1.Intraocular pressure elevation among pediatric patients given corticosteroids after strabismus surgery.
Jewel Faith F. Anotado ; Alvina Pauline D. Santiago
Acta Medica Philippina 2026;60(8):77-85
BACKGROUND
Corticosteroids have been used in ophthalmology for its potent anti-inflammatory and immunosuppressive actions. Although the role of corticosteroid treatment is pivotal in the treatment of numerous inflammatory diseases and as postoperative management of patients who undergo ocular surgeries, intraocular pressure (IOP) elevation has been a significant ocular side effect that could result after steroid use. Evaluating the changes in IOP in pediatric eyes will provide early detection and timely intervention to prevent glaucomatous optic neuropathy.
OBJECTIVEThis study aimed to determine the incidence of IOP elevation among pediatric patients given corticosteroids after strabismus surgery in a tertiary hospital in Manila, Philippines.
METHODSThis is a single-center, retrospective, observational study that employs review of the clinical records of pediatric patients who underwent strabismus surgery between January 2015 and December 2022. This study was conducted last February to November 2023. Data were gathered and descriptively summarized regarding patient demographics, ophthalmologic diagnosis, type of strabismus surgery performed, preoperative and postoperative IOP readings, frequency and duration of postoperative topical steroid use, and treatment received and response to elevated IOP.
RESULTSForty-five (28.48%) out of the 158 pediatric patients who had strabismus surgery during the study period met the inclusion criteria for the study. The mean age of pediatric patients was 11.38 ± 5.28 years (range 2-18 years old). There were more males (55.6%) than females. All patients were administered Tobramycin + Dexamethasone eyedrops, ointment or both. The baseline, peak, and net change in IOP were 13.5 ± 2.7 mmHg, 23.1 ± 8.8 mmHg and 10 ± 8.4 mmHg respectively. IOP increased in thirty-seven (82.2%) of the patients from baseline, and 21 (56.7%) of them had a considerable rise. For most patients with considerable rise of IOP, topical steroid medication was either stopped or immediately tapered off. Nine patients received topical IOP-lowering medicine, and most of them returned to normal IOP levels two months following surgery. After then, topical IOP-lowering drugs were stopped.
CONCLUSIONIOP elevation following strabismus surgery was frequently associated with topical steroid usage, and most patients experienced considerable IOP elevation. It is highly advised to closely monitor IOP following strabismus surgery, particularly in children receiving topical steroid treatment.
Human ; Male ; Female ; Child Preschool: 2-5 Yrs Old ; Child: 6-12 Yrs Old ; Adolescent: 13-18 Yrs Old ; Strabismus ; Intraocular Pressure ; Ophthalmology ; World Health Organization ; Optic Nerve Diseases ; Volition ; General Surgery
2.A case of pachymeningitis presenting as optic perineuritis and multiple cranial neuropathies.
Benedicto Juan Enrique P. Aguilar ; Mayjane Joan G. Tumulak
Philippine Journal of Ophthalmology 2026;51(1):34-41
OBJECTIVE
To discuss the clinical presentation and management of idiopathic hypertrophic pachymeningitis that presented with multiple cranial neuropathies.
METHODSThis is a case report.
CASE PRESENTATIONA 37-year-old female presented with right-sided headache and ipsilateral cranial nerve (CN) I, II, III, IV, and V deficits which improved with nonsteroidal anti-inflammatory drugs (NSAIDs). Six months later she developed bilateral blurring of vision with pain on eye movement, which progressed to severe bilateral affectation that prompted admission and treatment with high-dose methylprednisolone therapy followed by prolonged oral steroid treatment which was gradually tapered. Recurrence was treated with oral steroids and azathioprine. Diagnostic modalities included an initial cranial contrast computed tomography (CT) scan which was inconclusive; contrast magnetic resonance imaging (MRI) clinched the diagnosis, as well as demonstrated thickening of the optic nerve perineurium. Visual field analysis 30-2 as well as optic nerve head optical coherence tomography (OCT) were used to support the diagnosis and document optic nerve affectation. Biologic testing was used to rule out tuberculosis, syphilis, fungal infection, granulomatosis with polyangiitis, polyarteritis nodosa, and rheumatoid arthritis. The patient had complete vision recovery in the left eye but only partial vision recovery in the right eye.
CONCLUSIONSPachymeningitis should be a diagnostic consideration in patients with headache and multiple cranial neuropathies. Clinicians should always perform independent evaluation of diagnostic modalities with the patient’s clinical presentation in mind. Pachymeningitis can involve the perineurium through contiguous spread of the lesion and present as optic perineuritis as well, with more insidious progression and lasting deficits than isolated optic perineuritis.
Human ; Female ; Adult: 25-44 Yrs Old ; Cranial Nerve Diseases ; Meningitis
3.Overt Hypothyroidism Presenting with Isolated Lower Motor Neuron Facial Nerve Palsy
Murshidah Ainun Mukhtar ; Rabeah Md Zuki ; Wei Chin Mow ; Nurul Farehah Mohd Nazri
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):114-
Introduction:
Cranial nerve palsies have been reported in patients with
uncontrolled hypothyroidism. We describe a case of overt
hypothyroidism due to treatment disruption following
radioiodine therapy, presented with a unilateral lower
motor neuron seventh cranial nerve palsy.
Case:
A 32-year-old female presented with hypertension,
dyslipidemia, class III obesity, and Graves’ disease post
radioiodine therapy. She had stable thyroid function test
with levothyroxine replacement post radioiodine. She
presented with a 3-day history of right-sided facial droop
associated with lethargy, weight gain, and constipation.
She reported inadequate levothyroxine supply due to
2-month lapses in follow-up.
On examination, there was a right-sided lower motor
neuron 7th cranial nerve palsy with delayed ankle reflexes.
No additional neurological deficits, goiter, cutaneous
rashes, or vesicular lesions were noted. There was no
preceding viral illness or otologic symptoms.
Thyroid function tests showed overt hypothyroidism with
thyroid-stimulating hormone 38 mIU/L, free thyroxine <5.4
pmol/L with a deranged lipid profile (total cholesterol: 8.8
mmol/L, low-density lipoprotein: 5.72 mmol/L, triglyceride:
1.77 mmol/L). Renal and liver function tests were within
normal limits, with no leukocytosis. Neuroimaging of the
brain was unremarkable.
She was commenced on a short course of high-dose prednisolone, with no improvement in symptoms. Levothyroxine
replacement therapy initiated led to progressive restoration
of thyroid function, accompanied by symptom recovery.
Conclusion
Isolated lower motor 7th nerve palsy has been reported as
a manifestation of hypothyroidism. This case underscores
the importance of early recognition to enable timely and
appropriate management, as patients with hypothyroidisminduced isolated seventh nerve palsy demonstrate marked
recovery with adequate levothyroxine replacement.
Facial Nerve
;
Hypothyroidism
;
Motor Neurons
;
Paralysis
4.Acupuncture activates vagus nerve-macrophage axis and improves cardiac electrophysiology and inflammatory response in rats with atrial fibrillation via α7nAChR-JAK2/STAT3 pathway.
Zhi-Han LI ; Wen-Min YANG ; Qi HUANG ; Guang-Xia SHI ; Cun-Zhi LIU ; Yu-Qin ZHANG
Journal of Integrative Medicine 2025;23(4):398-414
OBJECTIVE:
The occurrence and development of atrial fibrillation (AF) are influenced by the autonomic nervous system and inflammation. Acupuncture is an effective treatment for AF. This study explored the protective effects of acupuncture in a rat model of paroxysmal AF and investigated its mechanisms.
METHODS:
Male Sprague-Dawley rats (n = 130) were randomly divided into blank control (Con), sham operation (Sham), AF, and acupuncture treatment (Acu) groups. A paroxysmal AF model was established by rapid atrial pacing through the jugular vein. Rats in the Acu group were immobilized to receive acupuncture treatment at Neiguan acupoint (PC6) for 20 min daily for seven days. The other groups were immobilized for the same duration over the treatment period but did not receive acupuncture. The AF induction rate, AF duration, cardiac electrophysiological parameters, and heart rate variability were evaluated by monitoring surface electrocardiogram and vagus nerve discharge signals. After the intervention, the rats were euthanized, and atrial morphology was assessed using haematoxylin and eosin staining. The expression of macrophage F4/80 antigen (F4/80) and cluster of differentiation (CD) 86 in atrial myocardial tissue was detected using immunohistochemistry, immunofluorescence and flow cytometry. The expression levels or contents of interleukin (IL)-1β, IL-6, tumor necrosis factor-α (TNF-α), α7 nicotinic acetylcholine receptor (α7nAChR), phosphorylated Janus kinase 2 (p-JAK2), and phosphorylated signal transducer and activator of transcription 3 (p-STAT3) in atrial myocardial tissue were detected using Western blotting, reverse transcription-quantitative polymerase chain reaction, or enzyme-linked immunosorbent assay. The role of α7nAChR in acupuncture treatment was verified by intraperitoneal injection of the α7nAChR antagonist methyllycaconitine (MLA).
RESULTS:
Compared with the AF group, acupuncture significantly reduced AF duration and induction rate, improved cardiac electrophysiology by enhancing vagus nerve activity and regulating autonomic balance. It also decreased the pro-inflammatory M1 macrophage proportion, alleviating myocardial injury and infiltration. MLA weakened acupuncture's electrophysiological improvement and anti-inflammatory effect. Results suggest that acupuncture triggers the α7nAChR-JAK2/STAT3 pathway and exerts cardioprotection via neuroimmune regulation.
CONCLUSION
Acupuncture significantly reduced the AF induction rate, shortened AF duration, improved cardiac electrophysiological parameters, enhanced vagus nerve activity, and decreased the expression of pro-inflammatory M1 macrophages and inflammatory factors in rats with paroxysmal AF. Its positive effects are related to the activation of the α7nAChR-mediated JAK2/STAT3 signalling pathway, indicating that the interaction between cardiac vagus nerve and macrophages may be a potential target for acupuncture in the prevention and treatment of AF. Please cite this article as: Li ZH, Yang WM, Huang Q, Shi GX, Liu CZ, Zhang YQ. Acupuncture activates vagus nerve-macrophage axis and improves cardiac electrophysiology and inflammatory response in rats with atrial fibrillation via α7nAChR-JAK2/STAT3 pathway. J Integr Med. 2025; 23(4): 398-414.
Animals
;
Male
;
Rats, Sprague-Dawley
;
STAT3 Transcription Factor/metabolism*
;
alpha7 Nicotinic Acetylcholine Receptor/metabolism*
;
Janus Kinase 2/metabolism*
;
Atrial Fibrillation/metabolism*
;
Vagus Nerve/physiopathology*
;
Rats
;
Acupuncture Therapy
;
Signal Transduction
;
Macrophages/metabolism*
;
Inflammation/therapy*
5.Electroacupuncture at ST36 improves gastrointestinal motility disorders by promoting enteric nervous system regeneration through GDNF/Ret signaling in diabetic mice.
Jin-Lu GUO ; Shi LIU ; Sheng-Jie DING ; Xin YANG ; Fan DU
Journal of Integrative Medicine 2025;23(5):548-559
OBJECTIVE:
Diabetes-induced gastrointestinal (GI) motility disorders are increasingly prevalent. Damage to the enteric nervous system (ENS), composed primarily of enteric neurons and glial cells, is an essential mechanism involved in these disorders. Although electroacupuncture (EA) has shown the potential to mitigate enteric neuronal loss, its mechanism is not fully understood. Additionally, the effects of EA on enteric glial cells have not been investigated. Enteric neural precursor cells (ENPCs) contribute to the structural and functional integrity of the ENS, yet whether EA enhances their differentiation into enteric neurons and glial cells remains unexplored. This study investigates whether EA promotes ENS repair through enhancing ENPC-derived neurogenesis and gliogenesis and elucidates the potential molecular mechanisms involved.
METHODS:
Transgenic mice were used to trace Nestin+/nerve growth factor receptor (Ngfr)+ ENPCs labeled with green fluorescent protein (GFP) in vivo. Mice were randomly divided into four groups: control, diabetes mellitus (DM), DM + sham EA, and DM + EA. The effects of EA on diabetic mice were evaluated by GI motility, ENS structure, and ENPC differentiation. Glial cell line-derived neurotrophic factor (GDNF)/Ret signaling was detected to clarify the underlying molecular mechanisms.
RESULTS:
EA alleviated diabetes-induced GI motility disorders, as indicated by reduced whole gut transit time, shortened colonic bead expulsion time, and enhanced smooth muscle contractility. Furthermore, EA attenuated diabetes-induced losses of enteric neurons and glial cells, thereby restoring ENS integrity. Notably, EA reversed the diabetes-induced decrease in ENPCs and significantly increased the absolute number and the proportion of ENPC-derived enteric neurons. However, immunofluorescence analyses revealed no colocalization between EA-induced glial fibrillary acidic protein+ glial cells and GFP-labeled ENPCs. Mechanistically, GDNF/Ret signaling was elevated in intestinal tissues and upregulated in ENPCs in EA-treated diabetic mice.
CONCLUSION
EA facilitates ENS repair by promoting Nestin+/Ngfr+ ENPC differentiation into enteric neurons via upregulation of GDNF/Ret signaling, and driving enteric gliogenesis from non-Nestin+/Ngfr+ ENPCs. These findings highlight EA's role in ameliorating diabetes-induced GI dysmotility through ENPC-derived ENS restoration. Please cite this article as: Guo JL, Liu S, Ding SJ, Yang X, Du F. Electroacupuncture at ST36 improves gastrointestinal motility disorders by promoting enteric nervous system regeneration through GDNF/Ret signaling in diabetic mice. J Integr Med. 2025; 23(5):548-559.
Animals
;
Electroacupuncture
;
Enteric Nervous System/physiology*
;
Gastrointestinal Motility/physiology*
;
Glial Cell Line-Derived Neurotrophic Factor/metabolism*
;
Diabetes Mellitus, Experimental/therapy*
;
Signal Transduction
;
Mice
;
Gastrointestinal Diseases/physiopathology*
;
Proto-Oncogene Proteins c-ret/metabolism*
;
Mice, Transgenic
;
Male
;
Nerve Regeneration
;
Neural Stem Cells
;
Mice, Inbred C57BL
;
Acupuncture Points
6.NUMB endocytic adaptor protein (NUMB) mediates the anti-hepatic fibrosis effect of artesunate (ART) by inducing senescence in hepatic stellate cells (HSCs).
Yangling QIU ; Yujia LI ; Mengran LI ; Yingqian WANG ; Min SHEN ; Jiangjuan SHAO ; Feng ZHANG ; Xuefen XU ; Feixia WANG ; Zili ZHANG ; Shizhong ZHENG
Chinese Journal of Natural Medicines (English Ed.) 2025;23(3):322-333
Developing and identifying effective medications and targets for treating hepatic fibrosis is an urgent priority. Our previous research demonstrated the efficacy of artesunate (ART) in alleviating liver fibrosis by eliminating activated hepatic stellate cells (HSCs). However, the underlying mechanism remains unclear despite these findings. Notably, endocytic adaptor protein (NUMB) has significant implications for treating hepatic diseases, but current research primarily focuses on liver regeneration and hepatocellular carcinoma. The precise function of NUMB in liver fibrosis, particularly its ability to regulate HSCs, requires further investigation. This study aims to elucidate the role of NUMB in the anti-hepatic fibrosis action of ART in HSCs. We observed that the expression level of NUMB significantly decreased in activated HSCs compared to quiescent HSCs, exhibiting a negative correlation with the progression of liver fibrosis. Additionally, ART induced senescence in activated HSCs through the NUMB/P53 tumor suppressor (P53) axis. We identified NUMB as a crucial regulator of senescence in activated HSCs and as a mediator of ART in determining cell fate. This research examines the specific target of ART in eliminating activated HSCs, providing both theoretical and experimental evidence for the treatment of liver fibrosis.
Hepatic Stellate Cells/cytology*
;
Liver Cirrhosis/genetics*
;
Artesunate/pharmacology*
;
Cellular Senescence/drug effects*
;
Membrane Proteins/genetics*
;
Animals
;
Humans
;
Nerve Tissue Proteins/genetics*
;
Tumor Suppressor Protein p53/genetics*
;
Male
;
Mice
7.Synaptic Vesicle Glycoprotein 2A Slows down Amyloidogenic Processing of Amyloid Precursor Protein via Regulating Its Intracellular Trafficking.
Qian ZHANG ; Xiao Ling WANG ; Yu Li HOU ; Jing Jing ZHANG ; Cong Cong LIU ; Xiao Min ZHANG ; Ya Qi WANG ; Yu Jian FAN ; Jun Ting LIU ; Jing LIU ; Qiao SONG ; Pei Chang WANG
Biomedical and Environmental Sciences 2025;38(5):607-624
OBJECTIVE:
To reveal the effects and potential mechanisms by which synaptic vesicle glycoprotein 2A (SV2A) influences the distribution of amyloid precursor protein (APP) in the trans-Golgi network (TGN), endolysosomal system, and cell membranes and to reveal the effects of SV2A on APP amyloid degradation.
METHODS:
Colocalization analysis of APP with specific tagged proteins in the TGN, ensolysosomal system, and cell membrane was performed to explore the effects of SV2A on the intracellular transport of APP. APP, β-site amyloid precursor protein cleaving enzyme 1 (BACE1) expressions, and APP cleavage products levels were investigated to observe the effects of SV2A on APP amyloidogenic processing.
RESULTS:
APP localization was reduced in the TGN, early endosomes, late endosomes, and lysosomes, whereas it was increased in the recycling endosomes and cell membrane of SV2A-overexpressed neurons. Moreover, Arl5b (ADP-ribosylation factor 5b), a protein responsible for transporting APP from the TGN to early endosomes, was upregulated by SV2A. SV2A overexpression also decreased APP transport from the cell membrane to early endosomes by downregulating APP endocytosis. In addition, products of APP amyloid degradation, including sAPPβ, Aβ 1-42, and Aβ 1-40, were decreased in SV2A-overexpressed cells.
CONCLUSION
These results demonstrated that SV2A promotes APP transport from the TGN to early endosomes by upregulating Arl5b and promoting APP transport from early endosomes to recycling endosomes-cell membrane pathway, which slows APP amyloid degradation.
Amyloid beta-Protein Precursor/genetics*
;
Membrane Glycoproteins/genetics*
;
Animals
;
Protein Transport
;
Nerve Tissue Proteins/genetics*
;
Humans
;
Mice
;
Endosomes/metabolism*
;
trans-Golgi Network/metabolism*
8.A retrospective study of the effects of different surgical procedures on the mandibular nerve canal involved by odontogenic keratocyst.
Zeyu WANG ; Chongli DU ; Dong WANG ; Xiao PENG ; Yue DU ; Hanying WANG ; Tingyi GAO ; Rui HAN ; Kai ZHANG
West China Journal of Stomatology 2025;43(1):106-113
OBJECTIVES:
This study aims to evaluate the changes in the mandibular canal following the treatment of large odontogenic keratocysts through decompression and curettage, providing a theoretical basis for sequential treatment.
METHODS:
Twenty patients were selected for each decompression and curettage treatment of large odontogenic keratocysts in the mandible. Postoperative follow-up with was conducted every three months, during which cone beam computed tomography (CBCT) scans were performed. Then, the data were imported into MIMICS software to observe 3D changes in the position and structure of the mandibular nerve canal, followed by a comparative analysis.
RESULTS:
The total displacement of the mandibular canal was (1.89±0.21) mm on the decompression side and (0.80±0.19) mm on the curettage side. Vertically, the displacement range of the mandibular canal on the decompression side (M=1.03, SD=0.17) was larger than on the curettage side (M=0.52, SD=0.010) within nine months post-operation. In the buccal-lingual direction, the ratio of the thickness of the buccal plate to the lingual plate gradually increased with time. The amount of bone reconstruction at the part of the mandibular nerve canal closest to the cyst was (1.75±0.15) mm on the decompression side and (1.45±0.09) mm on the curettage side after nine months.
CONCLUSIONS
The mandibular nerve canal showed varying degrees of recovery and "relocation" after two surgical procedures. Osteogenesis around the mandibular nerve canal was more remarkable after decompression than after curettage. Therefore, for large odontogenic keratocyst, decompression is recommended as the initial treatment, followed by secondary curettage nine months later.
Humans
;
Odontogenic Cysts/diagnostic imaging*
;
Retrospective Studies
;
Cone-Beam Computed Tomography
;
Decompression, Surgical/methods*
;
Mandibular Nerve/surgery*
;
Mandible/innervation*
;
Curettage
;
Male
;
Female
;
Adult
;
Middle Aged
9.A case of primary microcephaly associated with compound heterozygous variants of WDR62 gene.
Lihua YU ; Xingwang WANG ; Ling LIU ; Yukun ZENG ; Yiming QI ; Yanlin HUANG ; Hongke DING
Chinese Journal of Medical Genetics 2025;42(2):175-179
OBJECTIVE:
To explore the genetic basis for a girl with primary microcephaly and growth retardation.
METHODS:
A girl who was admitted to Guangdong Maternal and Child Health Care Hospital in was selected as the study subject. Peripheral blood samples were collected from the child and her parents. Trio whole exome sequencing was carried out, and candidate variants were verified by Sanger sequencing and bioinformatic analysis. This study was approved by the Medical Ethnics Committee of Guangdong Maternal and Child Health Care Hospital (Ethics No. 202201278).
RESULTS:
DNA sequencing revealed that the child has harbored compound heterozygous variants of the WDR62 gene, including a frameshifting c.2963delC (p.Pro988Argfs*80) variant in exon 24 which was inherited from the unaffected father, and a nonsense c.3163G>T (p.Glu1055*) variant in exon 26, which was inherited from her unaffected mother. Both variants were predicted to affect the reading frame of the WDR62 gene.
CONCLUSION
Based on the clinical manifestations, results of genetic testing and pedigree analysis, the compound heterozygous variants were predicted to underlay the pathogenesis of microcephaly and growth retardation in this child. Above discovery has expanded the mutational spectrum for WDR62-associated Primary microcephaly type 2, and facilitated genetic counseling for the family.
Female
;
Humans
;
Cell Cycle Proteins
;
Heterozygote
;
Microcephaly/genetics*
;
Mutation
;
Nerve Tissue Proteins/genetics*
;
Pedigree
10.Clinical phenotypic and genetic analysis of three children with Paroxysmal kinesigenic dyskinesia and Self-limited familial infantile epilepsy caused by PRRT2 gene mutation.
Dandan SONG ; Xiaoyi PENG ; Yao WANG ; Aojie CAI ; Sapana TAMANG ; Huaili WANG ; Zhihong ZHUO
Chinese Journal of Medical Genetics 2025;42(3):292-299
OBJECTIVE:
To investigate the clinical phenotypic and genetic characteristics of three children with Paroxysmal kinesigenic dyskinesia (PKD) and Self-limited familial infantile epilepsy (SeLIE) caused by PRRT2 gene mutation.
METHODS:
Three children with PKD and SeLIE caused by PRRT2 gene mutation (children 1-3) who were treated in the First Affiliated Hospital of Zhengzhou University from November 2022 to August 2023 were selected as the research subjects. A retrospective study was conducted to collect the clinical and family history data of the three children. 2 mL of peripheral venous blood from children 1-3 and parents of children 1-2 were collected (parents of children refused to undergo genetic testing and no blood samples were collected), genomic DNA was extracted, whole exome sequencing (WES) was performed, and Sanger sequencing method was used for verification. According to the Classification Standards and Guidelines for Genetic Variants formulated by the American Society of Medical Genetics and Genomics (ACMG) (hereinafter referred to as the "ACMG Guidelines"), the pathogenicity of the variant loci detected in three children was rated, and the detrimental loci of the variant loci were analyzed by multiple bioinformatics software. This study has been approved by the Ethics Committee of the First Affiliated Hospital of Zhengzhou University (Ethics No. 2024-KY-0881-002).
RESULTS:
The clinical data and genetic test results of the three children in this study are as follows. Child 1: female, age of onset of 4 months and 10 days, with seizures, manifested as sudden cessation of movements, staring in both eyes, cyanosis of the lips, paleness, and stiffness and shaking of limbs. The results of genetic testing showed that child 1 had maternal PRRT2 gene c.583_584dup (p.P196Afs*34) frameshift variant, which was rated as a pathogenic variant (PVS1 PM2_Supporting PP4) according to ACMG guidelines. According to the clinical manifestations and genetic test results of child 1, he was diagnosed with SeLIE and took oral sodium valproate [0.5 mL/(kg.d)], and was still taking medication at the follow-up of 2 years old, and did not have seizures again after 5 months of age. Child 2: male, age of onset of 10 years old, manifested as dystonia after sudden movement. The results of genetic testing showed that child 2 had PRRT2 gene mutations: paternal c.649dupC (p.R217Pfs*8) frameshift variant and maternal c.445C>A (p.Q149K) mutation. Among them, c.649dupC was a reported pathogenic variant, and according to ACMG guidelines, c.445C>A variant was rated as a variant of unknown clinical significance (PM2_Supporting), with a high probability of benignness. According to the clinical manifestations and genetic test results of the child 2, he was diagnosed with PKD, and was followed up with oral oxcarbazepine 9 mg/(kg.d) until 12 years and 2 months, and was still on the drug, and there was no recurrence of the seizure of the form of dyskinesia after taking the drug. Child 3: male, age of onset of 11 years old, manifested by dystonia after sudden exercise. The results of genetic testing showed that child 3 had a missense variant of PRRT2 gene c.904G>C (p.D302H), and his parents refused genetic testing, and the source of the mutation was unknown, and the variant was rated as a variant of unknown clinical significance (PM2_Supporting+PP3_Moderate+PP4) according to ACMG guidelines. According to the clinical manifestations and genetic test results of child 3, he was diagnosed with PKD, and was treated with oral oxcarbazepine 10 mg/(kg.d) for 1 year and then discontinued on his own, and was followed up at the age of 17, and there was no recurrence of the seizure of the form of movement disorder after taking the drug.
CONCLUSION
One case of SeLIE and two cases of PKD caused by PRRT2 gene mutations responded well to anti-seizure drugs. In this study, four variant loci of PRRT2 gene were found: c.583_584dup, c.904G>C, c.649dupC, c.445C>A, among which c.583_584dup were new variants, enriching the variant spectrum of PRRT2 gene.
Humans
;
Male
;
Nerve Tissue Proteins/genetics*
;
Female
;
Membrane Proteins/genetics*
;
Mutation
;
Child, Preschool
;
Infant
;
Phenotype
;
Dystonia/genetics*
;
Retrospective Studies
;
Child


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