% vs 0.46+/-0.30%, P=0.0002) than PB and the frequency of CD34+ CD38- cells in UCB was also greater (0.02+/-0.02 vs 0.01+/-0.01, P=0.035) than PB. The majority of UCB- and PB-derived CD34+ cells expressed CD38- antigen (98.22+/-2.11% in UCB and 97.85+/-2.56% in PB). The frequency of CD38- expression by UCB derived CD34+ cells was slightly higher (not statistically significant) than that by PB derived CD34+ cells. The frequency of CD34+ cells was increased linearly with birth weight (r=0.413). CONCLUSION: These results suggest that UCB could be a useful source of highly primitive hematopoietic stem cells for marrow reconstitution after bone marrow ablation.
Adult* ; Birth Weight ; Bone Marrow ; Fetal Blood* ; Hematopoietic Stem Cells ; Humans ; Stem Cells

PURPOSE: Throat culture for streptococcal pharyngitis is a gold standard to diagnose, but it may be misleading to interpret due to the carriers. The isolation rates of beta-hemolytic streptococci (BHS) and Streptococcus pyogenes in the school children in Chinju were investigated and compared with those of Kangwon, Chungnam and Seoul previously reported. METHODS: Throat cultures were taken from the healthy 476 elementary school children who had no symptoms or signs of upper respiratory tract infection in April 1995, and the beta-hemolytic streptococci were identified with bacitracin disk (0.04 U) and latex agglutination. RESULTS: One-hundred fifty-four (32.4%) yielded BHS and 88 (18.5%) had S. pyogenes. The serogrouping revealed 30 (6.7%) group G, 24 (5.0%) group C, 4 (0.8%) group B, and 8 (1.7%) non-group A,B,C,G respectively. CONCLUSIONS: The isolation rate of BHS in Chinju was significantly higher (p<0.001) than the results of Kangwon, Chungnam and Seoul. The identification of BHS was also different from the other areas. In addition to these bacteriologic investigation, the study should be followed whether these carriers were simple contact ones or suffered from asymptomatic infections, and the epidemiologic study using serotyping, such as M or T typing, is necessary.
Agglutination ; Asymptomatic Infections ; Bacitracin ; Child* ; Chungcheongnam-do* ; Epidemiologic Studies ; Gangwon-do* ; Gyeongsangnam-do* ; Humans ; Latex ; Pharyngitis ; Pharynx* ; Respiratory Tract Infections ; Seoul* ; Serotyping ; Streptococcus pyogenes

This study was conducted to investigate the effects of rapamycin treatment during in vitro maturation (IVM) on oocyte maturation and embryonic development after parthenogenetic activation (PA) and somatic cell nuclear transfer (SCNT) in pigs. Morphologically good (MGCOCs) and poor oocytes (MPCOCs) were untreated or treated with 1 nM rapamycin during 0-22 h, 22-42 h, or 0-42 h of IVM. Rapamycin had no significant effects on nuclear maturation and blastocyst formation after PA of MGCOCs. Blastocyst formation after PA was significantly increased by rapamycin treatment during 22-42 h and 0-42 h (46.6% and 46.5%, respectively) relative to the control (33.3%) and 0-22 h groups (38.6%) in MPCOCs. In SCNT, blastocyst formation tended to increase in MPCOCs treated with rapamycin during 0-42 h of IVM relative to untreated oocytes (20.3% vs. 14.3%, 0.05 < p < 0.1), while no improvement was observed in MGCOCs. Gene expression analysis revealed that transcript abundance of Beclin 1 and microtubule-associated protein 1 light chain 3 mRNAs was significantly increased in MPCOCs by rapamycin relative to the control. Our results demonstrated that autophagy induction by rapamycin during IVM improved developmental competence of oocytes derived from MPCOCs.
Animals ; Embryonic Development/*drug effects ; Female ; In Vitro Oocyte Maturation Techniques/veterinary ; Nuclear Transfer Techniques/*veterinary ; Oocytes/growth & development ; *Parthenogenesis ; Sirolimus/*pharmacology ; Sus scrofa/*growth & development/metabolism