Journal of the American College of Nutrition, Vol. 23, No. 6, 745S-747S (2004)
Published by the American College of Nutrition
Post-Cholecystectomy Syndrome and Magnesium Deficiency
Paul J. Porr, PhD,
János Szántay, PhD and
Margareta Rusu, MD
3rd Medical Clinic, Cluj-Napoca, ROMANIA
Address reprint requests to: Paul J. Porr, PhD, 3rd Medical Clinic, Cluj-Napoca, ROMANIA. E-mail: piporr{at}umfcluj.ro
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ABSTRACT
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Background and Objective: In 20%30% of cholecystectomised patients a biliary syndrome (called Post-Cholecystectomy Syndrome: PCES) reappears after some weeks or months. Its etiology, in certain cases, is an anatomic one: (choledochal lithiasis or stricture, obstructive papillitis, pancreatic duct stenosis), but there are many cases in which all organic causes are excluded.
Methods: The aim of this study was to analyze the correlation between these functional disturbances and magnesium (Mg) deficiency (MD). We analysed 52 patients with PCES and MD, in which organic lesions of the remaining bile ducts were excluded by imaging and endoscopic methods.
Results: MD was confirmed by serum and erythrocytic low Mg levels. 82% of patients were women. Supplemental therapy was provided with Tiomag (Mg gluconate and methionine), vitamin B6 and Ca lactate for 6 weeks or more. In 50 patients, PCES symptomatology disappeared after this treatment. In 14 cases some symptoms reappeared after a few weeks-months, but after repetition of the same therapy they completely disappeared.
Conclusions: Our results demonstrate the dependence of PCES functional manifestations on MD, especially the recurrence of symptoms, which again subsided after Tiomag therapy was reinstituted.
Key words: post-cholecystectomy syndrome, functional biliary symptoms, magnesium deficiency
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INTRODUCTION
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According to published data, 2030% of cholecystectomized patients develop a post-cholecystectomy syndrome (PCES) after weeks or months [1]. The etiopathogenesis of this syndrome is clear in certain cases (choledochal lithiasis, choledochal stricture, cholesterolosis, obstructive papillitis, pancreatic duct stenosis) [2], but there are other instances in which there is no evidence of anatomic lesions [35]. This fact suggests functional disturbances. According to Durlach, functional disturbances of the digestive tract and biliary tree are magnesium (Mg)-dependent [6]. Mg catalyzes over 360 biochemical reactions, among which are synthesis of gastric juice-enzymes and mucins and of digestive polypeptide hormones such as pancreozymin-cholecystokinin, the role of which in the bile-ducts physiology is well known [4,6,7]. Mg is indispensable for synthesis of macroergic compounds and release of the energy stored in these compounds, as well as for the synthesis of hydrogen and electron transporter [822]. This is evidence of the cytoprotective role of this ubiquitous intracellular ion. Disturbance of its homeostasis entails many functional imbalances. Starting from these considerations, in this study we investigated the extent to which Mg deficiency (MD) is involved in PCES etiopathogenesis.
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MATERIAL AND METHODS
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The study included 52 cholecystectomised patients with PCES and MD, in which organic lesions of the remaining bile ducts were excluded by imaging and endoscopic methods. The patients were followed up for a mean period of 12,7 months, using test-sheets on which was recorded: age, gender, levels of serum and erythrocytic Mg, serum calcium (Ca), disturbances of the central and peripheral nervous system, digestive, trophic and functional disturbances. All the patients received substitution therapy with Tiomag (Mg-gluconate + methionine), according to a regimen devised in the 3rd Medical Clinic of Cluj-Napoca. Mg and Ca levels were determined by a photocomplexometric method.
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RESULTS
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Mean age of the study group was 43.6 years (Fig. 1), with 82.69% of the patients being women. Cholecystectomy was performed for the conditions presented in Table 1.
MD, alone, was diagnosed in 60% of the patients; the other 40% of the patients had deficiencies of both Mg and Ca. Normal Ca/Mg balance was restored by standard Tiomag therapy (Table 2).
The mean time necessary to restore equilibrium is presented comparatively with two groups (Fig. 2), one with spasmophilia with digestive (but not biliary) manifestations and another with spasmophilia without digestive manifestations.

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Fig. 2. Duration of therapy (weeks). 1 = PCES group, 2 = spasmophilia with digestive manifestation, 3 = spasmophilia without digestive manifestation.
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In 14 of the patients, who discontinued Tiomag treatment for two months or more, digestive disturbances and MD recurred. After resumption of treatment and MD correction, these disturbances again resolved.
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DISCUSSION
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The Tiomag preparation is composed of Mg-gluconate and methionine [23]. This association is based on the metabolic interaction of Mg with methionine and its metabolites, which supply 80% of the sulfur requirement of the body [24]. In order to establish an adequate therapeutic regimen, it is necessary to know the Mg levels and the Mg/Ca ratio, because in the case of an associated hypocalcemia Ca deficiency must also be corrected. This can be done simultaneously with Mg supplementation, by co-administering a mean dose of 186 mg Ca2+/day. Providing this amount of Ca is very important, for the range in which Ca-Mg antagonism does not manifest is very narrow [25]. The time required for restitution of normal Mg/Ca equilibrium was prolonged in the group studied. The cause of this prolonged time is probably the absence of gall bladder and intermittent bile evacuation into the duodenum, with possibly impaired intestinal Mg absorption.
The results obtained show that functional hepato-biliary and gastrointestinal disturbances in the group studied are Mg-dependent. Tiomag treatment eliminates these disturbances, re-establishing normal function of hepatocytes and bile ducts. Discontinuation of treatment for more than two months leads to recurrence of the above-mentioned symptoms. Resumption of Tiomag therapy makes the symptoms subside again. Systematic Mg administration, in amounts that meet requirements, under clinical and biochemical evaluation, prevents recurrence of PCES manifestations.
These findings demonstrate the cytoprotective role of this therapeutic regimen on the hepatocyte and bile ducts [2629].
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CONCLUSIONS
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- Functional manifestations of PCES subsided after Mg and methionine (Tiomag) supplementation, with vitamins B1 and B6, and Ca lactate.
- Discontinuation of the supplements allowed for recurrence of clinical symptoms, which subsided again after the treatment was resumed.
- The findings demonstrate the dependence of PCES functional manifestations on MD.
- Maintenance of Mg and supportive nutritional supplementation prevents recurrence of PCES symptoms.
Received August 5, 2004.
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