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European Journal of Clinical... Feb 2024Calprotectin is a calcium-binding-S100-protein synthetized mainly in neutrophils which has been demonstrated to be an accurate biomarker of the presence of these cells.... (Review)
Review
BACKGROUND
Calprotectin is a calcium-binding-S100-protein synthetized mainly in neutrophils which has been demonstrated to be an accurate biomarker of the presence of these cells. Gut barrier dysfunction in patients with advanced chronic liver disease (ACLD), in addition to the lack of noninvasive tools for diagnosis and prognosis of cirrhosis decompensations, has raised interest in this biomarker.
AIMS
Our aim is to summarize the current evidence regarding the role of calprotectin in terms of its diagnostic and prognostic utility in ACLD.
METHODS
We performed a systematic search (PROSPERO registration no. CRD42023389069) of original articles published without any restrictions on the publication date until January 2023 providing information about calprotectin for the prognosis or diagnosis of ACLD and its decompensations in adult patients.
RESULTS
A total 227 articles were identified, and 26 observational studies finally met the inclusion criteria. In 14 studies, calprotectin was measured in ascitic fluid, all of which reported higher calprotectin values in spontaneous bacterial peritonitis, while cut-off points for its diagnosis were proposed in nine studies. Three studies reported higher faecal calprotectin levels in patients with hepatic encephalopathy and portal hypertension. Four studies evaluated faecal calprotectin and one plasma calprotectin as biomarkers for gut barrier integrity and bacterial translocation.
CONCLUSIONS
Calprotectin is emerging as a promising biomarker in ACLD, particularly for the management of bacterial infections and alcohol-related liver disease. Further research with better study designs should help to determine the feasibility of calprotectin measurement in routine clinical practice.
Topics: Adult; Humans; Biomarkers; Hypertension, Portal; Leukocyte L1 Antigen Complex; Liver Cirrhosis; Prognosis
PubMed: 37849372
DOI: 10.1111/eci.14111 -
The British Journal of Surgery Jul 2001How precise and reliable is ultrasonography as a primary tool for injury assessment in blunt abdominal trauma? (Review)
Review
BACKGROUND
How precise and reliable is ultrasonography as a primary tool for injury assessment in blunt abdominal trauma?
METHODS
A systematic review and meta-analysis were conducted of prospective clinical trials of ultrasonography for blunt abdominal trauma. Publications were retrieved by structured searching among databases, review articles and major text books. Authors and experts in the field were contacted for original and unpublished data. For statistical analysis, summary receiver operating characteristic curves (SROCs) were computed using weighted and robust regression models, with Q* denoting the shoulder of the curve. Post-test probabilities were calculated as a function of pooled likelihood ratios (LRs).
RESULTS
Thirty of 123 trials enrolling 9047 patients were eligible for final analysis. With respect to targeting organ lesions, ultrasonography showed a summary Q* value of 0.91 (inverse variance weights, 95 per cent confidence interval (c.i.) 0.76-1.07); negative predictive values ranged from 0.72 to 0.99. A similar SROC slope was calculated for screening for free fluid (Q* = 0.89 (95 per cent c.i. 0.73-1.05)). Ultrasonography detects the presence of organ lesions, but fails to exclude abdominal injuries (random effects negative LR 0.23 (95 per cent c.i. 0.18-0.28)). Given a pretest probability of 50 per cent for blunt abdominal injury, a post-test probability of nearly 25 per cent remains in the case of a negative sonogram.
CONCLUSION
Despite its high specificity, ultrasonography has an unexpectedly low sensitivity for the detection of both free fluid and organ lesions. In clinically suspected abdominal trauma, another assessment (e.g. helical computed tomography) must be performed regardless of the initial ultrasonographic findings.
Topics: Abdominal Injuries; Ascitic Fluid; Clinical Trials as Topic; Emergencies; Humans; Prospective Studies; Sensitivity and Specificity; Ultrasonography; Wounds, Nonpenetrating
PubMed: 11442520
DOI: 10.1046/j.0007-1323.2001.01777.x -
Gastroenterology Research and Practice 2014Introduction. Large volume paracentesis is considered a safe procedure carrying minimal risk of complications and rarely causing morbidity or mortality. The most common... (Review)
Review
Introduction. Large volume paracentesis is considered a safe procedure carrying minimal risk of complications and rarely causing morbidity or mortality. The most common complications of the procedure are ascitic fluid leakage, hemorrhage, infection, and perforation. The purpose of this study was to evaluate all hemorrhagic complications and their outcomes and to identify any common variables. Methods. A literature search for all reported hemorrhagic complications following paracentesis was conducted. A total of 61 patients were identified. Data of interest were extracted and analyzed. The primary outcome of the study was 30-day mortality, with secondary endpoints being achievement of hemostasis after intervention and mortality based on type of intervention. Results. 90% of the patients undergoing paracentesis had underlying cirrhosis. Three types of hemorrhagic complications were identified: abdominal wall hematomas (52%), hemoperitoneum (41%), and pseudoaneurysm (7%). Forty percent of the patients underwent either a surgical (35%) or an IR guided intervention (65%). Patients undergoing a surgical intervention had a significantly higher rate of mortality at day 30 compared to those undergoing IR intervention. Conclusion. Abdominal wall hematomas and hemoperitoneum are the most common hemorrhagic complications of paracentesis. Transcatheter coiling and embolization appear to be superior to both open and laparoscopic surgery in treatment of these complications.
PubMed: 25580114
DOI: 10.1155/2014/985141 -
Human Reproduction (Oxford, England) Feb 2014Can we use chemokines as biomarkers to diagnose patients with endometriosis in clinical practice? (Review)
Review
STUDY QUESTION
Can we use chemokines as biomarkers to diagnose patients with endometriosis in clinical practice?
SUMMARY ANSWER
Some chemokines, especially CXCL8 (IL-8), CCL-2 (MCP-1) and CCL5 (RANTES), have the potential to work as biomarkers to identify patients with endometriosis but their accuracy could be improved by combination with other non-inflammatory markers in a panel of biomarkers.
WHAT IS ALREADY KNOWN
The need for a good marker to diagnose endometriosis has increased in recent years and research in this field has intensified. Chemokines have been reported to be associated with endometriosis in several studies over the last 20 years. Many of these studies measured one or more chemokines in peritoneal fluid (PF) and peripheral blood (PB) or through endometrial biopsies in patients with and without endometriosis.
STUDY DESIGN, SIZE, DURATION
A systematic review was done on all published studies that compared chemokine concentrations in patients with and without endometriosis to evaluate their potential as biomarkers for the disease.
PARTICIPANTS/MATERIALS, SETTING, METHODS
Using MEDLINE database from December 1993 to August 2013 and the MeSH terms 'Endometriosis' and 'Chemokines', we identified relevant studies to include in the present review, which was based on the PRISMA statement. Studies that measured at least one chemokine in patients with endometriosis and matching controls in PB, PF or endometrial samples were included. We did not include samples from ectopic lesions. All review articles as well as studies with animals and those not written in English were excluded from this systematic review. The studies were assessed using a modified version of the Quality Assessment of Diagnostic Accuracy Studies criteria. Two authors independently assessed studies for inclusion and risk of bias, and extracted data.
MAIN RESULTS AND THE ROLE OF CHANCE
After inclusion and exclusion criteria, 62 studies were selected to be included in this systematic review. A total of 27 different chemokines or their receptors were evaluated in the reviewed studies. The most studied chemokines (including their receptors) were CXCL8 (51.6%), CCL2 (38.7%) and CCL5 (19.3%) (% of studies). CXCL8 (IL-8) appears to have the best results among all the other chemokines as a marker for endometriosis.
LIMITATIONS, REASONS FOR CAUTION
Some studies included have low power due to small sample size and study designs vary in the assessment criteria for the markers, the state of the patients (e.g. phase of the cycle and stage of disease) and the nature of the controls.
WIDER IMPLICATIONS OF THE FINDINGS
Our findings could guide future research in this field to select the chemokines with the best potential, and to stimulate better-designed studies to determine whether they can become a useful diagnostic tool in clinical practice.
STUDY FUNDING/COMPETING INTEREST(S)
There was no funding to support this systematic review. The authors have no competing interest to declare.
Topics: Ascitic Fluid; Biomarkers; Chemokine CCL2; Chemokine CCL5; Chemokines; Endometriosis; Endometrium; Female; Humans; Inflammation; Interleukin-8
PubMed: 24287816
DOI: 10.1093/humrep/det401 -
Alimentary Pharmacology & Therapeutics Oct 2005The peritoneum is one of the most common extrapulmonary sites of tuberculous infection. Peritoneal tuberculosis remains a significant problem in parts of the world where... (Review)
Review
The peritoneum is one of the most common extrapulmonary sites of tuberculous infection. Peritoneal tuberculosis remains a significant problem in parts of the world where tuberculosis is prevalent. Increasing population migration, usage of more potent immunosuppressant therapy and the acquired immunodeficiency syndrome epidemic has contributed to a resurgence of this disease in regions where it had previously been largely controlled. Tuberculous peritonitis frequently complicates patients with underlying end-stage renal or liver disease that further adds to the diagnostic difficulty. The diagnosis of this disease, however, remains a challenge because of its insidious nature, the variability of its presentation and the limitations of available diagnostic tests. A high index of suspicion is needed whenever confronted with unexplained ascites, particularly in high-risk patients. Based on a systematic review of the literature, we recommend: tuberculous peritonitis should be considered in the differential diagnosis of all patients presenting with unexplained lymphocytic ascites and those with a serum-ascites albumin gradient (SAAG) of <11 g/L; culture growth of Mycobacterium of the ascitic fluid or peritoneal biopsy as the gold standard test; further studies to determine the role of polymerase chain reaction, ascitic adenosine deaminase and the BACTEC radiometric system for acceleration of mycobacterial identification as means of improving the diagnostic yield; increasing utilization of ultrasound and computerized tomographic scan for the diagnosis and as a guidance to obtain peritoneal biopsies; low threshold for diagnostic laparoscopy; treatment for 6 months with the first-line antituberculous drugs (isoniazid, rifampicin, ethambutol and pyrazinamide) in uncomplicated cases.
Topics: Adolescent; Adult; Algorithms; Antitubercular Agents; Female; Humans; Laparoscopy; Male; Peritonitis, Tuberculous; Tomography, X-Ray Computed
PubMed: 16197489
DOI: 10.1111/j.1365-2036.2005.02645.x -
Acta Gastro-enterologica Belgica Dec 2014There is a common misconception that malignant ascites is equivalent to peritoneal carcinomatosis. It seems that malignancy-related ascites is a more appropriate... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND AND STUDY AIMS
There is a common misconception that malignant ascites is equivalent to peritoneal carcinomatosis. It seems that malignancy-related ascites is a more appropriate description of malignant ascites, which is difficult to confirm. Carcinoembryonic antigen, a glycoprotein tumor marker shed by malignant cells, increases in a wide range of gastrointestinal malignancies. We carried out the current meta-analysis to determine carcinoembryonic antigen accuracy in the diagnosis of malignancy-related ascites.
PATIENTS AND METHODS
Pubmed/Medline and SCOPUS were searched using these search terms: malignan* AND ascites AND (CEA OR carcinoembryonic). The outcome of interest was carcino-embryonic antigen accuracy in the differentiation of malignancy-related ascites and nonmalignant ascites.
RESULTS
Seven studies were included in this systematic review. Pooled diagnostic indices using random-effects model were as follows: sensitivity 43.1% [381-48.3]; specificity 95.5% [93-97.3]; LR+ (positive likelihood ratio) 7.33 [4.58-11.73]; LR- (negative likelihood ratio) 0.6 [0.54-0.68]; and DOR (diagnostic odds ratio) 12.93 [7.58-22].
CONCLUSIONS
Carcinoembryonic antigen of the ascitic fluid does not seem to be sensitive enough to diagnose malignancy-related ascites. However, due to high specificity, the positive predictive value of this marker is high and the higher the level of carcino-embryonic antigen, the more likely it is to be malignancy-related. Nevertheless, a negative test result cannot definitely rule out the malignancy.
Topics: Ascites; Ascitic Fluid; Carcinoembryonic Antigen; Humans; Liver Neoplasms; Peritoneal Neoplasms
PubMed: 25682632
DOI: No ID Found -
The Cochrane Database of Systematic... Jul 2007The main reasons for inserting a drain after elective liver resections are (i) prevention of sub-phrenic or sub-hepatic fluid collection; (ii) identification and... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
The main reasons for inserting a drain after elective liver resections are (i) prevention of sub-phrenic or sub-hepatic fluid collection; (ii) identification and monitoring of post-operative bleeding; (iii) identification and drainage of any bile leak; and (iv) prevent the accumulation of ascitic fluid in cirrhotics. However, there are reports that drain use increases the complication rates.
OBJECTIVES
To assess the benefits and harms of routine abdominal drainage in elective liver resections.
SEARCH STRATEGY
We searched The Cochrane Hepato-Biliary Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library, MEDLINE, EMBASE, and Science Citation Index Expanded until March 2007.
SELECTION CRITERIA
We included all randomised trials comparing abdominal drainage and no drainage in adults undergoing elective liver resection. We also included randomised trials comparing different types of drain in adults undergoing elective liver resection.
DATA COLLECTION AND ANALYSIS
We collected the data on the characteristics of the trial, methodological quality of the trials, mortality, morbidity, conversion rate, operating time, and hospital stay from each trial. We analysed the data with both the fixed-effect and the random-effects models using the Cochrane Collaboration statistical software RevMan Analysis. For each outcome we calculated the odds ratio (OR) with 95% confidence intervals (CI) (based on intention-to-treat analysis) by combining the trial data sets using fixed-effect model or random-effects model, as appropriate.
MAIN RESULTS
Drain versus no drain: We included five trials with 465 patients randomised: 234 to the drain group and 231 to the no drain group. Three of the five trials were of high methodological quality. There was no statistically significant difference between the two groups for any of the outcomes (mortality, intra-abdominal collections requiring re-operation, infected intra-abdominal collections, wound infection, ascitic leak, and hospital stay, when the random-effects model was adopted. Open drain versus closed drain: One randomised clinical trial of low methodological quality comparing open with closed drainage (186 patients) showed a lower incidence of infected intra-abdominal collections, chest complications, and hospital stay in the closed drain group.
AUTHORS' CONCLUSIONS
There is no evidence to support routine drain use after uncomplicated liver resections.
Topics: Abdomen; Drainage; Hepatectomy; Humans; Postoperative Complications; Randomized Controlled Trials as Topic
PubMed: 17636837
DOI: 10.1002/14651858.CD006232.pub2 -
International Journal of Colorectal... Jul 2017Anastomotic leak (AL) in colorectal surgery leads to significant morbidity, mortality and poorer oncological outcomes. Diagnosis of AL is frequently delayed as current... (Meta-Analysis)
Meta-Analysis Review
PURPOSE
Anastomotic leak (AL) in colorectal surgery leads to significant morbidity, mortality and poorer oncological outcomes. Diagnosis of AL is frequently delayed as current methods of detection are not 100% sensitive or specific. 'Biomarkers', such as cytokines and markers of ischaemia, from the milieu of the anastomosis may aid early detection. This paper aims to review the evidence for their role in AL detection, allowing identification of targets for future research.
METHODS
A systematic review was performed using PubMed, MEDLINE and Cochrane Library databases. Papers concerning detection or prediction of AL with biomarkers were identified. References within the papers were used to identify further relevant articles.
RESULTS
Research has taken place in small cohorts with varying definitions of AL. Lactate has consistently been shown to be elevated in patients with intra-abdominal complications and ALs. pH on post-operative day 3 showed excellent specificity. Despite mixed results, a meta-analysis found that the cytokines tumour necrosis factor-α and interleukin-6 were elevated early in AL. Detection of bacteria in drain fluid by RT-PCR has good specificity but a high rate of false positives.
CONCLUSIONS
Peritoneal cytokines, lactate and pH have the potential to identify AL early. The consistency of the results for lactate and pH, alongside the fact that they are easy, quick and inexpensive to test, makes them the most attractive targets. Studies in larger cohorts with standardized definitions of AL are required to clarify their usefulness. Emerging biosensor technology may facilitate the development of small, low-cost and degradable intra-abdominal devices to measure peritoneal fluid biomarkers.
Topics: Anastomotic Leak; Ascitic Fluid; Biomarkers, Tumor; Colorectal Neoplasms; Cytokines; Humans; Inflammation; Ischemia
PubMed: 28401350
DOI: 10.1007/s00384-017-2799-3 -
Journal of Clinical Gastroenterology Sep 2006Adenosine deaminase (ADA) levels are used for diagnosing tuberculosis in several locations and although many studies have evaluated ADA levels in ascitic fluid. These... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND AND GOALS
Adenosine deaminase (ADA) levels are used for diagnosing tuberculosis in several locations and although many studies have evaluated ADA levels in ascitic fluid. These studies have defined arbitrary cut-off points creating difficulties in the clinical application of the results. The goals of this study are: to determine the usefulness of ADA levels in ascitic fluid as a diagnostic test for peritoneal tuberculosis (PTB) and define the best cut-off point.
STUDY
A systematic review was done on the basis of 2 independent searches. We selected prospective studies that included consecutive patients. Diagnosis of PTB had to be confirmed by bacteriologic or histologic methods and ADA levels determined by the Giusti method. Inclusion/exclusion criteria were applied by 2 independent reviewers. A receiver operating characteristic curve was constructed to establish the optimal cut-off point and the likelihood ratios (LRs) estimated using fixed-effect pooled method.
RESULTS
Twelve prospective studies were found. Four of them met the inclusion criteria and were thus included in the meta-analysis. They included 264 patients, of which 50 (18.9%) had PTB. ADA levels showed high sensitivity (100%) and specificity (97%) using cut-off values from 36 to 40 IU/L. The included studies were homogeneous. Optimal cut-off point was determined at 39 IU/L, and LRs were 26.8 and 0.038 for values above and below this cut-off.
CONCLUSIONS
This study supports the proposition that ADA determination is a fast and discriminating test for diagnosing PTB with an optimal cut-off value of 39 IU/L.
Topics: Adenosine Deaminase; Ascitic Fluid; Clinical Enzyme Tests; Humans; Peritonitis, Tuberculous; Prospective Studies; ROC Curve; Sensitivity and Specificity
PubMed: 16940883
DOI: 10.1097/00004836-200609000-00009 -
Human Fertility (Cambridge, England) Jun 2018Ovarian hyperstimulation syndrome (OHSS) is a potentially serious complication of assisted reproductive treatment. Management of women with severe OHSS has traditionally... (Review)
Review
Ovarian hyperstimulation syndrome (OHSS) is a potentially serious complication of assisted reproductive treatment. Management of women with severe OHSS has traditionally included hospitalisation for close monitoring and supportive treatment. The aim of this review is to assess the evidence for safety and efficacy of outpatient management of severe OHSS. A systematic review of studies describing outpatient management options was performed. Current guidance from advisory bodies was also reviewed. Outpatient management has been found in observational studies to be safe and cost-effective compared to inpatient management. Paracentesis of ascitic fluid seems to be effective treatment for severe OHSS along with supportive management including maintenance of fluid balance and preventative measures against thrombo-embolism. GnRH antagonist was shown in few studies to be effective in treatment of early severe OHSS although further research is required to assess its role in this context. Appropriate outpatient set up and protocols are essential to provide safe outpatient management for women with severe OHSS.
Topics: Female; Gonadotropin-Releasing Hormone; Hormone Antagonists; Humans; Outpatients; Ovarian Hyperstimulation Syndrome; Paracentesis; Practice Guidelines as Topic; Pregnancy; Treatment Outcome
PubMed: 28554223
DOI: 10.1080/14647273.2017.1331048