Type I and type II collagens are considered the major collagens of bone and cartilage respectively. Monitoring the patterns of those gene and protein expressions during development will provide a basis for the understanding of the normal and abnormal growths. This study was undertaken to investigate the expression of collagen genes and proteins involved in the developing human mandible. Fifty embryos and fetuses were studied with Alcian blue-PAS, Masson's Trichrome, reverse transcription polymerase chain reaction (RT-PCR), Western blot analysis, and Southern blot analysis. Our results showed that pro-alpha1(II) collagen gene expression begins in the 5th week. Type II collagen is synthesized in mesenchymal cells in advance of overt chondrogenesis. The gene expression for type II collagen was highest during the appearance of Meckel's cartilage. There was a switch in collagen protein expression from type I to type II during the appearance stage of Meckel's cartilage. The distribution of the mRNA for type II collagen corresponded well with the pattern of type II collagen protein. The endochondral ossification was observed where there was direct replacement of cartilage by bone.
Blotting, Southern ; Blotting, Western ; Cartilage ; Chondrogenesis ; Collagen ; Collagen Type II* ; Embryonic Structures ; Fetus ; Gene Expression ; Humans* ; Mandible* ; Polymerase Chain Reaction ; Reverse Transcription ; RNA, Messenger

We have examined the in vitro stage-related chondrogenic potential of human mandibular and limb bud mesenchyme cells using micromass culture, Our results indicate that limb bud mesenchyme cells as early as stage 16 by Carnegie system (37 days), well before the initiation of in vivo chondrogenesis, have chondrogenic potential which is expressed in micromass culture, These results are correlated with stage-related chondrogenic potential of human limb bud in vivo as a result of Alcian blue staining. The proliferation of chondrogenic cells increased in the first 3 days after culture and then decreased. These results were correlated with the cell cycle analysis of which the number of G degrees/G1 phase increased markedly after 3 days of culture, while the percentage of cells in S phase was decreased, On the other hand, it was rarely differentiated in the mandible. We examined the effects of two PKC modulators such as phorbol 12-myristate 13-acetate (PMA), a potent activator of PKC, and staurosporine (STSN), an inhibitor of PKC. PMA inhibited the chondrogenesis, whereas STSN promoted the chondrogenesis in a dose dependent manner. In addition, PMA exerted no inhibitory effect when the cells were pretreated for 24 h with STSN, implying that the chondrogenic events might be settled at an early step in vitro and PKC may act as a negative modulator, Collectively, these results demonstrate, for the first time, the stage-related chondrogenic potential of human mandibular and limb bud mesenchyme cells and the role of PKC during chondrogenesis in vitro & in vivo.
Alcian Blue ; Cell Cycle ; Chondrogenesis ; Embryonic Structures* ; Extremities* ; Hand ; Humans* ; Limb Buds* ; Mandible ; Mesoderm ; Protein Kinase C* ; Protein Kinases* ; S Phase ; Staurosporine

OBJECTIVE: Acute inflammatory lesions in the placenta is one of the most common histopathologic lesions of women with preterm premature rupture of membrane. But there is a few scientific evidence to support the association between amniotic fluid white blood cell count and the presence and severity of acute placental inflammation in preterm premature rupture of membrane. To evaluate the relationship between amniotic fluid white blood cell count and the presence and severity of acute placental inflammatory lesions in preterm premature rupture of membrane. METHODS: The relationship between amniotic fluid white blood cell count and placental histologic finding was examined in 89 consecutive patients who were admitted with the diagnosis of preterm premature rupture of membrane and who delivered singleton gestation within 3 days. RESULTS: The prevalence of acute histologic chorioamnionitis was 68.5%(61/89) and that of positive amniotic fluid culture was 32.6%(29/89). The prevalence of positive amniotic fluid culture increased according to the higher severity of inflammation in each type of placental section(p<0.05 for each). The median amniotic fluid white blood cell count increased significantly according to the presence and higher severity of inflammation in each type of placental section(p<0.01 for each). The median amniotic fluid white blood cell count increased significantly according to the higher total grade of inflammation in placental histologic examination(p<0.01). CONCLUSION: Both the presence and higher severity of acute histologic chorioamnionitis are associated with an elevated amniotic fluid white blood cell count. The total grade of acute histologic chorioamnionitis is associated with an elevated amniotic fluid white blood cell count. Amniotic fluid white blood cell count is a reliable prenatal marker of histologic chorioamnionitis."
Amniotic Fluid* ; Chorioamnionitis ; Diagnosis ; Female ; Humans ; Inflammation* ; Leukocyte Count* ; Leukocytes* ; Membranes* ; Placenta ; Pregnancy ; Prevalence ; Rupture*

To determine the concentration and the physiologic role of metal components in blood plasma and seminal plasma in relation to male infertility, the concentrations of twelve metal components in blood plasma and seminal plasma including Na, Mg, K, Ca, Cr, Mn, Fe, Cu, Zn, Se, Cd and Pb were measured by atomic absorbance spectrophotometery or ion selective electrode analysis. Semen and blood samples were obtained from a total of 110 men including 70 male infertility patients, 20 vasectomized persons and 20 fertility proven volunteers visited to the Male Infertility Clinic of Pusan National University Hospital. The concentrations of Ca, Zn, Mg, Cr and Cd in control group were higher in seminal plasma than in blood plasma, and additionally Pb were higher in infertility group. The concentrations of all metal components revealed no significant difference according to patients' age, resident, occupation, sperm density, motility and hormone level in blood plasma, but some metal components including Ca, Mg, Cu, Mn, Cd and Pb revealed a significant difference according to each these parameters except patient's age in seminal plasma. The concentrations of Mn, Cd and Pb in the vasectomy persons were higher than in the infertility group III including testicular and epididymal factors, but not in blood plasma. We conclude that the quantitative changes of metal components in the seminal plasma may have effects on not only spermatogenesis and sperm function, but also contribute to diagnostic parameter according to organ specificity of the metal in the male reproduction.
Busan ; Electrodes ; Fertility ; Humans ; Infertility ; Infertility, Male ; Male* ; Occupations ; Organ Specificity ; Plasma ; Reproduction ; Semen* ; Spermatogenesis ; Spermatozoa ; Vasectomy ; Volunteers

No abstract available.

Uterine didelphys with unilateral hematometra, hemicolpos, and ipsilateral renal agenesis is a rare m01lerian duct malformation. Uterine didelphys with an obstructed hemivagina is frequently associated with renal agenesis, mostly ipsilateral to the blind vaginal pouch. Accurate early diagnosis and septal resection elevate pregnancy rate and birth rate but it is difficult to find these malfomations until the complication associated with pregnancy was developed. We report a case of successful gestational outcome in the presence of preterm labor due to hematometrocolpora caused by uterine didelphys with unilateral imperforated vagina and ipsilateral renal agenesis with brief review of the literatures.
Birth Rate ; Early Diagnosis ; Female ; Hematometra ; Obstetric Labor, Premature ; Pregnancy ; Pregnancy Rate ; Uterus* ; Vagina

No abstract available.
Adenocarcinoma*

Although anterior fusion has several advantages in the management of fracture-dislocations of cervical spine than posterior methods, it has not been used in common. Because, it does not give sufficient stability to prevent the dislodgment of the graft and angular deformity and it requires prolonged rigid external immobilization. In order to promote the stability and to reduce the external support, authors have fixed with plate and screws in anterior spine fusion for various type of fracture-dislocations of cervical spine, and report the results of 29 consecutive cases. Minimum follow-up period was 6 months (Av. 12mos.). Two level fixation after anterior decompression by corpectomy was done in 7 cases. Ambulation was started from the day after operation with aid of orthosis, regardless of the neurological status. Bone union was observed in all, but one expired case, within 2–3 months. There was no failure in fixation and no worsening in neurology. Improvement of neurological status were observed in 17 patient during and follow up periods of treatment, among 23 patient with neurological symptoms on arrival. The observed complications of hoarseness(2 csses), dysphagia(2 cases) and Horner's syndrome(1 case) were improved later, but the patient with pneumonia was expired one month after operation. It is concluded that the procedure is a safe and better alternative for the fracture-dislocations including flexion injury between C2-T1, because it provides good stability, rapid union, short external support and possibility of neural decomprssion.
Congenital Abnormalities ; Decompression ; Dislocations ; Follow-Up Studies ; Humans ; Immobilization ; Neurology ; Orthotic Devices ; Pneumonia ; Spine ; Transplants ; Walking

Neither the cause nor the correct treatment of Kienbocks disease has been clearly established, but its clinical and radiologic presentations have been distinctly defined. There are many controversies concerning therapeutic guidelines for the treatment of Kienbocks disease. The purpose of this study is to evaluate the clinical result of triscaphe fusion with radial styloidectomy of Kienbocks disease. Ten cases of stage III Kienbocks disease by Lichtmans classification were treated by triscaphe fusion with radial styloidectomy from September 1991 to March 1997. We followed up over 24 months and evaluated clinical results. In all cases, pain was relieved. The postoperative results according to Kuschners method revealed three excellent, six good and one fair. The triscaphe fusion and radial styloidectomy was considered as useful method of treatment which has clinical efficacy in Kienbocks disease.
Classification ; Osteonecrosis*

Aneurysm of the pulmonary artery is a rate entity. A neonate was seen with cyanosis and tachypnea. There was a grade 4/6 systolic murmur along the left sternal border. The chest X-ray showed a round mass shadow in the left parahilar region. Echocardiogram showed large Ventricular Septal Defect and mild Pulmonary Stenosis. The cardiac angiogram showed giant aneurysm of pulmonary artery. Surgical intervention was advised. However, the patient was discharged against operative plan. And the patient died two weeks later.
Aneurysm* ; Cyanosis ; Heart Septal Defects, Ventricular* ; Humans ; Infant, Newborn ; Pulmonary Artery ; Pulmonary Valve Stenosis* ; Systolic Murmurs ; Tachypnea ; Thorax