{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nA review of the 25 abstracts (PMIDs 19561302, 19475416, 19474308, 21516098, 22500639, 20100788, 18729231, 20837642, 27619419, 28858616, 22314846, 23613533, 24928056, 24863931, 26558388, 25500808, 27940219, 24318978, 30006552, 31482844, 28784854, 31320449, 28536821, 30843875, and 36744918) reveals that these studies focus almost exclusively on calcium‐activated chloride channels—most notably TMEM16B (also known as Anoctamin2)—and their critical roles in sensory signal transduction (e.g., in olfaction, vision) and neuronal excitability, as well as on related channel properties, regulatory mechanisms, and behavioral outcomes. These works demonstrate that TMEM16B contributes to key amplification steps in olfactory receptor neurons, modulates action potential firing in various brain regions, and is involved in other specialized cellular functions ranging from synaptic regulation to ionic plasticity."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "25"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn contrast, the single abstract (PMID 19240080) that does not address chloride channel function characterizes the gene TSG23/Tsg23. This study reports that TSG23 is predominantly expressed in human and murine testicular germ cells—specifically spermatocytes and round spermatids—and that its diminished expression correlates with azoospermia, suggesting a possible role in normal spermatogenesis."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "26"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nNotably, none of the 26 abstracts provide any information on the function of SPATA25. Although one might associate SPATA genes with roles in spermatogenesis, the provided literature covers Ca2⁺‐activated chloride channels and a testis-expressed gene (TSG23) without any mention of SPATA25. Therefore, based on these abstracts, the physiological and functional implications of SPATA25 remain undetermined, highlighting an area that awaits further investigation.\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Aaron B Stephan, Eleen Y Shum, Sarah Hirsh, et al. "}, {"type": "b", "children": [{"type": "t", "text": "ANO2 is the cilial calcium-activated chloride channel that may mediate olfactory amplification."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Proc Natl Acad Sci U S A (2009)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1073/pnas.0903304106"}], "href": "https://doi.org/10.1073/pnas.0903304106"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19561302"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19561302"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Simone Pifferi, Michele Dibattista, Anna Menini "}, {"type": "b", "children": [{"type": "t", "text": "TMEM16B induces chloride currents activated by calcium in mammalian cells."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Pflugers Arch (2009)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1007/s00424-009-0684-9"}], "href": "https://doi.org/10.1007/s00424-009-0684-9"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19475416"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19475416"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Heidi Stöhr, Julia B Heisig, Peter M Benz, et al. "}, {"type": "b", "children": [{"type": "t", "text": "TMEM16B, a novel protein with calcium-dependent chloride channel activity, associates with a presynaptic protein complex in photoreceptor terminals."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Neurosci (2009)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1523/JNEUROSCI.5546-08.2009"}], "href": "https://doi.org/10.1523/JNEUROSCI.5546-08.2009"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19474308"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19474308"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Gwendolyn M Billig, Balázs Pál, Pawel Fidzinski, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Ca2+-activated Cl− currents are dispensable for olfaction."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Nat Neurosci (2011)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1038/nn.2821"}], "href": "https://doi.org/10.1038/nn.2821"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "21516098"}], "href": "https://pubmed.ncbi.nlm.nih.gov/21516098"}]}, {"type": "r", "ref": 5, "children": [{"type": "t", "text": "Wendy C Huang, Shaohua Xiao, Fen Huang, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "Tmem16b is specifically expressed in the cilia of olfactory sensory neurons."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Chem Senses (2010)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1093/chemse/bjq007"}], "href": "https://doi.org/10.1093/chemse/bjq007"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "20100788"}], "href": "https://pubmed.ncbi.nlm.nih.gov/20100788"}]}, {"type": "r", "ref": 7, "children": [{"type": "t", "text": "Jason R Rock, Brian D Harfe "}, {"type": "b", "children": [{"type": "t", "text": "Expression of TMEM16 paralogs during murine embryogenesis."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Dev Dyn (2008)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1002/dvdy.21676"}], "href": "https://doi.org/10.1002/dvdy.21676"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "18729231"}], "href": "https://pubmed.ncbi.nlm.nih.gov/18729231"}]}, {"type": "r", "ref": 8, "children": [{"type": "t", "text": "Claudia Sagheddu, Anna Boccaccio, Michele Dibattista, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "Anoctamin2 (TMEM16B) forms the Ca"}, {"type": "a", "children": [{"type": "t", "text": "sup"}], "href": "sup"}, {"type": "t", "text": "2+"}, {"type": "a", "children": [{"type": "t", "text": "/sup"}], "href": "/sup"}, {"type": "t", "text": "-activated Cl"}, {"type": "a", "children": [{"type": "t", "text": "sup"}], "href": "sup"}, {"type": "t", "text": "-"}, {"type": "a", "children": [{"type": "t", "text": "/sup"}], "href": "/sup"}, {"type": "t", "text": " channel in the retinal pigment epithelium."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Exp Eye Res (2017)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.exer.2016.12.003"}], "href": "https://doi.org/10.1016/j.exer.2016.12.003"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "27940219"}], "href": "https://pubmed.ncbi.nlm.nih.gov/27940219"}]}, {"type": "r", "ref": 18, "children": [{"type": "t", "text": "Devendra Kumar Maurya, Anna Menini "}, {"type": "b", "children": [{"type": "t", "text": "Developmental expression of the calcium-activated chloride channels TMEM16A and TMEM16B in the mouse olfactory epithelium."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Dev Neurobiol (2014)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1002/dneu.22159"}], "href": "https://doi.org/10.1002/dneu.22159"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "24318978"}], "href": "https://pubmed.ncbi.nlm.nih.gov/24318978"}]}, {"type": "r", "ref": 19, "children": [{"type": "t", "text": "Joseph D Zak, Julien Grimaud, Rong-Chang Li, et al. 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