Review links spina bifida, tethered cord, and animal models
Bottom line
A new review in The Neuroscientist argues that spina bifida and tethered cord syndrome should be studied more as overlapping conditions, especially because their combined effects on neurogenic bladder and bowel function remain clinically important and underexamined. The paper, by Gabriela X. Brown and John C. Gensel, highlights how spina bifida arises from incomplete neural tube closure, while tethered cord syndrome reflects abnormal fixation and stretch of the spinal cord, and notes that co-occurrence is common enough to shape presentation, progression, and management. The review also emphasizes animal models as a way to close persistent gaps between basic science and bedside care. (pubmed.ncbi.nlm.nih.gov)
Why it matters: For veterinary professionals, the paper is a reminder that naturally occurring and experimental animal models may have translational value well beyond neurology alone, particularly for bladder and bowel dysfunction that can be difficult to model and manage. That matters in comparative medicine: recent veterinary literature has described lumbosacral meningoceles and related tethered cord syndrome in dogs, especially bulldog-type breeds, and stressed the need for earlier recognition of neurologic, urinary, and fecal signs. In human care, current Spina Bifida Association guidance continues to frame tethered cord, neurogenic bladder, and neurogenic bowel as closely linked, multidisciplinary management problems, underscoring the relevance of better cross-species models. (frontiersin.org)
What to watch: Watch for whether this review helps steer future comparative studies toward bladder and bowel endpoints, not just motor deficits, and whether canine tethered cord cases gain more attention as translational models. (frontiersin.org)
Key facts
- Journal
- The Neuroscientist
- Article type
- Review
- Authors
- Gabriela X. Brown and John C. Gensel
- Conditions
- Spina bifida and tethered cord syndrome
- Main focus
- Neurogenic bladder and bowel dysfunction
- Core argument
- The conditions should be studied as overlapping, clinically important conditions
- Mechanistic distinction
- Spina bifida arises from incomplete neural tube closure; tethered cord syndrome reflects abnormal spinal cord fixation and stretch
- Research gap
- Combined effects on bladder and bowel function are underexamined
- Modeling approach
- Animal models may help bridge basic science and bedside care
A review article in The Neuroscientist is calling for a more integrated view of spina bifida and tethered cord syndrome, two conditions that are often discussed separately despite frequent clinical overlap. Brown and Gensel focus particular attention on neurogenic bladder and bowel dysfunction, arguing that these complications are both consequential and understudied, and that animal models could help bridge longstanding gaps between mechanistic research and patient care. (pubmed.ncbi.nlm.nih.gov)
That framing lands in a field where the evidence base is still uneven. A recent AHRQ-linked systematic review of tethered spinal cord diagnosis and treatment found a large body of literature, but also widespread risk of bias, applicability concerns, and a need for better controlled studies. At the same time, established guidance from the Spina Bifida Association continues to treat tethered cord, bladder dysfunction, and bowel dysfunction as tightly connected clinical issues that require coordinated neurosurgical, urologic, and bowel-management follow-up. (pmc.ncbi.nlm.nih.gov)
The review’s core contribution appears to be synthesis. Spina bifida is a neural tube defect, while tethered cord syndrome is a disorder of abnormal spinal cord fixation and tension, but in practice the two can coexist and drive progressive neurologic, urinary, and gastrointestinal impairment. Human literature cited across recent reviews and guidelines consistently points to bowel and bladder decline as part of the tethered cord clinical picture, while spina bifida guidance notes that neurogenic bladder is present in the large majority of affected patients and neurogenic bowel is also common and often life-shaping. (pubmed.ncbi.nlm.nih.gov)
The paper’s emphasis on animal models also connects with an active veterinary conversation. A 2025 Frontiers in Veterinary Science review described lumbosacral meningoceles and myelomeningoceles in dogs, along with related tethered cord syndrome, and said these cases are being encountered more often as bulldog-type breeds grow in popularity. That review urged small animal practitioners to recognize dorsal midline cutaneous signs, gait abnormalities, urinary dysfunction, and fecal incontinence as possible clues. Inference: if Brown and Gensel are arguing for stronger preclinical-clinical alignment, naturally occurring canine disease could become more visible in translational discussions because it offers a spontaneous, clinically managed model rather than an induced laboratory phenotype. (frontiersin.org)
Direct outside commentary on this specific review was limited in the material available online, but the broader expert consensus is clear on the management burden. Spina Bifida Association guidance updated through 2025 emphasizes structured bowel programs, renal preservation, continence goals, and surveillance for clinical signs of tethered cord, including worsening bladder or bowel control. The International Children’s Continence Society and other reviews likewise place urodynamic and bowel-bladder changes at the center of evaluation, even as questions remain about optimal timing, diagnostics, and intervention thresholds. (spinabifidaassociation.org)
Why it matters: For veterinary professionals, this is less about a new treatment than about a stronger comparative framework. The review reinforces that bowel and bladder dysfunction deserve as much attention as locomotor deficits when evaluating animal models of spinal dysraphism and tethering. That could matter for academic veterinary neurology, surgery, rehabilitation, and translational research programs, especially those working with spontaneous canine cases or with preclinical models intended to inform pediatric neurosurgery and urology. It also supports a more multidisciplinary lens in practice, where urinary and fecal signs may be early indicators of clinically meaningful tethering rather than secondary concerns. (frontiersin.org)
What to watch: The next signal will be whether this review is followed by studies that standardize bladder and bowel outcome measures across animal models, or by comparative work that more explicitly positions canine tethered cord and spinal dysraphism cases as translational assets for human spina bifida research. (frontiersin.org)