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Sasivimol Promma Chanika Sritara Saowanee Wipuchwongsakorn Krisanat Chuamsaamarkkee Chirawat Utamakul Wichana Chamroonrat Arpakorn Kositwattanarerk Yoch Anongpornjossakul Kanungnij Thamnirat Boonsong Ongphiphadhanakul 《Journal of clinical densitometry》2018,21(2):252-259
Improper positioning is one of the factors that can lead to incorrect bone mineral density (BMD) results. This study aimed to assess the frequencies of erroneous positioning during three periods: before retraining of the technologists (BR), after retraining (AR), and at the current timepoint 8 years after retraining (C). The BMD images of the first 150 consecutive patients who underwent DXA of the lumbar spine and hip during each of the three periods were retrospectively reviewed. Patients were excluded if they had severe scoliosis, rendering proper positioning impossible. Each BMD image was assessed by an International Society of Clinical Densitometry certified clinical densitometrist who was blinded to the date of the initial examination. For the lumbar spine in the BR group, the criteria frequently not met were inclusion of both iliac crests (33.8%), straightness (30.3%), and midline positioning (20.4%); the respective frequencies were significantly reduced to 0.8%?5.6%, 2.1%?3.0%, and 0%?2.8% in the AR and C groups (p < 0.05). For the hip in the BR group, the criteria frequently not met were straightness (52.8%) and internal rotation (21.8%); the respective frequencies were significantly reduced to 0%?4.2% and 8.3%?8.4% in the AR and C groups (p < 0.05). Overall improper positioning in the BR group was 49.3% and 57.3% at the lumbar spine and the hip, respectively; the respective frequencies were reduced to 9.3% and 12.7% in the AR group, and to 2.7% and 7.3% in the C group. The least significant change values for the lumbar spine, femoral neck, and total hip also became smaller after retraining. Retraining the technologists improved patient positioning, as evidenced by the decreased frequencies of erroneous positioning and the improved least significant change values after the retraining. 相似文献
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Background
Hepatocellular carcinoma (HCC) is a leading cancer-related cause of death worldwide. There are widespread global differences in HCC risk. Although the impact of geographic prevalence of specific causes of chronic liver disease on HCC is recognized, the contribution of the underlying genetic architecture to the risk of HCC remains undefined. Our aim was to characterize evolutionary trends in genetic susceptibility to HCC.Methods
We examined the genetic risk associated with HCC risk alleles identified from genome-wide association studies and correlated these with geographic location and temporal and spatial patterns of human migration.Results
A moderate increase in differentiation was noted for rs2596542 (F st = 0.106) and rs17401966 (F st = 0.116), single nucleotide polymorphisms (SNPs) associated with an increased risk of HCC in patients with chronic HCV and HBV, respectively. Both of these SNPs show a recent increase in allelic frequency with the most recent human migrations into East Asia, Oceania and the Americas. In contrast another SNP associated with an increased risk of HCC, rs9275572, showed a lack of differentiation (F st = 0.09) with stable allelic expression across populations. The genetic risk score for HCC, based on the allelic frequency and risk odds ratio of five SNPs associated with increased risk of HCC, was greatest in populations from Africa and decreased with subsequent migration into Europe and Asia. However, a major increase was noted with the most recent migrations into Oceania and the Americas.Conclusions
There are differences in directional differentiation of HCC risk alleles across human populations that can contribute to population-based differences in HCC prevalence. 相似文献4.
Kajanachumpol S Vanichapuntu M Verasertniyom O Totemchokchyakarn K Vatanasuk M 《The Southeast Asian journal of tropical medicine and public health》2000,31(2):335-338
Oxygen free radicals have been implicated as mediators of tissue damage in patients with rheumatoid arthritis. The aim of our study was to assess the lipid peroxide products and antioxidant status in rheumatoid arthritis patients (RA). The study involved determination of two plasma lipid peroxide products, malondialdehyde (MDA) and conjugated dienes (CD), two plasma antioxidant vitamins (C and E) in 91 RA patients and 26 healthy subjects. The results showed that rheumatoid patients had increased plasma CD but not MDA and decreased plasma vitamin E, when properly expressed per unit cholesterol and triglyceride. This finding suggested that RA patients had increased oxidant stress that might play a role in the tissue damage and inflammation process of this disease. 相似文献
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Sindhu Barola Lea Fayad Christine Hill Thomas Magnuson Michael Schweitzer Vikesh Singh Yen-I Chen Saowanee Ngamruengphong Mouen A. Khashab Anthony N. Kalloo Vivek Kumbhari 《Obesity surgery》2018,28(8):2252-2260
Background
Management options for marginal ulcers (MU) vary from medical therapy to revision surgery. Medical therapy is often ineffective and revision surgery is associated with a high morbidity and possible recurrence.Aims
To evaluate technical feasibility, efficacy, and safety of endoscopic management of MU by covering the ulcer bed using oversewing and/or deploying a fully covered self-expandable metallic stent (FCSEMS).Methods
Medical records of consecutive patients who underwent endoscopic suturing and/or FCSEMS deployment for recalcitrant MU between August 2016 and June 2017 at a single academic center were reviewed. Recalcitrant MU was defined as an ulcer that persists after 6 to 8 weeks despite maximal medical therapy (open capsule PPI, 40 mg bid as well as sucralfate qid), cessation of smoking and nonsteroidal anti-inflammatory drugs (NSAIDs), and Helicobacter pylori eradication.Results
Eleven patients (age range 31–60; all females) with mean BMI of 27.72 ±?5.93 kg/m2 underwent endoscopic suturing and/or stent deployment for recalcitrant MU with abdominal pain at a median of 50 months (range 3–120) post-Roux-en-Y gastric bypass (RYGB). Seven patients were managed by oversewing, two were managed by FCSEMS, and two patients required both. Technical success was 100%. All patients reported resolution of abdominal pain at 1 week. Surveillance endoscopy performed in 10/11 (90.9%) patients at 8 weeks revealed complete ulcer healing in 9/10 (90%). No adverse events were reported.Conclusion
Endoscopic management is an effective and safe method to treat MU and should be considered an alternative to surgical revision. It appears effective for perforated and recalcitrant MU.6.
Kornsorn Srikulnath Chizuko Nishida Kazumi Matsubara Yoshinobu Uno Amara Thongpan Saowanee Suputtitada Somsak Apisitwanich Yoichi Matsuda 《Chromosome research》2009,17(8):975-986
The butterfly lizard (Leiolepis reevesii rubritaeniata) has the diploid chromosome number of 2n = 36, comprising two distinctive components, macrochromosomes and microchromosomes. To clarify the conserved linkage homology
between lizard and snake chromosomes and to delineate the process of karyotypic evolution in Squamata, we constructed a cytogenetic
map of L. reevesii rubritaeniata with 54 functional genes and compared it with that of the Japanese four-striped rat snake (E. quadrivirgata, 2n = 36). Six pairs of the lizard macrochromosomes were homologous to eight pairs of the snake macrochromosomes. The lizard
chromosomes 1, 2, 4, and 6 corresponded to the snake chromosomes 1, 2, 3, and Z, respectively. LRE3p and LRE3q showed the
homology with EQU5 and EQU4, respectively, and LRE5p and LRE5q corresponded to EQU7 and EQU6, respectively. These results
suggest that the genetic linkages have been highly conserved between the two species and that their karyotypic difference
might be caused by the telomere-to-telomere fusion events followed by inactivation of one of two centromeres on the derived
dicentric chromosomes in the lineage of L. reevesii rubritaeniata or the centric fission events of the bi-armed macrochromosomes and subsequent centromere repositioning in the lineage of
E. quadrivirgata. The homology with L. reevesii rubritaeniata microchromosomes were also identified in the distal regions of EQU1p and 1q, indicating the occurrence of telomere-to-telomere
fusions of microchromosomes to the p and q arms of EQU1. 相似文献
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Saowanee Luangaram Upa Kukongviriyapan Poungrat Pakdeechote Veerapol Kukongviriyapan Patchareewan Pannangpetch 《Food and chemical toxicology》2007,45(3):448-455
Oxidative stress is a major contributor to the development of vascular dysfunction found in various pathological conditions. Quercetin, one of the potent antioxidant bioflavonoid compounds, has been shown to alleviate oxidative injury by modulation of gene expression leading to suppression of production of reactive oxygen and nitrogen species and conferring an antiapoptotic activity. The aim of the present study was to investigate the protective effects of quercetin in a model of phenylhydrazine (PHZ)-induced oxidant stress, vascular dysfunction and hemodynamic disturbance in rats. Male Sprague-Dawley rats were administered quercetin orally (25 or 50mg/kg/day) for 6 days. On day four, all animals except those in the normal control group, were administered PHZ intraperitoneally. The results showed that PHZ induced severe hemolysis. The mean arterial pressure and hindlimb vascular resistance of PHZ-control rats were markedly decreased compared to normal controls. Treatment with quercetin significantly improved arterial blood pressure and peripheral vascular resistance. Vascular responsiveness to bradykinin, acetylcholine, and phenylephrine in PHZ-control rats was dramatically suppressed and quercetin restored these responses in a dose-dependent manner. Quercetin partially protected blood glutathione, suppressed plasma malondialdehyde levels, and largely suppressed nitric oxide metabolites and superoxide anion production. These results provide the first evidence for the role of the flavonoid, quercetin, in the alleviation of vascular dysfunction in an animal model of PHZ-induced oxidant stress. 相似文献
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Jaakchai JUNGTHIRAPANICH Vararat SINGKHWA Dhevy WATANA Prasit FUTRAKUL Rachanee SENSIRIVATANA Saowanee YENRUDI 《Nephrology (Carlton, Vic.)》1997,3(4):509-514
Summary: The significance of tubulointerstitial fibrosis in paediatric patients with primary diffuse mesangial proliferative glomerulonephritis and IgM deposition (IgM nephropathy) has not been well documented. the clinical course, therapeutic response and final outcome of 35 patients in whom renal biopsies showed IgM nephropathy are reported. They have been subdivided into two groups according to the absence (19 patients: group I) or presence (16 patients: group II) of superimposed lesion of tubulointerstitial fibrosis. Clinical presentation was similar in both groups but the patients in group I were male predominant (2.8:1 vs 1: 1). 6/19 (31.6%) of the patients in group I and 1/16 (6.3%) in group II responded to corticosteroid, 11/19 (57.9%) in group I and 8/16 (50.0%) in group II had steroid dependent, whereas 2/19 (10.5%) in group I and 7/16 (43.7%) in group II had steroid resistant. About 42% of the patients in group I and 94% in group II required cyclophosphamide therapy by which similar response in both groups (approximately 75%) were observed. the steroid non-responders and cyclophosphosphamide therapy among patients in group II were significantly higher ( P <0.05) than the group I. At the latest assessment, 5/16 (31.3%) in group I and 7/14 (50%) in group II had impaired renal function. the follow-up period in both groups were 3.1 ± 2.8 and 3.4 ± 2.9 years, respectively. In conclusion, the finding of tubulointerstitial fibrosis in a paediatric IgM nephropathy indicates an unfavourable therapeutic response. 相似文献
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Saowanee Srirattanapong Wirana Angthong Bong Soo Kim Paul Hideyo Hayashi David A. Gerber John T. Woosley Jared Peacock Anuruddika Ranatunga Richard C. Semelka 《Abdominal imaging》2014,39(2):269-282