Near-infrared Light (NIR) Therapy for Diabetic Macular Edema: A Pilot Study

Diabetic Macular Edema Clinical Trial

— NIR  

Official title:

Phase 1 Study To Determine the Effects of Short Term Near-infrared Light (NIR) Therapy on Anatomic and Functional Abnormalities of Diabetic Macular Edema, and Assess Safety of Short Term Near-infrared Light Therapy in Eyes With Diabetic Macular Edema.

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00846092
• Other study ID #: NIR for Diabetic Maculopathy
• Status: Completed
• Phase: Phase 1
• First received: February 16, 2009
• Last updated: September 20, 2013
• Start date: November 2007
• Est. completion date: February 2013

Study information

• Verified date: September 2013
• Source: Medical College of Wisconsin
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Institutional Review Board
• Study type: Interventional

Clinical Trial Summary

Summary of Study Rationale Near-infrared light (NIR) via light-emitting diodes (LED) treatment promotes retinal healing and improve visual function following high intensity laser retinal injury by augmenting cellular energy metabolism, enhances mitochondrial function, increases cytochrome C oxidase activity, stimulates antioxidant protective pathways, and promotes cell survival. LED directly benefits injured neurons in the retina, the lateral geniculate nucleus, and the visual cortex, where perception occurs. From a public health perspective, a Light-Emitting Diode (LED) Array study is important to conduct because it has been approved as a non-significant risk (NSR) device for treatment of eye disorders, it has a low cost of treatment, and it may serve as an effective, non-invasive alternative or adjunctive treatment to laser photocoagulation, the current standard of care for DME.

Study Objectives and Hypotheses

1. To determine the effects of short term (3 month) near-infrared light (NIR) therapy on anatomic and functional abnormalities of diabetic macular edema as assessed by visual acuity, optical coherence tomography, multifocal electroretinography (mERG) and fundus bimicroscopy.

2. To assess safety of short term near-infrared light therapy in eyes with diabetic macular edema.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 4
• Est. completion date: February 2013
• Est. primary completion date: February 2013
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Age >= 18 years Subjects <18 years old are not being included because DME is so rare in this age group that the diagnosis of DME may be questionable.

2. Diagnosis of diabetes mellitus (type 1 or type 2)

• Any one of the following will be considered to be sufficient evidence that diabetes is present: Current regular use of insulin for the treatment of diabetes Current regular use of oral anti-hyperglycemia agents for the treatment of diabetes Documented diabetes by ADA and/or WHO criteria (see Procedures Manual for definitions)

3. At least one eye meets the study eye criteria.

4. Fellow eye meets criteria.

5. Able and willing to provide informed consent.

6. Any candidate identified by a study investigator as being able to successfully tolerate a 3 month deferral of laser photocoagulation.

Exclusion Criteria:

7. Significant renal disease, defined as a history of chronic renal failure requiring dialysis or kidney transplant.

8. Subjects in poor glycemic control who, within the last 4 months, initiated intensive insulin treatment (a pump or multiple daily injections) or plan to do so in the next 4 months should not be enrolled.

9. Participation in an investigational trial within 30 days of NIR participation that involved treatment with any drug that has not received regulatory approval at the time of study entry.

• Note: subjects cannot receive another investigational drug while participating in the study during the first 6 months...

10. Major surgery within 28 days prior to participation or major surgery planned during the next 6 months.

• Major surgery is defined as a surgical procedure that is more extensive than fine needle biopsy/aspiration, placement of a central venous access device, removal/biopsy of a skin lesion, or placement of a peripheral venous catheter.

11. Subject is expecting to move out of the area during the 6 months of the study.

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Diabetic Macular Edema
• Edema
• Macular Edema

Intervention

Device:
• Warp 10 LED Device
Study Subjects will take the Warp 10 (LED) home and treat twice per day for three months
• Near-infrared light (NIR)
Subjects will be exposed to light emitted from LED's at wavelengths of 670 nm (+/-15nm) with a minimum exposure of 4 J/cm2 (4.0 - 7.68J/cm2). This is accomplished by applying the 50 mW/cm2 (50 - 80 mw/cm2) LED-generated light to the study eye. Treatments involve application of the LED-generated light for 80 seconds, twice daily.

Locations

Country	Name	City	State
United States	Medical College of Wisconsin	Milwaukee	Wisconsin

Sponsors (2)

Lead Sponsor	Collaborator
Medical College of Wisconsin	The New York Eye & Ear Infirmary

Country where clinical trial is conducted

United States, 

References & Publications (22)

Beauvoit B, Kitai T, Chance B. Contribution of the mitochondrial compartment to the optical properties of the rat liver: a theoretical and practical approach. Biophys J. 1994 Dec;67(6):2501-10. — View Citation

Early photocoagulation for diabetic retinopathy. ETDRS report number 9. Early Treatment Diabetic Retinopathy Study Research Group. Ophthalmology. 1991 May;98(5 Suppl):766-85. — View Citation

Eells JT, Henry MM, Summerfelt P, Wong-Riley MT, Buchmann EV, Kane M, Whelan NT, Whelan HT. Therapeutic photobiomodulation for methanol-induced retinal toxicity. Proc Natl Acad Sci U S A. 2003 Mar 18;100(6):3439-44. Epub 2003 Mar 7. — View Citation

Eells JT, Wong-Riley MT, VerHoeve J, Henry M, Buchman EV, Kane MP, Gould LJ, Das R, Jett M, Hodgson BD, Margolis D, Whelan HT. Mitochondrial signal transduction in accelerated wound and retinal healing by near-infrared light therapy. Mitochondrion. 2004 Sep;4(5-6):559-67. — View Citation

Intensive blood-glucose control with sulphonylureas or insulin compared with conventional treatment and risk of complications in patients with type 2 diabetes (UKPDS 33). UK Prospective Diabetes Study (UKPDS) Group. Lancet. 1998 Sep 12;352(9131):837-53. Erratum in: Lancet 1999 Aug 14;354(9178):602. — View Citation

Karu T. Primary and secondary mechanisms of action of visible to near-IR radiation on cells. J Photochem Photobiol B. 1999 Mar;49(1):1-17. Review. — View Citation

Klein R, Klein BE, Moss SE, Davis MD, DeMets DL. The Wisconsin epidemiologic study of diabetic retinopathy. IV. Diabetic macular edema. Ophthalmology. 1984 Dec;91(12):1464-74. — View Citation

Kowluru RA, Atasi L, Ho YS. Role of mitochondrial superoxide dismutase in the development of diabetic retinopathy. Invest Ophthalmol Vis Sci. 2006 Apr;47(4):1594-9. — View Citation

Kowluru RA, Kowluru V, Xiong Y, Ho YS. Overexpression of mitochondrial superoxide dismutase in mice protects the retina from diabetes-induced oxidative stress. Free Radic Biol Med. 2006 Oct 15;41(8):1191-6. Epub 2006 Feb 6. — View Citation

Liang HL, Whelan HT, Eells JT, Meng H, Buchmann E, Lerch-Gaggl A, Wong-Riley M. Photobiomodulation partially rescues visual cortical neurons from cyanide-induced apoptosis. Neuroscience. 2006 May 12;139(2):639-49. Epub 2006 Feb 7. — View Citation

Moss SE, Klein R, Klein BE. Ten-year incidence of visual loss in a diabetic population. Ophthalmology. 1994 Jun;101(6):1061-70. — View Citation

Moss SE, Klein R, Klein BE. The 14-year incidence of visual loss in a diabetic population. Ophthalmology. 1998 Jun;105(6):998-1003. — View Citation

Nyengaard JR, Ido Y, Kilo C, Williamson JR. Interactions between hyperglycemia and hypoxia: implications for diabetic retinopathy. Diabetes. 2004 Nov;53(11):2931-8. — View Citation

Obrosova IG, Stevens MJ, Lang HJ. Diabetes-induced changes in retinal NAD-redox status: pharmacological modulation and implications for pathogenesis of diabetic retinopathy. Pharmacology. 2001;62(3):172-80. — View Citation

Retinopathy and nephropathy in patients with type 1 diabetes four years after a trial of intensive therapy. The Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications Research Group. N Engl J Med. 2000 Feb 10;342(6):381-9. Erratum in: N Engl J Med 2000 May 4;342(18):1376. — View Citation

The effect of intensive treatment of diabetes on the development and progression of long-term complications in insulin-dependent diabetes mellitus. The Diabetes Control and Complications Trial Research Group. N Engl J Med. 1993 Sep 30;329(14):977-86. — View Citation

Weinberger D, Axer-Siegel R, Landau D, Yassur Y. Retinal thickness variation in the diabetic patient measured by the retinal thickness analyser. Br J Ophthalmol. 1998 Sep;82(9):1003-6. — View Citation

Whelan HT, Buchmann EV, Dhokalia A, Kane MP, Whelan NT, Wong-Riley MT, Eells JT, Gould LJ, Hammamieh R, Das R, Jett M. Effect of NASA light-emitting diode irradiation on molecular changes for wound healing in diabetic mice. J Clin Laser Med Surg. 2003 Apr;21(2):67-74. — View Citation

Whelan HT, Connelly JF, Hodgson BD, Barbeau L, Post AC, Bullard G, Buchmann EV, Kane M, Whelan NT, Warwick A, Margolis D. NASA light-emitting diodes for the prevention of oral mucositis in pediatric bone marrow transplant patients. J Clin Laser Med Surg. 2002 Dec;20(6):319-24. — View Citation

Whelan HT, Smits RL Jr, Buchman EV, Whelan NT, Turner SG, Margolis DA, Cevenini V, Stinson H, Ignatius R, Martin T, Cwiklinski J, Philippi AF, Graf WR, Hodgson B, Gould L, Kane M, Chen G, Caviness J. Effect of NASA light-emitting diode irradiation on wound healing. J Clin Laser Med Surg. 2001 Dec;19(6):305-14. Review. — View Citation

Wong-Riley MT, Bai X, Buchmann E, Whelan HT. Light-emitting diode treatment reverses the effect of TTX on cytochrome oxidase in neurons. Neuroreport. 2001 Oct 8;12(14):3033-7. — View Citation

Wong-Riley MT, Liang HL, Eells JT, Chance B, Henry MM, Buchmann E, Kane M, Whelan HT. Photobiomodulation directly benefits primary neurons functionally inactivated by toxins: role of cytochrome c oxidase. J Biol Chem. 2005 Feb 11;280(6):4761-71. Epub 2004 Nov 22. — View Citation

* Note: There are 22 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Excess retinal thickness on OCT at 1 month, 3 months and 6 months. goal = reduce excess thickness by at least 50%		1 month, 3 months and 6 months	No