ABSTRACT
Thread-embedding therapy has been widely applied for cosmetic purposes such as wrinkle reduction and skin tightening. Particularly, gold thread was reported to support connective tissue regeneration, but, its role in hair biology remains largely unknown due to lack of investigation. When we implanted gold thread and Happy Lift™ in human patient for facial lifting, we unexpectedly found an increase of hair regrowth in spite of no use of hair growth medications. When embedded into the depilated dorsal skin of mice, gold thread or polyglycolic acid (PGA) thread, similarly to 5% minoxidil, significantly increased the number of hair follicles on day 14 after implantation. And, hair re-growth promotion in the gold threadimplanted mice were significantly higher than that in PGA thread group on day 11 after depilation. In particular, the skin tissue of gold thread-implanted mice showed stronger PCNA staining and higher collagen density compared with control mice. These results indicate that gold thread implantation can be an effective way to promote hair re-growth although further confirmatory study is needed for more information on therapeutic mechanisms and long-term safety.
Subject(s)
Animals , Humans , Mice , Biology , Collagen , Connective Tissue , Hair Follicle , Hair Removal , Hair , Lifting , Minoxidil , Polyglycolic Acid , Proliferating Cell Nuclear Antigen , Regeneration , SkinABSTRACT
Human umbilical cord blood-derived mesenchymal stem cells (MSCs) are known to possess the potential for multiple differentiations abilities in vitro and in vivo. In canine system, studying stem cell therapy is important, but so far, stem cells from canine were not identified and characterized. In this study, we successfully isolated and characterized MSCs from the canine umbilical cord and its fetal blood. Canine MSCs (cMSCs) were grown in medium containing low glucose DMEM with 20% FBS. The cMSCs have stem cells expression patterns which are concerned with MSCs surface markers by fluorescence-activated cell sorter analysis. The cMSCs had multipotent abilities. In the neuronal differentiation study, the cMSCs expressed the neuronal markers glial fibrillary acidic protein (GFAP), neuronal class III beta tubulin (Tuj-1), neurofilament M (NF160) in the basal culture media. After neuronal differentiation, the cMSCs expressed the neuronal markers Nestin, GFAP, Tuj-1, microtubule-associated protein 2, NF160. In the osteogenic & chondrogenic differentiation studies, cMSCs were stained with alizarin red and toluidine blue staining, respectively. With osteogenic differentiation, the cMSCs presented osteoblastic differentiation genes by RT-PCR. This finding also suggests that cMSCs might have the ability to differentiate multipotentially. It was concluded that isolated MSCs from canine cord blood have multipotential differentiation abilities. Therefore, it is suggested that cMSCs may represent a be a good model system for stem cell biology and could be useful as a therapeutic modality for canine incurable or intractable diseases, including spinal cord injuries in future regenerative medicine studies.
Subject(s)
Animals , Cell Differentiation , Chondrogenesis , Dogs/blood , Fetal Blood/cytology , Mesenchymal Stem Cells/cytology , Neurons/cytology , OsteogenesisABSTRACT
Mesenchymal stem cells (MSCs) have the capabilities for self-renewal and differentiation into cells with the phenotypes of bone, cartilage, neurons and fat cells. These features of MSCs have attracted the attention of investigators for using MSCs for cell-based therapies to treat several human diseases. Because bone marrowderived cells, which are a main source of MSCs, are not always acceptable due to a significant drop in their cell number and proliferative/differentiation capacity with age, human umbilical cord blood (UCB) cells are good substitutes for BMCs due to the immaturity of newborn cells. Although the isolation of hematopoietic stem cells from UCB has been well established, the isolation and characterization of MSCs from UCB still need to be established and evaluated. In this study, we isolated and characterized MSCs. UCB-derived mononuclear cells, which gave rise to adherent cells, exhibited either an osteoclast or a mesenchymal-like phenotype. The attached cells with mesenchymal phenotypes displayed fibroblast-like morphologies, and they expressed mesenchymal-related antigens (SH2 and vimentin) and periodic acid Schiff activity. Also, UCB-derived MSCs were able to transdifferentiate into bone and 2 types of neuronal cells, in vitro. Therefore, it is suggested that the MSCs from UCB might be a good alternative to bone marrow cells for transplantation or cell therapy.
Subject(s)
Humans , Infant, Newborn , Acid Phosphatase/metabolism , Bone and Bones/cytology , Cell Differentiation/physiology , Cell Separation/methods , Fetal Blood/cytology , Immunohistochemistry , Immunophenotyping , Mesenchymal Stem Cells/cytology , Microscopy, Phase-Contrast , Neurons/cytology , Periodic Acid-Schiff ReactionABSTRACT
Five monoclonal antibodies (MAbs) and chicken immunoglobulin (IgY) were developed by immunizing with flagella purified from Listeria monocytogenes 4b and the five MAbs have been confirmed to be specific against three different epitopes of flagellin. The antibodies showed specific reaction to Listeria genus and no cross-reactivity with other bacteria tested in this experiment including E.coli O157:H7 and Salmonella enteritidis. Sandwich enzyme-linked immunosorbent assays (ELISA) using the MAbs and IgY were developed to detect Listeria species and the sensitivity and specificity of the developed ELISA have been analyzed. The detection limit of ELISA using MAb 2B1 and HRP labeled IgY was 1 x105cells/0.1 ml at 22degrees C and 1x106 cells/0.1 ml at 30degrees C. ELISA using the pair of MAbs (MAbs 2B1 and HRP labeled MAbs 7A3) detected up to 104cells/0.1 ml at 22degrees C and 30degrees C. Detection limit of sandwich ELISA using IgY was 10 times lower than MAb pair. Using the developed ELISA, we could detect several Listeria contaminated in food samples after 48 h-culturing. In conclusion, both MAbs and IgY have been proved to be highly specific to detect Listeria flagella and the developed sandwich ELISA using these antibodies would be useful tool for screening Listeria spp. in food.
Subject(s)
Animals , Antibodies, Bacterial/chemistry , Antibodies, Monoclonal , Antibody Specificity , Antigens, Bacterial/analysis , Enzyme-Linked Immunosorbent Assay/methods , Flagella/genetics , Food Microbiology , Immunoglobulins/analysis , Listeria/classification , Meat/microbiology , Milk/microbiology , Sensitivity and Specificity , SwineABSTRACT
PURPOSE: The diagnosis of Meckel's diverticulum is difficult and delayed because it presents with various clinical symptoms. We evaluated clinical, imaging and pathologic findings of Meckel's diverticulum to facilitate detection of Meckel's diverticulum in children. METHODS: Review of clinical, imaging, surgical and pathological findings in 10 children aged 7 days to 14 years with Meckel's diverticulum during an 8-year period, 1993-2001, at Ewha Womans University Hospital was undertaken. RESULTS: The male to female ratio was 2.3 : 1. The chief complaint was painless lower gastrointestinal(GI) bleeding; others were abdominal pain, abdominal distention and vomiting, in order of frequency. The diagonsis before surgery were Meckel's diverticulum in 5 patients, non-reducible intussusception in 3 patients and intestinal obstruction in 2 patients. The diverticulum was located between 35 cm to 70 cm proximal to the ileocecal valve. The length of the diverticulum ranged from 4 cm to 12 cm and 80% of it was within 5 cm. A Meckel scan(99mTc-pertechnetate scintigraphy) after cimetidine administration was done in 6 cases. All 5 cases that presented with lower GI bleeding had ectopic gastric mucosa confirmed on pathology. Out of 5 cases of ectopic gastric mucosa, only 4 cases were positive on the Meckel's scan. CONCLUSION: In cases of unexplained GI bleeding, obstruction, or inflammation diagnostic workup should be carried out to rule out Meckel's diverticulum. Laparoscopy, high resolution ultrasonography and computed tomography of the abdomen may be indicated in the assessment of pediatric patient with lower GI bleeding, especially in patients with suspected bleeding from Meckel's diverticulum showing negative Meckel's scan.
Subject(s)
Child , Female , Humans , Male , Abdomen , Abdominal Pain , Cimetidine , Diagnosis , Diverticulum , Gastric Mucosa , Hemorrhage , Ileocecal Valve , Inflammation , Intestinal Obstruction , Intussusception , Laparoscopy , Meckel Diverticulum , Pathology , Ultrasonography , VomitingABSTRACT
To evaluate the estrogenic activities of several chemicals such as 17 beta-estradiol (E2), rho-nonylphenol, bisphenol A, butylparaben, and combinations of these chemicals, we used recombinant yeasts containing the human estrogen receptor [Saccharomyces cerevisiae ER + LYS 8127]. We evaluated E2 was most active in the recombinant yeast assay, followed by rho-nonylphenol, bisphenol A, butylparaben. The combinations of some concentrations of 17-estradiol as a strong estrogen and bisphenol A or butylparaben as a weak estrogen showed additive estrogenic effects. Also, the combinations of some concentrations of nonlyphenol and butylparaben and combination of butylparaben and bisphenol A showed additive effects in the estrogenic activity. Therefore, the estrogenic activities of the combinations of two chemicals were additive, not synergistic.
Subject(s)
Humans , Cloning, Molecular , Estradiol/pharmacology , Estrogens/classification , Estrogens, Non-Steroidal/pharmacology , Kinetics , Parabens/pharmacology , Phenols/pharmacology , Receptors, Estrogen/drug effects , Recombinant Proteins/drug effects , Saccharomyces cerevisiae/geneticsABSTRACT
PURPOSE: Iron deficiency anemia (IDA) is the most common nutrient deficient disorder in infants and young children. Iron deficiency at this age group can cause serious effects on mental and psychomotor development. We analyzed the hematologic profiles of infants and young children with IDA, comparing them with control group. METHODS: The feeding practices and the iron batteries investigated in 198 anemic patients aged 5 to 36 months who had been brought to Inha General & University Hospital. Control group were 129 healthy infants and children who visited DongBu Municipal Hospital and the local health center for immunizations. They also had hemoglobin concentration (Hb), hematocrit, mean corpuscular volume (MCV), mean corpuscular hemoglobin and red cell distribution width (RDW) tested by the electron counters. Patients with hemoglobin level <11 g/dL who had serum ferritin <10 ng/mL or transferrin saturation <15% were classified as having IDA. RESULTS: Out of the 198 subjects (M:F=1.6:1) with IDA, 81.8% (n=162) was breast feeding more than 6 months. The main causes which they were brought to the clinic were infectious or inflammatory illness, and only 13.1% with IDA were visited for evaluation of pallor or anemia. Correlation between Hb and MCV was much more in IDA group than control group (r=0.709, r=0.368; P<0.001). CONCLUSION: By combining Hb with MCV and RDW as well as iron batteries in screening for iron deficiency and IDA, the accuracy of diagnosis can be increased. We support the use of appropriately iron-fortified formulas or weaning foods, or the routine iron supplement starting at 6 months of age in exclusively breast-fed infants to prevent the iron deficiency.
Subject(s)
Child , Humans , Infant , Anemia , Anemia, Iron-Deficiency , Breast Feeding , Diagnosis , Erythrocyte Indices , Erythrocytes , Ferritins , Hematocrit , Hospitals, Municipal , Immunization , Iron , Mass Screening , Pallor , Transferrin , WeaningABSTRACT
The effects of carnosine and related compounds (CRCs) including anserine, homocarnosine, histidine, and beta-alanine on monosaccharide autoxidation and H2O2 formation were investigated. The incubation of CRCs with D-glucose, D-glucosamine, and D, L-glyceraldehyde at 37degreeC increased the absorption maxima at 285 nm, 273 nm, and 290 ~ 330 nm, respectively. D, L-glyceraldehyde was the most reactive sugar with CRCs. The presence of copper strongly stimulated the reaction of carnosine and anserine with D-glucose or D-glucosamine. Carnosine and anserine stimulated H2O2 formation from D-glucose autoxidation in a dose-dependent manner in the presence of 10 muM Cu (II). The presence of human serum albumin (HSA) decreased their effect on H2O2 formation. Carnosine and anserine has a biphasic effect on alpha-ketoaldehyde formation from glucose autoxidation. CRCs inhibited glycation of HSA as determined by hydroxymethyl furfural, lysine residue with free epsilon-amino group, and fructosamine assay. These results suggest that CRCs may be protective against diabetic complications by reacting with sugars and protecting glycation of protein.