Κυριακή 9 Ιανουαρίου 2022

Evaluation of Hearing Loss in Congenital Hypothyroid Children at a Tertiary Care Hospital in Central India

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Abstract

Hearing loss has long been associated with congenital hypothyroidism and, if not noticed and treated early, may result in delayed language acquisition and difficulties in comprehension. In light of the implications of congenital hypothyroidism and its associated hearing loss, we decided to conduct this study. The aim of this study was to identify the prevalence of hearing loss in congenital hypothyroidism and its relation to the severity of the disease and age of initiation of treatment. This study was conducted from July 2016 to June 2021 at a tertiary care hospital in Bhopal. The hearing status of congenital hypothyroid children and matched controls was assessed by pure tone audiometry or free field audiometry and, in selected cases, with brainstem evoked response audiometry. Eight children (25%) with congenital hypothyroidism had hearing loss, compared to one (3.12%) in the control group (p < 0.05). No statistically significant difference has b een found in the gender, mean age of diagnosis, mean age of initiation of levothyroxine treatment, mean screening FT4 levels, and mean screening TSH levels between congenital hypothyroid children with and without hearing loss. Due to the high prevalence of hearing loss in congenital hypothyroidism and its impact on language and cognitive development, it is critical to create awareness among healthcare professionals that children diagnosed with congenital hypothyroidism must undergo audiological evaluation at the time of diagnosis and periodically thereafter. Alternatively, children with unexplained hearing loss must be screened for congenital hypothyroidism.

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Giant Facial Nerve Schwannoma with Extra-Temporal Involvement: A Series Of Two Cases

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Abstract

Facial nerve schwannoma is a rare benign tumor of temporal bone arising from the schwann cells with incidence of 0.8%. They can arise from any segment of facial nerve with geniculate ganglion being the most common and labyrinthine segment the second commonest site. Intra-temporal location is common while only 9% of the cases have extra-temporal or parotid gland involvement. Bony remodeling or scalloping of the facial canal and the surrounding bone is the classic radiological feature of schwannoma. However schwannomas of temporal bone location can show bony erosions. The management option depends on site, extent, facial nerve function and hearing status. Surgery is reserved for large tumors with poor facial functions, hearing loss and giddiness. Giant facial nerve schwannoma with extra-temporal involvement is a rare entity with only handful number of cases reported in the literature. We present a series of two cases of giant facial nerve schwannoma with parotid gl and involvement.

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Relation Between Posterior Canal Benign Paroxysmal Positional Vertigo and Vitamin D Deficiency

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Abstract

The aim of this study is to establish a relationship between vitamin D levels and benign paroxysmal positional vertigo (BPPV) and its recurrence; and to evaluate the remedial effect of vitamin D on BPPV. In a pilot study, 40 patients with clinically diagnosed posterior canal BPPV were evaluated, treated and were followed up for a period of 6 months at ENT Department of Mahatma Gandhi Medical College, Jaipur. All the patients with clinical diagnosis of posterior canal BPPV were tested for 25(OH)D levels at their 1st visit. Patients were divided in two groups after appropriate matching. Group A was given vitamin D supplementation along with canal repositioning manoeuvre (CRM) and group B were only treated by canal repositioning manoeuvre. Patients underwent neuro-otological assessment during follow up visits and recurrent attacks were recorded. This study was conducted on 40 patients with BPPV (26 females and 14 males). The average age was 50 years. Avera ge serum of 25(OH)D at the first visit was (12.2 ng/ml) for group A, and (12.4 ng/ml) for group B, all patients had low serum level of 25(OH)D (below 20 ng/ml). Recurrent BPPV episodes, were significantly lower in group A than that of group B. We second the hypothesis that the patients with BPPV who have insufficient levels of Vitamin D may benefit from vitamin D supplementation and we suggest further epidemiological and pharmacological studies to detect the effect of vitamin D deficiency on development and recurrence of vertigo.

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Robotic system for top to bottom MRgFUS therapy of multiple cancer types

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ABSTRACT

Background

A robotic system for Magnetic Resonance guided Focused Ultrasound (MRgFUS) therapy of tumours in the breast, bone, thyroid, and abdomen was developed.

Methods

A special C-shaped structure was designed to be attached to the table of conventional MR imaging (MRI) systems carrying 4 computer-controlled motion stages dedicated to positioning a 2.75 MHz spherically focused transducer relative to a patient placed in the supine position. The developed system was evaluated for its MRI compatibility and heating abilities in agar-based phantoms and freshly excised tissue.

Results

Compatibility of the system with a clinical high-field MRI scanner was demonstrated. FUS heating in the phantom was successfully monitored by MR thermometry without any evidence of magnetically-induced phenomena. Cigar-shaped discrete lesions and well-defined areas of overlapping lesions were inflicted in excised tissue by robotic movement along grid patterns.

Conclusions

The developed MRgFUS robotic system was proven safe and efficient by ex-vivo feasibility studies.

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Measuring functional outcome in upper extremity soft-tissue sarcoma: Validation of the Toronto extremity salvage score and the QuickDASH patient-reported outcome instruments

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J Plast Reconstr Aesthet Surg. 2021 Dec 1:S1748-6815(21)00625-2. doi: 10.1016/j.bjps.2021.11.081. Online ahead of print.

ABSTRACT

Interest in functional outcome (FO) and health-related quality of life (HRQL) in extremity soft-tissue sarcoma (STS) patients has increased. The aim of this study was to validate two FO questionnaires for upper extremity STS patients: the Toronto Extremity Salvage Score (TESS) and short version of the Disability of Arm, Shoulder and Hand (QuickDASH), based on Finnish population data. A multi-center study was conducted at two academic sarcoma centers. Surgically treated upper extremity STS patients were invited to participate. Patients completed the TESS and the QuickDASH with HRQL questionnaires the 15D and the QLQ-C30. The scores were analyzed and compared. Fifty-five patients with a mean follow-up period of 4.7 years were included. Mean age was 63 years (standard deviation [SD] 14.6). The mean score for TE SS was 88.5 (SD 15.1) and for QuickDASH 17.8 (SD 19.6). The QuickDASH had a statistically significantly better score coverage. A ceiling effect was noted, 27% and 20% for TESS and QuickDASH, respectively. The TESS and QuickDASH scores were strongly correlated (r= -0.89). The TESS score strongly correlated with the QLQ-C30 (r = 0.79) and the 15D score (r = 0.70). The QuickDASH score correlated strongly with the QLQ-C30 score (r=-0.71) and moderately with the 15D score (r= -0.56). The TESS score had a statistically significantly stronger correlation with the 15D score than QuickDASH (p<0.005). Both the TESS and the QuickDASH provide reliable scores for assessing FO in upper extremity STS patients. The QuickDASH has a better coverage, whereas TESS showed a stronger correlation to HRQL scores.

PMID:34996722 | DOI:10.1016/j.bjps.2021.11.081

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Association between exposure to radioactive iodine after the Chernobyl accident and thyroid volume in Belarus 10-15 years later

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Environ Health. 2022 Jan 7;21(1):5. doi: 10.1186/s12940-021-00820-0.

ABSTRACT

BACKGROUND: While there is a robust literature on environmental exposure to iodine-131 (131I) in childhood and adolescence and the risk of thyroid cancer and benign nodules, little is known about its effects on thyroid volume.

METHODS: To assess the effect of 131I dose to the thyroid on the volume of the thyroid gland, we examined the data from the baseline screening of the Bel arusian-American Cohort Study of residents of Belarus who were exposed to the Chernobyl fallout at ages ≤18 years. Thyroid dose estimates were based on individual thyroid activity measurements made shortly after the accident and dosimetric data from questionnaires obtained 10-15 years later at baseline screening. During baseline screening, thyroid gland volume was assessed from thyroid ultrasound measurements. The association between radiation dose and thyroid volume was modeled using linear regression where radiation dose was expressed with power terms to address non-linearity. The model was adjusted for attained age, sex, and place of residence, and their modifying effects were examined.

RESULTS: The analysis was based on 10,703 subjects. We found a statistically significant positive association between radiation dose and thyroid volume (P < 0.001). Heterogeneity of association was observed by attained age (P < 0.001) with statistically significant association remain ing only in the subgroup of ≥18 years at screening (P < 0.001). For this group, increase in dose from 0.0005 to 0.15 Gy was associated with a 1.27 ml (95% CI: 0.46, 2.07) increase in thyroid volume. The estimated effect did not change with increasing doses above 0.15 Gy.

CONCLUSIONS: This is the first study to examine the association between 131I dose to the thyroid gland and thyroid volume in a population of individuals exposed during childhood and systematically screened 10-15 years later. It provides evidence for a moderate statistically significant increase in thyroid volume among those who were ≥ 18 years at screening. Given that this effect was observed at very low doses and was restricted to a narrow dose range, further studies are necessary to better understand the effect.

PMID:34996456 | DOI:10.1186/s12940-021-00820-0

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Dual VEGF/PDGF knockdown suppresses vasculogenic mimicry formation in choroidal melanoma cells via the Wnt5a/β-catenin/AKT signaling pathway

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Via histochem

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Acta Histochem. 2022 Jan 4;124(1):151842. doi: 10.1016/j.acthis.2021.151842. Online ahead of print.

ABSTRACT

OBJECTIVE: This study aimed to explore the effects of knocking down both vascular endothelial growth factor (VEGF) and platelet derived growth factor (PDGF) on vasculogenic mimicry (VM) formation in choroidal melanoma (CM) cells.

METHODS: Cell counting Kit (CCK)-8, monoclonal formation, wound healing, transwell and flow cytometry assays were used to observe the cell effects in CM cell line, ocular choroidal melanoma-1 cells (OCM-1) with respect to proliferation, migration, invasion and apoptosis. Three-dimensional (3D) cultures were also used to characterize VM tube structural effects in OCM-1 cells and western blotting was used to characterize protein expression changes in VM-related markers.

RESULTS: Dual VEGF/PDGF knockdown suppressed cell proliferation, migration and invasion, but promoted cell apoptosis. It also reduced VM tube structures in OCM-1 cells. VM associated markers including, VE-cadherin, EphA2 and MT1-MMP were also down-regulated in OCM-1 cells. Similarly, Wnt5a, β-catenin and phosphorylated-AKT levels were also down-regulated. Western blotting and 3D cultures further demonstrated that combined Wnt5a silencing with dual VEGF/PDGF knockdown significantly decreased VE-cadherin and EphA2 levels and reduced VM tube structures in OCM-1 cells.

CONCLUSIONS: Dual VEGF/PDGF knockdown suppressed cell growth and metastas is in OCM-1 cells, and blocked the Wnt5a/β-catenin/AKT signaling pathway thereby inhibiting VM formation.

PMID:34995928 | DOI:10.1016/j.acthis.2021.151842

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