Anti-β2 Glycoprotein I Antibodies and Platelet Activation in Patients with Antiphospholipid Antibodies: Association with Increased Excretion of Platelet-Derived Thromboxane Urinary Metabolites

1998 ◽  
Vol 79 (01) ◽  
pp. 42-45 ◽  
Author(s):  
Ricardo Forastiero ◽  
Marta Martinuzzo ◽  
Jacques Maclouf ◽  
Luis Carreras
Keyword(s):  
Urinary Excretion ◽  
Platelet Activation ◽  
Antiphospholipid Antibodies ◽  
Glycoprotein I ◽  
Number Of Patients ◽  
Increased Risk ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Normal Controls

SummaryPlatelet activation may contribute to the increased risk of thrombotic complications in patients with antiphospholipid antibodies (aPL). The increased urinary excretion of 11-dehydro-thromboxane B2 (11-DH-TXB2) reported in patients with lupus anticoagulant (LA) and/or anticardiolipin antibodies (aCL) reflects in vivo platelet activation. However the majority of autoimmune aPL are directed to β2 glycoprotein I (β2GPI) or prothrombin (II). We investigated the relationship of these antibodies with 11-DH-TXB2 urinary excretion in 34 patients with aPL. The urinary 11-DH-TXB2 was measured by EIA after extraction on octadecyl columns and purification on silica gel columns, which was validated by thin-layer chromatography/EIA procedure. A significantly increased excretion of 11-DH-TXB2 was found in aPL patients as compared to 18 normal controls (p <0.01). But no differences were seen in the excretion of 11-DH-TXB2 between patients with or without LA, or aCL. The number of patients with anti-II antibodies was too small to draw any conclusion. In contrast, patients with anti-β2GPI antibodies IgG at moderate/high titre (group A, n = 14) had higher levels of urinary 11-DH-TXB2 than those at low titre or negative (group B, n = 20) (p = 0.01). The group A of patients presented an increase in 11-DH-TXB2 compared to controls (p <0.001), but no statistically significant difference was found between patients from the group B and normal controls. A correlation between levels of urinary 11-DH-TXB2 and titre of antibodies was only found for anti-β2GPI-IgG (rs = 0.51, p <0.005). Our data show that the observed platelet activation in aPL patients is related to the presence of antibodies reacting with β2GPI.

Risk of Damaging Anatomical Structures During Minimally Invasive Hallux Valgus Correction (Bösch Technique): An Anatomical Study

2018 ◽  
Vol 39 (11) ◽  
pp. 1355-1359 ◽  
Author(s):  
Martin Kaipel ◽  
Lukas Reissig ◽  
Lukas Albrecht ◽  
Stefan Quadlbauer ◽  
Joachim Klikovics ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Hallux Valgus ◽  
Complication Rate ◽  
Metatarsal Osteotomy ◽  
Anatomical Structures ◽  
Intensive Training ◽  
Increased Risk ◽  
Significant Difference ◽  
Group A ◽  
Group B

Background: Percutaneous, transverse distal metatarsal osteotomy with K-wire fixation (the Bösch technique) is an established technique for hallux valgus correction. Nevertheless, the risk of damaging the anatomical structures during the operation is unknown. Methods: Forty fresh-frozen anatomical foot specimens with hallux valgus deformity underwent a percutaneous corrective procedure. Specimens of group A (n = 20) were operated by an experienced surgeon while specimens of group B (n = 20) were done by untrained residents. Results: The dorsal cutaneous nerve was injured in 1 of 20 cases in group A and 6 of 20 cases in group B ( P = .037). There was a significant difference in overall complication rate between specimens of group A and group B ( P = .043). Conclusions: The results show an increased risk of perioperative injury of the dorsal cutaneous branch of the deep peroneal nerve as well as a significant effect of the surgeon’s experience on the overall complication rate. Clinical Relevance: Results of this study are highly relevant for all surgeons who perform percutaneous, minimally invasive hallux valgus surgery to avoid damage to the peripheral nerves. In addition, the data suggest an intensive training for surgeons before minimally invasive hallux valgus surgery is performed without supervision.

Urinary excretion of glycated protein determined with a specific radioimmunoassay

1991 ◽  
Vol 37 (4) ◽  
pp. 504-507 ◽  
Author(s):  
Chizuko Ukita ◽  
Mitsushige Nishikawa ◽  
Akira Shouzu ◽  
Mitsuo Inada
Keyword(s):  
Urinary Excretion ◽  
Normal Subjects ◽  
Mean Values ◽  
Specific Radioimmunoassay ◽  
Glycated Protein ◽  
Highly Sensitive ◽  
Significant Difference ◽  
Group A ◽  
The Mean ◽  
Group B

Abstract We developed a simple and highly sensitive RIA for glycated protein (GP), and used it to measure GP in serum and urine from 15 normal controls and 30 diabetics (14 with urinary excretion rate of albumin, Ualb less than 15 micrograms/min, group A; nine with 15 less than or equal to Ualb less than or equal to 150 micrograms/min, group B; and seven with Ualb greater than 150 micrograms/min, group C). The mean serum concentration of GP was above normal in all groups of diabetics, and the mean glycation ratios of serum protein (SGP) were higher in groups B and C than in normal subjects. Urinary concentrations of GP also were increased in groups B and C, although the glycation ratio of urinary protein (UGP) was decreased in group C. Consequently, the selectivity of urinary excretion of GP (UGP/SGP) was significantly decreased in group C. Moreover, there was a significant difference in the mean values of selectivity between groups of patients with various degrees of retinopathy. We suggest that measurements of serum and urinary GP are useful to evaluate the progression of diabetic complications.

The Effect of Combined Clopidogrel and Aspirin Therapy after Off-Pump Coronary Surgery

2009 ◽  
Vol 4 (5) ◽  
pp. 265-268 ◽  
Author(s):  
Emir Mujanovic ◽  
Midhat Nurkic ◽  
Jasmin Caluk ◽  
Ibrahim Terzic ◽  
Emir Kabil ◽  
...  
Keyword(s):  
Artery Bypass ◽  
Postoperative Bleeding ◽  
Median Sternotomy ◽  
Operation Time ◽  
Graft Patency ◽  
Off Pump ◽  
Number Of Patients ◽  
Significant Difference ◽  
Group A ◽  
Group B

Objective The purpose of this randomized study was to evaluate the effect on graft patency by adding clopidogrel to aspirin in off-pump coronary artery bypass (OPCAB) grafting and the possible side effects of such therapy. Methods Twenty patients who underwent standard OPCAB through median sternotomy were randomized immediately after surgery in two groups. Patients in group A (n = 10) received 100 mg of aspirin starting preoperatively, continuing indefinitely. Patients in group B received 100 mg of aspirin and, in addition, 75 mg of clopidogrel starting immediately after the operation and for 3 months. Postoperative bleeding and other perioperative parameters were compared. Angiography was repeated 3 months after surgery to determine the patency and quality of grafts. Results Preoperative risk factors were similar in the two groups. There was no significant difference in average number of distal anastomosis (P = 0.572), operation time (P = 0.686), postoperative bleeding (P = 0.256), ventilation time (P = 0.635), and intensive care unit stay (P = 0.065). Length of stay was shorter in group B (P = 0.024). There was no postoperative complication in either groups. Eight of 27 grafts in group A and 2 of 29 grafts in group B (P = 0.037) were occluded at the time of control angiography. Conclusions Early administration of a combined regimen of clopidogrel and aspirin after OPCAB grafting is not associated with increased postoperative bleeding or other major complications. Despite the small number of patients in this study and small number of examined grafts, the results suggest that the addition of clopidogrel may increase graft patency after OPCAB grafting.

Exercise-Induced Platelet Activation in Myocardial Infarction Survivors with Normal Coronary Arteriogram

1984 ◽  
Vol 52 (03) ◽  
pp. 297-300 ◽  
Author(s):  
Ph Douste-Blazy ◽  
P Sié ◽  
B Boneu ◽  
J Marco ◽  
N Eche ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Platelet Activation ◽  
Plasma Levels ◽  
Healthy Subjects ◽  
Venous Blood ◽  
Peak Exercise ◽  
Platelet Factor ◽  
Significant Difference ◽  
Group A ◽  
Group B

SummaryPlatelet activation may participate in the pathophysiology of myocardial infarction occurring in patients with normal coronary arteriogram. We investigated this possibility in a series of 9 such patients (group A) during a standardized bicycle excercise test as myocardial infarction had occurred in all of them during or soon after strong physical exercise. Twelve patients with effort-induced angina and coronary atherosclerosis (group B) and eleven healthy subjects (group C) served as test groups. Peripheral venous blood was collected by separate venipuncture before, at peak exercise and during recovery. As a sensitive index of activation, the shape of the circulating platelets was examined with a phase contrast microscope after instantaneous fixation of the whole blood. The percentage of non strictly disc-shaped platelets with one or more thin pseudopods was determined. Simultaneously, the plasma levels of platelet factor 4 (PF4) and of beta-thromboglobulin (β-TG) were measured. At rest, there was no significant difference in the platelet morphology nor in the plasma levels of platelet specific proteins between the three groups. During exercise, a significant change in platelet shape occurred in group A and B patients and not in the healthy subjects. This platelet activation was not related to myocardial ischemia since it occurred to a similar extent in group B patients who developed electrocardiographic changes and in group A patients who did not. There was no detectable release of platelet proteins during exercise in any group.

scholarly journals 1379. Comparison of Inpatient Tuberculosis Screening Methods and Their Effect on Patient Duration in Airborne Isolation

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S501-S501
Author(s):  
Mary Katherine. Theoktisto ◽  
Delvina Ford ◽  
Omar Khan ◽  
Kelly R Reveles ◽  
Jose Cadena
Keyword(s):  
Statistical Significance ◽  
Nucleic Acid Amplification ◽  
Health Concern ◽  
Smear Microscopy ◽  
Screening Methods ◽  
Number Of Patients ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Crude Analysis

Abstract Background Tuberculosis (TB) remains a significant public health concern, and exposure in healthcare settings is prevalent. Current guidelines recommend testing for TB by acid-fast bacilli (AFB) smear microscopy with 3 sputum samples and/or using nucleic acid amplification test (NAAT), and mycobacterium culture. The purpose of this project is to compare how different TB diagnostic tests affect the duration of stay in respiratory isolation. Methods This study was conducted at the Veteran Affairs South Texas hospital, which includes a total of 437 beds. Data were collected retrospectively from medical records. Eligibility included patients admitted to the hospital and placed in airborne isolation for TB screening and diagnosis, had 3 sputum samples collected 8 hours apart and/or had 2 PCR MTB/RIF. Patients were excluded if they had TB or were not undergoing evaluation for TB. Three time periods analyzed included, 3 AFB sputum samples analyzed in-house from December 2012 to January 2014 (Group A), 3 AFB sputum samples analyzed at outside facility during 2013 to 2014 as well as 2 months in 2012 (Group B), and 2 MTB PCR/RIF in house during 2017 and 2018 (Group C). Duration of isolation was compared between groups using the Kruskal–Wallis test. A total number of 815 patients were screened, leaving 105 patients for analysis after exclusion. There were 49 patients analyzed from Group A, 28 from Group B, and 28 from Group C. Results Crude analysis of the data showed numerical differences in the total number of days and hours in isolation between the 3 groups. The average (mean) days in isolation were 4.2 for Group A, 7.4 for Group B, and 5.5 for Group C. There was no statistically significant difference in either days or hours of airborne precautions by “rule out” method. Days of isolation in airborne precautions (median IQR) was 4 for all groups (P = 0.3313). Likewise, hours of airborne precautions had a median IQR of 96 for all groups P = 0.4347. Conclusion Although there was no statistical significance between the groups, crude analysis did show a numerical difference in the mean total airborne days and hours. Lack of statistical difference may be due to low number of patients, timing of order placement for in-house PCR, and longer than expected stay in airborne precautions. Disclosures All authors: No reported disclosures.

Comparison of Efficacy of I/V Tramadol and Bupivacaine Irrigation through Drains after Modified Radical Mastectomy

2021 ◽  
Vol 15 (11) ◽  
pp. 3007-3011
Author(s):  
Zarqa Rani ◽  
Iqra Mushtaq ◽  
Mehreen Akram ◽  
Zahra Ishrat
Keyword(s):  
Breast Cancer ◽  
Urinary Retention ◽  
Controlled Trial ◽  
Radical Mastectomy ◽  
Breast Cancer Surgery ◽  
Modified Radical Mastectomy ◽  
Increased Risk ◽  
Significant Difference ◽  
Group A ◽  
Group B

Background: Severe postsurgical pain continues to be hard to manage in patients who experience breast cancer surgery. Badly managed pain can lead to meager patient satisfaction, prolonged hospital stay, and increased risk of complication by analgesics, and may be a reason in the development of long-lasting pain. Aim: To compare the efficacy of Intravenous Tramadol and Bupivacaine irrigation through surgical drains after Modified Radical Mastectomy in patients with carcinoma breast. Methods: This was a randomized controlled trial conducted in the Department of Anesthesia, Mayo Hospital Lahore. Total 70 female patients aged 18-70 years undergoing radical mastectomy for CA breast diagnosed on histopathology were selected. Patients were divided into two groups A and B through simple random sampling technique. Group A received intravenous Tramadol. Group B received Bupivacaine through surgical drains. Results: At 0, 2, 4 and 6 hour postoperatively no significant difference was seen in severity of pain in both treatment groups. In Group-A at 0, 2, 4 and 6 hour postoperatively, 68.8%, 71.4%, 57.1% and 60% respectively had reported no pain while in Group-B at 0, 2, 4 and 6 hour postoperatively, 48.6%, 65.7%, 45.7% and 54.3% patients had reported no pain. Complaints of Nausea, vomiting, sedation, urinary retention was higher in patients in Tramadol Group as compared to Bupivacaine Group. Conclusion: Results of this study demonstrated that bupivacaine administrated through surgical drain was equally effective as intravenous tramadol for controlling postoperative mastectomy pain with less side effects. Keyword: Breast Cancer, Acute Pain, Analgesia, Tramadol, Bupivacaine, Radical Mastectomy, Nausea, Vomiting, Sedation, Urinary retention, Hypotension

Comparison of Alveolar Osteitis (AO) occurrence after impacted mandibular third molar removal with and without post-extraction socket irrigation

2021 ◽  
Vol 17 (3) ◽  
pp. 211-215
Author(s):  
Fatema Awan ◽  
Manahil Rahat ◽  
Muhammad Jamal ◽  
Saniya Sohail ◽  
Khalid Mahmood Siddiqi ◽  
...  
Keyword(s):  
Third Molar ◽  
Extraction Socket ◽  
Dry Socket ◽  
Number Of Patients ◽  
Mandibular Molar ◽  
Significant Difference ◽  
Alveolar Osteitis ◽  
Group A ◽  
Group B ◽  
Mandibular Third Molars

Objective: We wanted to see whether impacted third mandibular molar extractions resulted in Alveolar Osteitis if post-extraction socket irrigation was used or not. Methodology: A randomized control experiment on 70 patients study was conducted from July 2019 to January 2020 at Islamabad Dental Hospital's OMFS department. Patients presenting with the mandibular third molars fulfilling the inclusion criteria had their teeth extracted with and without socket irrigation using the computer lottery method. In cases of dry socket, clinical diagnosis was made between the 3rd, 5th, and 7th postoperative days. Results: 70 patients/sockets were evaluated with 35 having been irrigated and 35 non-irrigated. The age range was 16-50years with a mean of 29.49 and most patients were between the 16-35 age group. There were 48.6% males and 51.4% females. Dry Socket was evaluated on the 3rd, 5th, and 7th day between groups (A=irrigation, B=Non-irrigation). On the 3rd postop day, 14 (40%) patients in group A and 15(42.9%) patients were diagnosed as dry Sockets. A similar number of patients in both groups (20%) exhibited symptoms of dry socket on the fifth and seventh postoperative days, as did 5 (14.3 %) in group A, 3 (8.6 %) in group B, and 1(2.9 %t) in group A, all on the fifth postoperative day. Conclusion: On the third, fifth, and seventh postoperative days, there was no significant difference in the result of Alveolar Osteitis between the groups.

Correlation between antiphospholipid antibodies that recognize domain I of β2-glycoprotein I and a reduction in the anticoagulant activity of annexin A5

Blood ◽  
2006 ◽  
Vol 109 (4) ◽  
pp. 1490-1494 ◽  
Author(s):  
Bas de Laat ◽  
Xiao-Xuan Wu ◽  
Menno van Lummel ◽  
Ronald H. W. M. Derksen ◽  
Philip G. de Groot ◽  
...  
Keyword(s):  
Antiphospholipid Antibodies ◽  
Lupus Anticoagulant ◽  
Anticoagulant Activity ◽  
Annexin A5 ◽  
Anionic Phospholipids ◽  
Glycoprotein I ◽  
Group A ◽  
Group B ◽  
Domain I ◽  
American Authors

Abstract The paradoxical correlation between thrombosis and the lupus anticoagulant (LAC) effect is an enigmatic feature of the antiphospholipid (aPL) syndrome. The Dutch authors previously reported that thrombosis-related anti–β2-glycoprotein I (β2GPI) antibodies recognize domain I and cause LAC. The American authors reported that aPLs disrupt an anticoagulant annexin A5 (AnxA5) crystal shield. We investigated whether antidomain I antibodies correlate with disruption of AnxA5-anticoagulant activity. We studied a well-characterized group of 33 patients including subgroups with β2GPI-dependent LAC that recognize domain I (n = 11), with β2GPI-independent LAC (n = 12), and lacking LAC (n = 10). The effects on AnxA5-anticoagulant activity were determined with an AnxA5 resistance assay that measures coagulation times with and without AnxA5. Patients with β2GPI-dependent LAC (group A, all with thrombosis) had significantly lower AnxA5-anticoagulant ratios than those with β2GPI-independent LAC (group B, thrombosis n = 4; 157.8% versus 235.6%, P < .001) and those without LAC (group C, thrombosis n = 2; 157.8% versus 232.5%, P < .001). There was no difference in the ratios between groups B and C (P = .92). Plasmas with β2GPI-dependent LAC that recognize domain I displayed significantly increased AnxA5 resistance, suggesting that specifically anti-β2GPI antibodies compete with AnxA5 for anionic phospholipids. These results are consistent with a model in which aPL antibodies may promote thrombosis by interfering with the anticoagulant activity of AnxA5.

scholarly journals EP.TU.296A Significant Difference in Cancer Proportions Between Two Modelled Cohorts Investigated by 2-WeekWait (2WW) Colorectal referral pathway

2021 ◽  
Vol 108 (Supplement_7) ◽  
Author(s):  
A Gendia ◽  
A Tam ◽  
W Faux
Keyword(s):  
Colorectal Cancer ◽  
The Other ◽  
Cohort Group ◽  
Extracolonic Cancer ◽  
Number Of Patients ◽  
Significant Difference ◽  
Rectal Mass ◽  
Group A ◽  
Group B ◽  
The Given

Abstract Aim To compare the proportions of malignancy between two modelled cohorts of referred and investigated by our colorectal 2 WW referrals pathway. Methods Two modelled cohorts were analysed from our prospectively maintained colorectal 2WW referrals database from August 2018 to July 2019. One cohort (group A) included patients without anemia, rectal mass or overt rectal bleeding. The other (group B) included the rest of referrals. Data collected and analysed in each group included total numbers of referrals, investigated referrals and malignancy proportion in each group. One tailed Z test was used to analysis statistical difference. Results 4240 referrals were made to our colorectal 2 WW pathway during the given period. 1333 (31%) were group A and 2907 (69%) were group B. Total number of patients investigated in group A was 1227, of those only 34 (2.8%) were colorectal cancer and 18 (1.5%) were extracolonic cancer. One the other hand, 2705 patients were investigated in group B, colorectal malignancy were found in 142 (5.3%) patients and 33 (1.2%) were extracolonic. There was a significant difference (p &lt; 0.05) in total number of malignancies between Group A (53/4.3%) and Group B (175/6.5%). Conclusion While the 2 Week-Wait referral pathway plays an important role in rapid testing and identifying colorectal cancer, there was a difference between malignancy distribution within the referrals. this difference doesn’t reflect a clinical significance but it can be a good stratification tool.

scholarly journals Adequate timing of thromboembolic prophylaxis in colorectal cancer surgery

2018 ◽  
Vol 5 (2) ◽  
pp. 576
Author(s):  
Ghada Morshed ◽  
Nader Zaki
Keyword(s):  
Colorectal Cancer ◽  
Venous Thromboembolism ◽  
Prospective Study ◽  
Bleeding Complications ◽  
Thromboembolic Prophylaxis ◽  
Colorectal Cancer Surgery ◽  
Increased Risk ◽  
Significant Difference ◽  
Group A ◽  
Group B

Background: It has been found that patients with colorectal cancer are at increased risk for postoperative venous thromboembolism. The aim of this prospective study is to evaluate the incidence of venous thromboembolism and major bleeding complications in patients undergoing colorectal cancer who are treated with preoperative or postoperative venous thromboprophylaxis.Methods: This prospective study included 30 patients from September 2013 to November 2017. There were 22 males and 8 females; mean age was 66.7±5.5 years (range 44-78). Author divided the patients randomly into two groups (group A=15 cases with preoperative and group B = 15 cases with postoperative venous thromboprophylaxis).Results: There was no significant difference in preoperative versus postoperative thromboembolic prophylaxis regarding postoperative DVT 0/15(0%) vs 1/15 (6.6%), P=0.69, no bleeding complications and no pulmonary embolism.Conclusions: Preoperative and postoperative thromboembolic prophylaxis are equally safe in venous thromboembolism protection. 

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