Study links laparoscopic spay to lower stress markers in dogs
Bottom line
Version 1
A new prospective randomized clinical trial in Veterinary Surgery found that laparoscopic elective ovariectomy in anestrus dogs produced a milder, shorter-lived systemic inflammatory and oxidative stress response than open surgery. The study enrolled 26 healthy bitches and compared biomarkers after laparoscopic versus laparotomic ovariectomy, adding to a growing body of evidence that minimally invasive spay techniques may reduce surgical stress. PubMed’s summary describes it as the first study to apply both canine-specific inflammatory biomarkers and canine-validated oxidative stress markers to this comparison in dogs in anestrus. Earlier related work has also pointed in the same direction, including a 2025 study from the same research group on postoperative recovery and inflammatory biomarkers, and prior reports linking laparoscopic ovariectomy with lower cortisol or oxidative stress than open approaches. (pubmed.ncbi.nlm.nih.gov)
Why it matters: For veterinary professionals, the study strengthens the case that laparoscopy may offer physiologic as well as recovery-related advantages in routine sterilization procedures, at least in appropriately selected canine patients and in practices equipped to perform minimally invasive surgery. That could matter for perioperative pain management, client communication with pet parents, and decisions about investing in laparoscopic capability. At the same time, the evidence base is still relatively small, and this trial was limited to anestrus dogs, so the findings shouldn’t be overgeneralized to every patient, reproductive stage, or practice setting. (pubmed.ncbi.nlm.nih.gov)
What to watch: Watch for full-text publication details, follow-on studies in broader canine populations, and whether these biomarker findings translate into stronger consensus around when laparoscopy should be preferred in general practice. (pubmed.ncbi.nlm.nih.gov)
Version 2
A newly indexed Veterinary Surgery study adds fresh evidence to the case for minimally invasive spay techniques in dogs. In a prospective randomized clinical trial of 26 anestrus bitches, researchers reported that laparoscopic elective ovariectomy triggered a milder and more transient inflammatory and oxidative stress response than open surgery, suggesting a lower physiologic burden from the laparoscopic approach. (pubmed.ncbi.nlm.nih.gov)
The paper builds on several years of work comparing open and laparoscopic ovariectomy in dogs, but it pushes the conversation beyond procedure time and visible recovery. According to the PubMed record, this is the first study to use both canine-specific inflammatory biomarkers and canine-validated oxidative stress markers to compare the two techniques in anestrus dogs. That matters because prior studies have often relied on more limited marker sets, pain scores, or recovery observations. (pubmed.ncbi.nlm.nih.gov)
There’s also continuity with earlier publications from the same broader research track. A 2025 study, also involving investigators from the University of Naples Federico II group, compared postoperative recovery, pain, and inflammatory biomarkers in anestrus dogs undergoing laparoscopic versus open ovariectomy. That paper found C-reactive protein remained a useful postoperative inflammation marker, while serum amyloid A was less reliable for detecting mild surgical stress in this setting. Separate earlier work from other groups reported lower postoperative cortisol and less oxidative stress after laparoscopic ovariectomy under matched anesthesia protocols. (pubmed.ncbi.nlm.nih.gov)
Taken together, the newer findings suggest the advantage of laparoscopy may not be limited to cosmetic incision size or pet parent perception of faster recovery. The newer study indicates a measurable difference in systemic inflammatory and oxidative stress responses, which supports the idea that reduced tissue trauma can be reflected in laboratory markers as well as clinical outcomes. That aligns with prior literature in dogs undergoing ovariectomy or related reproductive procedures, although some earlier reports have noted that pneumoperitoneum can complicate the oxidative stress picture and deserves attention in anesthesia and surgical planning. (pubmed.ncbi.nlm.nih.gov)
Direct outside commentary on this specific paper appears limited so far, likely because it was published only recently. Still, the broader field has been moving in this direction. A 2018 BMC Veterinary Research paper on laparoscopic management of ovarian remnant syndrome noted established advantages of laparoscopic ovariectomy in dogs, including reduced surgical stress, postoperative pain, and shorter convalescence. More recent comparative studies in 2024 and 2025 have continued to report lower inflammatory or oxidative responses with laparoscopic approaches when available and appropriately performed. (bmcvetres.biomedcentral.com)
Why it matters: For veterinary teams, this is the kind of evidence that can shape both clinical decision-making and business planning. If laparoscopic ovariectomy consistently produces lower inflammatory and oxidative stress responses, that supports its value not just as a premium-service option, but as a technique with meaningful physiologic benefits. Practices may use findings like these when discussing surgical options with pet parents, evaluating perioperative protocols, or considering investment in minimally invasive equipment and training. But the practical caveats remain important: the sample size was modest, the dogs were specifically in anestrus, and outcomes from referral or university settings don’t always map neatly onto every general practice workflow. (pubmed.ncbi.nlm.nih.gov)
The study also lands in the context of evolving reproductive-care guidance. The 2024 WSAVA reproduction guidelines, cited in the PubMed record, underscore how individualized decisions around sterilization timing and technique have become. In that environment, evidence comparing surgical approaches at the biomarker level may become more relevant, especially as practices try to balance patient welfare, efficiency, cost, and client expectations. (pubmed.ncbi.nlm.nih.gov)
What to watch: The next step is whether future studies confirm these findings in larger and more diverse canine populations, including different reproductive stages, ages, and comorbidity profiles, and whether professional guidance begins to more explicitly distinguish between open and laparoscopic approaches for elective ovariectomy. (pubmed.ncbi.nlm.nih.gov)