Understanding Gut Health & Pancreatitis

Pancreatitis

Pancreatitis is a common condition in dogs which ranges in severity but always requires veterinary intervention. It is a painful condition, with main symptoms being vomiting and a lack of appetite. Dogs most at risk of pancreatitis are those who are overweight, recovering from surgery or illness, or after eating a high-fat food.

Treatment for pancreatitis varies with its severity, and ranges from pain relief and anti-sickness medication, with a plan to reintroduce small quantities of low-fat food, through to hospitalisation with hydration drip and tube feeding. For some dogs, pancreatitis is a recurring issue requiring ongoing care, although most dogs make a full recovery.

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What is pancreatitis

Pancreatitis is a condition of inflammation and can be acute or chronic. Acute pancreatitis is defined by the short-term inflammation of the pancreas. Chronic pancreatitis, in contrast, is where the pancreas has been irreversibly damaged through long-term inflammation.

Acute pancreatitis is a common condition in dogs, affecting the gastrointestinal system, which can in some cases be severe.

The pancreas plays a key role in digestion. It is responsible for creating the insulin which is needed to regulate levels of glucose in the body, as well as many other enzymes required for digestion.

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Nutritional Treatments for pancreatitis

Traditionally, as an initial response to acute pancreatitis, fasting is undertaken to “rest the gut”. This is in order to prevent the stimulation of pancreatic secretion and to minimise death of the pancreatic cells through these enzyme secretions and inflammation.

Of course, at this stage dogs often have a loss of appetite anyway, from the pain they are experiencing, so food intake is often naturally limited.

Once food is reintroduced, a veterinary low-fat diet is usually recommended. Low-fat diets are a key tool for the usual management of pancreatitis, as in experimentally induced pancreatitis in dogs, high-fat diets were found to induce or exacerbate the condition.

In naturally occurring pancreatitis, the effects of a high-fat diet are less clear, but this is a well-accepted long-term management technique in dogs for both acute and chronic conditions. Whilst adequate protein is essential for tissue repair and recovery, excess dietary protein is also avoided, as products of protein digestion stimulate pancreatic secretions. Carbohydrates have less pancreatic stimulating activity than fat and protein.

Delayed gastric emptying is encouraged for patients, to support a return of appetite. Low-fat diets can support this, as can food volume and particle size.

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The gut-pancreas axis

There is a direct bidirectional link between the pancreas and the gut, called the gut-pancreas axis. This means that the health of the gut and gut microbiome, and the health of the pancreas, directly affect the other.

The severity of acute pancreatitis and inflammation is therefore affected by microbiome health. Equally, pancreatic peptides have an effect in maintaining the microbiome balance and gut integrity.

A disruption to this balance, such as acute pancreatitis, increases the permeability of the gut barrier, allowing bacteria to move into the bloodstream.

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Gut Support

Gut dysbiosis, or the imbalance of gut bacteria, in acute pancreatitis is connected to several pathological mechanisms which promote inflammation, a key characteristic of pancreatitis.

Firstly, permeability of the gut barrier means that bacterial movement from the gut into the bloodstream becomes possible. This contributes to widespread inflammation and infection.

A reduction of beneficial gut bacteria during dysbiosis also means a reduction in their metabolites. This leads to a reduction in intestinal and systemic immune regulation, promoting inflammation.

Specific patterns of dysbiosis are even found to be associated with acute pancreatitis disease severity and systemic inflammation.

Supporting the gut, through probiotics, prebiotics, and several other means, has the intention of altering or resetting the gut microbiome and the metabolites produced. The aim of this is to limit pathogenic bacteria, reduce inflammation, and prevent movement of bacteria into the bloodstream.

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Benefits of prebiotics and probiotics to pancreatitis

Research has recently identified that gut microbiota can have a key impact in the immune and inflammatory responses during acute pancreatitis.

Prebiotics can support re-establishing the balance of the gut during dysbiosis. A study in mice with acute pancreatitis showed that using prebiotics and their metabolites (such as butyrate) reduced mortality and eased pancreatic injury. The method of action here is that the gut barrier is strengthened and therefore the movement of pathogenic bacteria from the gut into the body or bloodstream is reduced.

In the case of acute pancreatitis, probiotics may convey beneficial effects. Like prebiotics, they have the potential to restore the balance of the gut microbiome and strengthen the gut intestinal barrier, reducing the movement of bacteria and therefore the risk of widespread infection.

Studies have shown that probiotics can reduce markers of inflammation, improve gut barrier function, and reduce pancreatic injury.

Another study by Deng et al. studied several interventions of acute necrotizing pancreatitis in dogs and rats. One of their interventions was a bifidobacterium mixture, which was found to reduce gut barrier damage associated with acute necrotizing pancreatitis and aided the prevention of secondary infection.

Another study has shown that the severity of acute pancreatitis is inversely proportional to the quantity of Bifidobacterium. Findings of this study include the protective characteristics of Bifidobacterium on signalling pathways and macrophages, by reducing inflammation and immunopathological damage.

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Summary

Clinical studies on the nutritional management of pancreatitis are limited, but through known pathways and research so far, we can see that the health of the gut and the pancreas are not separate.

Knowing this, we can see how strengthening gut health, and supporting the microbiome to prevent gut dysbiosis, can in turn have the potential to reduce the severity of inflammation and pancreatitis.

Related studies have shown promising results that interventions to support the gut microbiome during pancreatitis have the potential to reduce infection rates, lower inflammation, and prevent mortality when compared to no gut support being provided.

There is far more we have yet to understand regarding this relationship, but with this condition, as with many others, gut health plays its part in maintaining general health and potentially mitigating the effects of pancreatitis.

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References

Nista EC, Parello S, Brigida M, Amadei G, Saviano A, De Lucia SS, Petruzziello C, Migneco A, Ojetti V. Exploring the Role of Gut Microbiota and Probiotics in Acute Pancreatitis: A Comprehensive Review. Int J Mol Sci. 2025 Apr 6;26(7):3433. doi: 10.3390/ijms26073433. PMID: 40244415; PMCID: PMC11989318.

Cridge H, Parker VJ, Kathrani A. Nutritional management of pancreatitis and concurrent disease in dogs and cats. J Am Vet Med Assoc. 2024 Apr 3;262(6):834-840. doi: 10.2460/javma.23.11.0641. PMID: 38569533.

Deng Q, Wu C, Li Z, Xiong D, Liang Y, Lu L, Sun X. [The prevention of infection complicating acute necrotizing pancreatitis: an experimental study]. Zhonghua Wai Ke Za Zhi. 2000 Aug;38(8):625-9. Chinese. PMID: 11832126.

Li H, Xie J, Guo X, Yang G, Cai B, Liu J, Yue M, Tang Y, Wang G, Chen S, Guo J, Qi X, Wang D, Zheng H, Liu W, Yu H, Wang C, Zhu SJ, Guo F. Bifidobacterium spp. and their metabolite lactate protect against acute pancreatitis via inhibition of pancreatic and systemic inflammatory responses. Gut Microbes. 2022 Jan-Dec;14(1):2127456. doi: 10.1080/19490976.2022.2127456. PMID: 36195972; PMCID: PMC9542615.