No abstract available.

Rhabdomyolysis is a complex medical condition in which insufficient energy supply to muscles results in the destruction of skeletal muscle and leakage of toxic intracellular substances into the systemic circulation. The common cause of rhabdomyolysis is a direct traumatic injury; however, it can also occur due to non-traumatic factors, including infection, toxins, and drugs. Rhabdomyolysis as an adverse effect of antipsychotic medication is not well understood. Peripheral neuropathy is a rare complication of rhabdomyolysis. Here, we present a case of a 22-year-old woman who presented to the emergency department with right thigh pain following an antipsychotic drug overdose and 3 days of loss of consciousness. There was no history of trauma to her leg. Physical examination, diagnostic testing, and imaging indicated a diagnosis of rhabdomyolysis and peripheral neuropathy. The patient underwent an incision with drainage, a muscle biopsy, and was treated with hydration, after which her condition improved, and she was discharged. Follow-up testing indicated lasting nerve injury. Peripheral neuropathy can occur even in patients with rhabdomyolysis without compartment syndrome. Awareness of this rare complication may help in initiating early interventions to minimize irreversible sequelae.

In order to determine the contamination status of contact lens care system by Acanthamoeba, a nation-wide survey was carried out for the detection of amoeba from the storage cases and contact lenses solution of 739 asymptomatic lens wearers (238 male and 501 female). Subjects consisted of 280 residents in Youngnam, 270 in Honam, and 189 in Chungbu provinces. Acanthamoeba was demonstrated from 141 (19.1%) lens care systems. No significant difference of contamination status was observed between male (19.7%) and female (18.8). However, the contamination rate from Honam province (28.1%) were significnatly higher than those from Youngnam (16.1%) and Chungbu (10.6%) provinces. The isolation rate for Acanth-amoeba was higher in systems of daily wear soft lens (20.0%), extended wear soft lens (23.1), and hard lens (18.8%) than in system of disposable lens. The contamination rate was the higher in the sysems using chemical disinfection alone (19.8%) for disinfection. The contamination rate in systems of combined disinfection with chemicals and intermittent boiling ranged 7.0% to 8.3%, and it was different according to the boiling frequency a week. More attention should be paid to hygeneic maintenance of contact lens care system for the prevention of contact lens-related Acanthamoeba keratitis.
Acanthamoeba Keratitis ; Acanthamoeba* ; Amoeba ; Contact Lenses ; Disinfection ; Female ; Humans ; Korea* ; Male

To determine the frequencies of the genotypes of NAT2 gene in healthy Korean populations and to identify the high-risk genotypes of NAT2 gene in colorectal cancer patients, 115 healthy controls and 109 cancer patients were analyzed using polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP). The distribution of NAT2 polymorphism in healthy Korean was found to be 7.8% of S/S genotype, 48.7% of S/F genotype, and 43.5% of F/F genotype. And the frequency of phenotypes was 8% of slow acetylator and 92% of rapid acetylator. S/S genotype of colorectal cancer patients was slightly more frequent than that of healthy controls(11.9% vs 7.8%). The relative risk of S/S genotype to colorectal cancer was estimated to be 1.41, taking the risk of F/F genotype as a baseline(1.00). These results suggest that the distribution of frequencies of NAT2 genotypes is very unique in Korean characterized by extremely low frequency of slow acetylator geno type(S/S) in comparison to the other ethnic groups. And the slow acetylator genotype(S/S) in Korean was found to be more susceptible to colon cancer. Therefore, S/S genotype may have a certain role an colonic carcinogenesis in Korean.
Carcinogenesis ; Colon ; Colonic Neoplasms ; Colorectal Neoplasms* ; Ethnic Groups ; Genetic Predisposition to Disease* ; Genotype ; Humans ; Korea* ; Phenotype

Background: Acellular dermal matrix (ADM) is widely used for prosthetic breast reconstruction. Although many studies have investigated the efficacy and complications of ADM in prosthetic breast reconstruction, studies on drainage and seroma formation according to the size of ADM manufactured using the same process are lacking. This study analyzed drainage and seroma formation according to the size of sterile ADM. Methods: From January 2011 to June 2018, the authors retrospectively reviewed the medical charts of patients who underwent direct-to-implant breast reconstruction using MegaDerm at a single institution. The ADMs used were classified as small or large groups. The two groups were compared in terms of the volume and duration time of two closed-suction drains (supramuscular and submuscular drains). Seroma and infection risk were also analyzed. Results: Of 344 patients, 69 were included. Among them, 22 patients were in the small-ADM group and 47 patients were in the large-ADM group. The supramuscular drain volume (P=0.295) and time (P=0.365) were not significantly different between the two groups. However, the submuscular (P=0.001) and total drain volume (P=0.004) were higher in the large-ADM group. In addition, seroma occurred significantly more frequently in the large-ADM group (P=0.048), but there was no significant difference in minor infections (P=0.088). Conclusions The size of sterile ADM affected drainage and seroma formation, with a larger size increasing drain volume and seroma risk. This study could provide a clinical basis for the safe usage of large sterile ADM.

Purpose: This study aims to investigate the effects of provisional restoration fabrication methods and surface polishing on surface roughness and microbial adhesion through in vitro experiments. Materials and Methods: 120 cylindrical provisional restorationresin blocks (10 × 10 × 2.5 mm) were manufactured according to four fabrication methods, and 30 specimens were assigned toeach group. Afterwards, they were divided into non-polishing group, #400 grit SiC polishing group, and #800 grit SiC polishinggroup and polished to a 10 × 10 × 2 mm specimen size (n = 10). The surface roughness Ra and Ry of the specimen was measuredusing a Surface Roughness Tester. Three specimens were extracted from each group and were coated with artificial saliva, and then Streptococcus mutans were cultured on the specimens at 37°C for 4 hours. The cultured specimens were fixed to fixativesand photographed using a scanning electron microscope. For statistical analysis, the two way of ANOVA was performed for surfaceroughness Ra and Ry, respectively, and the surface roughness was tested post-mortem with a Scheffe test. Results: The fabrication method and the degree of surface polishing of the provisional restorations had a significant effect on both surface roughness Ra and Ry, and had an interaction effect. There was no significant difference in Ra and Ry values in all polishing groups in DLP and LCD groups. Conclusion The fabrication method and surface polishing of the provisional restoration had a significant effect on surface roughness and showed different adhesion patterns for S. mutans adhesion.

Purpose: This study aims to investigate the effects of provisional restoration fabrication methods and surface polishing on surface roughness and microbial adhesion through in vitro experiments. Materials and Methods: 120 cylindrical provisional restorationresin blocks (10 × 10 × 2.5 mm) were manufactured according to four fabrication methods, and 30 specimens were assigned toeach group. Afterwards, they were divided into non-polishing group, #400 grit SiC polishing group, and #800 grit SiC polishinggroup and polished to a 10 × 10 × 2 mm specimen size (n = 10). The surface roughness Ra and Ry of the specimen was measuredusing a Surface Roughness Tester. Three specimens were extracted from each group and were coated with artificial saliva, and then Streptococcus mutans were cultured on the specimens at 37°C for 4 hours. The cultured specimens were fixed to fixativesand photographed using a scanning electron microscope. For statistical analysis, the two way of ANOVA was performed for surfaceroughness Ra and Ry, respectively, and the surface roughness was tested post-mortem with a Scheffe test. Results: The fabrication method and the degree of surface polishing of the provisional restorations had a significant effect on both surface roughness Ra and Ry, and had an interaction effect. There was no significant difference in Ra and Ry values in all polishing groups in DLP and LCD groups. Conclusion The fabrication method and surface polishing of the provisional restoration had a significant effect on surface roughness and showed different adhesion patterns for S. mutans adhesion.

Purpose: This study aims to investigate the effects of provisional restoration fabrication methods and surface polishing on surface roughness and microbial adhesion through in vitro experiments. Materials and Methods: 120 cylindrical provisional restorationresin blocks (10 × 10 × 2.5 mm) were manufactured according to four fabrication methods, and 30 specimens were assigned toeach group. Afterwards, they were divided into non-polishing group, #400 grit SiC polishing group, and #800 grit SiC polishinggroup and polished to a 10 × 10 × 2 mm specimen size (n = 10). The surface roughness Ra and Ry of the specimen was measuredusing a Surface Roughness Tester. Three specimens were extracted from each group and were coated with artificial saliva, and then Streptococcus mutans were cultured on the specimens at 37°C for 4 hours. The cultured specimens were fixed to fixativesand photographed using a scanning electron microscope. For statistical analysis, the two way of ANOVA was performed for surfaceroughness Ra and Ry, respectively, and the surface roughness was tested post-mortem with a Scheffe test. Results: The fabrication method and the degree of surface polishing of the provisional restorations had a significant effect on both surface roughness Ra and Ry, and had an interaction effect. There was no significant difference in Ra and Ry values in all polishing groups in DLP and LCD groups. Conclusion The fabrication method and surface polishing of the provisional restoration had a significant effect on surface roughness and showed different adhesion patterns for S. mutans adhesion.

Transmission electron microscopy of an Acanthamoeba isolate (KA/L5) from a contact lens case revealed bacterial endosymbionts within cytoplasm of the amoebae. The Acanthamoeba isolate belonged to the morphological group II. Based on the polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) of 18S ribosomal RNA coding DNA (rDNA), the isolate was identified as A. lugdunensis. Strain typing by isoenzyme analysis using isoelectric focusing (IEF) and mitochondrial (Mt) DNA RFLP revealed that the isolate was closely related with KA/L1, the most predominant type of isolates from contact lens storage cases, KA/E2, a clinical isolate, KA/W4, previously reported to host endosymbionts, and L3a strains of A. lugdunensis. The endosymbionts were similar to those of KA/W4 in aspects that they were randomly distributed in both trophozoites and cysts, and were rod-shaped bacteria measuring approximately 1.38 x 0.50 microns. But the number of endosymbionts per amoeba was significantly lower than that of KA/W4. They were neither limited by phagosomal membranes nor included in lacunaelike structure.
Acanthamoeba/microbiology* ; Acanthamoeba/cytology ; Animal ; Bacteria/isolation & purification* ; Colony Count, Microbial ; Contact Lenses* ; Cytoplasm/microbiology ; Symbiosis*

Productivity analysis of physician is one of essential factors for the optimal health manpower planning. Among 690 physicians operating clinic and registered on the Kyeongsangnamdo Medical Association, 623 physicians were studied with a structural questionnaire from April 1 to May 31, 1990. This study covers the general characteristics and productivity of physicians and attempts to find relevant determinants of their productivity through stepwise multiple regression analysis based on collected data. The major results were as follows. First, physicians were more prevalent 35~44 group (38.2%) in age, male (95.8%) in sex, specialist (76.5%) in specialization, city (78.0%) in geographical location. Age group of 35-54 and specialist were more prevalent in cities than in counties, while age group of 25-44 and 55 over and general practitioner in counties (p<0.001). Second, daily outpatient load of all physician were 77.1 persons on average. Age group of 35~44 had the most outpatient load (90.3 persons) among all age group, 6~10 years group (94.2 persons) in years of duration of practice, 11 hours per day group (83.4 persons) in working hours per day. Specialists had more outpatient load (82.6 persons) than general practitioners (61.1 persons) and physicians in cities had more (80.2 persons) than physicians in counties (66.3 persons). Daily average outpatient load of physicians were significantly different by their age, speciality, number of assistants and years of practice (p<0.001) and working location (p<0.05), but not significantly different by working hours per day of physician (p>0.1). Third, the productivity of physicians operating clinic were significantly affected by the three factorsnumber of assistants of physician, age of physician and duration of practice at the current clinic. Age of physician had negative regression coefficient.
Efficiency* ; General Practitioners ; Health Manpower ; Humans ; Male ; Outpatients ; Surveys and Questionnaires ; Specialization