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  1. Article ; Online: Gut microbiota profile in CDKL5 deficiency disorder patients.

    Borghi, Elisa / Xynomilakis, Ornella / Ottaviano, Emerenziana / Ceccarani, Camilla / Viganò, Ilaria / Tognini, Paola / Vignoli, Aglaia

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 7376

    Abstract: CDKL5 deficiency disorder (CDD) is a neurodevelopmental condition characterized by global developmental delay, early-onset seizures, intellectual disability, visual and motor impairments. Unlike Rett Syndrome (RTT), CDD lacks a clear regression period. ... ...

    Abstract CDKL5 deficiency disorder (CDD) is a neurodevelopmental condition characterized by global developmental delay, early-onset seizures, intellectual disability, visual and motor impairments. Unlike Rett Syndrome (RTT), CDD lacks a clear regression period. Patients with CDD frequently encounter gastrointestinal (GI) disturbances and exhibit signs of subclinical immune dysregulation. However, the underlying causes of these conditions remain elusive. Emerging studies indicate a potential connection between neurological disorders and gut microbiota, an area completely unexplored in CDD. We conducted a pioneering study, analyzing fecal microbiota composition in individuals with CDD (n = 17) and their healthy relatives (n = 17). Notably, differences in intestinal bacterial diversity and composition were identified in CDD patients. In particular, at genus level, CDD microbial communities were characterized by an increase in the relative abundance of Clostridium_AQ, Eggerthella, Streptococcus, and Erysipelatoclostridium, and by a decrease in Eubacterium, Dorea, Odoribacter, Intestinomonas, and Gemmiger, pointing toward a dysbiotic profile. We further investigated microbiota changes based on the severity of GI issues, seizure frequency, sleep disorders, food intake type, impairment in neuro-behavioral features and ambulation capacity. Enrichment in Lachnoclostridium and Enterobacteriaceae was observed in the microbiota of patients with more severe GI symptoms, while Clostridiaceae, Peptostreptococcaceae, Coriobacteriaceae, Erysipelotrichaceae, Christensenellaceae, and Ruminococcaceae were enriched in patients experiencing daily epileptic seizures. Our findings suggest a potential connection between CDD, microbiota and symptom severity. This study marks the first exploration of the gut-microbiota-brain axis in subjects with CDD. It adds to the growing body of research emphasizing the role of the gut microbiota in neurodevelopmental disorders and opens doors to potential interventions that target intestinal microbes with the aim of improving the lives of patients with CDD.
    MeSH term(s) Humans ; Gastrointestinal Microbiome/physiology ; Spasms, Infantile ; Epileptic Syndromes ; Rett Syndrome/genetics ; Seizures ; Protein Serine-Threonine Kinases
    Chemical Substances CDKL5 protein, human (EC 2.7.11.22) ; Protein Serine-Threonine Kinases (EC 2.7.11.1)
    Language English
    Publishing date 2024-03-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-56989-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Topical Nerve Growth Factor (NGF) restores electrophysiological alterations in the Ins2

    Castoldi, Valerio / Zerbini, Gianpaolo / Maestroni, Silvia / Viganò, Ilaria / Rama, Paolo / Leocani, Letizia

    Experimental eye research

    2023  Volume 237, Page(s) 109693

    Abstract: People suffering from diabetes mellitus commonly have to face diabetic retinopathy (DR), an eye disease characterized by early retinal neurodegeneration and microvascular damage, progressively leading to sight loss. The ... ...

    Abstract People suffering from diabetes mellitus commonly have to face diabetic retinopathy (DR), an eye disease characterized by early retinal neurodegeneration and microvascular damage, progressively leading to sight loss. The Ins2
    MeSH term(s) Animals ; Mice ; Diabetes Mellitus, Experimental/drug therapy ; Diabetes Mellitus, Experimental/metabolism ; Diabetic Retinopathy/metabolism ; Disease Models, Animal ; Insulin/metabolism ; Nerve Growth Factor/pharmacology ; Retina/metabolism
    Chemical Substances Ins2 protein, mouse ; Insulin ; Nerve Growth Factor (9061-61-4)
    Language English
    Publishing date 2023-10-27
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80122-7
    ISSN 1096-0007 ; 0014-4835
    ISSN (online) 1096-0007
    ISSN 0014-4835
    DOI 10.1016/j.exer.2023.109693
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  3. Article ; Online: Progressive Thinning of Retinal Nerve Fiber Layer/Ganglion Cell Layer (RNFL/GCL) as Biomarker and Pharmacological Target of Diabetic Retinopathy.

    Zerbini, Gianpaolo / Maestroni, Silvia / Viganò, Ilaria / Mosca, Andrea / Paleari, Renata / Gabellini, Daniela / Galbiati, Silvia / Rama, Paolo

    International journal of molecular sciences

    2023  Volume 24, Issue 16

    Abstract: Diabetes-driven retinal neurodegeneration has recently been shown to be involved in the initial phases of diabetic retinopathy, raising the possibility of setting up a preventive strategy based on early retinal neuroprotection. To make this possible, it ... ...

    Abstract Diabetes-driven retinal neurodegeneration has recently been shown to be involved in the initial phases of diabetic retinopathy, raising the possibility of setting up a preventive strategy based on early retinal neuroprotection. To make this possible, it is crucial to identify a biomarker for early retinal neurodegeneration. To this end, in this study, we verified and confirmed that, in the Akita mouse model of diabetes, the thinning of the retinal nerve fiber layer/ganglion cell layer (the RNFL/GCL-the layer that contains the retinal ganglion cells) precedes the death of these same cells, suggesting that this dysfunction is a possible biomarker of retinal neurodegeneration. We then confirmed the validity of this assumption by starting a neuroprotective treatment (based on nerve growth factor eye drops) in concert with the first demonstration of RNFL/GCL thinning. In this way, it was possible not only to avoid the loss of retinal ganglion cells but also to prevent the subsequent development of the microvascular stage of diabetic retinopathy. In conclusion, in the case of diabetes, the thinning of the RNFL/GCL appears to be both a valid biomarker and a pharmacological target of diabetic retinopathy; it precedes the development of vascular dysfunctions and represents the ideal starting point for prevention.
    MeSH term(s) Animals ; Mice ; Diabetic Retinopathy/drug therapy ; Retina ; Retinal Ganglion Cells ; Biomarkers ; Nerve Fibers ; Diabetes Mellitus
    Chemical Substances Biomarkers
    Language English
    Publishing date 2023-08-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms241612672
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  4. Article ; Online: Diabetes has no additional impact on retinal ganglion cell loss in a mouse model of spontaneous glaucoma.

    Maestroni, Silvia / Belvedere, Arianna / Viganò, Ilaria / Meoni, Cesare / Di Matteo, Federico / Gabellini, Daniela / Bandello, Francesco / Pierro, Luisa / Zerbini, Gianpaolo

    European journal of ophthalmology

    2022  Volume 33, Issue 3, Page(s) 1418–1424

    Abstract: Purpose: There is no valid medical treatment for diabetic retinopathy mostly because its pathogenesis remains largely unknown. Early stages of diabetic retinopathy, just like glaucoma, are characterized by the loss of retinal ganglion cells. Whether the ...

    Abstract Purpose: There is no valid medical treatment for diabetic retinopathy mostly because its pathogenesis remains largely unknown. Early stages of diabetic retinopathy, just like glaucoma, are characterized by the loss of retinal ganglion cells. Whether the two diseases may share a similar pathogenic background is unknown.
    Methods: To clarify this issue the thickness of retinal nerve fiber layer was studied
    Results: At 16 weeks of age retinal nerve fiber layer was significantly thinner in Ins2Akita mice confirming the neurodegenerative impact of diabetes. Number of retinal ganglion cells and retina's surface covered by neurofilaments were similar in normoglycemic and diabetic DBA/2J mice with the exception of the superior quadrant where the number of retinal ganglion cells was increased in animals with glaucoma + diabetes.
    Conclusions: In presence of glaucoma, diabetes is unable to induce further retinal ganglion cells loss. The hypothesis that the mechanism leading to retinal ganglion cells loss may be shared by the two diseases cannot be ruled out. Whether early diabetes-driven retinal neurodegeneration could be prevented by neuroprotective treatment proven to be effective in case of glaucoma, remains to be clarified.
    MeSH term(s) Mice ; Animals ; Retinal Ganglion Cells/pathology ; Diabetic Retinopathy/metabolism ; Mice, Inbred DBA ; Mice, Inbred C57BL ; Glaucoma/diagnosis ; Glaucoma/metabolism ; Disease Models, Animal ; Diabetes Mellitus/metabolism
    Language English
    Publishing date 2022-12-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1089461-5
    ISSN 1724-6016 ; 1120-6721
    ISSN (online) 1724-6016
    ISSN 1120-6721
    DOI 10.1177/11206721221145980
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Long-term analysis of the effects of COVID-19 in people with epilepsy: Results from a multicenter on-line survey across the pandemic waves.

    Parodi, Chiara / Viganò, Ilaria / Ottaviano, Emerenziana / Massa, Valentina / Borghi, Elisa / Beretta, Simone / Di Francesco, Jacopo C / Badioni, Valeria / Vignoli, Aglaia

    Epilepsy & behavior : E&B

    2022  Volume 135, Page(s) 108900

    Abstract: Purpose: The worldwide pandemic caused by SARS-CoV-2 virus posed many challenges to the scientific and medical communities, including the protection and management of fragile populations. People with epilepsy (PWE) are a heterogenous group of subjects, ... ...

    Abstract Purpose: The worldwide pandemic caused by SARS-CoV-2 virus posed many challenges to the scientific and medical communities, including the protection and management of fragile populations. People with epilepsy (PWE) are a heterogenous group of subjects, with different treatment regimens and severity of symptoms. During the National lockdown, in Italy many patients with chronic conditions lost their regular follow-up program. The aim of this study was to investigate the impact of COVID-19 on their health status, from the start of the pandemic (March 2020) to July 2021 and one year later.
    Methods: We proposed an online questionnaire to subjects followed up at different epilepsy centers located in Milano, Monza & Lodi, three of Lombardy, Northern Italy, the most affected areas by the pandemic. Survey evaluated age, sex, characteristics of patients, type of epilepsy and therapies, COVID-19 diagnosis, vaccines, sleep quality, and anxiety status.
    Results: Among 178 analyzed surveys, 37 individuals reported symptoms of COVID-19 in closed contacts, including 9 with molecular diagnosis and 16 PWE performing the nasopharyngeal swab with 3 positive cases. One year later, 35 individuals reported at least one symptom overlapping with those typical of COVID-19, 8 received COVID-19 diagnosis, among which 6 were positive for SARS-CoV-2 infection. According to the sleep quality scale assessment, most PWE (52.3%) had poor sleep quality. Assessing anxiety status, 32 (38.1%) had a pathological score.
    Conclusion: In this multicenter study, we observed that PWE do not appear to be at a higher risk of severe COVID-19. It will be fundamental monitoring this group to assess possible differences in long-COVID-19 and/or neuro-COVID-19 prevalence. On the other hand, our survey confirmed the impact of the pandemic on anxiety and quality of sleep in PWE. Thus, it is important to promptly recognize and treat psychological distress in PWE, because it could be a risk factor in seizure aggravation and quality-of-life deterioration. Telemedicine appears to be a useful tool to support patients with chronic diseases, such as epilepsy.
    MeSH term(s) COVID-19/complications ; COVID-19/epidemiology ; COVID-19 Testing ; Communicable Disease Control ; Epilepsy/psychology ; Humans ; Pandemics ; SARS-CoV-2 ; Surveys and Questionnaires
    Language English
    Publishing date 2022-08-25
    Publishing country United States
    Document type Journal Article ; Multicenter Study
    ZDB-ID 2010587-3
    ISSN 1525-5069 ; 1525-5050
    ISSN (online) 1525-5069
    ISSN 1525-5050
    DOI 10.1016/j.yebeh.2022.108900
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  6. Article: Short-and Long-Term Expression of Vegf: A Temporal Regulation of a Key Factor in Diabetic Retinopathy.

    Bucolo, Claudio / Barbieri, Annalisa / Viganò, Ilaria / Marchesi, Nicoletta / Bandello, Francesco / Drago, Filippo / Govoni, Stefano / Zerbini, Gianpaolo / Pascale, Alessia

    Frontiers in pharmacology

    2021  Volume 12, Page(s) 707909

    Abstract: To investigate the role of vascular endothelial growth factor (VEGF) at different phases of diabetic retinopathy (DR), we assessed the retinal protein expression of VEGF- ... ...

    Abstract To investigate the role of vascular endothelial growth factor (VEGF) at different phases of diabetic retinopathy (DR), we assessed the retinal protein expression of VEGF-A
    Language English
    Publishing date 2021-08-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2021.707909
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  7. Article ; Online: Is Gut Microbiota a Key Player in Epilepsy Onset? A Longitudinal Study in Drug-Naive Children.

    Ceccarani, Camilla / Viganò, Ilaria / Ottaviano, Emerenziana / Redaelli, Maria Gaia / Severgnini, Marco / Vignoli, Aglaia / Borghi, Elisa

    Frontiers in cellular and infection microbiology

    2021  Volume 11, Page(s) 749509

    Abstract: Microbiota alterations have been recently investigated in individuals with epilepsy and in other neurological diseases as environmental factors that play a role, by acting through the gut-brain axis, in the pathological process. Most studies focus on the ...

    Abstract Microbiota alterations have been recently investigated in individuals with epilepsy and in other neurological diseases as environmental factors that play a role, by acting through the gut-brain axis, in the pathological process. Most studies focus on the contribution of bacterial communities in refractory epilepsy and suggest a beneficial role of ketogenic diet in modulating the gut microbiota and seizure occurrence. However, they do not evaluate whether epilepsy itself alters the gut microbiota in these patients or if the gut microbial communities could contribute as a seizure trigger. In this pilot study, we performed 16S rRNA sequencing and investigated the gut microbial communities of eight children at their seizure onset and after anti-seizure was started (one year follow-up) and we compared microbial data with seven healthy children, age- and sex-matched. In drug-naive subjects, we observed a microbial signature that shared several features with those reported in refractory epilepsy, such as an increased abundance in
    MeSH term(s) Brain-Gut Axis ; Child ; Epilepsy ; Gastrointestinal Microbiome ; Humans ; Longitudinal Studies ; Pharmaceutical Preparations ; Pilot Projects ; RNA, Ribosomal, 16S/genetics
    Chemical Substances Pharmaceutical Preparations ; RNA, Ribosomal, 16S
    Language English
    Publishing date 2021-12-03
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2021.749509
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  8. Article ; Online: Pott's Disease: An Emerging Source of Potentially Inappropriate Treatment.

    Esposito, Silvia / Moscatelli, Marco / Schiariti, Marco Paolo / Viganò, Ilaria / Pantaleoni, Chiara / Marucci, Gianluca

    Neuropediatrics

    2019  Volume 50, Issue 5, Page(s) 334–335

    Abstract: Spinal Tuberculosis in children is uncommon, even more so in cases of involvement of posterior vertebral elements, and its diagnosis is often delayed. Here we report the case of a young female presenting neuroradiological features and clinical symptoms ... ...

    Abstract Spinal Tuberculosis in children is uncommon, even more so in cases of involvement of posterior vertebral elements, and its diagnosis is often delayed. Here we report the case of a young female presenting neuroradiological features and clinical symptoms suspicious for malignant tumor. Histological examination of biopsy specimen evidenced a Pott's disease. We highlight the importance of suspecting this disorder in children with both aspecific systemic and neurological symptoms, in order to reach a timely diagnosis for appropriate and targeted intervention, avoiding the risk of overtreatment and malpractice claims.
    MeSH term(s) Child ; Diagnostic Errors ; Female ; Humans ; Spinal Neoplasms/diagnostic imaging ; Spinal Neoplasms/pathology ; Spine/diagnostic imaging ; Spine/pathology ; Tuberculosis, Spinal/diagnostic imaging ; Tuberculosis, Spinal/pathology
    Language English
    Publishing date 2019-05-29
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 573291-8
    ISSN 1439-1899 ; 0174-304X
    ISSN (online) 1439-1899
    ISSN 0174-304X
    DOI 10.1055/s-0039-1691833
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  9. Article ; Online: Chiari I malformation in defined genetic syndromes in children: are there common pathways?

    Saletti, Veronica / Viganò, Ilaria / Melloni, Giulia / Pantaleoni, Chiara / Vetrano, Ignazio Gaspare / Valentini, Laura Grazia

    Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery

    2019  Volume 35, Issue 10, Page(s) 1727–1739

    Abstract: Purpose: Chiari malformation type I (CMI) is a common pediatric neurologic anomaly that can be associated with a variety of genetic disorders; however, it is not always clear whether the observed associations are real or random. The knowledge of the ... ...

    Abstract Purpose: Chiari malformation type I (CMI) is a common pediatric neurologic anomaly that can be associated with a variety of genetic disorders; however, it is not always clear whether the observed associations are real or random. The knowledge of the real associations could provide useful guidance to clinicians. Furthermore, it could be of help to better understand the still unknown genetic etiology of CMI.
    Methods: With the aim of implementing such insights, we retrospectively reviewed clinical, neuroradiological, and genetic data of patients harboring CMI evaluated at the Child Neurology Unit of our institution between January 2008 and December 2018.
    Results: The cohort consists of 205 patients (111 males and 94 females), with a mean age at diagnosis of 6.3 years (range 0-18 years). 188 patients completed an average follow-up period of 5.2 years (range one month-18 years). Mean age at last assessment was 11.4 years (range nine months-23 years). 127 (62%) children have been classified as syndromic due to the presence of neurodevelopmental disorders, phenotypic anomalies, or malformations. Among syndromic CMI children, a molecular diagnosis was identified in 35/127 (27.6%) (20 males and 15 females). The most common diagnoses were syndromic craniosynostosis in 8/35 children (22.9%), among which sevenare FGFR-related and one ERF-related craniosynostosis; disorders of the RAS/MAPK pathway, termed RASopathies or RAS/MAPK syndromes in 9/35 (25.7%); disorders of the PTEN-PI3K/AKT signal transduction cascade, termed PTENopathies in 3/35 children (8.6%); and chromosomal rearrangements in 6/35 patients (17.1%), two of whom with del16p11.2.
    Conclusions: We polarized our attention on the defined genetic diagnoses focusing not only on the phenotypic hallmarks but also on the phenotypic overlapping features. In addition, we discussed the pathophysiological mechanisms leading to progressive cerebellar ectopia and the involved molecular pathways. Along with the recent literature evidence, we suppose that interactions between FGFR and RAS/MAPK pathway and between RAS/MAPK and PTEN-PI3K/AKT pathways could explain some phenotypic overlapping features and could have a significant role in the pathogenesis of CMI.
    MeSH term(s) Adolescent ; Arnold-Chiari Malformation/diagnostic imaging ; Arnold-Chiari Malformation/epidemiology ; Arnold-Chiari Malformation/genetics ; Child ; Child, Preschool ; Cohort Studies ; Female ; Follow-Up Studies ; Genetic Diseases, Inborn/diagnostic imaging ; Genetic Diseases, Inborn/epidemiology ; Genetic Diseases, Inborn/genetics ; Humans ; Infant ; Infant, Newborn ; Male ; Retrospective Studies
    Language English
    Publishing date 2019-07-30
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 605988-0
    ISSN 1433-0350 ; 0302-2803 ; 0256-7040
    ISSN (online) 1433-0350
    ISSN 0302-2803 ; 0256-7040
    DOI 10.1007/s00381-019-04319-5
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  10. Article: Topical nerve growth factor prevents neurodegenerative and vascular stages of diabetic retinopathy.

    Zerbini, Gianpaolo / Maestroni, Silvia / Leocani, Letizia / Mosca, Andrea / Godi, Michela / Paleari, Renata / Belvedere, Arianna / Gabellini, Daniela / Tirassa, Paola / Castoldi, Valerio / Viganò, Ilaria / Galbiati, Silvia / Turco, Valentina / Lambiase, Alessandro / Rama, Paolo

    Frontiers in pharmacology

    2022  Volume 13, Page(s) 1015522

    Abstract: Specific and effective preventive treatment for diabetic retinopathy (DR) is presently unavailable, mostly because the early stages of the complication have been, until recently, poorly understood. The recent demonstration that the vascular phase of DR ... ...

    Abstract Specific and effective preventive treatment for diabetic retinopathy (DR) is presently unavailable, mostly because the early stages of the complication have been, until recently, poorly understood. The recent demonstration that the vascular phase of DR is preceded and possibly caused by the neurodegeneration of retinal ganglion cells suggests that DR could, at least theoretically, be prevented through an early neuroprotective approach. The aims of our study were to clarify the natural history of diabetes-driven retinal neurodegeneration and to verify the possibility to prevent DR using topical nerve growth factor (NGF). The results of the study show that retinal neurodegeneration, characterized by the loss of retinal ganglion cells represents a relatively early phenomenon of diabetes (between 5 and 16 weeks of age), which tends to be self-limiting in the long run. Neurodegeneration is followed by the development of DR-related vascular dysfunctions, as confirmed by the development of acellular capillaries and the loss of retinal pericytes. Both retinal neurodegeneration and subsequent vascular dysfunction can be successfully prevented by topical NGF administration. These findings suggest that: 1) The first stage of DR consists in a self-limiting retinal neurodegeneration 2) The demonstrated effectiveness of topical NGF in the prevention of DR could be rapidly translated into clinical practice.
    Language English
    Publishing date 2022-09-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2022.1015522
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