Probiotics have many effects such as antihypertensive, prevention of cancer, antioxidation, reduction of dermatitis symptoms, improvement of mineral absorption, reduction of allergic symptoms, and decrease of cholesterol, However, the main role of probiotics is that they balance intestinal microbials proportion. L. acidophilus is one of probiotics and microflora in intestine. It has an acidification activity, aroma production, texture formation and probiotics properties. We studied on the roles of L. acidophilus in mice. In this study, body weights of mice were decreased when administration of L. acidophilus (1×10 10 CFU) and swimming ability has been raised than a normal group after feeding on L. acidophilus (1×10 10 CFU). After taking L. acidophilus (1×10 10 CFU), total white cells were increased than a normal group; hemoglobin and thrombocytes were increased. The level of cholesterol and triglyceride were decreased in blood analysis. We knew L. acidophilus is related to innate immune system. We found out the secretion of cationic peptide was increased in the Lysoplate assays as a result of L. acidophilus (1×10 10 CFU) administration. Appearance rate of lysozyme was also increased than the normal group on an immunohistochemistry stain. We confirmed L. acidophilus contributes to host health through innate immune system stimulation. L. acidophilus more than 1×10 10 CFU are thought to be beneficial for the host health and prevention of intestinal diseases in field condition.
Many chemical disinfectants are using to protect the foot and mouth disease (FMD) and avian influenza (AI) in Korea since 2000. This study was performed to confirm disinfective ability of commercialized chemical disinfectants and to investigate the sterilizing ability of E-ball as alterative to chemical disinfectants. 4 kinds of acidulant, 3 kinds of aldehyde, 1 kind of oxidizer and 300 g of E-ball were used in this study. Dilution rate of disinfective power of all chemical disinfectants were to 200 times. The sterilizing ability of aldehydes were better than the acidulant and oxidizer with Salmonella typhimurium. The sterilizing ability of E-ball treated solution was guessed due to the friction of E-ball deads. In the case of the friction of 2 beads of E-ball, Salmonella typhimurium was sterilizted on 1×10 6 /mL CFU in the E-ball treated solution. The E-ball treated solution had superior sterizing power compared with the chemical disinfectants in the bacteria of soil for antibacterial examination. E-ball treated solution has a possibility as the substitute of chemical disinfectants to protective the animal diseases contains FMD, AI.
The dried root of Angelica gigas (A. gigas) has been traditionally used as an oriental medicine, which is known to improve blood circulation and blood stasis. In the present study, leaves and stalks of A. gigas were used to investigate their effects on the innate immunity. The extracts were prepared from leaves and stalks of A. gigas and were fed to mice. The numbers of blood cells, total WBCs, neutrophils, lymphocytes, eosinophils and basophils were increased by 50% in mice fed with leaves extract of A. gigas compared to control mice. However, the numbers of blood cells were decreased when treated with stalks extract of A. gigas. The level of cholesterol and triglyceride in serum was markedly reduced in both mice group fed with leaves extract and stalks extract of A. gigas compared to control group (P<0.01). There was no significant change in the level of albumin, total protein, phosphate and calcium in serum. Activity of cationic peptide was found to be diffused in the testicles of mice fed with leaves extract of A. gigas compared to control group, which might be due to increased lysozyme in testicle. The lysoplate assay and immunohistochemistry assay suggest that the extract of leaves and stalks of A. gigas are immunogenic, but the effects might be related with acquired immune response rather than innate immunity.
Two cases of sudden death without clinical signs in a four-month-old female Hanwoo (Bos taurus coreanae) and sixteen-month-old female Holstein (Bos taurus taurus) were investigated. Severe pneumonia and septicemia were found on postmortem examination. Petechial and ecchymotic hemorrhages were present in the subcutaneous tissues of the neck region. The lungs remained expanded without collapsing, and the mediastinal lymph nodes were enlarged. A significant number of hemorrhagic bubbles were present in the tracheal lumen. On histopathology, the alveolar blood vessels were moderately congested, and inflammatory cells and multinucleated syncytial cells were found in the alveolar space. The pathogen isolated from the lesion was identified as Bibersteinia trehalosi using MALDI-TOF and 16S rRNA gene and sodA gene sequence analyses. To the best of our knowledge, this is the first report of B. trehalosi infection in cattle in Korea.
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