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Dry eye and diabetes

Carl Erb, Katarzyna Konieczka
Mitochondrial function is closely linked to numerous aspects of eye health. Imbalance between the creation of energy and the development of reactive oxygen species (ROS) seems to be the cause of the development of mitochondrial dysfunctions. As a result of this energy deficit, the level of oxidative stress in the eye tissues increases, leading to numerous ophthalmic impairments. It is important to distinguish between primary mitochondrial eye diseases and secondary mitochondrial changes. Primary mitochondrial eye diseases, for example Leber's hereditary optic atrophy (LHON), retinitis pigmentosa and chronic progressive external ophthalmoplegia are caused by direct damage to mitochondrial function induced by defective genes, either located on mitochondrial DNA (mtDNA) or the DNA of the nucleus (nDNA)...
February 2018: Klinische Monatsblätter Für Augenheilkunde
Andre Ma, Martin Sy Mak, Kendrick Co Shih, Claudia Ky Tsui, Rachel Ky Cheung, Sherman Haynam Lee, Hubert Leung, Joyce Ns Leung, Jason Th Leung, Marco Zhenji Van-Boswell, Michael Tl Wong, Alex Lap-Ki Ng, Chi-Ho Lee, Vishal Jhanji, Louis Tong
Importance Diabetes mellitus is known to be associated with dry eye syndrome (DES), but the effects of long term glycaemic control on tear film metrics and dry eye symptoms are not known in the Chinese population. BACKGROUND: To evaluate tear film stability and dry eye symptoms and their associations with systemic risk factors in Chinese patients with type 2 diabetes (T2DM) Design Cross-sectional study set at the Lo Fong Siu Po Eye Centre (Grantham Hospital), Hong Kong.
January 18, 2018: Clinical & Experimental Ophthalmology
Jing-Hao Qu, Li Li, Lei Tian, Xiao-Yu Zhang, Ravi Thomas, Xu-Guang Sun
BACKGROUND: To study basal epithelial cell (BEC), sub-basal nerve plexus (SBN) and Langerhans cell (LC) density in patients with type 2 diabetes mellitus (T2DM) with corneal punctate epitheliopathy (CPE) and to assess their association with time to healing of CPE. METHODS: Retrospective study of in vivo confocal microscopy (IVCM) in 160 eyes from 160 patients with T2DM diagnosed with CPE due to a single cause. Key exclusion criteria included multiple-causes for CPE or treatment with autologous serum...
January 4, 2018: BMC Ophthalmology
Iain Simpson
This industry update covers the period from 1 September through 30 September 2017, and is based on information sourced from company press releases, scientific literature, patents and various news websites. The month saw the US FDA approve three new molecular entities, Aliqopa (copanlisib dihydrochloride) (Bayer Healthcare); Solosec (secnidazole) (Symbiomix Therapeutics) and Verzenio (abemaciclib) (Eli Lilly and Co). Intarcia Therapeutics Inc. has its application for approval of a novel drug device combination of exenatide for the treatment of diabetes rejected by FDA but said that it will work to address the concerns and refile the application...
January 2018: Therapeutic Delivery
Whitney L Stuard, Rossella Titone, Danielle M Robertson
Purpose: This study investigated the expression of insulin-like growth factor binding protein-3 (IGFBP-3) in basal tears of patients with type 2 diabetes mellitus compared to nondiabetic controls; and correlated tear levels of IGFBP-3 with morphologic changes in the subbasal nerve plexus and density of basal corneal epithelial cells. Methods: This was a single visit, cross-sectional study. Diabetic and control subjects were matched for age, sex, smoking status, and body mass index...
December 1, 2017: Investigative Ophthalmology & Visual Science
P Yerramothu, A K Vijay, M D P Willcox
Inflammasomes, key molecular regulators that play an important role in inflammation, consist of a central protein, an adaptor protein ASC (apoptosis speck-like protein) and a caspase-1 protein. Upon activation, caspase-1 induces maturation of cytokines such as interleukin-1β (IL-1β) and interleukin-18 (IL-18). The release of these cytokines can result in inflammation. Inflammasomes are activated by a variety of factors and their activation involves complex signalling leading to resolution of infection, but can also contribute to the pathology of inflammatory, autoimmune, and infectious diseases...
November 24, 2017: Eye
Geoffrey Burnstock
Purinergic signalling, i.e., the role of nucleotides as extracellular signalling molecules, was proposed in 1972. However, this concept was not well accepted until the early 1990's when receptor subtypes for purines and pyrimidines were cloned and characterised, which includes four subtypes of the P1 (adenosine) receptor, seven subtypes of P2X ion channel receptors and 8 subtypes of the P2Y G protein-coupled receptor. Early studies were largely concerned with the physiology, pharmacology and biochemistry of purinergic signalling...
2017: Frontiers in Pharmacology
Muhammad A Qureshi, Scott J Robbie, Fritz H Hengerer, Gerd U Auffarth, Ina Conrad-Hengerer, Pablo Artal
PURPOSE: To determine safety and visual outcomes in eyes with age-related macular degeneration (AMD) implanted with a novel intraocular lens (IOL) that delivers an optimized retinal image to all macular areas within 10 degrees of retinal eccentricity. METHODS: This was a consecutive case series of 244 eyes with dry/stable wet AMD and logMAR visual acuity ≥0.3 implanted with iolAMD Eyemax monoTM (London Eye Hospital Pharma), a single-piece, injectable, hydrophobic acrylic IOL sited in the capsular bag...
October 5, 2017: European Journal of Ophthalmology
Gebran Khneizer, Ahmad Al-Taee, Meher S Mallick, Bahar Bastani
BACKGROUND: Hyperoxaluria has been associated with nephrolithiasis as well as acute and chronic kidney disease. We present a case of end stage renal failure caused by excessive dietary oxalate intake in a dietary weight loss regimen. CASE PRESENTATION: A 51-year-old Caucasian male with the past medical history of type 2 diabetes mellitus, gout, hypertension and morbid obesity was referred to the primary care clinic after being found pale and easily fatigued. The patient had lost 36 kg over a 7-month period by implementing exercise and intense dietary measures that included 6 meals of spinach, kale, berries, and nuts...
July 2017: Journal of Nephropathology
Mera F Haddad, May M Bakkar, Nour Abdo
BACKGROUND: Cataract, glaucoma, diabetic retinopathy and dry eye disease are common with high prevalence in Jordan. This study aims to assess the awareness of these ocular diseases among Jordanian population. METHOD: A self-designed questionnaire was developed in Arabic and used to interview people in different provinces of Jordan. Socio-demographic data e.g. age, gender and level of education was reported. Public awareness of four ocular diseases; cataract, glaucoma, diabetic retinopathy (DR) and dry eye disease (DED) was assessed...
October 2, 2017: BMC Ophthalmology
Ali M Masmali, Yahya A Maeni, Gamal A El-Hiti, Paul J Murphy, Turki Almubrad
OBJECTIVES: To investigate the ocular tear film in controlled and uncontrolled diabetes mellitus (DM) subjects and the relationship between dry eye and diabetes. METHODS: One hundred twenty-four diabetes adults (65 male and 59 female, with 62 controlled and 62 uncontrolled DM) were assessed by McMonnies dry eye questionnaire, tear break-up time (TBUT), phenol red thread (PRT) test. In addition, tear samples were collected from the lower tear meniscus of right eyes and dried onto glass slides under controlled room temperature (25°C) and humidity (40%)...
September 21, 2017: Eye & Contact Lens
Abdulaziz A Alshamrani, Abdulwahab S Almousa, Abdulrahman A Almulhim, Abdullah A Alafaleq, Mohammed B Alosaimi, Abdulrahman M Alqahtani, Ammar M Almulhem, Mohammed A Alshamrani, Ahmad H Alhallafi, Ismail Z Alqahtani, Abdullah A Alshehri
BACKGROUND: The information about dry eye epidemiology in Saudi Arabia is few in literature. PURPOSE: To estimate the prevalence and identify determinants of dry eye symptoms (DES) in Al-Ahsa, Saudi Arabia. METHODS: Using a multi-stage proportionate sampling technique, Saudis of both genders from 6 urban and 4 rural Primary Health Care centers in Al-Ahsa were enrolled. They were interviewed to gather data on sociodemography, symptoms of dry eye, factors potentially related to dry eye, and chronic comorbidities...
April 2017: Middle East African Journal of Ophthalmology
J Yuan, Y Q Deng
Nowadays, diabetes is quickly emerging as one of the biggest health-related catastrophes over the world. Its impact on people's quality of life has been gradually taken seriously. In the past few years, the connection linking dry eye to diabetes has been substantially confirmed by a series of studies. However, many areas remain uncertain due to the complex and diverse pathogeneses of diabetes related dry eye syndrome. Furthermore, the slow progression of dry eye symptoms easily conceals its connection with diabetes, which brings great challenges to timely diagnosis and effective interventions...
September 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
Haojie Fu, Bin Zhang, Jianliang Tong, Harold Bedell, Hecheng Zhang, Yating Yang, Chaochao Nie, Yingdong Luo, Xiaoling Liu
PURPOSE: To measure visual acuity and metamorphopsia in patients with age-related macular degeneration (AMD) and to explore their relationship with macular lesions. METHODS: In this cross-sectional study, a total of 32 normal subjects (32 eyes) and 35 AMD patients (35 eyes) were recruited. They were categorized into 4 groups: normal, dry AMD, non-active wet AMD, and active wet AMD. Best-corrected visual acuity (BCVA) was measured using the Early Treatment Diabetic Retinopathy Study protocol...
2017: PloS One
Ebtisam Elghblawi
The clinical application of platelet-rich plasma (PRP) is based on the increase in the concentration of growth factors that are released from alpha-granule of the concentrated platelets and in the secretion of proteins which are able to capitalize on the healing process at the cellular level. It has been invented to restore the natural beauty by starting the natural rejuvenation process of the skin and aiming to make it function as a younger one and to keep the skin youthful and maintain it. Besides that, it is also emerged to include hairs as a new injectable procedure to enable stimulating hair growth locally and topically; preventing its fall; improving hair shaft, hair stem, and its caliber; increasing its shine, vitality, and pliability; and declining hair splitting and breakage...
September 8, 2017: Journal of Cosmetic Dermatology
Tyler G Rowsey, Dimitrios Karamichos
Corneal diseases are an extensive cause of blindness worldwide and continue to persist as a challenging public health concern. Recently, various lipid-based therapies have been advocated for the modulation of corneal diseases; however, the number of studies is still very limited. Here we focus on developments and challenges on lipid-based therapies for dry eye disease, diabetic neuropathy, and Fuchs' endothelial corneal dystrophy. All three diseases are highly prevalent conditions and involve corneal stress and inflammation...
December 2017: Clinical and Translational Medicine
Geoffrey Burnstock
This review is focused on the pathophysiology and therapeutic potential of purinergic signalling. A wide range of diseases are considered, including those of the central nervous system, skin, kidney, musculoskeletal, liver gut, lower urinary tract, cardiovascular, airways and reproductive systems, the special senses, infection, diabetes and obesity. Several purinergic drugs are already on the market, including P2Y12 receptor antagonists for stroke and thrombosis, P2Y2 receptor agonists for dry eye, and A1 receptor agonists for supraventricular tachycardia...
July 21, 2017: Biochemical Pharmacology
Iain Simpson
This Industry Update covers the period from 1 through 30 April 2017, and is based on information sourced from company press releases, scientific literature, patents and various news websites. Biogen expanded its portfolio of developmental drugs targeting neurological diseases by licensing a drug from Bristol-Myers Squibb which is currently under investigation for the treatment of progressive supranuclear palsy. Takeda announced a deal with NuBiyota focused on developing treatments for gastrointestinal disorders, based on the manipulation of microbes living in the gut...
July 2017: Therapeutic Delivery
Maierhaba Yusufu, Xin Liu, Tianyu Zheng, Fan Fan, Jianjiang Xu, Yi Luo
PURPOSE: To assess the effect of hydroxypropyl methylcellulose (HPMC) 2% to prevent dry eye during phacoemulsification in senile and diabetic patients. METHODS: This prospective interventional case series comprised 60 eyes (44 patients) with age-related cataract scheduled for standardized phacoemulsification surgery. The patients were assigned to receive either balanced saline solution (BSS, 30 eyes) or HPMC 2% (30 eyes) during surgery. Preoperative and postoperative examinations (1, 3, 7 and 30 days) included measurements of automatic noninvasive tear film breakup time (NITBUT), fluorescein staining, Schirmer I test, tear meniscus height, depth and area and subjective symptoms...
July 11, 2017: International Ophthalmology
Abdullah Omar Al Houssien, Rana Omar Al Houssien, Abdulaziz Al-Hawass
PURPOSE: To study the magnitude of chronic diseases among patients suffering from Dry Eye Syndrome (DES) and compare them with published findings in the literature. METHODS: Patients diagnosed in 2016 suffering from DES based on presenting symptoms and findings of ocular examination were included in this study. The demographic information included age and gender. Chronic diseases among them were identified through case records, assessment and ongoing medications...
April 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
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