Details

kind
infographic
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Across CNS regions and studies, single-astrocyte biocytin/LY/SR101 injections reveal networks of ~30–200 coupled cells; regional and method differences explain a substantial fraction of the range.
provider
other
section_id
section_07_evidence_package
source_url
https://github.com/AllenNeuralDynamics/ComputationalReviewAstrocytes/blob/1a55da0634a3bc04e5688792ed12141ce271d28e/evidence/section_07_evidence_package.json
target_ref
wiki_page:computationalreviewastrocytes-07
review_repo
ComputationalReviewAstrocytes
section_ref
wiki_page:computationalreviewastrocytes-07
source_path
evidence/section_07_evidence_package.json
section_title
Gap-Junctional Coupling and Astrocyte Networks
generation_status
complete
review_bundle_ref
analysis_bundle:ab-029ee9411fe2
origin_url
https://github.com/AllenNeuralDynamics/ComputationalReviewAstrocytes/blob/1a55da0634a3bc04e5688792ed12141ce271d28e/evidence/section_07_evidence_package.json
commit_sha
1a55da0634a3bc04e5688792ed12141ce271d28e
created_by
persona-jerome-lecoq-gbo-neuroscience
repository_url
https://github.com/AllenNeuralDynamics/ComputationalReviewAstrocytes
Raw fields (3)
raw_fields
{
  "papers": [
    {
      "n": 11,
      "doi": "10.1016/j.isci.2024.111043",
      "value": "30",
      "method": "intracellular dye injection (biocytin/LY/SR101) + imaging",
      "metric": "Coupled-cell count (dye-coupled cells per injection)",
      "n_analyzed": "",
      "ci_or_error": "",
      "text_access": "fulltext",
      "n_definition": "injected astrocytes",
      "scope_region": "barrel",
      "study_system": "acute CNS slice, astrocyte syncytium",
      "taxonomic_level": "per-injection cell count",
      "scope_population": "astrocytes (plus some OLs in panglial papers)",
      "value_source_sentence": "In comparison to panglial coupling in barreloids of C57BL6/J mice the number of coupled cells in Cx30 knockout mice under control conditions was reduced, because Cx30 is the main astrocytic connexin in the thalamus and dominate number of cell contacts by gap junctions to neighboring astrocytes and oligodendrocytes.",
      "experimental_conditions": "region=barrel"
    },
    {
      "n": 10,
      "doi": "10.1083/jcb.149.7.1513",
      "value": "11",
      "method": "intracellular dye injection + imaging",
      "metric": "Coupled-cell count per injected astrocyte (mean ± SEM)",
      "n_analyzed": "",
      "ci_or_error": "",
      "text_access": "fulltext",
      "n_definition": "injected astrocytes",
      "scope_region": "unspecified",
      "study_system": "acute CNS slice, astrocyte syncytium",
      "taxonomic_level": "per-injection cell count",
      "scope_population": "astrocytes",
      "value_source_sentence": "In these experiments, the number of coupled cells was increased from 11 ± 2 ( n = 36) in astrocytes cultures to 26 ± 4 ( n = 30) in N/A cocultures.",
      "experimental_conditions": "region=unspecified"
    },
    {
      "n": 6,
      "doi": "10.3389/fncel.2018.00431",
      "value": "100",
      "method": "intracellular dye injection + imaging",
      "metric": "Coupled-cell count per injected astrocyte (mean ± SEM)",
      "n_analyzed": "",
      "ci_or_error": "",
      "text_access": "fulltext",
      "n_definition": "injected astrocytes",
      "scope_region": "unspecified",
      "study_system": "acute CNS slice, astrocyte syncytium",
      "taxonomic_level": "per-injection cell count",
      "scope_population": "astrocytes",
      "value_source_sentence": "Coupling networks that were filled for at least 30 min—when increase of network size per time interval was less eminent—consisted of 100 ± 12 cells that occupied an area of 0.067 ± 0.009 mm 2 ( n = 32/32/31; not shown).",
      "experimental_conditions": "region=unspecified"
    },
    {
      "n": 56,
      "doi": "10.3390/biom12121812",
      "value": "36.9",
      "method": "intracellular dye injection + imaging",
      "metric": "Coupled-cell count per injected astrocyte (mean ± SEM)",
      "n_analyzed": "",
      "ci_or_error": "",
      "text_access": "fulltext",
      "n_definition": "injected astrocytes",
      "scope_region": "unspecified",
      "study_system": "acute CNS slice, astrocyte syncytium",
      "taxonomic_level": "per-injection cell count",
      "scope_population": "astrocytes",
      "value_source_sentence": "Alexa 568 spread to a greater number of coupled cells (36.9 ± 4.6 cells; Vm = −80 ± 0.8 mV, N = 10) and sulforhodamine B showed much more propagation with 60.4 ± 2.9 coupled cells (Vm = −79.4 ± 1.1 mV, N = 7).",
      "experimental_conditions": "region=unspecified"
    }
  ],
  "comparison_id": "coupled_cell_counts_by_region",
  "comparison_name": "Coupled-cell counts per injected astrocyte across studies/regions",
  "comparison_type": "convergent evidence",
  "what_it_reveals": "Across CNS regions and studies, single-astrocyte biocytin/LY/SR101 injections reveal networks of ~30–200 coupled cells; regional and method differences explain a substantial fraction of the range.",
  "homogeneity_check": {
    "caveats": [
      "Different dyes (biocytin, LY, Alexa488, SR-B) differ in molecular weight and gap-junction permeability.",
      "Some entries are astrocyte-only networks; others include oligodendrocytes (panglial).",
      "Culture vs acute slice differences confound comparison (10.1083/jcb.149.7.1513 is in culture)."
    ],
    "n_definition_uniform": "true",
    "scope_region_uniform": "false",
    "taxonomic_level_uniform": "true",
    "scope_population_uniform": "false"
  },
  "suggested_plot_type": "grouped bar"
}
source_refs
[
  "paper:paper-0f6f851a1966",
  "paper:paper-29515899cf63",
  "paper:paper-dfd928fac4a2",
  "paper:paper-f9ce5c1173cc"
]
source_policy
{
  "mode": "public_source_pointer_with_short_context",
  "notes": [
    "Local review repositories are read-only inputs.",
    "SciDEX stores paper metadata, structured evidence, file pointers, and short citation contexts; it does not copy full review prose."
  ],
  "source_commit_sha": "1a55da0634a3bc04e5688792ed12141ce271d28e",
  "source_repository_url": "https://github.com/AllenNeuralDynamics/ComputationalReviewAstrocytes"
}

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