The diagnostic component of the study is a striking demonstration of how much the choice of test matters. Of 138 samples screened from dogs with suspected babesiosis, the rapid antibody test detected 43 infections, or 31.15 percent. Microscopic examination of blood smears, still the workhorse of parasitology in many clinics, found 70 positive cases, or 50.72 percent. But polymerase chain reaction, the molecular gold standard, confirmed 85 infections, or 61.59 percent of the cohort. The gap between the smear and PCR results is not academic; it means that in a substantial fraction of infected dogs, low-level parasitaemia escapes microscopic detection, allowing animals to remain infectious reservoirs while receiving no treatment. For practitioners in endemic regions, the study’s numbers argue strongly for PCR confirmation whenever clinical suspicion is high but the smear is negative.

Clinically, the infected dogs presented with a constellation of signs that will be familiar to any veterinarian in a Babesia-endemic area. The most consistent findings were depression and lethargy, inappetence or outright anorexia, and pyrexia. These are non-specific complaints, and the study underscores how easily early babesiosis can be mistaken for other febrile illnesses. What elevates the disease’s danger, however, is what happens beneath the surface, where the haematological and biochemical machinery of the body begins to fail in interlocking ways.

The haemogram revealed the classic hallmarks of B. gibsoni infection: anaemia from the destruction of parasitised red cells, thrombocytopaenia reflecting both immune-mediated platelet loss and consumption, and leukocytosis accompanied by neutrophilia and eosinophilia, signatures of a pronounced inflammatory response. On the biochemistry panel, the picture of systemic insult deepened. Dogs showed hypoproteinaemia and hypoalbuminaemia, consistent with protein loss and hepatic dysfunction, alongside hyperbilirubinaemia from red cell breakdown. Azotaemia pointed to renal compromise, while elevated levels of alanine aminotransferase and alkaline phosphatase indicated hepatocellular and cholestatic injury. Serum C-reactive protein, a sensitive acute phase marker, was markedly increased, confirming that the infection triggers a vigorous systemic inflammatory response. Taken together, the authors interpret these changes as evidence of multiple organ dysfunction syndrome, a condition more commonly associated with sepsis than with a haemoprotozoal infection.

Abdominal ultrasonography added an imaging dimension that few studies of this scale have incorporated. The most consistent ultrasonographic finding was splenomegaly, often accompanied by splenic parenchymal lesions, reflecting the spleen’s role as both a graveyard for damaged erythrocytes and a site of intense immunological activity. Perhaps more intriguing was the frequent detection of ascites, with the study noting that B. gibsoni infection is commonly associated with high-gradient ascites, defined by a serum-to-ascites albumin gradient above 1.1 g/dL, and ascitic fluid that was transparent to straw-coloured, characteristic of a transudate. In human medicine, the serum-ascites albumin gradient is a cornerstone of workup for abdominal fluid, distinguishing portal hypertension from inflammatory or malignant causes. Its application here suggests a degree of hepatic circulatory disturbance or hypoalbuminaemia-driven fluid shift that clinicians may be systematically under-recognising in babesiosis cases presenting with a distended abdomen.

The heart of the study, however, lies in its oxidant–antioxidant analysis, which elevates it from a descriptive clinicopathological survey to a mechanistic investigation. The researchers measured lipid peroxides, reduced glutathione, and total antioxidant capacity in the infected dogs and compared them against healthy controls. The results were unambiguous. Dogs with B. gibsoni infection had significantly higher lipid peroxide levels, the chemical fingerprints of free radical attack on cell membranes, and significantly lower concentrations of reduced glutathione and total antioxidant capacity, with all differences reaching statistical significance at P less than 0.001. The antioxidant machinery that normally shields red blood cells from oxidative attack had been overwhelmed.

The correlational analysis transforms this observation into an argument about causation. Red blood cell counts showed a strong negative correlation with lipid peroxide levels, with a correlation coefficient of −0.741 at P less than 0.01, meaning that dogs with the most oxidised red cells also had the fewest circulating red cells. Conversely, RBC counts correlated positively with reduced glutathione (r = 0.714) and total antioxidant capacity (r = 0.828), both at P less than 0.01. The interpretation is straightforward: erythrocyte peroxidation is not merely a bystander effect of infection but appears to be a contributing factor to the severity of the anaemia. When parasite-driven oxidative stress overwhelms the red cell’s enzymatic and non-enzymatic defences, lipid peroxidation renders the membrane rigid and recognisable to macrophages, which then clear the damaged cells, compounding the direct destruction caused by the parasite itself.

This mechanism fits neatly into a broader body of evidence on babesial pathogenesis. Earlier experimental work on B. gibsoni demonstrated enhanced erythrophagocytosis of oxidatively damaged infected erythrocytes and increased superoxide generation within parasitised cells, while studies in other piroplasms, including Babesia bigemina in cattle and ovine malignant theileriosis, have documented the same pattern of oxidant surge and antioxidant depletion. The Mizoram study is significant because it extends these mechanistic insights into a naturally infected, clinically diverse population, and because it ties them quantitatively to the parameter that ultimately matters most for survival, the red cell count. The oxidant–antioxidant imbalance, in other words, is not an epiphenomenon; it tracks with the disease’s most life-threatening consequence.

The clinical implications are potentially significant. If oxidative damage accelerates anaemia, then antioxidant therapy becomes a rational adjunct to antiprotozoal drugs such as atovaquone and azithromycin, which suppress but rarely eliminate B. gibsoni. Notably, the same research group has already reported a pilot study in which N-acetylcysteine, a glutathione precursor and well-known mucolytic drug, ameliorated oxidative stress and attenuated anaemia, the acute phase response, and hepatic injury in dogs with clinical B. gibsoni infection. The present study’s correlation data provide the pathophysiological rationale for that intervention, and they suggest that monitoring lipid peroxide and antioxidant indices could serve as a gauge of disease severity and treatment response. For a disease in which chronic carriers are the norm and complete parasitological cure is elusive, any strategy that protects the patient’s remaining red cells carries real value.

Beyond the therapy bench, the study carries a public health and diagnostic message for regions where dogs live alongside heavy tick pressure. The discordance between antibody detection, microscopy, and PCR means that a single negative test should never close the case, and the high prevalence of subclinical, PCR-positive infections in the cohort implies a large silent reservoir that perpetuates transmission. The ultrasound findings, particularly splenomegaly and high-gradient transudative ascites, offer clinicians bedside clues that babesiosis may be complicating patients thought to have primary hepatic or cardiac disease. As B. gibsoni continues its geographic spread, aided by dog movement, bite transmission, and expanding tick habitats, studies of this kind, grounded in real-world clinical populations and linking imaging, biochemistry, and redox biology, provide the comprehensive assessment framework that the field has needed to move from symptom management to mechanism-targeted care of one of the world’s most important canine parasitic diseases.

Subject of Research: Clinicopathological changes, abdominal ultrasound findings, and oxidative stress biomarkers in dogs naturally infected with Babesia gibsoni

Article Title: Comprehensive Assessment of Babesia gibsoni Infection in Dogs: Clinicopathological, Imaging, and Oxidative Stress Perspectives

Article References: Comprehensive Assessment of Babesia gibsoni Infection in Dogs: Clinicopathological, Imaging, and Oxidative Stress Perspectives. (n.d.). https://doi.org/10.1007/s11686-026-01421-y

Image Credits: AI Generated

DOI: 10.1007/s11686-026-01421-y

Keywords: Babesia gibsoni, canine babesiosis, dogs, anaemia, oxidative stress, lipid peroxidation, glutathione, total antioxidant capacity, thrombocytopaenia, ultrasonography, PCR diagnosis, India

Bipolar disorder is one of the most disabling psychiatric conditions worldwide, characterized by alternating episodes of depression and mania. Manic episodes involve elevated or irritable mood, inflated self-esteem, decreased need for sleep, racing thoughts, and impulsive behavior, and they frequently require hospitalization. Clinicians currently assess the severity of mania with rating scales such as the Young Mania Rating Scale, or YMRS, and gauge treatment response by observing how those scores decline over weeks of medication. What they lack is a biological marker, something measurable in the body that could predict, early on, whether a given patient is likely to respond well to standard treatment. The new study addresses precisely this gap.

The theoretical backdrop is the oxidative stress hypothesis of psychiatric illness. Oxidative stress arises when reactive molecules, including hydrogen peroxide and hydroxyl radicals, are produced faster than cellular defense systems can neutralize them. The brain is particularly vulnerable because it consumes a disproportionate share of the body’s oxygen and is rich in lipids that are easily damaged by reactive species. Over the past two decades, researchers have reported abnormalities in antioxidant enzymes and molecules in patients with schizophrenia, depression, and bipolar disorder, but results have often been inconsistent, and few studies have tracked these markers longitudinally through an actual episode of illness and its treatment.

To fill that gap, the team led by Yujun Sun of Kunshan Mental Health Centre and colleagues at Suzhou Guangji Hospital of Soochow University recruited 70 inpatients with manic episodes of bipolar disorder from Wutai Mountain Hospital in Yangzhou, along with 70 age- and sex-matched healthy control subjects. All participants underwent standardized assessment of manic symptoms, and peripheral blood samples were collected to measure serum levels of a suite of oxidative stress markers: catalase, glutathione peroxidase, glutathione, hydrogen peroxide, hydroxyl radical, and total antioxidant capacity. The patients were then followed for four weeks of treatment, with symptom severity and blood markers reassessed at the end of that period.

The baseline comparisons revealed a distinctive oxidative profile in acute mania. Before treatment, patients showed significantly lower levels of catalase, glutathione peroxidase, glutathione, hydrogen peroxide, and hydroxyl radical than healthy controls, together with significantly higher total antioxidant capacity. At first glance, the elevated TAC in acutely manic patients may seem paradoxical, since antioxidant capacity might be expected to fall when defenses are overwhelmed. The authors interpret this pattern as evidence of a compensatory response: as the manic state imposes oxidative burden, the body appears to mobilize total antioxidant defenses upward, even as individual enzymatic components such as catalase and glutathione peroxidase are depleted or consumed.

Four weeks of treatment substantially changed the picture. Symptom severity, as measured by YMRS scores, decreased significantly over the follow-up period, a change the authors report with a t statistic of 46.220 and a P value below 0.001. Alongside clinical improvement, catalase, glutathione peroxidase, glutathione, and hydroxyl radical levels all rose significantly, while total antioxidant capacity fell. Notably, hydrogen peroxide levels, although improved, remained significantly lower in the patient group than in healthy controls even after four weeks of treatment, hinting that some aspects of redox balance recover more slowly than mood symptoms resolve.

The most clinically consequential result concerns prediction. Correlation analysis showed that the reduction in YMRS scores over the four weeks was significantly negatively associated with changes in TAC levels, with a correlation coefficient of −0.254 and a P value below 0.05. In other words, patients whose total antioxidant capacity declined the most tended to show the greatest symptomatic improvement. When the researchers turned to multivariate linear regression, three factors emerged as significant predictors of symptom improvement: the baseline YMRS score, the four-week change in TAC, and sex, all with P values below 0.05. The direction of the TAC finding fits the compensatory interpretation, since a falling TAC would parallel the normalization of an initially overactivated antioxidant response as mania subsides.

Several caveats deserve emphasis. The correlation coefficient, while statistically significant, describes a modest association, meaning that changes in TAC explain only a small fraction of the variability in treatment response. The study involved 70 patients at a single hospital, and the four-week window captures early response rather than long-term outcome. The researchers measured peripheral blood, not brain tissue, so the findings speak to systemic redox biology rather than directly to oxidative processes within neural circuits. Sex emerged as a predictor, but the study was not designed to dissect why, and the authors did not report mediation analyses that would clarify how demographic and biological variables interact. As with any observational follow-up study, association does not establish that antioxidant dynamics drive recovery; they may be a downstream echo of it.

Even with those limitations, the work carries real significance for a field hungry for biomarkers. Psychiatry has few laboratory tests to guide treatment decisions, and patients with bipolar mania often endure a trial-and-error process before an effective regimen is found. A marker that tracks, and potentially anticipates, clinical improvement could eventually help clinicians identify early non-responders, adjust treatment sooner, and monitor recovery objectively. The study also adds nuance to the oxidative stress hypothesis by showing that the relationship between antioxidant measures and illness is dynamic: TAC is elevated in acute mania and falls as symptoms lift, a pattern that static cross-sectional comparisons alone would have obscured.

The research, published open access on 6 October 2026 under DOI 10.1186/s12888-026-08734-2, was supported by funding from the Suzhou Key Technologies Program, the Suzhou Clinical Medical Center for Mood Disorders, and related regional programs. The authors emphasize that oxidative stress profiles in patients experiencing bipolar mania differ significantly from those of healthy individuals, with TAC emerging as a potential predictor of clinical improvement. Larger, multi-center studies with longer follow-up will be needed to confirm whether measuring total antioxidant capacity at the bedside can genuinely forecast who will respond to treatment. But the study marks a step toward a future in which a routine blood draw, read alongside clinical scales, becomes part of the standard assessment of manic illness, turning an abstract biochemical theory into a practical instrument of psychiatric care.

Subject of Research: Oxidative stress markers as predictors of treatment response in bipolar mania

Article Title: Total antioxidant capacity as a predictor of treatment response in bipolar mania: evidence from a 4-week follow-up study

Article References: Sun, Y., Wang, R., Wang, X., Yuan, S., Zhang, X., Zhang, X., & Sun, W. (2026). Total antioxidant capacity as a predictor of treatment response in bipolar mania: evidence from a 4-week follow-up study. BMC Psychiatry. https://doi.org/10.1186/s12888-026-08734-2

Image Credits: AI Generated

DOI: 10.1186/s12888-026-08734-2

Keywords: bipolar disorder, mania, oxidative stress, total antioxidant capacity, biomarkers, treatment response, catalase, glutathione peroxidase, glutathione, hydrogen peroxide, psychiatry, follow-up study

The trial involved 300 one-day-old male Cobb 500 broiler chicks, randomly assigned to five dietary treatments with four replicate pens of 15 birds each. One group received a standard corn–soybean meal control diet, while the others were fed diets supplemented with either 0.75 percent or 1.5 percent Prangos ferulacea powder, or with 750 or 1500 milligrams per kilogram of the plant’s aqueous extract. All diets were formulated to be isocaloric and isonitrogenous, meaning they delivered equivalent levels of energy and protein, so any differences between groups could be attributed to the plant material itself rather than to nutritional imbalances. The birds were monitored over a full 43-day production cycle spanning starter, grower, and finisher phases.

The plant material itself carried considerable biochemical promise. Prangos ferulacea is native to West Asia and is rich in monoterpenes, coumarins, and phenolic compounds — classes of molecules frequently associated with antioxidant, antimicrobial, and smooth-muscle-modulating activity. The researchers harvested mature aerial parts of the plant from the rangelands of Divandareh County in Kurdistan Province, shade-dried them, and milled them into powder. To prepare the aqueous extract, ten kilograms of powder were macerated in thirty liters of distilled water for twenty-four hours, filtered, and concentrated at sixty to seventy degrees Celsius, yielding roughly 10.8 percent of the starting weight as dried extract. Botanical identity was confirmed by a qualified botanist, and a voucher specimen was deposited in the university herbarium, lending the study a level of taxonomic rigor that is not always present in phytogenic feed research.

When it came to the bottom line of broiler production — body weight gain and feed conversion ratio — the results were sobering. Across the entire 43-day period, cumulative body weight gain and feed efficiency did not differ significantly among the five dietary groups. Body weights at eleven, twenty-three, and forty-three days of age were statistically indistinguishable. There was, however, a phase-specific wrinkle: during the finisher period from days twenty-four to forty-three, body weight gain was significantly reduced in the supplemented groups compared with the control, a pattern the authors suggest could relate to effects on feed intake or palatability, though the underlying cause was not directly measured. Feed intake during the grower phase was actually higher in all supplemented groups, yet this did not translate into better growth, and overall feed intake across the trial was unaffected.

Carcass characteristics told a similarly restrained story. Carcass yield and the relative weights of the heart, liver, spleen, pancreas, and bursa of Fabricius were comparable across treatments. One exception stood out: birds fed the lower dose of the powder, 0.75 percent of the diet, showed a significantly heavier gizzard relative to their body weight than both extract-fed groups and the control. The authors speculate that the fibrous, structural nature of the powdered plant material may have stimulated gizzard development, a phenomenon previously reported with coarse or fiber-rich feed components, but they caution that because particle size was not measured, this interpretation remains speculative.

Blood chemistry offered a few more points of interest. Serum triglycerides were significantly lower in birds receiving 0.75 percent powder, while very-low-density lipoprotein levels were unchanged, suggesting the plant does not exert a broad effect on lipid metabolism. Serum cholesterol was significantly lower in birds receiving both forms of supplementation compared with controls, and markers of kidney function — urea, creatinine, and uric acid — were unaffected, indicating the treatments were not harming the birds. Total protein, albumin, and globulin concentrations also remained stable, painting a picture of animals whose basic metabolic health was intact regardless of diet.

The most intriguing and, frankly, most puzzling findings emerged from the antioxidant measurements. Birds receiving the highest dose of aqueous extract, 1500 milligrams per kilogram, showed a significant increase in serum total antioxidant capacity, a measure of the blood’s non-enzymatic antioxidant potential. That might sound like a win for the plant. But the same group also exhibited significantly elevated serum malondialdehyde, a well-established marker of lipid peroxidation and oxidative damage, alongside significantly reduced glutathione peroxidase activity in the liver, one of the body’s key antioxidant enzymes. In fact, all four supplemented groups showed reduced hepatic glutathione peroxidase activity compared with controls, while liver superoxide dismutase showed only a trend toward reduction and red blood cell enzyme activities were unchanged.

This pattern — higher total antioxidant capacity coexisting with more lipid damage and less enzymatic defense — does not add up to an unequivocal antioxidant benefit, and the authors are careful to say so. Rather, they argue, it points to a complex and potentially pro-oxidant response at the highest extract dose, consistent with the dose-dependent or biphasic effects that phytochemicals sometimes display. It also underscores a broader lesson for the field: antioxidant biomarkers should be interpreted collectively rather than in isolation, and a shift in any single indicator does not necessarily signal improved health. Notably, none of the biochemical changes translated into better growth, feed efficiency, or carcass yield, reinforcing a growing consensus that modulating redox biomarkers under low-stress conditions may not produce tangible production benefits.

The study has honest limitations that shape how its findings should be read. With only four replicate pens per treatment and one bird per pen sampled for biochemical analyses, statistical power to detect subtle effects was limited. The experimental diets were formulated on calculated rather than chemically analyzed nutrient values, and the phytochemical characterization relied on spectrophotometric assays of total phenolics, flavonoids, and coumarins rather than chromatographic identification of individual compounds — meaning the differences between powder and extract cannot be tied to specific active constituents or their bioavailability. The authors also note that under the non-stressed conditions of a well-managed research facility, the birds’ endogenous antioxidant systems may already have been operating near optimal levels, leaving little room for a phytogenic additive to demonstrate measurable gains.

Where does this leave Prangos ferulacea on the crowded shelf of candidate antibiotic alternatives? The study contributes to mounting evidence that phytogenic feed additives can shift oxidative status without necessarily improving performance, particularly in animals that are not under environmental or metabolic stress. The authors chart a clear path forward: comprehensive phytochemical profiling of the plant, formal dose–response studies, investigation of molecular mechanisms such as redox-sensitive signaling pathways like Nrf2, and — perhaps most importantly — testing under oxidative-stress challenge models that better mirror the realities of commercial poultry production. Until then, the mountain herb remains a biochemical curiosity with demonstrated biological activity but, at the doses and conditions tested, no proven ticket to faster-growing, healthier chickens. For an industry under pressure to eliminate antibiotics, that distinction between biochemical activity and production benefit is exactly the kind of hard evidence that keeps the search honest.

Subject of Research: Effects of dietary Prangos ferulacea powder and aqueous extract on growth performance, carcass traits, and antioxidant status in broiler chickens

Article Title: Effects of different levels of Prangos ferulacea (L.) Lindl. (Apiaceae) powder and extract on performance, carcass characteristics, and antioxidant status in broiler chickens

Article References: Janfadah, A., Sadeghi, A. A., & Karimi, A. (2026). Effects of different levels of Prangos ferulacea (L.) Lindl. (Apiaceae) powder and extract on performance, carcass characteristics, and antioxidant status in broiler chickens. Discover Animals, 3(1), Article 98. https://doi.org/10.1007/s44338-026-00250-7

Image Credits: AI Generated

DOI: 10.1007/s44338-026-00250-7

Keywords: Prangos ferulacea, broiler chickens, phytogenic feed additives, antioxidant status, total antioxidant capacity, malondialdehyde, glutathione peroxidase, feed conversion ratio, carcass characteristics, poultry nutrition, antibiotic alternatives, oxidative stress