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1.
Transplant Proc ; 50(10): 3222-3227, 2018 Dec.
Article in English | MEDLINE | ID: mdl-30577189

ABSTRACT

PURPOSE: The use of expanded-criteria deceased-donor (ECD) kidneys must be evaluated within the objective perspective of critical organ shortage and graft function and survival. In this study, we aimed to compare the clinical outcomes of ECD reliance with concurrent use of ideal-criteria deceased donors (IDDs) and non-ECDs in adult renal transplantation. METHODS: Between February 2000 and December 2015, we analyzed 405 deceased-donor renal transplants, specifically 129 grafts (31.9%) from ECDs, 233 grafts (57.5%) from non-ECDs, and 43 grafts (10.6%) from IDDs. ECDs were classified according to the United Network for Organ Sharing guidelines, while an IDD was defined as a younger person (10-39 years of age) with no medical risk factors who died from a traumatic head injury. Donor and recipient risk factors were separately analyzed and correlated with recipient graft function, and survival was evaluated. RESULTS: ECDs were older (56.8 ± 6.3 years); showed increased incidence of hypertension, diabetes, and cerebrovascular brain death; and had a higher pre-retrieval serum creatinine level than the other groups. ECD kidney recipients were also older (50.6 ± 9.8 years), had a shorter waiting time (P = .031), and demonstrated a low frequency of re-transplantation (P = .028). Long-term renal function followed longitudinally was lower in ECD kidney recipients until five years after transplantation, while the glomerular filtration rate (GFR) level at 7 and 10 years did not differ significantly among the groups (P = .074 and .262, respectively). There were no significant differences in terms of graft survival (P = .394) or patient survival (P = .737) among the groups. CONCLUSIONS: Although the long-term renal function followed longitudinally was lower in ECD kidney recipients, the use of renal grafts from ECDs is an acceptable method to resolve the disparity of critical organ shortage. However, the classification of the high-risk group should be updated with consideration given to differences in regional characteristics.


Subject(s)
Kidney Transplantation/methods , Tissue Donors/classification , Tissue Donors/supply & distribution , Adolescent , Adult , Child , Female , Graft Survival , Humans , Kidney/physiopathology , Kidney Transplantation/mortality , Male , Middle Aged , Retrospective Studies , Risk Factors , Treatment Outcome , Young Adult
2.
J Vet Intern Med ; 31(6): 1827-1832, 2017 Nov.
Article in English | MEDLINE | ID: mdl-28892209

ABSTRACT

BACKGROUND: Mycophenolate mofetil (MMF), the prodrug of mycophenolic acid (MPA), is becoming increasingly popular as an alternative immunosuppressant in feline medicine. Pharmacokinetic information is not available for cats. OBJECTIVE: The purpose of this study was to determine whether MMF is biotransformed into the active metabolite MPA and to evaluate the disposition of MPA after a 2-hour constant rate intravenous (IV) infusion of MMF in healthy cats. ANIMALS: Healthy cats (n = 6). METHODS: This was a prospective pilot study. All cats were administered MMF at 20 mg/kg every 12 hours over a 2-hour constant rate infusion for 1 day. The concentrations of MPA and its derivatives in blood were determined using a validated UHPLC-UV method. RESULTS: All cats biotransformed MMF into MPA. The mean AUC0-14 h ranged from 6 to 50 h*mg/L after IV dosing of MMF. Transient large bowel diarrhea was recorded in 2 of 6 cats after medication administration. CONCLUSION AND CLINICAL IMPORTANCE: The disposition of MPA in plasma was highly variable, which could result in high interindividual variability in the safety and efficacy of treatment with MMF in cats.


Subject(s)
Immunosuppressive Agents/pharmacokinetics , Mycophenolic Acid/analogs & derivatives , Mycophenolic Acid/pharmacokinetics , Animals , Area Under Curve , Cats , Diarrhea/veterinary , Female , Immunosuppressive Agents/administration & dosage , Infusions, Intravenous/veterinary , Male , Mycophenolic Acid/administration & dosage , Pilot Projects , Prospective Studies
3.
Transplant Proc ; 49(5): 982-986, 2017 Jun.
Article in English | MEDLINE | ID: mdl-28583572

ABSTRACT

PURPOSE: Our objective was to investigate the effects of age on patient and graft survival in expanded criteria donor (ECD) renal transplantation. METHODS: Between February 2000 and December 2015, we analyzed 405 deceased donor renal transplants, including 128 grafts (31.9%) from ECDs. Based on recipient age and ECD criteria classification, the recipients were divided into four groups: Group I, non-ECD to recipient age <50 years; Group II, non-ECD to recipient age ≥50 years; Group III, ECD to recipient age <50 years; and Group IV, ECD to recipient age ≥50 years. RESULTS: Among the four groups, there were significant differences in baseline characteristics (age, body mass index [BMI], cause of end-stage renal disease [ESRD], number of kidney transplantations, and use of induction agent). The mean modification of diet in renal disease (MDRD) glomerular filtration rate (GFR) level at 1 month, 6 months, 1 year, 3 years, and 5 years after transplantation was significantly lower in patients with ECDs but MDRD GFR level at 7, 9, and 10 years did not differ significantly (P = .183, .041, and .388, respectively). There were no significant differences in graft survival (P = .400) and patient survival (P = .147). CONCLUSION: Our result shows that, regardless of recipient age, kidney transplants donated by deceased ECDs have similar graft and patient survival.


Subject(s)
Age Factors , Graft Survival , Kidney Transplantation/methods , Tissue Donors , Adult , Female , Humans , Kidney Failure, Chronic/surgery , Male , Middle Aged , Retrospective Studies , Treatment Outcome
4.
J Appl Microbiol ; 123(1): 54-65, 2017 Jul.
Article in English | MEDLINE | ID: mdl-28502107

ABSTRACT

AIMS: We evaluated the potential of a nanoparticle (NP) delivery system to improve methods of delivery of candidate peptide-based vaccines for Paratuberculosis in cattle. METHODS AND RESULTS: Peptides derived from Mycobacterium avium subsp. paratuberculosis (Map), and the pro-inflammatory monophosphoryl lipid A (MPLA) were incorporated in polymeric NPs based on poly (d,l-lactide-co-glycolide) (PLGA). The PLGA/MPLA NPs carriers were incubated with macrophages to examine their effects on survival and function. PLGA/MPLA NPs, with and without Map antigens, are efficiently phagocytized by macrophages with no evidence of toxicity. PLGA/MPLA NP formulations did not alter the level of expression of MHC I or II molecules. Expression of TNFα and IL12p40 was increased in Map-loaded NPs. T-cell proliferation studies using a model peptide from Anaplasma marginale demonstrated that a CD4 T-cell recall response could be elicited with macrophages pulsed with the peptide encapsulated in the PLGA/MPLA NP. CONCLUSIONS: These findings indicate PLGA/MPLA NPs can be used as a vehicle for delivery and testing of candidate peptide-based vaccines. SIGNIFICANCE AND IMPACT OF THE STUDY: These results will assist on more in depth studies on PLGA NP delivery systems that may lead to the development of a peptide-based vaccine for cattle.

5.
J Vet Pharmacol Ther ; 40(6): 618-628, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28387027

ABSTRACT

Acetylsalicylic acid (ASA, aspirin) is an antiplatelet medication used for prevention of thromboembolism. Effects of ASA appear to vary widely between dogs, but the underlying mechanisms are not understood. The Multiplate analyzer is a newer form of whole-blood impedance aggregometry recently validated for use in healthy dogs. A method utilizing this instrument to measure ASA effects on platelet function has not been established. The goals of this study were to establish reference ranges for the Multiplate in healthy dogs and secondly, to develop a technique to determine the in vitro concentration of ASA needed to cause 50% inhibition of platelet aggregation (IC50). Reference ranges established from 40 dogs at multiple test times for three agonists were consistent with previously published values. In vitro IC50 values were calculated using the sigmoid Emax model in 20 healthy dogs on two occasions to determine individual repeatability. Calculated in vitro IC50 demonstrated four ASA response groups: responder (n = 16), poor responder (n = 1), variable responder (n = 2), and nonresponder (n = 1). Multiplate within-assay variability was  <10% for area under the curve (AUC), and between-assay baseline AUC variability was  <15%. The described technique allowed for determination of an in vitro IC50 for ASA in dogs using a multiple electrode impedance aggregometer.


Subject(s)
Anti-Inflammatory Agents, Non-Steroidal/pharmacology , Aspirin/pharmacology , Blood Platelets/drug effects , Platelet Aggregation/drug effects , Animals , Anti-Inflammatory Agents, Non-Steroidal/administration & dosage , Aspirin/administration & dosage , Dogs , Dose-Response Relationship, Drug , Electric Impedance , Female , Male , Reference Values
6.
Transplant Proc ; 48(3): 770-2, 2016 Apr.
Article in English | MEDLINE | ID: mdl-27234732

ABSTRACT

BACKGROUND: Patients with high panel-reactive antibody (PRA) levels before transplantation tend to remain on the waiting list longer when considering cadaveric donor transplantation and have worse outcomes than those with lower PRA levels. This study investigated the impact of the pretransplantation PRA level on rejection and graft survival after kidney transplantation in patients with a negative crossmatch (CXM(-)) and no donor-specific antibody (DSA(-)). METHODS: We retrospectively analyzed 513 recipients of kidney allograft treated from January 2009 to April 2013. Those who tested positive on crossmatching, had donor-specific antibodies, were ABO incompatible, or had no PRA level data were excluded (n = 130). The remaining patients were stratified into 3 groups according to their PRA levels: group I, PRA = 0 (314 [80.1%]); group II, PRA ≤50% (27 [7.2%]); and group III, PRA >50% (27 [7.2%]). Graft failure was defined as a return to dialysis, transplant nephrectomy, or death with a functioning kidney. RESULTS: The mean patient follow-up was 30.4 ± 4.6 months. The rejection rate was 20.1% (group I, 18.5% [n = 58] vs group II, 23.8% [n = 10] vs group III, 33.3% [n = 9] [P = .053]). The graft failure rate was 21.7% (group I, 6.4% [n = 20] vs group II. 7.1% [n = 3] vs group III, 7.4% [n = 7] [P = .792]), and the 3-year graft survival rates were 96.3, 92.4, and 92.5%, respectively (P = .851). CONCLUSIONS: The pretransplant PRA level was not significantly associated with graft survival in patients with CXM(-) and DSA(-). However, the rejection rate tended toward significance as the PRA level increased (P = .053).


Subject(s)
Graft Rejection/immunology , Graft Survival/immunology , Histocompatibility Testing , Kidney Transplantation , Adult , Female , Humans , Male , Middle Aged , Retrospective Studies , Tissue Donors
7.
Transplant Proc ; 48(3): 933-7, 2016 Apr.
Article in English | MEDLINE | ID: mdl-27234771

ABSTRACT

BACKGROUND: Femoral motor neuropathy (FMN) induced after kidney transplantation (KT) can injure the patient and graft, and it sometimes can leave sequelae on gait. Nevertheless, the cause of FMN has not been determined. We assessed 5 cases of FMN in an attempt to determine the traits induced after KT. METHODS: Patient data about general characteristics, immunologic characteristics, operative findings, post-operative status, and FMN characteristics were assessed. A Bookwalter self-retaining retractor was used and quadruple immunosuppression was implemented in all cases. RESULTS: Five patients had FMN. Four of the 5 patients were women. The mean body mass index (BMI) was 20.38 ± 1.99 kg/m(2) prior to KT and 19.08 ± 1.98 kg/m(2) after KT. The mean graft-recipient weight ratio was 3.46 ± 0.99 g/kg. There was no case of psoas muscle abscess or hematoma. Motor function recovery was obtained 3 to 313 days after rehabilitation. Immediate graft function was favorable in all patients with no rejection or significant complications. CONCLUSIONS: FMN after KT may occur in patients with a lower BMI and higher graft-recipient weight ratio. This study was based on only 5 patients, and therefore further studies with a larger population size are necessary.


Subject(s)
Femoral Neuropathy/diagnosis , Femoral Neuropathy/etiology , Kidney Failure, Chronic/surgery , Kidney Transplantation/adverse effects , Adult , Body Mass Index , Cohort Studies , Female , Femoral Neuropathy/surgery , Humans , Kidney Failure, Chronic/complications , Kidney Failure, Chronic/pathology , Male , Middle Aged , Risk Factors
8.
Lett Appl Microbiol ; 60(5): 431-9, 2015 May.
Article in English | MEDLINE | ID: mdl-25631558

ABSTRACT

UNLABELLED: Preservative agents determining the shelf life of cosmetic products must have effective antimicrobial activity while meeting safety requirements for topical use. In this study, we determined the antimicrobial activity of 1,2-hexanediol against several Gram-positive and Gram-negative bacteria. Antimicrobial susceptibility tests have shown that 1,2-hexanediol exhibits broad-spectrum activity against Gram-positive and Gram-negative bacteria with MICs of 0·5-2% (v/v). The bactericidal concentration of 1,2-hexanediol was ranging from 1 to 2 × MIC as demonstrated by time-kill curve assay. A membrane depolarization assay showed that 1,2-hexanediol disrupted the cytoplasmic membrane potential. A checkerboard assay indicated that the effective concentration of 1,2-hexanediol was reduced up to 0·25-0·5 × MIC when combined with macelignan and octyl gallate against Gram-positive bacteria. However, this combination was not effective against Gram-negative bacteria. A turbidity reduction assay demonstrated that the combination of a high concentration of 1,2-hexanediol with food-grade antimicrobial compounds could trigger lytic activity towards Bacillus cereus cells. The remaining cell turbidity was 24·6 and 22·2% when 2% of 1,2-hexanediol was combined with 8 mg l(-1) octyl gallate or with 32 mg l(-1) macelignan respectively. This study showed that food-grade antimicrobial compounds may be used in combination with 1,2-hexanediol to increase its efficacy as a preservative agent in cosmetics. SIGNIFICANCE AND IMPACT OF THE STUDY: The antimicrobial activity of 1,2-hexanediol against Gram-positive and Gram-negative bacteria was potentiated with food-grade antimicrobials including xanthorrhizol, macelignan, panduratin A and octyl gallate, which have already been reported to display anti-inflammatory and other beneficial activities related to cosmetics. Therefore, the combination of 1,2-hexanediol and these food-grade antimicrobial agents would have benefits not only for increasing the antimicrobial activity but also in cosmetics use.


Subject(s)
Anti-Bacterial Agents/pharmacology , Food Preservatives/pharmacology , Glycols/pharmacology , Gram-Negative Bacteria/drug effects , Gram-Positive Bacteria/drug effects , Hexanes/pharmacology , Chalcones/pharmacology , Drug Synergism , Gallic Acid/analogs & derivatives , Gallic Acid/pharmacology , Lignans/pharmacology , Microbial Sensitivity Tests , Phenols/pharmacology
9.
Skin Res Technol ; 21(1): 1-8, 2015 Feb.
Article in English | MEDLINE | ID: mdl-24528115

ABSTRACT

BACKGROUND/PURPOSE: Age, gender, regional, and ethnic differences influence skin conditions. The purpose of this study was to observe the effects of environments, especially the air temperature, relative humidity, air pressure, duration of sunshine, and precipitation on skin, and the seasonal variation in skin hydration, sebum, scales, brightness, and elasticity in Korean females. METHODS: The study included 89 Korean subjects, aged 29.7 ± 6.2 years. The five skin biophysical parameters (skin hydration, sebum, scales, brightness, and elasticity) were measured at six sites: forehead, under the eye, frontal cheek, crow's foot, lateral cheek, and inner forearm. Skin hydration was measured using the Corneometer® CM 825. Skin sebum was measured with Sebumeter® SM 815. Skin scaliness was measured with Visioscan® VC 98. Skin brightness (L* value) was measured by using Spectrophotometer. A suction chamber device, Cutometer® MPA 580, was used to measure the skin elasticity. The measurements were performed every month for 13 months, from April 2007 to April 2008. RESULTS: There were significantly seasonal variations in environmental factors. The air temperature was the lowest in January (-1.7°C), and the highest in August (26.5°C). The relative humidity was the lowest in February (46%), and the highest in July and August (75%). There was a negative correlation between skin scaliness and three environmental factors such as air temperature, relative humidity, and highest precipitation. There was a positive correlation between skin scaliness and two environmental factors such as air pressure and duration of sunshine. Elasticity was correlated with air temperature positively and with air pressure negatively. CONCLUSION: The correlations shown between the skin biophysical parameters and environmental factors demonstrate that the skin biophysical parameters are affected by environmental factors.


Subject(s)
Acclimatization/physiology , Seasons , Sebum/metabolism , Skin Absorption/physiology , Skin Pigmentation/physiology , Water Loss, Insensible/physiology , Adult , Elastic Modulus/physiology , Female , Humans , Humidity , Korea , Pressure , Rain , Temperature , Young Adult
10.
J Dent Res ; 93(7): 685-90, 2014 Jul.
Article in English | MEDLINE | ID: mdl-24850617

ABSTRACT

Glechoma hederacea (GH), commonly known as ground-ivy or gill-over-the-ground, has been extensively used in folk remedies for relieving symptoms of inflammatory disorders. However, the molecular mechanisms underlying the therapeutic action of GH are poorly understood. Here, we demonstrate that GH constituents inhibit osteoclastogenesis by abrogating receptor activator of nuclear κ-B ligand (RANKL)-induced free cytosolic Ca(2+) ([Ca(2+)]i) oscillations. To evaluate the effect of GH on osteoclastogenesis, we assessed the formation of multi-nucleated cells (MNCs), enzymatic activity of tartrate-resistant acidic phosphatase (TRAP), expression of nuclear factor of activated T-cells cytoplasmic 1 (NFATc1), and [Ca(2+)]i alterations in response to treatment with GH ethanol extract (GHE) in primarily cultured bone marrow-derived macrophages (BMMs). Treatment of RANKL-stimulated or non-stimulated BMMs with GHE markedly suppressed MNC formation, TRAP activity, and NFATc1 expression in a dose-dependent manner. Additionally, GHE treatment induced a large transient elevation in [Ca(2+)]i while suppressing RANKL-induced [Ca(2+)]i oscillations, which are essential for NFATc1 activation. GHE-evoked increase in [Ca(2+)]i was dependent on extracellular Ca(2+) and was inhibited by 1,4-dihydropyridine (DHP), inhibitor of voltage-gated Ca(2+) channels (VGCCs), but was independent of store-operated Ca(2+) channels. Notably, after transient [Ca(2+)] elevation, treatment with GHE desensitized the VGCCs, resulting in an abrogation of RANKL-induced [Ca(2+)]i oscillations and MNC formation. These findings demonstrate that treatment of BMMs with GHE suppresses RANKL-mediated osteoclastogenesis by activating and then desensitizing DHP-sensitive VGCCs, suggesting potential applications of GH in the treatment of bone disorders, such as periodontitis, osteoporosis, and rheumatoid arthritis.


Subject(s)
Lamiaceae , Osteoclasts/drug effects , Plant Extracts/pharmacology , RANK Ligand/drug effects , Acid Phosphatase/drug effects , Animals , Bone Marrow Cells/drug effects , Calcium Channel Blockers/pharmacology , Calcium Channels/drug effects , Calcium Signaling/drug effects , Cell Differentiation/drug effects , Cells, Cultured , Cytosol/drug effects , Dihydropyridines/pharmacology , Dose-Response Relationship, Drug , Giant Cells/drug effects , Isoenzymes/drug effects , Macrophages/drug effects , Mice , Mice, Inbred C57BL , NFATC Transcription Factors/drug effects , Tartrate-Resistant Acid Phosphatase
11.
Transplant Proc ; 46(2): 431-6, 2014.
Article in English | MEDLINE | ID: mdl-24655981

ABSTRACT

Our objective was to compare the clinical outcomes of adult kidney transplants from expanded criteria deceased donors (ECD) with those from concurrent standard criteria deceased donors (SCD). Between January 2000 and December 2011, we transplanted 195 deceased donor renal transplants into adult recipients, including 31 grafts (15.9%) from ECDs and 164 grafts (84.1%) from SCDs. ECDs were classified using the United Network for Organ Sharing (UNOS) definitions. Donor and recipient risk factors were analyzed separately and their correlation with recipient graft function and survival was evaluated (minimum 6-month follow-up). ECDs were older (56.8 ± 6.3 years), showed an increased incidence of hypertension, diabetes, and cerebrovascular brain death, and had a higher preretrieval serum creatinine level than SCDs. ECD kidney recipients had a shorter waiting time (P = .019) but other baseline characteristics (age, gender, body mass index [BMI], cause of end-stage renal disease, type of renal replacement therapy, incidence of diabetes and hypertension, number of HLA antigen mismatches, positivity for panel-reactive antigen, and cold ischemic time) were not significantly different from those of SCD kidney recipients. Mean glomerular filtration rate (GFR) at 1 month, 6 months, 1 year, and 3 years after transplantation was significantly lower in recipients of ECD transplants than recipients of SCD transplants, but the GFR level at 5 and 10 years was not significantly different between ECD and SCD recipient groups (P = .134 and .702, respectively). Incidence of acute rejection episodes and surgical complications did not differ significantly between the 2 recipient groups, but the incidence of delayed graft function (DGF) and infectious complications was higher in ECD kidney recipients than SCD kidney recipients (P = .007 and P = .008, respectively). Actual patient and graft survival rates were similar between the 2 recipient groups with a mean follow-up of 43 months. There were no significant differences in graft survival (P = .111) or patient survival (P = .562) between the 2 groups. Although intermediate-term renal function followed longitudinally was better in SCD kidney recipients, graft and patient survival of ECD kidney recipients were comparable with those of SCD kidney recipients. In conclusion, use of renal grafts from ECDs is a feasible approach to address the critical organ shortage.


Subject(s)
Cadaver , Kidney Transplantation , Tissue Donors , Treatment Outcome , Female , Graft Survival , Humans , Kidney Transplantation/adverse effects , Male , Middle Aged , Retrospective Studies , Risk Factors , Surgical Wound Infection/complications , Survival Analysis
12.
Transplant Proc ; 46(2): 602-6, 2014.
Article in English | MEDLINE | ID: mdl-24656023

ABSTRACT

INTRODUCTION: The purpose of this study was to determine the natural history of arteriovenous (AV) access after successful kidney transplantation (KT) and to identify the risk factors of spontaneous access closure in kidney transplant recipients. METHODS: We performed a retrospective review of 115 patients who underwent KT with functioning access from June 2010 to July 2012. AV access patency was checked and recorded daily during the hospital stay and at every visit to the outpatient clinic. Patients were divided into 2 groups according to the patency of access, and risk factors of access thrombosis were assessed. Access patency was followed up until patency was lost or the study was closed. RESULTS: At the end of follow-up, 18 (15.7%) AV accesses had spontaneously closed. Mean time to closure was 119 ± 163 days, and 12 of 18 were closed within 90 days after KT. AV access spontaneously closed in 8.5% of male patients, compared with 27.3% of female patients (P = .007), 12.2% of cases with native access compared with 35.3% of cases with artificial access (P = .016), and 11.3% of cases with wrist access compared with 25.7% of cases with elbow access (P = .049). Spontaneously closed AV accesses tended to have a lower mean access flow compared with functioning accesses (P = .019). On multivariate analysis, female sex and AV access flow volume affected spontaneous AV access closure (odds ratio 4.749, 95% confidence interval 1.919-35.383, P = .008; odds ratio 0.998, 95% confidence interval 0.996-0.999, P = .010, respectively). CONCLUSIONS: Our results suggest that AV access thrombosis occurs more frequently during the early postoperative period, particularly in female patients or patients with low flow access, whereas it is a rare event in male patients or patients with high access flow, especially in the late postoperative period.


Subject(s)
Arteriovenous Shunt, Surgical , Kidney Transplantation , Thrombosis/epidemiology , Adult , Female , Humans , Male , Middle Aged , Retrospective Studies , Risk Factors
13.
Transplant Proc ; 45(9): 3203-8, 2013 Nov.
Article in English | MEDLINE | ID: mdl-24182785

ABSTRACT

BACKGROUND: Heat shock proteins (HSP) play an important role in protecting cells against stress. METHODS: Using a rat model, we tested the hypothesis that pretreatment with glutamine (Gln) and ischemia preconditioning (IPC) increase the expression of HSP resulting in attenuation of renal ischemia/reperfusion (I/R) injury. Sprague-Dawley rats were randomized into 4 groups [group I, Gln injection (+), IPC (+); group II, Gln injection (+), IPC (-); group III, saline injection (+), IPC (+); group IV, saline injection (+), IPC (-)]. Renal HSP70 expression was determined by Western blotting and kidney function was assessed by blood urea nitrogen and serum creatinine. Renal cross-sections were microscopically examined for tubular necrosis, exfoliation of tubular epithelial cells, cast formation, and monocyte infiltration. RESULTS: Gln pretreatment increased intrarenal HSP expression (P = .031). In group I, tubulointerstitial abnormalities were clearly slighter compared with the other groups (P < .001). CONCLUSION: Our experiments suggest that (1) a single dose of Gln could induce HSP expression and (2) IPC could relieve renal I/R injury. In addition, IPC combined with Gln pretreatment had a synergic protective effect against renal I/R injury.


Subject(s)
Glutamine/administration & dosage , Ischemic Preconditioning , Kidney/blood supply , Reperfusion Injury/prevention & control , Animals , Male , Rats , Rats, Sprague-Dawley
14.
Transplant Proc ; 45(8): 2925-30, 2013 Oct.
Article in English | MEDLINE | ID: mdl-24157005

ABSTRACT

Our objective was to evaluate the usefulness of three-dimensional (3-D) contrast-enhanced (CE) magnetic resonance angiography (MRA) to assess renal parenchyma, arterial inflow stenosis, and peritransplant fluid collections in the early period after kidney transplantation (KT). Between January 2010 and April 2011, we examined a consecutive series of 144 renal transplants using 3-D CE MRA at 14 days after KT. MRA showed parenchyma infarctions (n = 17, 11.8%), arterial inflow stenoses (n = 23, 16%), lymphoceles (n = 14, 9.7%), and hematomas (n = 6, 4.2%). The degree of renal transplant artery inflow stenosis was graded qualitatively based on diameter criterion; <50% = mild, 50% to 70% = moderate, and >70% = severe in 10 (6.9%), 5 (3.5%), and 8 (5.6%) subjects, respectively. The study recipients were divided into 3 groups according to the degree of renal artery inflow stenosis (group I: normal; group II: mild and moderate, <70%; group III: severe, >70%). Among group III patients who underwent digital subtraction angiography, 5 had percutaneous transluminal angioplasty or stenting performed after 1 month. Their mean resume creatinine levels at 1, 6, and 12 months after transplantation were not significantly different from those in the other groups (P = .391, .447, .110). The prevalence of graft loss (n = 2) was high in group III (P = .012), although the frequency of acute rejection episodes was not different among the groups (P = .890). The incidences of renal parenchyma infarction, peritransplant fluid collection and arterial inflow stenosis were unexpectedly high in the early period after KT. Thus, 3-D CE MRA provided a rapid global assessment of the renal parenchyma, transplant arterial system, and peritransplant fluid collection that can be helpful to detect or exclude many causes of renal transplant dysfunction.


Subject(s)
Contrast Media , Kidney Transplantation , Magnetic Resonance Angiography , Adult , Female , Graft Rejection , Humans , Male , Middle Aged
15.
Transplant Proc ; 45(8): 2931-6, 2013 Oct.
Article in English | MEDLINE | ID: mdl-24157006

ABSTRACT

INTRODUCTION: Serious organ shortages have necessitated the use of ABO-incompatible (ABOi) kidneys transplantation, which has been increasingly preformed in Korea. However there are few detailed comparative data regarding patient and graft survival, graft function, and complications in Korean patients receiving ABO-compatible (ABOc) and ABOi kidney transplants (KT). METHODS: This retrospective study compared 35 consecutive ABOi living donor KTs with 138 ABOc living donor KTs using same immunosuppressive regimens. We examined preoperative demographic factors, immunologic risk factors, patient and graft survivals, postoperative renal function, acute rejection episodes, infections, medical and surgical complications, duration of hospital stay as well as cause for readmission, and their rates. RESULTS: Patient survival, graft survival, and graft function over the 2 years after transplantation were similar between the 2 groups. There were no significant differences in terms of complications with exception of bleeding and BK virus infection. Acute antibody-mediated rejection episodes, bleeding complications, BK virus infections, and preoperative hospital stay were significantly greater in the ABOi group (P = .001, P = .002, P = .005, and P < .001 respectively). CONCLUSIONS: We concluded that, despite some disadvantages, ABOi KT is a viable, safe option for patients whose only available donor is blood group incompatible.


Subject(s)
ABO Blood-Group System , Histocompatibility Testing , Kidney Transplantation , Living Donors , Adult , Female , Graft Survival , Humans , Male , Middle Aged , Republic of Korea , Survival Analysis
16.
J Eur Acad Dermatol Venereol ; 27(12): 1521-6, 2013 Dec.
Article in English | MEDLINE | ID: mdl-23216687

ABSTRACT

BACKGROUND: Regional and ethnic (racial) differences in skin properties are well known. However, regional and racial studies are limited and have studied skin properties using an insufficient number of subjects and limited ethnic groups, except in the case of some recent studies. OBJECTIVE: The aim of this study was (1) to compare the skin biophysical parameter among the large scale of Southeast Asia females group and (2) to compare skin properties of the forehead and cheek. METHODS: We measured and compared seven skin biophysical parameters, such as skin hydration, sebum, skin pH, melanin index, erythema index, skin elasticity and transepidermal water loss (TEWL), of the forehead and cheek of a large population of Indonesian (n = 200), Vietnamese (n = 100) and Singaporean females (n = 97). RESULTS: At the point of site difference, there were significant differences in five biophysical parameters (skin hydration, skin pH, melanin index, erythema index and skin elasticity) in Indonesian females. In Vietnamese and Singaporean women, they were significant differences in five biophysical parameters (skin hydration, skin pH, melanin index, erythema index and TEWL). At the point of ethnic difference, the Indonesian women had the highest skin pH and melanin index between the different ethnic groups. Vietnamese women had the highest skin hydration and TEWL in the forehead, whereas Singaporean women had the highest skin elasticity. CONCLUSION: The skin biophysical parameters are different between the forehead and cheek among Southeast Asian females. It also reveals that the biophysical parameters are different in same racial group.


Subject(s)
Ethnicity , Face , Skin Physiological Phenomena , Adult , Asia, Southeastern , Biophysics , Female , Humans , Young Adult
17.
Phys Rev Lett ; 109(11): 112501, 2012 Sep 14.
Article in English | MEDLINE | ID: mdl-23005622

ABSTRACT

The ß decays of neutron-rich nuclei near the doubly magic (78)Ni were studied at the Holifield Radioactive Ion Beam Facility using an electromagnetic isobar separator. The half-lives of (82)Zn (228±10 ms), (83)Zn (117±20 ms), and (85)Ga (93±7 ms) were determined for the first time. These half-lives were found to be very different from the predictions of the global model used in astrophysical simulations. A new calculation was developed using the density functional model, which properly reproduced the new experimental values. The robustness of the new model in the (78)Ni region allowed us to extrapolate data for more neutron-rich isotopes. The revised analysis of the rapid neutron capture process in low entropy environments with our new set of measured and calculated half-lives shows a significant redistribution of predicted isobaric abundances strengthening the yield of A>140 nuclei.

18.
Transplant Proc ; 44(1): 276-80, 2012 Jan.
Article in English | MEDLINE | ID: mdl-22310632

ABSTRACT

This study evaluated the effect of the donor kidney to recipient body weight (Kw/Rw) ratio on long-term graft function and survival. We investigated retrospectively whether there was any association between Kw/Rw ratio and long-term graft survival and function after a follow-up of >10 years. We studied a consecutive series of 123 adult-to-adult living kidney transplants. According to the Kw/Rw ratio, patients were divided into 3 groups: "low" (Kw/Rw <2.85; n = 29), "medium" (2.85 ≤ Kw/Rw < 4.04; n = 63), and "high" (≥4.04; n = 31). Among the 3 groups, the mean serum creatinine levels at 1 and 6 months as well as 1 year after transplantation were significantly lower among patients with a high Kw/Rw ratio than in those with a medium or low ratio, but serum creatinine levels at 3 and 5 years did not differ significantly (P = .394 and 0.620, respectively). Graft survival rates at 5 and 10 years after transplantation were significantly lower in the "low" group. We observed a significant association between Kw/Rw ratio and graft survival (P = .018). The Kw/Rw ratio is an important factor for long-term graft survival and early graft function. However, it did not significantly affect subsequent renal function.


Subject(s)
Body Weight , Kidney Transplantation , Kidney/surgery , Living Donors , Adult , Biomarkers/blood , Creatinine/blood , Female , Graft Rejection/blood , Graft Rejection/immunology , Graft Rejection/prevention & control , Graft Survival/drug effects , Humans , Immunosuppressive Agents/therapeutic use , Kaplan-Meier Estimate , Kidney/anatomy & histology , Kidney Diseases/blood , Kidney Diseases/etiology , Kidney Transplantation/adverse effects , Kidney Transplantation/immunology , Logistic Models , Male , Middle Aged , Multivariate Analysis , Organ Size , Proportional Hazards Models , Registries , Republic of Korea , Retrospective Studies , Risk Assessment , Risk Factors , Time Factors , Treatment Outcome
19.
Transplant Proc ; 43(6): 2415-7, 2011.
Article in English | MEDLINE | ID: mdl-21839280

ABSTRACT

Ipsilateral acute iliofemoral deep vein thrombosis (DVT) immediately after kidney transplantation is rare but highly morbid, resulting in allograft failure, rupture, or even death. Treatment modalities for iliofemoral DVT occurring just after transplantation are limited due to bleeding risk and impaired renal function. A 55-year-old woman with end-stage renal disease from hypertension underwent a living nonrelated donor procedure using a kidney from her husband. On postoperative day 1, the patient presented edema and pain in the right lower extremity associated with local heat and redness. The symptoms became aggravated with time. Duplex ultrasonography (US) revealed a DVT involving from the right femoral vein to the common iliac vein and an increased resistive index of 0.96 to 0.97. A venogram using carbon dioxide as the contrast medium showed also same findings as the duplex US. After inferior vena cava filter insertion, percutaneous transluminal thromboaspiration (PTA) was performed with complete removal of the thrombus. Early PTA with carbon dioxide as intravenous contrast material seemed to be an effective and safe procedure to treat this complication.


Subject(s)
Femoral Vein , Iliac Vein , Kidney Failure, Chronic/surgery , Kidney Transplantation/adverse effects , Venous Thrombosis/therapy , Carbon Dioxide , Contrast Media , Endovascular Procedures , Female , Femoral Vein/diagnostic imaging , Humans , Iliac Vein/diagnostic imaging , Living Donors , Middle Aged , Phlebography , Suction , Time Factors , Treatment Outcome , Ultrasonography, Doppler, Duplex , Vena Cava Filters , Venous Thrombosis/diagnostic imaging , Venous Thrombosis/etiology
20.
Br J Pharmacol ; 164(2b): 794-806, 2011 Sep.
Article in English | MEDLINE | ID: mdl-21501144

ABSTRACT

BACKGROUND AND PURPOSE: NF-κB has been implicated as a therapeutic target for the treatment of rheumatoid arthritis. We previously synthesized a thiourea analogue, SPA0355, which suppressed NF-κB activity. Here we have assessed the anti-inflammatory and anti-arthritic effects of SPA0355. EXPERIMENTAL APPROACH: We evaluated the effects of SPA0355 on human rheumatoid fibroblast-like synoviocytes in vitro and on collagen-induced arthritis (CIA) in mice in vivo. KEY RESULTS: In vitro experiments demonstrated that SPA0355 suppressed chemokine production, matrix metalloproteinase secretion and cell proliferation induced by TNF-α in rheumatoid fibroblast-like synoviocytes. In addition, SPA0355 inhibited osteoclast differentiation induced by macrophage colony-stimulating factor and the receptor activator of NF-κB ligand, in bone marrow macrophages. Mice with CIA that were pretreated with SPA0355 had a lower cumulative disease incidence and severity of arthritis, based on hind paw thickness, radiological and histopathological findings, and inflammatory cytokine levels, than mice treated with vehicle. Mice treated with SPA0355, after the onset of CIA, also showed significantly decreased disease incidence and joint oedema. The in vitro and in vivo protective effects of SPA0355 were mediated by inhibition of the NF-κB signalling pathway. CONCLUSION AND IMPLICATIONS: Taken together, these results suggested that using SPA0355 to block the NF-κB pathway in rheumatoid joints reduced both the inflammatory responses and tissue destruction. Therefore, SPA0355 may have therapeutic value in preventing or delaying joint destruction in patients with rheumatoid arthritis.


Subject(s)
Arthritis, Experimental/drug therapy , Benzoxazines/pharmacology , Synovial Membrane/drug effects , Thiourea/analogs & derivatives , Animals , Anti-Inflammatory Agents/pharmacology , Arthritis, Experimental/metabolism , Arthritis, Experimental/pathology , Cell Proliferation/drug effects , Cells, Cultured , Chemokines/biosynthesis , Chemokines/metabolism , Cytokines/biosynthesis , Cytokines/metabolism , Edema/drug therapy , Edema/metabolism , Fibroblasts/drug effects , Fibroblasts/metabolism , Fibroblasts/pathology , Humans , Joints/drug effects , Joints/metabolism , Joints/pathology , Male , Matrix Metalloproteinases/biosynthesis , Matrix Metalloproteinases/metabolism , Mice , Mice, Inbred DBA , Mice, Inbred ICR , NF-kappa B/antagonists & inhibitors , NF-kappa B/metabolism , Osteoclasts/drug effects , Osteoclasts/metabolism , Osteoclasts/pathology , Signal Transduction/drug effects , Synovial Membrane/metabolism , Synovial Membrane/pathology , Thiourea/pharmacology , Tumor Necrosis Factor-alpha/metabolism
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