NCT06416475

Brief Summary

The investigators aim to explore the effect of daily supplementation of Wolfia globosa Mankai on HbA1c and insulin resistance response among participants with type 2 diabetes (T2D). The investigators hypothesize that adding daily Mankai to T2D's healthy nutrition might lower HbA1c and promote glycemic control. Methods: A 3-month pilot RCT among 104 patients with T2D, with two intervention arms consuming comparable bottle volumes of either crude plant Mankai beverage (60ml Mankai) or water (60ml) 3 times/day postprandially over 3 months. Blood, urine, fecal, and clinical measures will be taken at 0 and 3 months. Overall appetite, food intake, symptoms, and medical treatment will be monitored. Importance: This study's results will shed light on the effects of regular Mankai consumption on HbA1c among patients with T2D, which may reveal a new nutritional source to improve glycemic control in T2D.

Trial Health

55
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
104

participants targeted

Target at P50-P75 for phase_2 diabetes-mellitus-type-2

Timeline
Completed

Started Apr 2024

Shorter than P25 for phase_2 diabetes-mellitus-type-2

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 21, 2024

Completed
1 month until next milestone

Study Start

First participant enrolled

April 30, 2024

Completed
16 days until next milestone

First Posted

Study publicly available on registry

May 16, 2024

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 8, 2024

Completed
7 days until next milestone

Study Completion

Last participant's last visit for all outcomes

August 15, 2024

Completed
Last Updated

May 16, 2024

Status Verified

May 1, 2024

Enrollment Period

3 months

First QC Date

March 21, 2024

Last Update Submit

May 15, 2024

Conditions

Keywords

clinical trialDiabetes Mellitus, Type 2nutritional interventionMankai DuckweedWolffia-globosapolyphenols

Outcome Measures

Primary Outcomes (2)

  • HbA1c

    Glycated hemoglobin-HbA1c; as detected by a standard laboratory measure

    Baseline and three months time points

  • Fasting glycemic and insulin resistance profiling

    Fasting glycemic and insulin resistance profiling \[using calculated homeostatic model assessment of insulin resistance (HOMA-IR) as detected by laboratory assessment\]

    Baseline and three months time points

Secondary Outcomes (30)

  • Lipid profile

    Baseline and three months time points

  • Lipid profile

    Baseline and three months time points

  • Hormones and adipokines

    Baseline and three months time points

  • Inflammatory biomarkers

    Baseline and three months time points

  • Hunger/satiety hormones

    Baseline and three months time points

  • +25 more secondary outcomes

Study Arms (2)

Mankai supplementation group

ACTIVE COMPARATOR

Three times a day supplementation of postprandial Mankai duckweed drink (60mL crude plant Mankai beverage) right after breakfast, lunch, and dinner while maintaining the recommended Mediterranean diet lifestyle and medical treatment.

Dietary Supplement: Mankai supplementation

Water group

PLACEBO COMPARATOR

Three times a day consumption of postprandial water (60mL) right after breakfast, lunch, and dinner while maintaining the recommended Mediterranean diet lifestyle and medical treatment.

Other: Water consumption

Interventions

Mankai supplementationDIETARY_SUPPLEMENT

The overall dose of the three Mankai duckweed beverages/day contains \~10 grams of dry matter.

Mankai supplementation group

Water consumption

Water group

Eligibility Criteria

Age30 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age \> 30 years
  • A formal diagnosis of T2D (126mg/dl fasting glucose or higher, or HbA1c\>6.5%) or taking T2D medications with HbA1c levels over 7%
  • Medication stability for at least 3 months prior to Intervention initiation
  • Adherence to medical follow-up in primary care clinic or diabetes-centered outpatient services

You may not qualify if:

  • HbA1c lower than 7% or higher than 10%
  • Known insulinopenia
  • Treatment with coumadin (warfarin)
  • Advanced renal failure
  • Significantly disturbed liver enzymes (liver transaminases or bilirubin levels more than time three upper-normal-limit)
  • A significant illness that might require hospitalization
  • Regular Mankai consumption
  • State of pregnancy or lactation
  • Presence of active cancer or chemotherapy treatment in last three years
  • Participation in another trial

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Soroka Medical Center

Beersheba, Israel

Location

Related Publications (19)

  • Piche ME, Tchernof A, Despres JP. Obesity Phenotypes, Diabetes, and Cardiovascular Diseases. Circ Res. 2020 May 22;126(11):1477-1500. doi: 10.1161/CIRCRESAHA.120.316101. Epub 2020 May 21.

    PMID: 32437302BACKGROUND
  • Joseph JJ, Deedwania P, Acharya T, Aguilar D, Bhatt DL, Chyun DA, Di Palo KE, Golden SH, Sperling LS; American Heart Association Diabetes Committee of the Council on Lifestyle and Cardiometabolic Health; Council on Arteriosclerosis, Thrombosis and Vascular Biology; Council on Clinical Cardiology; and Council on Hypertension. Comprehensive Management of Cardiovascular Risk Factors for Adults With Type 2 Diabetes: A Scientific Statement From the American Heart Association. Circulation. 2022 Mar;145(9):e722-e759. doi: 10.1161/CIR.0000000000001040. Epub 2022 Jan 10.

    PMID: 35000404BACKGROUND
  • Zhu J, Yu X, Zheng Y, Li J, Wang Y, Lin Y, He Z, Zhao W, Chen C, Qiu K, Wu J. Association of glucose-lowering medications with cardiovascular outcomes: an umbrella review and evidence map. Lancet Diabetes Endocrinol. 2020 Mar;8(3):192-205. doi: 10.1016/S2213-8587(19)30422-X. Epub 2020 Jan 29.

    PMID: 32006518BACKGROUND
  • Yancy WS Jr, Dunbar SA, Boucher JL, Cypress M, Evert AB, Franz MJ, Mayer-Davis EJ, Neumiller JJ, Urbanski P, Verdi CL, Nwankwo R. Response to comments on Evert et al. Nutrition therapy recommendations for the management of adults with diabetes. Diabetes care 2013;36:3821-3842. Diabetes Care. 2014 May;37(5):e102-3. doi: 10.2337/dc14-0077. No abstract available.

    PMID: 24757235BACKGROUND
  • Corrigendum to: 2021 ESC Guidelines on cardiovascular disease prevention in clinical practice: Developed by the Task Force for cardiovascular disease prevention in clinical practice with representatives of the European Society of Cardiology and 12 medical societies With the special contribution of the European Association of Preventive Cardiology (EAPC). Eur Heart J. 2022 Nov 7;43(42):4468. doi: 10.1093/eurheartj/ehac458. No abstract available.

    PMID: 36083202BACKGROUND
  • Kaplan A, Zelicha H, Tsaban G, Yaskolka Meir A, Rinott E, Kovsan J, Novack L, Thiery J, Ceglarek U, Burkhardt R, Willenberg A, Tirosh A, Cabantchik I, Stampfer MJ, Shai I. Protein bioavailability of Wolffia globosa duckweed, a novel aquatic plant - A randomized controlled trial. Clin Nutr. 2019 Dec;38(6):2576-2582. doi: 10.1016/j.clnu.2018.12.009. Epub 2018 Dec 11.

    PMID: 30591380BACKGROUND
  • Yaskolka Meir A, Tsaban G, Zelicha H, Rinott E, Kaplan A, Youngster I, Rudich A, Shelef I, Tirosh A, Brikner D, Pupkin E, Sarusi B, Bluher M, Stumvoll M, Thiery J, Ceglarek U, Stampfer MJ, Shai I. A Green-Mediterranean Diet, Supplemented with Mankai Duckweed, Preserves Iron-Homeostasis in Humans and Is Efficient in Reversal of Anemia in Rats. J Nutr. 2019 Jun 1;149(6):1004-1011. doi: 10.1093/jn/nxy321.

    PMID: 30915471BACKGROUND
  • Sela I, Yaskolka Meir A, Brandis A, Krajmalnik-Brown R, Zeibich L, Chang D, Dirks B, Tsaban G, Kaplan A, Rinott E, Zelicha H, Arinos S, Ceglarek U, Isermann B, Lapidot M, Green R, Shai I. Wolffia globosa-Mankai Plant-Based Protein Contains Bioactive Vitamin B12 and Is Well Absorbed in Humans. Nutrients. 2020 Oct 8;12(10):3067. doi: 10.3390/nu12103067.

    PMID: 33049929BACKGROUND
  • Yaskolka Meir A, Tuohy K, von Bergen M, Krajmalnik-Brown R, Heinig U, Zelicha H, Tsaban G, Rinott E, Kaplan A, Aharoni A, Zeibich L, Chang D, Dirks B, Diotallevi C, Arapitsas P, Vrhovsek U, Ceglarek U, Haange SB, Rolle-Kampczyk U, Engelmann B, Lapidot M, Colt M, Sun Q, Shai I. The Metabolomic-Gut-Clinical Axis of Mankai Plant-Derived Dietary Polyphenols. Nutrients. 2021 May 30;13(6):1866. doi: 10.3390/nu13061866.

    PMID: 34070816BACKGROUND
  • Tsaban G, Yaskolka Meir A, Rinott E, Zelicha H, Kaplan A, Shalev A, Katz A, Rudich A, Tirosh A, Shelef I, Youngster I, Lebovitz S, Israeli N, Shabat M, Brikner D, Pupkin E, Stumvoll M, Thiery J, Ceglarek U, Heiker JT, Korner A, Landgraf K, von Bergen M, Bluher M, Stampfer MJ, Shai I. The effect of green Mediterranean diet on cardiometabolic risk; a randomised controlled trial. Heart. 2021 Jun 11;107(13):1054-1061. doi: 10.1136/heartjnl-2020-317802.

    PMID: 33234670BACKGROUND
  • Yaskolka Meir A, Rinott E, Tsaban G, Zelicha H, Kaplan A, Rosen P, Shelef I, Youngster I, Shalev A, Bluher M, Ceglarek U, Stumvoll M, Tuohy K, Diotallevi C, Vrhovsek U, Hu F, Stampfer M, Shai I. Effect of green-Mediterranean diet on intrahepatic fat: the DIRECT PLUS randomised controlled trial. Gut. 2021 Nov;70(11):2085-2095. doi: 10.1136/gutjnl-2020-323106. Epub 2021 Jan 18.

    PMID: 33461965BACKGROUND
  • Zelicha H, Kloting N, Kaplan A, Yaskolka Meir A, Rinott E, Tsaban G, Chassidim Y, Bluher M, Ceglarek U, Isermann B, Stumvoll M, Quayson RN, von Bergen M, Engelmann B, Rolle-Kampczyk UE, Haange SB, Tuohy KM, Diotallevi C, Shelef I, Hu FB, Stampfer MJ, Shai I. The effect of high-polyphenol Mediterranean diet on visceral adiposity: the DIRECT PLUS randomized controlled trial. BMC Med. 2022 Sep 30;20(1):327. doi: 10.1186/s12916-022-02525-8.

    PMID: 36175997BACKGROUND
  • Tsaban G, Shalev A, Katz A, Yaskolka Meir A, Rinott E, Zelicha H, Kaplan A, Wolak A, Bluher M, Stampfer MJ, Shai I. Effect of Lifestyle Modification and Green Mediterranean Diet on Proximal Aortic Stiffness. J Am Coll Cardiol. 2023 Apr 25;81(16):1659-1661. doi: 10.1016/j.jacc.2023.02.032. No abstract available.

    PMID: 37076220BACKGROUND
  • Tsaban G, Yaskolka Meir A, Zelicha H, Rinott E, Kaplan A, Shalev A, Katz A, Brikner D, Bluher M, Ceglarek U, Stumvoll M, Stampfer MJ, Shai I. Diet-induced Fasting Ghrelin Elevation Reflects the Recovery of Insulin Sensitivity and Visceral Adiposity Regression. J Clin Endocrinol Metab. 2022 Jan 18;107(2):336-345. doi: 10.1210/clinem/dgab681.

    PMID: 34643713BACKGROUND
  • Rinott E, Meir AY, Tsaban G, Zelicha H, Kaplan A, Knights D, Tuohy K, Scholz MU, Koren O, Stampfer MJ, Wang DD, Shai I, Youngster I. The effects of the Green-Mediterranean diet on cardiometabolic health are linked to gut microbiome modifications: a randomized controlled trial. Genome Med. 2022 Mar 10;14(1):29. doi: 10.1186/s13073-022-01015-z.

    PMID: 35264213BACKGROUND
  • Rinott E, Youngster I, Yaskolka Meir A, Tsaban G, Zelicha H, Kaplan A, Knights D, Tuohy K, Fava F, Scholz MU, Ziv O, Rubin E, Tirosh A, Rudich A, Bluher M, Stumvoll M, Ceglarek U, Clement K, Koren O, Wang DD, Hu FB, Stampfer MJ, Shai I. Effects of Diet-Modulated Autologous Fecal Microbiota Transplantation on Weight Regain. Gastroenterology. 2021 Jan;160(1):158-173.e10. doi: 10.1053/j.gastro.2020.08.041. Epub 2020 Aug 26.

    PMID: 32860791BACKGROUND
  • Zelicha H, Kaplan A, Yaskolka Meir A, Tsaban G, Rinott E, Shelef I, Tirosh A, Brikner D, Pupkin E, Qi L, Thiery J, Stumvoll M, Kloting N, von Bergen M, Ceglarek U, Bluher M, Stampfer MJ, Shai I. The Effect of Wolffia globosa Mankai, a Green Aquatic Plant, on Postprandial Glycemic Response: A Randomized Crossover Controlled Trial. Diabetes Care. 2019 Jul;42(7):1162-1169. doi: 10.2337/dc18-2319. Epub 2019 May 10.

    PMID: 31076421BACKGROUND
  • Gepner Y, Golan R, Harman-Boehm I, Henkin Y, Schwarzfuchs D, Shelef I, Durst R, Kovsan J, Bolotin A, Leitersdorf E, Shpitzen S, Balag S, Shemesh E, Witkow S, Tangi-Rosental O, Chassidim Y, Liberty IF, Sarusi B, Ben-Avraham S, Helander A, Ceglarek U, Stumvoll M, Bluher M, Thiery J, Rudich A, Stampfer MJ, Shai I. Effects of Initiating Moderate Alcohol Intake on Cardiometabolic Risk in Adults With Type 2 Diabetes: A 2-Year Randomized, Controlled Trial. Ann Intern Med. 2015 Oct 20;163(8):569-79. doi: 10.7326/M14-1650. Epub 2015 Oct 13.

    PMID: 26458258BACKGROUND
  • Dorans KS, Bazzano LA, Qi L, He H, Chen J, Appel LJ, Chen CS, Hsieh MH, Hu FB, Mills KT, Nguyen BT, O'Brien MJ, Samet JM, Uwaifo GI, He J. Effects of a Low-Carbohydrate Dietary Intervention on Hemoglobin A1c: A Randomized Clinical Trial. JAMA Netw Open. 2022 Oct 3;5(10):e2238645. doi: 10.1001/jamanetworkopen.2022.38645.

    PMID: 36287562BACKGROUND

MeSH Terms

Conditions

Diabetes Mellitus, Type 2

Interventions

Drinking

Condition Hierarchy (Ancestors)

Diabetes MellitusGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System Diseases

Intervention Hierarchy (Ancestors)

EatingNutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological PhenomenaDigestive System Physiological PhenomenaDigestive System and Oral Physiological Phenomena

Study Officials

  • Idit Liberty

    Soroka University Medical Center

    PRINCIPAL INVESTIGATOR
  • Iris Shai

    Ben-Gurion University of the Negev

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: A 3-month Randomized Controlled pilot Trial among 104 patients with T2D, who will be randomly allocated to consume comparable bottle volumes of either crude plant Mankai beverage (60ml Mankai) or water (60ml) on top of a standardized MediterraneanT2D-recommended healthy diet, after morning, lunch, and dinner over 3 months.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Prof. Iris Shai

Study Record Dates

First Submitted

March 21, 2024

First Posted

May 16, 2024

Study Start

April 30, 2024

Primary Completion

August 8, 2024

Study Completion

August 15, 2024

Last Updated

May 16, 2024

Record last verified: 2024-05

Data Sharing

IPD Sharing
Will not share

Locations