Drug Delivery Strategies and Nanozyme Technologies to Overcome Limitations for Targeting Oxidative Stress in Osteoarthritis.

Oxidative stress is an important, but elusive, therapeutic target for osteoarthritis (OA). Antioxidant strategies that target oxidative stress through the elimination of reactive oxygen species (ROS) have been widely evaluated for OA but are limited by the physiological characteristics of the joint. Current hallmarks in antioxidant treatment strategies include poor bioavailability, poor stability, and poor retention in the joint. For example, oral intake of exogenous antioxidants has limited access to the joint space, and intra-articular injections require frequent dosing to provide therapeutic effects. Advancements in ROS-scavenging nanomaterials, also known as nanozymes, leverage bioactive material properties to improve delivery and retention. Material properties of nanozymes can be tuned to overcome physiological barriers in the knee. However, the clinical application of these nanozymes is still limited, and studies to understand their utility in treating OA are still in their infancy. The objective of this review is to evaluate current antioxidant treatment strategies and the development of nanozymes as a potential alternative to conventional small molecules and enzymes.

An Unusual Case of Type 2 Fronto-Ethmoidal Mucopyocele.

Mucoceles of the paranasal sinuses are epithelium-lined cystic masses that develop when the sinus ostia get obstructed. They most frequently occur in the frontal and ethmoid sinuses. The paranasal sinus mucoceles' proximity to the orbit and skull base renders the patient at risk for substantial morbidity. Mucoceles have reactive bone growth, bleeding, fibrosis, and granulation tissue, which are histological traits of respiratory mucosa. The conventional therapy is surgical excision, with endoscopic procedures becoming more popular. A 60-year-old female patient reported to the ENT outpatient clinic complaining of swelling over the medial aspect of her left eye that had begun slowly and progressed over a year. Although there were no neurological, ocular, nasal, or facial symptoms clinically, radiological and cytological examinations aided us in arriving at the definitive diagnosis. The patient in this scenario had an infected mucocele and left medial canthal swelling with no visual impairment, which made it challenging to reach an accurate diagnosis. However, radiological evaluation and cytological examination focused on establishing a definitive diagnosis.

Otogenic Brain Abscess: Judicious Management in a Case of Chronic Suppurative Otitis Media.

Intracranial consequences from chronic otitis media can be dreadful. Meningitis is the most frequent complication followed by a cerebral abscess. In this pre-antibiotic era, otogenic brain abscess is rare, but it poses one of the life-threatening complications of otitis media. In recent years, brain abscess was noticed almost only in patients of chronic Otitis media with cholesteatoma. A case of a 36-year-old non-diabetic male patient with an otogenic cerebellar abscess, who presented with no cerebellar signs and unique intraoperative ossicular chain status was successfully managed by a combined approach of otolaryngology and neurosurgery, is presented in this report.

Revisiting "Meniere's Disease" as "Cervicogenic Endolymphatic Hydrops" and Other Vestibular and Cervicogenic Vertigo as "Spectrum of Same Disease": A Novel Concept.

Vertigo and dizziness are one of the commonest and least understood symptom. Vestibular vertigo of Meniere's disease and Benign Paroxysmal positional vertigo (BPPV) and cervicogenic dizziness are classified as separate entities. Cervicogenic dizziness is not considered the domain of Otolaryngologists, as it is mainly related to neck proprioceptors. Headache and neck pain, have been found to be associated with both Meniere's disease and BPPV, so is cervicogenic dizziness. The present study was undertaken to study the association between cervical signs and symptoms in patients with Vestibular Vertigo of Meniere's disease, Benign Paroxysmal Positional Vertigo and cervicogenic dizziness. 132 patients complaining of vertigo and diagnosed with Meniere's disease, BPPV or cervicogenic dizziness were examined for symptoms and signs related to neck, shoulder and muscle tightness and asymmetry. Most of the patients of Meniere's Disease (80% for unilateral and 88.23% for bilateral), Benign Paroxysmal Positional Vertigo (75%for right sided BPPV, 66.67% for left sided BPPV) and cervicogenic dizziness (90%) had associated symptoms of neck pain or headache, and were found to be positive for neck tightness and/or asymmetry of shoulder. Headache was more common in patients with Meniere's Disease. Vestibular Dizziness of Meniere's Disease, Benign Paroxysmal Positional Vertigo and Cervicogenic Dizziness may be spectrum of the same disease with underlying myofascial problems. Meniere's Disease of Idiopathic or primary type needs to be revisited as Cervicogenic Hydrops.