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ORIGINAL ARTICLE
Year : 2019  |  Volume : 9  |  Issue : 3  |  Page : 148-153  

A prospective multicentric postmarketing observational study to characterize the patient population with reduced gastrointestinal motility among indian diabetic patients receiving itopride: The progress study


1 Rai Specialty Center H-6, Jaipur, Rajasthan, India
2 Centre for Digestive and Liver Diseases, Bhopal, Madhya Pradesh, India
3 Only Research, Siddha Point, Guwahati, Assam, India
4 F.S.Endocrine, Hyderabad, Telangana, India
5 Nobel Gastro Hospital, Ahmedabad, Gujarat, India
6 Gastrocare, Arera Colony, Bhopal, Madhya Pradesh, India

Date of Submission22-Oct-2018
Date of Acceptance07-Jun-2019
Date of Web Publication10-Jul-2019

Correspondence Address:
Dr. Ramesh Roop Rai
Rai Specialty Center H-6, Jan Path, Kishan Nagar, Shyam Nagar, Jaipur - 302 019, Rajasthan
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijabmr.IJABMR_351_18

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   Abstract 


Aims: This study was intended to assess the clinical profile of Indian diabetic patients with reduced gastrointestinal (GI) motility and to understand the role of itopride in addressing reduced GI motility (gastroparesis) symptoms and maintaining glycemic control. Material and Methods: Patients with established reduced GI motility (scintigraphy), with varying degree of GI symptoms, receiving itopride 150 mg as per physicians' discretion were enrolled. Clinical profile, changes in symptom severity, glycemic indices, tolerability, and quality of life (QoL) after 8-week therapy (Patient assessment of upper GI disorders-QoL [PAGI-QoL]) were assessed. Results: Mean ± standard deviation age of enrolled population (n = 41) was 51.8 ± 12.39 years. Average duration of gastroparesis since underlying etiology was 67.7 ± 59.76 months. Common symptoms reported at baseline were bloating (68.3%), postprandial fullness (61.0%), nausea (51.2%), early satiety (41.5%), heartburn (39.0%), and vomiting (9.8%). Itopride therapy resulted in significant improvement in all symptoms (P < 0.001), which correlated with improved QoL (PAGI-QoL score reduction: 13.8 ± 11.48; P < 0.0001). Moreover, significant improvement in glycemic indicators was also evident (mean change from baseline hemoglobinA1c –0.5 ± 1.18; fasting plasma glucose –15.3 ± 43.61; postprandial plasma glucose –24.6 ± 57.20). Conclusions: Itopride showed effectiveness in addressing symptoms of reduced GI motility in diabetics, with improved QoL. Significant improvement in glycemic indices was also evident posttreatment with itopride. This study sheds light on the role of prokinetics, not only for symptom relief but also for improving glycemic control in diabetic patients with reduced GI motility, thus providing a holistic approach for the management of these patients.

Keywords: Diabetes mellitus, gastroparesis, glycemic indices, hemoglobin A1c, itopride


How to cite this article:
Rai RR, Choubal CC, Agarwal M, Khaliq AM, Farishta FJ, Harwani YP, Kumar SY. A prospective multicentric postmarketing observational study to characterize the patient population with reduced gastrointestinal motility among indian diabetic patients receiving itopride: The progress study. Int J App Basic Med Res 2019;9:148-53

How to cite this URL:
Rai RR, Choubal CC, Agarwal M, Khaliq AM, Farishta FJ, Harwani YP, Kumar SY. A prospective multicentric postmarketing observational study to characterize the patient population with reduced gastrointestinal motility among indian diabetic patients receiving itopride: The progress study. Int J App Basic Med Res [serial online] 2019 [cited 2019 Sep 22];9:148-53. Available from: http://www.ijabmr.org/text.asp?2019/9/3/148/262480




   Introduction Top


India is recognized as the “Diabetes Capital of the World” with about 72.9 million diabetic patients, which is projected to reach 134.3 million by 2045.[1] Reduced gastrointestinal (GI) motility or (diabetic) gastroparesis is one of the common secondary complications associated with long-standing diabetes mellitus, largely because of autonomic neuropathy, which may result in postprandial glycemic surge.[2] It affects nearly 20%–50% of patients with type-1 and type-2 diabetes.[3]

Gastric emptying plays an important role in blood glucose homeostasis. The rate of gastric emptying is a predeterminant of the initial postprandial glycemic response, and delayed gastric emptying can cause postprandial hypoglycemia in insulin-treated individuals. Diminished incretin response due to delayed gastric emptying may contribute to impaired insulin secretion in patient with diabetes, resulting in poor glycemic control. Moreover, the absorption kinetics of drugs could also be influenced by changes in gastric emptying. Poor glycemic control in turn can exacerbate neuropathy, thereby reducing GI motility.[2],[4],[5],[6] The American College of Gastroenterology and American Gastroenterological Association guidelines recommend the use of prokinetics for their ability to intervene or arrest this vicious cycle thereby improving glycemic control.[4],[5],[6] The prokinetic agent – itopride works by both, antagonizing dopamine D2 receptors and inhibiting the activity of acetylcholinesterase. It not only stimulates the release of acetylcholine but also inhibits its degradation thereby promoting GI motility. Thus, itopride exhibits a dual effect on the motility of the GI tract and is not reported to cause extrapyramidal side effects,[7],[8],[9] possibly because of its high polarity which may largely prevent it from crossing the blood–brain barrier.[7]

Clinical studies have shown the safety and efficacy of itopride for conditions associated with reduced GI motility in diabetes.[8],[9] A double-blind randomized study reported acceleration of solid and liquid gastric emptying in itopride group compared to the placebo group in patients with diabetic gastroparesis.[10] Similarly, few other studies exhibited significant decrease in the time of gastric emptying[7] and postprandial glucose level after itopride therapy.[2] Moreover, in combination with pantoprazole, a significant improvement in the severity and frequency of all symptoms was reported in diabetic gastroparesis patients.[11]

Nevertheless, there is a paucity of data on the use of itopride in Indian diabetic patients characterized with reduced GI motility. Hence, this study was intended to assess the clinical profile of Indian diabetic patients with reduced GI motility and to understand the role of itopride in addressing GI symptoms and maintaining glycemic control. The quality of life (QoL) of these patients and tolerability profile of itopride was also assessed.


   Subjects And Methods Top


Study design and patient population

This multicentric, prospective study was conducted between September 2017 and April 2018 across six centers in India (Jaipur, Bhopal [2 centers], Guwahati, Hyderabad, and Ahmedabad). Diabetic patients (males and females) between 18 and 65 years of age, diagnosed with reduced GI motility through gastric scintigraphy conducted within 6 months of enrolment, who presented with varying degrees of symptoms of reduced GI motility for at least 12 weeks (not necessarily continuous) and prescribed itopride 150 mg (Ganaton® OD, Abbott India Ltd.) were enrolled in the study. Patients with obstructed gastric outlet, small bowel, or colon, GI hemorrhage or perforation; severe cardiac, hepatic, neurological, or renal diseases; or any other condition, which in the opinion of the clinician/investigator could interfere significantly with the treatment and assessment process were excluded from the study. Pregnant or lactating women and patients already undergoing treatment with itopride or any other prokinetic agents were also excluded. Contraindications to itopride treatment as per the local approved label (including known hypersensitivity); participation in any other interventional trial within the last 30 days of enrollment; and unwillingness to adhere to the protocol, or comply with 8-week follow-up visits and provide written authorization were other exclusion criteria.

The study protocol was approved by Institutional Ethics Committees and conducted in accordance with the principles of Declaration of Helsinki, International Council on Harmonization Good Clinical Practice (GCP) guidelines, and Indian regulatory guidelines (Indian Council of Medical Research and Indian GCP guidelines). All patients provided written consent in the patient authorization form to participate in the study.

Study endpoints

The primary study endpoints were to evaluate the demographic characteristics of Indian diabetic patients with reduced GI motility and to assess the proportion of physicians prescribing itopride due to various reasons. The secondary endpoints included change in severity and frequency of clinical signs and symptoms and change in total Patient assessment of upper GI disorders-QoL (PAGI-QoL) score from baseline to week 8. In addition, change in glycemic indicators (hemoglobin [Hb] A1c, fasting plasma glucose 148, postprandial plasma glucose [PPG]), and safety/tolerability from baseline to week 8 after itopride therapy were also assessed.

Study assessment tool – patient assessment of upper gastrointestinal disorders-quality of life and symptoms severity score

Disease (reduced GI motility)-specific QoL was assessed by the PAGI-QoL survey with scoring on a 6-point Likert scale. The questionnaire was administered by a physician or designee. It was used to assess the patients' health-related QoL within the last 2 weeks.[12] It consisted of 30 items assessing five domains: daily activities, clothing, diet and food habits, relationship, and psychological well-being and distress.[13],[14] The PAGI-QoL provides numerical values for QoL in patients with disordered gut motility.[15] Each symptom was scored based on its severity; mild = 1, moderate = 2, severe = 3, and extremely severe = 4, and the mean scores at each visit were compared to understand the effect of itopride therapy from baseline to week 8.

Statistical methods

No formal sample size calculation was done for this study. Continuous variables were summarized using descriptive statistics n (number of patients), mean and standard deviation (SD). Summary of categorical data was evaluated through numbers and percentages. PAGI-QoL questionnaire was assessed by 2 sample t-test. The statistical analysis was done using Statistical Analysis System® version 9.4 software.


   Results Top


Demographic and baseline characteristics

Forty-one patients met the inclusion criteria of this study, which included 19 males (46.3%) and 22 (53.7%) females [Table 1]. The mean ± SD (Min: Max) age, weight, height, and body mass index (BMI) of all study patients was 51.8 ± 12.39 years (24.0:65.0), 69.9 ± 8.62 kg (48.0:87.4), 162.7 ± 8.10 cm (143.2:176.0), and 26.5 ± 3.77 kg/m2 (19.2:42.6), respectively. Based on the Kuppuswamy socioeconomic classification, over 60% (25/41) patients were from upper middle class, while approximately 30% (12/41) were from lower middle class.
Table 1: Summary of patient demographics and baseline characteristics

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The mean ± SD (minimum:maximum) duration of diabetes mellitus of all enrolled patients was 81.4 ± 65.38 months (4.0:262.0). Average duration of gastroparesis development was 67.7 ± 59.76 months (3.0:244.0). All patients were diagnosed with confirmed gastroparesis.

Change in symptoms severity and different rationale of prescribing itopride

All enrolled patients presented one or more of the classical symptoms of reduced GI motility at baseline visit [Table 2]. Most patients (28 [68.3%]) reported bloating at baseline of either moderate or severe nature. After 4 weeks (visit 2) and 8 weeks (visit 3) of itopride treatment, the number of patients presenting with symptoms was reduced, with none having severe symptoms. Twenty-five (61.0%) patients presented with postprandial fullness of moderate (13 [52.0%]) and severe (11 [44.0%]) nature at baseline. Notably at visit 2, patients presenting with severe symptoms were only 3 (17.6%), which reduced to none by visit 3. Fourteen (66.7%) of 21 (51.2%) patients who presented with nausea at baseline had severe symptoms. Remarkably, 50% patients completely recovered after 4 weeks of itopride treatment, while after 8 weeks of treatment, none presented with severe nausea any more.
Table 2: Summary of signs and symptoms of patients with reduced gastrointestinal motility

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Similar observations were noted in patients presenting other symptoms such as early satiety, heartburn, and vomiting at baseline with a significant reduction in the number of patients and symptom severity after 4 and 8 weeks of itopride treatment. As a result, significant (P < 0.001) improvement in severity or complete recovery of the symptom(s) was recorded [Table 3].
Table 3: Summary of symptoms by severity based on score (n=41)

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Different rationale for prescribing itopride by the physicians was studied. Most physicians prescribed itopride for its efficacy (19 [46.4%]) while others prescribed it for its rapid symptomatic relief (12 [29.2%]) or as a standard of care (10 [24.4%]).

Patient assessment of upper gastrointestinal disorders-quality of life score

The mean total score reduction at visit 8 from baseline was – 13.8 ± 11.48, suggesting a significant (P < 0.0001) improvement in patient's QoL [Figure 1].
Figure 1: Patient assessment of upper gastrointestinal disorders-quality of life score (n = 41), patient assessment of upper gastrointestinal disorders-quality of life instrument consisted of 30 items, each with response options based on a 6-point Likert scale, *P < 0.0001 compared to baseline

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Glycemic indicators

We observed a significant improvement in each of the glycemic indicators (mean change from baseline HbA1c – 0.5 ± 1.18 (P < 0.001); fasting glucose – 15.3 ± 43.61; and postprandial glucose – 24.6 ± 57.20; P < 0.001) after 8 weeks of itopride treatment [Table 4] and [Figure 2]a, [Figure 2]b.
Table 4: Summary of glycemic indicators (n=41)

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Figure 2: (a) Change in hemoglobin A1c after itopride treatment, *P < 0.05, **P < 0.001 compared to baseline. (b) Change in fasting and postprandial glucose levels after itopride treatment, *P = 0.004 compared to baseline

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Safety

No adverse drug reactions were reported during the study.


   Discussion Top


This study enrolled 41 patients from 6 centres across India based on the study inclusion criteria. Mean ± SD age of the enrolled population was 51.8 ± 12.39 years which was in accordance with a study conducted in Pakistan that reported the mean age of patients with reduced GI motility as 50 years, while another study of US reported the mean age as 42.4 years.[2],[16]

Reduced GI motility (gastroparesis) in diabetics is reported to be common in females,[17] which was observed in our study as well. The mean ± SD weight, height, and BMI of overall patients were 69.9 ± 8.62 kg, 162.7 ± 8.10 cm, and 26.5 ± 3.77 kg/m2, respectively. Our findings are in line with other studies which have reported that most diabetic patients with reduced GI motility were obese with higher BMI.[17],[18],[19]

In our study, average duration of gastroparesis development since the underlying etiology was found to be 67.7 ± 59.76 months. Kashyap and Farrugia reported disease duration of diabetes as a risk factor for developing gastroparesis.[6] Some patients may develop gastroparesis within few years of onset of diabetes, while others may take longer time depending on their glycemic control.[4]

The classical symptoms of reduced GI motility in diabetics observed at baseline were bloating, postprandial fullness, nausea, early satiety, heartburn, vomiting, and anorexia, which is in agreement with the published literature.[3] Moreover, our study demonstrated a significant improvement in symptoms of reduced GI motility after 4 and 8 weeks of itopride treatment, reiterating the findings from earlier studies.[7],[11]

In addition, this is the first study to assess different rationales for prescribing itopride by Indian clinicians. Efficacy of itopride was the key reason for using the same which is well established by studies performed by Venkatesh and Kulkarni[11] and Budennaya et al.[7] These observations revalidate the efficacy of itopride as a prokinetic agent.

Reduced GI motility in diabetes is known to affect patients' QoL significantly due to the primary disease and associated symptoms and complications. The PAGI-QoL questionnaire was used to assess the effect of itopride treatment on patients' QoL.[12] Our study demonstrated that there was a significant (P < 0.0001) improvement in patients' QoL after 8 weeks itopride therapy, primarily due to its ability to induce rapid symptomatic relief.[20]

Our study demonstrated a positive role of itopride in improving glycemic indices (HbA1c, fasting, and postprandial glucose level), thus offering profound benefits in diabetes management. A study by Abid Shah et al.[2] demonstrated that addition of itopride before meals facilitates food delivery to the intestine, increases incretin secretion, and thus improves the glycemic parameters. Thus, our findings further confirm the role of itopride in improving glycemic control in diabetic patients, besides offering symptom relief.

Itopride was found to be well tolerated, with no adverse drug reactions reported during the study. This observation support the positive benefit-risk profile of itopride as also highlighted in published literature.[20]

Our study has several strengths. First, this was a first of its kind Pan-India study that demonstrated itopride mediated symptomatic relief in diabetic patients with reduced GI motility. Second, patients of varying age and socioeconomic status were evaluated. This study has used standard and validated methods for diagnosis of delayed gastric emptying, giving credibility to results obtained. Further, all the questionnaires used in the study were administered to the patients by a physician or a designee, which enabled to capture information with greater accuracy and confidentiality. However, this study also has some limitations. First, the study was conducted for 8 weeks, and hence, long-term outcome data are lacking. Second, this was an observational study; hence, no control group was present for comparative analysis.


   Conclusions Top


Itopride showed effectiveness in addressing symptoms of reduced GI motility in diabetics, with improved QoL. Significant improvement in the glycemic indices such as HbA1c, FPG, and PPG was also evident posttreatment, which could be attributed to the positive effects of itopride in facilitating gastric emptying, thus restoring altered kinetics of food and drug absorption. This study sheds light on the role of prokinetics, not only for symptomatic relief but also for improving glycemic control in diabetic patients with reduced GI motility, thus providing a holistic approach for the management of these patients.

Financial support and sponsorship

This study was funded by Abbott India Ltd.

Conflicts of interest

Dr Rooprai, Dr Choubal, Dr Agarwal, Dr Khaliq, Dr Farishta, Dr Harwani, and Dr Kumar received research funding from Abbott India Ltd.



 
   References Top

1.
International Diabetes Federation. IDF Diabetes Atlas. International Diabetes Federation; 2017. p. 147.  Back to cited text no. 1
    
2.
Abid Shah M, Suleman S, Saadatullah. Role of itopride in minimizing post prandial glucose excursion in type 2 diabetic patients. J Med Sci 2014;22:73-5.  Back to cited text no. 2
    
3.
Ajumobi AB, Griffin RA. Diabetic Gastroparesis: Evaluation and Management. Hospital Physician 2008;27-35.  Back to cited text no. 3
    
4.
Camilleri M, Parkman HP, Shafi MA, Abell TL, Gerson L; American College of Gastroenterology. Clinical guideline: Management of gastroparesis. Am J Gastroenterol 2013;108:18-37.  Back to cited text no. 4
    
5.
Parkman HP, Hasler WL, Fisher RS, American Gastroenterological Association. American gastroenterological association medical position statement: Diagnosis and treatment of gastroparesis. Gastroenterology 2004;127:1589-91.  Back to cited text no. 5
    
6.
Kashyap P, Farrugia G. Diabetic gastroparesis: What we have learned and had to unlearn in the past 5 years. Gut 2010;59:1716-26.  Back to cited text no. 6
    
7.
Budennaya IY, Glinkina IV, Zilov AV, Makhov VM, Melnichenko GA. Itopride hydrochloride efficacy in the management of delayed gastric emptying in type 1 diabetis mellitus patients in the presence of autonomic neuropathy. Diabetes Mellit 2014;17:70-6.  Back to cited text no. 7
    
8.
Gurlich R, Frasko R, Maruna P, Chachkhiani I. Randomized clinical trial of itopride for the treatment of postoperative ileus after laparoscopic cholecystectomy. Chir Gastroenterol Interdiscip 2004;20:61-5.  Back to cited text no. 8
    
9.
Talley NJ, Tack J, Ptak T, Gupta R, Giguère M. Itopride in functional dyspepsia: Results of two phase III multicentre, randomised, double-blind, placebo-controlled trials. Gut 2008;57:740-6.  Back to cited text no. 9
    
10.
Stevens JE, Russo A, Maddox AF, Rayner CK, Phillips L, Talley NJ, et al. Effect of itopride on gastric emptying in longstanding diabetes mellitus. Neurogastroenterol Motil 2008;20:456-63.  Back to cited text no. 10
    
11.
Venkatesh V, Kulkarni KP. Itopride and pantoprazole outcomes in diabetic gastroparesis trial (IPOD trial). J Indian Med Assoc 2008;106:814-5.  Back to cited text no. 11
    
12.
de la Loge C, Trudeau E, Marquis P, Kahrilas P, Stanghellini V, Talley NJ, et al. Cross-cultural development and validation of a patient self-administered questionnaire to assess quality of life in upper gastrointestinal disorders: The PAGI-QOL. Qual Life Res 2004;13:1751-62.  Back to cited text no. 12
    
13.
De La Loge C, Trudeau E, Marquis P, Revicki DA, Rentz AM, Stanghellini V, et al. Responsiveness and interpretation of a quality of life questionnaire specific to upper gastrointestinal disorders. Clin Gastroenterol Hepatol 2004;2:778-86.  Back to cited text no. 13
    
14.
Hasler WL. Gastroparesis: Pathogenesis, diagnosis and management. Nat Rev Gastroenterol Hepatol 2011;8:438-53.  Back to cited text no. 14
    
15.
Hasler WL, Wilson LA, Parkman HP, Koch KL, Abell TL, Nguyen L, et al. Factors related to abdominal pain in gastroparesis: Contrast to patients with predominant nausea and vomiting. Neurogastroenterol Motil 2013;25:427-38, e300-1.  Back to cited text no. 15
    
16.
Bielefeldt K, Raza N, Zickmund SL. Different faces of gastroparesis. World J Gastroenterol 2009;15:6052-60.  Back to cited text no. 16
    
17.
Abell TL, Bernstein RK, Cutts T, Farrugia G, Forster J, Hasler WL, et al. Treatment of gastroparesis: A multidisciplinary clinical review. Neurogastroenterol Motil 2006;18:263-83.  Back to cited text no. 17
    
18.
Camilleri M, Bharucha AE, Farrugia G. Epidemiology, mechanisms, and management of diabetic gastroparesis. Clin Gastroenterol Hepatol 2011;9:5-12.  Back to cited text no. 18
    
19.
Fass R, McCallum RW, Parkman HP. Treatment challenges in the management of gastroparesis-related GERD. Gastroenterol Hepatol 2009;5:1-2.  Back to cited text no. 19
    
20.
Rai Ramesh RB. Itopride: A prokinetic agent with dual mode of action and positive safety profile for the management of upper gastrointestinal dysmotility disorders. Int J Curr Med Pharm Res 2017;3:2549-58  Back to cited text no. 20
    


    Figures

  [Figure 1], [Figure 2]
 
 
    Tables

  [Table 1], [Table 2], [Table 3], [Table 4]



 

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