A Drosophila model of mutant human parkin-induced toxicity demonstrates selective loss of dopaminergic neurons and dependence on cellular dopamine

…, HY Chang, GM Lawless, A Ratnaparkhi… - Journal of …, 2007 - Soc Neuroscience
Mutations in human parkin have been identified in familial Parkinson's disease and in some
sporadic cases. Here, we report that expression of mutant but not wild-type human parkin in …

[HTML][HTML] A Drosophila Model of ALS: Human ALS-Associated Mutation in VAP33A Suggests a Dominant Negative Mechanism

A Ratnaparkhi, GM Lawless, FE Schweizer… - PloS one, 2008 - journals.plos.org
ALS8 is caused by a dominant mutation in an evolutionarily conserved protein, VAPB (vesicle-associated
membrane protein (VAMP)-associated membrane protein B)/ALS8). We have …

A genetic screen identifies Tor as an interactor of VAPB in a Drosophila model of amyotrophic lateral sclerosis

…, R Ueda, A Ratnaparkhi, GS Ratnaparkhi - Biology …, 2014 - journals.biologists.com
Amyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disorder characterized
by selective death of motor neurons. In 5–10% of the familial cases, the disease is …

A Presynaptic Regulatory System Acts Transsynaptically via Mon1 to Regulate Glutamate Receptor Levels in Drosophila

…, P Sonavane, GS Ratnaparkhi, A Ratnaparkhi - Genetics, 2015 - academic.oup.com
Mon1 is an evolutionarily conserved protein involved in the conversion of Rab5 positive early
endosomes to late endosomes through the recruitment of Rab7. We have identified a role …

[HTML][HTML] Neural pathways in nutrient sensing and insulin signaling

A Ratnaparkhi, J Sudhakaran - Frontiers in Physiology, 2022 - frontiersin.org
Nutrient sensing and metabolic homeostasis play an important role in the proper growth
and development of an organism, and also in the energy intensive process of reproduction. …

Altered Levels of Gq Activity Modulate Axonal Pathfinding inDrosophila

A Ratnaparkhi, S Banerjee, G Hasan - Journal of Neuroscience, 2002 - Soc Neuroscience
A majority of neurons that form the ventral nerve cord send out long axons that cross the
midline through anterior or posterior commissures. A smaller fraction extend longitudinally and …

Drosophila Mon1 constitutes a novel node in the brain-gonad axis that is essential for female germline maturation

…, GS Ratnaparkhi, A Ratnaparkhi - …, 2019 - journals.biologists.com
Monensin-sensitive 1 (Mon1) is an endocytic regulator that participates in the conversion of
Rab5-positive early endosomes to Rab7-positive late endosomes. In Drosophila, loss of …

Rab11 rescues muscle degeneration and synaptic morphology in the park13/+ Parkinson model of Drosophila melanogaster

P Rai, A Ratnaparkhi, JK Roy - Brain Research, 2023 - Elsevier
Mutation in parkin and pink1 is associated with Parkinson’s disease (PD), the most common
movement disorder characterized by muscular dysfunction. In a previous study, we …

[HTML][HTML] The secreted cell signal Folded Gastrulation regulates glial morphogenesis and axon guidance in Drosophila

A Ratnaparkhi, K Zinn - Developmental biology, 2007 - Elsevier
During gastrulation in Drosophila, ventral cells change shape, undergoing synchronous apical
constriction, to create the ventral furrow (VF). This process is affected in mutant embryos …

Caspar, an adapter for VAPB and TER94, modulates the progression of ALS8 by regulating IMD/NFκB-mediated glial inflammation in a Drosophila model of human …

…, A Ratnaparkhi, GS Ratnaparkhi - Human Molecular …, 2022 - academic.oup.com
Amyotrophic lateral sclerosis (ALS) is a fatal, late-onset, progressive motor neurodegenerative
disorder. A key pathological feature of the disease is the presence of heavily …