Clinical trial

Impact of Metabolic Health on Sperm Epigenetic Marks in Humans

Active, not recruiting · Not applicable · 1 countries · Registry ID NCT03860558

Active, not recruitingNot applicableInterventional

What this study is about

This study is designed to evaluate whether epigenetic markers in overweight men with type 1 diabetes (T1D) or type 2 diabetes (T2D) can be improved with a 3 month lifestyle intervention or program focused in glycemic intervention.

A promising-looking record is not the same as confirmed eligibility. The study team must review the full criteria and current recruitment status.

Basic eligibility

Age18 Years to 65 Years
SexMale
Healthy volunteersAccepted
ConditionOverweight, Type 2 Diabetes Mellitus, Type 1 Diabetes Mellitus

Full registry criteria

Inclusion Criteria: * Male, age 18-65 years * Willing and able to provide informed consent and follow all study procedures, including providing sperm specimens 3 months apart. * Type 1 or type 2 diabetes diagnosis confirmed by an endocrinologist (for participants in the diabetes groups) * HbA1c \> 7% (for participants in the diabetes groups) * Overweight (BMI \> 25 kg/m2) (for all groups, to ensure groups are similar) Exclusion Criteria: * Chronic kidney disease stage 4 or 5 (including end-stage renal disease); * Hepatic disease, including serum alanine transaminase (ALT) or aspartate aminotransferase (AST) greater than or equal to 3 times the upper limit of normal; hepatic synthetic insufficiency as defined as serum albumin \< 3.0 g/dL; or serum bilirubin \> 2.0; * Severe diabetic retinopathy; * Congestive heart failure, New York Heart Association (NYHA) class II, III or IV; * History of myocardial infarction, unstable angina or revascularization within the past 6 months; * Active genitourinary infection; * Testicular volume \<12 mL (assessed using Prader orchidometer); * Hypogonadism, defined as total testosterone \<250 ng/dl; * Hyperprolactinemia, defined as prolactin \>18 ng/ml; * Hyperestrogenism, defined as estradiol \>42 pg/ml; * Cryptorchidism; * Cigarette smoking; * Active alcohol abuse or substance abuse; * Cancer (except localized non-melanoma skin cancers) or use of chemotherapy agents within 5 years; * Use of nitrates or guanylate cyclase stimulators; * Use of steroid hormones (including testosterone), other than inhalers for reactive airway disease

Treatments and study arms

Lifestyle Intervention

Other

Participants will undergo a 12-week multidisciplinary program for weight control and intensive diabetes management. The program includes adjustments to diabetes medications to enhance weight reduction and improve glycemia, dietary modification, and activity instructions.

No Intervention

Other

Participants will not undergo an intervention.

Primary outcomes

Spermatozoa concentration1 year

Sperm will be assessed for concentration, reported as total yield (millions per ml)

Study locations

1 locations were listed when this page was built. The first 40 are shown.

Joslin Diabetes Center🇺🇸 Boston, Massachusetts, United States