1.Seroprevalence of three influenza A viruses (H1N1, H3N2, and H3N8) in pet dogs presented to a veterinary hospital in Ohio.
Hyesun JANG ; Yasmine K. JACKSON ; Joshua B. DANIELS ; Ahmed ALI ; Kyung il KANG ; Mohamed ELAISH ; Chang Won LEE
Journal of Veterinary Science 2017;18(S1):291-298
The prevalence of canine H3N8 influenza and human H1N1 and H3N2 influenza in dogs in Ohio was estimated by conducting serologic tests on 1,082 canine serum samples. In addition, risk factors, such as health status and age were examined. The prevalences of human H1N1, H3N2, and canine H3N8 influenzas were 4.0%, 2.4%, and 2.3%, respectively. Two samples were seropositive for two subtypes (H1N1 and H3N2; H1N1 and canine influenza virus [CIV] H3N8). Compared to healthy dogs, dogs with respiratory signs were 5.795 times more likely to be seropositive against H1N1 virus (p = 0.042). The prevalence of human flu infection increased with dog age and varied by serum collection month. The commercial enzyme-linked immunosorbent assay used in this study did not detect nucleoprotein-specific antibodies from many hemagglutination inhibition positive sera, which indicates a need for the development and validation of rapid tests for influenza screening in canine populations. In summary, we observed low exposure of dogs to CIV and human influenza viruses in Ohio but identified potential risk factors for consideration in future investigations. Our findings support the need for establishment of reliable diagnostic standards for serologic detection of influenza infection in canine species.
Animals
;
Antibodies
;
Cross-Sectional Studies
;
Dogs*
;
Enzyme-Linked Immunosorbent Assay
;
Hemagglutination
;
Hospitals, Animal*
;
Humans
;
Influenza A virus*
;
Influenza A Virus, H1N1 Subtype
;
Influenza, Human*
;
Mass Screening
;
Ohio*
;
Orthomyxoviridae
;
Prevalence
;
Risk Factors
;
Seroepidemiologic Studies*
;
Serologic Tests
2.A phosphorylation pattern-recognizing antibody specifically reacts to RNA polymerase II bound to exons.
Jungwon HAN ; Jong Hyuk LEE ; Sunyoung PARK ; Soomin YOON ; Aerin YOON ; Do B HWANG ; Hwa K LEE ; Min S KIM ; Yujean LEE ; Won J YANG ; Hong Duk YOUN ; Hyori KIM ; Junho CHUNG
Experimental & Molecular Medicine 2016;48(11):e271-
The C-terminal domain of RNA polymerase II is an unusual series of repeated residues appended to the C-terminus of the largest subunit and serves as a flexible binding scaffold for numerous nuclear factors. The binding of these factors is determined by the phosphorylation patterns on the repeats in the domain. In this study, we generated a synthetic antibody library by replacing the third heavy chain complementarity-determining region of an anti-HER2 (human epidermal growth factor receptor 2) antibody (trastuzumab) with artificial sequences of 7–18 amino-acid residues. From this library, antibodies were selected that were specific to serine phosphopeptides that represent typical phosphorylation patterns on the functional unit (YSPTSPS)₂ of the RNA polymerase II C-terminal domain (CTD). Antibody clones pCTD-1stS2 and pCTD-2ndS2 showed specificity for peptides with phosphoserine at the second residues of the first or second heptamer repeat, respectively. Additional clones specifically reacted to peptides with phosphoserine at the fifth serine of the first repeat (pCTD-1stS5), the seventh residue of the first repeat and fifth residue of the second repeat (pCTD-S7S5) or the seventh residue of either the first or second repeat (pCTD-S7). All of these antibody clones successfully reacted to RNA polymerase II in immunoblot analysis. Interestingly, pCTD-2ndS2 precipitated predominately RNA polymerase II from the exonic regions of genes in genome-wide chromatin immunoprecipitation sequencing analysis, which suggests that the phosphoserine at the second residue of the second repeat of the functional unit (YSPTSPS)2 is a mediator of exon definition.
Antibodies
;
Chromatin Immunoprecipitation
;
Clone Cells
;
Complementarity Determining Regions
;
DNA-Directed RNA Polymerases*
;
Exons*
;
Peptides
;
Phosphopeptides
;
Phosphorylation*
;
Phosphoserine
;
Receptor, Epidermal Growth Factor
;
RNA Polymerase II*
;
RNA*
;
Sensitivity and Specificity
;
Serine
3.Prevalence of Chronic Kidney Disease in Adults with Type 2 Diabetes Mellitus.
Serena K M LOW ; Chee Fang SUM ; Lee Ying YEOH ; Subramaniam TAVINTHARAN ; Xiao Wei NG ; Simon B M LEE ; Wern E E TANG ; Su Chi LIM
Annals of the Academy of Medicine, Singapore 2015;44(5):164-171
<b>INTRODUCTIONb>Diabetes mellitus (DM) is a major cause of chronic kidney disease (CKD). The epidemiology of CKD secondary to type 2 DM (T2DM) (i.e. diabetic nephropathy (DN)) has not been well studied in Singapore, a multi-ethnic Asian population. We aimed to determine the prevalence of CKD in adult patients with T2DM.
<b>MATERIALS AND METHODSb>We conducted a cross-sectional study on patients (n = 1861) aged 21 to 89 years with T2DM who had attended the DM centre of a single acute care public hospital or a primary care polyclinic between August 2011 and November 2013. Demographic and clinical data were obtained from patients using a standard questionnaire. Spot urine and fasting blood samples were sent to an accredited hospital laboratory for urinary albumin, serum creatinine, HbA1c and lipid measurement. CKD was defined and classified using the 2012 Kidney Disease: Improving Global Outcomes (KDIGO) guidelines and classification.
<b>RESULTSb>The distribution by risk of adverse CKD outcomes was: low risk, 47%; moderate risk, 27.2%; high risk, 12.8%; and very high risk, 13%. The prevalence of CKD in patients with T2DM was 53%. Variables significantly associated with CKD include neuropathy, blood pressure ≥140/80 mmHg, triglycerides ≥1.7 mmol, body mass index, duration of diabetes, HbA1c ≥8%, age, cardiovascular disease, and proliferative retinopathy.
<b>CONCLUSIONb>CKD was highly prevalent among patients with T2DM in Singapore. Several risk factors for CKD are well recognised and amenable to intervention. Routine rigorous screening for DN and enhanced programme for global risk factors reduction will be critical to stem the tide of DN.
Adult ; Aged ; Aged, 80 and over ; Cross-Sectional Studies ; Diabetes Mellitus, Type 2 ; complications ; Female ; Humans ; Logistic Models ; Male ; Middle Aged ; Prevalence ; Renal Insufficiency, Chronic ; diagnosis ; epidemiology ; etiology ; Risk Factors ; Singapore
4.Ultrasound-Guided Posterolateral Approach for Midline Calcified Thoracic Disc Herniation.
Lee A TAN ; Demetrius K LOPES ; Ricardo B V FONTES
Journal of Korean Neurosurgical Society 2014;55(6):383-386
OBJECTIVE: Symptomatic thoracic disc herniation often requires prompt surgical treatment to prevent neurological deterioration and permanent deficits. Anterior approaches offer direct visualization and access to the herniated disc and anterior dura but require access surgeons and are often associated with considerable postoperative pain and pulmonary complications. A disadvantage with using posterior approaches in the setting of central calcified thoracic disc herniation however, has been the limited visualization of anterior dura and difficulty to accurately assess the extent of decompression. METHODS: We report our experience with intraoperative ultrasound (US) guidance during a modified posterior transpedicular approach for removal of a central calcified thoracic disc herniation with a review of pertinent literature. RESULTS: The herniated thoracic disc was successfully removed with posterior approach with the aid of intraoperative US. The patient had significant neurological improvement at three months follow-up. CONCLUSION: Intraoperative ultrasound is a simple yet valuable tool for real-time imaging during transpedicular thoracic discectomy. Visualization provided by intraoperative US increases the safety profile of posterior approaches and may make thoracotomy unnecessary in a selected group of patients, especially when a patient has existing pulmonary disease or is otherwise not medically fit for the transthoracic approach.
Decompression
;
Diskectomy
;
Follow-Up Studies
;
Humans
;
Intervertebral Disc Displacement
;
Lung Diseases
;
Pain, Postoperative
;
Thoracotomy
;
Ultrasonography
5.Percutaneous transluminal angioplasty of transplant renal artery stenosis.
Lee Lian CHEW ; Bien Soo TAN ; Krishna KUMAR ; Maung Myint HTOO ; Kok Seng WONG ; Christopher W S CHENG ; Terence K B TEO ; Farah Gillani IRANI ; Hui Lin CHOONG ; Kiang Hiong TAY
Annals of the Academy of Medicine, Singapore 2014;43(1):39-43
<b>INTRODUCTIONb>This study aimed to assess the outcome of percutaneous transluminal angioplasty (PTA) as the primary treatment for transplant renal artery stenosis (TxRAS).
<b>MATERIALS AND METHODSb>A retrospective review of PTA of TxRAS from April 1999 to December 2008 was performed. Twenty-seven patients (17 males (M):10 females (F)) with the mean age of 49.5 years underwent PTA of TxRAS in the review period. Indications for PTA were suboptimal control of hypertension (n=12), impaired renal function (n=6) and both suboptimal control of hypertension and impaired renal function (n=9). All patients had doppler ultrasound scans prior to their PTA. In addition, 5 of these patients had computed tomography angiography (CTA) and another 7 had magnetic resonance angiography (MRA) evaluation. Mean follow-up period was 57.0 months (range, 7 to 108 months).
<b>RESULTSb>The stenotic lesions were located proximal to the anastomosis (n=2), at the anastomosis (n=15), and distal to the anastomosis (n=14). Technical success rate was 96.3%. One case was complicated by extensive dissection during PTA, resulting in subsequent graft failure. The overall clinical success rate was 76.9%. Seven out of 26 patients had restenoses (26.9% of cases). These were detected at a mean of 14.3 months post angioplasty (range, 5 to 38 months). All 7 patients underwent a second PTA successfully. Three of these patients required more than 1 repeat PTA.
<b>CONCLUSIONb>PTA is safe and effective in the management of symptomatic TxRAS and should be the primary treatment of choice. Close surveillance for restenosis is required and when diagnosed, re-angioplasty can be performed.
Adult ; Angioplasty ; Female ; Humans ; Kidney Transplantation ; Male ; Middle Aged ; Postoperative Complications ; surgery ; Renal Artery Obstruction ; surgery ; Retrospective Studies ; Time Factors
6.A case of myeloid sarcoma with unusually extensive and rapidly progressive skin manifestations.
Eugene S T TAN ; Mark B Y TANG ; Keith Y K GUAN ; Joyce S S LEE ; Lorenzo CERRONI ; Suat Hoon TAN
Annals of the Academy of Medicine, Singapore 2011;40(9):424-426
Aged
;
Dermis
;
pathology
;
Disease Progression
;
Extremities
;
Face
;
Fatal Outcome
;
Humans
;
Male
;
Sarcoma, Myeloid
;
pathology
;
Skin
;
pathology
;
Thorax
7.MARS liver dialysis in children with acute liver failure.
M Da COSTA ; M K H LEE ; H L LEE ; M AW ; K H LEE ; K B PHUA ; K PRABHAKARAN ; S H QUAK
Annals of the Academy of Medicine, Singapore 2004;33(5 Suppl):S73-4
8.A retrospective comparison of four different procedures for extracting dermoid cyst by laparoscopy.
Yoon S LEE ; Taek H LEE ; Young R CHO ; Sang S CHUN ; Il S PARK ; In K KANG ; Tae B KOO ; Jin H CHOI
Korean Journal of Obstetrics and Gynecology 2002;45(2):239-243
OBJECTIVES: To compare results of 4 different extraction methods in laparoscopic management of dermoid cyst. STUDY DESIGN: This article is a retrospective, multicenter study for 247 patients with benign dermoid cyst in period of 1995-1998. Dermoid cyst was extracted by Endopouch (99 cases), puncture-irrigation-extraction (69 cases), colpotomy (35 cases), and dermoid cyst as a "pouch bag" (44 cases). RESULTS: We analyzed irrigation amount, operative time, postoperative hospital stay and complications by four different extraction methods. Endopouch extraction method needed less amount of irrigation fluid for cleaning the abdominal cavity and had a shorter postoperative hospital stay (ANOVA, p=0.0001). There were no significant differences in operative times among groups. There were four cases of morbidity in puncture-irrigation-extraction method (6%), three had fever (> 38degrees C) and one intraabdominal abscess. One incisional hernia was noted in "pouch bag" method (2%). CONCLUSIONS: We recommend minimal spillage method for extraction of dermoid and careful irrigation of abdominal cavity to prevent potential risk of chemical peritonitis such as Endopouch, "pouch bag", and colpotomy with the exception of puncture-irrigation-extraction method.
Abdominal Cavity
;
Abscess
;
Colpotomy
;
Dermoid Cyst*
;
Fever
;
Hernia
;
Humans
;
Laparoscopy*
;
Length of Stay
;
Operative Time
;
Peritonitis
;
Retrospective Studies*
9.Assessments of myocardial perfusion in human using stress intravenous PESDA myocardial contrast echocardiography and Pulse Inversion Harmonic Imaging: A Comparison study with Tc-99m sestamibi SPECT.
Ki Hwan KWON ; N CHUNG ; J W HA ; S J RIM ; H J KIM ; K J CHANG ; B K LEE ; W B PYUN ; I J KIM ; D K KIM ; D H CHOI ; Y S JANG ; J D LEE ; S Y CHO ; S S KIM
Korean Circulation Journal 2000;30(7):793-802
OBJECTIVE: The object of this study was to assess the accuracy of dipyridamole stress intravenous (IV) myocardial contrast echocardiography (MCE) using pulse inversion harmonic imaging and PESDA in the detection of perfusion defect in the patients with coronary artery disease in comparison with dipyridamole stress Tc-99m sestamibi SPECT. METHODS: Total 46 patients (29 males, mean age 64 years old) were consecutively enrolled. Patients with prior myocardial infarction were excluded. MCE and Tc-99m sestamibi SPECT were performed at the same day during rest and after 0.56 or 0.84mg/Kg dipyridamole infusion. Continuous IV infusion of PESDA (2-5 mL/min) was administered while obtaining triggered (1:1) end-systolic apical 2, 4 chamber and long axis views. Tc-99m sestamibi was injected 3 minutes after dipyridamole. Tc-99m sestamibi SPECT images were obtained one hour later. Coronary angiography was followed within two days in all patients. Tc-99m sestamibi SPECT images were matched to the sixteen segments of left ventricle according to American Society of Echocardiography for segmental comparison. Both images were analyzed visually. Results Using coronary angiography as the standard, MCE showed overall sensitivity of 70.7%, specificity of 95.8%, positive predictive value (PPV) of 87.8% and negative predictive value (NPV) of 88.5% in the detection of coronary atherosclerosis (70% stenosis). Tc-99m sestamibi SPECT showed sensitivity of 75.6%, specificity of 98.9%, PPV of 96.8% and NPV of 90.6%. The overall concordance rate between MCE and Tc-99m sestamibi SPECT for the detection of perfusion defects was 86.9% (Cohen's kappa value 0.63) according to the coronary territory and 86.8% (Cohen's kappa value 0.55) according to segmental analysis. CONCLUSION: Dipyridamole stress IV MCE using pulse inversion harmonic imaging and PESDA is feasible and comparable to Tc-99m sestamibi SPECT in identifying significant coronary stenosis and inducible myocardial perfusion defects in the patients with coronary artery disease. MCE using pulse inversion harmonic imaging seems to be a promising modality for assessing myocardial perfusion in the patients with suspected coronary artery disease.
Axis, Cervical Vertebra
;
Coronary Angiography
;
Coronary Artery Disease
;
Coronary Stenosis
;
Dipyridamole
;
Echocardiography*
;
Heart Ventricles
;
Humans*
;
Male
;
Myocardial Infarction
;
Perfusion*
;
Sensitivity and Specificity
;
Tomography, Emission-Computed, Single-Photon*
10.Coefficient Variations of Serum Levels of Phenytoin, Carbamazepine, and Valproic Acid in Compliant Epileptics.
Hae Jung YUN ; O Y KWON ; K J PARK ; N G KIM ; T Y KIM ; S C JEON ; J G HONG ; J H KWAK ; Y H LEE ; N C CHOI ; B H LIM
Journal of the Korean Neurological Association 1999;17(1):72-78
Compliance of epileptic patients is one of the most important factors for adequate therapy. Recently, it had been shown that the variability of three serial measurement of the serum levels of antiepileptic drug(AED) may be used as an indication of the degree of compliance. Coefficient variation(CV) of serum drug levels calculated by only one AED had been used to determine the compliance in epileptic patients who took multiple AEDs. We attempted to evaluate the CV of AEDs and then find the objective clue of compliance and the compatible therapeutic planing according to CV. Ninety seven epileptic patients of outpatients department of the Gyengsang National University Hospital were entered to this study. All patients were taking medication at least for 6 months without any changes of drug regimen. Patient's information was acquired by reviewing the chart and interview with questionnaire. With these informations, we determined the compliance of the patients. Antiepileptic serum levels were measured three times at intervals of at least two to four weeks apart, and their CV was calculated. We compared the CV between the compliant and non-compliant group in each AED(phenytoin, carbamazepine , valproic acid) and three drugs in the compliant group. The mean CVs of phenytoin, carbamazepine and valproic acid in the compliant group were 18.3+/-13.0, 15.2+/-10.2 and 23.8+/-8.9, respectively(mean+/-SD). The mean of CV in the compliant and the non-compliant group were 17.9+/-10.9 and 38.8+/-27.2, respectively. The CVs of the compliant group were significantly lower than those of the non-compliant group(p<0.05). However, CVs had no significant difference between three antiepileptic drugs. This study showed that CVs of AEDs were not different between each AEDs, even though they possess different pharmacokinetic properties. Therefore, the CV of one AED can be used in determining the compliance of the epileptics who are taking multiple AEDs.
Anticonvulsants
;
Carbamazepine*
;
Compliance
;
Humans
;
Outpatients
;
Phenytoin*
;
Surveys and Questionnaires
;
Valproic Acid*

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