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    题名 作者 年代 出处 被引量
1亚太地区慢性乙型肝炎治疗共识(2012最新版)显示文摘自2008年至今,有大量关于慢性HBV感染的自然史和治疗的最新数据不断涌现。其中包括慢性HBV感染的无症状感染者,以社区为基础的队列研究,HBV基因型的作用,非药物诱导的自然HBV变异型毒株,无创性肝纤维化评估方法的应用,HBsAg定量在临床中的应用,更有效的新治疗药物和新治疗方案等等。来自亚太地区的专家审查和评估了相关数据,并共同商讨了近年来报道的最有意义的发现,基于此,对2008年版的亚太地区慢性乙型肝炎治疗共识进行修订,同时对2008年版治疗指南定义的关键词组进行了修订。修订后的指南包括以下几方面内容:一般治疗,肝纤维化评价适应证,何时开始治疗或停药,初始抗病毒治疗药物的选择,如何监测治疗中和治疗后的患者。关于特殊人群的治疗建议中包括了对妊娠妇女,已发生耐药,合并其他病毒感染,肝功能失代偿,接受免疫抑制治疗、化疗,肝移植或肝细胞癌患者的具体治疗建议。廖运范 Jia-HorngKao Teerha Piratvisuth Henry Lik Yuen Chan Rong-Nan Chien Chun-Jen Liu Ed Gane Stephen Locarnini Seng-Gee Lim Kwang-Hyub Han Deepak Amarapurkar Graham Cooksley Wasim Jafri Rosmawati Mohamed Wan-Long Chuang Laurentius A.Lesmana Jose D.Sollano Dong-Jin Suh Masao Omata 刘颖 徐莹 李芸 黄祖雄 樊蓉 李小溪 吕国涛 周彬 孙剑 侯金林 2012临床肝胆病杂志2012,28,8:182
2仿人机器人复杂动态动作设计及相似性研究显示文摘提出了一种基于人体运动的考虑节奏相似性的仿人机器人复杂动态动作设计方法.首先,把人体的运动分割成基本动作段,给出了运动学约束,讨论了复杂动态动作的稳定性调节方法.然后,提出了考虑运动节奏的仿人机器人模仿人体动作的相似性函数,并给出了满足运动学约束和动力学稳定性、具有高相似性的运动轨迹求解方法.最后,通过在仿人机器人BHR-2上进行中国功夫“刀术”实验验证了该方法的有效性.张利格 黄强 杨洁 时有 王志杰 JAFRI Ali Raza 2007自动化学报2007,33,5:28
3新型模块化多电平换流器串联电抗器的功能与取值分析显示文摘从模块化多电平换流器正常工作状态的功率输出限制、相单元间2倍频环流限制、直流两极短路电流限制、输出交流三相短路电流限制4个方面分析了子模块串联电抗器的功能及相应的数学关系。根据分析结果,给出了模块化多电平串联电抗器的选取原则和计算方法。基于工程实际需要,通常相单元间高频环流可通过控制回路附加抑制环流控制器来有效抑制,而串联电抗器值应根据直流两极短路和输出交流三相短路电流限制要求来计算,最后可根据输出功率的要求进行校验。对一个设计实例进行了分析,给出了串联电抗器值选取的方法,验证它是合理可行的。谢妍 陈柏超 陈耀军 JAFRI 曾永胜 2012电力自动化设备2012,32,9:27
4Diagnostic dilemma of abdominal tuberculosis in non-HIV patients:An ongoing challenge for physicians显示文摘AIM: To assess the clinical features, yield of the diagnostic tests and outcome of abdominal tuberculosis in non-HIV patients. METHODS: Adult patients with discharge diagnosis of abdominal tuberculosis (based upon; positive microbiology, histo-pathology, imaging or response to trial of anti TB drugs) during the period 1999 to 2004 were analyzed. Patient’s characteristics, laboratory investigations, radiological, endoscopic and surgical findings were evaluated. Abdominal site involved (intestinal, peritoneal, visceral, and nodal) and response to treatment was also noted. RESULTS: There were 209 patients enrolled. One hundred and twenty-three (59%) were females. Symptoms were abdominal pain 194 (93%), fever 134 (64%), night sweats 99 (48%), weight loss 98 (47%), vomiting 75 (36%), ascites 74 (35%), constipation 64 (31%), and diarrhea 25 (12%). Sub-acute and acute intestinal obstruction was seen in 28 (13%) and 12 (11%) respectively. Radiological evidence of pulmonary tuberculosis was found in 134 (64%) patients. Basis of diagnosis of abdominal tuberculosis were radiology (Chest and barium X-Rays, Ultrasound and CT scan abdomen) in 111 (53%) and histo-pathology (tissue obtained during surgery, colonoscopy, CT or ultrasound guided biopsy, laparoscopy and upper gastro intestinal endoscopy) in 87 (42%) patients. Mycobacterium culture was positive in 6/87 (7%) patients and response to therapeutic trial of anti tubercular drugs was the basis of diagnosis in 5 (2.3%) patients. Predominant site of involvement by abdominal TB was intestinal in 103 (49%) patients, peritoneal in 87 (42%) patients, solid viscera in 10 (5%) and nodal in 9 (4%) patients. Response to medical treatment was found in 158 (76%) patients andadditionally 35 (17%) patients also underwent surgery. In a 425 ± 120 d follow-up period 12 patients died (eight post operative) and no case of relapse was noted. CONCLUSION: Abdominal TB has diverse and non- specific symptomatology. No single test is adequate for diagnosis of abdominal tuberculosis in all patients. Abdominal TB in non-HIV patients remains an ongoing diagnostic dilemma requiring a high index of clinical suspicion.Rustam Khan Shahab Abid Wasim Jafri Zaigham Abbas Khalid Hameed Zubair Ahmad 2006World Journal of Gastroenterology2006,12,39:17
5Prevalence of gastric varices and results of sclerotherapy with N-butyl 2 cyanoacrylate for controlling acute gastric variceal bleeding显示文摘AIM: To study the prevalence, predictors and control of bleeding following N-butyl 2 cyanoacrylate (NBC) sclerotherapy of gastric varix (GV). METHODS: We analyzed case records of 1436 patients with portal hypertension, who underwent endoscopy during the past five years for variceal screening or upper gastrointestinal (GI) bleeding. Fifty patients with bleeding GV underwent sclerotherapy with a mean of 2 mL NBC for control of bleeding. Outcome parameters were primary hemostasis (bleeding control within the first 48 h), recurrent bleeding (after 48 h of esophago- gastro-duodenoscopy) and in-hospital mortality were analyzed. RESULTS: The prevalence of GV in patients with portal hypertension was 15% (220/1436) and the incidence of bleeding was 22.7% (50/220). Out of the 50 bleeding GV patients, isolated gastric varices (IGV-I) were seen in 22 (44%), gastro-oesophageal varices (GOV) on lesser curvature (GOV-Ⅰ) in 16 (32%), and GOV on greater curvature (GOV-Ⅱ) in 15 (30%). IGV-Ⅰ was seen in 44% (22/50) patients who had bleeding as compared to 23% (39/170) who did not have bleeding (P < 0.003). Primary hemostasis was achieved with NBC in all patients. Re-bleeding occurred in 7 (14%) patients after 48 h of initial sclerotherapy. Secondary hemostasis was achieved with repeat NBC sclerotherapy in 4/7 (57%). Three patients died after repeat sclerotherapy, one during transjugular intrahepatic portosystemic stem shunt (TIPSS), one during surgery and one due to uncontrolled bleeding. Treatment failure-related mortality rate was 6% (3/50). CONCLUSION: GV can be seen in 15% of patients withportal hypertension and the incidence of bleeding is 22.7%. NBC is highly effective in controlling GV bleeding. In hospital mortality of patients with bleeding GV is 6%.Khalid Mumtaz Shahid Majid Hasnain A Shah Kashif Hameed Ashfaq Ahmed Saeed Hamid Wasim Jafri 2007World Journal of Gastroenterology2007,13,8:12
6Asian Pacific Association for the Study of the Liver consensus recommendations on hepatocellular carcinoma显示文摘Masao Omata Laurentius A. Lesmana Ryosuke Tateishi Pei-Jer Chen Shi-Ming Lin Haruhiko Yoshida Masatoshi Kudo Jeong Min Lee Byung Ihn Choi Ronnie T. P. Poon Shuichiro Shiina Ann Lii Cheng Ji-Dong Jia Shuntaro Obi Kwang Hyub Han Wasim Jafri Pierce Chow Seng 2010Hepatology International2010,,2:11
7Predictive factors for early aspiration in liver abscess显示文摘AIM: To determine the predictive factors for early aspiration in liver abscess. METHODS: A retrospective analysis of all patients with liver abscess from 1995 to 2004 was performed. Abscess was diagnosed as amebic in 661 (68%) patients, pyogenic in 200 (21%), indeterminate in 73 (8%) and mixed in 32 (3%). Multiple logistic regression analysis was performed to determine predictive factors for aspiration of liver abscess. RESULTS: A total of 966 patients, 738 (76%) male, mean age 43 ± 17 years, were evaluated: 540 patients responded to medical therapy while adjunctive percutaneous aspiration was performed in 426 patients. Predictive factors for aspiration of liver abscess were: age ≥ 55 years, size of abscess ≥ 5 cm, involvement of both lobes of the liver and duration of symptoms ≥ 7 d. Hospital stay in the aspiration group was relatively longer than in the non aspiration group. Twelve patients died in the aspiration group and this mortality was not statistically significant when compared to the non aspiration group. CONCLUSION: Patients with advanced age, abscess size > 5 cm, both lobes of the liver involvement and duration of symptoms > 7 d were likely to undergo aspiration of the liver abscess, regardless of etiology.Rustam Khan Saeed Hamid Shahab Abid Wasim Jafri Zaigham Abbas Mohammed Islam Hasnain Shan Shaalan Beg 2008World Journal of Gastroenterology2008,14,13:8
8APASL consensus statements and management algorithms for hepatitis C virus infection显示文摘Masao Omata Tatsuo Kanda Ming-Lung Yu Osamu Yokosuka Seng-Gee Lim Wasim Jafri Ryosuke Tateishi Saeed S. Hamid Wan-Long Chuang Anuchit Chutaputti Lai Wei Jose Sollano Shiv Kumar Sarin Jia-Horng Kao Geoffrey W. McCaughan 2012Hepatology International2012,,2:8
9Effect of cytokine gene polymorphism on histological activity index, viral load and response to treatment in patients with chronic hepatitis C genotype 3显示文摘AIM: To investigate the association between cytokine gene polymorphism and disease status in chronic hepatitis C genotype 3 by liver biopsy, ALT, HCV RNA levels and response to treatment.METHODS: Patients with chronic hepatitis C genotype 3 were analyzed for single nucleotide polymorphisms of interleukin (IL)-10, IL-1 beta, interferon-gamma (IFN-γ),tumor necrosis factor-alpha (TNF-α) and transforming growth factor-beta (TGF-β) by polymerase chain reaction using sequence-specific oligonucleotide primers. Liver biopsies were assessed by modified histological activity index (HAI) scoring system using a scale of 0-18 for grading the necro-inflammatory activity and 0-6 for staging the fibrosis. HCV RNA levels were determined by bDNA assay. The patients were treated with interferon alpha and ribavirin for 6 mo. Sustained virological response was assessed 6 mo after the completion of the treatment.RESULTS: Out of the 40 patients analyzed, 26 were males. Mean age was 40.5±12.5 years (range 18-65 years). The frequencies of different dimorphic polymorphisms based on single nucleotide substitution were as follows: IL-10-1082 G/A 85%, A/A 12.5%, G/G 2.5%; IL-10-819 A/C 87.5%, C/C 10%, A/A 2.5%;IL-10-592 C/A 72.5%, C/C 27.5%; IL-1 C 90%, U 10%;IFN-874 T/A 50%, T/T 27.5%, A/A 22.5%; TNF-308A/G 95%, G/G 5%; TGF-10 T/C 52.5%, C/C 35%, T/T 12.5%. The mean grades of necro-inflammatoryactivity of different genotypes of IL-10 at promoter site -1082were A/A = 3.6, A/G = 5.0, and G/G = 10.0 and the difference was significant (P = 0.029). The difference in the stage of disease at a scale of 0-6 was A/A 0.8, A/G 2.3, and G/G 4.0 (P = 0.079). The difference in the HAI seemed to be related to the presence of allele -1082G.For IL-10 -819 genotypes, mean scores of fibrosis were A/A = 6.0, A/C = 2.2, and C/C = 1.0 (P = 0.020)though the inflammatory activity was not much different.No significant differences in HAI were noted among polymorphisms of other cytokines. Moreover, ALT and HCV RNA levels were not significantly different among different cytokine polymorphisms. There was a significant correlation of HAI and HCV RNA levels with the duration of disease. TGFβ -10 genotype CC patients had a better end of treatment response than those with other genotypes (P = 0.020). Sustained virological response to the treatment was not influenced by the cytokine polymorphism. No effect of other factors like viral load,degree of fibrosis, gender, steatosis, was observed on sustained virological response in this population infected with genotype 3.CONCLUSION: There is no significant correlation between cytokine polymorphisms and HAI except for the polymorphisms of anti-inflammatory cytokine IL-10,which may influence hepatic inflammatory activity and fibrosis in patients with chronic hepatitis C genotype 3.Sustained virological response in this genotype does not seem to be influenced by cytokine gene polymorphisms.Zaigham Abbas Tariq Moatter Akber Hussainy Wasim Jafri 2005World Journal of Gastroenterology2005,11,42:7
10Helicobacter pylori infection and micronutrient deficiencies显示文摘It is known that deficiencies of micronutrients due to infections increase morbidity and mortality. This phenomenon depicts itself conspicuously in developing countries.Deficiencies of iron, vitamins A, E, C, B12, etc are widely prevalent among populations living in the third world countries. Helicobacterpylori (Hpylori) infection has a high prevalence throughout the world. Deficiencies of several micronutrients due to Hpylori infection may be concomitantly present and vary from subtle sub-clinical states to severe clinical disorders. These essential trace elementsl micronutrients are involved in host defense mechanisms,maintaining epithelial cell integrity, glycoprotein synthesis,transport mechanisms, myocardial contractility, brain development, cholesterol and glucose metabolism. In this paper Hpyloriinfection in associaed with various micronutrients deficiencies is briefly reviewed.Javed Yakoob Wasim Jafri Shahab Abid 2003World Journal of Gastroenterology2003,9,10:7
11Prevalence of non-Helicobacter pylori duodenal ulcer in Karachi,Pakistan显示文摘AIM: To determine the prevalence of non-Helicobacter pylori (H pylori)-related duodenal ulcer in patients with acid-peptic diseases.METHODS: Medical records of patients who attended the Gastroenterology Department at Aga Khan University Hospital from 1999 to 2001 and had endoscopic diagnosis of duodenal ulcers were reviewed. Duodenal ulcer associated with H pylori was diagnosed on the basis of endoscopy,rapid urease test and histopathology whereas histories of aspirin or other non-steroidal anti-inflammatory drugs (NSAIDs) related duodenal ulcers. Non-H pylori, non-NSAID duodenal ulcers were those without H pylori infection and history of NSAID intake. Co-morbid conditions associated were noted.RESULTS: Of 2 260 patients, 10% (217/2 260) had duodenal ulcer. Duodenal ulcer related to H pylori infectionaccounted for 53% (116/217), NSAID-related 10% (22/217),non-H pylori non-NSAID 29% (62/217), and 8% (17/217) had both Hpyloriinfection and histories of NSAID intake. Fifteen percent (18/116)_patients had past histories of peptic ulcer disease in Hpyloriinfection, while 8% (5/62) in non-Hpylorinon-NSAID ulcer. Co-morbid conditions in H pylori infection were seen in 23% (27/116) and 34%(21/62) in non-H pylori non-NSAID ulcer.CONCLUSION: Incidence of H pylori infection related with duodenal ulcer is common. In the presence of co-morbids, non-Hpyloriand non-NSAID duodenal ulcer is likely to be present.Javed Yakoob Wasim Jafri Nadim Jafri Muhammad Islam Shahab Abid Saeed Hamid Hasnain AliShah Hizbullah Shaikh 2005World Journal of Gastroenterology2005,11,23:6
12Asian-Pacific consensus statement on the management of chronic hepatitis B: a 2012 update显示文摘Yun-Fan Liaw Jia-Horng Kao Teerha Piratvisuth Henry Chan Rong-Nan Chien Chun-Jen Liu Ed Gane Stephen Locarnini Seng-Gee Lim Kwang-Hyub Han Deepak Amarapurkar Graham Cooksley Wasim Jafri Rosmawati Mohamed Jin-Lin Hou Wan-Long Chuang Laurentius Lesmana Jose 2012Hepatology International2012,,3:6
13Hepatitis D: Scenario in the Asia-Pacifi c region显示文摘Hepatitis D virus (HDV) infection is present worldwide and affects all age groups. Around 18 million people are estimated to be infected with HDV. An important trend in HDV infection is global decline. HDV prevalence has decreased significantly in Europe since the 1970s and 1980s when it was f irst reported. The Asia-Pacif ic region now seems to be where HDV is a major health concern. There is a lack of available data from most of the countries from this region; hence, the true status of HDV cannot be determined. In South Asia, most of the countries have conditions that are favorable for the spread of hepatitis B and other related infections. Countries like Pakistan and Iran have shown an increase in HDV prevalence over a period of time. Other countries and region like China, Turkey, Australia, Japan, India and Taiwan, some of which had very high HDV prevalence in the past, have shown a decline in the incidence, but high prevalence persists in some. Intravenous drug abusers, homosexual men and women, prostitutes, and people on hemodialysis are the groups with very high HDV prevalence.Zaigham Abbas Wasim Jafri Sajjad Raza 2010World Journal of Gastroenterology2010,16,5:6
14Itopride for gastric volume,gastric emptying and drinking capacity in functional dyspepsia显示文摘AIM To study the effect of itopride on gastric accommodation, gastric emptying and drinking capacity in functional dyspepsia(FD). METHODS Randomized controlled trial was conducted to check the effect of itopride on gastric accommodation, gastric emptying, capacity of tolerating nutrient liquid and symptoms of FD. We recruited a total of 31 patients having FD on the basis of ROME III criteria. After randomization, itopride was received by 15 patients while 16 patients received placebo. Gastric accommodation was determined using Gastric Scintigraphy. ^(13) C labeled octanoic breadth test was performed to assess gastric emptying. Capacity of tolerating nutrient liquid drink was checked using satiety drinking capacity test. Theintervention group comprised of 150 mg itopride. Patients in both arms were followed for 4 wk. RESULTS Mean age of the recruited participant 33 years(SD = 7.6) and most of the recruited individuals, i.e., 21(67.7%) were males. We found that there was no effect of itopride on gastric accommodation as measured at different in volumes in the itopride and control group with the empty stomach(P = 0.14), at 20 min(P = 0.38), 30 min(P = 0.30), 40 min(P = 0.43), 50 min(P = 0.50), 60 min(P = 0.81), 90 min(P = 0.25) and 120 min(P = 0.67). Gastric emptying done on a sub sample(n = 11) showed no significant difference(P = 0.58) between itopride and placebo group. There was no significant improvement in the capacity to tolerate liquid in the itopride group as compared to placebo(P = 0.51). Similarly there was no significant improvement of symptoms as assessed through a composite symptom score(P = 0.74). The change in QT interval in itopride group was not significantly different from placebo(0.10). CONCLUSION Our study found no effect of itopride on gastric accommodation, gastric emptying and maximum tolerated volume in patients with FD.Shahab Abid Wasim Jafri Maseeh Uz Zaman Rakhshanda Bilal Safia Awan Aamir Abbas 2017World Journal of Gastrointestinal Pharmacology and Therapeutics2017,8,1:6
15Validity and cost comparison of ^(14)carbon urea breath test for diagnosis of H Pylori in dyspeptic patients显示文摘AIM: To validate and compare the cost of microdose 14C urea breath test (UBT) with histology and rapid urease test for the diagnosis of H Pylori. METHODS: Ninety-four consecutive patients with dyspeptic symptoms undergoing gastroscopy were enrolled. Gastric biopsies were taken for histology and rapid urease test. UBT was performed after gastroscopy by microdose 14C urea capsules. Sensitivity, specificity and accuracy of UBT were calculated and compared with histology and rapid urease test. Cost comparison of these tests was also performed. RESULTS: H pylori was diagnosed by histology and rapid urease test in 66 (70%) and 61 (65%) patients, while 14C UBT detected infection in 63 (67%). Accuracy of UBT was 93% in comparison with histology while its positive and negative predictive values were 97% and 84%, respectively. Comparison of 14C UBT with rapid urease test gives an accuracy of 96%, with positive and negative predictive values of 95% and 97%, respectively. These results were highly reproducible with a Kappa test (P value < 0.001). Cost of histology or rapid urease test with gastroscopy was 110 USD or 95 USD respectively while the cost of UBT was 15 USD. CONCLUSION: Microdose 14C UBT was comparable to histology and rapid urease test. 14C UBT is an economical, self sufficient and suitable test to diagnose active H pylori infection in less developed countries.Shahid Rasool Shahab Abid Wasim Jafri 2007World Journal of Gastroenterology2007,13,6:5
16Gastric juice for the diagnosis of H pylori infection in patients on proton pump inhibitors显示文摘AIM: To determine the efficacy of gastric juice polymerase chain reaction (PCR) for the detection of H pylori infection in comparison with histology and gastric antral biopsy PCR in patients on a proton pump inhibitor (PPI). METHODS: Eighty-five consecutive patients with dyspeptic symptoms were enrolled. Gastric biopsies for histology, PCR and gastric juice were collected at endoscopy for PCR of the H pylori urease C gene (ure C). Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), accuracy, positive and negative likelihood ratio for PCR of gastric juice for the H pylori ure C gene was compared to histology and gastric antral biopsy H pylori ure C PCR in patients with and without PPI. RESULTS: Gastric juice PCR was positive in 66 (78%) patients. Histology showed H pylori associated gastritis in 57 (67%). Gastric biopsy PCR was positive in 72 (85%). In patients not taking PPI, the sensitivity, specificity, PPV, NPV, accuracy and positive and negative likelihood ratio for gastric juice PCR were 89%, 72%, 91%, 67%, 90%, 85%, 3.1 and 0.1 respectively. In patients on PPI these values were 86%, 100%%, 100%, 29%, 86%, 9.5 and 1.4, respectively. CONCLUSION: Gastric juice PCR for the diagnosis of H pylori infection has increased sensitivity compared to histology with PPI. The use of gastric juice PCR is recommended to confirm H pylori status in patients taking PPIs.Javed Yakoob Shahid Rasool Zaigham Abbas Wasim Jafri Shahab Abid Muhammad Islam Zubair Ahmad 2008World Journal of Gastroenterology2008,14,10:4
17Are serum leptin levels predicted by lipoproteins, vitamin D and body composition?显示文摘BACKGROUND Both obesity and vitamin D deficiency are important health issues in Pakistan.The connection between body composition, Vitamin D and leptin in young adults is important to be studied as body composition may affect bone health and therefore the possibility of osteoporosis in later life. Few studies have attempted to investigate the effect of body composition and leptin with vitamin D in adolescence.AIM To investigate the association of serum leptin with body composition, lipids and25-hydroxyvitamin D(25 OHD) in adults.METHODS This cross-sectional study was conducted on 167 apparently healthy adults.Demographics were recorded, bioelectrical impedance analysis was performed and clinical history noted. Serum leptin was measured using DIA source kit on ELISA and total 25 OHD was measured on ADVIA-Centaur; Siemens. Total cholesterol and high density lipoprotein cholesterol were quantified using Enzymatic Endpoint Method and Cholesterol Oxidase-Phenol Aminophenazone method respectively. Biochemical analysis was done in the Departments of Pathology and Laboratory Medicine and Biological and Biomedical Sciences, Aga Khan University Hospital Karachi Pakistan.RESULTS Median age of the group(n = 167) was 20 years(IQR 27-20); 55.7% were females.Majority(89.2%, n = 149) of the study group was 25 OHD deficient, 6%(n = 10)had insufficient serum 25 OHD levels and 4.8%(n = 8) had sufficient D levels.Females, had higher median leptin levels [2.71(IQR 4.76-1.66 ng/mL)] compared to their counterparts [1.3(3.60-0.54 ng/mL), P < 0.01]. Multiple regression analysis suggested that basal metabolic rate, muscle mass, body fat percent, bone mass and serum 25 OHD were the most contributing factors to serum leptin levels. Bone mass and serum 25 OHD in fact bore a negative correlation with leptin.CONCLUSION The results indicate that basal metabolic rate, muscle mass, body fat percent, bone mass and serum 25 OHD have an impact on serum leptin. Being a cross sectional study causal relationship between leptin and other variables could not be determined.Aysha Habib Khan Syeda Sadia Fatima Ahmed Raheem Lena Jafri 2019World Journal of Diabetes2019,10,4:4
18Clinical presentation and genotype of hepatitis delta in Karachi显示文摘AIM: To assess the clinical presentation and genotypes of delta hepatitis in local population. METHODS: In this prospective study, 39 consecutive patients who were positive for HBsAg and hepatitis D virus (HDV) antibody were included. The patients were divided in two groups on the basis of presence or absence of HDV RNA and a comparative study was done. Genotype of HDV was determined in PCR positive patients. RESULTS: Overall there is male dominance, in which 34 patients out of 39 (87.2%) were male. Twenty (51%) patients were from the adjacent areas of three provinces; Sindh, Punjab and Balochistan indicating the higher prevalence of delta hepatitis in this mid region of Pakistan. Patients of all age groups were affected with delta hepatitis (median 31.5 years, range 12-75). HDV RNA was detectable in 23 patients (59%). All the HDV strains belonged to genotypeⅠ. HBV DNA was detectable only in 3 cases who were also HBeAg and HDV RNA positive. Patients with detectable HDV RNA were younger than patients with undetectable RNA; mean age 29.7 ± 12.8 years vs 36.8 ± 15.2. There were no statistically significant differences in the clinical presentation and routine biochemical profile of patients with detectable or undetectable HDV RNA. Clinical cirrhosis was present in 19 (49%) patients; 12 with detectable RNA and 7 with undetectable HDV RNA (P = 0.748). Decompensated disease was seen in eight patients; five and three respectively from each group. Four patients with undetectable RNA and two patients with detectable RNA had normal ALT and ultrasound abdomen. CONCLUSION: HDV may infect at any age, usuallyyoung adult males. GenotypeⅠ is prevalent. With time some of the patients become HDV RNA negative or asymptomatic carrier. Most of the patients have suppressed HBV DNA replication. Significant numbers of patients have cirrhosis.Tariq Moatter Zaigham Abbas Sabhita Shabir Wasim Jafri 2007World Journal of Gastroenterology2007,13,18:3
19APASL consensus statements and management algorithms for hepatitis C virus infection显示文摘Masao Omata Tatsuo Kanda Ming-Lung Yu Osamu Yokosuka Seng-Gee Lim Wasim Jafri Ryosuke Tateishi Saeed S. Hamid Wan-Long Chuang Anuchit Chutaputti Lai Wei Jose Sollano Shiv Kumar Sarin Jia-Horng Kao Geoffrey W. McCaughan 2012Hepatology International2012,,2:3
20Substrate-decoupled,bulk-acoustic wave gyroscopes:Design and evaluation of next-generation environmentally robust devices显示文摘This paper reports on a new type of high-frequency mode-matched gyroscope with significantly reduced dependencies on environmental stimuli such as temperature,vibration,and shock.A novel stress-isolation system is used to effectively decouple an axis-symmetric bulk-acoustic wave(BAW)vibratory gyro from its substrate,minimizing the effect that external sources of error have on the offset and scale factor of the device.Substrate-decoupled(SD)BAW gyros with a resonance frequency of 4.3 MHz and Q values near 60000 were implemented using the high aspect ratio poly and single-crystal silicon(HARPSS)process to achieve ultra-narrow capacitive gaps.Wafer-level packaged sensors were interfaced with a customized application-specific integrated circuit(ASIC)to achieve low variations in the offset across temperature(±26°s^(−1) from−40 to 85℃),supreme random-vibration immunity(0.012°s^(−1) gRMS−1)and excellent shock rejection.With a scale factor of 800μV(°s^(−1))^(−1),the SD-BAW gyro system attains a large full-scale range(±1250°s^(−1))with a non-linearity of less than 0.07%.A measured angle-random walk(ARW)of 0.39°/√h and a bias instability of 10.5°h^(−1) are dominated by the thermal and flicker noise of the integrated circuit(IC),respectively.Additional measurements using external electronics show bias-instability values as low as 3.5°h−1,which are limited by feed-through signals coupled from the drive loop to the sense channel,which can be further reduced through proper re-routing of the gyroscope pin-out configuration.Diego E.Serrano Mohammad F.Zaman Amir Rahafrooz Peter Hrudey Ron Lipka Duane Younkin Shin Nagpal Ijaz Jafri Farrokh Ayazi 2016Microsystems & Nanoengineering2016,2,1:3
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