No abstract available.
Animals ; Mice* ; Oocytes*

No abstract available.
Animals ; Cryopreservation* ; Embryonic Structures* ; Mice* ; Ovum*

PURPOSE: The aim of this retrospective study is to analyze the relationship between local factors and survival rate of dental implant which had been installed and restored in Seoul Veterans Hospital dental center for past 10 years. And when the relationship is found out, it could be helpful to predict the prognosis of dental implants. MATERIALS AND METHODS: A retrospective study of patients receiving root-shaped screw-type dental implants placed from January 2000 to December 2009 was conducted. 6385 implants were placed in 3755 patients. The following data were collected from the dental records and radiographs: patient's age, gender, implant type and surface, length, diameter, location of implant placement, bone quality, prosthesis type. The correlations between these data and survival rate were analyzed. Statistical analysis was performed with the use of Kaplan-Meier analysis, Chi-square test and odds ratio. RESULTS: In all, 6385 implants were placed in 3755 patients (3120 male, 635 female; mean age 65 +/- 10.58 years). 108 implants failed and the cumulative survival rate was 96.33%. There were significant differences in age, implant type and surface, length, location and prosthesis type (P<.05). No significant differences were found in relation to the following factors: gender, diameter and bone quality (P>.05). CONCLUSION: Related factors such as age, implant type, length, location and prosthesis type had a significant effect on the implant survival.
Dental Implants ; Dental Records ; Hospitals, Veterans ; Humans ; Kaplan-Meier Estimate ; Male ; Prognosis ; Prostheses and Implants ; Retrospective Studies ; Survival Rate

In the studies on the hatching mechanisms in mammals, many investigators focused on the embryonic intrinsic factor(s) in in vitro culture, but the uterine environment as the extrinsic factor(s) is thought to play an important role in hatching mechanism. Therefore, to evaluate the effect of uterine environment on the hatching event in vivo, the immature(GV) and ovulated(MII) oocytes, and the late 2-cell embryos of mouse were transferred to pseudopregnant foster mother's uterus during peri-implantation period. So it was verified whether there would happen hatching by only uterine environment independently on embryonic stage. The ultrastructural changes of the zona surface of transferred group were compared with those of in vivo and vitro group by SEM. 36 hrs after transfer, the immature and ovulated oocytes almost degenerated, and the late 2-cell embryos developed to various embryonic stages. However, the embryos which didn't develop to blastula stage did not hatch. The ultrastructural network of ZP in transferred group seemed to be smoothed uniformly, which was different from in vitro group. In conclusion, it is suggested that the uterine environment during peri-implantation period enhances the embryo hatching by provoking the structural change of ZP.
Animals ; Blastula ; Embryonic Structures* ; Herpes Zoster* ; Humans ; Mammals ; Mice* ; Oocytes* ; Research Personnel ; Uterus ; Zona Pellucida*

No abstract available.
DNA Topoisomerases* ; DNA*

No abstract available.
Animals ; Cytochrome P-450 Enzyme System* ; Cytochromes* ; Gene Expression* ; Mice*

Sodium nitroprusside is reported to inhibite platelet aggregation. We studied the effects of sodium nitroprusside on platelet aggregation function were in 30 adult patients undergoing spine surgery with enflurane anesthesia. Platelet-rich plasma from patients receiving sodium nitroprusside was studied for aggregation in response to adenosine diphosphate, epinephrine and collagen. Maximum aggregation rate and maximum aggregation time were evaluated serially from the samples collected at post-induction (pre-sodium nitroprusside infusion), 30 min and 90 min after sodium niroprusside infusion. The mean maximum aggregation rate of adenosone diphosphate, epinepherine and collagen at post-induction decreased significantly 30 min and 90 min after sodium nitroprusside infusion (P 0.05),but maximum aggregation time showed no significant changes. The correlation between total sodium nitroprusside dose delivered and maximum aggregation rate of adenosine diphosphate, epinepherine and collagen were r=-0.54 (P<0.05), r=-0.706 (P<0.05) and r=-0.794 (P<0.05). In summary, in situation in which sodium nitroprusside is administered during deliberate hypotensive anesthesia, the anesthesiologist must be aware of the potential for the inhibition of platelet aggregation.
Adenosine Diphosphate ; Adult ; Anesthesia* ; Blood Platelets* ; Collagen ; Enflurane ; Epinephrine ; Humans ; Nitroprusside* ; Platelet Aggregation* ; Platelet-Rich Plasma ; Sodium* ; Spine

In obsterics and gynecology laparoscopic surgery is increasing in numbers and gaining wide popularity replacing classical laparotomy and is becoming new trend in surgical fields. Laparoscopic surgery is favoured over the classical laparotomy because of numerous advantages but it can cause complications by insuffulatory CO2 to induce artificial pneumoperitoneum. Therefore, wide knowledges and thorough understandings of anesthesiologist on the prevention of complications and their treatments are essential. Authors present one case that the patient developed subcutaneous emphysema and ateleciasis on right upper lobe, pulmonary edema in left side lung resulting from inadvertent one lung ventilation during laparoscopic hysterectomy under general anesthesia and on trendelenberg position.
Anesthesia, General* ; Gynecology ; Humans ; Hysterectomy* ; Laparoscopy ; Laparotomy ; Lung ; One-Lung Ventilation* ; Pneumoperitoneum, Artificial ; Pulmonary Edema ; Subcutaneous Emphysema*

BACKGROUND: The intravenous infusion of sodium nitroprusside is widely used as a means of producing deliberate hypotension in a variety of clinical situations. However, sodium nitroprusside reported to inhibit platelet aggregation. So we studied the effects of sodium nitroprusside on platelet function in patients undergoing intracranial aneurysm surgery with isoflurane anesthesia. METHODS: Platelet rich plasma from the patients receiving sodium nitroprusside was studied for aggregation in response to adenosine diphosphate, epinephrine and collagen. Maximum aggregation rate and maximum aggregation time were evaluated from the samples collected at pre-sodium nitroprusside infusion, 30min and 90min after sodium nitroprusside infusion, respectively. At the same time, bleeding time was measured. RESULTS: The mean maximum aggregation rate of adenosine diphosphate, epinephrine and collagen at pre-sodium nitroprusside infusion decreased significantly 30min and 90min after sodium nitroprusside infusion, respectively(P<0.05). But the maximum aggregation time showed no significant change. Prolongation of bleeding time was not observed after sodium nitroprusside infusion. Correlation between the total sodium nitroprusside dose delivered and the maximum aggregation rate of adenosine diphosphate, epinephrine and collagen were significant (r=0.797(P<0.05), r=0.732 (P<0.05) and r=0.737(P<0.05)). CONCLUSIONS: In situation where sodium nitroprusside is administered for deliberate hypotensive anesthesia during intracranial aneurysm operation, the platelet aggregation was inhibited by sodium nitroprusside. However, bleeding time was not prolonged.
Adenosine Diphosphate ; Anesthesia* ; Anesthetics ; Bleeding Time ; Blood Platelets* ; Collagen ; Epinephrine ; Humans ; Hypotension ; Infusions, Intravenous ; Intracranial Aneurysm* ; Isoflurane* ; Nitroprusside* ; Platelet Aggregation* ; Platelet-Rich Plasma ; Sodium*

PURPOSE: Long-term use of topical medication is needed for glaucoma treatment. One of the most commonly prescribed classes of hypotensive agents are prostaglandin analogs (PGs) used as both first-line monotherapy; as well as in combination therapy with other hypotensive agents. Several side effects of eye drops can be caused by preservatives. The purpose of this study was to evaluate the effects of PGs with varying concentrations of benzalkonium chloride (BAC), alternative preservatives, or no preservatives on human conjunctival fibroblast cells. METHODS: Primary human conjunctival fibroblast cells were used in these experiments. Cells were exposed to the following drugs: BAC at different concentrations, bimatoprost 0.01% (with BAC 0.02%), latanoprost 0.005% (with BAC 0.02%), tafluprost 0.0015% with/without 0.001% BAC and travoprost 0.004% (with 0.001% Polyquad) for 15 and 30 minutes. Cell cytotoxicity was evaluated by phase-contrast microscopy to monitor morphological changes of cells, Counting Kit-8 (CCK-8) assay to cell viability, and fluorescent activated cell sorting (FACS) analysis to measure apoptosis. RESULTS: BAC caused cell shrinkage and detachment from the plate in a dose-dependent manner. Morphological changes were observed in cells treated with bimatoprost 0.01% and latanoprost 0.005%. However, mild cell shrinkage was noted in cells treated with tafluprost 0.0015%, while a non-toxic effect was noted with travoprost 0.004% and preservative-free tafluprost 0.0015%. CCK-8 assay and FACS analysis showed all groups had a significantly decreased cell viability and higher apoptosis rate compared with the control group. However, travoprost 0.004% and preservative-free tafluprost 0.0015% showed lower cytotoxicity and apoptosis rate than other drugs. CONCLUSIONS: This in vitro study revealed that BAC-induced cytotoxicity is dose-dependent, although it is important to emphasize that the clinical significance of toxicity differences observed among the different PGs formulations has not yet been firmly established. Alternatively preserved or preservative-free glaucoma medications seem to be a reasonable and viable alternative to those preserved with BAC.
Apoptosis ; Cell Line ; Cell Survival/drug effects ; Conjunctiva/drug effects/*pathology ; Fibroblasts/drug effects/pathology ; Glaucoma/drug therapy/pathology ; Humans ; Preservatives, Pharmaceutical/*pharmacology ; Prostaglandins, Synthetic/*pharmacology