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Introduction: Microbiome research has grown exponentially but the ocular surface microbiome (OSM) remains an area in need of further study. This review aims to explore its complexity, disease-related microbial changes, and immune interactions, and highlights the potential for its manipulation as a therapeutic for ocular surface diseases. Areas Covered: We introduce the OSM by location and describe what constitutes a normal OSM. Second, we highlight aspects of the ocular immune system and discuss potential immune microbiome interactions in health and disease. Finally, we highlight how microbiome manipulation may have therapeutic potential for ocular surface diseases. Expert Opinion: The ocular surface microbiome varies across its different regions, with a core phyla identified, but with genus variability. A few studies have linked microbiome composition to diseases like dry eye but more research is needed, including examining microbiome interactions with the host. Studies have noted that manipulating the microbiome may impact disease presentation. As such, microbiome manipulation via diet, oral and topical pre and probiotics, and hygienic measures may provide new therapeutic algorithms in ocular surface diseases.
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Introduction The use of androgenic anabolic steroids (AAS) negatively affects male fertility by disrupting hormone release and reducing testosterone levels. Despite this, many men using steroids are unaware of fertility-related consequences. We aimed to determine the factors associated with AAS resumption during fertility treatment, specifically focusing on the duration, age, and dosage of AAS use prior to treatment. Our study, the first of its kind, investigated risk factors for resuming AAS following fertility assessment. Methods We conducted a retrospective review of adult men diagnosed with infertility due to chronic AAS use between 2012 and 2022 at the University of Miami. The study included men with azoospermia or severe oligospermia who were instructed to stop using AAS. Excluded were those who underwent orchiectomy for benign or malignant conditions. We collected data on demographic characteristics, AAS route details, fertility treatments, and AAS resumption. We hypothesized that risk factors for restarting AAS would include duration of AAS use, type of AAS, pre-treatment testosterone levels, and increased age. Results We identified 94 men with infertility caused by AAS use. Among them, 31 (33.0%) resumed AAS therapy within eight months after cessation. The median age of men who restarted AAS was 40 years. Those who resumed AAS had used it for a longer duration prior to fertility assessment compared to those who did not (60 months vs. 17 months, respectively). However, we found no statistically significant differences in age, duration of AAS use, AAS administration details, or serum testosterone levels at the time of initial assessment. Conclusion In conclusion, most men seeking fertility assessment due to AAS abuse did not resume testosterone therapy. However, those who did restart AAS had a longer history of AAS use. Future high-quality prospective studies are needed to better understand the risk factors associated with resuming AAS in male infertility caused by anabolic steroids.
