Search

Anethole is a terpenoid with antioxidant, anti-inflammatory, and neuronal blockade effects, and the present work was undertaken to study the neuroprotective activity of anethole against diabetes mellitus (DM)-induced neuropathy. Streptozotocin-induced DM rats were used to investigate the effects of anethole treatment on morphological, electrophysiological, and biochemical alterations of the sciatic nerve (SN). Anethole partially prevented the mechanical hyposensitivity caused by DM and fully prevented the DM-induced decrease in the cross-sectional area of the SN. In relation to electrophysiological properties of SN fibers, DM reduced the frequency of occurrence of the 3rd component of the compound action potential (CAP) by 15%. It also significantly reduced the conduction velocity of the 1st and 2nd CAP components from 104.6 ± 3.47 and 39.8 ± 1.02 to 89.9 ± 3.03 and 35.4 ± 1.56 m/s, respectively, and increased the duration of the 2nd CAP component from 0.66 ± 0.04 to 0.82 ± 0.09 ms. DM also increases oxidative stress in the SN, altering values related to thiol, TBARS, SOD, and CAT activities. Anethole was capable of fully preventing all these DM electrophysiological and biochemical alterations in the nerve. Thus, the magnitude of the DM-induced neural effects seen in this work, and the prevention afforded by anethole treatment, place this compound in a very favorable position as a potential therapeutic agent for treating diabetic peripheral neuropathy. [ABSTRACT FROM AUTHOR]

Background: The thyroid hormone is so essential that it is involved in the functioning of all the body systems, especially in the development of the brain in fetal life. The World Health Organization has estimated that around 2 billion individuals are suffering from thyroid disorders. Hence, it is essential to identify and diagnose hypothyroid patients so that the treatment strategy can be started at the earliest. Aims and Objectives: The present study aimed to find out the peripheral nerve conduction velocity, range, and degree of movement of joints in newly diagnosed hypothyroid women and compare them with those of normal euthyroid women. Materials and Methods: The present study was a case–control study conducted from July 2015 to March 2016. A total of 50 cases of newly diagnosed hypothyroid women and 50 age-matched euthyroid women were part of the study after obtaining written and informed consent. Thyroid estimation was performed in the Clinical Biochemistry Department by the ELISA method, and nerve conduction studies were performed in the Neurology Department. Results: The age and height of the participants were not statistically significant. Weight and body mass index were significantly higher in the cases when compared to the control group. Sensory and motor conduction velocities of the right median nerve are significantly less in these cases when compared to control group participants. Sensory and motor conduction velocities of the right ulnar nerve are significantly less in these cases when compared to control group participants. Sensory and motor conduction velocities of the left median nerve are significantly less in these cases when compared to control group participants. Sensory and motor conduction velocities of the left ulnar nerve are significantly less in these cases when compared to control group participants. The goniometric parameters (right and left sides) of the cases and control group participants were not significantly different. Conclusion: Hypothyroid women have a delay in peripheral nerve conduction velocities, including sensory and motor components, and the degree and range of movements of limb joints were not affected. A nerve conduction study may be utilized as a routine screening test for hypothyroid individuals so that hormone replacement therapy can be instituted at the earliest.

Background: Decades following the introduction of vincristine as treatment for haematological malignancies, vincristine-induced peripheral neuropathy (VIPN) remains a pervasive, untreatable side-effect. However there remains a gap in understanding the characteristics of VIPN in adults. This study presents a comprehensive phenotyping of VIPN. Methods: Adult patients (n = 57; age = 59.8 ± 14.6) were assessed cross-sectionally following completion of vincristine (months post treatment = 16.3 ± 15.6, cumulative dose = 7.6 ± 4.4), with a subset of 20 patients assessed prospectively during treatment. Patient reported measures (EORTC-QLQ-CIPN20, R-ODS) were used to profile symptoms and disability. Neurological assessment was undertaken using the Total Neuropathy Score and nerve conduction studies. Sensory threshold and fine motor tasks were also undertaken. Comparisons of data between timepoints were calculated using paired-sample t tests or Wilcoxon matched-pairs signed-rank test. Comparisons between outcome measures were calculated with independent sample t tests or Mann–Whitney U tests for non-parametric data. Results: The majority of patients developed VIPN by mid-treatment (77.8%, 7.0 ± 3.3 weeks post baseline) with the prevalence remaining stable by end-of-treatment (75%, 8.1 ± 1.7 weeks post mid-treatment). By 3 months post-completion, 50% of patients still reported VIPN although there were significant improvements on neurological grading and functional assessment (P < 0.05). VIPN presented with sensorimotor involvement in upper and lower limbs and was associated with decreased sensory and motor nerve amplitudes, reduced fine-motor function and increased disability. Conclusion: VIPN in adults presents as a sensorimotor, upper- and lower-limb neuropathy that significantly impacts disability and function. Neuropathy recovery occurs in a proportion of patients; however, VIPN symptoms may persist and continue to affect long-term quality of life. [ABSTRACT FROM AUTHOR]

Introduction/Aims: Nerve conduction studies (NCSs) are widely used to support the clinical diagnosis of neuromuscular disorders. The aims of this study were to obtain reference values for peroneal, tibial, and sural NCSs and to examine the associations with demographic and anthropometric factors. Methods: In 5099 participants (aged 40–79 years) without type 2 diabetes of The Maastricht Study, NCSs of peroneal, tibial, and sural nerves were performed. Values for compound muscle action potential (CMAP) and sensory nerve action potential amplitude, nerve conduction velocity (NCV), and distal latency were acquired. The association of age, sex, body mass index (BMI), and height with NCS values was determined using uni‐ and multivariate linear regression analyses. Results: Detailed reference values are reported per decade for men and women. Significantly lower NCVs and longer distal latencies were observed in all nerves in older and taller individuals as well as in men. In these groups, amplitudes of the tibial and sural nerves were significantly lower, whereas a lower peroneal nerve CMAP was only significantly associated with age. BMI showed a multidirectional association. After correction for anthropometric factors in the multivariate analysis, the association between sex and NCS values was less straightforward. Discussion: These values from a population‐based dataset could be used as a reference for generating normative values. Our findings show the association of NCS values with anthropometric factors. In clinical practice, these factors can be considered when interpreting NCS values. [ABSTRACT FROM AUTHOR]

Introduction: Generalized joint hypermobility (GJH) can be the result of several hereditary connective tissue disorders, especially Ehlers–Danlos syndrome. Cerebrovascular manifestations are among the most common complications in this disorder, and understanding their extent can help better diagnosis and prevention of hazardous events. We investigated visual evoked potential (VEP) changes in patients with GJH and compared them with healthy individuals. Methods: Our case–control study included 90 patients who fulfilled the Beighton score (B score) for joint hypermobility and other 90 healthy participants. All of them went under VEP study, and the amplitude and latency of the evoked potential (P100) were compared to each other. Results: The Case group had significantly higher B score (7.18 ± 0.967 vs. 1.18 ± 0.712), P100 latency (110.23 ± 6.64 ms vs. 100.18 ± 4.273 ms), and amplitude (6.54 ± 1.26 mv vs. 6.50 ± 1.29 mv) compared with the Control group, but the difference was only significant regarding B score, and P100 latency (p‐value <.0001). Moreover, both latency and amplitude of P100 had significantly positive correlations with the B score in the Case group (p‐value <.0001), but such correlations were not found in the Control group (p‐value =.059). Conclusion: Our study could reveal VEP changes, especially significant P100 latency in GJH patients without previous neurologic or musculoskeletal disorders. Whether these changes are due to GJH itself or are predictive of inevitable neurologic disease or visual pathway involvement, particularly Multiple Sclerosis needs further investigation with longer follow‐up periods. [ABSTRACT FROM AUTHOR]

Background: The thyroid hormone is so essential that it is involved in the functioning of all the body systems, especially in the development of the brain in fetal life. The World Health Organization has estimated that around 2 billion individuals are suffering from thyroid disorders. Hence, it is essential to identify and diagnose hypothyroid patients so that the treatment strategy can be started at the earliest. Aims and Objectives: The present study aimed to find out the peripheral nerve conduction velocity, range, and degree of movement of joints in newly diagnosed hypothyroid women and compare them with those of normal euthyroid women. Materials and Methods: The present study was a case--control study conducted from July 2015 to March 2016. A total of 50 cases of newly diagnosed hypothyroid women and 50 age-matched euthyroid women were part of the study after obtaining written and informed consent. Thyroid estimation was performed in the Clinical Biochemistry Department by the ELISA method, and nerve conduction studies were performed in the Neurology Department. Results: The age and height of the participants were not statistically significant. Weight and body mass index were significantly higher in the cases when compared to the control group. Sensory and motor conduction velocities of the right median nerve are significantly less in these cases when compared to control group participants. Sensory and motor conduction velocities of the right ulnar nerve are significantly less in these cases when compared to control group participants. Sensory and motor conduction velocities of the left median nerve are significantly less in these cases when compared to control group participants. Sensory and motor conduction velocities of the left ulnar nerve are significantly less in these cases when compared to control group participants. The goniometric parameters (right and left sides) of the cases and control group participants were not significantly different. Conclusion: Hypothyroid women have a delay in peripheral nerve conduction velocities, including sensory and motor components, and the degree and range of movements of limb joints were not affected. A nerve conduction study may be utilized as a routine screening test for hypothyroid individuals so that hormone replacement therapy can be instituted at the earliest. [ABSTRACT FROM AUTHOR]

Simple Summary: Acute polyradiculoneuritis is a common peripheral nerve disorder in dogs, in most cases self-limiting and benign. Electrodiagnostic tests are frequently performed 7 days after the beginning of clinical signs, delaying the correct diagnosis of ACP and other diseases with similar onset. This study aims to retrospectively evaluate 71 dogs with suspected cases of acute polyradiculoneuritis for whom early electrodiagnostic testing (within 6 days) was conducted on some dogs and later testing (7–15 days) on others. Dogs tested later (7–15 days) exhibited more electromyographic abnormalities. Patients tested in the first 6 days exhibited frequent motor nerve conduction and F-wave abnormalities, similar to patients tested between 7 and 15 days. Our results suggest that neurophysiological abnormalities in acute polyradiculoneuritis can be detected within 6 days, enabling an early diagnosis. Acute canine polyradiculoneuritis (ACP) is a common peripheral neuropathy in dogs, and is generally self-limiting and benign. Electrodiagnostic (EDX) tests are typically performed after 7–10 days. Delaying the definitive diagnosis may hamper the treatment of other causes of acute weakness, which may require specific treatments and may carry different prognoses. This retrospective multicenter study aims to assess whether EDX performed within the first 6 days of clinical signs onset can detect alterations indicative of ACP, and aims to characterize the most prevalent alterations. A total of 71 dogs with suspected ACP were retrospectively analyzed and classified into two groups based on EDX timing: early group (EG, 1–6 days after symptom onset) and late group (LG, 7–15 days after symptom onset). In our study, no significant differences were found between the two groups in motor nerve conduction studies (MNCSs) and F-wave analysis, indicating that EDX is able to demonstrate abnormalities even in the first 6 days from onset. Although the LG showed significantly greater degrees of electromyographic (EMG) alterations compared to the EG, frequent muscle alterations were still observed in the EG group. These findings support the use of EDX in patients with suspected ACP within the first 6 days from the clinical onset. Prompt neurophysiological examinations for suspected ACP patients can be performed effectively and can help allow for early diagnosis and facilitate appropriate treatment. [ABSTRACT FROM AUTHOR]

Background: Painters are constantly exposed to organic solvents containing volatile organic compounds (VOCs), a primary source of indoor air pollution. Prolonged exposure to solvents generates significant health repercussions on pulmonary and neurological functioning. Few studies have assessed the neurological function of unorganized sector painters objectively, especially in developing nations. The current research evaluates the effects of organic solvents on neurological functions in painters working in unorganized sectors like construction sites in Chennai. Methods: A validated questionnaire was used to assess solvent-exposed neurological symptoms in full-time painters (n = 75) aged 25–55, stratified by years of exposure (≤10 years, >10 years). A subset of 35 painters underwent bilateral median nerve motor and sensory nerve conduction studies. Personal exposure monitors measured VOC concentration during the painting processes. Results: Toluene and benzene concentrations were greater in paint scraping. 47% of painters reported neurological symptoms, and those with >10 years of experience had a higher AOR (95%CI): 3.4 (1.3, 9.6). 13% had diplopia, 18% had ocular discomfort. Painters with more than 10 years of experience had longer motor and sensory onset latency of the left median nerve, as well as decreased bilateral sensory conduction velocities (Right median nerve: 53.8 ± 13.9 vs 64.2 ± 5.2; Left median nerve: 55.75 ± 6.5 vs 64.3 ± 6.2). Conclusion: Paint emits toluene, a major solvent. The impact of occupational exposure to organic solvents on neurological functions has been observed to exhibit a progressive deterioration over time. Health awareness and strict protective measure legislation are needed to reduce morbidity and mortality in these unorganized sectors.

ABSTRACT Aims/Introduction Early diagnosis of diabetes‐associated cardiac autonomic neuropathy using the coefficient of variation of R‐R intervals (CVRR) may improve outcomes for individuals with diabetes. The present study examined the associations of decreased CVRR at rest and during deep breathing (DB) with other autonomic nerve function parameters. Materials and Methods The electronic records of 141 inpatients with diabetes (22–65 years) admitted to our hospital between March 2015 and March 2019 were analyzed retrospectively. After assessment by exclusion criteria, 51 inpatients were included. All inpatients were assessed for peripheral and autonomic nerve function, clinical characteristics, and physical abilities. Results Inpatients with decreased CVRR at rest (n = 9 (17.6%)) and during DB (n = 12 (23.5%)) had a longer duration of known diabetes, a higher prevalence of diabetic retinopathy, lower body mass index (BMI), skeletal mass index (SMI), and knee extension strength, and a higher proportion of impaired standing balance. Decreased CVRR at rest was associated with a greater fall in diastolic BP from supine to standing, higher resting HR, longer QTc, longer time of voiding, and sensory symptoms. Conclusions Decreased CVRR at rest and during deep breathing was associated with lower BMI, SMI, and knee strength and a higher proportion of impaired standing balance among non‐elderly inpatients with diabetes. Decreased CVRR at rest appeared more strongly associated with a greater orthostatic BP decline, higher resting heart rate, longer QTc, lower urinary tract dysfunction, and sensory symptoms than a decreased CVRR during deep breathing.

Introduction: Adenosine plays an important role in increasing glucose uptake into muscles. Adenosine deaminase (ADA) enzymes convert adenosine into inosine and 2′-deoxyinosine. Increased ADA activity leads to the reduction of adenosine, subsequently lowering glucose absorption in skeletal muscles. Uncontrolled diabetes tends to result in complications such as diabetic neuropathy. To investigate the association between serum ADA levels and lower limb nerve conduction velocity in individuals with type II diabetes mellitus. Methods: This study included 60 participants, with 30 patients in the diabetes group and the remaining 30 in the control group. Serum ADA levels were measured, and nerve conduction recordings were performed on the lower limb’s motor peroneal, tibial, and sensory sural nerves. Results: In diabetes patients, lower limb sensory sural nerves, motor tibial, and peroneal nerves showed increased latency, reduced amplitude, and decreased nerve conduction velocity compared to the control group. ADA levels were found to be higher in diabetic patients than in the control group. A negative correlation was observed between sensory sural nerve conduction velocity and ADA levels, with females exhibiting more negative correlations than males. No association was found between motor peroneal and motor tibial nerve conduction parameters and ADA levels. Conclusion: Sensory nerves are affected much earlier than motor nerves under hyperglycemic conditions. Elevated ADA levels indicate reduced insulin sensitivity, and the depletion of adenosine contributes to nerve damage. ADA levels could be useful in diagnosing early peripheral nerve damage. [ABSTRACT FROM AUTHOR]

Aims/Introduction: Early diagnosis of diabetes‐associated cardiac autonomic neuropathy using the coefficient of variation of R‐R intervals (CVRR) may improve outcomes for individuals with diabetes. The present study examined the associations of decreased CVRR at rest and during deep breathing (DB) with other autonomic nerve function parameters. Materials and Methods: The electronic records of 141 inpatients with diabetes (22–65 years) admitted to our hospital between March 2015 and March 2019 were analyzed retrospectively. After assessment by exclusion criteria, 51 inpatients were included. All inpatients were assessed for peripheral and autonomic nerve function, clinical characteristics, and physical abilities. Results: Inpatients with decreased CVRR at rest (n = 9 (17.6%)) and during DB (n = 12 (23.5%)) had a longer duration of known diabetes, a higher prevalence of diabetic retinopathy, lower body mass index (BMI), skeletal mass index (SMI), and knee extension strength, and a higher proportion of impaired standing balance. Decreased CVRR at rest was associated with a greater fall in diastolic BP from supine to standing, higher resting HR, longer QTc, longer time of voiding, and sensory symptoms. Conclusions: Decreased CVRR at rest and during deep breathing was associated with lower BMI, SMI, and knee strength and a higher proportion of impaired standing balance among non‐elderly inpatients with diabetes. Decreased CVRR at rest appeared more strongly associated with a greater orthostatic BP decline, higher resting heart rate, longer QTc, lower urinary tract dysfunction, and sensory symptoms than a decreased CVRR during deep breathing. [ABSTRACT FROM AUTHOR]

Patients with peripheral neuropathy with type 2 diabetes mellitus (T2DM) are more likely to have functional impairments. Recently, the gene for serum sterile alpha and toll/interleukin receptor motif-containing protein 1 (SARM1), which may contribute to the pathogenesis of Wallerian degeneration, was discovered in mice models of peripheral neuropathy. We set out to assess serum SARM1's activity as a potential biomarker for the early identification of diabetic peripheral neuropathy in T2DM patients while also examining the impact of the COVID-19 vaccine on SARM1 levels. We assessed the cross-sectional relationships between the SARM1 biomarker, clinical neuropathy scales, and nerve conduction parameters in 80 participants aged between 30 years and 60 years. The analysis was carried out after the patients were split into two groups since we discovered a significant increase in SARM1 levels following the second dose of the COVID-19 vaccination, where group A received one dose of the COVID-19 vaccine inoculation, and group B received two doses of the COVID-19 vaccine. SARM1 was correlated significantly (p < 0.05) with MNSIe and NSS in group A and showed a consistent positive correlation with the other neuropathy clinical scales in group A and group B without reaching statistical significance. Additionally, SARM1 was negatively correlated significantly (p < 0.05) with the median sensory amplitude in group A and showed a consistent negative correlation with the six other sensory and motor nerves' potential amplitude in group A and group B without reaching statistical significance. In conclusion, SARM1 showed a consistent correlation with clinical neuropathy scales and nerve conduction parameters after accounting for the influence of COVID-19 vaccination doses. [ABSTRACT FROM AUTHOR]

Abstract Introduction Generalized joint hypermobility (GJH) can be the result of several hereditary connective tissue disorders, especially Ehlers–Danlos syndrome. Cerebrovascular manifestations are among the most common complications in this disorder, and understanding their extent can help better diagnosis and prevention of hazardous events. We investigated visual evoked potential (VEP) changes in patients with GJH and compared them with healthy individuals. Methods Our case–control study included 90 patients who fulfilled the Beighton score (B score) for joint hypermobility and other 90 healthy participants. All of them went under VEP study, and the amplitude and latency of the evoked potential (P100) were compared to each other. Results The Case group had significantly higher B score (7.18 ± 0.967 vs. 1.18 ± 0.712), P100 latency (110.23 ± 6.64 ms vs. 100.18 ± 4.273 ms), and amplitude (6.54 ± 1.26 mv vs. 6.50 ± 1.29 mv) compared with the Control group, but the difference was only significant regarding B score, and P100 latency (p‐value

This study aimed to identify velocity of nerve conduction of the tibial and peroneal nerves of the lower end. This was an experimental study and the sample consisted of two groups: the experimental group (A) which consisted of 10 badminton players and their average age was 20-+70 years, regulated in training and every one of them plays with his right hand from the Jordan national badminton team players, and the second, the control group (B), who didn’t practice any physical activity, and their number was (10) who are healthy with average age (20+-60). The results revealed statistically significant differences at ( ≥α 0.05) between the variables velocity of nerve conduction of the tibial nerves and peroneal nerves for the experimental group, there were no statistically significant differences at (≥α 0.05) in the velocity of nerve conduction of the tibial nerves and peroneal nerves according to the variable of age, whereas there were statistically significant differences at ( ≥α 0.05) between the variables velocity of nerve conduction of right peroneal nerves according to the variable of years of experience, where these differences were for people who have experience of more than 5 years.

The contribution of certain occupational and personal factors to the development of carpal tunnel syndrome (CTS) is still uncertain. We investigated which specific occupational and non-occupational factors correlate with the level of clinical manifestations and work disability related to CTS. The study included 190 workers who work with a computer and have diagnosed CTS (100 men, 90 women, aged 20–65 years). Subjective experience of CTS-related impairments was assessed with the Symptom Severity Scale (SSS) and the Functional Status Scale (FSS) of the Boston Carpal Tunnel Syndrome Questionnaire (BCTQ). The objective, neural impairments were tested with electrodiagnostics (EDX), whereas CTS-related work disability data were collected from medical records. We found a high inter-correlation between BCTQ, EDX, and work disability data. These also showed high correlations with certain occupational factors (duration of computer-working in months and hours spent daily in computer-working, certain ergonomic, microclimatic, and other occupational conditions) and non-occupational factors (demographic and lifestyle factors: nutritional status, diet, smoking, alcohol consumption, and physical activity). Despite its limitations, our study has identified occupational and non-occupational risk factors that can aggravate CTS and work disability, but which can also be improved with workplace and lifestyle preventive and corrective measures. More research is needed, though, to establish the possible causal relationships and the independent influence of each of those risk factors.

Abstract Objectives The goal of this study is to measure and compare the hormonal serum levels (estrogen, progesterone, testosterone, prolactin, dihydrotestosterone [DHT]) in trigeminal neuroglia (TN) menopausal women and healthy women. Materials and Methods This cross‐sectional and case‐control study was performed in 2018 and 2019. For this study, menopausal women with confirmed TN were enrolled. Twenty‐two healthy women in the control group and 19 in the case group participated. Blood samples were taken from participants for assessment of hormonal serum levels (estrogen, progesterone, testosterone, prolactin, DHT). Data were analyzed by SPSS version 18. Mann−Whitney, T‐test, kormography test, nonmetric, χ2 test, and odds ratios have been used. Results In patients with TN, the serum level of testosterone was significantly higher (p = .036), and the serum level of prolactin (p = .016) was significantly lower. Other evaluated hormones' serum level was identical in the two groups. Patients with abnormal estrogen levels were more in the TN group in comparison with the healthy group. The abnormality of progesterone in TN patients was more in comparison to the healthy control group. Conclusions Estrogen and progesterone serum levels in TN patients are higher in comparison with the healthy group, while prolactin and testosterone serum levels are lower in the control group. Moreover, the DHE serum level is similar in both groups.

PURPOSE This study aimed to observe whether applying jogging, WBV, and PWU as warm-up exercises positively affected the neuro-physiological responses and physical fitness measurements in elite indoor and winter sports athletes. METHODS Elite bobsleigh (n=4, height; 180.2±2.93, weight; 93.5±2.41) and squash (n=5, height; 177.8±2.86, weight; 77.8±4.21) athletes were recruited. To verify the effect of the treatment, the whole body vibration (WBV), plyometric (PWU), and jogging treatment were performed for 10 minutes each week. Lactic acid, nerve conduction velocity (pre, post, 3 minutes, 5 minutes), and isokinetic test of three velocity (60, 180, 240°/sec) were measured. RESULTS There were significant differences between control, WBV, and PWU in lactic acid after the 3 min test (χ2 =9.036, p=.021), and WBV and PWU showed higher lactic acid than control. Nerve conduction velocity was different between control and PWU after the 3 min test (χ2 =8.242, p=.041), and PWU showed faster conduction velocity than control. Isokinetic strength was found to be different between control and PWU (χ2 =8.799, p=.032), and PWU showed higher average power than control. CONCLUSIONS It is considered that plyometric is a suitable warm-up exercise that can be easily applied according to harsh space and weather changes. Additionally, the test should be conducted in more sports.

Anethole is a terpenoid with antioxidant, anti-inflammatory, and neuronal blockade effects, and the present work was undertaken to study the neuroprotective activity of anethole against diabetes mellitus (DM)-induced neuropathy. Streptozotocin-induced DM rats were used to investigate the effects of anethole treatment on morphological, electrophysiological, and biochemical alterations of the sciatic nerve (SN). Anethole partially prevented the mechanical hyposensitivity caused by DM and fully prevented the DM-induced decrease in the cross-sectional area of the SN. In relation to electrophysiological properties of SN fibers, DM reduced the frequency of occurrence of the 3rd component of the compound action potential (CAP) by 15%. It also significantly reduced the conduction velocity of the 1st and 2nd CAP components from 104.6 ± 3.47 and 39.8 ± 1.02 to 89.9 ± 3.03 and 35.4 ± 1.56 m/s, respectively, and increased the duration of the 2nd CAP component from 0.66 ± 0.04 to 0.82 ± 0.09 ms. DM also increases oxidative stress in the SN, altering values related to thiol, TBARS, SOD, and CAT activities. Anethole was capable of fully preventing all these DM electrophysiological and biochemical alterations in the nerve. Thus, the magnitude of the DM-induced neural effects seen in this work, and the prevention afforded by anethole treatment, place this compound in a very favorable position as a potential therapeutic agent for treating diabetic peripheral neuropathy.

Objectives: The goal of this study is to measure and compare the hormonal serum levels (estrogen, progesterone, testosterone, prolactin, dihydrotestosterone [DHT]) in trigeminal neuroglia (TN) menopausal women and healthy women. Materials and Methods: This cross‐sectional and case‐control study was performed in 2018 and 2019. For this study, menopausal women with confirmed TN were enrolled. Twenty‐two healthy women in the control group and 19 in the case group participated. Blood samples were taken from participants for assessment of hormonal serum levels (estrogen, progesterone, testosterone, prolactin, DHT). Data were analyzed by SPSS version 18. Mann−Whitney, T‐test, kormography test, nonmetric, χ2 test, and odds ratios have been used. Results: In patients with TN, the serum level of testosterone was significantly higher (p =.036), and the serum level of prolactin (p =.016) was significantly lower. Other evaluated hormones' serum level was identical in the two groups. Patients with abnormal estrogen levels were more in the TN group in comparison with the healthy group. The abnormality of progesterone in TN patients was more in comparison to the healthy control group. Conclusions: Estrogen and progesterone serum levels in TN patients are higher in comparison with the healthy group, while prolactin and testosterone serum levels are lower in the control group. Moreover, the DHE serum level is similar in both groups. [ABSTRACT FROM AUTHOR]

Protective vs. Therapeutic Effects of Mitochondria-Targeted Antioxidant MitoTEMPO on Rat Sciatic Nerve Crush Injury: A Comprehensive Electrophysiological Analysis. Peripheral nerve injuries often result in long-lasting functional deficits, prompting the need for effective interventions. MitoTEMPO (2-(2,2,6,6-tetramethylpiperidin-1-oxyl-4-ylamino)-2-oxoethyl) triphenylphosphonium chloride) is a mitochondria-targeted antioxidant that has shown protective and therapeutic effects against pathologies associated with reactive oxygen species. This study explores the utilization of MitoTEMPO as a therapeutic and protective agent for sciatic nerve crush injuries. By employing advanced mathematical approaches, the study seeks to comprehensively analyze nerve conduction parameters, nerve excitability, and the distribution of nerve conduction velocities to gauge the potential. Forty Wistar-Albino rats were randomly divided into following groups: (I) SHAM—animals subjected to sham operation and treated intraperitoneally (i.p.) with vehicle (bidistilled water) for 14 days; (II) CI (crush injury)—animals subjected to CI and treated with vehicle 14 days; (III) MiP—animals subjected to 7 days i.p. MitoTEMPO treatment before CI (0.7 mg/kg/day dissolved in vehicle) and, only vehicle for 7 days after CI, protective MitoTEMPO; and (IV) MiT—animals i.p. treated with only vehicle for 7 days before CI and 7 days with MitoTEMPO (0.7 mg/kg/day dissolved in vehicle) after CI, therapeutic MitoTEMPO. Nerve excitability parameters were measured, including rheobase and chronaxie, along with compound action potential (CAP) recordings. Advanced mathematical analyses were applied to CAP recordings to determine nerve conduction velocities and distribution patterns. The study revealed significant differences in nerve excitability parameters between groups. Nerve conduction velocity was notably reduced in the MiP and CI groups, whereas CAP area values were diminished in the MiP and CI groups compared to the MiT group. Furthermore, CAP velocity was lower in the MiP and CI groups, and maximum depolarization values were markedly lower in the MiP and CI groups compared to the SHAM group. The distribution of nerve conduction velocities indicated alterations in the composition of nerve fiber groups following crush injuries. In conclusion, postoperative MitoTEMPO administration demonstrated promising results in mitigating the detrimental effects of nerve crush injuries. [ABSTRACT FROM AUTHOR]

Copyright of Archives of Industrial Hygiene & Toxicology / Arhiv za Higijenu Rada I Toksikologiju is the property of Sciendo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Chronic inflammatory demyelinating polyneuropathy (CIDP) is a rare immune-mediated disease in which an abnormal immune response causes demyelination and damage to the axons of peripheral nerves. This study is a systematic review of the literature. The screening of the abstracts was performed on the abstrackrBeta web-based software platform. The etiology, pathogenesis, modern methods of CIDP treatment, as well as the economic consequences of the spread of the disease, reflected in the scientific literature, are considered. Forty five 45 complete texts and nineteen conference procedures were found on the study of disease transmission n 9, humanistic burden n 7, current treatment n 40, and financial burden n 8 of CIDP. Epidemiological study have appeared the frequency and predominance of 0.2 1.6 and 0.8 8.9 per 100,000, depending on topography and symptomatic criteria. Six main types of therapy have been reported in publications on modern treatment methods: intravenous immunoglobulins, subcutaneous immunoglobulins, corticosteroids, plasmapheresis, immunosuppressants, and immunomodulators. According to the analyzed data, indications for the choice between these methods of treatment, as well as dosage regimens and frequency of use, have not been determined. Thus, CIDP is an autoimmune disease that requires constant monitoring and correction of therapy if necessary. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Chinese Institute of Food Science & Technology is the property of Journal of Chinese Institute of Food Science & Technology Periodical Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To evaluate the efficacy of focused extracorporeal shockwave therapy for symptoms and function in patients with moderate-to-severe carpal tunnel syndrome. Design: A single-blind randomized controlled trial. Subjects: Twenty-four outpatients with moderate-to-severe carpal tunnel syndrome. Methods: Patients were randomly allocated into 2 groups: a focused extracorporeal shockwave therapy group and a control group. The focused extracorporeal shockwave therapy group received conservative treatment in addition to focused extracorporeal shockwave therapy with an energy flux density ranging from 0.01 to 0.15 mJ/mm2, a frequency of 4–5 Hz, and 1500 pulses per session once a week for a total of 3 sessions. The control group received only conservative treatment, which comprised gliding exercises for carpal tunnel syndrome, a night wrist splint, and lifestyle modification. The Thai version of the Boston Carpal Tunnel Questionnaire (T-BCTQ), a nerve conduction study, and ultrasonography of the median nerve cross-sectional area were performed before treatment and at 3 and 6 weeks after baseline. Results: The T-BCTQ symptom and function scores had significantly decreased in both groups, favouring focused extracorporeal shockwave therapy at all time-points. In addition, distal sensory and motor latency were significantly different between the groups at 3 weeks from baseline. Conclusion: Focused extracorporeal shockwave therapy plus conservative treatment effectively provided short-term improvement in symptoms, hand function, and nerve conduction in patients with moderate-to-severe carpal tunnel syndrome compared with conservative treatment alone.

Objective To investigate the effect of Traditional Chinese Medicine (TCM) collapse stains combined with ultrasound drug penetration therapy in the treatment of diabetic peripheral neuropathy (DPN)in the elderly. Methods Totally 90 elderly patients with DPN were randomly divided into observation group (n=45) and control group (n=45) . All patients received oral administration of Mecobalamin tablets combined with ultrasound drug penetration therapy, and patients in the observation group were given Traditional Chinese Medicine collapse stains additionally. Both two groups received 14-day course of treatment. The total clinical effective rate, clinical symptom score, sensory nerve conduction velocity (SNCV) and motor nerve conduction velocity (MNCV) of median nerve and common peroneal nerve were observed and compared between two groups. Results The total effective rate of the control group was 77. 78%(35/45), and total clinical effective rate of the treatment group was 93. 33%(42/45), with a significant difference (P＜0. 05). The clinical symptom scores of the two groups were significantly decreased after intervention(P＜0. 01), and clinical symptom score of the observation group was lower than that of the control group(P＜0. 01). MCV and SCV values of median nerve and common peroneal nerve in the two groups were significantly increased after intervention (P＜0. 01), and MNCV and SNCV values in the observation group were higher than those in the control group (P＜0. 01). Conclusion TCM collapse stains combined with ultrasound drug penetration therapy can effectively relieve the clinical symptoms of elderly patients with DPN, improve the motor and sensory conduction function of peripheral nerves, and the combined treatment can effectively improve the clinical treatment effect. (目的 探讨中药塌渍联合超声药物导入治疗老年糖尿病患者周围神经病变(DPN)的效果。方法 采用随机数字表将90例老年糖尿病周围神经病变(DPN)患者随机分为观察组(n=45)和对照组(n=45)。对照组给予甲钴胺片口服联合超声药物导入治疗, 观察组在对照组的基础上联合中药塌渍进行治疗, 两组均以14d为1个疗程, 连续治疗2个疗程。评估和对比两组临床总有效率、临床症状积分、治疗前后正中神经和腓总神经的感觉神经传导速度(SNCV)与运动神经传导速度(MNCV)的差异。结果 观察组总有效率为93. 33%(42/45), 高于对照组的77. 78%(35/45), 差异有统计学意义(P＜0. 05)。治疗后, 两组临床症状总积分较治疗前下降(P＜0. 01), 且观察组临床症状总积分下降幅度较对照组明显, 差异有统计学意义(P＜0. 01)。治疗后, 两组患者MNCV和SNCV数值较治疗前升高(P＜0. 01); 与对照组相比, 观察组MNCV和SNCV数值升高幅度优于对照组, 差异有统计学意义(P＜0. 01)。结论 中药塌渍治疗联合超声药物导入疗法可以有效缓解老年DPN患者临床症状和体征, 改善周围神经的运动和感觉传导功能, 联合治疗能有效提高临床治疗效果。)

At times electrodiagnostic medical consultants (EMCs) are asked to perform studies in both a neutral position, and then again after the patient is in a provocative position that exacerbates symptoms, to assess for measurable electrophysiologic changes. While this approach might seem initially appealing, particularly when standard studies are not effective at diagnosis, empiric studies in several conditions have been unimpressive. Studies in median neuropathy at the wrist, thoracic outlet syndrome, piriformis syndrome, and radial tunnel syndrome have failed to demonstrate reproducible changes in nerve conduction studies in positions that exacerbate symptoms. Furthermore, there is lack of a plausible pathophysiologic mechanism for producing both measurable and rapidly reversible electrophysiologic changes after just a few minutes, or less, of compression. Axon loss and demyelination would not be rapidly reversible, and positional changes of 2 min or less (the durations generally studied) would be insufficient to produce measurable nerve ischemia. Last, we have gained a greater appreciation for how much nerves move within limbs with changes in joint position; this movement can lead to misleading changes in nerve conduction studies. It is thus appropriate to conclude that testing nerve conduction in provocative or symptomatic positions adds no value to electrodiagnostic testing. [ABSTRACT FROM AUTHOR]

In this paper, we consider an integro-differential model of nerve conduction which presents the propagation of impulses in the nerve’s membranes. First, we approximate the original problem via cellular nonlinear networks (CNNs). The dynamics of the CNN model is investigated by means of local activity theory. The edge of chaos domain of the parameter set is determined in the low-dimensional case. Computer simulations show the bifurcation diagram of the model and the dynamic behavior in the edge of chaos region. Moreover, stabilizing control is applied in order to stabilize the chaotic behavior of the model under consideration to the solutions related to the original behavior of the system.

Acute canine polyradiculoneuritis (ACP) is a common peripheral neuropathy in dogs, and is generally self-limiting and benign. Electrodiagnostic (EDX) tests are typically performed after 7–10 days. Delaying the definitive diagnosis may hamper the treatment of other causes of acute weakness, which may require specific treatments and may carry different prognoses. This retrospective multicenter study aims to assess whether EDX performed within the first 6 days of clinical signs onset can detect alterations indicative of ACP, and aims to characterize the most prevalent alterations. A total of 71 dogs with suspected ACP were retrospectively analyzed and classified into two groups based on EDX timing: early group (EG, 1–6 days after symptom onset) and late group (LG, 7–15 days after symptom onset). In our study, no significant differences were found between the two groups in motor nerve conduction studies (MNCSs) and F-wave analysis, indicating that EDX is able to demonstrate abnormalities even in the first 6 days from onset. Although the LG showed significantly greater degrees of electromyographic (EMG) alterations compared to the EG, frequent muscle alterations were still observed in the EG group. These findings support the use of EDX in patients with suspected ACP within the first 6 days from the clinical onset. Prompt neurophysiological examinations for suspected ACP patients can be performed effectively and can help allow for early diagnosis and facilitate appropriate treatment.

Abstract Background Suspected immune‐mediated polyneuropathy has been increasingly reported in cats, especially in the last decade, but the condition remains poorly understood. Objectives Refine the clinical description and review the classification of this condition based on electrodiagnostic investigation and evaluate the benefit of corticosteroid treatment and L‐carnitine supplementation. Animals Fifty‐five cats presented with signs of muscular weakness and electrodiagnostic findings consistent with polyneuropathy of unknown origin. Methods Retrospective, multicenter study. Data from the medical records were reviewed. The owners were contacted by phone for follow‐up at the time of the study. Results The male‐to‐female ratio was 2.2. The median age of onset was 10 months, with 91% of affected cats being

Introduction: Thyroid hormones are not essential for maintenance of vital functions of life, their deficiency causes severe deficit in mental and physical growth and extreme decrease in body metabolism. Aim: To study nerve conduction parameters in primary hypothyroidism patients. Method: study conducted on 84 patients(42 patients in each case group and control group) aged between 20 to 45 years at Department of Medicine, S.M.S. Medical Collage, Jaipur, Rajasthan from May 2020 onwards for one year or till the sample size was achieved and two months for data compilation and analysis. Cases and control fulfilling inclusion and exclusion criteria were taken into study. The study access nerve conduction parameters in primary hypothyroidism patients. Result: mean age for case group was 38.09 years and for control group it was 34.9 years(p >0.05). There was significant difference seen inFT3, FT4, TSH and anti TPO test. Significant difference in FT3 in abnormal nerve conduction and normal nerve conduction patients, FT4, TSH and anti TPO was found non-significant in abnormal nerve conduction and normal nerve conduction patients. Conclusion: Performing electrophysiological studies early in the course of the disease in hypothyroid patients is suggested, in order to detect nervous system involvement. [ABSTRACT FROM AUTHOR]

Purpose: Neuroimaging and electrodiagnostic studies are used to evaluate the changes in the spinal cord after trauma, both for clinical and research purposes. The aim of the present study was to find a correlation between the MRI and electrodiagnostic testing for acute traumatic spinal cord injury (SCI) over different points in time. Methods: Thirty-five patients with acute SCI presenting within 48 h of injury and completing a minimum of 6 months of regular follow-up comprised the study population. Patients were examined clinically for neurological involvement as per international guidelines. Magnetic resonance imaging (MRI) spine and electrodiagnostic testing of both lower limbs [two motor (tibial and peroneal) and one sensory (sural) nerve] and five muscles (Iliopsoas, Vastus medialis, Tibialis anterior, Gastrocnemius, and Extensor hallucis longus (EHL)] were done at admission, 3 and 6 months. Results: Quantitative MRI parameters [maximum spinal cord compression (MSCC), maximum canal compromise (MCC), and lesion length (LL)] showed a significant correlation to motor nerve conduction velocity and sensory nerve conduction velocity at all points in time. Electromyography of tested muscles at admission showed a significant correlation (Spearman's correlation test) with MRI quantitative parameters (-0.818 to -0.510); stenosis (-0.564 to -0.347) except right EHL for peak to peak amplitude; and disk herniation (-0.427 to -0.339) except tibialis anterior for recruitment of motor unit potential (MUP) and iliopsoas, right gastrocnemius, and EHL for peak to peak amplitude. This correlation remained significant even at 3 and 6 months post-acute SCI. Conclusion: The quantitative MRI parameters, along with a few of the qualitative parameters, show a significant correlation with electrodiagnostic features at different points in acute traumatic SCI. [ABSTRACT FROM AUTHOR]

Background: Nerve conduction studies (NCS) are an important tool for the diagnosis of neuromuscular diseases. In NCS, factors such as temperature, age, sex, body metrics, and recording technique can affect the values. There are currently no universal normative data. The standardization of NCS is essential for the reliable and consistent identification of pathologic conditions for each laboratory. Aim: We wanted to obtain normal values of our electrophysiology laboratory for the Turkish population. Materials and Methods: The volunteer group consisted of 120 people aged 15–74 years. They were distributed into 12 subgroups according to their age. Each subgroup included five male and five female subjects. Age, sex, weight, height, profession, body mass index, and hand preferences were recorded. Median and ulnar NCS were performed by two experienced clinical neurophysiologists. The skin temperature was corrected to 35.5°C, which was the highest measured value. Results: Age 50 years was used for the cutoff point for nerve conduction velocities (NCVs) because there was no significant difference within the groups aged ≥50 years and 50 years were significantly different. NCVs and action potential amplitudes were higher in females than males in both age groups. Women had higher NCV values and action potential amplitudes of motor and sensory fibers. Conclusion: Age, temperature, and sex are important factors that affect NCS. We believe this study will provide normal values for future studies, especially in the Turkish population.

Patients with peripheral neuropathy with type 2 diabetes mellitus (T2DM) are more likely to have functional impairments. Recently, the gene for serum sterile alpha and toll/interleukin receptor motif-containing protein 1 (SARM1), which may contribute to the pathogenesis of Wallerian degeneration, was discovered in mice models of peripheral neuropathy. We set out to assess serum SARM1’s activity as a potential biomarker for the early identification of diabetic peripheral neuropathy in T2DM patients while also examining the impact of the COVID-19 vaccine on SARM1 levels. We assessed the cross-sectional relationships between the SARM1 biomarker, clinical neuropathy scales, and nerve conduction parameters in 80 participants aged between 30 years and 60 years. The analysis was carried out after the patients were split into two groups since we discovered a significant increase in SARM1 levels following the second dose of the COVID-19 vaccination, where group A received one dose of the COVID-19 vaccine inoculation, and group B received two doses of the COVID-19 vaccine. SARM1 was correlated significantly (p < 0.05) with MNSIe and NSS in group A and showed a consistent positive correlation with the other neuropathy clinical scales in group A and group B without reaching statistical significance. Additionally, SARM1 was negatively correlated significantly (p < 0.05) with the median sensory amplitude in group A and showed a consistent negative correlation with the six other sensory and motor nerves’ potential amplitude in group A and group B without reaching statistical significance. In conclusion, SARM1 showed a consistent correlation with clinical neuropathy scales and nerve conduction parameters after accounting for the influence of COVID-19 vaccination doses.

Background: Suspected immune‐mediated polyneuropathy has been increasingly reported in cats, especially in the last decade, but the condition remains poorly understood. Objectives: Refine the clinical description and review the classification of this condition based on electrodiagnostic investigation and evaluate the benefit of corticosteroid treatment and L‐carnitine supplementation. Animals: Fifty‐five cats presented with signs of muscular weakness and electrodiagnostic findings consistent with polyneuropathy of unknown origin. Methods: Retrospective, multicenter study. Data from the medical records were reviewed. The owners were contacted by phone for follow‐up at the time of the study. Results: The male‐to‐female ratio was 2.2. The median age of onset was 10 months, with 91% of affected cats being <3 years of age. Fourteen breeds were represented in the study. The electrodiagnostic findings supported purely motor axonal polyneuropathy. Histological findings from nerve biopsies were consistent with immune‐mediated neuropathy in 87% of the tested cats. The overall prognosis for recovery was good to excellent, as all but 1 cat achieved clinical recovery, with 12% having mild sequelae and 28% having multiple episodes during their lifetime. The outcome was similar in cats with no treatment when compared with cats receiving corticosteroids or L‐carnitine supplementation. Conclusions and Clinical Importance: Immune‐mediated motor axonal polyneuropathy should be considered in young cats with muscle weakness. This condition may be similar to acute motor axonal neuropathy in Guillain‐Barré syndrome patients. Based on our results, diagnostic criteria have been proposed. [ABSTRACT FROM AUTHOR]

Background and Objective: To report the role of nerve conduction study (NCS) in diagnosis, monitoring, and prognosis of Hansen’s disease (HD). Materials and Methods: In a hospital‑based prospecive observational study, the patients with HD as per World Health Organization (WHO) criteria were included; muscle wasting power, reflexes, and sensations were recorded. Motor NCS of median, ulnar, and peroneal nerves and sensory NCS of ulnar, median, and sural nerves were recorded. Disability was graded using WHO grading scale. The outcome was assessed after 6 months using modified Rankin scale. Results: In the present study, 38 patients with a median age of 40 (15–80) years and five females were included. The diagnosis was tuberculoid in seven, borderline tuberculoid in 23, borderline lepromatous in two, and borderline in six patients. The disability was grade 1 and 2 in 19 patients each. Out of 480 nerves studied, NCS was normal in 139 sensory (57.4%) and 160 (67.2%) motor nerves. NCSs were axonal in seven sensory and eight motor nerves, demyelinating in three nerves, and mixed in one in seven patients who had lepra reaction. NCS findings did not correlate with disability (p = 1.0) or outcome (0.304) and provided additional information in 11 nerves (seven patients). Peripheral nerves were enlarged in 79. NCSs were normal in 32 (29.90%) in thickened nerves. Conclusion: In HD, NCS abnormalities correlated with respective sensory or motor abnormality but related with neither disability nor the outcome. [ABSTRACT FROM AUTHOR]

Aim: This study aimed to investigate the rate of carpal tunnel syndrome (CTS) and polyneuropathy in patients with new-diagnosed hypothyroidism and the relationship between median nerve conduction and the cross-sectional area of the median nerve by ultrasonography. Material and Methods: It was a prospective, cross-sectional and case-control study. This study included thirty-five new-diagnosed hypothyroidism cases and thirty-five healthy controls. Bilateral sensory and motor nerve potentials were noted in the lower and upper extremities. The cross-sectional area of the median nerve was examined at the entrance of the CT with the axial plan by ultrasonography. The relationship between the cross-sectional areas of the median nerve and nerve conduction parameters was investigated. Results: CTS was determined electrophysiologically in 8 (22.9%) patients. The control group had no CTS. There was no significant electrophysiological finding to support polyneuropathy in the patients. The cross-sectional areas of the median nerve were higher in the patient group but did not reach statistically significant (p>0.05). There was a positive correlation between the right and left cross-sectional area of median nerves and body mass index (BMI) (p<0.05). Conclusion: The rate of CTS is high in patients with newly diagnosed hypothyroidism. There is a positive correlation between crosssectional nerve areas and BMI. There was no significant correlation between nerve conductions and median nerve ultrasonographic cross-sectional areas. [ABSTRACT FROM AUTHOR]

Introduction: Introduction: Nerve Conduction Study (NCS) are most commonly used in neurophysiological laboratories not only for the understanding of normal peripheral nerve function and structure but also in relation to various diseases. Peripheral neuropathies are unfavorable consequences of radiation treatment. Tissue changes due to Radiation Exposure result in inflammation and fibrosis that affect the peripheral nerve and lead to peripheral neuropathies. Hence we have undertaken this study to observe effect of radiation exposure on peripheral nerve conduction study parameters in Radiologic Technologists of our institutions and compared the nerve conduction study with healthy individuals. Material and methods: Present study is a case control cross-sectional analytic prospective hospital-based study. In present study a sum of 60 individuals were selected, of which 30 were Radio-logic Technologists (study group/cases) who had a history of occupational exposure to ionizing radiations and 30 were age and sex matched normal healthy individuals (controls). Motor Nerve conduction study (MNCS) parameters for sensory and motor were recorded in Median, Ulnar and Radial nerves on both right and left Upper extremities and data was recorded. We found that the nerve conduction velocities of all the motor and sensory nerves were significantly reduced in radiologic technologists compared to healthy subjects. Results and discussion: We also found reduced CMAP amplitude (significant in Ulnar, and Radial) and SNAP amplitude (significant in Median, Ulnar and Radial nerves) along with prolonged motor distal latencies (significant in Median, Ulnar and Tibial nerves) and sensory distal latencies (significant in Median, Ulnar and Radial nerves) among radiological technologists compared to healthy individuals. Conclusion: Present study depicting that ionizing radiations are harmful to all the body tissues including the peripheral nerves. Radiations appear to cause both demyelination and axonal loss. [ABSTRACT FROM AUTHOR]

Peripheral neuropathy is a common complication of type 2 diabetes mellitus (T2DM) that results in nerve conduction abnormalities. This study aimed to investigate the parameters of nerve conduction in lower extremities among T2DM patients in Vietnam. A cross-sectional study was conducted on 61 T2DM patients aged 18 years and older, diagnosed according to the American Diabetes Association's criteria. Data on demographic characteristics, duration of diabetes, hypertension, dyslipidemia, neuropathy symptoms, and biochemical parameters were collected. Nerve conduction parameters were measured in the tibial and peroneal nerves, including peripheral motor potential time, response amplitude M, and motor conduction speed, as well as sensory conduction in the shallow nerve. The study found a high rate of peripheral neuropathy among T2DM patients in Vietnam, with decreased conduction rate, motor response amplitude, and nerve sensation. The incidence of nerve damage was highest in the right peroneal nerve and left peroneal nerve (86.7% for both), followed by the right tibial nerve and left tibial nerve (67.2% and 68.9%, respectively). No significant differences were found in the rate of nerve defects between different age groups, body mass index (BMI) groups, or groups with hypertension or dyslipidemia. However, a statistically significant association was found between the rate of clinical neurological abnormalities and the duration of diabetes (p < 0.05). Patients with poor glucose control and/or decreased renal function also had a higher incidence of nerve defects. The study highlights the high incidence of peripheral neuropathy among T2DM patients in Vietnam and the association between nerve conduction abnormalities and poor glucose control and/or decreased renal function. The findings underscore the importance of early diagnosis and management of neuropathy in T2DM patients to prevent serious complications. [ABSTRACT FROM AUTHOR]

Background: One controversial question in Carpal Tunnel Syndrome (CTS) diagnosis is whether magnetic resonance imaging (MRI) and Ultrasound (US) imaging tools have any relationship with electrodiagnostic (EDX) study. The objective of this study is to determine the possible correlation between MRI and US measurements with EDX parameters. Methods: Both US and MRI of the median nerve were simultaneously performed in 12 confirmed CTS wrists, at two levels of forearm distal fold (proximal) and the hook of the hamate (distal), to measure various anatomic parameters of the nerve. EDX parameters of median motor distal latency (DL) and median sensory proximal latency (PL) were evaluated in milliseconds. Results: Nerve cross-sectional area (CSA), measured by MRI, correlated with sensory PL at distal level (p = 0.015). At proximal level MRI, nerve width and width to height ratio also correlated with motor DL (p = 0.033 and 0.021, respectively). Median nerve CSA proximal to distal ratio correlated with sensory PL (p = 0.028) at MRI. No correlation was found between US and EDX measurements. Conclusions: Median nerve MRI measurement of nerve CSA at hook of the hamate (distal) level or CSA proximal to distal ratio correlated with EDX parameter of sensory PL. On the other hand, nerve MRI width and width to height ratio at distal level correlated with motor DL in EDX. Level of Evidence: Level III (Diagnostic) [ABSTRACT FROM AUTHOR]

This study aimed to investigate the effects of 10-week aerobic and unilateral lower extremity resistance training on nerve conduction velocity and amplitude of sensory and motor nerves in diabetic patients with neuropathy. This clinical trial was conducted on twenty women and men (aged 30--60 years old) with diabetic neuropathy. Participants were randomly assigned to one of the two groups: an exercise group (EG; n = 10) and a control group (CG; n = 10). The EG performed a 10-week programme with one session of aerobic exercises (40% to 70% of HR reserve), supplemented with one session of specific lower extremity resistance exercises (60--90 min/day) on the same day for four days per week. The CG subjects performed their regular daily activities. The nerve conduction velocity, amplitude of sensory and motor nerves and glycosylated haemoglobin A1c were measured before and after the intervention. The repeated-measures ANOVA showed a significant increase in the conduction velocity of the sural sensory nerve as well as the peroneal motor nerve (p < 0.01, p < 0.01). The changes in the conduction velocity of the tibial nerve were similar when compared to the control group (p > 0.05). A significantly greater decrease in glycosylated haemoglobin was also observed in the EG group (p < 0.01). Performing 10 weeks of aerobic and specific unilateral lower extremity exercises can improve the function of sensory and motor nerves and improve symptoms in diabetic patients with neuropathy. Given the limited studies in this area, the exact mechanisms of this performance improvement need further examination. [ABSTRACT FROM AUTHOR]

The action potential (AP) conduction in nerve fibers plays a crucial role in transmitting nociceptive information from the periphery to the cerebral cortex. Nerve AP conduction inhibition possibly results in analgesia. It is well-known that many analgesics suppress nerve AP conduction and voltage-dependent sodium and potassium channels that are involved in producing APs. The compound action potential (CAP) recorded from a bundle of nerve fibers is a guide for knowing if analgesics affect nerve AP conduction. This entry mentions the inhibitory effects of clinically used analgesics, analgesic adjuvants, and plant-derived analgesics on fast-conducting CAPs and voltage-dependent sodium and potassium channels. The efficacies of their effects were compared among the compounds, and it was revealed that some of the compounds have similar efficacies in suppressing CAPs. It is suggested that analgesics-induced nerve AP conduction inhibition may contribute to at least a part of their analgesic effects.