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Article ; Online: The Sky is Pink.

Nayak, Neeta

2023 Volume 26, Issue 12, Page(s) 1759–1760

Language	English
Publishing date	2023-12-07
Publishing country	United States
Document type	Journal Article ; Review
ZDB-ID	1427361-5
ISSN	1557-7740 ; 1096-6218
ISSN (online)	1557-7740
ISSN	1096-6218
DOI	10.1089/jpm.2023.0454
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Article ; Online: Environmental enrichment preserves hippocampal neurons in diabetes and stressed rats.

Pamidi, N / Yap, C G / Nayak, N

Histology and histopathology

2022 Volume 37, Issue 4, Page(s) 385–395

Abstract: This study evaluated the effect of Environmental Enrichment (EE) on neuron morphology in the CA1, CA3 and dentate hilus (DH) regions of the hippocampus by quantitating the total dendritic arborizations. EE is a potential intervention for stress and ... ...

Abstract	This study evaluated the effect of Environmental Enrichment (EE) on neuron morphology in the CA1, CA3 and dentate hilus (DH) regions of the hippocampus by quantitating the total dendritic arborizations. EE is a potential intervention for stress and diabetes. It is capable of mitigating diabetes and stress-induced cognitive and memory deficit. Diabetes and stress were induced in male Wistar rats (4-5 weeks). Diabetic and stressed rats were exposed to EE on Day 2 post STZ injection and subsequently once daily for 30 days. All animals were sacrificed on Day 30. The hippocampus was dissected and processed for Golgi staining to quantitate dendritic arborizations at the CA1, CA2 and DH regions. Diabetes (D) and Diabetes+stress (D+S) groups had significantly fewer apical and basal dendritic branching points (ADBP, BDBP) at CA1 (p<0.01), CA3 (p<0.001) and DH (p<0.001) relative to control group (NC). Diabetes and stressed rats exposed to EE: [D+EE and D+S+EE groups] exhibited significantly denser ADBP and BDBP at all regions relative to D (p<0.001) and (D+S+EE) (p<0.001) groups respectively. EE significantly preserved neuronal arborizations in hippocampus of diabetic and stressed rats, suggesting a potential entity of diabetes and stress management.
MeSH term(s)	Animals ; Diabetes Mellitus ; Environment ; Hippocampus/cytology ; Male ; Neurons/cytology ; Rats ; Rats, Wistar ; Stress, Physiological
Language	English
Publishing date	2022-01-03
Publishing country	Spain
Document type	Journal Article
ZDB-ID	83911-5
ISSN	1699-5848 ; 0213-3911
ISSN (online)	1699-5848
ISSN	0213-3911
DOI	10.14670/HH-18-418
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Article ; Online: Oval and round window reinforcement surgery leads to improvements in sound tolerance and quality of life for hyperacusis patients.

Young, Allen / Holmes, Sean / Nayak, Neil / Silverstein, Herbert

American journal of otolaryngology

2024 Volume 45, Issue 3, Page(s) 104231

Abstract: Purpose: Hyperacusis is an audiological disorder in which patients become persistently sensitive and intolerant to everyday environmental sounds. For those patients that fail conservative options, a minimally invasive surgical procedure has been ... ...

Abstract	Purpose: Hyperacusis is an audiological disorder in which patients become persistently sensitive and intolerant to everyday environmental sounds. For those patients that fail conservative options, a minimally invasive surgical procedure has been developed. Materials & methods: Retrospective case series of 73 adult patients with hyperacusis who underwent oval and round window reinforcement surgery between 1/2017-6/2023. Small pieces of temporalis fascia were used to reinforce the round and oval windows. Patients were separated into two groups based on their preoperative speech Loudness Discomfort Level (LDL). Patients with a preoperative speech LDL ≤ 70 dB were placed in the "low LDL group" whereas patients with a preoperative speech LDL >70 dB were placed in the "high LDL group." Preoperative and one-week postoperative audiogram and speech LDLs were compared. Quality of life was assessed using the Glasgow Benefit Inventory (GBI) survey. Results: 73 patients met inclusion criteria - 21 patients in the low LDL group and 52 in the high LDL group. Patients in the high LDL group significantly improved their LDLs by an average of 3.5 dB (P < 0.0001). 42 patients (80.8 %) in the high LDL group had improvement and would recommend the surgery for hyperacusis. Patients in the low LDL group significantly improved their LDL by an average of 12.9 dB (P = 0.032). Ten patients (47.6 %) from the low LDL group experienced improvement and would recommend hyperacusis surgery. Conclusion: Many patients with hyperacusis who undergo oval and round window reinforcement can receive significant improvement in sound tolerance and quality of life. Patients with a pre-op speech LDL > 70 dB have the greatest potential for improvement with surgery (80.8 %), probably because their hyperacusis was less severe.
Language	English
Publishing date	2024-03-10
Publishing country	United States
Document type	Journal Article
ZDB-ID	604541-8
ISSN	1532-818X ; 0196-0709
ISSN (online)	1532-818X
ISSN	0196-0709
DOI	10.1016/j.amjoto.2024.104231
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Article ; Online: Management of Posthemorrhagic Hydrocephalus.

Nayak, Naren / Sankhla, Suresh K

Neurology India

2022 Volume 69, Issue Supplement, Page(s) S313–S319

Abstract: Background: Although there are several successful treatment options available today, the optimal management of posthemorrhagic hydrocephalus (PHH) still remains undetermined.: Objective: To evaluate the efficacy and outcomes of contemporary treatment ...

Abstract	Background: Although there are several successful treatment options available today, the optimal management of posthemorrhagic hydrocephalus (PHH) still remains undetermined. Objective: To evaluate the efficacy and outcomes of contemporary treatment methods and to define current evidence-based management for PHH in premature infants. Material and methods: Literature was reviewed to identify and analyze merits and demerits of the currently available temporizing measures and definitive treatment for premature low-birth weight babies with PHH. Results and conclusions: Advances in treatment and increased experience have led to redefinition of treatment goals to optimize cognitive neurodevelopment, and quality of life in these premature infants with PHH. Current literature favors early diagnosis and intervention using temporizing measures, and prevention of future complications of PHH with a permanent CSF diversion method such as ventricular shunting or endoscopic third ventriculostomy.
MeSH term(s)	Cerebral Hemorrhage/surgery ; Cerebrospinal Fluid Shunts ; Humans ; Hydrocephalus/etiology ; Hydrocephalus/surgery ; Infant ; Quality of Life ; Ventriculostomy
Language	English
Publishing date	2022-01-28
Publishing country	India
Document type	Journal Article ; Review
ZDB-ID	415522-1
ISSN	1998-4022 ; 0028-3886
ISSN (online)	1998-4022
ISSN	0028-3886
DOI	10.4103/0028-3886.332257
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Article: Drosophila melanogaster

Nayak, Nibedita / Mishra, Monalisa

Journal of integrative neuroscience

2022 Volume 21, Issue 2, Page(s) 66

Abstract: The innate immune system primarily gets triggered by microbe infiltration, injury, stress, aging, and brain disorders. The hyperactivation of the innate immune system and neuroinflammatory reactions contributes to chronic age-related neurodegeneration. ... ...

Abstract	The innate immune system primarily gets triggered by microbe infiltration, injury, stress, aging, and brain disorders. The hyperactivation of the innate immune system and neuroinflammatory reactions contributes to chronic age-related neurodegeneration. The mechanism for activation of the immune pathway is conserved between
MeSH term(s)	Animals ; Disease Models, Animal ; Drosophila melanogaster ; Inflammation ; Microglia/metabolism ; Neurodegenerative Diseases/etiology ; Neurodegenerative Diseases/metabolism ; Neuroinflammatory Diseases/etiology ; Neuroinflammatory Diseases/metabolism
Language	English
Publishing date	2022-03-18
Publishing country	Singapore
Document type	Journal Article ; Review
ZDB-ID	2136427-8
ISSN	0219-6352
ISSN	0219-6352
DOI	10.31083/j.jin2102066
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Article: Next-generation sequencing technology for the diagnosis of microbial infections in hard-to-heal wounds.

Nayak, Namitha / Kapaettu, Satyamoorthy / Sreepathy, Murali Thokur

Journal of wound care

2023 Volume 32, Issue Sup6a, Page(s) xcvii–cix

Abstract: A hard-to-heal wound does not usually progress through the normal wound repair process and remains in an inflammatory state. The aetiology of a hard-to-heal wound may be varied but they are generally recurrent in patients predisposed to certain ... ...

Abstract	A hard-to-heal wound does not usually progress through the normal wound repair process and remains in an inflammatory state. The aetiology of a hard-to-heal wound may be varied but they are generally recurrent in patients predisposed to certain conditions, including diabetes. Hard-to-heal wounds associated with diabetic foot ulcers are a significant cause of morbidity and mortality. Microbial infections further delay the healing process, contributing to its chronicity and influence the pathogenicity of infection-causing bacteria. Traditionally, culture-based methods have been employed to study microbial communities within the hard-to-heal wound. This method underestimates or excludes most of the dominant species and is oversensitive towards others. These limitations in the culture-based methods can be overcome by advanced molecular technologies, such as next-generation sequencing (NGS), which has significantly broadened our view of the wound-associated microbiome. Sequencing of genes coding for small subunit ribosomal RNA and internal transcribed spacer locus for identification of bacteria and fungi, respectively, has provided more quantitative data in a faster, more cost-effective manner and has resulted in better microbial characterisation of wounds. In this review, we have examined in detail the NGS-based molecular characterisation of wound-associated microbes and its impact on modalities for effective treatment of hard-to-heal wound ulcers. The aim of the review was to highlight the advantages and disadvantages associated with traditional and advanced molecular technologies, such as NGS, to study the wound-associated microbiome. A full understanding of the complete diversity of the wound microbiome will help in devising effective treatment regimens for hard-to-heal wounds.
MeSH term(s)	Humans ; High-Throughput Nucleotide Sequencing ; Technology ; Diabetic Foot/diagnosis ; Microbiota/genetics ; Wound Healing
Language	English
Publishing date	2023-06-12
Publishing country	England
Document type	Review ; Journal Article
ZDB-ID	1353951-6
ISSN	0969-0700
ISSN	0969-0700
DOI	10.12968/jowc.2023.32.Sup6a.xcvii
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Article ; Online: High fat diet induced abnormalities in metabolism, growth, behavior, and circadian clock in Drosophila melanogaster.

Nayak, Nibedita / Mishra, Monalisa

Life sciences

2021 Volume 281, Page(s) 119758

Abstract: Aims: The current lifestyle trend has made people vulnerable to diabetes and related diseases. Years of scientific research have not been able to yield a cure to the disease completely. The current study aims to investigate a link between high-fat diet ... ...

Abstract	Aims: The current lifestyle trend has made people vulnerable to diabetes and related diseases. Years of scientific research have not been able to yield a cure to the disease completely. The current study aims to investigate a link between high-fat diet mediated diabesity and circadian rhythm in the Drosophila model and inferences that might help in establishing a cure to the dreaded disease. Main methods: Several experimental methods including phenotypical, histological, biochemical, molecular, and behavioral assays were used in the study to detect obesity, diabetes, and changes in the circadian clock in the fly model. Key findings: The larva and adults of Drosophila melanogaster exposed to high-fat diet (HFD) displayed excess deposition of fat as lipid droplets and micronuclei formation in the gut, fat body, and crop. Larva and adults of HFD showed behavioral defects. The higher amount of triglyceride, glucose, trehalose in the whole body of larva and adult fly confirmed obesity-induced hyperglycemia. The overexpression of insulin gene (Dilp2) and tribble (trbl) gene expression confirmed insulin resistance in HFD adults. We also observed elevated ROS level, developmental delay, altered metal level, growth defects, locomotory rhythms, sleep fragmentation, and expression of circadian genes (per, tim, and clock) in HFD larva and adults. Thus, HFD impairs the metabolism to produce obesity, insulin resistance, disruption of clock, and circadian clock related co-mordities in D. melanogaster. Significance: The circadian gene expression provides an innovative perspective to understand and find a new treatment for type-II diabetes and circadian anomalies.
MeSH term(s)	Adipose Tissue/metabolism ; Animals ; Behavior, Animal ; Circadian Clocks/genetics ; Diet, High-Fat ; Drosophila melanogaster/growth & development ; Drosophila melanogaster/metabolism ; Drosophila melanogaster/physiology ; Female ; Glucose/metabolism ; Hyperglycemia/metabolism ; Insulin Resistance ; Larva/metabolism ; Male ; Metals/metabolism ; Obesity/ethnology ; Oxidative Stress ; Tissue Distribution ; Trehalose/metabolism
Chemical Substances	Metals ; Trehalose (B8WCK70T7I) ; Glucose (IY9XDZ35W2)
Language	English
Publishing date	2021-06-25
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	3378-9
ISSN	1879-0631 ; 0024-3205
ISSN (online)	1879-0631
ISSN	0024-3205
DOI	10.1016/j.lfs.2021.119758
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Article: Burden of Fungal Infections in Nepal.

Nayak, Niranjan

Nepal journal of epidemiology

2016 Volume 6, Issue 2, Page(s) 584–585

Language	English
Publishing date	2016-06-30
Publishing country	Nepal
Document type	Editorial
ZDB-ID	2589539-4
ISSN	2091-0800
ISSN	2091-0800
DOI	10.3126/nje.v6i2.15167
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Article: Scrub Typhus in Nepal.

Nayak, Niranjan

Nepal journal of epidemiology

2016 Volume 6, Issue 2, Page(s) 563–564

Language	English
Publishing date	2016-06-30
Publishing country	Nepal
Document type	Editorial
ZDB-ID	2589539-4
ISSN	2091-0800
ISSN	2091-0800
DOI	10.3126/nje.v6i2.15162
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Article: High fat diet induced abnormalities in metabolism, growth, behavior, and circadian clock in Drosophila melanogaster

Nayak, Nibedita / Mishra, Monalisa

Life sciences. 2021 Sept. 15, v. 281

2021

Abstract: The current lifestyle trend has made people vulnerable to diabetes and related diseases. Years of scientific research have not been able to yield a cure to the disease completely. The current study aims to investigate a link between high-fat diet ... ...

Abstract	The current lifestyle trend has made people vulnerable to diabetes and related diseases. Years of scientific research have not been able to yield a cure to the disease completely. The current study aims to investigate a link between high-fat diet mediated diabesity and circadian rhythm in the Drosophila model and inferences that might help in establishing a cure to the dreaded disease.Several experimental methods including phenotypical, histological, biochemical, molecular, and behavioral assays were used in the study to detect obesity, diabetes, and changes in the circadian clock in the fly model.The larva and adults of Drosophila melanogaster exposed to high-fat diet (HFD) displayed excess deposition of fat as lipid droplets and micronuclei formation in the gut, fat body, and crop. Larva and adults of HFD showed behavioral defects. The higher amount of triglyceride, glucose, trehalose in the whole body of larva and adult fly confirmed obesity-induced hyperglycemia. The overexpression of insulin gene (Dilp2) and tribble (trbl) gene expression confirmed insulin resistance in HFD adults. We also observed elevated ROS level, developmental delay, altered metal level, growth defects, locomotory rhythms, sleep fragmentation, and expression of circadian genes (per, tim, and clock) in HFD larva and adults. Thus, HFD impairs the metabolism to produce obesity, insulin resistance, disruption of clock, and circadian clock related co-mordities in D. melanogaster.The circadian gene expression provides an innovative perspective to understand and find a new treatment for type-II diabetes and circadian anomalies.
Keywords	Drosophila melanogaster ; circadian clocks ; circadian rhythm ; digestive system ; fat body ; genes ; glucose ; high fat diet ; histology ; hyperglycemia ; insulin ; insulin resistance ; lifestyle ; metabolism ; models ; obesity ; sleep ; trehalose ; triacylglycerols
Language	English
Dates of publication	2021-0915
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	3378-9
ISSN	1879-0631 ; 0024-3205
ISSN (online)	1879-0631
ISSN	0024-3205
DOI	10.1016/j.lfs.2021.119758
Database	NAL-Catalogue (AGRICOLA)

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