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Nutrition Reviews Jul 2023Iron deficiency and anemia have serious consequences, especially for children and pregnant women. Iron salts are commonly provided as oral supplements to prevent and... (Meta-Analysis)
Meta-Analysis
The effects of oral ferrous bisglycinate supplementation on hemoglobin and ferritin concentrations in adults and children: a systematic review and meta-analysis of randomized controlled trials.
CONTEXT
Iron deficiency and anemia have serious consequences, especially for children and pregnant women. Iron salts are commonly provided as oral supplements to prevent and treat iron deficiency, despite poor bioavailability and frequently reported adverse side effects. Ferrous bisglycinate is a novel amino acid iron chelate that is thought to be more bioavailable and associated with fewer gastrointestinal (GI) adverse events as compared with iron salts.
OBJECTIVE
A systematic review and meta-analysis of randomized controlled trials (RCTs) was conducted to evaluate the effects of ferrous bisglycinate supplementation compared with other iron supplements on hemoglobin and ferritin concentrations and GI adverse events.
DATA SOURCES
A systematic search of electronic databases and grey literature was performed up to July 17, 2020, yielding 17 RCTs that reported hemoglobin or ferritin concentrations following at least 4 weeks' supplementation of ferrous bisglycinate compared with other iron supplements in any dose or frequency.
DATA EXTRACTION
Random-effects meta-analyses were conducted among trials of pregnant women (n = 9) and children (n = 4); pooled estimates were expressed as standardized mean differences (SMDs). Incidence rate ratios (IRRs) were estimated for GI adverse events, using Poisson generalized linear mixed-effects models. The remaining trials in other populations (n = 4; men and nonpregnant women) were qualitatively evaluated.
DATA ANALYSIS
Compared with other iron supplements, supplementation with ferrous bisglycinate for 4-20 weeks resulted in higher hemoglobin concentrations in pregnant women (SMD, 0.54 g/dL; 95% confidence interval [CI], 0.15-0.94; P < 0.01) and fewer reported GI adverse events (IRR, 0.36; 95%CI, 0.17-0.76; P < 0.01). We observed a non-significant trend for higher ferritin concentrations in pregnant women supplemented with ferrous bisglycinate. No significant differences in hemoglobin or ferritin concentrations were detected among children.
CONCLUSION
Ferrous bisglycinate shows some benefit over other iron supplements in increasing hemoglobin concentration and reducing GI adverse events among pregnant women. More trials are needed to assess the efficacy of ferrous bisglycinate against other iron supplements in other populations.
PROSPERO REGISTRATION NO
CRD42020196984.
Topics: Adult; Child; Female; Humans; Male; Pregnancy; Anemia, Iron-Deficiency; Dietary Supplements; Ferritins; Hemoglobins; Iron; Iron Deficiencies; Randomized Controlled Trials as Topic; Salts; Ferrous Compounds
PubMed: 36728680
DOI: 10.1093/nutrit/nuac106 -
The Turkish Journal of Gastroenterology... Sep 2023Previous studies have shown that hyperferritinemia is a common phenomenon in non-alcoholic fatty liver dis- ease patients. We aim to further explore the relationship... (Meta-Analysis)
Meta-Analysis
BACKGROUND/AIMS
Previous studies have shown that hyperferritinemia is a common phenomenon in non-alcoholic fatty liver dis- ease patients. We aim to further explore the relationship between serum ferritin levels and non-alcoholic fatty liver disease using a meta-analysis.
MATERIALS AND METHODS
Four Library databases were electronically searched from inception until December 2021 to find prospective cohort or case-control studies examining the relationship between serum ferritin levels and non-alcoholic fatty liver disease, and all kinds of literature were screened according to the inclusion and exclusion criteria. The odds ratio and other related data were extracted, and a meta-analysis was performed.
RESULTS
Eleven studies examining the relationship between serum ferritin levels and non-alcoholic fatty liver disease were included. The serum ferritin levels in the non-alcoholic fatty liver disease group were significantly higher than those without non-alcoholic fatty liver disease group (1.54 ng/mL, 95% CI: 0.85-2.23, P < .001). Serum ferritin levels were significantly associated with the risk of non-alcoholic fatty liver disease in both men and women (odds ratio = 2.36, 95% CI: 1.41-3.93, P = .001 and odds ratio = 2.93, 95% CI: 1.83-4.69, P < .001, respectively), and after adjusting for the parameters, the relationships were still shown to be significant in men and women (odds ratio = 2.24, 95% CI: 1.64-3.05, P < .001 and odds ratio = 3.30, 95% CI: 2.13-5.11, P < .001, respectively).
CONCLUSION
Serum ferritin levels were higher in patients with non-alcoholic fatty liver disease than in those without non-alcoholic fatty liver disease and were associated with the risk of non-alcoholic fatty liver disease in both men and women.
Topics: Male; Humans; Female; Non-alcoholic Fatty Liver Disease; Prospective Studies; Case-Control Studies; Databases, Factual; Ferritins
PubMed: 37674440
DOI: 10.5152/tjg.2023.22453 -
Journal of Trace Elements in Medicine... Dec 2023Iron homeostasis disturbance has been suggested to play a role in the pathology of Alzheimer's disease (AD). Systemic iron levels are regulated by iron-related proteins,... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND AND PURPOSE
Iron homeostasis disturbance has been suggested to play a role in the pathology of Alzheimer's disease (AD). Systemic iron levels are regulated by iron-related proteins, such as ferritin and transferrin. This meta-analysis was established to evaluate iron and iron-related proteins (ferritin, transferrin, lactoferrin, haptoglobin, hepcidin) in cerebrospinal fluid (CSF) and blood samples of AD patients compared with those in healthy controls (HCs).
METHODS
Iron and iron-related proteins in Alzheimer's disease was systematically searched within five databases (PubMed, EMBASE, Web of Science, Cochrane, Scopus) up to October 23, 2022. Fifty-four studies (with data for 5105 participants: 2174 AD patients and 2931 HCs) were included in this meta-analysis. This study was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA), applying Stata 14.0 software.
RESULTS
Decreased iron in blood and increased ferritin in CSF were found in AD patients compared with the levels in HCs. AD patients also exhibited lower lactoferrin in serum. Other variables (iron in CSF, ferritin in blood, transferrin in CSF/blood, haptoglobin in CSF/blood, and hepcidin in blood) did not differ between the groups.
CONCLUSION
This meta-analysis indicated that iron and iron-related proteins were associated with the risk of AD, suggesting the value of further exploration of iron imbalance in AD using biofluids.
Topics: Humans; Alzheimer Disease; Iron; Hepcidins; Haptoglobins; Lactoferrin; Ferritins; Transferrin
PubMed: 37734209
DOI: 10.1016/j.jtemb.2023.127304 -
Renal Failure Dec 2023This meta-analysis aims to assess the efficacy and safety of roxadustat in treating anemia patients with dialysis-dependent (DD) chronic kidney disease (CKD). (Meta-Analysis)
Meta-Analysis
BACKGROUND
This meta-analysis aims to assess the efficacy and safety of roxadustat in treating anemia patients with dialysis-dependent (DD) chronic kidney disease (CKD).
METHODS
We comprehensively searched 5 databases for randomized controlled trials (RCTs) investigating roxadustat for anemia in DD-CKD patients. RevMan 5.0 was used to extract and synthesize data for meta-analysis.
RESULTS
Ten different RCTs (9 studies) and 5698 DD-CKD patients with anemia were included. Our findings revealed that when compared to the erythropoiesis-stimulating agents (ESAs) group, the roxadustat group showed increased hemoglobin levels [MD (Mean Difference) 0.25 g/dL (95%CI 0.14 g/dL to 0.36 g/dL), < 0.00001] and improved iron-utilization by increasing serum iron [MD 1.85 µmol/L], total iron binding capacity [MD 35.73 µg/dL], transferrin saturation [MD 1.19%], and transferrin level [MD 0.40 g/L]. In addition, we found that roxadustat significantly decreased the low-density lipoprotein-cholesterol [MD -0.39 mmol/L] and total cholesterol [MD -0.6 mmol/L]. In patients with a C-reactive protein level that exceeds the upper limit of the normal range, hemoglobin levels were higher for roxadustat than for ESAs [MD 0.39 g/dL]. Treatment-emergent adverse events, treatment-emergent serious adverse events, and major adverse cardiovascular events were not significantly different between the two groups.
CONCLUSIONS
The hemoglobin levels of DD-CKD patients were significantly increased and not affected by the inflammatory state after roxadustat treatment. Roxadustat also improved iron utilization, and it was not associated with higher treatment-emergent adverse events, treatment-emergent serious adverse events, and major adverse cardiovascular events when compared to ESAs.
Topics: Humans; Renal Dialysis; Anemia; Iron; Cholesterol, LDL; Glycine; Hematinics; Cardiovascular Diseases; Transferrins; Hemoglobins
PubMed: 37489561
DOI: 10.1080/0886022X.2023.2195011 -
Immunity, Inflammation and Disease Aug 2023Lactoferrin is a versatile protein with important modulatory functions in inflammation and immune response. This glycoprotein can bind and sequester iron and LPS,... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Lactoferrin is a versatile protein with important modulatory functions in inflammation and immune response. This glycoprotein can bind and sequester iron and LPS, thereby intervening in certain signaling pathways and biological processes. In the present meta-analysis, we aimed to pool experimental data regarding the immunomodulatory effects of lactoferrin and its derived peptides on the NF-κB signaling pathway.
MATERIALS
We searched PubMed, Google Scholar, and Web of Science databases and obtained all related articles published before April 2022. Finally, 25 eligible studies were selected, and their reports were analyzed.
METHODS
We used Review Manager Version 5.2 to compute the standardized mean difference (SMD) and its 95% confidence interval. In addition, the source of heterogeneity was explored using meta-regression and sensitivity analysis. The symmetry of the funnel plot and Egger's test were also used to evaluate publication bias utilizing Comprehensive Meta-Analysis Version 2.
RESULTS
Comparing the group of cells and animals exposed to lipopolysaccharide alone with the group that received pretreatment with lactoferrin and its derivatives, we observed significant reductions in TNF-α, IL-1 beta, and IL-6 levels by 8.73 pg/mL, 2.21 pg/mL, and 3.24 pg/mL, respectively, in the second group. Additionally, IKK-β, p-IκB, and NF-κB (p65) levels were significantly lower by 7.37-fold, 15.02-fold, and 3.88-fold, respectively, in various cells and tissues.
CONCLUSION
Based on the results of this meta-analysis, lactoferrin and its derived peptides can be considered potent prophylactic and therapeutic candidates against inflammation-associated diseases by targeting the NF-kB pathway.
Topics: Animals; NF-kappa B; Lactoferrin; Signal Transduction; Peptides; Inflammation; Lipopolysaccharides; Immunity
PubMed: 37647433
DOI: 10.1002/iid3.972 -
International Journal of Molecular... Jan 2024Alzheimer's Disease (AD) is the most common neurodegenerative disease which manifests with progressive cognitive impairment, leading to dementia. Considering the... (Meta-Analysis)
Meta-Analysis Review
Alzheimer's Disease (AD) is the most common neurodegenerative disease which manifests with progressive cognitive impairment, leading to dementia. Considering the noninvasive collection of saliva, we designed the systematic review to answer the question "Are salivary biomarkers reliable for the diagnosis of Alzheimer's Disease?" Following the inclusion and exclusion criteria, 30 studies were included in this systematic review (according to the PRISMA statement guidelines). Potential biomarkers include mainly proteins, metabolites and even miRNAs. Based on meta-analysis, in AD patients, salivary levels of beta-amyloid42 and p-tau levels were significantly increased, and t-tau and lactoferrin were decreased at borderline statistical significance. However, according to pooled AUC, lactoferrin and beta-amyloid42 showed a significant predictive value for salivary-based AD diagnosis. In conclusion, potential markers such as beta-amyloid42, tau and lactoferrin can be detected in the saliva of AD patients, which could reliably support the early diagnosis of this neurodegenerative disease.
Topics: Humans; Alzheimer Disease; Neurodegenerative Diseases; Lactoferrin; MicroRNAs; Biomarkers
PubMed: 38256241
DOI: 10.3390/ijms25021168 -
European Journal of Gastroenterology &... Nov 2023Restorative proctocolectomy (RPC) is the most common surgical procedure to restore gastrointestinal continuity after surgical resection of the colon and rectum.... (Meta-Analysis)
Meta-Analysis
Restorative proctocolectomy (RPC) is the most common surgical procedure to restore gastrointestinal continuity after surgical resection of the colon and rectum. Pouchitis is a common complication with several different modalities that can be used to aid diagnosis. This systematic review and meta-analysis aimed at exploring the sensitivity and specificity these diagnostic modalities. The medical literature was searched using MEDLINE, EMBASE and EMBASE classic and PubMed from 1978 to June 2022. We calculated descriptive statistics using sensitivity, specificity, and false-positive rate of the primary studies and also their positive and negative likelihood ratios, and their diagnostic odds ratios. The screen found 5477 records with 13 studies being included. Faecal lactoferrin was found to have the highest pooled sensitivity and specificity of 98% and 88% respectively with imaging modalities coming in second and faecal calprotectin third with pooled sensitivities and specificities of 87% and 79% and 74% and 81% respectively. Faecal biomarkers particularly lactoferrin and imaging modalities may have an important role to play in diagnosing pouchitis. Importantly due to delays in availability of pouchoscopy, our data supports early ordering of these tests to help delineate from other causes. Further studies are required with larger cohort sizes to further validate these tests.
Topics: Humans; Pouchitis; Lactoferrin; Proctocolectomy, Restorative; Sensitivity and Specificity; Feces
PubMed: 37695613
DOI: 10.1097/MEG.0000000000002638 -
Obesity Surgery Jan 2024This systematic review and meta-analysis study aimed to estimate changes in blood nutrient concentrations and nutrient deficiencies in adolescents following bariatric... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
This systematic review and meta-analysis study aimed to estimate changes in blood nutrient concentrations and nutrient deficiencies in adolescents following bariatric surgery.
METHODS
We searched PubMed, Scopus, and the Web of Science to find studies published between January 2000 and August 2023. Observational studies reporting the mean blood concentration of nutrients before and after bariatric surgery or the proportion of nutrient deficiencies after the surgery in healthy adolescents were selected.
RESULTS
Fifteen studies were included. Gastric bypass and sleeve gastrostomy were the most common types of surgery. Vitamin D, iron, or ferritin, vitamin B12, calcium, and folic acid were the most studied nutrients, respectively. Other nutrients examined in the studies included zinc, phosphorus, and albumin. The serum ferritin increased by 21 mcg/L (95% CI = 10.0, 32.0 mcg/L) after the surgery, but there were no significant alterations in other nutrients. The postoperative prevalence of low albumin, ferritin, vitamin D, and vitamin B12 levels was 10%, 49%, 41%, and 20%, respectively. Also, 23% had an iron deficiency, and 10% had a calcium deficiency after bariatric surgery.
CONCLUSIONS
The serum ferritin level increased following bariatric surgery in adolescents. Vitamin D and ferritin deficiencies were estimated to be present in more than one-third of adolescents after the surgery.
Topics: Humans; Adolescent; Obesity, Morbid; Calcium; Bariatric Surgery; Gastric Bypass; Vitamins; Ferritins; Vitamin D; Vitamin B 12; Albumins
PubMed: 37991712
DOI: 10.1007/s11695-023-06955-y -
Seminars in Arthritis and Rheumatism Oct 2023To determine the prognostic factors of dermatomyositis with anti-melanoma differentiation-associated gene 5 (MDA5) antibody, a rare disease and often complicated by... (Meta-Analysis)
Meta-Analysis
OBJECTIVES
To determine the prognostic factors of dermatomyositis with anti-melanoma differentiation-associated gene 5 (MDA5) antibody, a rare disease and often complicated by life-threatening, rapidly progressive interstitial lung disease.
METHODS
Herein, we searched the Medline, Embase, and Cochrane Library databases and extracted studies published before August 23, 2022. Pooled analysis of hazard ratios (HRs) or odds ratios was used to identify prognostic factors for mortality among patients with anti-MDA5 antibody-positive dermatomyositis (MDA5+ DM).
RESULTS
Twenty-nine cohorts with 2,645 patients were included in this meta-analysis. Factors related to poor prognosis included old age (HR 1.54, 95% confidence interval (CI) 1.41-1.69, p < 0.01), male sex (HR 2.07, 95% CI 1.34-3.18, p < 0.01), rapidly progressive interstitial lung disease (RP-ILD) (HR 9.34, 95% CI 6.39-13.6, p < 0.01), high levels of ferritin (HR 1.05, 95% CI 1.01-1.08, p < 0.01), C-reactive protein (CRP) (HR 1.12, 95% CI 1.06-1.19, p < 0.01), creatine kinase (HR 1.05, 95% CI 1.03-1.07, p < 0.01), and lactate dehydrogenase (LDH) (HR 1.27, 95% CI 1.12-1.45, p < 0.01), whereas oxygen index (HR 0.990, 95% CI 0.988-0.992, p < 0.01), partial pressure of oxygen (HR 0.933, 95% CI 0.906-0.961, p < 0.01), forced vital capacity (HR 0.962, 95% CI 0.928-0.998, p = 0.038), and lymphocyte count (HR 0.421, 95% CI 0.282-0.629, p < 0.01) were associated with better outcomes.
CONCLUSIONS
Old age, male sex, hypoxemia, low forced vital capacity, lymphocytopenia, and high levels of ferritin, CRP, creatine kinase, and LDH are risk factors for mortality in patients with MDA5+ DM. However, a cautious interpretation of these results and further quality investigation are warranted.
Topics: Humans; Male; Autoantibodies; Dermatomyositis; Disease Progression; Ferritins; Interferon-Induced Helicase, IFIH1; Lung Diseases, Interstitial; Prognosis; Retrospective Studies; Risk Factors
PubMed: 37348186
DOI: 10.1016/j.semarthrit.2023.152231 -
Computers in Biology and Medicine Dec 2023The network meta-analysis (NMA) investigated the efficacy of six food supplements, namely glutamine, arginine, lactoferrin, prebiotics, synbiotics, and probiotics, in... (Meta-Analysis)
Meta-Analysis
BACKGROUND
The network meta-analysis (NMA) investigated the efficacy of six food supplements, namely glutamine, arginine, lactoferrin, prebiotics, synbiotics, and probiotics, in preventing necrotizing enterocolitis in premature infants.
METHODS
MEDLINE, Embase, and Cochrane Library were searched. Randomized controlled trials comparing different food supplements for premature infants were included.
RESULTS
Probiotics (OR, 0.47; 95% CrI, 0.33-0.63), arginine (OR, 0.38; 95% CrI, 0.14-0.98), glutamine (OR, 0.30; 95% CrI, 0.079-0.90), and synbiotics (OR, 0.13; 95% CrI, 0.037-0.37). were associated with a decreased incidence of NEC. Only probiotics (OR, 0.81; 95% CrI, 0.69-0.95) and lactoferrin (OR, 0.74; 95% CrI, 0.54-0.92) achieved lower risk of sepsis. Probiotics (OR, 0.58; 95% CrI, 0.40-0.79), prebiotics (OR, 0.23; 95% CrI, 0.043-0.86), and synbiotics (OR, 0.15; 95% CrI, 0.035-0.50) were associated with lower odds of mortality. Probiotics (MD, -2.3; 95% CrI: -3.7- -0.63) appeared to have earlier age of attainment of full feeding.
CONCLUSIONS
Based on this NMA, probiotics and synbiotics had the potential to be the top two preferable food supplements.
Topics: Infant, Newborn; Humans; Enterocolitis, Necrotizing; Network Meta-Analysis; Lactoferrin; Glutamine; Infant, Premature; Probiotics; Infant, Newborn, Diseases; Arginine
PubMed: 37924642
DOI: 10.1016/j.compbiomed.2023.107601