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Glaucoma Diagnosis of the Optic Nerve Head Using Optical Coherence Tomography - Significance of Bruch's Membrane Opening and Derived OCT Parameters.

BACKGROUND: With the introduction of optical coherence tomography (OCT) in glaucoma imaging, the neuroretinal tissue of the retina and optic nerve head can be measured and quantified at different measuring points, much more accurately than with previous imaging techniques. In addition to macular parameters such as the macular and peripapillary thickness of the retinal nerve fibre thickness and the macular ganglion cell layer thickness, parameters close to the papillary were also defined, as based on the Bruch's membrane opening (BMO), and examined with regard to their suitability for glaucoma

Reconstructing defects following radical parotidectomy using superficial circumflex Iliac perforator flaps.

BACKGROUND: The restoration of tissue defects following radical parotidectomy poses significant challenges due to the complex anatomy and functional requirements of the region. The superficial circumflex iliac perforator (SCIP) flap presents several advantages, including its adjustable volume, the potential for chimerism with bone, and the ability to conceal scarring. This study was conducted to assess the effectiveness and safety of SCIP flaps in reconstructing defects after radical parotidectomy. METHODS: This retrospective study included patients who underwent reconstruction of defects aft

Antagonizing NK-1R modulates pain perception following corneal injury.

Substance P (SP) expressed by corneal nerves, is an 11-amino acid long neuropeptide from the tachykinin family, encoded by the Tac1 gene, and binds to neurokinin receptors. SP overexpression is associated with various pathological responses in the cornea including vasodilation, pain, inflammation, and angiogenesis in the normally avascular tissue. This study investigates the role of neurokinin-1 receptor (NK-1R) mediated signaling in nociception, nerve regeneration, and neuronal activation following mechanical corneal injury in mice. Corneal injuries were induced in age- and sex-matched C57BL/

AI-assisted recurrent laryngeal nerve identification during endoscopic/robotic thyroid surgery based on the CMC-UNet model: a multicenter retrospective study.

During endoscopic or robotic-assisted thyroid surgery, the field of view may be restricted by tissue swelling or bleeding. These Limitations make delicate surgical manipulation in the confined space more challenging. This study proposes an artificial intelligence model designed to identify the recurrent laryngeal nerve. During thyroid surgery and thereby reduce the risk of accidental injury. This study retrospectively collected imaging data from three tertiary care hospitals, comprising 7482 images from 103 patients. The model relied on this dataset to optimize training. A variety of improveme

Новый биомаркер оптической совместимости для диагностики острого оптического неврата в множестве склерозов.

ЦЕЛЬ: Ценна ли съемка ретроламинарного оптического нерва во время атаки острого оптического неврата в множественных склерозах? МЕТОДЫ: Это перспективное исследование серии наблюдений. Twenty two Пациенты, набранные в клиниках Университета Аль-Азхар и благотворительном центре < < Глазный центр > > Эль-Мустафа, Каир; с октября 2022 по февраль 2024. Пациенты были названы, так как у них развился приступ острого оптического неврита. Полные офтальмологические и неврологические обследования были проведены для всех пациентов внутри 2 недель острого оптического неврата. Изображение перипапо

Совпадение в аннотации оригинала
OBJECTIVES: Is imaging of retrolaminar optic nerve, during attack of acute optic neuritis in multiple sclerosis valuable? METHODS: This is … edian = 0.30) than in the fellow eyes (median = 0.70), p = 0.007. Homogeneity of retrolaminar optic nerve tissue was altered in the optic neuritis eyes. OCT showed myelin aggregates as round or oval hyper-reflective foci in the optic neuritis eyes (95 % confidence interval: 2.90 [2.19-3.61]), that were not presented in the fellow eyes, p = 0.000. CONCLUSION: …

Development of a near infrared region based non-invasive therapy device for diabetic peripheral neuropathy.

Diabetic Peripheral Neuropathy (DPN) is a nerve damage that is treated with painkillers and steroids which have the drawback of interference with other medications and the dangers of side effects. Novelty of the proposed work is to develop a Near Infrared Region (NIR) based non-invasive therapy device called 'DPNrelief-1.0V'developed with a 890 nm wavelength diodes. DPNrelief-1.0V delivers a total dosage of 6.174 J/cm2 with heat absorption by tissue of 61.74 Joules at 30 minutes. The device was tested by carrying out a pilot study with 8 patients where 4 were treatment group and control group.

Ultrasound-Guided Pulsed Radiofrequency Treatment for Superficial Peroneal Nerve Entrapment in a Professional Handball Player.

Peripheral nerve injury in athletes is rare but deleterious to their performance, entrapment being one of the most frequent causes. Isolated injury to the superficial peroneal nerve (SPN) is rare and often underdiagnosed. The authors reported a clinical case of a 34-year-old handball athlete who presented with neuropathic pain in the inferolateral third of the leg and dorsum of the foot, with three months of evolution, after an ankle sprain, refractory to conservative treatment. After clinical assessment and ultrasound investigation, it was considered that the pain source was likely to be an S

The Regenerative Potential of Therapeutic Ultrasound on Neural Tissue: A Pragmatic Review.

OBJECTIVES: Low-intensity ultrasound (LIU)/low-intensity pulsed ultrasound (LIPUS) may influence nerve tissue regeneration and axonal changes in the context of carpal tunnel syndrome (CTS) and in the animal model. The purpose of this pragmatic review is to understand the current knowledge for the effects of low-intensity therapeutic ultrasound in the animal and human model and determine the future directions of this novel field. DESIGN: Pragmatic review. METHODS: We performed a literature search of available material using OVID, EmBase, and PubMed for LIU/LIPUS, all of which were preclinical…

Analgesia and anesthesia using the pericapsular nerve group block in hip surgery and hip fracture: a scoping review.

INTRODUCTION: Pericapsular nerve group (PENG) block is a novel regional analgesia technique to reduce pain after hip surgery and hip fractures. This review was conducted to summarize current literature. METHODS: A scoping review was carried out using the Joanna Briggs Institute framework. All articles describing the use of PENG block as a regional analgesia and/or anesthesia technique for hip pain were considered eligible for inclusion. Ovid Medline, Embase, CINAHL, PubMed and Google Scholar were searched. Adult and pediatric studies were included. Excluded were articles not available in Engl

Co-transplantation of Epidermal Neural Crest Stem Cells and Olfactory Ensheathing Cells Repairs Sciatic Nerve Defects in Rats.

Cell-based therapy is an alternative strategy to improve outcomes of peripheral nerve injury (PNI). Epidermal neural crest stem cell (EPI-NCSC) is obtained from autologous tissue without immunological rejection, which could expand quickly in vitro and is suitable candidate for cell-based therapy. Olfactory ensheathing cell (OEC) could secrete multiple neurotrophic factors (NTFs), which is often used to repair PNI individually. However, whether the combination of EPI-NCSC and OEC have better effects on PNI repair remains unclear. Here we use EPI-NCSC and OEC co-transplantation in a rat sciatic

Evaluation of specific neural marker GAP-43 and TH combined with Masson-trichrome staining for forensic autopsy cases with old myocardial infarction.

It has been a puzzling forensic task to determine the cause of death as a result of old myocardial infarction (OMI) in the absence of recognizable acute myocardial infarction. Recent studies indicated that the heterogeneous cardiac nerve sprouting and sympathetic hyperinnervation at border zones of the infarcted site played important roles in sudden cardiac death (SCD). So, the present study explored the value of growth associated protein-43 (GAP-43) and tyrosine hydroxylase (TH) as objective and specific neural biomarkers combined with Masson-trichrome staining for forensic autopsy cases. Myo

Subparaneurial ganglion cysts of the fibular and tibial nerves: A new variant of intraneural ganglion cysts.

Over the last decade, the mechanism of formation of intraneural ganglion cysts has been established through a meticulous review of clinical findings and correlation with patterns produced on magnetic resonance imaging (MRI). Pathognomonic imaging patterns distinguish these rare lesions from the more common extraneural variants in almost all cases. In this report, we present a new pattern of cyst occurrence in the subparaneurial compartment of the nerve and provide potential anatomic explanations for its pathogenesis. Using an anatomic framework of connective tissue compartments of the nerve, w

[Resection of brainstem cavernous malformations via lateral approaches].

OBJECTIVE: To explore the surgical indications and efficacy of lateral approaches in the removal of brainstem cavernous malformations retrospectively. METHODS: From July 1999 to June 2008, 10 cases of brainstem cavernous malformations were removed via lateral approaches. Four of them had reached the lateral pial surface and 6 were covered by parenchyma or glial tissue. Three lesions were located dorsal to the cranial nerve roots and 4 lesions rostral to the facial nerve root. All 7 lesions were removed via the retrosigmoidal approach. Far lateral approach was used for 2 cases with the lesions

Long-term vascular access ports as a means of sedative administration in a rodent fMRI survival model.

The purpose of this study is to develop a rodent functional magnetic resonance imaging (fMRI) survival model with the use of heparin-coated vascular access devices. Such a model would ease the administration of sedative agents, reduce the number of animals required in survival experiments and eliminate animal-to-animal variability seen in previous designs. Seven male Sprague-Dawley rats underwent surgical placement of an MRI-compatible vascular access port, followed by implantable electrode placement on the right median nerve. Functional MRI during nerve stimulation and resting-state functiona

Early cellular signaling responses to axonal injury.

BACKGROUND: We have used optic nerve injury as a model to study early signaling events in neuronal tissue following axonal injury. Optic nerve injury results in the selective death of retinal ganglion cells (RGCs). The time course of cell death takes place over a period of days with the earliest detection of RGC death at about 48 hr post injury. We hypothesized that in the period immediately following axonal injury, there are changes in the soma that signal surrounding glia and neurons and that start programmed cell death. In the current study, we investigated early changes in cellular signali

Effect of skin thickness on sensory nerve action potential amplitude.

OBJECTIVE: It has been shown that finger circumference negatively correlates with sensory nerve action potential amplitude (SNAP-A). Also fat people have lower sensory nerve amplitudes. Factors that cause electrodes displaced further away from underlying nerves, such as increased cutaneous and subcutaneous tissue, will lower SNAP-A. This study was designed to evaluate correlation between skin thickness and SNAP amplitude. METHODS: Thirty-seven healthy 22-40-year-old subjects were selected. Nineteen (51.4%) were males and 18 (48.6%) were females, without significant difference between males an

Skin blister and skin biopsy to quantify epidermal nerves: a comparative study.

BACKGROUND: Skin biopsy is an important procedure for the diagnosis of peripheral neuropathy. The main indicators of unmyelinated nerve involvement are decreased density and abnormal morphology of epidermal nerve fibers (ENFs). The suction skin blister is an alternative, less invasive method to visualize and quantify ENFs. The blister roof provides an integrated bird's eye view of all ENFs within one tissue specimen. OBJECTIVE: We compared the suction skin blister method to the punch skin biopsy for evaluation of ENFs. METHODS: Twenty-five volunteers, 35 to 62 years old, without symptoms or

Surgical management of cavernous malformations involving the cranial nerves.

OBJECTIVE: To analyze the indications and techniques pertinent to the treatment of cranial nerve (CN) cavernous malformations (CMs). METHODS: CN CMs are lesions isolated to the CNs. CMs affecting the optic nerve (CN II), oculomotor nerve (CN III), facial/vestibulocochlear complex (CN VII and CN VIII), and hypoglossal nerve (CN XII) have been described. The records for six patients were reviewed with respect to lesion location, symptoms, surgical approach, and therapeutic considerations. This is the largest series of CMs isolated to CNs reported to date. RESULTS: Three female patients and thr

Developmental changes in chemoreceptor nerve activity and catecholamine secretion in rabbit carotid body: possible role of Na+ and Ca2+ currents.

In order to better understand the post-natal increase in peripheral chemoreceptor responsiveness to hypoxia, chemoreceptors of newborn (1-2 days) and older (10-12 days, 30 days, adult) rabbits were isolated and superfused, in vitro. The free tissue catecholamine concentration was measured using carbon-fiber voltammetry and pauci-fiber nerve activity was recorded from the sinus nerve during stimulation (4 min) with graded hypoxia or increased potassium. Both the peak catecholamine and peak nerve responses to stimulation with 10% and 0% oxygen increased with age, particularly between 10 and 30 d

Diagnosis and management of neurological sarcoidosis.

BACKGROUND: Neurological involvement is a significant cause of morbidity and mortality in patients with sarcoidosis. Detection and management of neurosarcoidosis remains problematic. Our interest in immunosuppressive agents for chronic sarcoidosis has given us experience with various agents for the treatment of sarcoidosis, including cyclophosphamide and methotrexate. METHODS: We analyzed all patients with sarcoidosis seen in our clinic during a 10-year period. Evaluation for neurological disease included routine physical examination. Magnetic resonance imaging, cerebral spinal fluid analysis