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排序方式: 共有90条查询结果,搜索用时 78 毫秒
1.
Hongbin Xu Nongnuj Tanphaichitr Poh-Gek Forkert Araya Anupriwan Wattana Weerachatyanukul Renaud Vincent Arthur Leader Michael G Wade 《Toxicological sciences》2004,82(2):590-597
Trichloroethylene (TCE) is a prevalent occupational and environmental contaminant that has been reported to cause a variety of toxic effects. Here, we have undertaken studies to test the hypothesis that TCE exposure adversely affects sperm function and fertilization. Sperm retrieved from mice exposed to TCE (1000 ppm) by inhalation for 1 to 6 weeks were incubated in vitro with eggs isolated from superovulated female mice. The number of sperm bound per egg was significantly decreased when mice were exposed to TCE for 2 and 6 weeks but not at exposures of 1 and 4 weeks. In vivo fertilization was also determined in superovulated female mice mated with males exposed to TCE for 2 to 6 weeks. The percentages of eggs fertilized, as assessed by the presence of two pronuclei, were significantly decreased after 2 and 6 weeks of TCE exposure. A slight but insignificant decrease was observed after 4 weeks of TCE exposure. The direct effects of TCE and its metabolites, chloral hydrate (CH) and trichloroethanol (TCOH), on in vitro sperm-egg binding were also investigated. Sperm-egg binding was significantly decreased when sperm were pretreated with CH (0.1-10 microg/mL). Significantly lower levels of sperm-egg binding were also detected with TCOH (0.1-10 microg/mL), although the decreases were not as pronounced as those for CH. These results showed that TCE exposure leads to impairment of sperm fertilizing ability, which may be attributed to TCE metabolites, CH, and TCOH. 相似文献
2.
Treatment outcomes and validation of the stopping rule for response to peginterferon in chronic hepatitis B: A Thai nationwide cohort study
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Phunchai Charatcharoenwitthaya Wattana Sukeepaisarnjaroen Teerha Piratvisuth Satawat Thongsawat Theeranun Sanpajit Soonthorn Chonprasertsuk Woramon Jeamsripong Ekawee Sripariwuth Piyawat Komolmit Tanisa Patcharatrakul Rattana Boonsirichan Chalermrat Bunchorntavakul Supoj Tuntipanichteerakul Tawesak Tanwandee for the Thai Association for the Study of the Liver on Chronic Hepatitis B 《Journal of gastroenterology and hepatology》2016,31(11):1874-1881
3.
Highly variable sequences in the env V3 region of HIV type 1 distributing among Thai carriers from 1995 to 1997 总被引:2,自引:0,他引:2
Auwanit W Ayuthaya PI Duangchanda S Mukai T Kurata T Ikuta K 《AIDS research and human retroviruses》2000,16(3):283-289
The amino acid sequences of the Env V3 region of HIV-1 subtype E in Thailand were highly variable in the samples obtained from 1995 to 1997, compared with the previously reported sequences in samples obtained from 1990 to 1993. The sequences of the V3 region in the samples from five provinces in Thailand revealed that the variability was much higher in the samples from Bangkok and Ubonrachathani than in those from Chiangmai, Prathumthani, and Trang. There was no apparently different level of diversity at the V3 region in the samples from symptomatic and asymptomatic individuals. The V3 loop motif in most (66.7%) of the samples was GPGQ, although this motif was more heterogeneous in the samples from Bangkok and Ubonrachathani than in those from the other three provinces. The N-linked glycosylation sites in the V3 region among these samples were relatively conserved. There was no apparent difference in the presence of positively charged amino acids at positions 306 and 320 between the samples from symptomatic and asymptomatic individuals. 相似文献
4.
Wattana Leowattana Tawithep Leowattana 《World journal of gastroenterology : WJG》2022,28(28):3608-3619
Proton pump inhibitors (PPIs), the most commonly used antisecretory medi-cations in the management of reflux illness, virtually eliminate elective surgery for ulcer disease, and relegate anti-reflux surgery to patients with gastroesophageal reflux disease (GERD) who are inadequately managed by medical therapy. However, PPI medications still leave some therapeutic demands of GERD unmet. Furthermore, up to 40%-55% of daily PPI users have chronic symptoms, due to PPI refractoriness. Potassium-competitive acid blockers (P-CABs) transcend many of the problems and limits of PPIs, delivering quick, powerful, and extended acid suppression and allowing for treatment of numerous unmet needs. Recently, it has become clear that compromised mucosal integrity plays a role in the etiology of GERD. As a result, esophageal mucosal protection has emerged as a novel and potential treatment approach. An increasing body of research demonstrates that when P-CABs are used as primary drugs or add-on drugs (to regular treatment), they provide a considerable extra benefit, particularly in alleviating symptoms that do not respond to PPI therapy. 相似文献
5.
Jiraporn Laothamatas Christina L. Sammet Xavier Golay Marc Van Cauteren Varinee Lekprasert Noppadon Tangpukdee Srivicha Krudsood Wattana Leowattana Polrat Wilairatana Srirama V. Swaminathan Robert L. DeLaPaz Truman R. Brown Sornchai Looareesuwan Gary M. Brittenham 《The American journal of tropical medicine and hygiene》2014,90(6):1117-1123
Patients with acute uncomplicated Plasmodium falciparum malaria have no evident neurologic disorder, vital organ dysfunction, or other severe manifestations of infection. Nonetheless, parasitized erythrocytes cytoadhere to the endothelium throughout their microvasculature, especially within the brain. We aimed to determine if 3 Tesla magnetic resonance imaging studies could detect evidence of cerebral abnormalities in these patients. Within 24 hours of admission, initial magnetic resonance imaging examinations found a lesion with restricted water diffusion in the mid-portion of the splenium of the corpus callosum of 4 (40%) of 10 male patients. The four patients who had a splenial lesion initially had evidence of more severe hemolysis and thrombocytopenia than the six patients who had no apparent abnormality. Repeat studies four weeks later found no residua of the lesions and resolution of the hematologic differences. These observations provide evidence for acute cerebral injury in the absence of severe or cerebral malaria. 相似文献
6.
7.
Dengue hemorrhagic fever (DHF) is one of the most rapidly emerging infections of tropical and subtropical regions worldwide. It affects more rural and urban areas due to many factors, including climate change. Although most people with dengue viral infection are asymptomatic, approximately 25% experience a self-limited febrile illness with mild to moderate biochemical abnormalities. Severe dengue diseases develop in a small proportion of these patients, and the common organ involvement is the liver. The hepatocellular injury was found in 60%-90% of DHF patients manifested as hepatomegaly, jaundice, elevated aminotransferase enzymes, and critical condition as an acute liver failure (ALF). Even the incidence of ALF in DHF is very low (0.31%-1.1%), but it is associated with a relatively high mortality rate (20%-68.3%). The pathophysiology of liver injury in DHF included the direct cytopathic effect of the DENV causing hepatocytes apoptosis, immune-mediated hepatocyte injury induced hepatitis, and cytokine storm. Hepatic hypoperfusion is another contributing factor in dengue shock syndrome. The reduction of morbidity and mortality in DHF with liver involvement is dependent on the early detection of warning signs before the development of ALF. 相似文献
8.
Construction and characterization of an infectious molecular clone derived from the CRF01_AE primary isolate of HIV type 1 总被引:2,自引:0,他引:2
Mukai T Komoto S Kurosu T Palacios JA Li YG Auwanit W Tatsumi M Ikuta K 《AIDS research and human retroviruses》2002,18(8):585-589
An infectious molecular clone (named p95TNIH022) was constructed using long-range polymerase chain reaction products derived from a clinical isolate (95TNIH022) of HIV-1 CRF01_AE obtained from an asymptomatic Thai carrier in 1995. The virus in the supernatant from p95TNIH022-transfected 293T cells showed infectivity in peripheral blood mononuclear cells (PBMCs) as well as in MAGIC5 cells, which express CD4 and CCR5, but not in the original MAGI cells, indicating that p95TNIH022 is an infectious molecular clone with CCR5 tropism. Interestingly, p95TNIH022-derived virus induced profound cell killing in infected PBMCs, as in cells infected with the parental isolate. 相似文献
9.
Pakakasama S Hongeng S Chaisiripoomkere W Chuansumrit A Sirachainun N Jootar S 《Journal of pediatric hematology/oncology》2004,26(4):248-252
To determine the outcome of children with homozygous beta-thalassemia (beta/beta) and severe beta-thalassemia/hemoglobin E disease (beta/E) who underwent allogeneic peripheral blood stem cell transplantation (PBSCT). The authors conducted a cohort study of allogeneic PBSCT in beta/beta and beta/E patients who had 6/6 or 5/6 HLA-matched sibling donors. All patients received a conditioning regimen including busulfan and cyclophosphamide, except one who received busul-fan and cyclophosphamide plus antithymocyte globulin. Graft-versus-host disease (GVHD) prophylaxis consisted of cyclosporine A and methotrexate for eight patients and cyclosporine and mycophenolate mofetil for one patient. Donors received G-CSF for 4 days before leukapheresis collections. There were five beta/beta and four beta/E patients in this study. The median age was 9 years (range 1.5-10 years). The median CD34+ cell count was 7.4 x 10(6) cells/kg recipient body weight. All patients achieved neutrophil and platelet engraftment with a median time of 15 days and 21 days respectively. Acute GVHD grade 2 to 4 appeared in four patients (grade 2, n = 3; grade 4, n = 1). Three patients developed chronic GVHD (limited, n = 2; extensive, n = 1). All patients were alive with a median follow-up time of 23 months (range 7-52 months). Neither graft failure nor graft rejection was observed. Allogeneic PBSCT is feasible for children with beta/beta and beta/E, although the incidence of GVHD was apparently high compared with bone marrow transplant study in Thais. 相似文献
10.
Atypical avian influenza (H5N1) 总被引:6,自引:0,他引:6
Apisarnthanarak A Kitphati R Thongphubeth K Patoomanunt P Anthanont P Auwanit W Thawatsupha P Chittaganpitch M Saeng-Aroon S Waicharoen S Apisarnthanarak P Storch GA Mundy LM Fraser VJ 《Emerging infectious diseases》2004,10(7):1321-1324
We report the first case of avian influenza in a patient with fever and diarrhea but no respiratory symptoms. Avian influenza should be included in the differential diagnosis for patients with predominantly gastrointestinal symptoms, particularly if they have a history of exposure to poultry. 相似文献