No abstract available.
Mycobacterium tuberculosis* ; Mycobacterium* ; Polymorphism, Restriction Fragment Length*

No abstract available.
Colon*

The toxic action of benzene on erythropoiesis and myelopciesis, has been recognized since the early years of the present century. With the advance in high civilization and modern covenience, benzene as a kind of aromatic compound has been used for industrial solvent and its longstanding use has committed a public nuisance to be overcome by medical approach. Chromosomal breakage and rearrangement may be produced by radiation, radiomimetics, virus infection and various chemicals, especially, antibiotics and antitumor agent, causing chroimosomal rearrangement in vitro, whose teratogenic action in rats was previously demonstrated. Several works hsve been published on the chromosome damage as a consequence of benzene intoxication. Recently, it was shown by certain workers that individuals who had been exposed to atmospheric benzene, even without haematological disorders, might have an elevated percentage of structural chromosome aberrations in the lymphocytes cultured from their peripheral blood. Moreover, structural and numerical chromosome aberrations were demons trated in patients with blood disorders which were believed to be due to exposure to beuzene vapors. Accordingly, much interest has been paid to its cytologic effect on the hematopoietic tissues in man and experimental animals. A high incidence of chromosomal aberrations has also been found in rabbits exposed to benzene during a period of peripheral pancytopenia and after hematologic recovery. The significance of these findings was discussed in relation to leukemic transition and to their diagnostic value in human benzene intoxication. Chromosomal anomalies can also be induced by benzene given subcutaneously to rata. A pronounced individual variation of the degree of chromosome damage was shown. The purpose of this investigation was to determine whether benzene could a direct effect on the chromosome complement of mammalian bone marrow cells in vivo and whether characteristic banding patterns might be demonstrated in rat chomosomes by a modified trypsin-Giemsa method. Four-week old Sprague-Dawley strain rats of both sexes(each weighing about 50gm) were used for this experimental study. Three groups of animals were treated-with subcutaneous infections of pure benzene. Group I received benzene, 2.0ml per kg body weight, 24 hours before sacrifice; Group II, 48 and 24 hours and Group III, 72, 48 and 24 hours. A control group was given no treatment. The animais were sacrificed in ether anesthesia. Femur and iliac bone marrow cells were suspended in medium 199 within 30 minutes and transferred to warm Hanks-distilled water(1:3) for hypotonic treatment(10 minutes). A freshly prepared solution of methanol glacial acetic acid (3:1) was used as fixative. Finally, a few drops of the cell suspension were placed on moistened, pre-cleaned slides being dried by rapid-drying technique. The slides were stained with either simple Giemsa or trypsin Giemsa banding technique. From the data obtained, this report was summarized as follows: 1. For the benzene-treated groups, chromosomal aberration rate was 13.4% in group II and 38.6% in group III, while in the controls the rate was 6.4 percent. 2. Numerical aberrations included aneuploidy, polyploidy and monoploidy. The most frequent type was hypodiploidy (5.8–9.4%) in all the treated groups. 3. Structural aberrations could be divided in gaps, ring chromosomes, breaks, deletions, exchanges and dicentrics. Among those, the majority of abnormal metaphases was gaps; 2.4%, 2.2% and 10.8% in group I, II and III respectively, and 1. 6% in control group. 4. The translocations and dicentrics were not demonstated in group I and II. 5. The normal chromosome set of the Sprague-Dawley rat was comprised of 42 chromosomes: 20 pairs of autosomes, and one pair of sex chromosomes, xx or XY chromosomes. The total number of major bands in s chromosome complement was about 40 and minor bands, 13, 6. Sucessful demonstration of banding patterns was available by proper adjustment of the concentration, temperature and duration of trypsin solution.
Acetic Acid ; Anesthesia ; Aneuploidy ; Animals ; Anti-Bacterial Agents ; Benzene ; Body Weight ; Bone Marrow Cells ; Bone Marrow ; Chromosome Aberrations ; Chromosome Breakage ; Civilization ; Complement System Proteins ; Erythropoiesis ; Ether ; Femur ; Humans ; In Vitro Techniques ; Incidence ; Lymphocytes ; Methanol ; Methods ; Pancytopenia ; Polyploidy ; Rabbits ; Rats ; Rats, Sprague-Dawley ; Ring Chromosomes ; Sex Chromosomes ; Trypsin

The occurence of pseudarthroses associated with neurofibromatosis is a well documented phenomenon, with the majority of reported cases in the tibia but quite rare in forearm,Only ten cases in the English-literature and one case in Korean-literature of this lesion revealed appearing in the bones of the forearm till now. Of these, four in solitary pseudarthroses of the ulna(4.5.15), five in a solitary lesion of the radius(7.8.10.16.17), and only two cases was on the both bones of the forearm(9.14). We are presenting the case report of a Korean adult male with the clinical stigmata and a positive familial history of neurofibrormotosis who had congenital pseudarthroses of both the radius and ulna of the right forearm. Therefore, the present case is the third to be reported. We treated him with by production of an one-bone forearm using a dual a onlay bone graft positioned in neutral of supination and pronation. A stable, functional extremity with good union of pseudarthroses were encountered.
Adult ; Christianity ; Extremities ; Forearm ; Humans ; Inlays ; Male ; Neurofibromatoses ; Neurofibromatosis 1 ; Pronation ; Pseudarthrosis ; Radius ; Supination ; Tibia ; Transplants ; Ulna

No abstract available.
Colonoscopy* ; Humans ; Peritoneal Dialysis, Continuous Ambulatory* ; Peritonitis*

Hyperplasia*

Median raphe cyst is a relatively uncommon lesion occurring in the midline male perineum, especially ventral aspect of penis. It is an embryologic developmental anomaliy of the male genitalia. Histologically, the lining cells are usually pseudostratified columnar epithelium, but can be stratified squamous epithelium and sometimes mucous glands and ciliated cells can be observed within the cyst wall. Herein, we report a case of median raphe cyst in the midline of the scrotum of a 2-year-old boy.
Child, Preschool ; Epithelium ; Genitalia, Male ; Humans ; Male ; Penis ; Perineum ; Scrotum

Median raphe cyst is a relatively uncommon lesion occurring in the midline male perineum, especially ventral aspect of penis. It is an embryologic developmental anomaliy of the male genitalia. Histologically, the lining cells are usually pseudostratified columnar epithelium, but can be stratified squamous epithelium and sometimes mucous glands and ciliated cells can be observed within the cyst wall. Herein, we report a case of median raphe cyst in the midline of the scrotum of a 2-year-old boy.
Child, Preschool ; Epithelium ; Genitalia, Male ; Humans ; Male ; Penis ; Perineum ; Scrotum

No abstract available.
Keratins*

No abstract available.
DNA* ; Humans* ; Papilloma* ; Respiratory System*