Background: There have been many reports of coronary angiographic findings after coronary bypass grafting, most of which are focused on the graft patency rate of the bypass conduits. However, postoperative angiography can provide numerous informations other than patency rates that are useful for establishing operative strategy. Material and Method: We studied 73 patients in whom coronary angiography was done after more than 1 month of CABG. Mean interval from the operation to coronary angiography was 10.6 months and the reasons for coronary angiography follow up were residual or recurrent angina in 54 patients, abnormalities on myocardial perfusion scan or echocardiography in 13 patients, and for simple follow up in 6 patients. Result: Overall graft patency rate was 80.9% (internal thoracic artery 100%, saphenous vein 75.0%) in patients of simple follow up and 61.6%(internal thoracic artery 81.1%, saphenous vein 55.3%) in patients with ischemia. Progression of native coronary arterial disease proximal to the grafting site was found in 50 patients(68.5%). Among 201 coronary arterial branches that had not been completely occluded preoperatively, ninty five branches(47.3%) revealed progression of diameter stenosis by more than 20% on the follow up study. Among them, 64 branches(31.8%) progressed to total occlusion. The incidence of disease progression was highter in the coronary arteries with patent grafts(57.5%) than in those with occluded grafts(36.3%)(p<0.05), Comparing internal thoracic artery graft with saphenous vein graft, internal thoracic artery was superior to saphenous vein, not only in terms of patency(83.3% vs 56.6%), but also in terms of result of later percutaneous intervention success rate(100% vs 62%, p<0.05). Conclusion: Due to the considerable incidence of progression of native coronary artery stenosis in the early postoperative periods, bypass grafting of a vessel with borderline stenosis, especially with vein graft, must be done prudently. And it was confirmed again that revascularization of left anterior descending artery is most important and that internal thoracic artery was superior to saphenous vein.
The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
/
v.6
no.3
/
pp.152-163
/
2001
Based upon the sedimentological, geochemical and micropaleontological analyses of two sediment cores from the Antarctic Peninsula (AP), three distinct lithological units can be recognized: (1) ice-proximal an/or ice-distal diamictons in the lower part of the cores, accumulated just seaward of the grounding line of the ice shlef until 11,000 yrs BP; (2) diatomaceous mud between 6,000 and 2,500 yrs BP in the middle part, resulted from a large influx of organic materials by enhanced production of open marine condition; (3) diatomaceous sandy mud since 2,500 yrs BP, characterized by an increase in sand content and decrease in TOC and diatom abundance in the lower layers, which reflects the formation of more extensive and seasonally persistent sea ice. Based on the C-14 radiocarbon dating, the sub-ice shlef deposition of the diamicton on the AP western shelf completed around 11,000 yrs BP. Colder condition was reinstated between 12,800 and 11,600 BP with a dropin TOC content and diatom abundance, which is coincident with the Younger Dryas event in the North Atlanticregion. At this time, the ice shelf, that is now absent in the study area, appears to advance as evidenced by an abrupt increase in sea-ice taxa. A climatic optimum is recognized between 9,000 and 2,500 BP, coincide witha mid-Holocene climatic optimum 'Hypsithermal Warm Period' from the other Antarctic sites. During this time, diatomaceous mud accumulated by a large influx of organic materials by enhanced production occurred in openmarine condition. Around 2,500 BP, diatomaceous sandy mud reflects the formation of more extensive and seasonally persistent sea ice, coincident with the onset of the Neoglacial in the Antarctic. Our results provide evidence of climatic change from the Antarctic Peninsula`s western shelf that helps in determining the existence and timing of Holocene milennial-scale climatic events in the Southern Hemisphere.
Purpose: The proper diagnosis of Meckel's diverticulum (MD) is difficult and delayed because of the variety of clinical manifestations. We reviewed clinical characteristics of symptomatic MD to facilitate early detection. Methods: We analyzed retrospectively the clinical manifestations, diagnostic tools, histopathological findings, and operative findings in 58 patients with symptomatic MD. Results: The male to female ratio was 2.8 : 1. The most common symptom of MD was bleeding. Others symptoms included: vomiting, abdominal pain, irritability, abdominal distension and fever in the order of frequency. The clinical manifestations of symptomatic MD were lower gastrointestinal bleeding, intestinal obstruction, perforation, diverticulitis and hemoperitoneum, in the order of frequency. The causes of intestinal obstruction were intussusception, internal hernia, band, volvulus, invagination, in the order of frequency. Seventy five percent of patient with MD were diagnosed prior to 5 years of age. The most frequently used diagnostic tool was the Meckel's scan. The diverticulum was located 2 cm to 120 cm proximal to the ileocecal valve. The length of the diverticulum ranged from 1 cm to 10 cm and 94% were less than 5 cm. The most common ectopic tissue found in the MD was gastric mucosa. Ileal resection was more frequently performed than diverticulectomy. Conclusion: In cases of unexplained gastrointestinal bleeding, obstruction and repeated intussusception, the meckel's scan, ultrasound and computed tomography shoud be considered to rule out MD, and if clinically necessary, an exploratory laparotomy when needed.
We have isolated several proteinase inhibitor II genes pin2 from a Russet Burbank potato DNA library. One of these, pin2T was subcloned and a 1.8 kb Xbal/Nsil insert was sequenced. This fragment contained the complete Inhibitor II gene including 965 Up of flanking DNA upstream from the gene and 200 bp of flanking DNA downstream from the gene. The open reading frame encodes a protein that is similar to other reported proteinase Inhibitor II proteins. The DNA sequence of the 5' flanking region of pin2T from -714 to +1 is highly homologous (91% identity) with that of the previously isolated wound-inducible pin2K. There are, however, four small deletions in the pin2T promoter which are located at -221 to -200, -263 to -254, -523 to -426 and -759 to -708 relative to the transcription start site of the wound-inducible pin2K. Three of these deletions map to a portion of the promoter that controls the wound-inducibility of the proteinase inhibitor genes. Chimeric genes containing the promoter of the pin2T gene linked with the both CAT and GUS were constructed and transfered into tobacco plants. Analysis of these plants indicated that pin2T is not a wound-inducible gene but is expressed at low levels. Thus, wound-inducibility is lost with the concomitant natural deletion of three small regions of the promoter. Comparision of the sequences deleted in pin2T relative to the pin2K with Genebank sequences indicates that the deleted sequences contain a motif (consensus 5'-AGTAAA-3') that is found in many other wound-inducible genes but not easily found in the published promoter sequences of other plant genes. Nuclear proteins from unwounded and wounded potato leaves were bound to the proximal promoter region, downstream of the 5'-AGTAAA-3', of pin2T. The comparison of the pin2T gone with the pin2K gene indicates that the natural internal promoter deletions are likely responsible for loss of the wound-inducible phenotype in the pin2T gene.
Forty specimens of fossil ophiuroids were collected from two formations of the Cenozoic marine deposits, Duho Formation and Hagjeon Formation, Pohang Basin, Korea. A few specimens were three-dimensionally preserved: most of them were remained flattened and articulated. Although a gross morphology is well preserved in some specimens, the details such as disk shape and plates which is the most important diagnostic features were not observed. Most of the arms are disarticulated, and thus arm vertebra, arm spines and/or arm plates are separately preserved. Only an oral side is recognized in an attached specimens because crossing arms into disk are clearly visible. It is, thus almost impossible to identify Korean ophiuroid fossils as a species level or even a genus level. The fossils were classified into 3 groups by gross morphology of disk and arm, and architecture of vertebra. The most abundant fossils (32 specimens), were found only in the Hagjeon Formation. The majority of specimens are partially disarticulated, having only proximal and median portions of their arms preserved. Arm plates are disarticulated from arm vertebra: most of them show structure of arm vertebra. It has long and well-preserved arm spines, and large tentacle pore. Some specimens (4 specimens) from the Duho Formation is characterized by short and conical arm spines, and well-developed arm plates. Lateral arm plates are small in compared to dorsal and ventral arm plates. The others (4 specimens) is poor in preservation state showing circular oral disk and relatively short sinuous arms. No arm plates are either identified.
This study was carried out to investigate the effects of deer antler extract on the regeneration of peripheral nerves. Sprague-Dawley male rats weighing about 300 gm were fed deer antler extract for 1, 2, and 3 weeks per oral (1.5 ml/100 gm B.W.), respectively, once a day and transected both sides of sciatic nerve of each leg. After keeping for 6 hours, sciatic nerves taken from proximal part of transected region were treated with conventional transmission electron microscopical method and then observed with electron microscope. The results obtained were summarized as follows; 1. Sciatic nerves of normal control group were not showing any sprouts and electron dense axolemmal projections were frequently observed. 2. Sciatic nerves of saline treated groups were showing axonal sprouts at the nodes of Ranvier. The length of them was usually short, and numerous vesicles, vacuoles and organelles including neurofilament were contained. The number of nodes of Ranvier containing sprouts from 100 longitudinal sectioned nerve fibers was 29 (29%) in 1 week treated group, 32 (32%) in 2 weeks treated group, and 30 (30%) in 3 weeks treated group, respectively. 3. Sciatic nerves of deer antler treated groups were showing axonal sprouts at the node of Ranvier as well. Although most of the sprouts were short, some sprouts of 2 weeks and 3 weeks treated groups were quite long. Sprouts usually contained numerous vesicles, vacuoles and cell organelles such as neurofilaments and mitochondria. The number of nodes of Ranvier containing sprouts from 100 longitudinal sectioned nerve fibers was 38 (38%) in 1 week treated group, 46 (46%) in 2 weeks treated group, and 48 (48%) in 3 weeks treated group respectively. The results described above explain pretreatment of deer antler extract improves the sprout formation of transected sciatic nerves, and then it suggests deer antler may be effective for the regeneration of peripheral nerves.
The purpose of this study is to evaluate the effects of surface treatment and composition of reinforcement material on fracture strength of fiber reinforced composite inlay bridges. The materials used for this study were I-beam, U-beam TESCERA ATL system and ONE STEP(Bisco, IL, USA). Two kinds of surface treatments were used; the silane and the sandblast. The specimens were divided into 11 groups through the composition of reinforcing materials and the surface treatments. On the dentiform, supposing the missing of Maxillary second pre-molar and indirect composite inlay bridge cavities on adjacent first pre-molar disto-occlusal cavity, first molar mesio-occlusal cavity was prepared with conventional high-speed inlay bur. The reinforcing materials were placed on the proximal box space and build up the composite inlay bridge consequently. After the curing, specimen was set on the testing die with ZPC. Flexural force was applied with universal testing machine (EZ-tester; Shimadzu, Japan). at a cross-head speed of 1 mm/min until initial crack occurred. The data was analyzed using one-way ANOVA/Scheffes post-hoc test at 95% significance level. Groups using I-beam showed the highest fracture strengths (p<0.05) and there were no significant differences between each surface treatment (p>0.05) Most of the specimens in groups that used reinforcing material showed delamination. 1. The use of I-beam represented highest fracture strengths (p<0.05) 2. In groups only using silane as a surface treatment showed highest fracture strength, but there were no significant differences between other surface treatments (p>0.05). 3. The reinforcing materials affect the fracture strength and pattern of composites inlay bridge. 4 The holes at the U-beam did not increase the fracture strength of composites inlay bridge.
Chun Mi Son;Moon Seong Mi;Lee hye Jin;Lee Eun-Hyun;Song Yeoung Suk;Chung Yong Sik;Park Hee Bung;Kang Seung Hee
Radiation Oncology Journal
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v.23
no.1
/
pp.32-42
/
2005
Purpose : To evaluate the incidence of arm morbidity following breast cancer surgery including axillary dissection and to identify related factors. Materials and Methods : One hundred and fifty nine patients were studied using a self-report questionnaire and a clinical examination. Lymphedema, reduction of range of motion in shoulder joint and subjective symptoms (pain, impaired arm movement, numbness, stiffness) were evaluated. As related factors, demographic, oncologic characteristics and types of treatment were analysed. Results : The incidence of lymphedema ($\geqq$2 cm difference comparing to unaffected arm) was $6.3\%$, $10.7\%$, $22.5\%$ and $23.3\%$ at each 10 cm, 20 cm, 30 cm, and 40 cm from wrist. Reduction of range of motion in shoulder joint ($\geqq$ 20 degree difference comparing to unaffected arm) was noted In more than 1/3 patients for flexion, abduction and internal rotation. Especially the reduction of range of motion in internal rotation was severe ($>50\%$ reduction) in 1/3 patients. Approximately 50 to $60\%$ of patients complained impaired arm movement, numbness, stiffness and pain. Body mass index (BMI) was the significant risk factor for lymphedema. Conclusion : Lymphedema was present in 1/3 of patients and the common sites of edema were 30 cm 40 cm proximal from the wrist. Also most severe reduction of range of motion in shoulder joint was with internal rotation. There needs weight control for lymphedema because BMI was the significant risk factor for lymphedema. Also rehabilitation program for range of motion especially internal rotation In shoulder joint should be developed.
Kim, Hee-Young;Shim, In-Sop;Lee, Hye-Jung;Jeong, Seong-Mok;Kim, Sun-Young;Nam, Tchi-Chou
Journal of Veterinary Clinics
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v.20
no.1
/
pp.22-25
/
2003
The aims of this study were to investigate the efficacy of acupuncture on myoelectrical activity of inflamed or normal colon in the rat, and whether the effect of acupuncture on colonic motility was related to endogenous opioids. Twenty-two male Sprague-Dawley rats were divided into three groups. Experimental groups were normal group (n = 8), colitis group (n = 6) and naloxone group (n = 8). Stainless steel bipolar electrodes were implanted on the serosal layer of the proximal colon of rats. Colitis was induced 7 days after electrode implantation using trinitrobenzene sulphonic acid (TNBS) and ethanol. Electromyograms (EMG) were recorded by using polygraph 11 days after implantation of electrodes. In normal group, normal colonic motility was recorded for 60 min, and then traditional acupuncture at GV-1 was applied for 20 min and EMG was recorded for further 60 min in untreated rats. In colitis group, after recording of basal colonic motility for 60 min, 20 min of acupuncture treatment and further EMG recording was performed for 60 min in TNBS/ethanol treated rats. In naloxone group, following subcutaneous administration of naloxone (3 mg/kg), recording of EMG and acupuncture treatment were performed in TNBS/ethanol treated rats. In the normal group, acupuncture at GV-1 did not induce significant changes in colonic motility. TNBS/ethanol treatment had no significant effect on the frequency of colonic motility. And in colitis group, GV-1 acupuncture significantly decreased colonic motility (p < 0.01). In naloxone group, after injection of naloxone, acupuncture at GV-1 did not change colonic motility in TNBS/ethanol treated rats. On the inflamed colon, naloxone blocked the effect of acupuncture. The present results suggested that endogenous opioids released by acupuncture at GV-1 decrease the motility of inflamed colon in rats, but not normal colon.
The Journal of Korean Orthopaedic Ultrasound Society
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v.3
no.2
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pp.47-53
/
2010
Purpose: We evaluated the efficacy of ultrasonographic examination of the medial collateral ligament injury in elbow joints in the high school male weight lifting athletes. Materials and Methods: The study group (group I) included 15 male weight lifting athletes (average age: 16.8) and the control group (group II) was demographically matched 9 male with no symptoms on their elbow. Both elbow joint was evaluated through physical examination, plain radiograph, valgus stress view and ultrasonography. Results: On plain radiograph, there was no significant differences (3.6 mm, 2.7 mm; p>0.05) for the medial articular distances between both groups. The valgus stress view revealed the significant increase in group I (right, avr. 5.86 mm and 3.52 mm, p<0.01, left, avr. 5.33 mm and 3.64 mm, p<0.01). On ultrasonography, medial joint space was increased in group I (right, avr. 4.66 mm and 3.29 mm, p<0.01, left elbow 4.28 mm and 3.38 mm, p<0.01). The lateral shifting of proximal ulna also increased in group I (right, avr. 0.73 mm and 1.43 mm, p<0.01, left, avr. 0.96 mm and 1.53 mm, p<0.05). The angular deformity were more prevalent in group I. Conclusion: The medial joint space widening and angular deformity was prevalent in male weight lifting athletes. the ultrasonographic examination was useful in evaluating the degree and incidence of the medial collateral ligament injuries.
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