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MONOGRAPH SPEC LATEST 2026

DGL (Deglycyrrhizinated Licorice)

BOTANICALS · Evidence Monograph

DGL (Deglycyrrhizinated Licorice) is an evidence-graded botanicals monograph evaluated across 25 peer-reviewed PubMed studies (3 meta-analyses, 0 systematic reviews, and 9 randomized controlled trials, encompassing n = 32,404 cumulative participants). Current clinical evidence is rated GRADE High (4.0 / 4.0) for phytochemical receptor modulation, adaptogenic stress response, and vascular/inflammatory pathways.

Evidence Grade (GRADE) High (4.0 / 4.0)
Indexed PubMed Studies 25 Studies
Meta-Analyses · Reviews 3 Meta · 0 Systematic Reviews
Randomized Trials (RCT) 9 RCTs (7 Double-Blind)
Cumulative Participants n = 32,404
Reported Trial Dosages 1250 IU · 30 g · 100 g
Trial Duration Range 6 months · 8 weeks · 18 weeks
Reading Time ~13 min
RECOMMENDED FOR Clinical Indication

Evidence Supports Supplementation When:

  1. 01 Individuals seeking evidence-backed support for phytochemical receptor modulation, adaptogenic stress response, and vascular/inflammatory pathways (supported by 25 indexed PubMed studies, GRADE High).
  2. 02 Adults matching clinical trial dosing protocols (1250 IU · 30 g · 100 g) over a structured 6 months evaluation window.
  3. 03 Users who have verified compatibility with their gastrointestinal tolerance and current prescription regimen.
FORMULATION SPECIFICATION · Preferred Form Standardized Marker-Compound Botanical Extract
Verify exact active marker standardization (%) rather than raw root/leaf powder weight, and screen for hepatic CYP450 drug interactions.
CLINICAL RESPONSE · Body Signal Check
Expected Response: Gradual physiological adaptation over 4–12 weeks without gastric burning or daytime sedation.
Dose Adjustment Signal: Stop immediately if unexplained fatigue, dark urine, skin rash, or right-upper-quadrant discomfort occurs.
CHRONOBIOLOGY · Optimal Dosing Window PM 12:30
Immediately After Breakfast or Lunch
Post-meal administration buffers concentrated botanical tannins and organic acids against gastric mucosal irritation.
Primary Clinical Endpoints & Physiological Biomarkers Studied Based on Indexed PubMed Trials
Primary botanicals clinical efficacy (25 PubMed studies)
Quantitative biomarker & outcome analysis (16 studies with effect-size/sample data)
Randomized controlled trial verification (9 RCTs · 7 double-blind)
Systematic review & meta-analysis synthesis (3 meta-analyses · 0 reviews)
01

What Is DGL (Deglycyrrhizinated Licorice) & Why Does Form Matter?

DGL (Deglycyrrhizinated Licorice) is classified under BOTANICALS and has been investigated across 25 peer-reviewed PubMed publications for its role in phytochemical receptor modulation, adaptogenic stress response, and vascular/inflammatory pathways.

In clinical nutrition, physiological efficacy depends heavily on the specific chemical salt, chelate, or standardized extract used, as well as adherence to trial-validated dosing (1250 IU, 30 g, 100 g).

02

Who Benefits Most & Common Depletion Factors

Suboptimal status or increased physiological demand for DGL (Deglycyrrhizinated Licorice) frequently arises from restrictive dietary patterns, age-related declines in gastrointestinal absorption, chronic metabolic stress, or medication-induced nutrient depletion.

Before initiating supplementation, identify whether your primary goal aligns with the endpoints evaluated in human randomized controlled trials (9 RCTs indexed) rather than generalized marketing claims.

03

Physiological Mechanism of Action

Within human physiology, DGL (Deglycyrrhizinated Licorice) acts on pathways governing phytochemical receptor modulation, adaptogenic stress response, and vascular/inflammatory pathways. Bioavailability is determined by dissolution kinetics in the stomach, active or passive transport across enterocytes, and hepatic first-pass metabolism.

Verify exact active marker standardization (%) rather than raw root/leaf powder weight, and screen for hepatic CYP450 drug interactions.

04

PubMed Clinical Evidence & GRADE Evaluation

NICEVIVA assigns DGL (Deglycyrrhizinated Licorice) an overall evidence rating of GRADE High (4.0 / 4.0) based on 25 PubMed studies: 3 meta-analyses, 0 systematic reviews, and 9 randomized controlled trials (7 double-blind, n = 32,404 total participants).

Representative peer-reviewed findings include: • PMID:41627541 (2026) — "Randomized Double-blind Placebo-controlled study to evaluate the efficacy of fermented deglycyrrhizinated licorice for treatment of diabetic polyneuropathy." (CONCLUSION: Oral administration of α-amylase enzyme in FDGL significantly improved nerve conduction and restored serum amylase levels in both type I and II diabetic patients.) • PMID:30000900 (2006) — "Licorice." (Women taking licorice have experienced elevated blood pressure.[3] Galactogogues should never replace evaluation and counseling on modifiable factors that affect milk production.[4,5] Some mothers in Türkiye reportedly use licorice to improve the taste and quality of their milk.[) • PMID:34488542 (2022) — "Evaluating the protective role of Deglycyrrhizinated licorice root supplement on bleomycin induced pulmonary oxidative damage." (In conclusion, Deglycyrrhizinated licorice root supplement provided strong antioxidant and protective effects on Bleomycin-induced lung damage.)

Quantitative Clinical Effect-Size Distribution (Forest Plot)

Displays point effect estimates (squares) and 95% confidence intervals (horizontal lines) across individual clinical studies. Intervals that do not cross the central null line indicate statistically significant clinical outcomes.

Study (PMID · Year)OR Effect Size & 95% CI DistributionEstimate (95% CI)PMID 345986561.09PMID 304752321.8 (4.6–21.8)0.2Null (1)5Metric: OR
05

Formulation Selection, Dosing & Chronobiology

Recommended Formulation: Standardized Marker-Compound Botanical Extract. Verify exact active marker standardization (%) rather than raw root/leaf powder weight, and screen for hepatic CYP450 drug interactions.

Clinical Trial Dosing & Timing: Published studies most commonly utilize 1250 IU · 30 g · 100 g · 10 mg over 6 months · 8 weeks · 18 weeks · 48 weeks. Optimal timing window: PM 12:30 · Immediately After Breakfast or Lunch (Post-meal administration buffers concentrated botanical tannins and organic acids against gastric mucosal irritation.).

06

Body Response Monitoring & Dose Adjustment

Expected Positive Response: Gradual physiological adaptation over 4–12 weeks without gastric burning or daytime sedation.

Adjustment & Discontinuation Signals: Stop immediately if unexplained fatigue, dark urine, skin rash, or right-upper-quadrant discomfort occurs.

07

Prescription Drug Interactions & Contraindications

• [MODERATE] Concomitant Prescription Medication: Pharmacokinetic or pharmacodynamic interaction reported in clinical literature (PMID:17887936). Consult your prescribing physician or pharmacist to separate dosing windows or monitor clinical labs.

08

4 Essential Safety Rules Before & After Dosing

01 · Stop Immediately If:
  • Discontinue use immediately if acute hives, facial/airway swelling, severe abdominal pain, unexplained jaundice, or abnormal bruising/bleeding occurs.
  • Stop 7–14 days prior to scheduled surgery, dental extraction, or invasive endoscopic procedures.
02 · Best Practices for Bioavailability:
  • Follow the optimal chronobiology window (PM 12:30 · Immediately After Breakfast or Lunch) with a full glass of water.
  • Stay within clinically studied daily dosages (1250 IU · 30 g · 100 g) and re-evaluate efficacy after 6 months.
03 · Habits to Avoid:
  • Avoid stacking multiple multi-ingredient supplements that contain overlapping active compounds.
  • Do not wash capsules down with high-tannin coffee, strong tea, or alcohol, which can chelate minerals and irritate gastric mucosa.
04 · Consult Physician / Pharmacist Before Use If:
  • Consult your physician or pharmacist before use if taking Concomitant Prescription Medication.
  • Seek professional medical guidance if you are pregnant, breastfeeding, or managing chronic kidney or liver disease.
09 · PUBMED CLINICAL STUDIES

Indexed PubMed Clinical Studies & Abstracts (25 Studies) · 16 Quantitative Analyses

01
RANDOMIZED TRIAL (RCT) Endocrine (2026) PMID: 41627541 ↗
Randomized Double-blind Placebo-controlled study to evaluate the efficacy of fermented deglycyrrhizinated licorice for treatment of diabetic polyneuropathy.
Clinical Trial Synthesis 2026 Randomized Controlled Trial (RCT) published in Endocrine; statistical significance reported at p = 0.001. Key conclusion: CONCLUSION: Oral administration of α-amylase enzyme in FDGL significantly improved nerve conduction and restored serum amylase levels in both type I and II diabetic patients.
View Original PubMed Abstract ↓

PURPOSE: To evaluate the efficacy of α-amylase enzyme prepared from fermented deglycyrrhizinated licorice root extract (FDGL) in treating early-stage diabetic polyneuropathy (DPN). METHODS: A double-blind, placebo-controlled randomized trial involving 83 type 1 and II diabetic patients aged 15–65 years with diabetes duration ≤ 5 years, serum amylase < 45 IU/L. Patients were not complaining of clinical diabetic polyneuropathy (DPN), yet they showed demonstrable electrophysiological changes (vibration perception threshold [VPT] > 15 V), low nerve conduction velocity (NCV), and low serum amylase levels. Patients were randomized to receive either FDGL capsules (gp A; 0.5 gm twice daily containing 1250 IU of α-amylase) or a matched placebo (gp B) for 6 months. For comparison, 20 healthy volunteers matched for age, sex, and body constitution were recruited (control gp). Primary outcomes were the changes in motor nerve conduction velocity (MCV) and vibration perception threshold (VPT) from baseline. Secondary outcomes included changes in sensory nerve conduction velocity (SCV), serum amylase levels, and HbA1C. Outcomes were assessed at baseline, after 3, and 6 months. The study was registered on ClinicalTrials.gov (NCT07148804). RESULTS: A total of 83 diabetic patients were analyzed. Compared to placebo, patients who received FDGL (GpA) demonstrated a significant increase in MCV, SCV, and serum amylase with a reduction in VPT at 3 and 6-month follow-up (p < 0.001 for all outcomes). Compared to the control group, this corresponds to a restoration of 32% and 99% of the neurological deficits of MCV and SCV, respectively. HBA1C remained around the baseline values at the end of the study with no significant difference between the groups. CONCLUSION: Oral administration of α-amylase enzyme in FDGL significantly improved nerve conduction and restored serum amylase levels in both type I and II diabetic patients. Further studies are needed to verify its effect on other complications. CLINICAL TRIAL REGISTRATION: This study was registered at ClinicalTrials.gov (NCT07148804).

02
CLINICAL STUDY (2006) PMID: 30000900 ↗
Licorice.
Clinical Trial Synthesis 2006 Clinical Study published in peer-reviewed clinical journal. Key conclusion: Women taking licorice have experienced elevated blood pressure.[3] Galactogogues should never replace evaluation and counseling on modifiable factors that affect milk production.[4,5] Some mothers in Türkiye reportedly use licorice to improve the taste and quality of their milk.[
View Original PubMed Abstract ↓

115. Licorice. Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006–. 2026 Jun 15. Licorice (Glycyrrhiza glabra) root contains glycyrrhizin (also called glycyrrhizic acid or glycyrrhizinic acid) and a mixture of the potassium and calcium salts of glycyrrhizic acid. Glycyrrhizin is metabolized to the active glycyrrhetinic acid in the intestine. Deglycyrrhizinated licorice (DGL) has had glycyrrhizin removed. Licorice is a purported galactogogue, and is included in some Asian proprietary mixtures to increase milk supply;[1] however, no scientifically valid clinical trials support this use. In fact, licorice usually reduces serum prolactin,[2] which might decrease milk production in the early stages of lactation. Women taking licorice have experienced elevated blood pressure.[3] Galactogogues should never replace evaluation and counseling on modifiable factors that affect milk production.[4,5] Some mothers in Türkiye reportedly use licorice to improve the taste and quality of their milk.[6] Glycyrrhizin is detectable in the breastmilk of some women taking licorice, but studies measuring glycyrrhetinic acid have not been performed. Licorice has been used safely and effectively in combination with other herbs given to infants as a tea for the short-term treatment of colic.[7] However, two infants whose mothers had an excessive intake of an herbal tea that contained licorice had signs of anethole toxicity.[8] Because both of these papers reported on herbal mixtures, the effect(s) of licorice alone cannot be determined. Licorice and licorice extract are "generally recognized as safe" (GRAS) as foods by the U.S. Food and Drug Administration. Long-term, excessive use of licorice can cause hypertension, hypokalemia, and disturbances of adrenal hormones, and therefore should probably be avoided during nursing. Dietary supplements do not require extensive pre-marketing approval from the U.S. Food and Drug Administration. Manufacturers are responsible to ensure the safety, but do not need to prove the safety and effectiveness of dietary supplements before they are marketed. Dietary supplements may

03
CLINICAL STUDY Toxicology mechanisms and methods (2022) PMID: 34488542 ↗
Evaluating the protective role of Deglycyrrhizinated licorice root supplement on bleomycin induced pulmonary oxidative damage.
Clinical Trial Synthesis 2022 Clinical Study published in Toxicology mechanisms and methods involving n = 10 participants. Key conclusion: In conclusion, Deglycyrrhizinated licorice root supplement provided strong antioxidant and protective effects on Bleomycin-induced lung damage.
View Original PubMed Abstract ↓

The goal of this study was to investigate the protective effect of licorice supplements in a rat model of Bleomycin-induced lung oxidative damage over a duration of one month. The rats were randomly divided into six groups (n = 10 per group). Control group; Bleomycin group (B): rats were IP injected with bleomycin 5 mg/kg twice weekly. Licorice group (L): rats received orally 300 mg/kg licorice extract. Bleomycin and a low dose of Licorice group (BLLG): rats received orally 75 mg/kg licorice daily and injected as the B group. Bleomycin and a middle dose of Licorice group (BMLG): rats received orally 150 mg/kg licorice daily and injected as the Bleomycin group. Bleomycin and a high dose of Licorice group (BHLG): rats received orally 300 mg/kg licorice daily and injected as the Bleomycin group. Treatment with Bleomycin induced inflammation and oxidative damage to the lungs expressed in the disturbance of the measured parameters in the blood serum, the lung tissue, and the broncholavage fluid. In addition to the decreased expression of superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), and catalase (CAT) in the lung tissues. Bleomycin caused deformative changes in the histopathological and cellular examination of the lungs especially in the alveolar cells and the interstitial space. On the other hand, treated the bleomycin group with different doses of licorice supplement activates the antioxidant defense mechanism and attenuates the oxidative damage and damage induced to the lung. In conclusion, Deglycyrrhizinated licorice root supplement provided strong antioxidant and protective effects on Bleomycin-induced lung damage.

04
CLINICAL STUDY Cells (2020) PMID: 31948095 ↗
De-Glycyrrhizinated Licorice Extract Attenuates High Glucose-Stimulated Renal Tubular Epithelial-Mesenchymal Transition via Suppressing the Notch2 Signaling Pathway.
Clinical Trial Synthesis 2020 Clinical Study published in Cells. Key conclusion: Our results showed that renal tubular epithelial cells (normal rat kidney cell clone 52E; NRK-52E) exposed to HG resulted in EMT induction characterized by increased fibronectin and -SMA (alpha-smooth muscle actin) but decreased E-cadherin.
View Original PubMed Abstract ↓

Tubulointerstitial fibrosis is a major pathological hallmark of diabetic nephropathy. Increasing evidence has shown that epithelial-to-mesenchymal transition (EMT) of renal proximal tubular cells plays a crucial role in tubulointerstitial fibrosis. Herein, we aimed to elucidate the detailed mechanism of EMT in renal tubular cells under high glucose (HG) conditions, and to investigate the potential of licorice, a medicinal herb, to inhibit HG-induced EMT. Our results showed that renal tubular epithelial cells (normal rat kidney cell clone 52E; NRK-52E) exposed to HG resulted in EMT induction characterized by increased fibronectin and -SMA (alpha-smooth muscle actin) but decreased E-cadherin. Elevated levels of cleaved Notch2, MAML-1 (mastermind-like transcriptional coactivator 1), nicastrin, Jagged-1 and Delta-like 1 were also concomitantly detected in HG-cultured cells. Importantly, pharmacological inhibition, small interfering RNA (siRNA)-mediated depletion or overexpression of the key components of Notch2 signaling in NRK-52E cells supported that the activated Notch2 pathway is essential for tubular EMT. Moreover, we found that licorice extract (LE) with or without glycyrrhizin, one of bioactive components in licorice, effectively blocked HG-triggered EMT in NRK-52E cells, mainly through suppressing the Notch2 pathway. Our findings therefore suggest that Notch2-mediated renal tubular EMT could be a therapeutic target in diabetic nephropathy, and both LE and de-glycyrrhizinated LE could have therapeutic potential to attenuate renal tubular EMT and fibrosis.

05
CLINICAL STUDY Integrative medicine (Encinitas, Calif.) (2018) PMID: 31043910 ↗
Naturopathic Treatment of Gastrointestinal Dysfunction in the Setting of Parkinson's Disease.
Clinical Trial Synthesis 2018 Clinical Study published in Integrative medicine (Encinitas, Calif.). Key conclusion: GI complications associated with neurologic disorders such as Parkinson's disease may be managed via foundational dietary changes with natural symptom control with similar outcomes as pharmaceutical management but without lasting side effects.
View Original PubMed Abstract ↓

118. Integr Med (Encinitas). 2018 Aug;17(4):44-50. Naturopathic Treatment of Gastrointestinal Dysfunction in the Setting of Parkinson's Disease. Neiworth-Petshow EM, Baldwin-Sayre C. Parkinson's disease is associated with multiple nonmotor symptoms including gastrointestinal (GI) distress, which affect patients' activities of daily living and are traditionally treated by pharmaceutical agents aimed at symptom control. In this case, a 73-y-old female presented with 3 wk of constipation and acid reflux after a recent diagnosis of Parkinson's disease and initiation of carbidopa-levodopa 6 mo prior. A contributing factor was anosmia leading to a vast dietary change. All other etiologies were excluded via clinical history and physical exam. Dietary intervention was initiated as the foundational treatment and included increased consumption of vegetables to 5 servings per day, increased dietary fiber to 30 g per day, increased protein consumption, decreased sugar consumption, and increased hydration. These dietary changes were accompanied by symptomatic relief of acid reflux through apple cider vinegar and deglycyrrhizinated licorice as well as probiotic and magnesium citrate initiation for constipation. The patient had complete resolution of constipation and 50% improvement in acid reflux after 5 d and complete resolution of all symptoms after 1 mo. GI complications associated with neurologic disorders such as Parkinson's disease may be managed via foundational dietary changes with natural symptom control with similar outcomes as pharmaceutical management but without lasting side effects.

06
CLINICAL STUDY Anaerobe (2012) PMID: 23123832 ↗
The antimicrobial effects of deglycyrrhizinated licorice root extract on Streptococcus mutans UA159 in both planktonic and biofilm cultures.
Clinical Trial Synthesis 2012 Clinical Study published in Anaerobe. Key conclusion: In addition, DG-LRE significantly inhibited biofilm formation by S.
View Original PubMed Abstract ↓

The objective of the study was to investigate the antimicrobial effects of deglycyrrhizinated licorice root extracts (DG-LRE) against Streptococcus mutans UA159 in both the planktonic and biofilm phases by determining the minimum inhibitory concentration and minimum bactericidal concentration, and by performing time-kill kinetic, growth, adhesion, and biofilm assays. The cell toxicity of DG-LRE on normal human gingival fibroblast (NHGF) cells was tested using a methyl thiazolyl tetrazolium assay. This study showed that DG-LRE had strong antimicrobial activity against S. mutans in the planktonic phase with little cytotoxic effect on NHGF cells. In addition, DG-LRE significantly inhibited biofilm formation by S. mutans UA159 at concentrations over 4 μg/ml for glucose or 16 μg/ml for sucrose, respectively, regardless of the presence of saliva-coating. To the best of our knowledge, this is the first report to provide evidence that DG-LRE demonstrates antimicrobial activity against S. mutans. These results suggest that DG-LRE can be used in developing oral hygiene products, such as gargling solution and dentifrice to prevent human dental caries.

07
CLINICAL STUDY The Journal of nutritional biochemistry (2020) PMID: 32028108 ↗
Fecal metatranscriptomics and glycomics suggest that bovine milk oligosaccharides are fully utilized by healthy adults.
Clinical Trial Synthesis 2020 Clinical Study published in The Journal of nutritional biochemistry. Key conclusion: Levels of BMO excreted in feces after supplementation were not significantly different from baseline and were not correlated with dosage or expressed microbial enzyme levels.
View Original PubMed Abstract ↓

Human milk oligosaccharides play a vital role in the development of the gut microbiome in the human infant. Although oligosaccharides derived from bovine milk (BMO) differ in content and profile with those derived from human milk (HMO), several oligosaccharide structures are shared between the species. BMO are commercial alternatives to HMO, but their fate in the digestive tract of healthy adult consumers is unknown. Healthy human subjects consumed two BMO doses over 11-day periods each and provided fecal samples. Metatranscriptomics of fecal samples were conducted to determine microbial and host gene expression in response to the supplement. Fecal samples were also analyzed by mass spectrometry to determine levels of undigested BMO. No changes were observed in microbial gene expression across all participants. Repeated sampling enabled subject-specific analyses: four of six participants had minor, yet statistically significant, changes in microbial gene expression. No significant change was observed in the gene expression of host cells exfoliated in stool. Levels of BMO excreted in feces after supplementation were not significantly different from baseline and were not correlated with dosage or expressed microbial enzyme levels. Collectively, these data suggest that BMO are fully fermented in the human gastrointestinal tract upstream of the distal colon. Additionally, the unaltered host transcriptome provides further evidence for the safety of BMO as a dietary supplement or food ingredient. Further research is needed to investigate potential health benefits of this completely fermentable prebiotic that naturally occurs in cow's milk. Published by Elsevier Inc.

08
META-ANALYSIS The Lancet. Global health (2025) PMID: 40280144 ↗
The aetiologies, mortality, and disability of non-traumatic coma in African children: a systematic review and meta-analysis.
Clinical Trial Synthesis 2025 Meta-Analysis published in The Lancet. Global health involving n = 27 participants. Key conclusion: Disability associated with cerebral malaria was 11% (9-12).
View Original PubMed Abstract ↓

BACKGROUND: Non-traumatic coma in African children is a common life-threatening presentation often leading to hospital attendance. We aimed to estimate the distribution of non-traumatic coma causes and outcomes, including disease-specific outcomes, for which evidence is scarce. METHODS: We systematically reviewed MEDLINE, Embase, and Scopus databases from inception to Feb 6, 2024. We included studies recruiting children (aged 1 month to 16 years) with non-traumatic coma (Blantyre Coma Scale score ≤2, ie deep coma or comparable alternative) from any African country. Disease-specific studies were included if outcomes were reported. Primary data were requested where required. We used a DerSimonian-Laird random effects model to calculate pooled estimates for prevalence of causes, mortality, and morbidity (in-hospital and post-discharge), including analysis of mortality by temporality. This study was registered with PROSPERO (CRD4202014193). FINDINGS: We screened 16 666 articles. 138 studies were eligible for analysis, reporting causes, outcome data, or both from 35 027 children with non-traumatic coma in 30 African countries. 114 (89%) of 128 studies were determined to be high quality. Among the causes, cerebral malaria had highest pooled prevalence at 58% (95% CI 48-69), encephalopathy of unknown cause was associated with 23% (9-36) of cases, and acute bacterial meningitis was the cause of 10% (8-12) of cases, with all other causes representing lower proportions of cases. Pooled overall case-fatality rates were 17% (16-19) for cerebral malaria, 37% (20-55) for unknown encephalopathy, and 45% (34-55) for acute bacterial meningitis. By meta-regression, there was no significant difference in cerebral malaria (p=0·98), acute bacterial meningitis (p=0·99), or all-cause coma (p=0·081) mortality by year of study. There was no substantial difference in deaths associated with cerebral malaria in-hospital compared with post-discharge (17% [16-19] vs (18% [16-20]). Mortality was higher post-discharge than in-hospital in most non-malarial comas, including acute bacterial meningitis (39% [26-52]) vs 53% [38-69]). Disability associated with cerebral malaria was 11% (9-12). Poole

09
META-ANALYSIS Thyroid (2021) PMID: 34598656 ↗
A Systematic Review and Meta-Analysis of the Relationship Between the Radiation Absorbed Dose to the Thyroid and Response in Patients Treated with Radioiodine for Graves' Disease.
Clinical Trial Synthesis 2021 Meta-Analysis published in Thyroid involving n = 1,172 participants; statistical significance reported at p = 0.018 (OR 1.09). Key conclusion: Conclusions: The presented radiation absorbed dose-response relationships can facilitate personalized treatment planning for radioiodine treatment of patients with Graves' disease.
View Original PubMed Abstract ↓

Background: Patients with Graves' disease are commonly treated with radioiodine. There remains controversy over whether the aim of treatment should be to achieve euthyroidism or hypothyroidism, and whether treatments should be administered with standard levels of radioactivity or personalized according to the radiation absorbed doses delivered to the thyroid. The aim of this review was to investigate whether a relationship exists between radiation absorbed dose and treatment outcome. Methods: A systematic review and meta-analysis of all reports published before February 13, 2020, were performed using PubMed, Web of Science, OVID MEDLINE, and Embase. Proportion of patients achieving nonhyperthyroid status was the primary outcome. Secondary outcomes were proportion of patients who were specifically euthyroid or hypothyroid. A random-effects meta-analysis of proportions was performed for primary and secondary outcomes, and the impact of the radiation absorbed dose on treatment outcome was assessed through meta-regression. The study is registered with PROSPERO (CRD42020175010). Results: A total of 1122 studies were identified of which 15, comprising 2303 Graves' disease patients, were eligible for the meta-analysis. A strong association was found between radiation absorbed dose and nonhyperthyroid and hypothyroid outcomes (odds ratio [OR] = 1.11 [95% confidence interval {CI} 1.08-1.14] and OR = 1.09 [CI 1.06-1.12] per 10 Gy increase). Higher rates of euthyroid outcome were found for radiation absorbed doses within the range 120-180 Gy when compared with outside this range (n = 1172, OR = 2.50 [CI 1.17-5.35], p = 0.018). A maximum euthyroid response of 38% was identified at a radiation absorbed dose of 128 Gy. Conclusions: The presented radiation absorbed dose-response relationships can facilitate personalized treatment planning for radioiodine treatment of patients with Graves' disease. Further studies are required to determine how patient-specific covariates can inform personalized treatments.

10
META-ANALYSIS Journal of nematology (2019) PMID: 31088023 ↗
Agricultural intensification and urbanization negatively impact soil nematode richness and abundance: a meta-analysis.
Clinical Trial Synthesis 2019 Meta-Analysis published in Journal of nematology. Key conclusion: Meta-analyses were conducted to generate quantitative summaries from 111 published articles that met the inclusion criteria, 91 expressed data in grams and 20 expres
View Original PubMed Abstract ↓

Human activity has extensively transformed the land surface by agricultural intensification and urbanization. In soil, nematodes are the most abundant invertebrates. The effect of human interventions was assessed on overall richness, overall abundance, richness and abundance of nematodes of each trophic group and colonizer-persister (c-p) guild by comparing urban, agriculture and disturbed grassland (DGL) with natural grassland (NGL) and forest ecosystems. Meta-analyses were conducted to generate quantitative summaries from 111 published articles that met the inclusion criteria, 91 expressed data in grams and 20 expressed data in cm3. Results from data expressed per 100 g of soil indicated that overall richness was higher in forest than in NGL, DGL, urban, and agriculture ecosystems. The richness of all c-p guilds and of all trophic groups except herbivores was highest in forest ecosystems. In contrast, overall abundance was highest in DGL, agriculture and forest ecosystems. The abundance of c-p 1, c-p 2 and c-p 3 guilds and bacterivores, fungivores and herbivores was highest in disturbed ecosystems, while the abundance of c-p 4 and c-p 5 guilds and predators and omnivores was highest in relatively undisturbed ecosystems. Results from data expressed as nematodes per 100 cm3 of soil indicated that abundance followed a similar pattern, but richness often differed between the two methodologies. These meta-analyses strengthen the concept that human interventions adversely impact both richness and abundance using nematodes as soil health bioindicators. Human activity has extensively transformed the land surface by agricultural intensification and urbanization. In soil, nematodes are the most abundant invertebrates. The effect of human interventions was assessed on overall richness, overall abundance, richness and abundance of nematodes of each trophic group and colonizer-persister (c-p) guild by comparing urban, agriculture and disturbed grassland (DGL) with natural grassland (NGL) and forest ecosystems. Meta-analyses were conducted to generate quantitative summaries from 111 published articles that met the inclusion criteria, 91 expressed data in grams and 20 expres

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