Interlaminar and varicose-projection astrocytes: toward a new understanding of the primate brain

May combine two claims.

ILAs are a subpopulation of GFAP+ astrocytes with the cell body in layer I and long inter-laminar processes perpendicular to the pia, recapitulating the columnar organization of neurons.

“ILAs are a particular subpopulation of astrocytes positive to the marker GFAP+ with the cell body in layer I, and long inter-laminar processes perpendicular to the pia, recapitulating the columnar organization of neurons”

• cites Verkhratsky and Butt, 2023 sourcePartly supported

  The section “Astroglia are primary homoeostatic cells of the CNS” (page unavailable) identifies interlaminar astrocytes as a type of astroglia. It does not describe them as GFAP-positive or specify their cell-body location, process orientation, or resemblance to neuronal columns; searches for “interlaminar,” “perpendicular to the pia,” and “columnar organization of neurons” did not establish those details. (LLM, conf=0.84)

  Experimental — accuracy not yet measured

May combine two claims.

Evidence supports a glial columnar organization, challenging the traditional perception of astrocytes as part of a horizontal cytoarchitecture forming a panglial syncytium.

“this new view of an active milieu in which the glia is as much fundamental as neurons is supported by evidence of a glial columnar organization, challenging the traditional perception of astrocytes as part of a horizontal cytoarchitecture forming a panglial syncytium”

• cites Colombo et al., 1995 sourceNot checked — no full text of the source
• cites Colombo et al., 1997cNot matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

• cites Hern’ et al., 2002 sourcePartly supported

  The Introduction and General Morphological Aspects of Interlaminar Glia describe vertical astroglial processes in primate cortex that challenge the conventional net-like panglial-syncytium model. But Possible Impact of Interlaminar Glia on Modular Function calls their role in columnar organization speculative, and the Conclusions say its functional effect remains unconfirmed. The claim overstates the evidence and omits the primate-cortex qualification; page numbers are unavailable in our copy. (LLM, conf=0.84)

  Experimental — accuracy not yet measured

May combine two claims.

ILAs are characterized by one or more long processes that may enter the deeper cortex, take a diagonal or tangential direction, remain in the superficial laminae, or not exit their cortical layer.

“ILAs are characterized by one or more long processes that may enter the deeper cortex, take a diagonal or tangential direction, remain in the superficial laminae, or even not exit their cortical layer”

• cites Colombo, 1996 sourceNot checked — no full text of the source
• cites Falcone et al., 2019 sourcePartly supported

  The Results sections report interlaminar processes that descend into deeper layers, sometimes at an oblique angle, and rudimentary ILA whose processes do not leave layer I (page not provided). However, the layer-I-confined processes of rudimentary ILA are described as short, not long. The authors also say they did not observe the superficial tangential fiber system described in earlier work, so the tangential-direction part is not supported by their observations. (LLM, conf=0.84)

  Experimental — accuracy not yet measured
• cites Oberheim et al., 2006 sourceNot checked — no full text of the source

May combine two claims.

ILAs interact with blood vessels, perivascular astrocytes, neurons, and protoplasmic astrocytes.

“These astrocytes interact with blood vessels, perivascular astrocytes, neurons, and protoplasmic astrocytes”

• cites Sosunov et al., 2014 sourcePartly supported

  The section on the adult human neocortex reports interlaminar astrocyte processes ending on blood vessels, and the discussion reports coupling between pial-based long-process astrocytes and neighboring protoplasmic astrocytes. Figure 2 shows a long process touching another astrocyte’s process near a vessel. It depicts a different long-process astrocyte in a perineuronal position, but does not establish that interlaminar astrocytes interact with neurons. Page numbers are unavailable in our copy. (LLM, conf=0.84)

  Experimental — accuracy not yet measured

May combine two claims.

In old-world monkeys, and in particular humans, ILAs are more numerous, with longer and greater overall complexity compared to new-world monkeys.

“In the old-world monkeys (and in particular in humans), ILAs are more numerous, with longer and greater overall complexity compared to the new-world monkeys”

• cites Falcone et al., 2019 sourceSupported

Probably not a substantial claim: may not pass S1 (asserted).

The RCL1 expression pattern leads to the hypothesis of an active role of ILAs in depression.

“In postmortem brains, RCL1 is expressed specifically in the nuclear region of neurons and in the long processes of ILAs (and in no other protoplasmic astrocytes), leading to the hypothesis of an active role of ILAs in depression.”

• cites Amin et al., 2018 sourceSupported

May combine two claims.

In prion diseases, ILAs show disorganized palisades and varicosities along their processes and terminal buttons, with features similar to those observed in Alzheimer's disease brains.

“In particular, ILAs show disorganized palisades and varicosities along their processes and terminal buttons, with features similar to those observed in AD brains (Garcés et al., 2021).”

• cites Garcés et al., 2021 sourcePartly supported

  The Results (§2.3.1) describe disorganized or fragmented interlaminar astroglial processes and increased terminal masses in CJD; the Discussion (§3) says these changes agree with those described in Alzheimer’s disease. However, the paper describes varicose fibers in cerebellar astroglia, not varicosities along interlaminar astroglial processes or terminal buttons. (LLM, conf=0.88)

  Experimental — accuracy not yet measured

May combine two claims.

Mouse rudimentary ILAs only partially overlap the expression of the set of markers of typical ILAs and do not increase in morphological complexity during life as typical ILAs do.

“mouse rudimentary ILAs only partially overlap the expression of the set of markers of typical ILAs and do not increase in morphological complexity during life as typical ILA do”

• cites Falcone et al., 2019 sourcePartly supported

  The Results section ('All therian mammals investigated present typical, or rudimentary, ILA'; page unavailable) identifies rodents as having rudimentary pial ILAs with fewer, shorter, less complex processes. But the paper's marker-expression tests concern rhesus monkeys, not a mouse-versus-typical-ILA comparison. Its discussion of increasing complexity concerns evolution across species, not changes during an animal's life; it does not establish the claimed lack of lifelong increase in mice. (LLM, conf=0.85)

  Experimental — accuracy not yet measured

May combine two claims.

Humans and non-human primates have the highest density and complexity index of ILAs, while marsupials show the lowest density and complexity.

“Humans and non-human primates have the highest density, and complexity index], as opposed to marsupials, which show the lowest density and complexity of ILAs”

• cites Falcone et al., 2019 sourceSupported

May combine two claims.

Early ILAs can locally proliferate until the late second trimester and increase in complexity during the postnatal period.

“These early ILAs can locally proliferate (as indicated by positivity for Ki67, a mitotic marker) until the late second trimester and increase in complexity during the postnatal period”

• cites Falcone et al., 2021 sourcePartly supported

  The ‘ILAs proliferate locally at the final destination’ section reports Ki67-positive ILAs prenatally, and the postnatal-development section reports increasing morphological complexity. But the paper also reports Ki67-positive ILAs at GD109 and GD123, both identified as third-trimester ages, so ‘until the late second trimester’ does not accurately describe the reported timing. (LLM, conf=0.88)

  Experimental — accuracy not yet measured

May combine two claims.

Astrocytes are the first cells to exhibit aggregates of the scrapie form of the prion protein, resulting in profound alterations in astrocytic morphology.

“Astrocytes are the first cells to exhibit aggregates of the scrapie form of the prion protein, resulting in profound alterations in astrocytic morphology.”

• cites Garcés et al., 2021 sourcePartly supported

  The Discussion (page unavailable) says astrocytes are the first cells to show PrPsc deposits, and the Results describe substantial changes in astrocytic morphology. But the Discussion says a link between prion protein presence and those changes *might* exist; it does not establish that the deposits cause them. (LLM, conf=0.88)

  Experimental — accuracy not yet measured

May combine two claims.

The difference in ILA density between humans and Marsupialia is two-fold, and the complexity index difference is 17-fold.

“The difference in density between humans and Marsupialia is two-fold, and the complexity index difference is 17-fold.”

• cites Falcone et al., 2019 sourcePartly supported

  The Results section reports human ILA density of 37.0/mm and Marsupialia density of 15.6 ± 4.2/mm, approximately a twofold difference. The Discussion reports a 17-fold complexity difference between the least-complex groups (marsupials and bats) and primates, not specifically between humans and Marsupialia; the Results list human complexity separately. (LLM, conf=0.88)

  Experimental — accuracy not yet measured

Probably not a substantial claim: may not pass S3 (load-bearing).

Amin et al. (2018) suggests a direct involvement of ILAs in patients with depressive symptoms.

“On the other hand, another study by Amin et al. (2018) on depression, suggests a direct involvement of ILAs in patients with depressive symptoms.”

• cites Amin et al. (2018) sourcePartly supported

  The Discussion reports abundant RCL1 labeling in interlaminar astrocytes in the human cortex and raises their possible role in depression. It does not establish their direct involvement in patients with depressive symptoms: the authors say they cannot distinguish neuronal from astrocyte contributions and call for further study. (LLM, conf=0.88)

  Experimental — accuracy not yet measured

May combine two claims.

ILAs in Marsupialia, Xenarthra, and Rodentia do not exit layer I and are called rudimentary ILAs, while in other species processes reach at least layer II and are called typical ILAs.

“ILAs in Marsupialia, Xenarthra, and Rodentia do not exit layer I (and therefore named rudimentary ILAs), while in other species, processes reach at least layer II (i.e., typical ILAs)”

• cites Falcone et al., 2019 sourcePartly supported

  The Results section defines rudimentary pial ILAs as having processes that remain in layer I and lists Marsupialia, Xenarthra, and Rodentia among species with them. But the Discussion’s “Pial ILA distribution” section also reports typical pial processes in Xenarthra and rudimentary pial ILAs in Eulipotyphla. The claim therefore overstates the division between those groups and all other species. (LLM, conf=0.88)

  Experimental — accuracy not yet measured

Probably not a substantial claim: may not pass S3 (load-bearing).

Human prion diseases are a group of progressive and fatal conditions caused by pathological aggregates of misfolded prion protein which lead to protein deposits, neuronal death, vacuolation, and gliosis.

“Among neurodegenerative disorders, human prion diseases are a group of progressive and fatal conditions caused by pathological aggregates of misfolded prion protein which lead to protein deposits, neuronal death, vacuolation, and gliosis (Garcés et al., 2021).”

• cites Garcés et al., 2021 sourcePartly supported

  The Introduction describes CJD as progressive and inevitably fatal, identifies misfolded prion-protein accumulation as the generally held cause, and lists protein deposition, vacuolation, neuronal loss, and gliosis as prominent features. The Discussion cautions that misfolded protein deposits alone do not account for neurodegeneration, so the claim overstates the evidence by presenting all the listed changes as direct consequences of the aggregates. (LLM, conf=0.86)

  Experimental — accuracy not yet measured

May combine two claims.

The ends of longer ILA processes are varicose-like, creating a club-ending that may increase membrane surface availability.

“The ends of the longer processes is also varicose-like, creating a club-ending that may increase membrane surface availability”

• cites Hern’ et al., 2002 sourceSupported
• cites Colombo et al., 1997aNot matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

• cites Reisin and Colombo, 2002 sourceNot checked — no full text of the source

May combine two claims.

Pial-based GFAP+/CD44+ astrocytes are present at 26 weeks of gestation and in young brains of 2-year-old children.

“Sosunov et al. (2014), found pial-based, GFAP+/CD44+ astrocytes at 26 weeks of gestation and confirmed their presence also in young brains of 2-year-old children”

• cites Sosunov et al., 2014 sourcePartly supported

  The developmental-results section (page unavailable) reports focal CD44 staining of pial-based astrocytes by 26 weeks of gestation and examination of brains from children aged 2–7 years. The paper describes long-process CD44+ astrocytes across ages as generally GFAP-positive, but these passages do not establish GFAP/CD44 co-positivity specifically in the 26-week specimen or document pial-based co-positive cells specifically in a 2-year-old. (LLM, conf=0.82)

  Experimental — accuracy not yet measured

May combine two claims.

Like ILAs, VP-As do not respect the single astrocytic domain rule of neighboring astrocytes and extend processes toward long distances, without crossing layer boundaries.

“Similarly to ILAs, VP-As do not respect the single astrocytic domain rule of neighboring astrocytes and extend processes toward long distances, however without crossing the layer boundaries (Oberheim et al., 2009; Pereira and Furlan, 2010).”

• cites Oberheim et al., 2009 sourcePartly supported

  The Results section on varicose projection astrocytes reports processes up to a millimeter long that frequently penetrate neighboring astrocytic domains. The Discussion says these fibers typically extend within the deep cortical layers, but does not establish that they never cross layer boundaries; it hypothesizes long-distance communication across cortical layers. (LLM, conf=0.87)

  Experimental — accuracy not yet measured
• cites Pereira and Furlan, 2010 sourceNot checked — no full text of the source

May combine two claims.

VP-As are a distinct class of astrocytes positive for GFAP, with soma localized in deep layers V and VI and white matter.

“VP-As are a distinct class of astrocytes positive for GFAP, with their soma localized in the deep layers V and VI, and white matter.”

• cites Oberheim et al., 2009 sourcePartly supported

  The Results section identifies varicose projection astrocytes as a distinct GFAP-positive class residing in cortical layers 5–6. It identifies fibrous astrocytes, not varicose projection astrocytes, as populating white matter; it does not support the claim that varicose projection astrocyte somata are located there. Page numbers are unavailable in our copy. (LLM, conf=0.90)

  Experimental — accuracy not yet measured

May combine two claims.

Engraftment of human-specific ILAs in the first layer of the mouse cortex allows the study of cells that retain intrinsic properties of human ILAs (such as process length and tortuosity, the presence of club-ending and typical interlaminar markers) and integrate into the host environment, contacting synapses, capillaries, and the pia.

“Engraftment of human-specific ILAs in the first layer of the mouse cortex (Padmashri et al., 2021), also known as the creation of chimeric mice. This innovative technique allows the study of cells that retain the intrinsic properties of human ILAs (such as process length and tortuosity, the presence of club-ending and typical interlaminar markers) and integrate into the host environment, contact”

• cites Padmashri et al., 2021 sourcePartly supported

  Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

  Experimental — accuracy not yet measured

May combine two claims.

Astrocytes are the primary targets of mercury, contributing to a toxic condition that exacerbates the development of neurodegenerative disorders.

“In either case, astrocytes are the primary targets of this heavy metal, contributing to a toxic condition that exacerbates the development of severely impacting neurodegenerative disorders (Pamphlett and Kum Jew, 2018).”

• cites Pamphlett and Kum Jew, 2018 sourcePartly supported

  The Discussion says astrocytes selectively accumulate circulating mercury and describes them as an early site of mercury localization. But the paper presents their contribution to neurodegenerative disease as a possibility, not an established exacerbating effect; the Introduction explicitly says no convincing link between mercury and neurological disorders has been established. Page numbers are not available in the supplied copy. (LLM, conf=0.88)

  Experimental — accuracy not yet measured

May combine two claims.

In Alzheimer's and Parkinson's diseases, astrocytes increase release of AEVs containing molecules that inhibit neurotoxic effects of plaques but also induce apoptosis on neurons.

“For instance, in AD and PD, astrocytes try to balance the excessive production of amyloids, by increasing the release of AEVs containing molecules that are supposed to inhibit the neurotoxic effects of the plaques, but also induce apoptosis on neurons (Leggio et al., 2021; Marchetti et al., 2020).”

• cites Leggio et al., 2021 sourcePartly supported

  Section 1.2 (page unavailable) says that in Parkinson’s disease, glial EV cargo can have beneficial or harmful effects on neuronal survival and that aging alters astrocyte- and microglia-derived EVs. It does not say that astrocytes increase AEV release to counter amyloid plaques in Alzheimer’s or Parkinson’s disease, or that those AEVs induce neuronal apoptosis. (LLM, conf=0.83)

  Experimental — accuracy not yet measured
• cites Marchetti et al., 2020 sourcePartly supported

  Section 4.3 reports that astrocyte-derived EVs can carry molecules that protect neurons, while Section 3.2 describes astrocyte-derived EVs with potentially harmful cargo. The paper does not say that astrocytes increase AEV release to counter amyloid plaques in AD and PD, or that those protective AEVs also induce neuronal apoptosis; the apoptosis example in Section 3.2 concerns microglial EVs. (LLM, conf=0.84)

  Experimental — accuracy not yet measured

May combine two claims.

VP-As show varicosities along their longer processes and are present in the deeper layers of the cortex and white matter.

“These astrocytes show peculiar varicosities along their longer processes and are present in the deeper layers of the cortex and white matter.”

• cites Falcone et al., 2022 sourceNot checked — no full text of the source

May combine two claims.

Subpial ILAs have oval-shaped perikarya that remain in layer I slightly further from the pia and contact the pia mater via small processes on the upper part of the soma.

“Subpial ILAs differ from the previous ones in their oval-shaped of the perikarya (which remains always in layer I of the cortex, though slightly further from the pia), and contact the pia mater via small processes on the upper part of the soma.”

May combine two claims.

Following intracranial injection of KCl (5 and 50 mM) in the striatal cortex of non-human primates, a short-term rearrangement of the long processes of ILAs was observed near the injection site, including increased GFAP immunoreactivity, enhanced Vimentin expression at the club-ending, and numerous thickenings.

“Following the intracranial injection of KCl (5 and 50 mM) in the striatal cortex leads, a short-term rearrangement of the long processes of ILAs was observed near the injection site. This included increased GFAP immunoreactivity, enhanced expression of Vimentin at the club-ending, and the presence of numerous thickenings.”

• cites Colombo et al. (1997b)Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

May combine two claims.

ILAs start to be visible between 20 and 40 days after birth; at 40 days, perpendicular long GFAP-positive processes are visible in most cortical areas, although they typically do not exit layer I.

“ILAs start to be visible between 20 and 40 days after birth; at 40 days, the perpendicular long GFAP-positive processes are visible in most cortical areas, although they typically do not exit layer I.”

• cites Colombo et al., 2005 sourceNot checked — no full text of the source
• cites Colombo et al., 1997cNot matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

May combine two claims.

The low expression of miR-34a in ILAs is probably linked to their stability, and the low expression of miR-449 is linked to their typical architecture.

“For instance, the low expression of miR-34a (which induces astrogliogenesis) is probably linked to the stability of ILA; while the low expression of miR-449 (a regulator of microtubule dynamics in cell proliferation) is linked to their typical architecture.”

• cites Rao et al. (2016) sourceNot checked — no full text of the source

Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

The columnar morphology of ILAs may indicate a role in trafficking and integrating information from superficial layers to deep layers, and in horizontal interactions via short processes that do not exit layers I and II.

“The columnar morphology of ILAs may indicate a role in trafficking and integrating information from the superficial layers to the deep ones, as well as in horizontal interactions via short processes that do not exit layers I and II (Colombo, 1996).”

• cites Colombo, 1996 sourceNot checked — no full text of the source

May combine two claims.

Electron microscopic analysis showed thick GFAP+ laminae at the borders of varicosities, electron-lucid material, and mitochondria in the center.

“Electron microscopic analysis showed the thick GFAP+ laminae at the borders of the varicosities and the electron-lucid material, as well as mitochondria in the center”

• cites Colombo et al., 1997aNot matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

May combine two claims.

Patients with Alzheimer's disease show a reduction in glial density at the blood-brain barrier and an increase in astrogliosis and astrocyte recruitment at inflammation sites.

“Patients with Alzheimer’s disease (AD) show a reduction in glial density at the blood-brain barrier (Webster et al., 2001), and an increase in astrogliosis and astrocyte recruitment at the inflammation sites (Edler et al., 2023).”

• cites Webster et al., 2001 sourceNot checked — no full text of the source
• cites Edler et al., 2023 sourceNot checked — no full text of the source

May combine two claims.

In chimpanzees, disruptions of the interlaminar palisade resemble those in human patients, associated with Aβ plaques or high levels of tau phosphorylation, often without microglia activation.

“In chimpanzees, disruptions of the interlaminar palisade resemble those in human patients, associated with Aβ plaques or high levels of tau phosphorylation, often without microglia activation.”

• cites Edler et al., 2023 sourceNot checked — no full text of the source

May combine two claims.

ILAs are present in the prefrontal, frontal, temporal, parietal, and occipital human cortex, as well as in the frontal, temporal, and occipital cortex of New- and Old-World monkeys, with variable distribution and morphology.

“ILAs have been shown to be present in the prefrontal, frontal, temporal, parietal, and occipital human cortex, as well as in the frontal, temporal, occipital cortex of New- and Old-World monkeys”

• cites Colombo et al., 1998 sourceNot checked — no full text of the source
• cites Colombo et al., 1997aNot matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

• cites Colombo et al., 2000 sourceNot checked — no full text of the source

May combine two claims.

ILAs exhibit a patch distribution in the brain, with alternating zones of density and long processes extending from layer II in the striatal cortex of Cebus apella and Saimiri boliviensis.

“ILAs exhibit a patch distribution in the brain: GFAP immunolabeling of the medial portion of the striatal cortex of Cebus apella and Saimiri boliviensis monkeys show alternating zones of density with long processes extending from layer II.”

• cites Colombo et al., 1999 sourceNot checked — no full text of the source

May combine two claims.

Pial ILAs have an inverted pyramidal soma with the base in direct contact with the pia mater; four to five processes originate from the apex, and a few others are located in the rest of the soma.

“Pial ILAs are recognizable by an inverted pyramidal morphology of the soma with the base in direct contact with the pia mater. Four to five processes originate from the apex of the pyramid, while a few others are located in the rest of the soma.”

May combine two claims.

In Alzheimer's disease, ILAs lose their palisade structure, although they do not directly co-localize typical neuritic plaques.

“ILAs lose their palisade structure, although they do not directly co-localize typical neuritic plaques (Colombo et al., 2002; Edler et al., 2023).”

• cites Colombo et al., 2002 sourceNot checked — no full text of the source
• cites Edler et al., 2023 sourceNot checked — no full text of the source

May combine two claims.

ILAs show an abundance of anti-inflammatory miRNA (such as miR-146, with limited expression of pro-inflammatory miR-338 and miR-365) and modulators of GFAP expression (such as miR-125b), supporting the hypothesis of ILAs as a "first-line defense" against external insults.

“On the contrary, there was an abundance of anti-inflammatory miRNA (as miR-146, which coincides with the limited expression of pro-inflammatory miR-338 and miR-365) and modulators of GFAP expression (as miR-125b), supporting the hypothesis of ILA as a “first-line defense” against external insults (Rao et al., 2016).”

• cites Rao et al., 2016 sourceNot checked — no full text of the source

May combine two claims.

In primates, the long radial ILA process is 250-500 μm in non-human primates and up to 1,000 μm in humans; it exits layer I and may stop at the next layer or cross almost all the cortex, reaching lamina IV and occasionally lamina V.

“In primates, the long radial process (250–500 μm in non-human primates, up to 1,000 μm in humans) exits layer I and may stop at the next layer (e.g., in Microcebus murinus) or cross almost all the cortex, reaching lamina IV and occasionally lamina V (as in humans).”

• cites Colombo et al., 1998, 2000Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

• cites Colombo et al., 1997aNot matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

May combine two claims.

The purinergic receptor P2Y12 is localized to myelin and ILAs but not protoplasmic astrocytes, suggesting a role in long-distance signaling within the different cortical layers.

“Amadio et al. (2010) localized the purinergic receptor P2Y12 to myelin and ILAs but not protoplasmic astrocytes, suggesting a role in long-distance signaling within the different cortical layers.”

• cites Amadio et al. (2010) sourceNot checked — no full text of the source

May combine two claims.

ILAs are involved in the glymphatic system and the regulation of water homeostasis at the blood-brain barrier and at the pia interface.

“This strongly suggests that ILAs are involved in the glymphatic system and the regulation of water homeostasis at the blood-brain barrier and at the pia interface in particular.”

• AssumptionRests on an assumption: High Aqp4 expression on ILA membranes and contact with the pia surface indicate involvement in the glymphatic system and regulation of water homeostasis at the blood-brain barrier and pia interface.

May combine two claims.

While intralaminar astrocytes react to insults with varying levels of astrogliosis, ILAs are susceptible but not directly involved in the reaction against the disorder's development.

“While intralaminar astrocytes react to insults, with varying levels of astrogliosis (i.e., upregulation of GFAP as mRNA and protein, soma hypertrophy, increased number of processes, and loss of the organization in domains) (Escartin et al., 2021), ILAs are susceptible (Edler et al., 2023; Oberheim et al., 2006), but not directly involved in the reaction against the disorder’s development (Colombo,”

• cites Colombo, 2001 sourceNot checked — no full text of the source
• cites Colombo et al., 2002 sourceNot checked — no full text of the source

May combine two claims.

Major mental illnesses such as schizophrenia, bipolar disorders, and major depression are connected to significant abnormalities in glial functions and reduced glial density in several brain areas.

“Recent studies have shown that these disorders are also connected to significant abnormalities in glial functions and reduced glial density in several brain areas (Webster et al., 2001).”

• cites Webster et al., 2001 sourceNot checked — no full text of the source

May combine two claims.

The diameter of ILA processes increases with age, particularly at club-endings, which are more GFAP+ positive in older individuals.

“The diameter of ILA processes increases with age, particularly at the level of the club-endings that are more GFAP+ positive in older individuals”

• cites Colombo et al., 1998 sourceNot checked — no full text of the source

May combine two claims.

In horizontal sections, ILA labeling displays a honeycomb-like distribution with a diameter similar to pyramidal dendritic bundles in layers II and III.

“In horizontal sections, the same labeling displays a honeycomb-like distribution, with the diameter of the surrounding area similar to the pyramidal dendritic bundles located in layer II and III”

• cites Colombo et al., 1999 sourceNot checked — no full text of the source

Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

Multiple sclerosis starts as an autoimmune inflammatory reaction against myelin, leading to oligodendrocyte and neuronal axon degeneration in both white and gray matter.

“Multiple sclerosis (MS) starts as an autoimmune inflammatory reaction against myelin, leading to oligodendrocyte and neuronal axon degeneration in both white and gray matter (Amadio et al., 2010).”

• cites Amadio et al., 2010 sourceNot checked — no full text of the source

May combine two claims.

ILAs degenerate in neurodegenerative disorders such as Alzheimer's disease, confirming their involvement in response to insults.

“The involvement of ILAs in response to insults is further confirmed by their degeneration in neurodegenerative disorders such as Alzheimer’s disease (see next chapter).”

• AssumptionRests on an assumption: Degeneration or morphological change of ILAs in neurodegenerative disorders indicates their involvement in response to insults or disease pathogenesis.

May combine two claims.

In pathologies or inflammatory insults, AEVs can exert a neuroprotective role by moving neurotoxic molecules out of the cell and a neurotoxic effect by helping the spread of disease-associated molecules such as amyloids and/or prions.

“Indeed, they can exert a neuroprotective role [by moving neurotoxic molecules out of the cell (Falker et al., 2016)] together with a neurotoxic effect [by helping the spread of disease-associated molecules such as amyloids, and/or prions (Falker et al., 2016; Zhao et al., 2021)].”

• cites Falker et al., 2016 sourceNot checked — no full text of the source
• cites Zhao et al., 2021 sourceNot checked — no full text of the source

May combine two claims.

ILAs and VP-As are not only sensitive to various brain insults but also possibly adapt their morphology and function in response to specific diseased conditions.

“ILAs and VP-As are not only sensitive to various brain insults but also possibly adapt their morphology and function in response to specific diseased conditions.”

Probably not a substantial claim: may not pass S3 (load-bearing).

Astrocytes are active reservoirs for trace metals such as iron, copper, manganese and zinc, in order to fulfill nervous system demand and regulate CNS iconostasis.

“Astrocytes have also been found to be active reservoirs for trace metals such as iron, copper, manganese and zinc, in order to fulfill nervous system demand of such metals and thus regulating CNS iconostasis (Li et al., 2024).”

• cites Li et al., 2024Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

May combine two claims.

Fractal dimension analysis applied to astrocytes in pathologies causing dementia such as Alzheimer's disease, ischemia, or hemorrhage demonstrated morphological changes: astrocytes surround the core of the lesion in hemorrhage and spread the reaction diffusely in ischemia, whereas they surround neuritic dense plaques in Alzheimer's disease.

“Indeed, FD applied on astrocytes in the presence of pathologies causing dementia such as Alzheimer’s disease, Ischemia, or Hemorrhage demonstrated morphological changes (Pirici et al., 2009): astrocytes react differently to different insults. They surround the core of the lesion in hemorrhage and spread the reaction diffusely in ischemia. In contrast, they surround the neuritic dense plaques in”

• cites Pirici et al., 2009Not checked — no full text of the source

May combine two claims.

Astrocytes-derived extracellular vesicles (AEVs) are released in high numbers in resting conditions as horizontal messengers, completing the abilities of astrocytes.

“AEVs are released in high numbers in resting conditions as horizontal messengers, completing the abilities of astrocytes.”

May combine two claims.

In adults with Down's syndrome, destruction of the typical ILA palisade is more pronounced, especially in the presence of amyloid plaques, with variability reflecting individual severity and clinical progression.

“In adults, the destruction of the typical ILA palisade is even more pronounced, especially in the presence of amyloid plaques, with variability reflecting the individual severity and clinical progression of the syndrome.”

• cites Colombo et al., 2005 sourceNot checked — no full text of the source

May combine two claims.

Fractal dimension was not adequate to describe the complexity of the interlaminar processes, while compression analysis appeared to be an effective method to analyze the different tortuosity of ILA's processes.

“However, while FD was not adequate to describe the complexity of the interlaminar processes, CA (taken a region of interest, it is measured by the variable k = absolute length of the process / effective length of the process) appeared to be an effective method to analyze the different tortuosity of ILA’s processes.”

May combine two claims.

VP-As are present in apes (chimpanzee, bonobo, orangutan, gorilla, gibbon, and siamang), but not in other primates.

“it was later found by Falcone et al. (2022) that VP-As are also present in apes (chimpanzee, bonobo, orangutan, gorilla, gibbon, and siamang), but not in other primates.”

• cites Falcone et al. (2022) sourceNot checked — no full text of the source

May combine two claims.

Mercury exposure has been associated with the development of Alzheimer's disease, multiple sclerosis, and Amyotrophic Lateral Sclerosis.

“Mercury (Hg) exposure, for instance, has been associated with the development of AD, MS, and Amyotrophic Lateral Sclerosis (ALS).”

• cites Li et al., 2021, 2024Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

May combine two claims.

As dementia advances in Down's syndrome, the ILA palisade is almost completely destroyed, accompanied by an increase in astrogliosis in the astrocytic network.

“As dementia advances, the ILA palisade is almost completely destroyed, accompanied by an increase in astrogliosis in the astrocytic network (Colombo et al., 2005).”

• cites Colombo et al., 2005 sourceNot checked — no full text of the source

Probably not a substantial claim: may not pass S3 (load-bearing).

Reisin and Colombo (2002) described three different morphologies for the long interlaminar processes, suggesting regional adaptation of ILAs.

“The first attempt was performed by Reisin and Colombo (2002), trying to describe three different morphologies for the long interlaminar processes, suggesting regional adaptation of ILAs (Reisin and Colombo, 2002).”

• cites Reisin and Colombo, 2002 sourceNot checked — no full text of the source

May combine two claims.

In epilepsy, regions with high spiking activity are linked with decreased GFAP expression in certain brain areas, high levels of astrogliosis (Chaslin's gliosis), and loss of the typical astrocytic domain.

“Recent studies have shown that regions with high spiking activity are linked with decreased GFAP expression in certain brain areas, high levels of astrogliosis (Chaslin’s gliosis), and loss of the typical astrocytic domain (Zhou et al., 2023).”

• cites Zhou et al., 2023 sourceNot checked — no full text of the source

May combine two claims.

In Down's syndrome, no differences are observed between DS and healthy patients at birth; by 6 months of age, there is a general alteration of the tortuosity and parallelism typical of ILA long processes, becoming particularly visible by the end of the first year of life.

“While no differences are observed between DS and healthy patients at birth, by 6 months of age, there is a general alteration of the tortuosity and parallelism typical of ILA long processes. These changes become particularly visible by the end of the first year of life (Colombo et al., 2005; Colombo and Reisin, 2004).”

• cites Colombo et al., 2005 sourceNot checked — no full text of the source
• cites Colombo and Reisin, 2004 sourceNot checked — no full text of the source

May combine two claims.

No species-related differences in morphology were noticed between VP-As belonging to humans and great apes, and they are localized in all the areas of the brain.

“No species-related differences in morphology were noticed between VP-As belonging to humans and great-apes and they are localized in all the areas of the brain (Falcone et al., 2022).”

• cites Falcone et al., 2022 sourceNot checked — no full text of the source

May combine two claims.

Patients with epileptic attacks have a higher number of ILAs in the first layer of the temporal lobe, unlike other neurodegenerative disorders such as Alzheimer's disease, and the long processes in these patients do not appear damaged, especially in those with treatable epilepsy.

“Interestingly, patients with epileptic attacks have a higher number of ILAs in the first layer of the temporal lobe, unlike other neurodegenerative disorders such as AD, and the long processes in these patients do not appear damaged, especially in those with treatable epilepsy.”

• cites Zhou et al., 2023 sourceNot checked — no full text of the source

May combine two claims.

VP-A presence co-occurs with the appearance of varicosities along ILA perpendicular fibers, strengthening the hypothesis that VP-As may arise from a morphological change in resident astrocytes in response to specific insults.

“Additionally, VP-A’s presence co-occurre together with the appearance of varicosities along ILA perpendicular fibers, strengthening the hypothesis that VP-As may arise from a morphological change in resident astrocytes in response to specific insults (Falcone et al., 2022).”

• cites Falcone et al., 2022 sourceNot checked — no full text of the source