Abstract
Background
The association between hepatitis C virus (HCV), insulin resistance (IR), and metabolic syndrome has been extensively investigated. Direct-acting antivirals (DAAs) have a high sustained virologic response (SVR) rate, reaching > 90%. The effect of SVR after DAA treatment on metabolic parameters and IR in nondiabetic patients could be an important factor in the patient’s long-term outcome. The aim of the study is to evaluate the impact of different DAA regimens on IR and sensitivity in naïve chronic HCV-infected nondiabetic patients (before and after 12 weeks of treatment).
Methods
This prospective cohort study was conducted on 100 HCV-infected Child A nondiabetic patients eligible for DAA treatment in the Department of Gastroenterology and Hepatology, Ain Shams University, and Kobry El-Kobba Military Hospital among patients attending the outpatient clinic.
Patients were categorized into four groups according to the HCV regimens they received for 12 weeks.
All patient were subjected to the following tests before and 12 weeks after treatment: HCV quantitative PCR, Fibroscan, fasting insulin level (using insulin quantitative test kit), fasting and postprandial blood glucose (PPG), lipid profile, liver enzymes, BMI, and waist circumference.
Results
All patients achieved SVR at 12 weeks. In all treatment groups, lab was assessed before and after treatment, the 2-h PPG, high-density lipoprotein, and low-density lipoprotein levels showed statistically significant increases, whereas triglyceride, fasting glucose, hemoglobin A1C, and fasting plasma insulin levels showed statistically significant decreases. The homeostasis model assessment of insulin resistance (HOMA-IR) exhibited statistically significant decreases, whereas the quantitative insulin sensitivity check index (QUICKI) and Matsuda index showed statistically significant increases, across the four groups.
Conclusions
DAA treatment in naïve nondiabetic HCV-infected patients affects metabolic profile and insulin resistance/sensitivity, with similar effect among different DAA regimens.
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Background
Hepatitis C virus (HCV) has a known diabetogenic- and insulin-resistance effect on the infected patients, which could be explained by the activation of various inflammatory pathways [1]. HCV affects approximately 200 million people worldwide; however, with the introduction of the highly curative direct-acting antivirals (DAAs), several nations have organized eradication plans for the disease. Nevertheless, questions still remain about the effectiveness for the eradication of the associated metabolic effects of the virus [2]. HCV genotype 4 is the most dominant in Egypt, differing from other genotypes in its effect on liver steatosis and response to DAAs [3, 4].
Metabolic syndrome comprising steatosis, insulin resistance, and hyperlipidemia is associated with HCV, even in the absence of obesity or diabetes [5, 6]. Nonalcoholic steatohepatitis (NASH) was a common finding in liver biopsies collected before the initiation of HCV interferon treatment, and they were incorporated into the scoring system that predicted the antiviral response [7].
The standard method for evaluating insulin resistance is obviously the oral glucose tolerance test (OGTT). Another method widely used in clinics is the hyperinsulinemic-euglycemic clamp [8].
Insulin resistance is associated with a higher risk for cardiovascular disease [9]. Various insulin resistance/sensitivity scores could be measured using the insulin level. They are surrogate markers for the actual insulin resistance. Multiple validated scores for evaluating insulin resistance/sensitivity are suitable for clinical use, including the quantitative insulin sensitivity check index (QUICKI), homeostasis model assessment of insulin resistance (HOMA-IR), and Matsuda index [10]. The effect of HCV treatment on insulin resistance has been delineated by a recent meta-analysis conducted by Hu et al., which reported that HOMA-IR is decreased after achieving a sustained virologic response (SVR) [11].
Diabetes, which by the time diabetes is diagnosed, it may be too late, is preceded by a prediabetic phase, which could be detected through OGTT and fasting plasma glucose levels [12].
The aim of this study was to evaluate the efficacy of new DAAs for the treatment of chronic HCV infection in treatment-naïve nondiabetic patients on insulin resistance and insulin sensitivity using the following primary parameters for insulin resistance and sensitivity: HOMA-IR, QUICKI, and Matsuda index. Another aim was to investigate the effect of viral eradication on glucose levels and lipid profile, as a component of the complete metabolic profile of the patient.
Methods
This study was conducted at the Gastroenterology and Hepatology Department, Ain Shams University, and Kobry El-Kobba Military Hospital on 100 patients with chronic HCV infection who attended the outpatient clinic between September 2018 and June 2019. The patients were scored as Child A according to the Child–Pugh score diagnosed based on HCV-Ab by enzyme-linked immunosorbent assay (ELISA) and HCV ribonucleic acid (HCV RNA) by PCR and received treatment with DAAs.
The patients were divided into the following four groups according to the drug received:
-
Group A: 25 patients who received treatment with sofosbuvir (400 mg) and daclatasvir (60 mg) daily for 12 weeks
-
Group B: 25 patients who received treatment with sofosbuvir (400 mg) and simeprevir (150 mg) (OLYSIO) daily for 12 weeks
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Group C: 25 patients who received treatment with sofosbuvir (400 mg) and ledipasvir (90 mg) (Harvoni) daily for 12 weeks
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Group D: 25 patients who received treatment with ombitasvir (12.5 mg), paritaprevir (75 mg), and ritonavir (50 mg) single dose of two tablets (QUREVO) daily for 12 weeks
-
The treatment regimens and administration followed the most recent European Association for the Study of the Liver (EASL) guidelines [13] and the National Egyptian guidelines.
Inclusion criteria
-
1.
Patients with positive quantitative HCV RNA as assessed by polymerase chain reaction (PCR)
-
2.
Patients with the international normalized ratio INR < 1.7
-
3.
Patients with serum albumin level > 2.8 g/dl
-
4.
Patients with direct bilirubin level < 2 mg/dl
-
5.
Patients with platelet count > 100000/mm2
-
6.
Patients with serum creatinine level < 2 mg/dl
Exclusion criteria
-
1.
Coinfection with HBV
-
2.
Patients with autoimmune hepatitis
-
3.
Patients with bilharzial infection
-
4.
Patients with metabolic disorders or genetic disorders, e.g., hemochromatosis or Wilson’s disease
-
5.
Patients with decompensated cirrhosis with the following conditions:
-
a.
INR > 1.7
-
b.
Serum albumin level < 2.8 g/dl
-
c.
Total bilirubin level > 2 mg/dl
-
d.
Platelet count < 100/mm3
-
e.
Ascites
-
f.
Splenomegaly
-
a.
-
6.
Patients with high level of serum total cholesterol > 240 mg/dL or triglycerides (TG) level (> 200 mg/dL)
-
7.
Patients with diabetes diagnosed by fasting blood glucose, 2-h postprandial blood glucose, and glycated hemoglobin (HbA1C) levels
-
8.
Patients with renal failure
-
9.
Patients with hypertension
-
10.
Patients with malignancy, either primary hepatocellular carcinoma (HCC) or secondary, or a previous history of malignancy and chemotherapy
-
11.
Patients with hypothyroidism or hyperthyroidism
All patients were subjected to the following examinations:
-
1.
Appropriate history-taking and clinical examination, including the following:
-
a.
Waist circumference to exclude metabolic syndrome
Waist circumference ≥ 102 cm in men or ≥ 88 cm in women
-
b.
Measuring body mass index (BMI) = weight in kg/height in m2
-
a.
-
2.
Laboratory investigations, including the following:
-
a.
HCV RNA by PCR before and 3 months after treatment. Assessment was done using the Roche COBAS TaqMan HCV assay V.2.0 (lower limit of detection 15 IU/m).
-
b.
Liver function tests, including ALT, AST, albumin, and total bilirubin levels
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c.
Kidney function tests, including urea and serum creatinine levels
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d.
Complete blood count
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e.
Prothrombin time and INR
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f.
Alpha-fetoprotein tumor marker (AFP)
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g.
Lipid profile, including TG, high-density lipoproteins (HDL), low-density lipoproteins (LDL), and cholesterol levels, we included borderline and normal levels of cholesterol & TG, but excluded high levels, according to Mayo clinic serum levels.
-
h.
Fasting blood sugar, 2-h postprandial blood glucose, we used OGTT; each patient fasted for 8 h and was then administered 75 g glucose in the form of soluble sugar, and HbA1C levels.
-
i.
Fasting serum insulin was measured using the insulin quantitative test kit, which is based on a solid-phase ELISA. The assay system uses first an anti-insulin antibody for solid-phase (microtiter wells) immobilization and then an anti-insulin antibody in the antibody-enzyme (horseradish peroxidase) conjugate solution. The standards and test specimen (serum) were added to the insulin antibody-coated microtiter wells. Then, the anti-insulin antibody labeled with horseradish peroxidase (conjugated) was added. The presence of human insulin in the test tube causes the formation of a molecular aggregate by the combination of the antibody on the well and the enzyme conjugate, where the insulin molecules are sandwiched between the solid-phase and enzyme-linked antibodies. The wells of the labeled but unbound antibodies were washed after 1 h of incubation at room temperature. A blue color developed due to the addition of TMB solution and incubation for 20 min. The color development stopped after the addition of the stop solution, and then the color changed to yellow, at which time point it was measured spectrophotometrically at 450 nm. The color intensity in the test sample is directly proportional to the insulin concentration.
-
j.
Radiological investigations, including pelvic–abdominal ultrasound examination to assess the homogeneity, echogenicity, and brightness of the liver, as well as the liver and spleen dimensions, portal vein diameter and splenic vein diameter, and the presence of thrombosis or focal lesions
-
k.
Electrocardiogram (ECG) and echocardiography for patients aged > 70 years
-
l.
Assessment of insulin resistance: HOMA-IR was evaluated before and after treatment.
HOMA-IR = Fasting serum insulin × Fasting serum glucose (mg/dl)/405 [14].
-
m.
Assessment of insulin sensitivity: QUICKI and Matsuda index were measured before and after SVR.
-
1.
QUICKI: Quantitative insulin sensitivity check index
QUICKI = 1/(log fasting insulin + log fasting glucose) [10].
-
2.
Matsuda index: This is used to assess the level of insulin sensitivity, which is calculated using plasma glucose and insulin levels [15].
$$\mathrm{Matsuda}\ \mathrm{index}=1000/\surd \left(\mathrm{fasting}\ \mathrm{glucose}\times \mathrm{fasting}\ \mathrm{insulin}\right)\times \left(\mathrm{mean}\ \mathrm{glucose}\times \mathrm{mean}\ \mathrm{insulin}\right)$$ -
1.
-
a.
A level of> 4.3 predicts insulin resistance [10].
After obtaining approval from the local institutional ethics committee, and an individual agreement of each participant in the study, an informed and written consent was obtained from each participant (Ethical Committee Approval number FMASU-MD-321/2017).
Statistical methods
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1.
Data analysis was conducted using the SPSS program version 23.
-
2.
Quantitative data were expressed as mean and SD.
-
3.
Qualitative data were presented as count and percentage.
-
4.
One-way ANOVA was used to compare quantitative data between different groups followed by post hoc test when significant.
-
5.
Fisher’s exact test was used to compare qualitative data between groups.
-
6.
Paired samples t test was used to compare data before and after treatment.
-
7.
Repeated measures ANOVA was used to compare changes in quantitative data before and after treatment between different groups.
-
8.
P < 0.05 was considered to be statistically significant.
Results
SVR was achieved at 12 weeks in all the 100 patients (100%), irrespective of the type of medications they received (groups A, B, C, and D).
Tables 1 and 2 show the comparison between the four groups according to the demographic data (age and gender). Group A consisted of 23 men (92%) and 2 women (8%) aged (mean ± standard deviation) 57 ± 9 years. Group B consisted of 25 men (100%) aged 58 ± 7 years. In group C, there were 23 men (92%) and 2 women (8%) aged 59 ± 9 years. Group D comprised 24 men (96%) and 1 woman (4%) aged 58 ± 7 years showing no statistical significance across groups. Among the study patients, there were 95 men and 5 women with age ranging from 34 to 72 years (mean age = 58.16 years). Patients with chronic HBV coinfection, HIV coinfection, schistosomiasis, and autoimmune hepatitis were excluded. Figure 1 shows the demographic data (height, weight, and BMI) of the four groups.
Table 3 shows the comparison between the four groups according to laboratory data. At baseline, the TG level was highly significant (P < 0.001). Platelet count, total bilirubin, serum albumin, and INR showed positive statistical significance (P < 0.05). The remaining laboratory data (hemoglobin level, total leukocyte count, neutrophil count, lymphocyte count, ALT, AST, PT, serum creatinine, urea, total cholesterol, HDL, LDL, and AFP levels and PCR findings) showed no statistical significance.
The “a” and “b” post hoc test revealed statistically significant differences between groups A and C and between groups A and D in terms of TG level. The Kruskal–Wallis test revealed a statistically significant difference between the groups; however, it did not identify the groups that were different.
The liver dimensions showed no changes in groups A and B, but a statistically significant difference was detected in groups C and D between the dimensions at baseline and those after achieving SVR, as shown in Table 4.
Lipid profiles showed statistically significant increases in total cholesterol (mg/dl) from baseline to SVR at 12 weeks as follows: group A (from 172.6 ± 30.99 to 189.36 ± 27.25), group B (from 163 ± 20.37 to 184.16 ± 26.61), group C (from 166.52 ± 20.42 to 182.12 ± 27.86), and group D (from 166.52 ± 20.42 to 182.12 ± 27.86). These data are shown in Figs. 2A, 3A, 4A, and 5A, respectively.
HDL levels exhibited statistically significant increases from baseline to SVR at 12 weeks as follows: group A (from 44.48 ± 11.08 to 50.92 ± 8.84), group B (from 40.04 ± 5.56 to 44.64 ± 6.93), group C (from 39.84 ± 6.91 to 42.68 ± 7.05), and group D (from 39.84 ± 6.91 to 42.68 ± 7.05). These results are illustrated in Figs. 2A, 3A, 4A, and 5A, respectively.
Similarly, LDL levels (mg/dl) showed statistically significant increases from baseline to SVR at 12 weeks in groups A, B, C, and D as follows: from 98.4 ± 30.09 to 105.96 ± 28.56, from 78 ± 26.08 to 86.96 ± 25.65, from 90.99 ± 25.23 to 99.64 ± 26.9, and from 85.16 ± 25.98 to 93.76 ± 26.92, respectively. However, TG levels showed statistically significant decreases from baseline to SVR at 12 weeks in the four groups as follows: from 119.76 ± 44.73 to 89.28 ± 27.6, from 164.96 ± 19.82 to 115.04 ±18.94, from 176.64 ± 19.58 to 122.2 ± 24.45, and from 167.64 ± 19.58 to 122.2 ± 24.45, respectively. These data are shown in Figs. 2A, 3A, 4A, and 5A, respectively.
Regarding blood glucose (mg/dl), the fasting levels were significantly decreased from baseline to SVR at 12 weeks in the four groups as follows: in group A, from 92.64 ± 8.84 to 91.12 ± 8.55; in group B, from 87.28 ± 8.29 to 86.64 ± 8.55; in group C, from 88.68 ± 9.48 to 87.16 ± 10.08; and in group D, from 91.4 ± 8.15 to 90.16 ± 8.51 (Figs. 2B, 3B, 4B, and 5B, respectively).
However, the 2-h postprandial blood glucose levels showed statistically significant increases from baseline to SVR at 12 weeks in the four groups as follows: from 151.72 ± 16.34 to 181.16 ± 10.55, from 160.8 ± 11.47 to 184.48 ± 9.84, from 153.08 ± 31.69 to 184.52 ± 10.91, and from 163.24 ± 13.37 to 183.84 ± 11.25, respectively. A comparison of results could not reveal the effect of DAAs on 2-h postprandial blood glucose levels. These findings are illustrated in Figs. 2B, 3B, 4B, and 5B, respectively.
HbA1c levels were statistically significantly decreased from baseline to SVR at 12 weeks in group A (from 5.98 ± 0.54 to 5.22 ± 0.86), group B (from 5.7 ± 0.41 to 5.28 ± 0.74), group C (from 5.75 ± 0.48 to 4.91 ± 0.7), and group D (from 5.65 ± 0.48 to 5.15 ± 0.69). These data are shown in Figs. 2C, 3C, 4C, and 5C, respectively.
Regarding fasting serum insulin, the levels showed statistically significant decreases from baseline to SVR at 12 weeks in group A (from 14.04 ± 6.09 to 9.77 ± 4.44), group B (from 15.36 ± 5.69 to 11.14 ± 3.88), group C (from 13.32 ± 5.61 to 9.58 ± 3.73), and group D (from 15.76 ± 6.48 to 10.75 ± 4.75), as shown in Figs. 2C, 3C, 4C, and 5C, respectively.
The HOMA-IR values also showed statistically significant decreases from baseline to SVR at 12 weeks in group A (from 3.19 ± 1.35 to 2.17 ± 0.96), group B (from 3.33 ± 1.31 to 2.38 ± 0.9), group C (from 2.9 ± 1.22 to 2.04 ± 0.76), and group D (from 3.55 ± 1.48 to 2.38 ± 1.09), as shown in Fig. 6A. The overall data and statistical differences are shown in Table 4.
The QUICKI values in our study exhibited significant increases from baseline to SVR at 12 weeks in group A (from 0.33 ± 0.02 to 0.35 ± 0.03), group B (from 0.32 ± 0.02 to 0.34 ± 0.02), group C (from 0.33 ± 0.02 to 0.35 ± 0.02), and group D (from 0.32 ± 0.03 to 0.34 ± 0.03), as shown in Fig. 6B. The overall data and statistical differences are shown in Table 4.
Regarding the Matsuda index, the values showed significant increases from baseline to SVR at 12 weeks in group A (from 5.57 ± 2.03 to 6.57 ± 2.31), group B (from 5.53 ± 2.4 to 6.34 ± 2.16), group C (from 6.02 ± 1.92 to 6.91 ± 2.34), and group D (from 5.17 ± 2.22 to 6.43 ± 2.91), as shown in Fig. 6C. The overall data and statistical differences are shown in Table 4.
Regarding the ultrasound findings, the values showed significant decrease in the liver dimensions from baseline to SVR at week 12 in group B and D only while the other groups showed no change (Tables 5 and 6). All groups did not show any change in spleen dimensions.
Discussion
The effect of DAAs on insulin resistance and sensitivity is an important subject in the post-HCV eradication era, where insulin resistance and hepatic steatosis remain new unresolved dilemmas. Although various studies have been conducted in this regard, each study concentrated on only one facet of the problem, i.e., either HOMA-IR, HOMA-β, or glucose levels and HbA1C or lipid profile and liver steatosis. In the present study, we evaluated the effect of treatment on all these parameters to assess the metabolic problem of the patients in general. Furthermore, we excluded all patients with abnormalities in their glucose tolerance test to ensure that there is no previous metabolic imbalance or an apparent prediabetic risk. Surprisingly, we found that even this strict category of patients (with normal OGTT) benefited from the eradication of HCV infection and showed a marked decrease in their lipid, glucose, and insulin levels.
In a recent study conducted by Mada et al., achieving SVR by DAAs was shown to result in a significant improvement of HbA1C levels in diabetic patients [16]. In our study, the HbA1C level was similarly significantly decreased after SVR at 12 weeks, although the patients were nondiabetic.
In the present study, LDL levels showed a statistically significant increase in all the four groups after achieving SVR. This finding is consistent with previous studies on LDL levels after achieving SVR at 12 weeks, where the levels were found to increase with viral eradication [17, 18]. This could be explained by the decreased production of lipid droplets from hepatocytes due to the rapid decline in the core HCV protein, consequently followed by an increase in “rebound” LDL levels [19]. Hashimoto et al. [20] reported a rapid increase in LDL-C and TG levels in the early treatment phase (first 28 days), which was higher in patients treated with LDV/SOF than in patients treated with DCV/ASV.
In our study, cholesterol, LDL, and HDL levels were increased in all the four groups. The highest cholesterol increase was observed in group B, and the highest HDL increase was observed in group A, whereas LDL increase did not differ between the groups. TG levels were declined across all the study groups, but the highest level was found in group C. Glucose, HbA1C, and insulin levels were decreased with no difference across the study groups. This finding could help guide our choice of the DAA combination for treating patients with insulin resistance and/or with a special type of hyperlipidemia.
Liver dimensions were decreased after treatment with DAAs in our study, which could be due to the resolution of chronic hepatitis and the decline in the associated inflammatory response [21].
Regarding the HOMA-IR values, we detected a significant “within-subjects” effect, indicating a significant change in score over time. The “between-subjects” effect was not statistically significant, indicating that the mean score did not differ significantly between the study groups. There was no interaction between the variables time and drug type.
Hashim et al. [22] demonstrated that of the 75 patients treated for HCV infection by DAAs, the HOMA-IR value improved in 72% and 73.3% of patients after 12 weeks and 6 months, respectively. Compared with the interferon treatment era, the eradication of HCV infection showed a decline in HOMA-IR, fasting insulin, and glucose levels in the patients [8]. Adinolfi et al. found that HOMA-IR levels were decreased in nondiabetic patients treated for HCV genotype 1, with the viral-clearing effect being irrespective of BMI or baseline liver fibrosis [23].
In another Egyptian study conducted in the National Liver Institute, Menoufia University, the researchers found that different DAA regimens were associated with an increase in insulin secretion as evaluated by HOMA-β, an increase in insulin sensitivity as assessed by HOMA-S, and a decrease in insulin resistance as determined by HOMA-IR when SVR was achieved at 12 weeks [24]. Russo et al. examined the effect of DAAs on nondiabetic patients with HCV infection and found that insulin levels were decreased even in cirrhotic patients, or in those with high BMI, but the levels of BMI, fasting glucose, and HOMA-IR showed no significant changes after 12 weeks of treatment. This could be attributed to the baseline heterogeneity of the examined population, i.e., although they were nondiabetic, OGTT was not performed before treatment to analyze their glucose tolerance. However, their study showed similar effects on lipid profile as those observed in our study. Hu et al. [11] conducted a meta-analysis to investigate the effect of HCV treatment on insulin resistance in interferon-containing regimens and found that HOMA-IR and HOMA-β levels were significantly decreased in patients who achieved SVR compared with those who did not achieve SVR.
We could not find a comparative study regarding the QUCKI and Matsuda indices in patients before receiving DAAs and after achieving SVR at 12 weeks.
Our study showed that for HOMA-IR, QUICKI, and Matsuda index scores, there were significant “within-subjects” effects, indicating significant changes in score over time. The “between-subjects” effects were not statistically significant, indicating that the mean scores did not differ significantly between the study groups. There was no interaction between the variables time and drug type, implying that the improvement in all indices occurs irrespective of the DAA regimen administered to the patients, with mild variations.
The QUICKI and Matsuda index scores could be used to detect insulin sensitivity interchangeably with other surrogate scores used for the same calculation as HOMA-S.
In our study, the improvement in insulin sensitivity and resistance was also reflected in the improvement in fasting and postprandial glucose levels after achieving SVR at 12 weeks. Moreover, there was an improvement in HbA1C levels in all the study groups. Our study population did not have diabetes, and their GTT result was within normal range, yet the improvement in glucose indices was apparent. This finding shows that even in nondiabetic patients, HCV treatment might affect the long-term quality of life of the patient by decreasing the risk for diabetes and metabolic imbalances. The effect of DAAs on glycemic control was also apparent in a recent Egyptian study conducted on 32 diabetic patients with HCV infection. El-Badry et al. found that achieving SVR decreased the HbA1C level by > 1% [25], which could be explained by the elimination of HCV that causes downregulation of glucose transporter (1 and 2) along with decreased glucose uptake, accompanied by upregulation of hepatic gluconeogenesis [26, 27].
The fasting blood sugar has improved which is an important parameter when diagnosing DM. In addition, it is documented that the metabolic profile of patients post treatment may worsen at first few months as LDL increase and then after a longer period of follow-up, the levels return to normal; this is explained by the effect of HCV on LDL receptors. Moreover, despite the increased level of postprandial blood sugar, they did not exceed the limit for overt diabetes diagnosis. We expect this elevation to be temporary as proved by previous studies on interferon therapy, but our study is limited to 3 months follow-up after treatment.
In our study, there were only 5% of female patients, which is consistent with previous studies that reported that women are more likely to clear the virus than men among Egyptian populations [28], indicating the variability of the infection in women along with geographical distribution [29]. Moreover, hepatic markers, including liver enzymes, coagulation profiles, albumin, and bilirubin, were improved after achieving SVR at 12 weeks, which is consistent with a systematic review conducted by Zeng et al. who stated that “liver function repair” is associated with DAAs in at least two-thirds of the treated patients [30].
Conclusions
Lipid profile, except LDL, insulin sensitivity/resistance, and glucose parameters improved after achieving SVR after treatment with different anti-HCV DAAs in patients with normal glucose tolerance. Using various surrogate indices to detect insulin sensitivity/resistance after achieving SVR showed no difference, and hence, they could be used interchangeably.
We recommend a strict follow-up for all patients post-HCV treatment at least for 6 months. Special attention to patients with basal metabolic disturbances is also recommended.
Availability of data and materials
Available when requested from the authors.
Abbreviations
- AFP:
-
Alpha-fetoprotein tumor marker
- BMI:
-
Body mass index
- DAAs:
-
Direct-acting antivirals
- EASL:
-
European Association for the Study of the Liver
- ECG:
-
Electrocardiogram
- ELISA:
-
Enzyme-linked immunosorbent assay
- HbA1C:
-
Glycated hemoglobin
- HCC:
-
Hepatocellular carcinoma
- HCV:
-
Hepatitis C virus
- HCV RNA:
-
HCV ribonucleic acid
- HDL:
-
High-density lipoproteins
- HOMA-IR:
-
Homeostasis model assessment of insulin resistance
- INR:
-
The international normalized ratio
- LDL:
-
Low-density lipoproteins
- NASH:
-
Nonalcoholic steatohepatitis
- OGTT:
-
Oral glucose tolerance test
- PCR:
-
Polymerase chain reaction
- PPG:
-
Postprandial blood glucose
- QUICKI:
-
Quantitative insulin sensitivity check index
- SVR:
-
Sustained virologic response
- TG:
-
Triglycerides
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Dr. Tarek Yosef: The primary investigator who designated the idea and supervised the progress of the work. Dr. Ahmed ElGhandour: Follow up of the clinical cases and assessment of the inclusion criteria of the patients. Dr. Soha Saied: Collection and assembly of data and writing of the manuscript. Dr. Sarah El-Nakeep: Formulating of the research idea, follow up the progress of data collection, and writing of the manuscript. All authors revised and accepted the final version of the manuscript. The author(s) read and approved the final manuscript.
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Yosef, T., Ibrahim, W.A., El-Ghandour, A. et al. Effect of different direct-acting antiviral regimens for treatment of nondiabetic hepatitis C virus–infected Egyptian patients on insulin resistance and sensitivity. Egypt J Intern Med 33, 45 (2021). https://doi.org/10.1186/s43162-021-00075-8
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DOI: https://doi.org/10.1186/s43162-021-00075-8