UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000058991
Receipt number R000066839
Scientific Title Evaluation of the effects of probiotic intake on symptoms of male menopause: a double-blind, randomized, parallel-group controlled trial
Date of disclosure of the study information 2025/09/04
Last modified on 2025/09/04 14:37:35

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Basic information

Public title

Evaluation of the effects of probiotic intake on symptoms of male menopause: a double-blind, randomized, parallel-group controlled trial

Acronym

Evaluation of the effects of probiotic intake on symptoms of male menopause: a double-blind, randomized, parallel-group controlled trial

Scientific Title

Evaluation of the effects of probiotic intake on symptoms of male menopause: a double-blind, randomized, parallel-group controlled trial

Scientific Title:Acronym

Evaluation of the effects of probiotic intake on symptoms of male menopause: a double-blind, randomized, parallel-group controlled trial

Region

Japan


Condition

Condition

Healthy

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

Focusing on the probiotic effects of Limosilactobacillus (L.) reuteri ATCC PTA 6475, this double-blind, randomized, parallel-group controlled trial aims to observe how the characteristic conditions associated with male menopause change following its intake.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1

Confirmatory

Trial characteristics_2

Pragmatic

Developmental phase

Not applicable


Assessment

Primary outcomes

Change from baseline (week 0) over 12 weeks in the Heinemann Aging Males' Symptoms (AMS) score

Key secondary outcomes

12-week changes in serum testosterone levels (total and free), estradiol levels, SF-36 (Medical Outcome Study 36-Item Short-Form Health Survey; a questionnaire for assessing health-related quality of life), muscle mass, and fecal microbiota.


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Double blind -all involved are blinded

Control

Placebo

Stratification

YES

Dynamic allocation

NO

Institution consideration


Blocking

YES

Concealment

No need to know


Intervention

No. of arms

2

Purpose of intervention

Prevention

Type of intervention

Food

Interventions/Control_1

Capsules containing freeze-dried L. reuteri ATCC PTA 6475 powder, formulated to provide 5x10^9 CFU per capsule. Participants will take 8 capsules per day.

Interventions/Control_2

Capsules manufactured by replacing the freeze-dried L. reuteri ATCC PTA 6475 powder with maltodextrin, so that they contain no bacterial powder. Participants will take 8 capsules per day.

Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

40 years-old <=

Age-upper limit

64 years-old >=

Gender

Male

Key inclusion criteria

1) Healthy male
2) Willing to provide written informed consent

Key exclusion criteria

1) Individuals who regularly take medication for chronic diseases
2) Individuals suspected of having a disease at the time of the screening test
3) Individuals who experience early morning erections less than once per week on average
4) Individuals with a total AMS score indicating severe symptoms (50 points or higher)
5) Individuals who regularly take supplements (including foods) that may affect sex hormone levels or gut microbiota
6) Individuals currently undergoing treatment for, or with a history of, erectile dysfunction (ED) or benign prostatic hyperplasia
7) Individuals with a history of mental disorders such as depression or attention-deficit/hyperactivity disorder (ADHD)
8) Individuals participating in another clinical study at the time of this study or who have participated in another clinical study within the past three months

Target sample size

80


Research contact person

Name of lead principal investigator

1st name Masafumi
Middle name
Last name Noda

Organization

Graduate School of Biomedical and Health Scie nces, Hiroshima University

Division name

Department of Probiotic Science for Preventive Medicine

Zip code

734-8553

Address

Kasumi 1-2-3, Minami-ku, Hiroshima

TEL

082-257-1533

Email

bel@hiroshima-u.ac.jp


Public contact

Name of contact person

1st name Masafumi
Middle name
Last name Noda

Organization

Graduate School of Biomedical and Health Scie nces, Hiroshima University

Division name

Department of Probiotic Science for Preventive Medicine

Zip code

734-8553

Address

Kasumi 1-2-3, Minami-ku, Hiroshima

TEL

082-257-1533

Homepage URL


Email

funcfood@hiroshima-u.ac.jp


Sponsor or person

Institute

Hiroshima University

Institute

Department

Personal name



Funding Source

Organization

BioGaia AB

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Ethical Committee for Clinical Research of Hiroshima University

Address

Kasumi 1-2-3, Minami-ku, Hiroshima

Tel

082-257-1947

Email

iryo-sinsa@office.hiroshima-u.ac.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions

広島大学病院


Other administrative information

Date of disclosure of the study information

2025 Year 09 Month 04 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Preinitiation

Date of protocol fixation

2025 Year 07 Month 11 Day

Date of IRB

2025 Year 08 Month 07 Day

Anticipated trial start date

2025 Year 11 Month 01 Day

Last follow-up date

2028 Year 03 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2025 Year 09 Month 04 Day

Last modified on

2025 Year 09 Month 04 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000066839