1.A family with Andersen-Tawil syndrome induced by a new mutation Q164R in the KCNJ2 gene and previous literature review
Yingying WANG ; Wei ZHANG ; Xueli CHANG ; Hao LI ; Junhong GUO
Chinese Journal of Neurology 2018;51(3):187-191
Objective To discuss clinical characteristics of a family with Andersen-Tawil syndrome, test and analyze the mutation of their pathogenic gene, and to discover the dependency of genotype and phenotype by searching every reported Andersen-Tawil syndrome patient in all accessible literature worldwide.Methods In December 2nd,2016,two patients in the Department of Neurology,the First Hospital of Shanxi Medical University, received medical history data collection and relevant examinations.PCR and DNA sequencing were applied to detect ion channel diseases related genes such as SCN4A, CACNA1S, KCNJ2, KCNE3, KCNE4, KCNJ18, KCNJ5.Random selection of 200 healthy volunteers from Shanxi Medical University served as normal controls.Andersen-Tawil syndrome cases,which are accorded with statistical criteria in published literature, were collected.Their genotype and phenotype were analyzed and summarized.Results Clinical manifestation of the pre-confirmed patient and his father was accorded with diagnostic criteria of Andersen-Tawil syndrome.Prominent characteristics included ventricular arrhythmia, periodic paralysis, and dysmorphic features.The two patients had renal tubular acidosis.One of these two patients also had increased level of renin-angiotensin-aldosterone.New mutation Q164R in the KCNJ2 gene was found in these two patients.There was no report in any literature or any database that we could find about this gene mutation at present.The mutation was not found among other healthy family members and 200 healthy controls.In this study,we referenced 55 samples of Andersen-Tawil syndrome in 12 articles,in which 54 samples are KCNJ2 gene mutation,one is KCNJ5 gene mutation.We concluded a negative correlation between the onset age of periodic paralysis and the onset age of cardiac symptoms after a statistical analysis of these 54 patients with KCNJ2 gene mutation(rs=-0.698 1,P=0.005 5).The incidence of cardiac symptoms in patients of Andersen-Tawil syndrome with periodic paralysis was reduced(33.33%(14/42)vs 9/11, χ2=6.485,P=0.011).Men(96.00%(24/25))were found more likely to have periodic paralysis than women(65.52%(19/29); χ2=7.691,P=0.006).Women (64.29%(18/28))were found more likely to have cardiac symptoms than men(20.00%(5/25); χ2=10.545,P=0.001).Conclusions New mutation Q164R in the KCNJ2 gene is the cause of Andersen-Tawil syndrome,which could cause renal tubular acidosis.We speculate that the gene may play a role in the way of potassium regulating aldosterone.For women with the KCNJ2 gene mutation and the late-onset of periodic paralysis,it is important to take drug or manual intervention as early as possible to prevent the occurrence of cardiogenic adverse events.
2.Paramyotonia congenita and hypokalemic periodic paralysis in a family with mutation p.R1448H in α-subunit type Ⅳ of voltage gated sodium channel gene
Xueqi PAN ; Wei ZHANG ; Xueli CHANG ; Jing ZHANG ; Huaxing MENG ; Junhong GUO
Chinese Journal of Neurology 2019;52(6):457-462
Objective Through description of the clinical,electrophysiological,pathological and gene sequencing characteristics of a family diagnosed as paramyotonia congenita and hypokalemic periodic paralysis to broaden the understanding of skeletal muscle channel disease and provide the reference for clinical diagnosis.Methods The clinical manifestation,electromyography,muscle pathology and gene sequencing of a family diagnosed as paramyotonia congenita and hypokalemic periodic paralysis in the First Hospital of Shanxi Medical University in October 2017 were collected.Results The proband represented myotonia and episodic muscle weakness,and the manifestations of different patients of the family were varied,including myotonia,episodic muscle weakness or myotonia and episodic muscle weakness.The electromyography of the proband showed myotonic potential,and the compound muscle action potential decreased by 36% in 40 minutes after exercise in the long exercise test in cold environment (11 ℃).The gene sequencing showed α-subunit type Ⅳ of voltage gated sodium channel (SCN4A) gene p.R1448H mutation.Conclusions The proband presented with paramyotonia congenita and hypokalemic periodic paralysis.Family clinical manifestations suggested phenotypic heterogeneity.The long exercise text in cold environment (11 ℃) confirmed the diagnosis of the proband as paramyotonia congenita and hypokalemic periodic paralysis.Family gene sequencing showed that the mutation of p.R1448H in SCN4A gene was the pathogenic gene mutation site of paramyotonia congenita and hypokalemic periodic paralysis.
3.The application of Raman spectroscopy in male reproduction diagnosis
Xueli LIU ; Chunxin CHANG ; Chenming XU
Chinese Journal of Laboratory Medicine 2019;42(7):498-502
The limited method demands for new technology in the management of male infertility. Raman spectroscopy is a rapid and sensitive non-invasive diagnosing technology. Raman spectroscopy was able to obtain Raman spectra from individual human sperm cells and allows for the comparison of their biochemical components, DNA and mitochondrial structure as well as epigenetic changes. This review provided an overview of the principle of each major types and discussed the progress in clinical application , indicating the potential of Raman spectroscopy as an valuable addition in assessing the quality of sperm cells for in vitro fertilization.
4.Neuronal intranuclear inclusion disease presented with stroke-like onset: a case report
Huifen WANG ; Guanxi LI ; Xiaomin PANG ; Juan WANG ; Rongjuan ZHAO ; Xueli CHANG ; Junhong GUO ; Wei ZHANG
Chinese Journal of Neurology 2023;56(12):1414-1418
Neuronal intranuclear inclusion disease (NIID) is a neurodegenerative disease, characterized by eosinophilic transparent inclusions in the central and peripheral nervous systems, and internal organs. NIID clinical characteristics are varied, including cognitive impairment, muscle weakness, episodic symptoms, movement disorders and autonomic dysfunction. This article reports a patient with NIID who manifested with episodes of aphasia, dysgraphia and dyslexia without fever, headache, nausea and vomiting confirmed by genetic testing. The patient was a 62-year-old female with acute onset who was diagnosed with transient ischemic attack. This article aims to improve the knowledge of NIID with stroke-like onset by this case presentation and avoid misdiagnosis.
5.Anti-neurofascin 186 antibody associated acute immune sensory polyradiculopathy: a case report and review of literature
Juan WANG ; Xueli CHANG ; Xiaomin PANG ; Guilian WANG ; Junhong GUO ; Wei ZHANG
Chinese Journal of Neurology 2023;56(3):278-285
Objective:To describe the clinical features of a patient of anti-neurofascin 186 (NF186) antibody associated acute immune sensory polyradiculopathy (AISP), and enhance understanding of AISP/chronic immune sensory polyradiculopathy (CISP).Methods:The clinical characteristics, diagnosis and treatment of a domestic AISP patient with NF186 antibody positive admitted to the First Hospital of Shanxi Medical University in December 2021 were summarized, and the previously reported cases of AISP/CISP were systematically reviewed.Results:The patient was a 62-year-old male with acute onset. The clinical manifestations included severe sensory ataxia, increased protein in cerebrospinal fluid, no response to stimulation of the central segment of somatosensory evoked potentials (SEP), normal sensory and motor nerve conduction, and positive serum anti-NF186 antibody (1∶32). After glucocorticoid treatment, the clinical symptoms and SEP were significantly improved. The drug was stopped for 2 months, and there was no recurrence. There were 23 cases of AISP and CISP with complete data reported in the literature (including this patient). The age of onset was (54.7±17.7) years, and the ratio of male to female was 1.88. Three patients with acute onset were classified as AISP. A total of 95.7% (22/23) of patients showed sensory ataxia without limb weakness, 95.0% (19/20) of patients showed prolonged cortical potential latency or even no response, and 95.5% (21/22) of patients showed increased cerebrospinal fluid protein in varying degrees, and nerve root thickening or abnormal enhancement was not common. All 10 patients receiving immunotherapy responded to corticosteroids or intravenous immune globulin. Only 6 AISP/CISP articles reported screening for anti-ganglioside antibodies or Ranvier′s node-paranodal region-related antibodies, and no positive NF186 antibodies were reported. All the 3 patients with AISP had some characteristics of CISP/chronic inflammatory demyelinating polyradiculoneuropathy, and there was no significant difference between AISP and CISP patients in clinical features except the mode of onset.Conclusions:NF186 antibody could cause AISP, which presents as acute onset sensory ataxia. AISP is responsive to glucocorticoid therapy. Except for the mode of onset, AISP and CISP are difficult to distinguish from clinical, electrophysiological, pathological aspects and pathogenic antibodies, so they may be two different manifestations of the same disease.
6.Optic neuritis in Guillain-Barré syndrome: a case report and literature review
Feng LIANG ; Dan LIU ; Juan WANG ; Xueli CHANG ; Junhong GUO ; Wei ZHANG
Chinese Journal of Neurology 2023;56(3):292-297
Objective:To summarize the clinical characteristics of patients with Guillain-Barré syndrome (GBS) complicated with optic neuritis (ON).Methods:The clinical data of a patient with GBS complicated with ON, who admitted to the Department of Neurology, the First Hospital of Shanxi Medical University in December 2021, were collected, including demographic characteristics, clinical symptoms and signs, laboratory and electrophysiological data, and results of fundus color films. The patients with GBS complicated with ON reported in the literature were also reviewed.Results:A 40-year-old female patient with GBS was diagnosed by the results of electromyography and cerebrospinal fluid tests combining with the history and signs, who was treated with intravenous immunoglobulin on the 3rd day after onset. On the 8th day, her muscle strength improved significantly. However, on the 12th day, the visual field darkened, and on the 19th day, the vision decreased significantly (oculus dexter visual acuity 0.2, oculus sinister visual acuity 0.1 +1) with bilateral papilloedema, a relative afferent pupillary defect and delayed P100 response of the visual evoked potential. Obvious abnormality was not noted in optic nerve magnetic resonance imaging. Thus ON was diagnosed and treated with pulse methylprednisolone therapy. After 8 days of treatment, the visual acuity was completely recovered and there was no abnormality in the ocular fundus. A total of 28 cases of GBS complicated with ON (including the present patient) were reported in the literature. The age of onset was mostly 20-60 years, and there was no gender preference. Mycoplasma pneumoniae was the most common premorbid pathogen and was identified in 7 of the 10 cases in which the causative agent was described. ON usually involved both sides, and 21 of 28 patients had bilateral optic nerves involved. GBS preceded ON or both occurred simultaneously in the majority of patients; GBS preceded ON in 14 of 28 patients, and both occurred simultaneously in 10 of 28 patients. All patients responded well to immunotherapy, and vision was completely recovered in 20 patients. Conclusions:GBS complicated with ON is rare. Attention should be paid to the loss of vision in patients with GBS. Relevant examinations should be completed as soon as possible and immunotherapy should be given.
7.CGG Repeat Expansion in NOTCH2NLC Causing Overlapping Oculopharyngodistal Myopathy and Neuronal Intranuclear Inclusion Disease With Diffusion Weighted Imaging Abnormality in the Cerebellum
Jing MA ; Huiqiu ZHANG ; Bing MENG ; Jiangbo QIN ; Hongye LIU ; Xiaomin PANG ; Rongjuan ZHAO ; Juan WANG ; Xueli CHANG ; Junhong GUO ; Wei ZHANG
Journal of Clinical Neurology 2024;20(6):580-590
Background:
and Purpose CGG repeat expansion in the 5' untranslated region (5'UTR) of the Notch 2 N-terminal-like C gene (NOTCH2NLC) has been associated with neuronal intranuclear inclusion disease (NIID) and oculopharyngodistal myopathy type 3 (OPDM3). Few OPDM3 patients have been reported. This report describes two OPDM3 patients with novel imaging findings who presented the typical features of NIID, and reviews all OPDM3 cases available in the literature.
Methods:
The available clinical, imaging, and pathological information was reviewed and investigated. CGG repeat expansion in the 5'UTR of NOTCH2NLC was tested using the repeatprimed polymerase chain reaction (PCR), followed by the fluorescence amplicon-length PCR to determine the number of CGG repeats.
Results:
Our two OPDM3 patients and most patients reported in the literature developed the typical clinical characteristics of NIID, including leukoencephalopathy, peripheral neuropathy, cognitive deterioration, pigmentary retinopathy, ataxia, tremor, acute encephalitis-like episodes, pigmentary retinopathy, miosis, and sensorineural hearing loss. In addition to typical imaging findings of NIID, our two patients exhibited diffusion weighted imaging (DWI) hyperintensities in the middle cerebellar peduncles, which have not been described previously. Muscle biopsies revealed rimmed vacuoles and p62-positive intranuclear inclusions in the myofibers in both patients. The skin biopsy performed in one patient detected typical eosinophilic intranuclear inclusions. Genetic analysis identified CGG repeat expansion in NOTCH2NLC as the causative mutation in the two patients.
Conclusions
Our two patients with OPDM3 had clinical characteristics of NIID and exhibited DWI abnormality in the cerebellum. Our results indicate that OPDM3 is within the spectrum of NIID and that DWI hyperintensities in the cerebellum are helpful for diagnosing NIID or OPDM3.
8.CGG Repeat Expansion in NOTCH2NLC Causing Overlapping Oculopharyngodistal Myopathy and Neuronal Intranuclear Inclusion Disease With Diffusion Weighted Imaging Abnormality in the Cerebellum
Jing MA ; Huiqiu ZHANG ; Bing MENG ; Jiangbo QIN ; Hongye LIU ; Xiaomin PANG ; Rongjuan ZHAO ; Juan WANG ; Xueli CHANG ; Junhong GUO ; Wei ZHANG
Journal of Clinical Neurology 2024;20(6):580-590
Background:
and Purpose CGG repeat expansion in the 5' untranslated region (5'UTR) of the Notch 2 N-terminal-like C gene (NOTCH2NLC) has been associated with neuronal intranuclear inclusion disease (NIID) and oculopharyngodistal myopathy type 3 (OPDM3). Few OPDM3 patients have been reported. This report describes two OPDM3 patients with novel imaging findings who presented the typical features of NIID, and reviews all OPDM3 cases available in the literature.
Methods:
The available clinical, imaging, and pathological information was reviewed and investigated. CGG repeat expansion in the 5'UTR of NOTCH2NLC was tested using the repeatprimed polymerase chain reaction (PCR), followed by the fluorescence amplicon-length PCR to determine the number of CGG repeats.
Results:
Our two OPDM3 patients and most patients reported in the literature developed the typical clinical characteristics of NIID, including leukoencephalopathy, peripheral neuropathy, cognitive deterioration, pigmentary retinopathy, ataxia, tremor, acute encephalitis-like episodes, pigmentary retinopathy, miosis, and sensorineural hearing loss. In addition to typical imaging findings of NIID, our two patients exhibited diffusion weighted imaging (DWI) hyperintensities in the middle cerebellar peduncles, which have not been described previously. Muscle biopsies revealed rimmed vacuoles and p62-positive intranuclear inclusions in the myofibers in both patients. The skin biopsy performed in one patient detected typical eosinophilic intranuclear inclusions. Genetic analysis identified CGG repeat expansion in NOTCH2NLC as the causative mutation in the two patients.
Conclusions
Our two patients with OPDM3 had clinical characteristics of NIID and exhibited DWI abnormality in the cerebellum. Our results indicate that OPDM3 is within the spectrum of NIID and that DWI hyperintensities in the cerebellum are helpful for diagnosing NIID or OPDM3.
9.CGG Repeat Expansion in NOTCH2NLC Causing Overlapping Oculopharyngodistal Myopathy and Neuronal Intranuclear Inclusion Disease With Diffusion Weighted Imaging Abnormality in the Cerebellum
Jing MA ; Huiqiu ZHANG ; Bing MENG ; Jiangbo QIN ; Hongye LIU ; Xiaomin PANG ; Rongjuan ZHAO ; Juan WANG ; Xueli CHANG ; Junhong GUO ; Wei ZHANG
Journal of Clinical Neurology 2024;20(6):580-590
Background:
and Purpose CGG repeat expansion in the 5' untranslated region (5'UTR) of the Notch 2 N-terminal-like C gene (NOTCH2NLC) has been associated with neuronal intranuclear inclusion disease (NIID) and oculopharyngodistal myopathy type 3 (OPDM3). Few OPDM3 patients have been reported. This report describes two OPDM3 patients with novel imaging findings who presented the typical features of NIID, and reviews all OPDM3 cases available in the literature.
Methods:
The available clinical, imaging, and pathological information was reviewed and investigated. CGG repeat expansion in the 5'UTR of NOTCH2NLC was tested using the repeatprimed polymerase chain reaction (PCR), followed by the fluorescence amplicon-length PCR to determine the number of CGG repeats.
Results:
Our two OPDM3 patients and most patients reported in the literature developed the typical clinical characteristics of NIID, including leukoencephalopathy, peripheral neuropathy, cognitive deterioration, pigmentary retinopathy, ataxia, tremor, acute encephalitis-like episodes, pigmentary retinopathy, miosis, and sensorineural hearing loss. In addition to typical imaging findings of NIID, our two patients exhibited diffusion weighted imaging (DWI) hyperintensities in the middle cerebellar peduncles, which have not been described previously. Muscle biopsies revealed rimmed vacuoles and p62-positive intranuclear inclusions in the myofibers in both patients. The skin biopsy performed in one patient detected typical eosinophilic intranuclear inclusions. Genetic analysis identified CGG repeat expansion in NOTCH2NLC as the causative mutation in the two patients.
Conclusions
Our two patients with OPDM3 had clinical characteristics of NIID and exhibited DWI abnormality in the cerebellum. Our results indicate that OPDM3 is within the spectrum of NIID and that DWI hyperintensities in the cerebellum are helpful for diagnosing NIID or OPDM3.
10.Processing Methods and Quality Evaluation of Pinelliae Rhizoma: A Review
Xueli ZHANG ; Changfu YANG ; Wei LI ; Chang LIN
Chinese Journal of Experimental Traditional Medical Formulae 2022;28(18):275-282
In this paper, by consulting the historical herbs and medical classics coupled with related literature in modern research, the historical edition of Chinese Pharmacopoeia and local chronicles of traditional Chinese medicine (TCM) along with the ancient historical evolution of the processing methods of Pinelliae Rhizoma origin as well as the related processing methods of Pinelliae Rhizoma origin from 1959 to 2020 were systematically collated and summarized. It was found that the main processing methods of Pinelliae Rhizoma origin were peeling, decoction washing, lime wrapping and sun-drying. However, stacking, peeling, sun-drying or oven-drying are the primary methods in modern local chronicles of TCM. Meanwhile, washing, peeling, removing fibrous roots and sun-drying are the main methods in Chinese Pharmacopoeia. In addition, there were some changes in the quality evaluation of Pinelliae Rhizoma in different historical periods. Round and white were the best in the quality evaluation of Pinelliae Rhizoma in ancient times, while the evaluation indexes were further refined to size, color, texture, powder property, purity and evenness in modern herbal works. In modern studies, the quality of Pinelliae Rhizoma was mostly evaluated by the chemical components such as alkaloids, total organic acids, polysaccharides, nucleosides, fingerprint and pharmacodynamics. At present, the purification and drying stages of Pinelliae Rhizoma are in the transitional stage between the traditional manual peeling and natural drying methods as well as the modern mechanized and large-scale production. Therefore, a reasonable and feasible modern processing methods and guiding standards of Pinelliae Rhizoma are developed urgently to normalize the processing of Pinelliae Rhizoma and ensure the quality of medicinal materials.