Dean C. Paz1*
Abigael C. Gunther1Michael C. Higham2
Lynne G. Stephenson1Anthony J. Laporta3K. Dean Gubler4
Rebecca J. Ryznar5- 1Rocky Vista University College of Osteopathic Medicine, Parker, CO, United States
- 2Rocky Vista University College of Osteopathic Medicine, Ivins, UT, United States
- 3Department of Military Medicine, Rocky Vista University College of Osteopathic Medicine, Parker, CO, United States
- 4Department of Military Medicine, Rocky Vista University College of Osteopathic Medicine, Ivins, UT, United States
- 5Department of Biomedical Sciences, Rocky Vista University College of Osteopathic Medicine, Parker, CO, United States
A 51-year-old male with a history of Cacchi-Ricci disease and long-standing infection with various species of Borrelia, Babesia, and Bartonella presented with recurrent symptoms of right-sided flank pain. Numerous renal calculi were identified on imaging. The etiology of the calculi had not been previously elucidated. Symptoms intermittently date back to 2002 when uric acid stones were identified. Subsequent calculi analysis revealed calcium oxalate stones. Despite the commonality of nephrolithiasis in patients with Cacchi-Ricci disease, the extreme number of calculi and recurrent presentation of symptoms persisted despite a plethora of medical evaluations, dietary changes, and hereditary testing. This case raises questions of etiology including possible immune deficiency and whether his uncommon microbial history contributes to recurrent stone formation.
Introduction
Cacchi-Ricci Disease, otherwise known as Medullary Sponge Kidney (MSK), is a congenital abnormality of the terminal collecting ducts commonly associated with recurrent nephrolithiasis (Gambaro et al., 2006). Nephrolithiasis is the production of urinary calculi within the kidney and often presents in symptomatic patients with renal colic and hematuria but may be asymptomatic in others depending on calculi size (Li et al., 2019). Commonly, renal calculi consist of calcium oxalate stones that arise due to elevated calcium or high oxalate concentrations in the urine. Other types of renal calculi include struvite, uric acid, calcium-phosphate, and cystine stones (Ratkalkar and Kleinman, 2011; Lieske et al., 2014). Risk factors for stone formation include dehydration, diets high in animal protein, electrolyte, vitamin, and mineral imbalances, medications, and obesity (Taylor et al., 2004; Atan et al., 2005; Taylor et al., 2005; Taylor et al., 2009).
Infections with Borrelia, Babesia, and Bartonella species have been linked to tick bites (Eskow et al., 2001; Vannier et al., 2015). Borrelia and Babesia infections are transmitted by the Ixodes scapularis tick while Bartonella infection is associated with bites from the Ixodes ricinus tick (Eskow et al., 2001; Steere et al., 2003). While not commonly thought of as a disease of the kidney, Lyme Disease, caused by Borrelia burgdorferi, has been linked to renal disease and stone formation (Ciută et al., 2012). In addition, concomitant Bartonella and Babesia infections have been hypothesized to result in increased disease severity (Knapp and Rice, 2015).
This case report explores a possible relationship between a microbial history with Borrelia, Babesia, and Bartonella species and supernumerary recurrent kidney stone formation in an individual with Cacchi-Ricci Disease. Evidence of the association between microbial pathogens and kidney stone formation has been inconclusive in previous studies. The abundance of stones seen in the patient presented in this report is confounding. Further investigation regarding the possible association is warranted.
Case
A 51-year-old male with a history of Cacchi-Ricci disease and long-standing B. Burgdorferi Osp A (Outer Surface Lipoprotein A), B Burgdorferi Osp B-NPS (Outer Surface Lipoprotein B), Babesia microti, Babesia Duncani, Bartonella henselae-NPS, Bartonella quintana-NPS, Borrelia miyamotoi-NPS, Borrelia recurrentis sought medical care for recurrent symptoms of right-sided flank pain. Past medical history includes a tick bite at 8 years old while camping in Bear Lake, Utah. He was prescribed Tetracyclines for four years to treat acne while in high school.
On presentation, he brought with him a renal calculi that he reportedly passed earlier in the year, ultimately hoping to understand the underlying etiology of the symptoms and history of nephrolithiasis. His history of renal lithiasis dates back to November 2002; the patient was 30-years-old at that time. Analysis of his recurrent stones in 2003 revealed uric acid stones; laboratory evaluation revealed an elevated serum uric acid level, 874 mg/dL. Allopurinol was prescribed with uric acid levels decreasing dramatically with an associated decrease in renal stone passage. Due to recurrent flank pain, radiological imaging was performed, which revealed generalized enlargement of the right kidney, blunted calyces and splenomegaly. A presumptive diagnosis was made of a possible variation of medullary sponge kidney. Symptoms persisted and increased in severity beginning again in 2017, despite medication use and dietary changes. The patient passed 57 stones in 2021 and 49 stones in 2022, as shown in Figure 1. On presentation to our urgent care, analysis of the stone he presented consisted of a Calcium Oxalate brown and tan stone that weighed 19 mg. Laboratory evaluation revealed deficient Vitamin D level of 20 ng/mL (nl range 30-100 ng/mL), and an elevated parathyroid hormone level of 92.3 pg/mL (nl range 10.8-79.4 pg/mL), Figures 2, 3. These levels are ultimately consistent with the etiology of calcium oxalate crystal formation. Meanwhile, previous studies have revealed that Lyme disease is correlated with a Vitamin D deficiency (Donta, 2012). This may explain the reasoning behind his lab values, but further workup is required to make this conclusion. CT of the abdomen and pelvis revealed extensive nephrolithiasis in the right kidney, with sparse calculi in the left kidney, as seen in Figure 4.
Figure 1 Renal calculi throughout the years. Microscopic image showcasing the assortment of renal calculi collected over several years. The top 2 containers are prior to 2021. The bottom left container is from 2021, and the bottom right corner is from 2022. The image highlights a multitude of supernumerary renal calculi, elucidating their recurrent formation. The correlation between these calculi and tick-borne infections is explored in this case report, presenting a potential link worthy of further investigation.
Figure 2 Line graph showing an increase in Vitamin D levels following supplementation. Graphical representation illustrating the patient’s dynamic Vitamin D levels over time. The patient initially had a level of 20ng/mL (normal range between 20 to 40ng/mL) on October 28th 2022, as indicated by the green arrow. The graph demonstrates a significant rise in Vitamin D levels following supplementation. From an initial deficient state, the patient’s Vitamin D levels increased to 33 ng/mL, as seen by the orange arrow, showcasing the impact of Vitamin D supplementation. This observation is pertinent to the investigation into the relationship between supernumerary recurrent renal calculi formation and potential associations with tick-borne infections, offering insights into the potential role of Vitamin D in this context.
Figure 3 Line graph showing a decrease in PTH following Vitamin D supplementation. Bar graph showing the impact of Vitamin D supplementation on Parathyroid Hormone (PTH) levels in our patient. The graph displays a noticeable decrease from an initial PTH level of 92 pg/mL, as seen by the grey arrow, to 83 pg/mL, as shown by the black arrow, following Vitamin D supplementation. This decline in PTH levels suggests a regulatory effect of Vitamin D on parathyroid function; Vitamin D plays a pivotal role in calcium homeostasis. When Vitamin D levels are low, there is a resultant rise in PTH secretion from the parathyroid glands, aiming to increase calcium absorption. Consequently, when Vitamin D levels are high, PTH levels decrease. The normal range of PTH levels range from 10 to 80 pg/mL, as shown by the green dashed and green solid lines, respectively.
Figure 4 Axial CT scan of the Abdomen and Pelvis revealing numerous renal calculi. Axial CT scan images of the Abdomen and Pelvis depicting the presence of numerous renal calculi primarily localized in the right kidney, as seen by the red arrow. Additionally, visualization reveals the presence of renal calculi in the left kidney, albeit to a lesser extent, indicated by the blue arrow.
On presentation, the patient reported being compliant with naturopathic medical management of his Vitamin D levels that consisted of Vitamin D supplements, mimosa pudica, and chanca Piedra. Despite changes in lifestyle, medication management, and herbal supplements, he passed two stones during the first 6 weeks of 2023. Herbal supplements included Mimosa Pudica, and Chanca Piedra, which were prescribed by a naturopath the patient has been seeing. At this point in time, the patient’s microbial conditions are being medically managed by an external primary care provider upon major dermatological flare-ups which include intermittent short-lasting pruritic rashes on his cubital fossa, forearm, and wrist.
Discussion
Urolithiasis has been increasing in prevalence, and is a common source of renal injury in the aging population (Lang et al., 2022). The diagnosis of renal calculi is often clinical but can be confirmed with computerized imaging. As mentioned previously, there are different types of kidney stones, with calcium oxalate being the most common (Khan et al., 2016). The mechanism of stone formation is attributed to supersaturation in the urine but can also be due to dietary measures (Ratkalkar and Kleinman, 2011). Additional factors such as lifestyle, dietary factors, different kidney diseases, and metabolic syndromes also pose an elevated risk (Chung et al., 2013).
Medullary sponge kidney, originally known as Lenarduzzi-Cacchi-Ricci disease, is a congenital pathology characterized by the malformation of the pericalyceal terminal collecting ducts. Collecting duct dilatation is associated with formation of both small and large medullary “cysts” that rarely involve the cortex. The exact pathogenesis, and association with nephrocalcinosis and nephrolithiasis, is not fully understood and controversial (Rao et al., 1977; Ginalski et al., 1990; Yagisawa et al., 2001). One purported mechanism is believed to be a variant in the gene encoding glial cell-derived neurotrophic factor (GDNF), which is found to be down-regulated in MSK cells which is thought to promote calcium phosphate deposition. This combined with urine stagnation in dilated collecting tubules could precipitate stone formation (Mezzabotta et al., 2015). Additionally, metabolic abnormalities like idiopathic hypercalciuria prior to onset of hyperparathyroidism have been cited (Gambaro et al., 2006; Evan et al., 2015). Medullary sponge kidney patients are often asymptomatic, can present with recurrent urinary tract infections with or without nephrolithiasis. The diagnosis is usually made during investigation for hematuria or recurrent stone formations in conjunction with normal renal values (Garfield and Leslie, 2022). In this case, we present a patient with an abundance of renal calculi and historical vector-borne bacterial disease, underscoring the need to consider microbial infections as a possible source of urolithiasis.
Lyme disease is known as “the great masquerader” due to diffuse and vague symptomatology. The Ixodes scapularis tick is the vector responsible for Lyme disease (B. burgdorferii) and babesiosis (B. microti). Although the Ixodes tick transmits both diseases, coinfections are believed to be relatively rare, 2% (Steere et al., 2003). It is suggested that co-infection may result in a more prolonged and severe course of illness. Symptoms of chronic disease typically include fatigue, arthralgias/myalgias, and cognitive dysfunction. The role and pathogenesis of Lyme disease in nephrolithiasis has not been extensively detailed with only a few case reports documenting this unique connection (Ciută et al., 2012; Reeze and Maru, 2016). A possible explanation includes the invasive capabilities of the organism. Distinct dissemination features by B. burgdorferi include interactions between the p66 outer membrane protein and host target cell integrins that play a role in transendothelial migration. The kidney has extensive post-capillary venules that express β1 integrins, and although this may be a less common target of the p66 outer membrane protein, binding could potentiate a mechanism for hematogenous dissemination within host tissues (Hyde, 2017; Mohamed et al., 2020).
Infection secondary to Babesia microti is the primary source of babesiosis in humans in North America. Babesiosis is characterized by a gradual onset of fever, fatigue, and malaise accompanied by chills, sweats, headaches, and myalgia. It is transmitted by the Ixodes scapularis tick which is commonly found on mice and other small rodents (Smith et al., 2020; Waked and Krause, 2022). In humans, acute tubular injury has been reported with babesiosis secondary to volume depletion and heme pigment toxicity following hemolysis caused by the infection (Luciano et al., 2013). While there is not much more research on the impact of babesiosis on human kidneys, work has been done to identify its impact on animal models. In rats, B. microti has shown a chemotactic tendency to adhere to the epithelium of renal tubules. Involvement within the epithelial cells showed a decreased ability to fight against oxidative stress, an increase in free radicals, and resultant tissue damage and necrosis (Albertyńska et al., 2021). Further studies in mice showed B. microti infection leading to renal abnormalities including abnormal serum creatinine, uric acid, and bilirubin levels (Li et al., 2022). Considering that rodents are a natural reservoir for B. microti, further research is necessary to see how these results would translate to human kidneys, including the impact on nephrolithiasis formation.
Additionally, Bartonella henselae, commonly manifesting as Cat Scratch disease, can also cause a wide spectrum of clinical signs in association with persistent infection. There is a substantial reservoir in both domestic and wild animals that can result in accidental human infection via the Ixodes ricinus tick (Eskow et al., 2001). Although classically associated with cats via fleas, the knowledge of vector transmission for Bartonella remains to be delineated (Chomel et al., 1996). For protracted courses of Lyme’s disease refractory to initial treatment, it has been suggested that a second pathogen, such as Bartonella, might be the cause (Berghoff, 2012). The compounding effects of these bacteria on the kidney is only hypothesized at this point, however, one proposed mechanism of pathology is the formation of reactive oxygen species (Eskow et al., 2001; Khan, 2004). The normal urinary environment is not conducive to kidney stone crystallization. Reactive oxygen species that are produced during renal cell injury stimulate the production of products like osteopontin, prostaglandin E2, and heparan sulfate proteoglycan, which are known modulators of inflammation and production of extracellular matrix. Renal epithelial cells that are exposed to inflammatory mediators undergo a cycle of apoptosis and necrosis that lead to further crystallization and stone formation (Khan, 2013).
Although previous documentation of infection associated renal calculi have been inconclusive, the etiology behind the numerous stones our patient has experienced remains to be determined. His unique history of infection with multiple intracellular pathogens, however, cannot be excluded as contributory, and a history of vector borne infections should be considered in the clinical evaluation of urolithiasis.
Conclusion
This case highlights the importance of a comprehensive approach towards evaluating and managing recurrent nephrolithiasis in patients with an extensive complex microbial history, particularly Lyme disease. It is crucial to consider both infectious and metabolic factors, as well as their potential interactions, when evaluating such patients. Continuous monitoring and management of chronic infections, combined with appropriate evaluation and treatment of metabolic abnormalities, are key to preventing further stone formation and managing symptoms. Further research to determine the potential correlation between the patient’s infectious medical history and recurrent nephrolithiasis is warranted. By considering both infectious and metabolic factors, healthcare providers can provide optimal care, prevent further stone formation, and improve patient outcomes.
Data availability statement
The original contributions presented in the study are included in the article/supplementary material. Further inquiries can be directed to the corresponding author.
Ethics statement
Written informed consent was obtained from the individual(s) for the publication of any potentially identifiable images or data included in this article. Written informed consent was obtained from the patient for the publication of this case report.
Author contributions
DP, AG, and MH were responsible for conceptualization, data curation, formal analysis, investigation, methodology, resources, visualization of the work, writing of the original draft and reviewing. DP was also responsible for project administration and supervision of the project. DP prepared Figures 1–4, and KG reviewed them prior to submission. KG, RR, and AL were responsible for reviewing and editing the work, along with oversight of the execution of the project. LS was responsible for resource acquisition. All authors contributed to the article and approved the submitted version.
Conflict of interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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Keywords: Cacchi-Ricci disease, medullary sponge kidney, nephrolithiasis, renal calculi, tick-borne infections, Bartonella, Babesia, Borrelia
Citation: Paz DC, Gunther AC, Higham MC, Stephenson LG, Laporta AJ, Gubler KD and Ryznar RJ (2024) Exploring the relationship of supernumerary recurrent renal calculi formation and tick-borne infections: a case report. Front. Cell. Infect. Microbiol. 14:1194307. doi: 10.3389/fcimb.2024.1194307
Received: 27 March 2023; Accepted: 10 January 2024;
Published: 26 January 2024.
Edited by:
Giuseppe Celenza, University of L’Aquila, ItalyReviewed by:
Anbarasu Kumarasamy, Bharathidasan University, IndiaEdward Breitschwerdt, North Carolina State University, United States
Copyright © 2024 Paz, Gunther, Higham, Stephenson, Laporta, Gubler and Ryznar. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Dean C. Paz, Dean.paz@rvu.edu