The present study attempted to demonstrate an acquired immunity against Clonorchis sinensis in albino rat. Three separate experiments were carried out to determine acquired resistance developed by stimulating procedure followed by challenging infection with metacercariae. Acquired resistance was evaluated by the rate of recovery or the average number of flukes recovered from the liver of challenged albino rats, compared with the controls. In drder to demonstrate the rate of recovery of the fluke, three experimental groups of rats were challenged with 50 metacercariae per rat- 7,15 and 30 days after single injection of worm extract. The recovery rate was ranged from 33.2% to 38.0% in experimental group and their control group harbored from 37.8% to 42.6%. No significant difference was found on statistical analysis. In experimental groups received two immunizing injections with worm extract followed by challenging infection of metacercariae. Statistically significant difference was recovered between experimentals and controls. It was noted that reduction of the recovery rate was prominent in Group 5 and 6, which were challenged 15 and 30 days after two stimulating injections. From the third experiment which was consisted of single immunizing infection with 20 metacercariae followed by challenging infection with 30 metacercariae, no significant reduction was found between experimental rats and their controls. The number of recovered worms ranged from 16.2 to 18.5 worms in experimental group, while that of control group ranged from 18.9 to 19.8 worms. The evidence of delayed hypersensitivity reaction was observed in the groups with acquired immunity developed rats, by histopathological study of host hepatic tissue.
parasitology-helminth-trematoda ; Clonorchis sinensis ; immunology ; rat ; histology

Allogenic peripheral blood stem cell transplantation could be used instead of allogenic bone marrow in treatment of leukemia in children. This 10-year-old female patient with high-risk acute lymphoblastic leukemia received a myeloablative regimen followed by allogenic peripheral blood stem cell transplantation from an HI A-identical sibling donor. Neutrophil recovery to greater than 500/pL occurred at day 11 and platelets recovered to greater than 20,000/pL at day 13. Allogenic peripheral blood stem cell transplantation can be performed safely and may result in a rapid neutrophil and platelet engraftment, without any apparent increased risk of acute graft versus host disease.
Blood Platelets ; Bone Marrow ; Child* ; Female ; Graft vs Host Disease ; Humans ; Leukemia ; Neutrophils ; Peripheral Blood Stem Cell Transplantation* ; Precursor Cell Lymphoblastic Leukemia-Lymphoma* ; Siblings ; Tissue Donors

OBJECTIVE: The resistance mechanisms of tumor cells to chemotherapeutic drugs are known as the followings; the alterations in the drug transport and activation, the enhanced expression of the DNA repair and replication and the decreased apoptosis. The aim of this study is to examine a relative difference on the level of the mRNA expression of the multidrug resistance (MDR)-related and the apoptosis-associated genes between cisplastin-sensitive and cisplatin-resistant human ovarian cancer cell line. METHODS: MDR-associated genes (lrp, mdr1/p-glycoprotein, mrp) and PKC isozymes (alpha, beta1, beta2, epsilon, eta, theta), DNA mismatch repair (MMR) genes (hMLH1, hMSH2, hMSH3, hMSH6), DNA topology-related genes (topoisomerase IIalpha and beta) and apoptosis-related genes (p53, p21, mdm2, fas (Apo-1), trail (Apo-2L) were analyzed in cisplatin-sensitive ovarian cancer cell line A2780 and -resistant cell line A2780cp by complementary DNA polymerase chain reaction. RESULTS: The mdr1 and PKC eta in mRNA level were expressed in A2780cp, but not in A2780. The mRNA expressions of lrp, p21 and mdm2 were more increased in A2780cp than drug sensitive variant A2780, but not significantly correlated. In contrast mRNA expression of hMLH1, a kind of DNA MMR gene, was remarkably decreased and mRNA expression of hMSH2 was slightly decrease in A2780cp. However, the levels of mrp, topo II alpha and beta, hMSH3, hMSH6, p53, fas and trail were not affected. CONCLUSION: These results showed that mdr1/p-gp expression may be an important determinant of MDR phenotype in resistant cell line to chemotherapeutic agents, and PKC isozymes and DNA MMR genes may be responsible for cisplatin resistant in ovarian cancer.
Apoptosis* ; Cell Line* ; Cisplatin* ; DNA ; DNA Mismatch Repair ; DNA Repair ; DNA, Complementary ; Drug Resistance, Multiple* ; Humans* ; Isoenzymes ; Ovarian Neoplasms* ; Phenotype ; Polymerase Chain Reaction ; RNA, Messenger

Neonatal Gaves disease is a relatively rare condition due to transplacental passage of Thyroid-stimulating antibody(TSAb) from a mother with active or inactive Graveses disease or autoimmune thyroiditis. A 11-day-old female newborn was referred to our department of pediatrics from a local clinic because of low level T4(3.55microg/dl) concurrent with high level TSH (501.74uIU/ml) on the 5th day neonatal metabolic screening. But, our repeated laboratory data showed very high serum T4(59.6microg/dl), T3(1,600ng/dl), suppressed TSH(0.43uIU/ml), and the presence of TSH receptor antibody. Her mother was treated with propylthiouracil(PTU) for Graves disease during pregnancy. Therefore, we thought it was a delayed-onset neonatal hyperthyroidism, because the fetal thyroid gland was initially suppressed by antithyroid drug taken during pregnancy. After initiating antithyroid drug therapy for the hyperthyroid nature, TSH levels became elevated again, while thyroid hormone levels decreased. Maternal and infant blood samples at the 23th day after birth were examined for serum autoantibodies directed towards the TSH receptor(Thyrotropin-binding inhibitory immunoglobulin:TBII, Thyroid-stimulating antibody:TSAb, Thyroid-stimulating blocking antibody:TSBAb) and high levels of TBII and TSAb were detected. About 2 months after birth, TBII and TSAb decreased within normal limit, and then we could stop antithyroid medication in safety. We report here a case of neonatal Graveses disease with very high level of T4 and T3, but firstly presented as hypothyroid nature on neonatal screening because of the maternally transferred antithyroid drug, PTU.
Autoantibodies ; Drug Therapy ; Female ; Graves Disease ; Humans ; Hyperthyroidism ; Infant ; Infant, Newborn ; Mass Screening ; Mothers ; Neonatal Screening ; Parturition ; Pediatrics ; Pregnancy ; Receptors, Thyrotropin ; Thyroid Gland ; Thyroiditis, Autoimmune

PURPOSE: The aim of this study was to evaluate the use of dehydrated human amnion/chorion membrane (dHACM) to repair perforated sinus membranes in rabbits. METHODS: Bilateral surgical windows (7.5-mm diameter) were prepared on the nasal bones of 14 rabbits. Standardized circular perforations (5-mm diameter) were made in the sinus membrane by manipulating implant twist drills. The perforated sinus membranes were repaired using dHACM or a resorbable collagen membrane (CM). The negative control (NC) group did not undergo perforated sinus membrane repair, while the positive control (PC) group underwent sinus augmentation without perforations. The same amount of deproteinized porcine bone mineral was grafted in all 4 groups. After 6 weeks, micro-computed tomography (micro-CT) and histomorphometric evaluations were conducted. RESULTS: The micro-CT analysis revealed that the total augmented volume was not significantly different among the groups. In the dHACM group, newly formed bone filled the augmented area with remaining biomaterials; however, non-ciliated flat epithelium and inflammatory cells were observed on the healed sinus membrane. Histometric analysis showed that the percentage of newly formed bone area in the dHACM group did not differ significantly from that in the CM group. The dHACM group showed a significantly higher percentage of newly formed bone area than the NC group, but there was no significant difference between the dHACM and PC groups. CONCLUSIONS: dHACM could be a feasible solution for repairing sinus membrane perforations that occur during sinus floor augmentation.
Amnion ; Biocompatible Materials ; Chorion ; Collagen ; Epithelium ; Humans ; Membranes ; Miners ; Nasal Bone ; Rabbits ; Sinus Floor Augmentation ; Transplants

BACKGROUND: Chimerism analysis is an important tool for assessing the origin of hematopoietic cells after allogeneic stem cell transplantation (allo-SCT) and can be used to detect impending graft rejection and the recurrence of underlying malignant or nonmalignant diseases. METHODS: This study included 24 patients who underwent myeloablative allo-SCT. DNA was extracted from nucleated cells (NCs), T cells, and natural killer (NK) cells, and the chimerism status of these cell fractions was determined by STR-PCR performed using an automated fluorescent DNA analyzer. RESULTS: Twenty-three out of the 24 patients achieved engraftment. Mixed chimerism (MC) in NCs, but not in T cells and NK cells, was significantly correlated with disease relapse. MC in all cell fractions was correlated with mortality. Ten patients (41.6%) developed extensive chronic GVHD. Six patients had MC in T cells, and 3 of them had chronic GVHD. Four patients with MC and relapse received donor lymphocyte infusion (DLI), and among them, 3 had secondary relapse. Further, the chimerism status differed among different cell lineages in 6 patients with myeloid malignancies. CONCLUSION: The implications of MC in lymphocyte subsets are an important area for future research. Chimerism analysis in lineage-specific cells permits detection of relapse and facilitates the monitoring of therapeutic interventions. These results can provide the basic data for chimerism analysis after myeloablative SCT.
Cell Lineage ; Chimerism ; DNA ; Graft Rejection ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells ; Humans ; Killer Cells, Natural ; Lymphocyte Subsets ; Lymphocytes ; Recurrence ; Stem Cell Transplantation ; T-Lymphocytes ; Tissue Donors

Objectives: This study aimed to investigate the nutritional status and dietary behavior of adolescents from North Korean refugee (NKR) families residing in South Korea (SK), who are known to be at a higher risk of malnutrition due to their lower socioeconomic status and facing other psychological challenges. Methods: A total of 178 adolescents (91 males and 87 females) from NKR families were included in the analysis, and their demographic details such as age, birthplace, parental nationality, and duration of their settlement in SK were collected through questionnaires. Anthropometric measurements were also taken to determine their growth and nutritional status according to the 2017 Korean National Growth Charts for children and adolescents. The study used the Nutrition Quotient for Korean Adolescents (NQ-A) questionnaire to assess the dietary behavior of the participants. Results: Approximately 11.8% and 10.1% of participants were identified with malnutrition and obesity, respectively. The total mean score for the NQ-A was 50.1. The mean scores for the individual factors of balance, diversity, moderation, environment, and practice were 49.2, 44.7, 43.8, 51.2, and 61.5, respectively. Approximately 47.2% of participants had a low NQA grade. However, there was no significant difference in the NQ-A scores according to their nutritional status or duration of time in SK. Conclusions Adolescents from NKR families exhibited both malnutrition and obesity.However, their dietary behavior, as assessed using the NQ-A, did not vary with their nutritional status. The unique challenges and related dietary behavior of North Korean adolescent refugees should be taken into consideration, when developing targeted strategies for nutritional education and health management programs.

Platelets contain various growth factors and cytokines. Platelet-derived bioproducts, such as platelet-rich plasma (PRP), platelet-rich fibrin (PRF), and platelet lysate (PL), have been developed and used in clinical practice. PRP and PRF are mainly derived from autologous blood and are used in orthopedics, ophthalmology, skin ulcer treatment, and oral surgery. PL is attracting attention as a substitute for fetal bovine serum in cultures for cell therapy. Research and development on platelet lysate production should be carried out, and transfusion medicine professionals must be involved in the clinical utilization of platelet-derived bioproducts.

Platelets contain various growth factors and cytokines. Platelet-derived bioproducts, such as platelet-rich plasma (PRP), platelet-rich fibrin (PRF), and platelet lysate (PL), have been developed and used in clinical practice. PRP and PRF are mainly derived from autologous blood and are used in orthopedics, ophthalmology, skin ulcer treatment, and oral surgery. PL is attracting attention as a substitute for fetal bovine serum in cultures for cell therapy. Research and development on platelet lysate production should be carried out, and transfusion medicine professionals must be involved in the clinical utilization of platelet-derived bioproducts.

Platelets contain various growth factors and cytokines. Platelet-derived bioproducts, such as platelet-rich plasma (PRP), platelet-rich fibrin (PRF), and platelet lysate (PL), have been developed and used in clinical practice. PRP and PRF are mainly derived from autologous blood and are used in orthopedics, ophthalmology, skin ulcer treatment, and oral surgery. PL is attracting attention as a substitute for fetal bovine serum in cultures for cell therapy. Research and development on platelet lysate production should be carried out, and transfusion medicine professionals must be involved in the clinical utilization of platelet-derived bioproducts.